Surface treatment agent

Abstract

To provide an article having a surface treatment layer with higher friction durability.SOLUTION: (A) a fluoropolyether group-containing silane compound, and (B) a compound represented by formula (B1) or (B2): wherein RFB1 is Rf1 - R F - Oq -, RFB2 is - Rf2p - R F - Oq -, each R F is independently a divalent fluoropolyether group, and Rf1 is a C1 - 16 alkyl group optionally substituted with one or more fluoro atoms, Rf2 is a C1-6 alkylene group which may be substituted by one or more fluorine atoms, p is 0 or 1, q is each independently 0 or 1, XB is each independently a single bond or a divalent group, and RB is each independently an oxyalkylene-containing group. The fluoropolyether group-containing polyoxyalkylene compound is represented by the following formula (1): SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present disclosure relates to a surface treatment agent. [Background technology]

[0002] It is known that certain fluoropolyether group-containing silane compounds, when used for surface treatment of substrates, can provide excellent water repellency, oil repellency, antifouling properties, etc. Layers obtained from surface treatment agents containing fluoropolyether group-containing silane compounds (hereinafter also referred to as "surface treatment layers") are applied as so-called functional thin films to a wide variety of substrates, such as glass, plastics, textiles, sanitary products, and building materials (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-218639 Summary of the Invention [Problem to be solved by the invention]

[0004] The fluoropolyether group-containing silane compound described in Patent Document 1 can provide a surface treatment layer with excellent functionality, but there is a demand for a surface treatment layer with higher friction durability.

[0005] An object of the present disclosure is to provide an article having a surface treatment layer with higher friction durability. [Means for solving the problem]

[0006] The present disclosure includes the following aspects. [1] Component (B): Formula (B1) or (B2): [ka] [In formula: R FB1 is Rf1 -R F -O q - and R FB2 is -Rf 2 p -R F -O q - and R F are each independently a divalent fluoropolyether group, Rf 1 C optionally substituted with one or more fluorine atoms 1-16 is an alkyl group, Rf 2 C optionally substituted with one or more fluorine atoms 1-6 is an alkylene group, p is 0 or 1; Each q is independently 0 or 1; X B are each independently a single bond or a divalent group, R B are each independently an oxyalkylene-containing group. Fluoropolyether group-containing polyoxyalkylene compound represented by the formula: [2] The oxyalkylene-containing groups each independently represent the following formula: -R 61 -(OR 63 ) b3 -R 62 , or -X E (-R 61 -(OR 63 ) b3 -R 62 ) r2 [In formula: R 61 are each independently a single bond or C 1-6 is an alkylene group, R 62 are each independently a hydrogen atom, C 1-6 Alkyl group or C 1-6 is an alkoxy group, R 63are each independently 1-6 is an alkylene group, b3 each independently represents an integer of 1 to 6, X E is a trivalent to decavalent group, r2 is an integer from 2 to 9, and X E is one less than the valence of .] The fluoropolyether group-containing polyoxyalkylene compound according to the above item [1], wherein the fluoropolyether group is a group represented by the formula: [3] The oxyalkylene-containing groups each independently represent the following formula: -R 61 -(OR 63 ) b3 -R 62 [In formula: R 61 is a single bond or C 1-6 is an alkylene group, R 62 is a hydrogen atom, C 1-6 Alkyl group or C 1-6 is an alkoxy group, R 63 are each independently 1-6 is an alkylene group, b3 is an integer from 1 to 6. The fluoropolyether group-containing polyoxyalkylene compound according to the above [1] or [2], wherein the fluoropolyether group is a group represented by the formula: [4] R 63 is C 1-3 The fluoropolyether group-containing polyoxyalkylene compound according to the above [2] or [3], wherein the alkylene group is an alkylene group. [5] X B are each independently a single bond or -(R 67 ) b1 -(R 68 ) b2 - [In formula: R 67 are each independently 1-6 is an alkylene group, R 68are each independently an oxygen atom, a sulfur atom, CO, or NR 69 ,CONR 69 , N.R. 69 CO or C 6-12 is an arylene group, R 69 are each independently a hydrogen atom or C 1-6 is an alkyl group, b1 is an integer from 0 to 6, b2 is an integer from 0 to 6, the sum of b1 and b2 is 1 or greater, The repeating units enclosed in parentheses with b1 or b2 may be present in any order in the formula.] The fluoropolyether group-containing polyoxyalkylene compound according to any one of the above [1] to [4], wherein [6] X B are each independently a single bond, C 1-6 an alkylene group or -R 64 -OR 65 - and R 64 is a single bond or C 1-6 is an alkylene group, R 65 is a single bond or C 1-6 is an alkylene group, The fluoropolyether group-containing polyoxyalkylene compound according to any one of the above [1] to [5]. [7] R F are each independently of the formula: -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3R Fa 6) d -(OC2F4) e -(OCF2) f - [In formula: R Fa are each independently a hydrogen atom, a fluorine atom, or a chlorine atom, a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula, provided that all R Fa is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or greater.] The fluoropolyether group-containing polyoxyalkylene compound according to any one of the above [1] to [6], wherein the fluoropolyether group is a group represented by the following formula: [8] Rf 1 is C 1-16 is a perfluoroalkyl group, Rf 2 is C 1-6 is a perfluoroalkylene group, R F are each independently of the formula: -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - [In formula: a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula, provided that all R Fa is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or greater.] The fluoropolyether group-containing polyoxyalkylene compound according to any one of the above [1] to [7], wherein the fluoropolyether group is a group represented by the following formula: [9] R F are each independently represented by the following formula (f1), (f2), (f3), (f4), (f5), or (f6): -(OC3F6) d -(OC2F4) e- (f1) [wherein d is an integer of 1 to 200, and e is 0 or 1.] -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f2) [In the formula, c and d each independently represent an integer of 0 to 30, e and f each independently represent an integer of 1 to 200; the sum of c, d, e, and f is an integer of 10 to 200, The order of occurrence of each repeating unit enclosed in parentheses with c, d, e, or f is arbitrary in the formula. -(R 6 -R 7 ) g - (f3) [In the formula, R 6 is OCF2 or OC2F4, R 7 are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups selected from these groups, g is an integer from 2 to 100. -(R 6 -R 7 ) g -R r -(R 7’ -R 6’ ) g’ - (f4) [In the formula, R 6 is OCF2 or OC2F4, R 7 are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups independently selected from these groups, R 6’ is OCF2 or OC2F4, R 7’are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups independently selected from these groups, g is an integer from 2 to 100, g' is an integer from 2 to 100, R r teeth, [ka] (In the formula, * indicates the bonding position.) ]; -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] The fluoropolyether group-containing polyoxyalkylene compound according to any one of the above [1] to [8], wherein the fluoropolyether group is a group represented by the following formula:

[10] Component (A): a fluoropolyether group-containing silane compound, and Component (B): A fluoropolyether group-containing polyoxyalkylene compound according to any one of the above items [1] to [9]. A surface treatment agent comprising:

[11] The fluoropolyether group-containing silane compound is represented by the following formula (A1) or (A2): [ka] [In formula: R FA1 are each independently Rf 1 -R F -O q - and R FA2 is -Rf 2 p -R F -O q - and R F are each independently a divalent fluoropolyether group, Rf 1 C optionally substituted with one or more fluorine atoms 1-16 is an alkyl group, Rf 2 C optionally substituted with one or more fluorine atoms 1-6 is an alkylene group, p is 0 or 1; Each q is independently 0 or 1; R Si are each independently a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom bonded to a monovalent group, At least one R Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded, X A are each independently a single bond or a divalent to decavalent group, α1 is an integer from 1 to 9, β1 is an integer from 1 to 9, Each γ1 is independently an integer of 1 to 9. The surface treatment agent according to

[10] above, which is a compound represented by the formula:

[12] In formulas (A1) and (A2), R F are each independently of the formula: -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3R Fa 6) d -(OC2F4) e -(OCF2) f - [In formula: R Fa are each independently a hydrogen atom, a fluorine atom, or a chlorine atom, a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula, provided that all R Fa is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or greater.] The surface treatment agent according to

[11] above, wherein the group is represented by the formula:

[13] In formulas (A1) and (A2), Rf 1 is C 1-16 is a perfluoroalkyl group, Rf 2 is C 1-6 is a perfluoroalkylene group, R F are each independently of the formula: -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - [In formula: a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula, provided that all R Fa is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or greater.] The surface treatment agent according to any one of the above

[11] and

[12] , wherein the group is represented by the following formula:

[14] In formulas (A1) and (A2), R F are each independently represented by the following formula (f1), (f2), (f3), (f4), (f5), or (f6): -(OC3F6) d -(OC2F4) e - (f1) [wherein d is an integer of 1 to 200, and e is 0 or 1.] -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f2) [In the formula, c and d each independently represent an integer of 0 to 30, e and f each independently represent an integer of 1 to 200; the sum of c, d, e, and f is an integer of 10 to 200, The order of occurrence of each repeating unit enclosed in parentheses with c, d, e, or f is arbitrary in the formula. -(R 6 -R 7 ) g - (f3) [In the formula, R 6 is OCF2 or OC2F4, R 7 are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups selected from these groups, g is an integer from 2 to 100. -(R 6 -R 7 ) g -R r -(R 7’ -R 6’ ) g’ - (f4) [In the formula, R 6 is OCF2 or OC2F4, R 7 are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups independently selected from these groups, R 6’ is OCF2 or OC2F4, R 7’ are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups independently selected from these groups, g is an integer from 2 to 100, g' is an integer from 2 to 100, R r teeth, [ka] (In the formula, * indicates the bonding position.) ]; -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC6F 12 )a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] The surface treatment agent according to any one of the above

[11] to

[13] , wherein the group is represented by the following formula:

[15] R Si is the following formula (S1), (S2), (S3), (S4) or (S5): [ka] [In formula: R 11 are each independently a hydroxyl group or a hydrolyzable group, R 12 are each independently a hydrogen atom or a monovalent organic group, n1 is (SiR 11 n1 R 12 3-n1 ) units are each independently an integer of 0 to 3, X 11 are each independently a single bond or a divalent group, R 13 are each independently a hydrogen atom or a monovalent organic group, each t is independently an integer of 2 or greater; R 14 are each independently a hydrogen atom, a halogen atom or -X 11 -SiR 11 n1 R 12 3-n1 and R 15are each independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms, R a1 are each independently -Z 1 -SiR 21 p1 R 22 q1 R 23 r1 and; Z 1 are each independently a divalent group, R 21 are each independently -Z 1’ -SiR 21’ p1’ R 22’ q1’ R 23’ r1’ and; R 22 are each independently a hydroxyl group or a hydrolyzable group, R 23 are each independently a hydrogen atom or a monovalent organic group, p1 each independently represents an integer of 0 to 3, Each q1 is independently an integer of 0 to 3, Each r1 is independently an integer of 0 to 3, The sum of p1, q1 and r1 is (SiR 21 p1 R 22 q1 R 23 r1 ) units, is 3, Z 1’ are each independently a divalent group, R 21’ are each independently -Z 1” -SiR 22” q1” R 23” r1” and; R 22’ are each independently a hydroxyl group or a hydrolyzable group, R 23’ are each independently a hydrogen atom or a monovalent organic group, p1' is independently an integer of 0 to 3, Each q1' is independently an integer of 0 to 3, each r1' is independently an integer of 0 to 3; The sum of p1', q1' and r1' is (SiR 21’ p1’ R 22’ q1’ R 23’ r1’ ) units, is 3, Z 1” are each independently a divalent group, R 22” are each independently a hydroxyl group or a hydrolyzable group, R 23” are each independently a hydrogen atom or a monovalent organic group, q1″ are each independently an integer of 0 to 3, r1″ are each independently an integer of 0 to 3, The sum of q1" and r1" is (SiR 22” q1” R 23” r1” ) units, is 3, R b1 are each independently a hydroxyl group or a hydrolyzable group, R c1 are each independently a hydrogen atom or a monovalent organic group, k1 each independently represents an integer of 0 to 3, l1 are each independently an integer of 0 to 3, m1 each independently represents an integer of 0 to 3, The sum of k1, l1 and m1 is (SiR a1 k1 R b1 l1 R c1 m1 ) units, is 3, R d1 are each independently -Z 2 -CR 31 p2 R 32 q2 R33 r2 and; Z 2 are each independently a single bond or a divalent group; R 31 are each independently -Z 2’ -CR 32’ q2’ R 33’ r2’ and; R 32 are each independently -Z 3 -SiR 34 n2 R 35 3-n2 and R 33 are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group, p2 each independently represents an integer of 0 to 3, Each q2 is independently an integer of 0 to 3, Each r2 is independently an integer of 0 to 3, The sum of p2, q2 and r2 is (CR 31 p2 R 32 q2 R 33 r2 ) units, is 3, Z 2’ are each independently a single bond or a divalent group; R 32’ are each independently -Z 3 -SiR 34 n2 R 35 3-n2 and R 33’ are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group, each q2' independently represents an integer of 0 to 3; r2' are each independently an integer of 0 to 3, The sum of q2' and r2' is (CR 32’ q2’ R 33’ r2’ ) units, is 3, Z3 are each independently a single bond or a divalent group; R 34 are each independently a hydroxyl group or a hydrolyzable group, R 35 are each independently a hydrogen atom or a monovalent organic group, n2 each independently represents an integer of 0 to 3, R e1 are each independently -Z 3 -SiR 34 n2 R 35 3-n2 and R f1 are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group, k2 each independently represents an integer of 0 to 3, l2 are each independently an integer of 0 to 3, m2 each independently represents an integer of 0 to 3, The sum of k2, l2 and m2 is (CR d1 k2 R e1 l2 R f1 m2 ) units, is 3, R g1 and R h1 are each independently -Z 4 -SiR 11 n1 R 12 3-n1 , -Z 4 -SiR a1 k1 R b1 l1 R c1 m1 , or -Z 4 -CR d1 k2 R e1 l2 R f1 m2 and Z 4 are each independently a single bond or a divalent group, However, in formulae (S1), (S2), (S3), (S4), and (S5), there is at least one Si atom to which a hydroxyl group or a hydrolyzable group is bonded.] The surface treatment agent according to any one of the above

[11] to

[14] , wherein the group is represented by the following formula:

[16] α1, β1, and γ1 are 1, and X A The surface treatment agent according to any one of the above

[11] to

[15] , wherein is a divalent group.

[17] X A is a single bond or the following formula: -(R 51 ) p5 -(X 51 ) q5 - [In formula: R 51 is a single bond, -(CH2) s5 - or an o-, m- or p-phenylene group, s5 is an integer from 1 to 20, X 51 is -(X 52 ) l5 - and X 52 are each independently -O-, -S-, o-, m- or p-phenylene group, -C(O)O-, -Si(R 53 )2-, -(Si(R 53 )2O) m5 -Si(R 53 )2-, -CONR 54 -, -O-CONR 54 -, -NR 54 - and -(CH2) n5 - is a group selected from the group consisting of R 53 are each independently a phenyl group, C 1-6 Alkyl group or C 1-6 is an alkoxy group, R 54 are each independently a hydrogen atom, a phenyl group, or C 1-6 is an alkyl group, m5 each independently represents an integer of 1 to 100, n5 is independently an integer of 1 to 20, l5 is an integer from 1 to 10, p5 is 0 or 1; q5 is 0 or 1, wherein at least one of p5 and q5 is 1, and the repeating units enclosed in parentheses with p5 or q5 may be present in any order; The right side is R Si Binds to.] The surface treatment agent according to any one of the above

[11] to

[16] , wherein R is a divalent group represented by the following formula:

[18] X A is expressed by the following formula: [ka] [In the formula, X a is a single bond or a divalent group. The surface treatment agent according to any one of the above

[11] to

[15] , wherein the group is represented by the following formula:

[19] The surface treatment agent according to any one of the above

[10] to

[18] , wherein the content of the component (B) is 1 to 70 mass % based on the total of the components (A) and (B).

[20] The surface treatment agent according to any one of the above

[10] to

[19] , wherein the content of the component (B) is 1 to 40 mass % based on the total of the components (A) and (B). [twenty one] The surface treatment agent according to any one of the above

[10] to

[20] , further comprising one or more other components selected from fluorine-containing oils, silicone oils, alcohols, and catalysts. [twenty two] The surface treatment agent according to any one of the above

[10] to

[21] , further comprising a solvent. [twenty three] The surface treatment agent according to any one of the above

[10] to

[22] , which is used as an antifouling coating agent or a waterproof coating agent. [twenty four] A pellet containing the surface treatment agent according to any one of the above items

[10] to

[23] . [twenty five] An article comprising a substrate and a layer formed on the substrate from the surface treatment agent according to any one of the above items

[10] to

[23] .

[26] The article according to

[25] above, wherein the substrate is a glass substrate.

[27] The article according to

[25] above, which is an optical element. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a surface treatment agent that can provide a surface treatment layer having higher friction durability. DETAILED DESCRIPTION OF THE INVENTION

[0008] As used herein, the term "monovalent organic group" refers to a monovalent group containing carbon. The monovalent organic group is not particularly limited, but may be a hydrocarbon group or a derivative thereof. A hydrocarbon group derivative refers to a group having one or more N, O, S, Si, amide, sulfonyl, siloxane, carbonyl, carbonyloxy, etc. at the end or in the molecular chain of the hydrocarbon group. Note that when simply referring to an "organic group," it refers to a monovalent organic group. Furthermore, the term "divalent organic group" refers to a divalent group containing carbon. Examples of such divalent organic groups include divalent groups obtained by eliminating one additional hydrogen atom from an organic group. Similarly, a trivalent or higher organic group refers to a group obtained by eliminating a predetermined number of hydrogen atoms from an organic group.

[0009] As used herein, the term "hydrocarbon group" refers to a group containing carbon and hydrogen, which is obtained by removing a hydrogen atom from a hydrocarbon. Such hydrocarbon groups include, but are not limited to, C 1-20Examples of hydrocarbon groups include aliphatic hydrocarbon groups and aromatic hydrocarbon groups. The "aliphatic hydrocarbon group" may be linear, branched, or cyclic, and may be saturated or unsaturated. The hydrocarbon group may contain one or more ring structures. The hydrocarbon group may be substituted with one or more substituents.

