Surface treatment agent

Abstract

To provide a surface treatment agent capable of realizing a film having good abrasion resistance.SOLUTION: There is provided a composition which comprises a silane compound (A) having a fluoropolyether group and a compound (B) having a fluoropolyether group and an allyl ether group. The silane compound (A) having a fluoropolyether group may be a compound having a fluoropolyether group and a hydrolyzable silyl group and preferably containing no allyl ether group and the compound (B) having a fluoropolyether group and an allyl ether group is not particularly limited but may have an average molecular weight of 5×102 to 1×105. Among such a range, the compound (B) has an average molecular weight of 2000 to 32000, more preferably 2500 to 12000 from the viewpoint of abrasion resistance.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 a substrate, can provide excellent water repellency, oil repellency, antifouling properties, etc. A layer obtained from a surface treatment agent containing a fluoropolyether group-containing silane compound (hereinafter also referred to as a "surface treatment layer") is applied as a so-called functional thin film to a wide variety of substrates, such as glass, plastics, fibers, sanitary products, and building materials (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-218639 A 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 having excellent functions, but there is a demand for a surface treatment layer having higher durability.

[0005] An object of the present disclosure is to provide a surface treatment agent capable of realizing a film having good abrasion resistance. [Means for solving the problem]

[0006] The present disclosure includes the following aspects. [1] A silane compound (A) having a fluoropolyether group; Compound having a fluoropolyether group and an allyl ether group (B) and The compound (B) is represented by the following formula (3), (4) or (5): R F1 α -X A -[AR B1 δ R B2 3-δ ] β (3) [R B1 δ R B2 3-δ A] γ -X A -R F2 -X A -[AR B1 δ R B2 3-δ ] γ (4) R Si γ -X A -R F2 -X A -[AR B1 δ R B2 3-δ ] γ (5) [In formula: Each A is independently a C atom or a Si atom; R F1 are each independently Rf 1 -R F -O q - and; R F2 is -Rf 2 p -R F -O q - and; Rf 1 each independently represents a C which may be substituted by one or more fluorine atoms; 1-16 is an alkyl group; Rf 2 C may be substituted with one or more fluorine atoms. 1-6 is an alkylene group; R F are each independently a divalent fluoropolyether group; p is 0 or 1; Each q is independently 0 or 1; R B1 -R B3 -O-CH=CH-CH3; R B2 are each independently -R B3 -O-CH2CH2CH2-SiR B4 ε R B5 3-ε and a hydrogen atom; R B3 each independently represents a single bond or C 1-20 is an alkylene group; R B4 are each independently a hydroxyl group or a hydrolyzable group; R B5 each independently represents a hydrogen atom or a monovalent organic group; R Si each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; In formula (5), at least one R Si is a monovalent group containing a Si atom having a hydroxyl group or a hydrolyzable group bonded thereto; X A each independently represents a single bond or a divalent to decavalent organic group; α is an integer from 1 to 9; β is an integer from 1 to 9; Each γ is independently an integer from 1 to 9; Each δ is independently an integer of 1 to 3. Each ε is independently an integer from 1 to 3. A composition comprising at least one compound represented by the formula (A) (wherein compound (A) and compound (B) are different). [2] The silane compound (A) having a fluoropolyether group is represented by the formula (1) or (2): [ka] [In formula: R F1 are each independently Rf 1 -R F -O q - and; R F2 is -Rf 2 p -R F -O q - and; Rf 1 each independently represents a C which may be substituted by one or more fluorine atoms; 1-16 is an alkyl group; Rf 2 C may be substituted with one or more fluorine atoms. 1-6 is an alkylene group; R F are each independently a divalent fluoropolyether group; p is 0 or 1; Each q is independently 0 or 1; R Si each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; In each of formula (1) and formula (2), at least one R Si is a monovalent group containing a Si atom having a hydroxyl group or a hydrolyzable group bonded thereto; In each of formula (1) and formula (2), R Si does not contain an allyl ether group; X A each independently represents a single bond or a divalent to decavalent organic group; α is an integer from 1 to 9; β is an integer from 1 to 9; Each γ is independently an integer from 1 to 9. The composition according to [1], comprising at least one compound represented by the formula: [3] R contained in the composition Si and R B1 R contained in the composition relative to the total B1The composition according to [1] or [2], wherein the proportion of is 25 mol % or less. [4] The silane compound (A) has the formula (1a): R F1 -X A -R Si (1a) [In formula: R F1 are each independently Rf 1 -R F -O q - and; Rf 1 each independently represents a C which may be substituted by one or more fluorine atoms; 1-16 is an alkyl group; R F are each independently a divalent fluoropolyether group; Each q is independently 0 or 1; R Si each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; In formula (1), at least one R Si is a monovalent group containing a Si atom having a hydroxyl group or a hydrolyzable group bonded thereto; In formula (1), R Si does not contain an allyl ether group; X A are each independently a single bond or a divalent to decavalent organic group.] In 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, 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; X51 is -(X 52 ) l5 - represents X 52 each independently represents -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 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 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 is independently an integer of 1 to 100, preferably an integer of 1 to 20; n5 is independently an integer of 1 to 20, preferably an integer of 1 to 6, more preferably an integer of 1 to 3; l5 is an integer from 1 to 10, preferably an integer from 1 to 5, and more preferably an integer from 1 to 3; p5 is 0 or 1; q5 is 0 or 1; Here, at least one of p5 and q5 is 1, and the order of the repeating units enclosed in parentheses with p5 or q5 is arbitrary. is a group represented by R Si But the following formula (S3): -SiR a1 k1 R b1 l1 R c1 m1 (S3) [In the formula, R a1 are each independently -Z 1 -SiR 22 q1 R 23 r1 represents; Z 1 each independently represents an oxygen atom or a divalent organic group, 1 The structure written as is shown on the right side (SiR 22 q1 R 23 r1 ) to bond; R 22 each independently represents a hydroxyl group or a hydrolyzable group; R 23 each independently represents a hydrogen atom or a monovalent organic group; q1 is (SiR 22 q1 R 23 r1 ) each unit independently represents an integer from 1 to 3; R b1 each independently represents a hydroxyl group or a hydrolyzable group; R c1 each independently represents 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, each m1 is independently an integer of 0 to 3, and the sum of k1, l1 and m1 is (SiR a1 k1 R b1 l1 R c1 m1 ) units are 3. The compound (B) is represented by the formula (3): R F1 α -X A -[AR B1 δ R B2 3-δ ] β (3) [In formula: Each A is independently a C atom or a Si atom; R F1 are each independently Rf 1 -R F -O q - and; Rf 1 each independently represents a C which may be substituted by one or more fluorine atoms; 1-16 is an alkyl group; R F are each independently a divalent fluoropolyether group; Each q is independently 0 or 1; R B1 -R B3 -O-CH=CH-CH3; R B2 are each independently -R B3 -O-CH2CH2CH2-SiR B4 ε R B5 3-ε and a hydrogen atom; R B3 each independently represents a single bond or C 1-20 is an alkylene group; R B4 are each independently a hydroxyl group or a hydrolyzable group; R B5 each independently represents a hydrogen atom or a monovalent organic group; R Si each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; X A each independently represents a single bond or a divalent to decavalent organic group; α is an integer from 1 to 9; β is an integer from 1 to 9; Each γ is independently an integer from 1 to 9. The composition according to any one of [1] to [3], comprising a compound represented by the following formula: [5] A surface treatment agent comprising the composition according to any one of [1] to [4]. [6] The surface treatment agent according to [5], further comprising one or more components selected from fluorine-containing oils and silicone oils. [7] The surface treatment agent according to [5] or [6], which is used as an antifouling coating agent or a waterproof coating agent. [8] An article comprising a substrate and a layer formed on the surface of the substrate from the composition according to any one of [1] to [4]. [9] An article comprising a substrate and a layer formed on the surface of the substrate from the surface treatment agent according to any one of [5] to [7]. Effect of the Invention

[0007] According to the present invention, a surface treatment agent capable of realizing a film having good abrasion resistance can be provided. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The composition of the present disclosure includes a silane compound (A) having a fluoropolyether group and a compound (B) having a fluoropolyether group and an allyl ether group. The composition of the present disclosure includes the above-mentioned compound (A) and compound (B), so that a film having good abrasion resistance can be realized. However, compound (A) and compound (B) are different.