[0010] As used herein, the substituent of the "hydrocarbon group" is not particularly limited, but examples thereof include a halogen atom, a C 1-6 Alkyl group, C 2-6 Alkenyl group, C 2-6 Alkynyl group, C 3-10 Cycloalkyl groups, C 3-10 Unsaturated cycloalkyl groups, 5-10 membered heterocyclyl groups, 5-10 membered unsaturated heterocyclyl groups, C 6-10 Examples include one or more groups selected from aryl groups and 5- to 10-membered heteroaryl groups.

[0011] As used herein, the term "hydrolyzable group" refers to a group that can undergo a hydrolysis reaction, i.e., a group that can be removed from the main skeleton of a compound by a hydrolysis reaction. Examples of hydrolyzable groups include -OR h1 , -OCOR h1 , -ON=CR h1 2, -NR h1 2, -NHR h1 , —NCO, halogen (wherein R h1 represents a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms), and preferably -OR h1 (i.e., an alkoxy group). h1 Examples of the alkyl group include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, particularly unsubstituted alkyl groups, are preferred, with methyl and ethyl groups being more preferred.

[0012] (surface treatment agent) The surface treatment agent of the present disclosure is Component (A): a fluoropolyether group-containing silane compound, and Component (B): Formula (B1) or (B2): [ka] [In formula: R FB1 is Rf 1 -R F -O q - and R FB2 is -Rf 2 p -R F -O q - and R F are each independently a divalent fluoropolyether group, Rf 1 C optionally substituted with one or more fluorine atoms 1-16 is an alkyl group, Rf 2 C optionally substituted with one or more fluorine atoms 1-6 is an alkylene group, p is 0 or 1; Each q is independently 0 or 1; X B are each independently a single bond or a divalent group, R B are each independently an oxyalkylene-containing group .] A fluoropolyether group-containing polyoxyalkylene compound represented by the formula: Includes:

[0013] The surface treatment agent of the present disclosure contains the fluoropolyether group-containing polyoxyalkylene compound as component (B), and thus can provide a surface treatment layer with excellent friction durability.

[0014] (Fluoropolyether group-containing silane compound) The fluoropolyether group-containing silane compound is a compound containing a fluoropolyether group and a hydrolyzable silane group.

[0015] In one embodiment, the fluoropolyether group-containing silane compound is represented by the following formula (A1) or (A2): [ka] [In formula: R FA1 is Rf 1 -R F -O q - and R FA2 is -Rf 2 p -R F -O q - and R F are each independently a divalent fluoropolyether group, Rf 1 C optionally substituted with one or more fluorine atoms 1-16 is an alkyl group, Rf 2 C optionally substituted with one or more fluorine atoms 1-6 is an alkylene group, p is 0 or 1; Each q is independently 0 or 1; R Si are each independently a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom bonded to a monovalent group, At least one R Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded, X A are each independently a single bond or a divalent to decavalent group, α1 is an integer from 1 to 9, β1 is an integer from 1 to 9, Each γ1 is independently an integer of 1 to 9. The fluoropolyether group-containing silane compound is represented by the formula:

[0016] In formula (A1), R FA1 is Rf 1 -R F -O q -It is.

[0017] In formula (A2), R FA2 is -Rf 2 p -R F -O q -It is.

[0018] In formulas (A1) and (A2), Rf 1 C optionally substituted with one or more fluorine atoms 1-16 It is an alkyl group.

[0019] C optionally substituted with one or more fluorine atoms 1-16 "C" in alkyl group 1-16 The "alkyl group" may be a straight chain or a branched chain, and is preferably a straight chain or branched chain C 1-6 Alkyl groups, especially C 1-3 alkyl group, more preferably a straight-chain C 1-6 Alkyl groups, especially C 1-3 It is an alkyl group.

[0020] Rf 1 is preferably C substituted by one or more fluorine atoms 1-16 alkyl group, more preferably CF2H-C 1-15 A perfluoroalkylene group, more preferably C 1-16 It is a perfluoroalkyl group.

[0021] Above C 1-16 The perfluoroalkyl group may be a straight or branched chain, and is preferably a straight or branched C 1-6 Perfluoroalkyl groups, especially C 1-3 A perfluoroalkyl group, more preferably a linear C1-6 Perfluoroalkyl groups, especially C 1-3 A perfluoroalkyl group, specifically, -CF3, -CF2CF3, or -CF2CF2CF3.

[0022] In formulas (A1) and (A2), Rf 2 C optionally substituted with one or more fluorine atoms 1-6 It is an alkylene group.

[0023] C optionally substituted with one or more fluorine atoms 1-6 "C" in the alkylene group 1-6 The "alkylene group" may be a straight chain or a branched chain, and is preferably a straight chain or branched chain C 1-3 It is preferably a linear alkylene group. 1-3 It is an alkylene group.

[0024] Rf 2 is preferably C substituted by one or more fluorine atoms 1-6 is an alkylene group, more preferably C 1-6 A perfluoroalkylene group, more preferably C 1-3 It is a perfluoroalkylene group.

[0025] Above C 1-6 The perfluoroalkylene group may be a straight chain or a branched chain, and is preferably a straight chain or branched C 1-3 A perfluoroalkylene group, more preferably a linear C 1-3 A perfluoroalkylene group, specifically, -CF2-, -CF2CF2-, or -CF2CF2CF2-.

[0026] In the above formula, p is 0 or 1. In one embodiment, p is 0. In another embodiment, p is 1.

[0027] In the above formula, each q is independently 0 or 1. In one embodiment, q is 0. In another embodiment, q is 1.

[0028] In formulas (A1) and (A2), R F are each independently a divalent fluoropolyether group.

[0029] R F is preferably of the formula: -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3R Fa 6) d -(OC2F4) e -(OCF2) f - [In formula: R Fa are each independently a hydrogen atom, a fluorine atom, or a chlorine atom, a, b, c, d, e, and f each independently represent an integer of 0 to 200, and the sum of a, b, c, d, e, and f is 1 or more. The order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula. However, all R Fa is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or greater.] It is a group represented by the following formula:

[0030] R Fa is preferably a hydrogen atom or a fluorine atom, more preferably a fluorine atom. Fa is a hydrogen atom or a chlorine atom, at least one of a, b, c, e and f is 1 or greater.

[0031] a, b, c, d, e and f may each independently be an integer of preferably 0 to 100, more preferably an integer of 0 to 50.

[0032] The sum of a, b, c, d, e, and f is preferably 5 or more, more preferably 10 or more, even more preferably 20 or more, and may be, for example, 25 or more or 30 or more. The sum of a, b, c, d, e, and f is preferably 200 or less, more preferably 100 or less, even more preferably 60 or less, and may be, for example, 50 or less or 30 or less.

[0033] These repeating units may be linear or branched, and may contain a ring structure. For example, -(OCF 12 )- may be -(OCF2CF2CF2CF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2CF2CF2)-, -(OCF2CF(CF3)CF2CF2CF2)-, -(OCF2CF2CF(CF3)CF2CF2)-, -(OCF2CF2CF2CF(CF3)CF2)-, -(OCF2CF2CF2CF2CF(CF3)CF2)-, -(OCF2CF2CF2CF2CF(CF3))-, etc. 10 )- may be -(OCF2CF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2CF2)-, -(OCF2CF(CF3)CF2CF2)-, -(OCF2CF2CF(CF3)CF2)-, -(OCF2CF2CF2CF(CF3)CF2)-, -(OCF2CF2CF2CF(CF3))-, etc. -(OC4F8)- may be -(OCF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2)-, -(OCF2CF(CF3)CF2)-, -(OC(CF3)2CF2)-, -(OCF2C(CF3)2)-, -(OCF(CF3)CF(CF3))-, -(OCF(C2F5)CF2)-, and -(OCF2CF(C2F5))-. -(OC3F6)- (i.e., in the above formula, R Fa is a fluorine atom) may be any of -(OCFCFCF)-, -(OCF(CF)CF)-, and -(OCFCF(CF))-. -(OCF)- may be any of -(OCFCF)- and -(OCF(CF))-.

[0034] The ring structure may be a three-, four-, five-, or six-membered ring as shown below. [ka] [In the formula, * indicates the bonding position.]

[0035] The ring structure may be preferably a four-membered ring, a five-membered ring, or a six-membered ring, more preferably a four-membered ring or a six-membered ring.

[0036] The repeating unit having a ring structure may preferably be the following unit. [ka] [In the formula, * indicates the bonding position.]

[0037] In one embodiment, the repeating unit is linear. By making the repeating unit linear, the surface smoothness, friction durability, etc. of the surface treatment layer can be improved.

[0038] In one embodiment, the repeating unit is branched. By making the repeating unit branched, the dynamic friction coefficient of the surface treatment layer can be increased.

[0039] In one embodiment, R F are each independently a group represented by any one of the following formulas (f1) to (f6). -(OC3F6) d -(OC2F4) e - (f1) [In the formula, d is an integer of 1 to 200, and e is 0 or 1, preferably 0.] -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f2) [In the formula, c and d each independently represent an integer of 0 or more and 30 or less, and e and f each independently represent an integer of 1 or more and 200 or less, the sum of c, d, e, and f is 2 or more; The order of occurrence of each repeating unit enclosed in parentheses with c, d, e, or f is arbitrary in the formula. -(R 6 -R 7 ) g - (f3) [In the formula, R 6 is OCF2 or OC2F4, R 7 are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups independently selected from these groups, g is an integer from 2 to 100. -(R 6 -R 7 ) g -R r -(R 7’ -R 6’ ) g’ - (f4) [In the formula, R 6 is OCF2 or OC2F4, R 7 are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups independently selected from these groups, R 6’ is OCF2 or OC2F4, R 7’ are OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups independently selected from these groups, g is an integer from 2 to 100, g' is an integer from 2 to 100, R r teeth, [ka] (In the formula, * indicates the bonding position.) ]; -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.]

[0040] In the above formula (f1), d is preferably an integer of 5 to 200, more preferably 10 to 100, even more preferably 15 to 50, for example, an integer of 25 to 35. OC3F6 in the above formula (f1) is preferably (OCF2CF2CF2), (OCF(CF3)CF2) or (OCF2CF(CF3)), more preferably (OCF2CF2CF2). In one embodiment, e is 0. In another embodiment, e is 1. (OC2F4) in the above formula (f1) is preferably (OCF2CF2) or (OCF(CF3)), more preferably (OCF2CF2).

[0041] In the formula (f2), e and f are each independently an integer of preferably 5 to 200, more preferably 10 to 200. The sum of c, d, e and f is preferably 5 or more, more preferably 10 or more, and may be, for example, 15 or more or 20 or more. In one embodiment, the formula (f2) is preferably -(OCF2CF2CF2CF2) c -(OCF2CF2CF2) d -(OCF2CF2) e -(OCF2) f In another embodiment, formula (f2) is a group represented by -(OC2F4) e -(OCF2) f It may also be a group represented by the formula -.

[0042] In the above formula (f3), R 6 is preferably OC2F4. In the above (f3), R 7 is preferably a group selected from OC2F4, OC3F6 and OC4F8, or a combination of two or three groups independently selected from these groups, more preferably OC3F6 or OC4F8. The combination of two or three groups independently selected from OC2F4, OC3F6 and OC4F8 is not particularly limited, and examples thereof include -OC2F4OC3F6-, -OC2F4OC4F8-, -OC3F6OC2F4-, -OC3F6OC3F6-, -OC3F6OC4F8-, -OC4F8OC4F8-, -OC4F8OC3F6-, -OC4F8OC2F4-, -OC Examples include 2F4OC2F4OC3F6-, -OC2F4OC2F4OC4F8-, -OC2F4OC3F6OC2F4-, -OC2F4OC3F6OC3F6-, -OC2F4OC4F8OC2F4-, -OC3F6OC2F4OC2F4-, -OC3F6OC2F4OC2F4-, -OC3F6OC2F4OC3F6-, -OC3F6OC3F6OC2F4-, and -OC4F8OC2F4OC2F4-. In the above formula (f3), g is preferably an integer of 3 or more, more preferably 5 or more. The above g is preferably an integer of 50 or less. In the above formula (f3), OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12may be either a straight chain or a branched chain, and is preferably a straight chain. In this embodiment, the above formula (f3) is preferably -(OC2F4-OC3F6) g -or-(OC2F4-OC4F8) g -It is.

[0043] In the above formula (f4), R 6 , R 7 and g have the same meanings as those in the formula (f3) above, and have the same embodiments. 6’ , R 7’ and g' are R 6 , R 7 and g have the same meaning and similar aspects. r is preferably [ka] [In the formula, * indicates the bonding position.] and more preferably [ka] [In the formula, * indicates the bonding position.] is.

[0044] In the above formula (f5), e is preferably an integer of 1 or more and 100 or less, more preferably an integer of 5 or more and 100 or less. The sum of a, b, c, d, e, and f is preferably 5 or more, more preferably 10 or more, for example, 10 or more and 100 or less.

[0045] In the above formula (f6), f is preferably an integer of 1 or more and 100 or less, more preferably 5 or more and 100 or less. The sum of a, b, c, d, e, and f is preferably 5 or more, more preferably 10 or more, for example, 10 or more and 100 or less.

[0046] In one embodiment, R F is a group represented by the above formula (f1).

[0047] In one embodiment, R Fis a group represented by the above formula (f2).

[0048] In one embodiment, R F is a group represented by the above formula (f3) or (f4).

[0049] In one embodiment, the R F is a group represented by the above formula (f3).

[0050] In one embodiment, the R F is a group represented by the above formula (f4).

[0051] In one embodiment, R F is a group represented by the above formula (f5).

[0052] In one embodiment, R F is a group represented by the above formula (f6).

[0053] R F In the formula, the ratio of e to f (hereinafter referred to as "e / f ratio") is preferably 0.1 to 10, more preferably 0.2 to 5, even more preferably 0.2 to 2, even more preferably 0.2 to 1.5, and particularly preferably 0.2 to 0.85. By setting the e / f ratio to 10 or less, the slipperiness, friction durability, and chemical resistance (e.g., durability against artificial sweat) of the surface treatment layer obtained from this compound can be further improved. The smaller the e / f ratio, the more improved the slipperiness and friction durability of the surface treatment layer. On the other hand, by setting the e / f ratio to 0.1 or more, the stability of the compound can be further improved. The larger the e / f ratio, the more improved the stability of the compound.

[0054] In one embodiment, from the viewpoint of heat resistance, the e / f ratio may be preferably 1.0 or more, and more preferably 1.0 to 2.0.

[0055] In the above fluoropolyether group-containing silane compound, R FA1 and R FB2The number average molecular weight of the R moiety is not particularly limited, but is, for example, 500 to 30,000, preferably 1,500 to 30,000, and more preferably 2,000 to 10,000. FA1 and R FA2 The number average molecular weight of 19 The value is measured by F-NMR.

[0056] In formulas (A1) and (A2), R Si are each independently a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom bonded to a monovalent group, and at least one R Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded.

[0057] In a preferred embodiment, R Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded, more preferably a monovalent group containing a Si atom to which a hydrolyzable group is bonded.

[0058] In a preferred embodiment, R Si is the following formula (S1), (S2), (S3), (S4) or (S5): [ka] It is a group represented by the following formula:

[0059] In the above formula, R 11 are each independently a hydroxyl group or a hydrolyzable group.

[0060] R 11 are preferably each independently a hydrolyzable group.

[0061] R 11 are preferably each independently -OR h1 , -OCOR h1 , -ON=CR h1 , -NR h1 2, -NHR h1 , —NCO, or halogen (wherein R h1is a substituted or unsubstituted C 1-4 alkyl group), and more preferably -OR h1 (i.e., an alkoxy group). h1 Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, particularly unsubstituted alkyl groups, are preferred, and methyl or ethyl groups are more preferred. In one embodiment, R h1 is a methyl group. h1 is an ethyl group.

[0062] In the above formula, R 12 are each independently a hydrogen atom or a monovalent group. Such monovalent groups are monovalent groups excluding the above-mentioned hydrogen atoms, hydroxyl groups, and hydrolyzable groups.

[0063] The monovalent group is preferably a monovalent organic group, excluding the hydrolyzable groups.

[0064] R 12 In the formula, the monovalent group is preferably C 1-20 alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0065] In the above formula, n1 is (SiR 11 n1 R 12 3-n1 ) units are each independently an integer of 0 to 3, provided that R Si is a group represented by formula (S1) or (S2), the terminal R Si In the moiety (hereinafter also simply referred to as the "terminal moiety" of formula (A1) and formula (A2)), n1 is 1 to 3 (SiR 11 n1 R 12 3-n1) unit is present. That is, in such a terminal portion, all n1s do not simultaneously become 0. In other words, in the terminal portion of formula (A1) and formula (A2), there is at least one Si atom to which a hydroxyl group or a hydrolyzable group is bonded.

[0066] n1 is (SiR 11 n1 R 12 3-n1 ) units are each independently an integer of preferably 1 to 3, more preferably 2 or 3, and even more preferably 3.

[0067] In the above formula, X 11 are each independently a single bond or a divalent group. Such a divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group. The divalent group is preferably a divalent organic group. Such a divalent organic group is preferably -R 28 -O x -R 29 -(In the formula, R 28 and R 29 are each independently a single bond or C 1-20 is an alkylene group, and x is 0 or 1. 1-20 The alkylene group may be straight-chain or branched, but is preferably straight-chain. 1-20 The alkylene group is preferably C 1-10 Alkylene groups, more preferably C 1-6 Alkylene groups, more preferably C 1-3 It is an alkylene group.

[0068] In one embodiment, X 11 are each independently -C 1-6 Alkylene-OC 1-6 Alkylene- or -OC 1-6 It is alkylene. 11 is bonded to Si on the right side.

[0069] In a preferred embodiment, X 11 are each independently a single bond or a linear C 1-6An alkylene group, preferably a single bond or a straight-chain C 1-3 Alkylene group, more preferably a single bond or a straight chain C 1-2 It is preferably a linear C alkylene group. 1-2 It is an alkylene group.

[0070] In the above formula, R 13 are each independently a hydrogen atom or a monovalent organic group. Such a monovalent organic group is preferably C 1-20 It is an alkyl group. 1-20 The alkyl group may be straight-chain or branched, but is preferably straight-chain.

[0071] In a preferred embodiment, R 13 are each independently a hydrogen atom or a straight-chain C 1-6 is an alkyl group, preferably a hydrogen atom or a straight-chain C 1-3 It is an alkyl group, preferably a hydrogen atom or a methyl group.