[0009] By using the silane compound (A), a film having good abrasion resistance, particularly abrasion resistance against steel wool, can be provided. According to the study by the present inventors, it has been found that by using the compound (B) in addition to the compound (A), a film having good abrasion resistance against not only steel wool but also softer materials, for example, resin-based materials such as erasers, can be obtained. Although the present disclosure should not be interpreted as being limited to a specific theory, it is believed that the compound (B) has a vinyl ether group at the end, and such a group can exert an effect of suppressing damage to the film when friction occurs with a soft material.

[0010] (Silane Compound (A) Having a Fluoropolyether Group) The silane compound (A) having a fluoropolyether group may be a compound having a fluoropolyether group and a hydrolyzable silyl group, and preferably does not contain an allyl ether group. In a preferred embodiment, the compound (A) is represented by the following formula (1) or (2): [ka] [In formula: R F1 are each independently Rf 1 -R F -O q - and; R F2 is -Rf 2 p -R F -O q - and; Rf 1 each independently represents a C which may be substituted by one or more fluorine atoms; 1-16 is an alkyl group; Rf 2 C may be substituted with one or more fluorine atoms. 1-6 is an alkylene group; R F are each independently a divalent fluoropolyether group; p is 0 or 1; Each q is independently 0 or 1; R Si each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; In each of formula (1) and formula (2), at least one R Si is a monovalent group containing a Si atom having a hydroxyl group or a hydrolyzable group bonded thereto; In each of formula (1) and formula (2), R Si does not contain an allyl ether group; X A each independently represents a single bond or a divalent to decavalent organic group; α is an integer from 1 to 9; β is an integer from 1 to 9; Each γ is independently an integer from 1 to 9. It is preferable that the composition contains at least one compound represented by the following formula:

[0011] In the above formula (1), R F1 are each independently Rf 1 -R F -O q -It is.

[0012] In the above formula (2), R F2 is -Rf 2 p -R F -O q -It is.

[0013] In the above formula, Rf 1 each independently represents a C which may be substituted by one or more fluorine atoms; 1-16 It is an alkyl group.

[0014] C which may be substituted by 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 straight or branched C 1-3 is preferably a straight-chain C 1-6 Alkyl groups, especially straight-chain C 1-3 It is an alkyl group.

[0015] Above Rf 1 is preferably C substituted by one or more fluorine atoms 1-16 is an alkyl group, more preferably CF2H-C 1-15 A perfluoroalkylene group, more preferably C 1-16 It is a perfluoroalkyl group.

[0016] Above C 1-16The perfluoroalkyl group may be linear or branched, and is preferably a linear or branched C 1-6 Perfluoroalkyl groups, especially C 1-3 A perfluoroalkyl group, more preferably a linear C 1-6 Perfluoroalkyl groups, especially C 1-3 A perfluoroalkyl group, specifically, -CF3, -CF2CF3, or -CF2CF2CF3.

[0017] In the above formula, Rf 2 C may be substituted with one or more fluorine atoms. 1-6 It is an alkylene group.

[0018] C which may be substituted by 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.

[0019] Above 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.

[0020] Above C 1-6 The perfluoroalkylene group may be linear or branched, and is preferably a linear or branched C 1-3 A perfluoroalkylene group, more preferably a linear C 1-3 A perfluoroalkylene group, specifically, -CF2-, -CF2CF2-, or -CF2CF2CF2-.

[0021] In the above formula, p is 0 or 1. In one embodiment, p is 0. In another embodiment, p is 1.

[0022] In the above formula, each q is independently 0 or 1. In one embodiment, q is 0. In another embodiment, q is 1.

[0023] In the above formulas (1) and (2), R F are each independently a divalent fluoropolyether group.

[0024] 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 each independently represents a hydrogen atom, a fluorine atom, or a chlorine atom, a, b, c, d, e, and f are each independently 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.] (hereinafter also referred to as a group represented by "PFPE").

[0025] R Fa is preferably a hydrogen atom or a fluorine atom, more preferably a fluorine atom. 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.

[0026] Preferably, a, b, c, d, e and f may each independently be an integer of 0 to 100.

[0027] The sum of a, b, 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. The sum of a, b, c, d, e and f is preferably 200 or less, more preferably 100 or less, and even more preferably 60 or less, and may be, for example, 50 or less or 30 or less.

[0028] 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))-, etc. -(OC4F8)- may be any of -(OCF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2)-, -(OCF2CF(CF3)CF2)-, -(OCF2CF2CF(CF3))-, -(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 -(OCF2CF2CF2)-, -(OCF(CF3)CF2)-, and -(OCF2CF(CF3))-. -(OC2F4)- may be any of -(OCF2CF2)- and -(OCF(CF3))-.

[0029] The ring structure may be a three-, four-, five-, or six-membered ring as described below. [ka] [In the formula, * indicates the bond position.]

[0030] The ring structure may be preferably a four-, five-, or six-membered ring, more preferably a four-, or six-membered ring.

[0031] The repeating unit having a ring structure may preferably be the following unit. [ka] [In the formula, * indicates the bond position.]

[0032] In one embodiment, the repeating unit is linear. By making the repeating unit linear, the surface slip property, abrasion resistance, etc. of the film (surface treatment layer) can be improved.

[0033] In one embodiment, the repeating unit is a branched chain. By making the repeating unit a branched chain, the dynamic friction coefficient of the film (surface treatment layer) can be increased.

[0034] 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.]; -(OC4F8) c -(OC3R Fa 6) d -(OC2F4) e -(OCF2) f - (f2) [In the formula, R Faare each independently a hydrogen atom, a fluorine atom or a chlorine atom, and preferably a fluorine atom; c and d are each independently an integer of 0 or more and 30 or less; e and f are each independently 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 repeat unit enclosed in parentheses with the subscript 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 bond 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.]

[0035] In the above formula (f1), d is preferably an integer of 5 to 200, more preferably 10 to 100, further preferably 15 to 50, for example, an integer of 25 to 35. In the above formula (f1), OC3F6 is preferably (OCF2CF2CF2), (OCF(CF3)CF2) or (OCF2CF(CF3)), more preferably (OCF2CF2CF2). In the above formula (f1), (OC2F4) is preferably (OCF2CF2) or (OCF(CF3)), more preferably (OCF2CF2). In one embodiment, e is 0. In another embodiment, e is 1.

[0036] In the above 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 above formula (f2) is preferably -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f -, more preferably -(OCF2CF2CF2CF2) c -(OCF2CF2CF2) d -(OCF2CF2) e -(OCF2) f In another embodiment, formula (f2) is a group represented by -(OC2F4) e -(OCF2) f In yet another embodiment, the formula (f2) may be a group represented by -(OC4F8) c -(OCF2CF2(CR Fa )2) d10 -(OCF2CF(CF3)) d11 -(OCF2CF2) e -(OCF2) fd10 and d11 each independently represent an integer of 0 to 200, preferably an integer of 5 to 200, more preferably an integer of 10 to 200. However, the sum of d10 and d11 is 0 to 200, preferably 5 to 200, more preferably 10 to 200.

[0037] In the above formula (f3), R 6 is preferably OC2F4, and in another embodiment, OCF2. In (f3) above, 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, and more preferably a group selected from OC3F6 and 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 of the 2F4OC2F4OC3F6-, -OC2F4OC2F4OC4F8-, -OC2F4OC3F6OC2F4-, -OC2F4OC3F6OC3F6-, -OC2F4OC4F8OC2F4-, -OC3F6OC2F4OC2F4-, -OC3F6OC2F4OC3F6-, -OC3F6OC3F6OC2F4-, and -OC4F8OC2F4OC2F4- are mentioned. In the above formula (f3), g is preferably an integer of 3 or more, more preferably an integer of 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 12 may be either linear or branched, and is preferably linear. In this embodiment, the above formula (f3) is preferably -(OC2F4-OC3F6) g -or- (OC2F4-OC4F8) g -It is.