[0072] In the above formula, each t is independently an integer of 2 or greater.

[0073] Each t is independently preferably an integer of 2 to 10, more preferably an integer of 2 to 6.

[0074] In the above formula, R 14 are each independently a hydrogen atom, a halogen atom or -X 11 -SiR 11 n1 R 12 3-n1 Such a halogen atom is preferably an iodine atom, a chlorine atom, or a fluorine atom, more preferably a fluorine atom. In a preferred embodiment, R 14 is a hydrogen atom.

[0075] In the above formula, R 15 are each independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms. The alkyleneoxy group is an alkylene group that is13 is attached to the carbon atom having

[0076] In one embodiment, R 15 is independently in each occurrence an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms.

[0077] In a preferred embodiment, R 15 is a single bond.

[0078] In one embodiment, formula (S1) is formula (S1-a) below. [ka] [In the formula, R 11 , R 12 , R 13 , X 11 and n1 are as defined in the above formula (S1), t1 and t2 each independently represent an integer of 0 or more, preferably an integer of 1 or more, more preferably an integer of 1 to 10, still more preferably an integer of 2 to 10, for example, an integer of 1 to 5 or an integer of 2 to 5, and the sum of t1 and t2 is 2 or more, The repeating units enclosed in parentheses with t1 and t2 may occur in any order in the formula.]

[0079] In a preferred embodiment, formula (S1) is formula (S1-b) below. [ka] [In the formula, R 11 , R 12 , R 13 , X 11 , n1 and t are defined as in formula (S1) above.

[0080] In the above formula, R a1 are each independently -Z 1 -SiR 21 p1 R 22 q1 R23 r1 is.

[0081] Z 1 are each independently a divalent group. 1 The structure written as 21 p1 R 22 q1 R 23 r1 )

[0082] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group.

[0083] In a preferred embodiment, Z 1 is a divalent organic group.

[0084] In a preferred embodiment, Z 1 is Z 1 Preferably, in formula (S3), (Si-Z) does not include a compound that forms a siloxane bond with the Si atom to which (Si-Z) is bonded. 1 —Si) does not contain a siloxane bond.

[0085] Above Z 1 is preferably C 1-6 Alkylene group, -(CH2) z1 -O-(CH2) z2 - (wherein z1 is an integer of 0 to 6, for example, an integer of 1 to 6, and z2 is an integer of 0 to 6, for example, an integer of 1 to 6), or -(CH2) z3 -phenylene-(CH2) z4 - (wherein z3 is an integer of 0 to 6, for example, an integer of 1 to 6, and z4 is an integer of 0 to 6, for example, an integer of 1 to 6). 1-6 The alkylene group may be straight-chain or branched, but is preferably straight-chain. These groups may contain, for example, fluorine atoms, C 1-6 Alkyl group, C 2-6 Alkenyl groups, and C 2-6It may be substituted with one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0086] In a preferred embodiment, Z 1 is C 1-6 Alkylene group or -(CH2) z3 -phenylene-(CH2) z4 -, preferably -phenylene-(CH2) z4 -It is. Z 1 is such a group, the light resistance, particularly the ultraviolet resistance, can be improved.

[0087] In another preferred embodiment, the Z 1 is C 1-3 In one embodiment, Z is an alkylene group. 1 can be -CH2CH2CH2-. In another embodiment, Z 1 can be -CH2CH2-.

[0088] R 21 are each independently -Z 1’ -SiR 21’ p1’ R 22’ q1’ R 23’ r1’ is.

[0089] Above Z 1’ are each independently a divalent group. 1’ The structure written as 21’ p1’ R 22’ q1’ R 23’ r1’ )

[0090] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group.

[0091] In a preferred embodiment, Z 1’ is a divalent organic group.

[0092] In a preferred embodiment, Z 1’ is Z 1’ Preferably, in formula (S3), (Si-Z) does not include a compound that forms a siloxane bond with the Si atom to which (Si-Z) is bonded. 1’ —Si) does not contain a siloxane bond.

[0093] Above Z 1’ is preferably C 1-6 Alkylene group, -(CH2) z1’ -O-(CH2) z2’ - (wherein z1' is an integer of 0 to 6, for example, an integer of 1 to 6, and z2' is an integer of 0 to 6, for example, an integer of 1 to 6), or -(CH2) z3’ -phenylene-(CH2) z4’ - (wherein z3' is an integer of 0 to 6, for example, an integer of 1 to 6, and z4' is an integer of 0 to 6, for example, an integer of 1 to 6). 1-6 The alkylene group may be straight-chain or branched, but is preferably straight-chain. These groups may contain, for example, fluorine atoms, C 1-6 Alkyl group, C 2-6 Alkenyl groups, and C 2-6 It may be substituted with one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0094] In a preferred embodiment, Z 1’ is C 1-6 Alkylene group or -(CH2) z3’ -phenylene-(CH2) z4’ -, preferably -phenylene-(CH2) z4’ -It is. Z 1’ is such a group, the light resistance, particularly the ultraviolet resistance, can be improved.

[0095] In another preferred embodiment, the Z 1’ is C 1-3 In one embodiment, Z is an alkylene group. 1’ can be -CH2CH2CH2-. In another embodiment, Z 1’can be -CH2CH2-.

[0096] R 21’ are each independently -Z 1” -SiR 22” q1” R 23” r1” is.

[0097] Above Z 1” are each independently a divalent group. 1” The structure written as 22” q1” R 23” r1” )

[0098] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group.

[0099] In a preferred embodiment, Z 1” is a divalent organic group.

[0100] In a preferred embodiment, Z 1” is Z 1” Preferably, in formula (S3), (Si-Z) does not include a compound that forms a siloxane bond with the Si atom to which (Si-Z) is bonded. 1” —Si) does not contain a siloxane bond.

[0101] Above Z 1” is preferably C 1-6 Alkylene group, -(CH2) z1” -O-(CH2) z2” - (wherein z1" is an integer of 0 to 6, for example, an integer of 1 to 6, and z2" is an integer of 0 to 6, for example, an integer of 1 to 6), or -(CH2) z3” -phenylene-(CH2) z4” - (wherein z3" is an integer of 0 to 6, for example, an integer of 1 to 6, and z4" is an integer of 0 to 6, for example, an integer of 1 to 6). 1-6The alkylene group may be straight-chain or branched, but is preferably straight-chain. These groups may contain, for example, fluorine atoms, C 1-6 Alkyl group, C 2-6 Alkenyl groups, and C 2-6 It may be substituted with one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0102] In a preferred embodiment, Z 1” is C 1-6 Alkylene group or -(CH2) z3” -phenylene-(CH2) z4” -, preferably -phenylene-(CH2) z4” -It is. Z 1” is such a group, the light resistance, particularly the ultraviolet resistance, can be improved.

[0103] In another preferred embodiment, the Z 1” is C 1-3 In one embodiment, Z is an alkylene group. 1” can be -CH2CH2CH2-. In another embodiment, Z 1” can be -CH2CH2-.

[0104] R 22” are each independently a hydroxyl group or a hydrolyzable group.

[0105] R 22” are preferably each independently a hydrolyzable group.

[0106] R 22” are preferably each independently -OR h1 , -OCOR h1 , -ON=CR h1 2, -NR h1 2, -NHR h1 , —NCO, or halogen (wherein R h1 is a substituted or unsubstituted C 1-4 alkyl group), and more preferably -OR h1 (i.e., an alkoxy group). h1Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, particularly unsubstituted alkyl groups, are preferred, and methyl or ethyl groups are more preferred. In one embodiment, R h1 is a methyl group, and in another embodiment, R h1 is an ethyl group.

[0107] R 23” are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above-mentioned hydrolyzable groups.

[0108] In one embodiment, the monovalent organic group is C 1-20 alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0109] Each q1" is independently an integer of 0 to 3, and each r1" is independently an integer of 0 to 3. The sum of q1" and r1" is (SiR 22” q1” R 23” r1” ) units, it is 3.

[0110] The above q1" is (SiR 22” q1” R 23” r1” ) units are each independently an integer of preferably 1 to 3, more preferably 2 to 3, and even more preferably 3.

[0111] R 22’ are each independently a hydroxyl group or a hydrolyzable group.

[0112] R 22’ are preferably each independently a hydrolyzable group.

[0113] R 22’ are preferably each independently -OR h1, -OCOR h1 , -ON=CR h1 2, -NR h1 2, -NHR h1 , —NCO, or halogen (wherein R h1 is a substituted or unsubstituted C 1-4 alkyl group), and more preferably -OR h1 (i.e., an alkoxy group). h1 Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, particularly unsubstituted alkyl groups, are preferred, and methyl or ethyl groups are more preferred. In one embodiment, R h1 is a methyl group, and in another embodiment, R h1 is an ethyl group.

[0114] R 23’ are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above-mentioned hydrolyzable groups.

[0115] In one embodiment, the monovalent organic group is C 1-20 alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0116] Each of the above p1's is independently an integer of 0 to 3, each of the q1's is independently an integer of 0 to 3, and each of the r1's is independently an integer of 0 to 3. The sum of p', q1' and r1' is (SiR 21’ p1’ R 22’ q1’ R 23’ r1’ ) units, it is 3.

[0117] In one embodiment, p1' is 0.

[0118] In one embodiment, p1′ is (SiR 21’ p1’ R22’ q1’ R 23’ r1’ ) units may each independently be an integer of 1 to 3, an integer of 2 to 3, or 3. In a preferred embodiment, p1' is 3.

[0119] In one embodiment, q1′ is (SiR 21’ p1’ R 22’ q1’ R 23’ r1’ ) units are each independently an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0120] In one embodiment, p1' is 0 and q1' is (SiR 21’ p1’ R 22’ q1’ R 23’ r1’ ) units are each independently an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0121] R 22 are each independently a hydroxyl group or a hydrolyzable group.

[0122] R 22 are preferably each independently a hydrolyzable group.

[0123] R 22 are preferably each independently -OR h1 , -OCOR h1 , -ON=CR h1 2, -NR h1 2, -NHR h1 , —NCO, or halogen (wherein R h1 is a substituted or unsubstituted C 1-4 alkyl group), and more preferably -OR h1 (i.e., an alkoxy group). h1Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, particularly unsubstituted alkyl groups, are preferred, and methyl or ethyl groups are more preferred. In one embodiment, R h1 is a methyl group, and in another embodiment, R h1 is an ethyl group.

[0124] R 23 are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above-mentioned hydrolyzable groups.

[0125] In one embodiment, the monovalent organic group is C 1-20 alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0126] Each of the above p1's is independently an integer of 0 to 3, each of the q1's is independently an integer of 0 to 3, and each of the r1's is independently an integer of 0 to 3. The sum of p1, q1, and r1 is (SiR 21 p1 R 22 q1 R 23 r1 ) units, it is 3.

[0127] In one embodiment, p1 is 0.

[0128] In one embodiment, p1 is (SiR 21 p1 R 22 q1 R 23 r1 ) units may each independently be an integer of 1 to 3, an integer of 2 to 3, or 3. In a preferred embodiment, p1 is 3.

[0129] In one embodiment, q1 is (SiR 21 p1 R 22q1 R 23 r1 ) units are each independently an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0130] In one embodiment, p1 is 0 and q1 is (SiR 21 p1 R 22 q1 R 23 r1 ) units are each independently an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0131] In the above formula, R b1 are each independently a hydroxyl group or a hydrolyzable group.

[0132] R b1 are preferably each independently a hydrolyzable group.

[0133] R b1 are preferably each independently -OR h1 , -OCOR h1 , -ON=CR h1 2, -NR h1 2, -NHR h1 , —NCO, or halogen (wherein R h1 is a substituted or unsubstituted C 1-4 alkyl group), and more preferably -OR h1 (i.e., an alkoxy group). h1 Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, particularly unsubstituted alkyl groups, are preferred, and methyl or ethyl groups are more preferred. In one embodiment, R h1 is a methyl group, and in another embodiment, R h1 is an ethyl group.

[0134] In the above formula, R c1are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above-mentioned hydrolyzable groups.

[0135] In one embodiment, the monovalent organic group is C 1-20 alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0136] The above k1s are each independently an integer of 0 to 3, the l1s are each independently an integer of 0 to 3, and the m1s are each independently an integer of 0 to 3. The sum of k1, l1, and m1 is (SiR a1 k1 R b1 l1 R c1 m1 ) units, it is 3.

[0137] In one embodiment, k1 is (SiR a1 k1 R b1 l1 R c1 m1 ) units are each independently an integer of 1 to 3, preferably 2 or 3, more preferably 3. In a preferred embodiment, k1 is 3.

[0138] In formulas (A1) and (A2), R Si When is a group represented by formula (S3), preferably, at least two Si atoms having hydroxyl groups or hydrolyzable groups bonded thereto are present in the terminal portions of formula (A1) and formula (A2).

[0139] In a preferred embodiment, the group represented by formula (S3) is -Z 1 -SiR 22 q1 R 23 r1 (wherein q1 is an integer of 1 to 3, preferably 2 or 3, more preferably 3, and r1 is an integer of 0 to 2), -Z 1’ -SiR 22’ q1’ R 23’r1’ (wherein q1' is an integer of 1 to 3, preferably 2 or 3, more preferably 3, and r1' is an integer of 0 to 2), or -Z 1” -SiR 22” q1” R 23” r1” (wherein q1″ is an integer of 1 to 3, preferably 2 or 3, more preferably 3, and r1″ is an integer of 0 to 2). Z 1 , Z 1’ , Z 1” , R 22 , R 23 , R 22’ , R 23’ , R 22” , and R 23” has the same meaning as above.

[0140] In a preferred embodiment, in formula (S3), R 21’ When present, at least one, preferably all, R 21’ In the formula, q1″ is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0141] In a preferred embodiment, in formula (S3), R 21 When present, at least one, preferably all, R 21 In the formula (I), p1' is 0, and q1' is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0142] In a preferred embodiment, in formula (S3), R a1 When present, at least one, preferably all, R a1 In the formula (I), p1 is 0, and q1 is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0143] In a preferred embodiment, in formula (S3), k1 is 2 or 3, preferably 3; p1 is 0; and q1 is 2 or 3, preferably 3.

[0144] In one embodiment, formula (S3) does not contain a siloxane bond.

[0145] R d1 are each independently -Z 2 -CR 31 p2 R 32 q2 R 33 r2 is.

[0146] Z 2 are each independently a single bond or a divalent group. 2 The structure written as (CR 31 p2 R 32 q2 R 33 r2 )

[0147] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group.

[0148] Z 2 are each independently preferably an oxygen atom or a divalent organic group, more preferably a divalent organic group.

[0149] Above Z 2 is preferably C 1-6 Alkylene group, -(CH2) z5 -O-(CH2) z6 - (wherein z5 is an integer of 0 to 6, for example, an integer of 1 to 6, and z6 is an integer of 0 to 6, for example, an integer of 1 to 6), or -(CH2) z7 -phenylene-(CH2) z8 - (wherein z7 is an integer of 0 to 6, for example, an integer of 1 to 6, and z8 is an integer of 0 to 6, for example, an integer of 1 to 6). 1-6 The alkylene group may be straight-chain or branched, but is preferably straight-chain. These groups may contain, for example, fluorine atoms, C 1-6 Alkyl group, C 2-6 Alkenyl groups, and C2-6 It may be substituted with one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0150] In a preferred embodiment, Z 2 is C 1-6 Alkylene group or -(CH2) z7 -phenylene-(CH2) z8 -, preferably -phenylene-(CH2) z8 -It is. Z 2 is such a group, the light resistance, particularly the ultraviolet resistance, can be improved.

[0151] In another preferred embodiment, the Z 2 is C 1-3 In one embodiment, Z is an alkylene group. 2 can be -CH2CH2CH2-. In another embodiment, Z 2 can be -CH2CH2-.

[0152] R 31 are each independently -Z 2’ -CR 32’ q2’ R 33’ r2’ is.

[0153] Z 2’ are each independently a single bond or a divalent group. 2’ The structure written as (CR 32’ q2’ R 33’ r2’ )

[0154] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group.

[0155] Z 2’ are each independently preferably an oxygen atom or a divalent organic group, more preferably a divalent organic group.

[0156] Above Z 2’ is preferably C 1-6 Alkylene group, -(CH2) z5’ -O-(CH2) z6’ - (wherein z5' is an integer of 0 to 6, for example, an integer of 1 to 6, and z6' is an integer of 0 to 6, for example, an integer of 1 to 6), or -(CH2) z7’ -phenylene-(CH2) z8’ - (wherein z7' is an integer of 0 to 6, for example, an integer of 1 to 6, and z8' is an integer of 0 to 6, for example, an integer of 1 to 6). 1-6 The alkylene group may be straight-chain or branched, but is preferably straight-chain. These groups may contain, for example, fluorine atoms, C 1-6 Alkyl group, C 2-6 Alkenyl groups, and C 2-6 It may be substituted with one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0157] In a preferred embodiment, Z 2’ is C 1-6 Alkylene group or -(CH2) z7’ -phenylene-(CH2) z8’ -, preferably -phenylene-(CH2) z8’ -It is. Z 2’ is such a group, the light resistance, particularly the ultraviolet resistance, can be improved.

[0158] In another preferred embodiment, the Z 2’ is C 1-3 In one embodiment, Z is an alkylene group. 2’ can be -CH2CH2CH2-. In another embodiment, Z 2’ can be -CH2CH2-.

[0159] R 32’ are each independently -Z 3 -SiR 34 n2 R 35 3-n2 is.

[0160] Above Z3 are each independently a single bond or a divalent group. 3 The structure written as 34 n2 R 35 3-n2 )

[0161] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group.

[0162] Z 3 are each independently preferably an oxygen atom or a divalent organic group, more preferably a divalent organic group.

[0163] In one embodiment, Z 3 is an oxygen atom.

[0164] In one embodiment, Z 3 is a divalent organic group.

[0165] Above Z 3 is preferably C 1-6 Alkylene group, -(CH2) z5” -O-(CH2) z6” - (wherein z5" is an integer of 0 to 6, for example, an integer of 1 to 6, and z6" is an integer of 0 to 6, for example, an integer of 1 to 6), or -(CH2) z7” -phenylene-(CH2) z8” - (wherein z7" is an integer of 0 to 6, for example, an integer of 1 to 6, and z8" is an integer of 0 to 6, for example, an integer of 1 to 6). 1-6 The alkylene group may be straight-chain or branched, but is preferably straight-chain. These groups may contain, for example, fluorine atoms, C 1-6 Alkyl group, C 2-6 Alkenyl groups, and C 2-6 It may be substituted with one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0166] In a preferred embodiment, Z3 is C 1-6 Alkylene group or -(CH2) z7” -phenylene-(CH2) z8” -, preferably -phenylene-(CH2) z8” -It is. Z 3 is such a group, the light resistance, particularly the ultraviolet resistance, can be improved.