[0038] In the above formula (f4), R 6 , R 7 and g have the same meanings as those described in the above formula (f3) and have the same embodiments. 6’ , R 7’ and g' are R 6 , R 7 and g have the same meaning and behavior. r is preferably [ka] [In the formula, * indicates the bond position.] and more preferably [ka] [In the formula, * indicates the bond position.] It is.

[0039] 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.

[0040] In the above formula (f6), f 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.

[0041] In one embodiment, the R F is a group represented by the above formula (f1).

[0042] In one embodiment, the R F is a group represented by the above formula (f2).

[0043] In one embodiment, the R F is a group represented by the above formula (f3).

[0044] In one embodiment, the RF is a group represented by the above formula (f4).

[0045] In one embodiment, the R F is a group represented by the above formula (f5).

[0046] Above R F In the above, the ratio of e to f (hereinafter referred to as "e / f ratio") is 0.1 to 10, preferably 0.2 to 5, more preferably 0.2 to 2, even more preferably 0.2 to 1.5, and even more preferably 0.2 to 0.85. By making the e / f ratio 10 or less, the slipperiness, abrasion resistance, and chemical resistance of the film (surface treatment layer) obtained from this compound are further improved. The smaller the e / f ratio, the more improved the slipperiness and abrasion resistance of the film. On the other hand, by making the e / f ratio 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.

[0047] In the above fluoropolyether group-containing silane compound, R F1 and R F2 The number average molecular weight of the portion 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. F1 and R F2 The number average molecular weight of 19 The value is measured by F-NMR.

[0048] In another embodiment, R F1 and R F2 The number average molecular weight of the portion may be from 500 to 30,000, preferably from 1,000 to 20,000, more preferably from 2,000 to 15,000, even more preferably from 2,000 to 10,000, for example from 3,000 to 6,000.

[0049] In another embodiment, R F1 and R F2The number average molecular weight of the portion may be from 4,000 to 30,000, preferably from 5,000 to 10,000, and more preferably from 6,000 to 10,000.

[0050] In the above formulas (1) and (2), R Si are each independently a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded, and at least one R Si R is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded. Si contributes to adhesion to the substrate and may chemically react with the substrate material.

[0051] 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.

[0052] In a preferred embodiment, R Si is expressed by the following formula (S3) or (S4): [ka] It is a group represented by the following formula:

[0053] In the above formula, R a1 are each independently -Z 1 -SiR 22 q1 R 23 r1 It is.

[0054] Above Z 1 are each independently an oxygen atom or a divalent organic group. 1 The structure written as is shown on the right side (SiR 22 q1 R 23 r1 )

[0055] In a preferred embodiment, Z 1 is a divalent organic group.

[0056] In a preferred embodiment, Z1 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 it is bonded. 1 -Si) does not contain a siloxane bond.

[0057] 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 groups may be linear or branched, but are preferably linear. 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 by one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0058] In a preferred embodiment, Z 1 is C 1-6 Alkylene group or -(CH2) z3 -Phenylene-(CH2) z4 -, preferably -phenylene-(CH2) z4 -It is. 1 is such a group, light resistance, particularly ultraviolet resistance, can be improved.

[0059] 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-.

[0060] Above R 22 are each independently a hydroxyl group or a hydrolyzable group.

[0061] R 22 are preferably each independently a hydrolyzable group.

[0062] R 22 are preferably each independently -OR j , -OCOR j , -ON=CR j 2, -NR j 2, -NHR j , -NCO, or halogen (wherein R j is a substituted or unsubstituted C 1-4 alkyl group), more preferably -OR j (i.e., an alkoxy group). j Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl groups; 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 j is a methyl group, and in another embodiment, R j is an ethyl group.

[0063] Above R 23 are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above hydrolyzable groups.

[0064] R 23 In the above, the monovalent organic group is preferably C 1-20 is an alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0065] Each of the above 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 q1 and r1 is (SiR 22 q1 R23 r1 ) units, it is 3.

[0066] In one embodiment, q1 is (SiR 22 q1 R 23 r1 ) units each independently represents an integer of 1 to 3, preferably an integer of 2 or 3, and more preferably 3.

[0067] In one embodiment, q1 is (SiR 22 q1 R 23 r1 ) units each independently represents an integer of 1 to 3, preferably an integer of 2 or 3, and more preferably 3.