[0167] In another preferred embodiment, the Z 3 is C 1-3 In one embodiment, Z is an alkylene group. 3 can be -CH2CH2CH2-. In another embodiment, Z 3 can be -CH2CH2-.

[0168] R 34 are each independently a hydroxyl group or a hydrolyzable group.

[0169] R 34 are preferably each independently a hydrolyzable group.

[0170] R 34 are preferably each independently -OR h1 , -OCOR h1 , -ON=CR h1 2, -NR h1 2, -NHR h1 , —NCO, or halogen (wherein R h1 is a substituted or unsubstituted C 1-4 alkyl group), and more preferably -OR h1 (i.e., an alkoxy group). h1 Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, particularly unsubstituted alkyl groups, are preferred, and methyl or ethyl groups are more preferred. In one embodiment, R h1 is a methyl group, and in another embodiment, R h1 is an ethyl group.

[0171] R 35 are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above-mentioned hydrolyzable groups.

[0172] R 35 In the formula, the monovalent organic group is preferably C 1-20 alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0173] In the above formula, n2 is (SiR 34 n2 R 35 3-n2 ) units are each independently an integer of 0 to 3, provided that R Si is a group represented by formula (S4), n2 is 1 to 3 (SiR 34 n2 R 35 3-n2 ) unit is present. That is, in such a terminal portion, all n2s do not simultaneously become 0. In other words, in the terminal portion of formula (A1) and formula (A2), there is at least one Si atom to which a hydroxyl group or a hydrolyzable group is bonded.

[0174] n2 is (SiR 34 n2 R 35 3-n2 ) units are each independently an integer of preferably 1 to 3, more preferably 2 or 3, and even more preferably 3.

[0175] R 33’ are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above-mentioned hydrolyzable groups.

[0176] R 33’ In the formula, the monovalent organic group is preferably C 1-20 Alkyl group or R 41’ -(OR 42’ ) y1’ -Oy2’ -(In the formula, R 41’ is a hydrogen atom or C 1-6 is an alkyl group, and R 42’ are each independently 1-6 is an alkylene group, y1′ is an integer of 1 to 30, and y2′ is 0 or 1.

[0177] In one embodiment, R 41’ is a hydrogen atom.

[0178] In another embodiment, R 41’ is C 1-6 Alkyl groups, preferably C 1-3 It is an alkyl group.

[0179] R 42’ are each independently 1-6 Alkylene group, preferably C 1-3 Alkylene groups, more preferably C 2-3 It is an alkylene group.

[0180] y1' is an integer of 1 to 30, preferably an integer of 1 to 20, more preferably an integer of 1 to 10, and even more preferably an integer of 2 to 10, for example, an integer of 2 to 6, an integer of 2 to 4, an integer of 3 to 6, or an integer of 4 to 6.

[0181] In one embodiment, R 33’ is a hydroxyl group.

[0182] In another embodiment, R 33’ is C 1-20 alkyl group, more preferably C 1-6 It is an alkyl group.

[0183] In another embodiment, R 33’ is R 41’ -(OR 42’ ) y1’ -O y2’ -It is.

[0184] The above q2's are each independently an integer of 0 to 3, and the above r2's are each independently an integer of 0 to 3. The sum of q2' and r2' is (CR 32’ q2’ R 33’ r2’ ) units, it is 3.

[0185] q2' is (CR 32’ q2’ R 33’ r2’ ) units are each independently an integer of preferably 1 to 3, more preferably 2 or 3, and even more preferably 3.

[0186] R 32 are each independently -Z 3 -SiR 34 n2 R 35 3-n2 It takes -Z 3 -SiR 34 n2 R 35 3-n2 is the above R 32’ This has the same meaning as the description in

[0187] R 33 are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above-mentioned hydrolyzable groups.

[0188] R 33 In the formula, the monovalent organic group is preferably C 1-20 Alkyl group or R 41 -(OR 42 ) y1 -O y2 -(In the formula, R 41 is a hydrogen atom or C 1-6 is an alkyl group, and R 42 are each independently 1-6 is an alkylene group, y1 is an integer of 1 to 30, and y2 is 0 or 1.

[0189] In one embodiment, R41 is a hydrogen atom.

[0190] In another embodiment, R 41 is C 1-6 Alkyl groups, preferably C 1-3 It is an alkyl group.

[0191] R 42 are each independently 1-6 Alkylene group, preferably C 1-3 Alkylene groups, more preferably C 2-3 It is an alkylene group.

[0192] y1 is an integer of 1 to 30, preferably an integer of 1 to 20, more preferably an integer of 1 to 10, and even more preferably an integer of 2 to 10, for example, an integer of 2 to 6, an integer of 2 to 4, an integer of 3 to 6, or an integer of 4 to 6.

[0193] In one embodiment, R 33 is a hydroxyl group.

[0194] In another embodiment, R 33 is C 1-20 alkyl group, more preferably C 1-6 It is an alkyl group.

[0195] In another embodiment, R 33 is R 41 -(OR 42 ) y1 -O y2 -It is.

[0196] The above p2's are each independently an integer of 0 to 3, the q2's are each independently an integer of 0 to 3, and the r2's are each independently an integer of 0 to 3. The sum of p2, q2, and r2 is (CR 31 p2 R 32 q2 R 33 r2 ) units, it is 3.

[0197] In one embodiment, p2 is 0.

[0198] In one embodiment, p2 is (CR 31 p2 R 32 q2 R 33 r2 ) units may each independently be an integer of 1 to 3, an integer of 2 to 3, or 3. In a preferred embodiment, p2 is 3.

[0199] In one embodiment, q2 is (CR 31 p2 R 32 q2 R 33 r2 ) units are each independently an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0200] In one embodiment, p2 is 0 and q2 is (CR 31 p2 R 32 q2 R 33 r2 ) units are each independently an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0201] R e1 are each independently -Z 3 -SiR 34 n2 R 35 3-n2 It takes -Z 3 -SiR 34 n2 R 35 3-n2 is the above R 32’ This has the same meaning as the description in

[0202] R f1 are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above-mentioned hydrolyzable groups.

[0203] R f1In the formula, the monovalent organic group is preferably C 1-20 Alkyl group or R 43 -(OR 44 ) y3 -O y4 -(In the formula, R 43 is a hydrogen atom or C 1-6 is an alkyl group, and R 44 are each independently 1-6 is an alkylene group, y3 is an integer of 1 to 30, and y4 is 0 or 1.

[0204] In one embodiment, R 43 is a hydrogen atom.

[0205] In another embodiment, R 43 is C 1-6 Alkyl groups, preferably C 1-3 It is an alkyl group.

[0206] R 44 are each independently 1-6 Alkylene group, preferably C 1-3 Alkylene groups, more preferably C 2-3 It is an alkylene group.

[0207] y3 is an integer of 1 to 30, preferably an integer of 1 to 20, more preferably an integer of 1 to 10, and even more preferably an integer of 2 to 10, for example, an integer of 2 to 6, an integer of 2 to 4, an integer of 3 to 6, or an integer of 4 to 6.

[0208] In one embodiment, R f1 is a hydroxyl group.

[0209] In another embodiment, R f1 is C 1-20 alkyl group, more preferably C 1-6 It is an alkyl group.

[0210] In another embodiment, R f1 is R 43 -(OR 44 ) y3 -Oy4 -It is.

[0211] The above k2's are each independently an integer of 0 to 3, the l2's are each independently an integer of 0 to 3, and the m2's are each independently an integer of 0 to 3. The sum of k2, l2, and m2 is (CR d1 k2 R e1 l2 R f1 m2 ) units, it is 3.

[0212] In formulas (A1) and (A2), R Si When is a group represented by formula (S4), preferably, at least two Si atoms having hydroxyl groups or hydrolyzable groups bonded thereto are present in the terminal portions of formula (A1) and formula (A2).

[0213] In one embodiment, R Si is a group represented by formula (S4), n2 is 1 to 3, preferably 2 or 3, more preferably 3 (SiR 34 n2 R 35 3-n2 ) units are present at each terminal portion of formula (A1) and formula (A2) by two or more, for example, 2 to 27, preferably 2 to 9, more preferably 2 to 6, even more preferably 2 to 3, and particularly preferably 3.

[0214] In a preferred embodiment, in formula (S4), R 32’ When present, at least one, preferably all, R 32’ In the formula, n2 is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0215] In a preferred embodiment, in formula (S4), R 32 When present, at least one, preferably all, R 32 In the formula, n2 is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0216] In a preferred embodiment, in formula (S4), R e1 When present, at least one, preferably all, R a1 In the formula, n2 is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0217] In a preferred embodiment, in formula (S4), k2 is 0, l2 is 2 or 3, preferably 3, and n2 is 2 or 3, preferably 3.

[0218] In one embodiment, formula (S4) does not contain a siloxane bond.

[0219] R g1 and R h1 are each independently -Z 4 -SiR 11 n1 R 12 3-n1 , -Z 4 -SiR a1 k1 R b1 l1 R c1 m1 , -Z 4 -CR d1 k2 R e1 l2 R f1 m2 Here, R 11 , R 12 , R a1 , R b2 , R c1 , R d1 , R e1 , R f1 , n1, k1, l1, m1, k2, l2, and m2 have the same meanings as above.

[0220] In a preferred embodiment, R g1 and R h1 are each independently -Z 4 -SiR 11 n1 R 12 3-n1 is.

[0221] Above Z 4 are each independently a single bond or a divalent group. 4 The structure written as 11 n1 R 12 3-n1 )

[0222] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group.

[0223] Z 4 are each independently preferably an oxygen atom or a divalent organic group, more preferably a divalent organic group.

[0224] In one embodiment, Z 4 is an oxygen atom.

[0225] In one embodiment, Z 4 is a divalent organic group.

[0226] Above Z 4 is preferably C 1-6 Alkylene group, -(CH2) z5” -O-(CH2) z6” - (wherein z5" is an integer of 0 to 6, for example, an integer of 1 to 6, and z6" is an integer of 0 to 6, for example, an integer of 1 to 6), or -(CH2) z7” -phenylene-(CH2) z8” - (wherein z7" is an integer of 0 to 6, for example, an integer of 1 to 6, and z8" is an integer of 0 to 6, for example, an integer of 1 to 6). 1-6 The alkylene group may be straight-chain or branched, but is preferably straight-chain. These groups may contain, for example, fluorine atoms, C 1-6 Alkyl group, C 2-6 Alkenyl groups, and C 2-6 It may be substituted with one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0227] In a preferred embodiment, Z 4 is C 1-6 Alkylene group or -(CH2) z7” -phenylene-(CH2) z8” -, preferably -phenylene-(CH2) z8” -It is. Z 3 is such a group, the light resistance, particularly the ultraviolet resistance, can be improved.

[0228] In another preferred embodiment, the Z 4 is C 1-3 In one embodiment, Z is an alkylene group. 4 can be -CH2CH2CH2-. In another embodiment, Z 4 can be -CH2CH2-.

[0229] In one embodiment, R Si is a group represented by formula (S2), (S3), (S4) or (S5): These compounds can form a surface treatment layer having high surface slip properties.

[0230] In one embodiment, R Si is a group represented by formula (S1), (S3), (S4), or (S5). These compounds have multiple hydrolyzable groups at one end, and therefore can form a surface treatment layer that adheres strongly to the substrate and has high friction resistance.

[0231] In one embodiment, R Si is a group represented by formula (S1), (S3), or (S4). These compounds have multiple hydrolyzable groups at one end, and therefore can form a surface treatment layer that adheres strongly to the substrate and has high friction resistance.

[0232] In one embodiment, R Si is a group represented by formula (S3) or (S4). These compounds can have multiple hydrolyzable groups branched from one Si atom or C atom at one end, and therefore can form a surface treatment layer with even higher friction durability.

[0233] In one embodiment, R Si is a group represented by formula (S1).

[0234] In one embodiment, R Si is a group represented by formula (S2).

[0235] In one embodiment, R Si is a group represented by formula (S3).

[0236] In one embodiment, R Si is a group represented by formula (S4).

[0237] In one embodiment, R Si is a group represented by formula (S5).

[0238] In formula (A1), α1 is an integer of 1 to 9, and β1 is an integer of 1 to 9. These α1 and β1 are determined by X A The sum of α1 and β1 can vary depending on the valence of X A For example, X A When X is a decavalent group, the sum of α1 and β1 is 10, and for example, α1 can be 9 and β1 can be 1, α1 can be 5 and β1 can be 5, or α1 can be 1 and β1 can be 9. A is a divalent group, α1 and β1 are 1.

[0239] In formula (A2), γ1 is an integer of 1 to 9. γ1 is X A That is, γ1 can change depending on the valence of X A is the valence of the element minus 1.

[0240] In formulas (A1) and (A2), X A The fluoropolyether moiety (R) mainly provides water repellency and surface slipperiness. FA1 and R FA2 ) and the substrate. Si ) and the linker. Amay be a single bond or any other group as long as the compounds represented by formulae (A1) and (A2) can exist stably.

[0241] X A are each independently a single bond or a divalent to decavalent group.

[0242] X A are each independently preferably a single bond or a divalent to decavalent organic group.

[0243] In one embodiment, X A does not contain a siloxane bond (-Si-O-Si-).

[0244] Above X A The divalent to decavalent group in the formula (I) is preferably a divalent to octavalent group. In one embodiment, the divalent to decavalent group is preferably a divalent to tetravalent group, and more preferably a divalent group. In another embodiment, the divalent to decavalent group is preferably a trivalent to octavalent group, and more preferably a trivalent to hexavalent group.

[0245] In one embodiment, X A is a single bond or a divalent group, α1 is 1, and β1 is 1.

[0246] In one embodiment, X A is a single bond or a divalent group, and γ1 is 1.

[0247] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group, and even more preferably a divalent organic group.

[0248] In one embodiment, X A represents a trivalent to hexavalent group, preferably a trivalent to hexavalent organic group; α1 is 1; and β1 is 2 to 5.

[0249] In one embodiment, X A is a trivalent to hexavalent group, preferably a trivalent to hexavalent organic group; γ1 is 2 to 5.

[0250] In one embodiment, X A is a trivalent group, preferably a trivalent organic group, α1 is 1, and β1 is 2.

[0251] In one embodiment, X A is a trivalent group, preferably a trivalent organic group, and γ1 is 2.

[0252] X A is a single bond or a divalent group, the formulae (A1) and (A2) are represented by the following formulae (A1') and (A2'). [ka]

[0253] In one embodiment, X A is a single bond.

[0254] In another embodiment, X A is a divalent organic group.

[0255] In one embodiment, X A Examples of the group include a single bond and the group represented by the following formula: -(R 51 ) p5 -(X 51 ) q5 - [In formula: R 51 is a single bond, -(CH2) s5 - or an o-, m- or p-phenylene group, preferably -(CH2) s5 - and s5 is an integer of 1 to 20, preferably an integer of 1 to 6, more preferably an integer of 1 to 3, and even more preferably 1 or 2; X 51 is -(X 52 ) l5 - represents X 52 are each independently -O-, -S-, o-, m- or p-phenylene group, -C(O)O-, -Si(R53 )2-, -(Si(R 53 )2O) m5 -Si(R 53 )2-, -CONR 54 -, -O-CONR 54 -, -NR 54 - and -(CH2) n5 represents a group selected from the group consisting of - R 53 are each independently a phenyl group, C 1-6 Alkyl group or C 1-6 represents an alkoxy group, preferably a phenyl group or C 1-6 is an alkyl group, more preferably a methyl group; R 54 are each independently a hydrogen atom, a phenyl group, or C 1-6 represents an alkyl group (preferably a methyl group), m5 in each occurrence is independently an integer of 1 to 100, preferably an integer of 1 to 20; n5, in each occurrence, is independently an integer from 1 to 20, preferably an integer from 1 to 6, more preferably an integer from 1 to 3; l5 is an integer of 1 to 10, preferably an integer of 1 to 5, more preferably an integer of 1 to 3, p5 is 0 or 1; q5 is 0 or 1, wherein at least one of p5 and q5 is 1, and the repeating units enclosed in parentheses with p5 or q5 may be present in any order; The right side is R Si Binds to.] Here, X is a divalent organic group represented by the formula: A (Typically X A hydrogen atoms) are fluorine atoms, C 1-3 Alkyl groups and C 1-3 In a preferred embodiment, X A is not substituted with these groups.

[0256] In a preferred embodiment, the XA are each independently -(R 51 ) p5 -(X 51 ) q5 -R 52 -R 52 is a single bond, -(CH2) t5 - or an o-, m- or p-phenylene group, preferably -(CH2) t5 t5 is an integer of 1 to 20, preferably an integer of 2 to 6, more preferably an integer of 2 to 3. Here, R 52 (Typically R 52 hydrogen atoms) are fluorine atoms, C 1-3 Alkyl groups and C 1-3 In a preferred embodiment, R 56 is not substituted with these groups.

[0257] Preferably, the above X A are each independently single bond, C 1-20 an alkylene group, -R 51 -X 53 -R 52 -or -X 54 -R 5 - [In the formula, R 51 and R 52 has the same meaning as above, X 53 teeth, -O-, -S-, -C(O)O-, -CONR 54 -, -O-CONR 54 -, -Si(R 53 )2-, -(Si(R 53 )2O) m5 -Si(R 53 )2-, -O-(CH2) u5 -(Si(R53 )2O) m5 -Si(R 53 )2-, -O-(CH2) u5 -Si(R 53 )2-O-Si(R 53 )2-CH2CH2-Si(R 53 )2-O-Si(R 53 )2-, -O-(CH2) u5 -Si(OCH3)2OSi(OCH3)2-, -CONR 54 -(CH2) u5 -(Si(R 53 )2O) m5 -Si(R 53 )2-, -CONR 54 -(CH2) u5 -N(R 54 )-, or -CONR 54 -(o-, m- or p-phenylene)-Si(R 53 )2- (In the formula, R 53 , R 54 and m5 have the same meaning as above, u5 represents an integer of 1 to 20, preferably an integer of 2 to 6, more preferably an integer of 2 or 3; X 54 teeth, -S-, -C(O)O-, -CONR 54 -, -O-CONR 54 -, -CONR 54 -(CH2) u5 -(Si(R 54 )2O) m5 -Si(R 54 )2-, -CONR 54 -(CH2) u5 -N(R 54 )-, or -CONR 54 -(o-, m- or p-phenylene)-Si(R 54 )2- (In the formula, each symbol has the same meaning as above.) represents.] It could be.

[0258] More preferably, the above X A are each independently single bond, C 1-20 an alkylene group, -(CH2) s5 -X 53 -, -(CH2) s5 -X 53 -(CH2) t5 - -X 54 -or -X 54 -(CH2) t5 - [In the formula, X 53 , X 54 , s5 and t5 have the same meanings as above.] is.

[0259] More preferably, the above X A are each independently single bond, C 1-20 an alkylene group, -(CH2) s5 -X 53 -(CH2) t5 -or -X 54 -(CH2) t5 - [In the formula, each symbol has the same meaning as above.] It could be.

[0260] In a preferred embodiment, the X A are each independently Single bond C 1-20 an alkylene group, -(CH2) s5 -X 53 -or -(CH2) s5 -X 53 -(CH2) t5 - [In the formula, X 53 -O-, -CONR 54 - or -O-CONR 54 - and R 54 are each independently a hydrogen atom, a phenyl group, or C 1-6 represents an alkyl group, s5 is an integer from 1 to 20, t5 is an integer from 1 to 20. It could be.

[0261] In a preferred embodiment, the X A are each independently -(CH2) s5 -O-(CH2) t5 - -CONR 54 -(CH2) t5 - [In the formula, R 54 are each independently a hydrogen atom, a phenyl group, or C 1-6 represents an alkyl group, s5 is an integer from 1 to 20, t5 is an integer from 1 to 20. It could be.

[0262] In one embodiment, the X A are each independently single bond, C 1-20 an alkylene group, -(CH2) s5 -O-(CH2) t5 -, -(CH2) s5 -(Si(R 53 )2O) m5 -Si(R 53 )2-(CH2) t5 -, -(CH2) s5 -O-(CH2) u5 -(Si(R 53 )2O) m5 -Si(R 53 )2-(CH2)t5 -or -(CH2) s5 -O-(CH2) t5 -Si(R 53 )2-(CH2) u5 -Si(R 53 )2-(C v H 2v )- [In the formula, R 53 , m5, s5, t5 and u5 are as defined above, and v5 is an integer of 1 to 20, preferably an integer of 2 to 6, more preferably an integer of 2 to 3.] is.

[0263] In the above formula, -(C v H 2v )- can be straight or branched chain, for example, -CH2CH2-, -CH2CH2CH2-, -CH(CH3)-, or -CH(CH3)CH2-.

[0264] Above X A are each independently a fluorine atom, C 1-3 Alkyl groups and C 1-3 Fluoroalkyl groups (preferably C 1-3 In one embodiment, X may be substituted with one or more substituents selected from the group consisting of fluoroalkyl groups, perfluoroalkyl groups, and the like. A is non-substituted.

[0265] In one embodiment, X A are each independently -OC 1-6 It may be other than an alkylene group.

[0266] In another embodiment, X A Examples of the group include the following: [ka] [ka] [In the formula, R 41 are each independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms, or C1-6 an alkoxy group, preferably a methyl group; D is -CH2O(CH2)2-, -CH2O(CH2)3-, -CF2O(CH2)3-, -(CH2)2-, -(CH2)3-, -(CH2)4-, -CONH-(CH2)3-, -CON(CH3)-(CH2)3-, -CON(Ph)-(CH2)3- (wherein Ph means phenyl), and [ka] (In the formula, R 42 are each independently a hydrogen atom, C 1-6 or C 1-6 represents an alkoxy group, preferably a methyl group or a methoxy group, more preferably a methyl group. is a group selected from E is -(CH2) n - (n is an integer from 2 to 6), D is the R of the molecular main chain FA1 or R FA2 E is bonded to R Si Binds to.]

[0267] Above X A Specific examples include: single bond, -CH2OCH2-, -CH2O(CH2)2-, -CH2O(CH2)3-, -CH2O(CH2)4-, -CH2O(CH2)5-, -CH2O(CH2)6-, -CH2O(CH2)3Si(CH3)2OSi(CH3)2(CH2)2-, -CH2O(CH2)3Si(CH3)2OSi(CH3)2OSi(CH3)2(CH2)2-, -CH2O(CH2)3Si(CH3)2O(Si(CH3)2O)2Si(CH3)2(CH2)2-、 -CH2O(CH2)3Si(CH3)2O(Si(CH3)2O)3Si(CH3)2(CH2)2-、 -CH2O(CH2)3Si(CH3)2O(Si(CH3)2O) 10 Si(CH3)2(CH2)2- -CH2O(CH2)3Si(CH3)2O(Si(CH3)2O) 20 Si(CH3)2(CH2)2- -CH2OCF2CHFOCF2-、 -CH2OCF2CHFOCF2CF2-、 -CH2OCF2CHFOCF2CF2CF2-、 -CH2OCH2CF2CF2OCF2-、 -CH2OCH2CF2CF2OCF2CF2-、 -CH2OCH2CF2CF2OCF2CF2CF2-、 -CH2OCH2CF2CF2OCF(CF3)CF2OCF2-、 -CH2OCH2CF2CF2OCF(CF3)CF2OCF2CF2-、 -CH2OCH2CF2CF2OCF(CF3)CF2OCF2CF2CF2-、 -CH2OCH2CHFCF2OCF2-、 -CH2OCH2CHFCF2OCF2CF2-、 -CH2OCH2CHFCF2OCF2CF2CF2-、 -CH2OCH2CHFCF2OCF(CF3)CF2OCF2-、 -CH2OCH2CHFCF2OCF(CF3)CF2OCF2CF2-、 -CH2OCH2CHFCF2OCF(CF3)CF2OCF2CF2CF2-、 -CH2OCF2CHFOCF2CF2CF2-C(O)NH-CH2-、 -CH2OCH2(CH2)7CH2Si(OCH3)2OSi(OCH3)2(CH2)2Si(OCH3)2OSi(OCH3)2(CH2)2-、 -CH2OCH2CH2CH2Si(OCH3)2OSi(OCH3)2(CH2)3-, -CH2OCH2CH2CH2Si(OCH2CH3)2OSi(OCH2CH3)2(CH2)3-, -CH2OCH2CH2CH2Si(OCH3)2OSi(OCH3)2(CH2)2-, -CH2OCH2CH2CH2Si(OCH2CH3)2OSi(OCH2CH3)2(CH2)2-, -(CH2)2-Si(CH3)2-(CH2)2-, -CH2-, -(CH2)2-, -(CH2)3-, -(CH2)4-, -(CH2)5-, -(CH2)6-, -CO-, -CONH-, -CONH-CH2-, -CONH-(CH2)2-, -CONH-(CH2)3-, -CONH-(CH2)4-, -CONH-(CH2)5-, -CONH-(CH2)6-, -CON(CH3)-CH2-, -CON(CH3)-(CH2)2-, -CON(CH3)-(CH2)3-, -CON(CH3)-(CH2)4-, -CON(CH3)-(CH2)5-, -CON(CH3)-(CH2)6-, -CON(Ph)-CH- (wherein Ph means phenyl), -CON(Ph)-(CH)- (wherein Ph means phenyl), -CON(Ph)-(CH2)3- (wherein Ph means phenyl), -CON(Ph)-(CH2)4- (wherein Ph means phenyl), -CON(Ph)-(CH2)5- (wherein Ph means phenyl), -CON(Ph)-(CH2)6- (where Ph means phenyl), -CONH-(CH2)2NH(CH2)3-, -CONH-(CH2)6NH(CH2)3-, -CH2O-CONH-(CH2)3-, -CH2O-CONH-(CH2)6-, -S-(CH2)3-, -(CH2)2S(CH2)3-, -CONH-(CH2)3Si(CH3)2OSi(CH3)2(CH2)2-, -CONH-(CH2)3Si(CH3)2OSi(CH3)2OSi(CH3)2(CH2)2-, -CONH-(CH2)3Si(CH3)2O(Si(CH3)2O)2Si(CH3)2(CH2)2-, -CONH-(CH2)3Si(CH3)2O(Si(CH3)2O)3Si(CH3)2(CH2)2-, -CONH-(CH2)3Si(CH3)2O(Si(CH3)2O) 10 Si(CH3)2(CH2)2-, -CONH-(CH2)3Si(CH3)2O(Si(CH3)2O) 20 Si(CH3)2(CH2)2-, -C(O)O-(CH2)3-, -C(O)O-(CH2)6-, -CH2-O-(CH2)3-Si(CH3)2-(CH2)2-Si(CH3)2-(CH2)2-, -CH2-O-(CH2)3-Si(CH3)2-(CH2)2-Si(CH3)2-CH(CH3)-, -CH2-O-(CH2)3-Si(CH3)2-(CH2)2-Si(CH3)2-(CH2)3-, -CH2-O-(CH2)3-Si(CH3)2-(CH2)2-Si(CH3)2-CH(CH3)-CH2-, -OCH2-, -O(CH2)3-,[[ID=4​ [ka] Examples include:

[0268] In yet another embodiment, X A are each independently a group of the formula: -(R 16 ) x1 -(CFR 17 ) y1 -(CH2) z1 In the formula, x1, y1, and z1 each independently represent an integer of 0 to 10, the sum of x1, y1, and z1 is 1 or more, and the order of the repeating units enclosed in parentheses in the formula is arbitrary.

[0269] In the above formula, R 16 each independently represents an oxygen atom, phenylene, carbazolylene, or -NR 18 -(In the formula, R 18 represents a hydrogen atom or an organic group) or a divalent organic group. Preferably, R 18 is an oxygen atom or a divalent polar group.

[0270] The "divalent polar group" is not particularly limited, but examples thereof include -C(O)-, -C(=NR 19 )- and -C(O)NR 19 -(wherein R 19 represents a hydrogen atom or a lower alkyl group). The "lower alkyl group" is, for example, an alkyl group having 1 to 6 carbon atoms, such as methyl, ethyl, or n-propyl, which may be substituted with one or more fluorine atoms.

[0271] In the above formula, R 17are each independently a hydrogen atom, a fluorine atom or a lower fluoroalkyl group, preferably a fluorine atom. The "lower fluoroalkyl group" is, for example, a fluoroalkyl group having 1 to 6 carbon atoms, preferably 1 to 3 carbon atoms, a perfluoroalkyl group having 1 to 3 carbon atoms, more preferably a trifluoromethyl group or a pentafluoroethyl group, and even more preferably a trifluoromethyl group.

[0272] Furthermore, the above X A The left side of each equation is R FA1 or R FA2 and the right side is R Si Combine with.

[0273] In yet another embodiment, X A Examples of include the following groups: [ka] [In the formula, R 41 are each independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms, or C 1-6 The alkoxy group is preferably a methyl group, each X A In the group, any number of T's may be R's in the molecular main chain. FA1 or R FA2 The following groups are attached to: -CH2O(CH2)2-, -CH2O(CH2)3-, -CF2O(CH2)3-, -(CH2)2-, -(CH2)3-, -(CH2)4-, -CONH-(CH2)3-, -CON(CH3)-(CH2)3-, -CON(Ph)-(CH2)3- (wherein Ph means phenyl), or [ka] [In the formula, R 42 are each independently a hydrogen atom, C1-6 or C 1-6 represents an alkoxy group, preferably a methyl group or a methoxy group, more preferably a methyl group.] and some of the other Ts are Rs in the molecular backbone. Si and if present, the remaining Ts are each independently a methyl group, a phenyl group, or a C 1-6 It is an alkoxy group, a radical scavenger group, or an ultraviolet absorbing group.

[0274] The radical scavenging group is not particularly limited as long as it can capture radicals generated by light irradiation, and examples thereof include residues of benzophenones, benzotriazoles, benzoic acid esters, phenyl salicylates, crotonic acids, malonic acid esters, organoacrylates, hindered amines, hindered phenols, and triazines.

[0275] The ultraviolet absorbing group is not particularly limited as long as it can absorb ultraviolet light, and examples thereof include residues of benzotriazoles, hydroxybenzophenones, esters of substituted and unsubstituted benzoic acid or salicylic acid compounds, acrylates or alkoxycinnamates, oxamides, oxanilides, benzoxazinones, and benzoxazoles.

[0276] In a preferred embodiment, preferred radical scavenging groups or ultraviolet absorbing groups include: [ka] Examples include:

[0277] In this embodiment, X A may each independently be a trivalent to decavalent group.

[0278] In yet another embodiment, X A Examples of include the following groups: [ka] [In the formula, R 25 , R26 and R 27 are each independently a divalent to hexavalent organic group, R 25 is at least one R FA1 or R FA2 Binds to R 26 and R 27 Each has at least one R Si Binds to.]

[0279] In one embodiment, R 25 is a single bond, C 1-20 Alkylene group, C 3-20 Cycloalkylene group, C 5-20 Arylene group, -R 57 -X 58 -R 59 -, -X 58 -R 59 - or -R 57 -X 58 -. Above, R 57 and R 59 are each independently a single bond, C 1-20 Alkylene group, C 3-20 cycloalkylene group, or C 5-20 The above X is an arylene group. 58 is —O—, —S—, —CO—, —O—CO— or —COO—.

[0280] In one embodiment, R 26 and R 27 are each independently a hydrocarbon or a group having at least one atom selected from N, O and S at the end or in the main chain of the hydrocarbon, and preferably C 1-6 Alkyl group, -R 36 -R 37 -R 36 -, -R 36 -CHR 38 2-, etc. Here, R 36 are each independently a single bond or an alkyl group having 1 to 6 carbon atoms, preferably an alkyl group having 1 to 6 carbon atoms. 37 is N, O or S, preferably N or O. 38 -R 45 -R46 -R 45 -, -R 46 -R 45 -or-R 45 -R 46 -. Here, R 45 are each independently an alkyl group having 1 to 6 carbon atoms. 46 is N, O or S, preferably O.

[0281] In this embodiment, X A may each independently be a trivalent to decavalent group.

[0282] In yet another embodiment, X A is as follows: [ka] [In the formula, X a is a single bond or a divalent organic group. It is a group represented by the following formula:

[0283] Above X a is a single bond or a divalent linking group directly bonded to the isocyanuric ring. a is preferably a single bond, an alkylene group, or a divalent group containing at least one bond selected from the group consisting of an ether bond, an ester bond, an amide bond, and a sulfide bond, and more preferably a single bond, an alkylene group having 1 to 10 carbon atoms, or a divalent hydrocarbon group having 1 to 10 carbon atoms and containing at least one bond selected from the group consisting of an ether bond, an ester bond, an amide bond, and a sulfide bond.

[0284] X a The formula is as follows: -(CX 121 X 122 ) x1 -(X a1 ) y1 -(CX 123 X 124 ) z1 - (In the formula, X 121 ~X 124are each independently H, F, OH, or -OSi(OR 121 ) 3 (wherein three R 121 are each independently an alkyl group having 1 to 4 carbon atoms, Above X a1 is -C(=O)NH-, -NHC(=O)-, -O-, -C(=O)O-, -OC(=O)-, -OC(=O)O-, or -NHC(=O)NH- (the left side of each bond is CX 121 X 122 ), x1 is an integer of 0 to 10, y1 is 0 or 1, and z1 is an integer of 1 to 10. A group represented by the following formula is more preferred.

[0285] Above X a1 is preferably —O— or —C(═O)O—.

[0286] Above X a The formula is as follows: -(CF2) m11 -(CH2) m12 -O-(CH2) m13 - (In the formula, m11 is an integer of 1 to 3, m12 is an integer of 1 to 3, and m13 is an integer of 1 to 3.) a group represented by -(CF2) m14 -(CH2) m15 -O-CH2CH(OH)-(CH2) m16 - (In the formula, m14 is an integer of 1 to 3, m15 is an integer of 1 to 3, and m16 is an integer of 1 to 3.) a group represented by -(CF2) m17 -(CH2) m18 - (In the formula, m17 is an integer of 1 to 3, and m18 is an integer of 1 to 3.) a group represented by -(CF2) m19 -(CH2) m20 -O-CH2CH(OSi(OCH3)3)-(CH2) m21 - (In the formula, m19 is an integer of 1 to 3, m20 is an integer of 1 to 3, and m21 is an integer of 1 to 3.) or a group represented by -(CH2) m22 - (In the formula, m22 is an integer of 1 to 3.) A group represented by the following formula is particularly preferred.

[0287] Above X a Although not particularly limited, specific examples include: -CH2-, -C2H4-, -C3H6-, -C4H8-, -C4H8-O-CH2-, -CO-O-CH2-CH(OH)-CH2-, -(CF2) n5 -(n5 is an integer from 0 to 4), -(CF2) n5 -(CH2) m5 -(n5 and m5 each independently represent an integer of 0 to 4), -CF2CF2CH2OCH2CH(OH)CH2-, -CF2CF2CH2OCH2CH(OSi(OCH3)3)CH2- etc.

[0288] In this embodiment, X A may each independently be a divalent or trivalent group.

[0289] In one embodiment, the fluoropolyether group-containing silane compound represented by formula (A1) or formula (A2) does not contain a siloxane bond (—Si—O—Si—).

[0290] The fluoropolyether group-containing silane compound represented by formula (A1) or formula (A2) is not particularly limited, but may be 5×10 2 ~1×10 5 Within this range, it is preferable that the number average molecular weight is 2,000 to 32,000, more preferably 2,500 to 12,000, from the viewpoint of friction durability. The number average molecular weight of the fluoropolyether group-containing silane compound is 19 The value is measured by F-NMR.

[0291] In one embodiment, the number average molecular weight of the fluoropolyether group-containing silane compound represented by formula (A1) or formula (A2) can be 500 to 30,000, preferably 1,000 to 20,000, more preferably 2,000 to 15,000, even more preferably 2,000 to 10,000, for example, 3,000 to 6,000.

[0292] In another embodiment, the number average molecular weight of the fluoropolyether group-containing silane compound represented by formula (A1) or formula (A2) can be 4,000 to 30,000, preferably 5,000 to 10,000, and more preferably 6,000 to 10,000.