[0068] In the above formula, R b1 are each independently a hydroxyl group or a hydrolyzable group.

[0069] Above R b1 are preferably each independently a hydrolyzable group.

[0070] Above R b1 are preferably each independently -OR j , -OCOR j , -ON=CR j 2, -NR j 2, -NHR j , -NCO, or halogen (wherein R j is a substituted or unsubstituted C 1-4 alkyl group), more preferably -OR j (i.e., an alkoxy group). j Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl groups; 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 j is a methyl group, and in another embodiment, R j is an ethyl group.

[0071] In the above formula, R c1 are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above hydrolyzable groups.

[0072] Above R c1 In the above, the monovalent organic group is preferably C 1-20 is an alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0073] Each of the k1's is independently an integer of 0 to 3, each of the l1's is independently an integer of 0 to 3, and each of the m1's is 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.

[0074] 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, and more preferably 3. In a preferred embodiment, k1 is 3.

[0075] In the above formulas (1) and (2), R Si When is a group represented by formula (S3), preferably, at least two Si atoms to which hydroxyl groups or hydrolyzable groups are bonded are present in the terminal portions of formulas (1) and (2).

[0076] In a preferred embodiment, in formula (S3), R a1 When present, at least one, and preferably all, R a1 In the above formula, q1 is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0077] In a preferred embodiment, in formula (S3), k1 is 2 or 3, preferably 3; q1 is 2 or 3, preferably 3.

[0078] Above R e1 are each independently -Z 3 -SiR 34 n2 R 35 3-n2 It is.

[0079] Above Z 3 are each independently a single bond, an oxygen atom, or a divalent organic group. 3 The structure written as is shown on the right side (SiR 34 n2 R 35 3-n2 )

[0080] In one embodiment, Z 3 is an oxygen atom.

[0081] In one embodiment, Z 3 is a divalent organic group.

[0082] 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 groups may be linear or branched, but are preferably linear. 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 by one or more substituents selected from alkynyl groups, but is preferably unsubstituted.

[0083] In a preferred embodiment, Z 3 is C 1-6 Alkylene group or -(CH2) z7” -Phenylene-(CH2) z8” -, preferably -phenylene-(CH2) z8” -It is. 3 is such a group, light resistance, particularly ultraviolet resistance, can be improved.

[0084] 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-.

[0085] Above R 34 are each independently a hydroxyl group or a hydrolyzable group.

[0086] R 34 are preferably each independently a hydrolyzable group.

[0087] R 34 are preferably each independently -OR j , -OCOR j , -ON=CR j 2, -NR j 2, -NHR j , -NCO, or halogen (wherein R j is a substituted or unsubstituted C 1-4 alkyl group), more preferably -OR j (i.e., an alkoxy group). jExamples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl groups; 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 j is a methyl group, and in another embodiment, R j is an ethyl group.

[0088] Above R 35 are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above hydrolyzable groups.

[0089] Above R 35 In the above, the monovalent organic group is preferably C 1-20 is an alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0090] In the above formula, n2 is (SiR 34 n2 R 35 3-n2 ) units are each independently an integer of 0 to 3. Si is a group represented by formula (S4), n2 is 1 to 3 in the terminal portion of formula (1) and formula (2) (SiR 34 n2 R 35 3-n2 ) unit is present. That is, in such a terminal portion, all n2s do not become 0 at the same time. In other words, in the terminal portion of formula (1) and formula (2), there is at least one Si atom to which a hydroxyl group or a hydrolyzable group is bonded.

[0091] n2 is (SiR 34 n2 R 35 3-n2 ) units are each independently preferably an integer of 1 to 3, more preferably 2 or 3, and even more preferably 3.

[0092] Above Rf1 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 hydrolyzable groups.

[0093] Above R f1 In the above, the monovalent organic group is preferably C 1-20 Alkyl group or -(C s H 2s ) t1 -(OC s H 2s ) t2 (wherein s is an integer of 1 to 6, preferably an integer of 2 to 4; t1 is 1 or 0, preferably 0; and t2 is an integer of 1 to 20, preferably an integer of 2 to 10, more preferably an integer of 2 to 6), more preferably C 1-20 Alkyl groups, more preferably C 1-6 An alkyl group, particularly preferably a methyl group, is preferred.