[0293] In one embodiment, the fluoropolyether group-containing silane compound in the surface treatment agent of the present disclosure is a compound represented by formula (A1).

[0294] In another embodiment, the fluoropolyether group-containing silane compound in the surface treatment agent of the present disclosure is a compound represented by formula (A2).

[0295] In another embodiment, the fluoropolyether group-containing silane compound in the surface treatment agent of the present disclosure is a compound represented by formula (A1) and a compound represented by formula (A2).

[0296] In another embodiment, in the surface treatment agent of the present disclosure, the compound represented by formula (A1) and the compound represented by formula (A2) may be partially condensed with each other or with each other. That is, the compounds represented by formula (A1) may be partially condensed with each other, the compounds represented by formula (A2) may be partially condensed with each other, or the compounds represented by formula (A1) and formula (A2) may be partially condensed with each other. Therefore, the surface treatment agent of the present disclosure may contain a partial condensate of the compound represented by formula (A1), a partial condensate of the compound represented by formula (A2), or a partial condensate of the compound represented by formula (A1) and the compound represented by formula (A2).

[0297] In the surface treatment agent of the present disclosure, the content of the compound represented by formula (A2) relative to the total of the compound represented by formula (A1) and the compound represented by formula (A2) is preferably 0.1 mol% or more and 35 mol% or less. The lower limit of the content of the compound represented by formula (A2) relative to the total of the compound represented by formula (A1) and the compound represented by formula (A2) is preferably 0.1 mol%, more preferably 0.2 mol%, even more preferably 0.5 mol%, even more preferably 1 mol%, particularly preferably 2 mol%, and especially 5 mol%. The upper limit of the content of the compound represented by formula (A2) relative to the total of the compound represented by formula (A1) and the compound represented by formula (A2) is preferably 35 mol%, more preferably 30 mol%, even more preferably 20 mol%, even more preferably 15 mol% or 10 mol%. The content of the compound represented by formula (A2) relative to the total of the compound represented by formula (A1) and the compound represented by formula (A2) is preferably 0.1 mol% or more and 30 mol% or less, more preferably 0.1 mol% or more and 20 mol% or less, even more preferably 0.2 mol% or more and 10 mol% or less, still more preferably 0.5 mol% or more and 10 mol% or less, particularly preferably 1 mol% or more and 10 mol% or less, for example, 2 mol% or more and 10 mol% or less, or 5 mol% or more and 10 mol% or less. By setting the content of the compound represented by formula (A2) in this range, the friction durability can be further improved.

[0298] The compound represented by the above formula (A1) or (A2) can be obtained, for example, by the methods described in Patent Document 1, International Publication No. 2006 / 10708, JP-A No. 2019-183160, etc.

[0299] (Fluoropolyether group-containing polyoxyalkylene compound) The fluoropolyether group-containing polyoxyalkylene compound is a compound containing a polyoxyalkylene group and a fluoropolyether group.

[0300] The surface treatment agent of the present disclosure further improves friction durability by containing the fluoropolyether group-containing polyoxyalkylene compound as component (B) in addition to the fluoropolyether group-containing silane compound as component (A).

[0301] In one embodiment, the fluoropolyether group-containing polyoxyalkylene compound has the formula (B1) or (B2): [ka] [In formula: R FB1 is Rf 1 -R F -O q - and R FB2 is -Rf 2 p -R F -O q - and R F are each independently a divalent fluoropolyether group, Rf 1 C optionally substituted with one or more fluorine atoms 1-16 is an alkyl group, Rf 2 C optionally substituted with one or more fluorine atoms 1-6 is an alkylene group, p is 0 or 1; Each q is independently 0 or 1; X B are each independently a single bond or a divalent group, R B are each independently an oxyalkylene-containing group .] It is a compound represented by the formula:

[0302] In formula (B1), R FB1 is Rf 1 -R F -O q -It is.

[0303] In formula (B2), R FB2 is -Rf 2 p -R F -O q -It is.

[0304] R in formulas (B1) and (B2) FB1 and R FB2 are R in formulas (A1) and (A2), respectively. FA1 and R FA2 Rf in formulas (B1) and (B2) corresponds to 1 -R F -O q - and - Rf 2 p -R F -O q - is Rf in formulas (A1) and (A2). 1 -R F -O q - and - Rf 2 p -R F -O q - and may have the same meaning as -. In the surface treatment agent, R FB1 and R FA1 , and R FA2 and R FB2 may be the same or different.

[0305] In formulas (B1) and (B2), X B are each independently a single bond or a divalent group. B is R on the left FB1 or R FB2 Combine with.

[0306] The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO, or a divalent organic group, more preferably an oxygen atom or a divalent organic group, more preferably a divalent organic group.

[0307] In one embodiment, X B are each independently a single bond or -(R 67 ) b1 -(R 68 )b2 - [In formula: R 67 are each independently 1-6 is an alkylene group, R 68 are each independently an oxygen atom, a sulfur atom, CO, or NR 69 ,CONR 69 , N.R. 69 CO or C 6-12 is an arylene group, R 69 are each independently a hydrogen atom or C 1-6 is an alkyl group, b1 is an integer from 0 to 6, b2 is an integer from 0 to 6, the sum of b1 and b2 is 1 or greater, The repeating units enclosed in parentheses with b1 or b2 may be present in any order in the formula.] It is a group represented by the following formula:

[0308] X B are each independently preferably a single bond, C 1-6 an alkylene group or -R 64 -OR 65 -R 64 is a single bond or C 1-6 is an alkylene group; R 65 is a single bond or C 1-6 It is an alkylene group.

[0309] In one embodiment, X B are each independently a single bond or C 1-6 It is an alkylene group.

[0310] In another embodiment, X B are each independently a single bond.

[0311] In another embodiment, X B are each independently 1-6 It is an alkylene group.

[0312] Above X B are each independently a fluorine atom, C 1-3 Alkyl groups and C 1-3 Fluoroalkyl groups (preferably C 1-3 In one embodiment, X may be substituted with one or more substituents selected from the group consisting of fluoroalkyl groups, perfluoroalkyl groups, and the like. B is non-substituted.

[0313] In formulas (B1) and (B2), R B are each independently an oxyalkylene-containing group.

[0314] The oxyalkylene-containing group means a group containing an oxyalkylene group (-O-alkylene group).

[0315] The oxyalkylene-containing group preferably has the formula: -R 61 -(OR 63 ) b3 -R 62 , or -X E (-R 61 -(OR 63 ) b3 -R 62 ) r2 [In formula: R 61 are each independently a single bond or C 1-6 is an alkylene group, R 62 are each independently a hydrogen atom, C 1-6 Alkyl group or C 1-6 is an alkoxy group, R 63 are each independently 1-6 is an alkylene group, b3 each independently represents an integer of 1 to 6, X E is a trivalent to decavalent group, r2 is an integer from 2 to 9, and X E is one less than the valence of .] It is a group represented by the following formula:

[0316] In a preferred embodiment, the oxyalkylene-containing group is -R 61 -(OR 63 ) b3 -R 62 is.

[0317] In another embodiment, the oxyalkylene-containing group is -X E (-R 61 -(OR 63 ) b3 -R 62 ) r2 is.

[0318] In the above formula, R 61 is a single bond or C 1-6 It is an alkylene group.

[0319] In one embodiment, R 61 is a single bond.

[0320] In another embodiment, R 61 is C 1-6 It is an alkylene group.

[0321] Above R 61 C in 1-6 The alkylene group may be straight or branched. 61 C in 1-6 The alkylene group is linear. 61 C in 1-6 The alkylene group is branched.

[0322] Above R 61 C in 1-6 The alkylene group is preferably C 1-4 Alkylene groups, more preferably C 1-3 It is an alkylene group.

[0323] In the above formula, R 62 are each independently a hydrogen atom, C 1-6 Alkyl group or C 1-6 It is an alkoxy group.

[0324] In one embodiment, R 62 is a hydrogen atom.

[0325] In another embodiment, R 62 is C 1-6 It is an alkyl group.

[0326] In another embodiment, R 62 is C 1-6 It is an alkoxy group.

[0327] Above R 62 C in 1-6 The alkyl group may be straight or branched. 62 C in 1-6 The alkyl group is linear. In another embodiment, R 62 C in 1-6 The alkyl group is branched.

[0328] Above R 62 C in 1-6 The alkyl group is preferably C 1-4 Alkyl groups, more preferably C 1-3 It is an alkyl group.

[0329] Above R 62 C in 1-6 The alkoxy group may be straight or branched. 62 C in 1-6 The alkoxy group is linear. 62 C in 1-6 The alkoxy group is branched.

[0330] Above R 62 C in 1-6 The alkoxy group is preferably C 1-4 Alkoxy groups, more preferably C 1-3 It is an alkoxy group.

[0331] In the above formula, R 63are each independently 1-6 It is an alkylene group.

[0332] R 63 C in 1-6 The alkylene group may be straight or branched. 63 C in 1-6 The alkylene group is linear. 63 C in 1-6 The alkylene group is branched.

[0333] Above C 1-6 The alkylene group is preferably C 1-3 Alkylene groups, more preferably C 2-3 It is an alkylene group.

[0334] b3 may be an integer of 1 to 6, preferably an integer of 1 to 4, for example, an integer of 1 to 3, 1 to 2, or 2 to 4.

[0335] In the above formula, X E is a trivalent to decavalent group, preferably a trivalent to hexavalent group.

[0336] The trivalent to decavalent group may be preferably a trivalent to decavalent hydrocarbon group, more preferably a trivalent to hexavalent hydrocarbon group.

[0337] X E is preferably a trivalent group such as CH, CH2CHCH2, or CH3CH2C(CH2)3, a tetravalent group such as C(CH2)4, or a hexavalent group such as CH2[CH]4CH2.

[0338] In the above formula, r2 is X E and is an integer of 2 to 9, preferably an integer of 2 to 6, for example, 3 or 4.

[0339] The number average molecular weight of the fluoropolyether group-containing polyoxyalkylene compound represented by formula (B1) or (B2) is not particularly limited, but is preferably 5×10 2 ~1×105 Within this range, it is preferable that the number average molecular weight is 1,000 to 20,000, more preferably 2,000 to 10,000, from the viewpoint of friction durability. The number average molecular weight of the fluoropolyether group-containing oxypolyoxyalkylene compound is 19 The value is measured by F-NMR.

[0340] The fluoropolyether group-containing polyoxyalkylene compounds represented by the above formulas (B1) and (B2) can be synthesized, for example, as follows.

[0341] The following formula (1a) or (2a): R FB1 -X B -OH (1a) HOOC-X B -R FB2 -X B -OH (2a) [In the formula, each symbol has the same meaning as above.] and reacting a compound represented by the following formula: R H R B [In formula: R H is a halogen atom, preferably a bromine atom, R B has the same meaning as above.] It can be obtained by reacting with

[0342] Examples of the base include sodium hydroxide and sodium hydride.

[0343] In one embodiment, the fluoropolyether group-containing polyoxyalkylene compound in the surface treatment agent of the present disclosure is a compound represented by formula (B1).

[0344] In another embodiment, in the surface treatment agent of the present disclosure, the fluoropolyether group-containing polyoxyalkylene compound is a compound represented by formula (B2).

[0345] In another embodiment, in the surface treatment agent of the present disclosure, the fluoropolyether group-containing polyoxyalkylene compound is a compound represented by formula (B1) and a compound represented by formula (B2).

[0346] In another embodiment, in the surface treatment agent of the present disclosure, the compound represented by formula (B1) and the compound represented by formula (B2) may be partially condensed with each other or with each other. That is, the compounds represented by formula (B1) may be partially condensed with each other, the compounds represented by formula (B2) may be partially condensed with each other, or the compounds represented by formula (B1) and formula (B2) may be partially condensed with each other. Therefore, the surface treatment agent of the present disclosure may contain a partial condensate of the compound represented by formula (B1), a partial condensate of the compound represented by formula (B2), or a partial condensate of the compound represented by formula (B1) and the compound represented by formula (B2).

[0347] The content of component (B) is preferably 1% by mass or more, more preferably 5% by mass or more, and even more preferably 10% by mass or more, based on the total of components (A) and (B). The content of component (B) is preferably 70% by mass or less, more preferably 60% by mass or less, even more preferably 35% by mass or less, even more preferably 25% by mass or less, and particularly preferably 20% by mass or less, based on the total of components (A) and (B). By incorporating component (B) in the above amount, a surface treatment layer with excellent friction durability can be obtained.

[0348] In one embodiment, the content of component (B) is preferably 1 to 70 mass %, more preferably 1 to 40 mass %, and even more preferably 5 to 40 mass %, based on the total of components (A) and (B).

[0349] The total concentration of component (A) and component (B) in the surface treatment agent is preferably 0.1 to 99.9 mass%, more preferably 1.0 to 50 mass%, even more preferably 5.0 to 30 mass%, and even more preferably 5.0 to 15 mass%.

[0350] In the surface treatment agent of the present disclosure, component (A) and component (B) may be present in a partially condensed state, i.e., the surface treatment agent of the present disclosure may contain a partial condensate of component (A) and component (B).

[0351] (Other ingredients) The surface treatment agent according to the present disclosure may contain a solvent, an alcohol, a (non-reactive) fluoropolyether compound that can be understood as a fluorine-containing oil, preferably a perfluoropolyether compound (hereinafter collectively referred to as a "fluorine-containing oil"), a (non-reactive) silicone compound that can be understood as a silicone oil (hereinafter referred to as a "silicone oil"), a compatibilizer, a catalyst, a surfactant, a polymerization inhibitor, a sensitizer, and the like.

[0352] Examples of the solvent include aliphatic hydrocarbons such as hexane, cyclohexane, heptane, octane, nonane, decane, undecane, dodecane, and mineral spirits; aromatic hydrocarbons such as benzene, toluene, xylene, naphthalene, and solvent naphtha; methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, isopropyl acetate, isobutyl acetate, cellosolve acetate, propylene glycol methyl ether acetate, carbitol acetate, diethyl oxalate, ethyl pyruvate, and ethyl 2-hydroxybutyrate. Esters such as ethyl acetoacetate, amyl acetate, methyl lactate, ethyl lactate, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 2-hydroxyisobutyrate, ethyl 2-hydroxyisobutyrate; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, 2-hexanone, cyclohexanone, methyl amino ketone, 2-heptanone; ethyl cellosolve, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether ... Glycol ethers such as ethylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether acetate, dipropylene glycol dimethyl ether, and ethylene glycol monoalkyl ether; alcohols such as methanol, ethanol, isopropanol, n-butanol, isobutanol, tert-butanol, sec-butanol, 3-pentanol, octyl alcohol, 3-methyl-3-methoxybutanol, and tert-amyl alcohol; glycols such as ethylene glycol and propylene glycol; cyclic ethers such as tetrahydrofuran, tetrahydropyran, and dioxane; amides such as N,N-dimethylformamide and N,N-dimethylacetamide; ether alcohols such as methyl cellosolve, cellosolve, isopropyl cellosolve, butyl cellosolve, and diethylene glycol monomethyl ether; and diethylene glycol monoethyl ether acetate.1,1,2-trichloro-1,2,2-trifluoroethane, 1,2-dichloro-1,1,2,2-tetrafluoroethane, dimethyl sulfoxide, 1,1-dichloro-1,2,2,3,3-pentafluoropropane (HCFC225), 1,1,2,2,3,3,4-heptafluorocyclopentane (e.g., Zeorora H), perfluorobutyl methyl ether (C4F9OCH3) (e.g., HFE7100), perfluoro Fluorine-containing solvents such as perfluorobutyl ethyl ether (C4F9OC2H5) (e.g., HFE7200), perfluorohexyl methyl ether (C2F5CF(OCH3)C3F7) (e.g., HFE7300), CF3CH2OH, CF3CF2CH2OH, (CF3)2CHOH, 1,1,2,3,3,3-hexafluoropropyl methyl ether (CF3CFHCF2OCH3) (HFE-356mec), etc. Alternatively, mixed solvents of two or more of these solvents may be used.

[0353] Examples of the alcohols include alcohols having 1 to 6 carbon atoms which may be substituted with one or more fluorine atoms, such as methanol, ethanol, isopropanol, tert-butanol, CF3CH2OH, CF3CF2CH2OH, (CF3)2CHOH, H(CF2CF2)CH2OH, H(CF2CF2)2CH2OH, and H(CF2CF2)3CH2OH. Addition of these alcohols to the surface treatment agent improves the stability of the surface treatment agent and also improves the compatibility of component (A) and component (B) with the solvent.

[0354] In a preferred embodiment, the surface treatment agent of the present disclosure comprises a solvent and an alcohol.

[0355] The content of the alcohol is preferably 0.1 to 50 mass %, more preferably 0.5 to 30 mass %, even more preferably 1.0 to 20 mass %, and still more preferably 2.0 to 10 mass %, based on the total of the solvent and the alcohol.

[0356] The fluorine-containing oil is not particularly limited, but examples thereof include compounds represented by the following general formula (3) (perfluoropolyether compounds). Rf 5 -(OC4F8) a’ -(OC3F6) b’ -(OC2F4) c’ -(OCF2) d’ -Rf 6 ···(3) In the formula, Rf 5 is an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms (preferably, C 1―16 Rf represents a perfluoroalkyl group 6 is an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms (preferably, C 1-16 perfluoroalkyl group), a fluorine atom or a hydrogen atom, and Rf 5 and Rf 6 More preferably, each independently represents C 1-3 It is a perfluoroalkyl group. a', b', c', and d' respectively represent the number of four types of repeating units of the perfluoropolyether constituting the main skeleton of the polymer, and are each independently an integer of 0 to 300, and the sum of a', b', c', and d' is at least 1, preferably 1 to 300, and more preferably 20 to 300. The order of occurrence of each repeating unit enclosed in parentheses with the subscript a', b', c', or d' is arbitrary in the formula. Of these repeating units, -(OC4F8)- may be any of -(OCF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2)-, -(OCF2CF(CF3)CF2)-, -(OCF2CF2CF(CF3))-, -(OCF2CF2CF(CF3))-, -(OC(CF3)2CF2)-, -(OCF2C(CF3)2)-, -(OCF(CF3)CF(CF3))-, -(OCF(C2F5)CF2)-, and (OCF2CF(C2F5))-, but is preferably -(OCF2CF2CF2CF2)-. -(OC3F6)- may be any of -(OCF2CF2CF2)-, -(OCF(CF3)CF2)-, and (OCF2CF(CF3))-, but is preferably -(OCF2CF2CF2)-. -(OC2F4)- may be either -(OCF2CF2)- or (OCF(CF3))-, but is preferably -(OCF2CF2)-.

[0357] Examples of the perfluoropolyether compound represented by the above general formula (3) include compounds represented by either of the following general formulas (3a) and (3b) (which may be one type or a mixture of two or more types): Rf 5 -(OCF2CF2CF2) b” -Rf 6 (3a) Rf 5 -(OCF2CF2CF2CF2) a” -(OCF2CF2CF2) b” -(OCF2CF2) c” -(OCF2) d” -Rf 6 (3b) In these formulas, Rf 5 and Rf 6is as defined above; in formula (3a), b" is an integer of 1 or more and 100 or less; in formula (3b), a" and b" are each independently an integer of 0 or more and 30 or less, and c" and d" are each independently an integer of 1 or more and 300 or less. The order of occurrence of each repeating unit enclosed in parentheses with the subscripts a", b", c", and d" is arbitrary in the formula.

[0358] From another perspective, fluorine-containing oils are those represented by the general formula Rf 3 -F(where Rf 3 is C 5-16 It may be a compound represented by the formula: wherein R is a perfluoroalkyl group.) It may also be a chlorotrifluoroethylene oligomer.

[0359] The fluorine-containing oil may have an average molecular weight of 500 to 10000. The molecular weight of the fluorine-containing oil can be measured using GPC.

[0360] The fluorinated oil may be contained in an amount of, for example, 0 to 50% by mass, preferably 0 to 30% by mass, and more preferably 0 to 5% by mass, relative to the surface treatment agent of the present disclosure. In one embodiment, the surface treatment agent of the present disclosure is substantially free of fluorinated oil. "Substantially free of fluorinated oil" means that the surface treatment agent does not contain any fluorinated oil, or may contain a very small amount of fluorinated oil.

[0361] In one embodiment, the average molecular weight of the fluorinated oil may be greater than the average molecular weight of the fluoropolyether group-containing silane compound, which can provide better friction durability and surface slipperiness, particularly when the surface treatment layer is formed by vacuum deposition.

[0362] In one embodiment, the average molecular weight of the fluorinated oil may be smaller than that of the fluoropolyether group-containing silane compound. By setting the average molecular weight in this range, it is possible to form a cured product having high friction durability and high surface slippage while suppressing a decrease in the transparency of the surface treatment layer obtained from such a compound.

[0363] The fluorine-containing oil contributes to improving the surface slip properties of the layer formed by the surface treatment agent of the present disclosure.

[0364] As the silicone oil, for example, a linear or cyclic silicone oil having 2,000 or less siloxane bonds can be used. The linear silicone oil may be a so-called straight silicone oil or a modified silicone oil. Examples of straight silicone oils include dimethyl silicone oil, methylphenyl silicone oil, and methylhydrogen silicone oil. Examples of modified silicone oils include straight silicone oils modified with alkyl, aralkyl, polyether, higher fatty acid ester, fluoroalkyl, amino, epoxy, carboxyl, alcohol, etc. Examples of cyclic silicone oils include cyclic dimethylsiloxane oil.

[0365] In the surface treatment agent of the present disclosure, such silicone oil may be contained in an amount of, for example, 0 to 300 parts by mass, preferably 50 to 200 parts by mass, relative to a total of 100 parts by mass of the fluoropolyether group-containing silane compounds of the present disclosure (the total of these if two or more types are used, the same applies below).

[0366] The silicone oil contributes to improving the surface slipperiness of the surface treatment layer.

[0367] Examples of the compatibilizer include fluorine-substituted alcohols such as 2,2,2-trifluoroethanol, 2,2,3,3,3-pentafluoro-1-propanol, and 2,2,3,3,4,4,5,5-octafluoro-1-pentanol, preferably fluorine-substituted alcohols having a CF2H terminal; fluorine-substituted aryls such as 1,3-bis(trifluoromethyl)benzene, preferably fluorine-substituted benzene; and the like.

[0368] Examples of the catalyst include acids (for example, acetic acid, trifluoroacetic acid, etc.), bases (for example, ammonia, triethylamine, diethylamine, etc.), and transition metals (for example, Ti, Ni, Sn, etc.).

[0369] The catalyst promotes the hydrolysis and dehydration condensation of the fluoropolyether group-containing silane compound of the present disclosure, and promotes the formation of the layer formed by the surface treatment agent of the present disclosure.

[0370] In addition to the above, other components include, for example, tetraethoxysilane, methyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and methyltriacetoxysilane.

[0371] The surface treatment agent of the present disclosure can be impregnated into a porous substance, such as a porous ceramic material or a metal fiber, such as a flocculated steel wool, to form pellets, which can be used for vacuum deposition, for example.

[0372] In addition to the components described above, the surface treatment agent of the present disclosure may contain trace amounts of impurities such as Pt, Rh, Ru, 1,3-divinyltetramethyldisiloxane, triphenylphosphine, NaCl, KCl, and silane condensates.

[0373] (Goods) The articles of the present disclosure are described below.

[0374] The article of the present disclosure includes a substrate and a layer (surface treatment layer) formed on the surface of the substrate from the surface treatment agent of the present disclosure.

[0375] Substrates that can be used in the present disclosure may be made of any suitable material, such as glass, resin (which may be a natural or synthetic resin, for example, a common plastic material), metal, ceramics, semiconductors (silicon, germanium, etc.), fibers (woven fabrics, nonwoven fabrics, etc.), fur, leather, wood, ceramics, stone, etc., building materials, etc., sanitary products, etc.

[0376] For example, if the article to be manufactured is an optical component, the material constituting the surface of the substrate may be a material for optical components, such as glass or transparent plastic. Furthermore, if the article to be manufactured is an optical component, some layer (or film), such as a hard coat layer or an antireflection layer, may be formed on the surface (outermost layer) of the substrate. The antireflection layer may be either a single-layer antireflection layer or a multilayer antireflection layer. Examples of inorganic materials that can be used for the antireflection layer include SiO2, SiO, ZrO2, TiO2, TiO, Ti2O3, Ti2O5, Al2O3, Ta2O5, Ta3O5, Nb2O5, HfO2, Si3N4, CeO2, MgO, YO3, SnO2, MgF2, and WO3. These inorganic materials may be used alone or in combination (e.g., as a mixture) of two or more of them. When a multilayer antireflection layer is used, it is preferable to use SiO2 and / or SiO for the outermost layer. When the product to be manufactured is an optical glass component for a touch panel, a transparent electrode, such as a thin film using indium tin oxide (ITO) or indium zinc oxide, may be provided on a portion of the surface of the substrate (glass). Furthermore, the substrate may have an insulating layer, an adhesive layer, a protective layer, a decorative frame layer (I-CON), an atomizing film layer, a hard coating film layer, a polarizing film, a phase difference film, a liquid crystal display module, etc., depending on the specific specifications.

[0377] The shape of the substrate is not particularly limited and may be, for example, a plate, a film, or other form. The surface region of the substrate on which the surface treatment layer is to be formed may be at least a part of the substrate surface, and may be appropriately determined depending on the use and specific specifications of the product to be manufactured.

[0378] In one embodiment, at least the surface portion of such a substrate may be made of a material that originally contains hydroxyl groups. Examples of such materials include glass, metals (especially base metals), ceramics, semiconductors, and the like, on whose surfaces native oxide or thermal oxide films form. Alternatively, for materials such as resins, which do not have sufficient hydroxyl groups or do not originally contain hydroxyl groups, some pretreatment can be performed on the substrate to introduce or increase the number of hydroxyl groups on the surface. Examples of such pretreatments include plasma treatment (e.g., corona discharge) and ion beam irradiation. Plasma treatment can introduce or increase hydroxyl groups on the substrate surface and can also be used to clean the substrate surface (remove foreign matter, etc.). Another example of such pretreatment is a method in which an interfacial adsorbent having carbon-carbon unsaturated bond groups is first formed in the form of a monomolecular film on the substrate surface by the Langmuir-Blodgett method (LB method) or chemical adsorption, followed by cleavage of the unsaturated bonds in an atmosphere containing oxygen, nitrogen, or the like.

[0379] In another embodiment, the substrate may have at least a surface portion made of a material containing another reactive group, such as a silicone compound having one or more Si—H groups, or an alkoxysilane.

[0380] In a preferred embodiment, the substrate is glass, such as sapphire glass, soda-lime glass, alkali aluminosilicate glass, borosilicate glass, alkali-free glass, crystal glass, or quartz glass, with chemically strengthened soda-lime glass, chemically strengthened alkali aluminosilicate glass, and chemically bonded borosilicate glass being particularly preferred.

[0381] The article of the present disclosure can be produced by forming a layer of the surface treatment agent of the present disclosure on the surface of the substrate, and then post-treating this layer as necessary, thereby forming a layer from the surface treatment agent of the present disclosure.

[0382] The layer formation of the surface treatment agent of the present disclosure can be carried out by applying the surface treatment agent to the surface of a substrate so as to coat the surface. The coating method is not particularly limited. For example, a wet coating method or a dry coating method can be used.

[0383] Examples of wet coating methods include dip coating, spin coating, flow coating, spray coating, roll coating, gravure coating, and similar methods.

[0384] Examples of dry coating methods include vapor deposition (usually vacuum deposition), sputtering, CVD, and similar methods. Specific examples of vapor deposition methods (usually vacuum deposition) include resistance heating, electron beam, high frequency heating using microwaves, ion beam, and similar methods. Specific examples of CVD methods include plasma-CVD, optical CVD, thermal CVD, and similar methods.

[0385] Furthermore, coating by atmospheric pressure plasma method is also possible.

[0386] When using the wet coating method, the surface treatment agent of the present disclosure may be diluted with a solvent and then applied to the substrate surface. From the viewpoint of the stability of the composition of the present disclosure and the volatility of the solvent, the following solvents are preferably used: perfluoroaliphatic hydrocarbons having 5 to 12 carbon atoms (e.g., perfluorohexane, perfluoromethylcyclohexane, and perfluoro-1,3-dimethylcyclohexane); polyfluoroaromatic hydrocarbons (e.g., bis(trifluoromethyl)benzene); polyfluoroaliphatic hydrocarbons (e.g., CF 13CH2CH3 (e.g., Asahiklin (registered trademark) AC-6000 manufactured by Asahi Glass Co., Ltd.), 1,1,2,2,3,3,4-heptafluorocyclopentane (e.g., Zeorora (registered trademark) H manufactured by Zeon Corporation); hydrofluoroethers (HFEs) (e.g., perfluoropropyl methyl ether (C3F7OCH3) (e.g., Novec (trademark) 7000 manufactured by Sumitomo 3M Limited), perfluorobutyl methyl ether (C4F9OCH3) (e.g., Novec (trademark) 7100 manufactured by Sumitomo 3M Limited), Alkyl perfluoroalkyl ethers (the perfluoroalkyl group and alkyl group may be linear or branched) such as perfluorobutyl ethyl ether (C4F9OC2H5) (e.g., Novec™ 7200 manufactured by Sumitomo 3M Limited) and perfluorohexyl methyl ether (C2F5CF(OCH3)C3F7) (e.g., Novec™ 7300 manufactured by Sumitomo 3M Limited), or CF3CH2OCF2CHF2 (e.g., Asahiklin™ AE-3000 manufactured by Asahi Glass Co., Ltd.). These solvents can be used alone or as a mixture of two or more. Among them, hydrofluoroethers are preferred, with perfluorobutyl methyl ether (C4F9OCH3) and / or perfluorobutyl ethyl ether (C4F9OC2H5) being particularly preferred.

[0387] When the dry coating method is used, the surface treatment agent of the present disclosure may be subjected to the dry coating method as it is, or may be subjected to the dry coating method after being diluted with the above-mentioned solvent.

[0388] The layer formation of the surface treatment agent is preferably carried out so that the surface treatment agent of the present disclosure is present in the layer together with a catalyst for hydrolysis and dehydration condensation. Conveniently, in the case of a wet coating method, the surface treatment agent of the present disclosure may be diluted with a solvent, and then a catalyst may be added to the diluted solution of the surface treatment agent of the present disclosure immediately before application to the substrate surface. In the case of a dry coating method, the surface treatment agent of the present disclosure to which the catalyst has been added may be directly subjected to vapor deposition (usually vacuum deposition), or a pellet-shaped material impregnated with the surface treatment agent of the present disclosure to which the catalyst has been added may be subjected to vapor deposition (usually vacuum deposition) on a porous metal such as iron or copper.

[0389] Any suitable acid or base can be used as the catalyst. Examples of acid catalysts that can be used include acetic acid, formic acid, and trifluoroacetic acid. Examples of base catalysts that can be used include ammonia and organic amines.

[0390] The surface treatment layer included in the article of the present disclosure has both high friction durability and water repellency, oil repellency, antifouling properties (for example, preventing adhesion of stains such as fingerprints), waterproof properties (for example, preventing water penetration into electronic components), surface slipperiness (or lubricity, for example, ease of wiping off stains such as fingerprints and excellent tactile feel), chemical resistance, etc., depending on the composition of the surface treatment agent used, and can be suitably used as a functional thin film.

[0391] Therefore, the present disclosure also relates to an optical material having the above-described surface treatment layer as the outermost layer.

[0392] Preferred examples of the optical material include optical materials related to displays and the like, such as those exemplified below, as well as a wide variety of other optical materials: for example, displays such as cathode ray tubes (CRTs; for example, personal computer monitors), liquid crystal displays, plasma displays, organic EL displays, inorganic thin-film EL dot matrix displays, rear projection displays, vacuum fluorescent displays (VFDs), and field emission displays (FEDs), or protective plates for such displays, or displays whose surfaces have been treated with an anti-reflection film.

[0393] The article of the present disclosure may be, but is not limited to, an optical member. Examples of optical members include lenses for eyeglasses, front protective plates for displays such as PDPs and LCDs, anti-reflection plates, polarizing plates, and anti-glare plates, touch panel sheets for devices such as mobile phones and personal digital assistants, disc surfaces for optical discs such as Blu-ray (registered trademark) discs, DVD discs, CD-Rs, and MOs, optical fibers, and display surfaces for watches.

[0394] The article of the present disclosure may also be a medical device or medical material.

[0395] The thickness of the layer is not particularly limited. In the case of optical members, the thickness of the layer is preferably in the range of 1 to 50 nm, 1 to 30 nm, and preferably 1 to 15 nm, from the viewpoints of optical performance, friction durability, and antifouling properties.

[0396] The surface treatment agent and article of the present disclosure have been described in detail above. However, the surface treatment agent and article of the present disclosure are not limited to those exemplified above. [Example]

[0397] The surface treatment agent of the present disclosure will be described below in examples, but the present disclosure is not limited to the following examples. In these examples, the order of the repeating units constituting the fluoropolyether and polyether is arbitrary, and the chemical formula shown below indicates the average composition.

[0398] (Component (A)) As the fluoropolyether group-containing silane compound, the following compounds (a1) and (a2) were prepared.

[0399] ·Compound (a1): m=15, n= 16

[0400] [ka]

[0401] ·Compound (a2): m=21, n=36

[0402] [ka]

[0403] (Component (B)) The following compound (b) was prepared as a fluoropolyether group-containing polyoxyalkylene compound.

[0404] ·Compound (b): m=23.1, n=39.4, number average molecular weight=5620 [ka]

[0405] Synthesis example (b) In a 50 mL three-neck flask equipped with a reflux condenser, thermometer, and stirrer, add HOCH2CF2O(CF2CF2) of average composition 23.1 (CF2O) 39.4 2 g of a perfluoropolyether denatured alcohol represented by CF2CH2OH (note that the mixture also contains trace amounts of compounds containing trace amounts of (CF2CF2CF2O) and / or (CF2CF2CF2CF2O) repeating units), 4 g of 1,3-bis(trifluoromethyl)benzene, and 0.1 g of sodium hydroxide were charged and stirred at 60°C for 2 hours. Next, 0.3 g of 1-bromo-2-(2-methoxyethoxy)ethane was charged and stirred at 60°C for 2 hours. After that, washing with 3N hydrochloric acid was performed three times in a separatory funnel (more specifically, an operation to maintain fluoro-based compounds in the 1,3-bis(trifluoromethyl)benzene phase and separate non-fluoro-based compounds into the hydrochloric acid layer (aqueous)). Subsequently, volatile components were distilled off under reduced pressure to obtain 1.3 g of perfluoropolyether group-containing polyoxyalkylene compound (b). CH3OCH2CH2OCH2CH2-OCH2CF2O(CF2CF2) 20.4 (CF2O) 34.5 CF2CH2O-CH2CH2OCH2CH2OCH3(b)

[0406] Examples 1 to 3 (Preparation of Surface Treatment Agent) The fluoropolyether group-containing silane compound (component A) and the fluoropolyether group-containing polyoxyalkylene compound (component B) shown in Table 1 were mixed in the proportions shown in Table 1. The resulting mixture was diluted with hydrofluoroether (Novec 7200, manufactured by 3M) so that the total concentration of components A and B was 20 mass %, thereby preparing a surface treatment agent.

[0407] Comparative Examples 1-2 A surface treatment agent was prepared in the same manner as in the above example, except that component B was not used.

[0408] [Table 1]

[0409] (Formation of surface treatment layer) The surface treatment agents prepared above (Examples 1 to 3 and Comparative Examples 1 and 2) were vacuum-deposited onto chemically strengthened glass (Corning "Gorilla" glass, thickness 0.7 mm). The vacuum deposition treatment conditions were a pressure of 3.0 × 10 -3 First, a silicon dioxide film was formed on the surface of the chemically strengthened glass, and then 400 mg of a surface treatment agent was vapor-deposited to form a surface treatment layer.

[0410] (Measurement of initial contact angle) For the surface treatment layers obtained from the surface treatment agents of Examples 1 to 3 and Comparative Examples 1 and 2, the static contact angle (degrees) of water was measured at five points, and the average value (degrees) was taken as the initial contact angle (degrees) (number of frictions: 0).

[0411] (Eraser (ER) friction durability test) The substrate with the surface treatment layer formed was placed horizontally, and an eraser (manufactured by Minoan, model number: MB006004, diameter 0.6 cm) was placed in contact with the surface of the surface treatment layer, and a load of 1000 gf was applied thereto. Then, with the load applied, the eraser was moved back and forth at a speed of 20 mm / s to conduct an eraser friction durability test. After every 100 strokes, the static contact angle (degrees) of water was measured at five points, and the average value (degrees) was taken. The test was stopped when the average contact angle (degrees) was less than 100 degrees, and the number of strokes at which the previous contact angle exceeded 100 degrees was used as the eraser friction durability value (times), as shown in the table below.

[0412] [Table 2]

[0413] Steel wool (SW) friction durability evaluation Steel wool friction durability was evaluated for substrates with a surface treatment layer. Specifically, the substrate with the surface treatment layer was placed horizontally, and steel wool (#0000, dimensions 5mm x 10mm x 10mm) was placed in contact with the surface treatment layer of the substrate. A load of 1,000gf was applied, and then the steel wool was moved back and forth at a speed of 140mm / s while the load was applied. The static contact angle (degrees) of water was measured every 1,000 strokes, and the evaluation was stopped when the measured contact angle fell below 100 degrees. The number of strokes at which the contact angle finally exceeded 100 degrees is shown in the table below (in the table, the symbol "-" indicates no measurement). The test was stopped after 20,000 strokes.

[0414] [Table 3]

[0415] From the above results, it was confirmed that the surface treatment agent of the present disclosure containing a fluoropolyether group-containing silane compound and a fluoropolyether group-containing polyoxyalkylene compound can form a surface treatment layer having excellent friction durability. [Industrial Applicability]

[0416] The article of the present disclosure can be suitably used in a wide variety of applications, for example, as an optical component such as a touch panel.

Claims

1. Component (A): a fluoropolyether group-containing silane compound, and Component (B): Fluoropolyether group-containing polyoxyalkylene compound Including, The content of component (B) is 5 to 60 mass% based on the total of components (A) and (B), The component (A): a fluoropolyether group-containing silane compound represented by the following formula (A1) or (A2): 【Chemistry 1】 [In the formula: R ＦＡ１ are each independently Rf １ -R Ｆ -O ｑ - and R ＦＡ２ is -Rf ２ ｐ -R Ｆ -O ｑ - and R Ｆ are each independently a divalent fluoropolyether group, Rf １ is a C optionally substituted by one or more fluorine atoms; １－１６ is an alkyl group, Rf ２ is a C optionally substituted by one or more fluorine atoms; １－６ is an alkylene group, p is 0 or 1; Each q is independently 0 or 1; R Ｓｉ are each independently a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom bonded to a monovalent group, At least one R Ｓｉ is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded, X Ａ are each independently a single bond or the following formula: -(R ５１ ) ｐ５ -(X ５１ ) ｑ５ - [In the formula: R ５１ is a single bond, -(CH ２ ) ｓ５ - or an o-, m- or p-phenylene group, s5 is an integer from 1 to 20, X ５１ is -(X ５２ ) ｌ５ - and X ５２ each independently represents an —O—, —S—, o-, m-, or p-phenylene group, —C(O)O—, —Si(R ５３ ) ２ -, -(Si(R ５３ ) ２ O) ｍ５ -Si(R ５３ ) ２ --, --CONR ５４ --, --O-CONR ５４ -, -NR ５４ - and - (CH ２ ) ｎ５ - is a group selected from the group consisting of R ５３ are each independently a phenyl group, C １－６ Alkyl group or C １－６ is an alkoxy group, R ５４ are each independently a hydrogen atom, a phenyl group, or C １－６ is an alkyl group, m5 each independently represents an integer of 1 to 100; n5 is independently an integer from 1 to 20, l5 is an integer from 1 to 10, p5 is 0 or 1; q5 is 0 or 1; wherein at least one of p5 and q5 is 1, and the repeating units enclosed in parentheses with p5 or q5 may be present in any order; The right side is R Ｓｉ binds to.] or a divalent group represented by X Ａ are each independently represented by the following formula: 【Chemistry 2】 [In the formula, X ａ is a single bond or -(CX １２１ X １２２ ) ｘ１ -(X ａ１ ) ｙ１ -(CX １２３ X １２４ ) ｚ１ - (In the formula, X １２１ ~X １２４ are each independently H, F, OH, or —OSi(OR １２１ ) ３ (wherein three R １２１ are each independently an alkyl group having 1 to 4 carbon atoms; Above X ａ１ is —C(═O)NH—, —NHC(═O)—, —O—, —C(═O)O—, —OC(═O)—, —OC(═O)O—, or —NHC(═O)NH— (the left side of each bond is CX １２１ X １２２ ), x1 is an integer from 0 to 10, y1 is 0 or 1, and z1 is an integer from 1 to 10. is a group represented by the following formula: is a group represented by α1 is 1 or 2, β1 is 1 or 2, Each γ1 is independently 1 or 2. is a compound represented by the formula: The component (B): a fluoropolyether group-containing polyoxyalkylene compound represented by the following formula (B1) or (B2): 【Transformation 3】 [In the formula: R ＦＢ１ is Rf １ -R Ｆ -O ｑ - and R ＦＢ２ is -Rf ２ ｐ -R Ｆ -O ｑ - and R Ｆ are each independently a divalent fluoropolyether group, Rf １ is a C optionally substituted by one or more fluorine atoms; １－１６ is an alkyl group, Rf ２ is a C optionally substituted by one or more fluorine atoms; １－６ is an alkylene group, p is 0 or 1; Each q is independently 0 or 1; X Ｂ teeth, each independently represents a single bond or -(R ６７ ) ｂ１ - (R ６８ ) ｂ２ - and R ６７ are each independently C １－６ is an alkylene group, R ６８ are each independently an oxygen atom, a sulfur atom, or NR ６９ , C.O.R. ６９ , N.R. ６９ CO or C ６－１２ is an arylene group, R ６９ are each independently a hydrogen atom or C １－６ is an alkyl group, b1 is an integer from 0 to 6, b2 is an integer from 0 to 6, the sum of b1 and b2 is 1 or more, The order of the repeating units enclosed in parentheses with b1 or b2 is arbitrary in the formula, R Ｂ are each independently an oxyalkylene-containing group. and The oxyalkylene-containing groups each independently represent the following formula: -R ６１ - (OR ６３ ) ｂ３ -R ６２ , or -X Ｅ (-R ６１ -(OR ６３ ) ｂ３ -R ６２ ) ｒ２ [In the formula: R ６１ are each independently a single bond or C １－６ is an alkylene group, R ６２ are each independently a hydrogen atom, C １－６ Alkyl group, or C １－６ is an alkoxy group, R ６３ are each independently C １－６ is an alkylene group, b3 each independently represents an integer of 1 to 6, X Ｅ is a trivalent to hexavalent hydrocarbon group having 1 to 20 carbon atoms, r2 is an integer from 2 to 9, and X Ｅ is one less than the valence of A surface treatment agent which is a compound represented by the formula:

2. In formulas (A1) and (A2), R Ｆ are each independently represented by the formula: -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ R Ｆａ ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - [In the formula: R Ｆａ are each independently a hydrogen atom, a fluorine atom, or a chlorine atom, a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula, provided that all R Ｆａ is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or more. The surface treatment agent according to claim 1 , wherein the group is a group represented by the formula:

3. In formulas (A1) and (A2), Rf １ is C １－１６ is a perfluoroalkyl group, Rf ２ is C １－６ is a perfluoroalkylene group, R Ｆ are each independently represented by the formula: -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - [In the formula: a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula, provided that all R Ｆａ is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or more. The surface treatment agent according to claim 1 , wherein the group is a group represented by the formula:

4. In formulas (A1) and (A2), R Ｆ are each independently represented by the following formula (f1), (f2), (f3), (f4), (f5), or (f6): -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ - (f1) [wherein d is an integer of 1 to 200, and e is 0 or 1.] -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f2) [In the formula, c and d each independently represent an integer of 0 to 30, e and f each independently represent an integer from 1 to 200; the sum of c, d, e, and f is an integer from 10 to 200; The order of occurrence of each repeating unit enclosed in parentheses with c, d, e, or f is arbitrary in the formula. -(R ６ -R ７ ) ｇ - (f3) [In the formula, R ６ is OCF ２ or O.C. ２ F ４ and R ７ is O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups selected from these groups, g is an integer from 2 to 100. -(R ６ -R ７ ) ｇ -R ｒ -(R ７’ -R ６’ ) ｇ’ - (f4) [In the formula, R ６ is OCF ２ or O.C. ２ F ４ and R ７ is O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups independently selected from these groups, R ６’ is OCF ２ or O.C. ２ F ４ and R ７’ is O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups independently selected from these groups, g is an integer from 2 to 100, g' is an integer from 2 to 100, R ｒ teeth, 【Chemistry 4】 (In the formula, * indicates the bonding position.) is. ]; -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] The surface treatment agent according to claim 1 , wherein the group is a group represented by the formula:

5. R Ｓｉ is represented by the following formula (S1), (S2), (S3), (S4) or (S5): 【Transformation 5】 [In the formula: R １１ are each independently a hydroxyl group or a hydrolyzable group, R １２ are each independently a hydrogen atom or a monovalent organic group, n1 is (SiR １１ ｎ１ R １２ ３－ｎ１ ) units are each independently an integer from 0 to 3, X １１ are each independently a single bond or a divalent group, R １３ are each independently a hydrogen atom or a monovalent organic group, each t is independently an integer of 2 or greater; R １４ are each independently a hydrogen atom, a halogen atom or -X １１ -SiR １１ ｎ１ R １２ ３－ｎ１ and R １５ are each independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms, R ａ１ are each independently -Z １ -SiR ２１ ｐ１ R ２２ ｑ１ R ２３ ｒ１ and Z １ are each independently a divalent group, R ２１ are each independently -Z １’ -SiR ２１’ ｐ１’ R ２２’ ｑ１’ R ２３’ ｒ１’ and R ２２ are each independently a hydroxyl group or a hydrolyzable group, R ２３ are each independently a hydrogen atom or a monovalent organic group, p1 is independently an integer of 0 to 3, Each q1 is independently an integer of 0 to 3, Each r1 is independently an integer of 0 to 3, The sum of p1, q1 and r1 is (SiR ２１ ｐ１ R ２２ ｑ１ R ２３ ｒ１ ) units is 3, Z １’ are each independently a divalent group, R ２１’ are each independently -Z １” -SiR ２２” ｑ１” R ２３” ｒ１” and R ２２’ are each independently a hydroxyl group or a hydrolyzable group, R ２３’ are each independently a hydrogen atom or a monovalent organic group, p1' is independently an integer of 0 to 3, Each q1' is independently an integer of 0 to 3, each r1' is independently an integer of 0 to 3; The sum of p1', q1' and r1' is (SiR ２１’ ｐ１’ R ２２’ ｑ１’ R ２３’ ｒ１’ ) units is 3, Z １” are each independently a divalent group, R ２２” are each independently a hydroxyl group or a hydrolyzable group, R ２３” are each independently a hydrogen atom or a monovalent organic group, Each q1" is independently an integer of 0 to 3, each r1" is independently an integer of 0 to 3; The sum of q1″ and r1″ is (SiR ２２” ｑ１” R ２３” ｒ１” ) units is 3, R ｂ１ are each independently a hydroxyl group or a hydrolyzable group, R ｃ１ are each independently a hydrogen atom or a monovalent organic group, Each k1 is independently an integer of 0 to 3, Each l1 is independently an integer of 0 to 3, m1 each independently represents an integer of 0 to 3; The sum of k1, l1 and m1 is (SiR ａ１ ｋ１ R ｂ１ ｌ１ R ｃ１ ｍ１ ) units is 3, R ｄ１ are each independently -Z ２ -CR ３１ ｐ２ R ３２ ｑ２ R ３３ ｒ２ and Z ２ are each independently a single bond or a divalent group; R ３１ are each independently -Z ２’ -CR ３２’ ｑ２’ R ３３’ ｒ２’ and R ３２ are each independently -Z ３ -SiR ３４ ｎ２ R ３５ ３－ｎ２ and R ３３ are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group, p2 is independently an integer of 0 to 3, Each q2 is independently an integer of 0 to 3, Each r2 is independently an integer of 0 to 3, The sum of p2, q2 and r2 is (CR ３１ ｐ２ R ３２ ｑ２ R ３３ ｒ２ ) units is 3, Z ２’ are each independently a single bond or a divalent group; R ３２’ are each independently -Z ３ -SiR ３４ ｎ２ R ３５ ３－ｎ２ and R ３３’ are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group, Each q2' is independently an integer of 0 to 3, each r2' is independently an integer of 0 to 3; The sum of q2' and r2' is (CR ３２’ ｑ２’ R ３３’ ｒ２’ ) units is 3, Z ３ are each independently a single bond or a divalent group; R ３４ are each independently a hydroxyl group or a hydrolyzable group, R ３５ are each independently a hydrogen atom or a monovalent organic group, n2 is independently an integer of 0 to 3, R ｅ１ are each independently -Z ３ -SiR ３４ ｎ２ R ３５ ３－ｎ２ and R ｆ１ are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group, k2 each independently represents an integer of 0 to 3; l2 is independently an integer of 0 to 3, m2 each independently represents an integer of 0 to 3; The sum of k2, l2 and m2 is (CR ｄ１ ｋ２ R ｅ１ ｌ２ R ｆ１ ｍ２ ) units is 3, R ｇ１ and R ｈ１ are each independently -Z ４ -SiR １１ ｎ１ R １２ ３－ｎ１ , -Z ４ -SiR ａ１ ｋ１ R ｂ１ ｌ１ R ｃ１ ｍ１ , or -Z ４ -CR ｄ１ ｋ２ R ｅ１ ｌ２ R ｆ１ ｍ２ and Z ４ are each independently a single bond or a divalent group, However, in formulae (S1), (S2), (S3), (S4), and (S5), there is at least one Si atom to which a hydroxyl group or a hydrolyzable group is bonded.] The surface treatment agent according to claim 1 , wherein the group is a group represented by the formula:

6. α1, β1, and γ1 are 1, and X Ａ The surface treatment agent according to claim 1 , wherein is a divalent group.

7. In formulas (B1) and (B2), The oxyalkylene-containing groups each independently represent the following formula: -R ６１ -(OR ６３ ) ｂ３ -R ６２ [In the formula: R ６１ is a single bond or C １－６ is an alkylene group, R ６２ is a hydrogen atom, C １－６ Alkyl group, or C １－６ is an alkoxy group, R ６３ are each independently C １－６ is an alkylene group, b3 is an integer from 1 to 6. The surface treatment agent according to claim 1 , wherein the group is a group represented by the formula:

8. In formulas (B1) and (B2), R ６３ is C １－３ The surface treatment agent according to claim 1 , which is an alkylene group.

9. In formulas (B1) and (B2), X Ｂ are each independently a single bond or -(R ６７ ) ｂ１ - (R ６８ ) ｂ２ - [In the formula: R ６７ are each independently C １－６ is an alkylene group, R ６８ are each independently an oxygen atom, a sulfur atom, CO, or NR ６９ , C.O.R. ６９ , N.R. ６９ CO or C ６－１２ is an arylene group, R ６９ are each independently a hydrogen atom or C １－６ is an alkyl group, b1 is an integer from 0 to 6, b2 is an integer from 0 to 6, the sum of b1 and b2 is 1 or more, The repeating units enclosed in parentheses with b1 or b2 may be present in any order in the formula.] The surface treatment agent according to claim 1,

10. In formulas (B1) and (B2), X Ｂ are each independently a single bond, C １－６ an alkylene group, or —R ６４ -O-R ６５ - and R ６４ is a single bond or C １－６ is an alkylene group, R ６５ is a single bond or C １－６ is an alkylene group, The surface treatment agent according to claim 1.

11. In formulas (B1) and (B2), R Ｆ are each independently represented by the formula: -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ R Ｆａ ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - [In the formula: R Ｆａ are each independently a hydrogen atom, a fluorine atom, or a chlorine atom, a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula, provided that all R Ｆａ is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or more. The surface treatment agent according to claim 1 , wherein the group is a group represented by the formula:

12. In formulas (B1) and (B2), Rf １ is C １－１６ is a perfluoroalkyl group, Rf ２ is C １－６ is a perfluoroalkylene group, R Ｆ are each independently represented by the formula: -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - [In the formula: a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula, provided that all R Ｆａ is a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or more. The surface treatment agent according to claim 1 , wherein the group is a group represented by the formula:

13. In formulas (B1) and (B2), R Ｆ are each independently represented by the following formula (f1), (f2), (f3), (f4), (f5), or (f6): -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ - (f1) [wherein d is an integer of 1 to 200, and e is 0 or 1.] -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f2) [In the formula, c and d each independently represent an integer of 0 to 30, e and f each independently represent an integer from 1 to 200; the sum of c, d, e, and f is an integer from 10 to 200; The order of occurrence of each repeating unit enclosed in parentheses with c, d, e, or f is arbitrary in the formula. -(R ６ -R ７ ) ｇ - (f3) [In the formula, R ６ is OCF ２ or O.C. ２ F ４ and R ７ is O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups selected from these groups, g is an integer from 2 to 100. -(R ６ -R ７ ) ｇ -R ｒ -(R ７’ -R ６’ ) ｇ’ - (f4) [In the formula, R ６ is OCF ２ or O.C. ２ F ４ and R ７ is O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups independently selected from these groups, R ６’ is OCF ２ or O.C. ２ F ４ and R ７’ is O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups independently selected from these groups, g is an integer from 2 to 100, g' is an integer from 2 to 100, R ｒ teeth, 【Transformation 6】 (In the formula, * indicates the bonding position.) is. ]; -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] The surface treatment agent according to claim 1 , wherein the group is a group represented by the formula:

14. 2. The surface treatment agent according to claim 1, wherein the content of the component (B) is 1 to 40 mass% based on the total of the components (A) and (B).

15. 2. The surface treatment agent according to claim 1, further comprising one or more other components selected from the group consisting of fluorine-containing oils, silicone oils, alcohols, and catalysts.

16. The surface treatment agent according to claim 1 , further comprising a solvent.

17. The surface treatment agent according to claim 1, which is used as an antifouling coating agent or a waterproof coating agent.

18. A pellet containing the surface treatment agent according to claim 1.

19. An article comprising a substrate and a layer formed on the substrate from the surface treatment agent according to claim 1.

20. 20. The article of claim 19, wherein the substrate is a glass substrate.

21. 20. The article of claim 19, which is an optical element.

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