[0094] In one embodiment, R f1 is a hydroxyl group.

[0095] In another embodiment, R f1 is a monovalent organic group, preferably C 1-20 is an alkyl group, more preferably C 1-6 It is an alkyl group.

[0096] In the above formulas (1) and (2), R Si When is a group represented by formula (S4), preferably, at least two Si atoms to which hydroxyl groups or hydrolyzable groups are bonded are present in the terminal portions of formulae (1) and (2).

[0097] In one embodiment, R Si is a group represented by formula (S4), n2 is 1 to 3, preferably 2 or 3, and more preferably 3 (SiR 34 n2 R 35 3-n2) units are present in each terminal portion of formula (1) and formula (2) by 2 or more, for example, 2 to 27, preferably 2 to 9, more preferably 2 to 6, further preferably 2 to 3, and particularly preferably 3.

[0098] In a preferred embodiment, in formula (S4), R e1 When present, at least one, and preferably all, R e1 In the above formula, n2 is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0099] In a preferred embodiment, in formula (S4), l2 is 2 or 3, preferably 3; and n2 is 2 or 3, preferably 3.

[0100] 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 can therefore form a film with even higher abrasion resistance.

[0101] In one embodiment, R Si is a group represented by formula (S3).

[0102] In one embodiment, R Si is a group represented by formula (S4).

[0103] X A may each independently be a single bond or a divalent to decavalent organic group.

[0104] Above X A The divalent to decavalent organic group in is preferably a divalent to octavalent organic group. In one embodiment, the divalent to decavalent organic group is preferably a divalent to tetravalent organic group, more preferably a divalent organic group. In another embodiment, the divalent to decavalent organic group is preferably a trivalent to octavalent organic group, more preferably a trivalent to hexavalent organic group.

[0105] In one embodiment, XA is a single bond or a divalent organic group, α is 1, and β is 1.

[0106] In one embodiment, X A is a single bond or a divalent organic group, and γ is 1.

[0107] In one embodiment, X A is a trivalent to hexavalent organic group, α is 1, and β is 2 to 5.

[0108] In one embodiment, X A is a trivalent to hexavalent organic group, and γ is 2 to 5.

[0109] In one embodiment, X A is a trivalent organic group, α is 1, and β is 2.

[0110] In one embodiment, X A is a trivalent organic group and γ is 2.

[0111] X A When is a single bond or a divalent organic group, formulas (1) and (2) are represented by the following formulas (1a) and (2a). [ka]

[0112] In each of formula (1a) or formula (2a), at least one R Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded. Si does not contain an allyl ether group.

[0113] In one embodiment, X A is a single bond.

[0114] In another embodiment, X A is a divalent organic group.

[0115] 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 each independently represents -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 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 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 is independently an integer of 1 to 100, preferably an integer of 1 to 20; n5 is independently an integer of 1 to 20, preferably an integer of 1 to 6, more preferably an integer of 1 to 3; l5 is an integer from 1 to 10, preferably an integer from 1 to 5, and more preferably an integer from 1 to 3; p5 is 0 or 1; q5 is 0 or 1; Here, at least one of p5 and q5 is 1, and the order of the repeating units enclosed in parentheses with p5 or q5 is arbitrary. Here, X is a divalent organic group represented by the formula: A (Typically X A Hydrogen atoms of C 1-3 Alkyl group and C 1-3 In a preferred embodiment, X A is not substituted with these groups.

[0116] In a preferred embodiment, the X A are each independently -(R 51 ) p5 -(X 51 ) q5 -R 52 -It is. 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, and more preferably an integer of 2 to 3. 52 (Typically R 52 Hydrogen atoms of C 1-3 Alkyl group and C 1-3 In a preferred embodiment, R 56 is not substituted with these groups.

[0117] Preferably, the above X A are each independently Single bond, C 1-20 An alkylene group, -R 51 -X 53 -R52 -or -X 54 -R 52 - [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(R 53 )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 are as defined above; u5 is an integer of 1 to 20, preferably an integer of 2 to 6, and more preferably an integer of 2 to 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.

[0118] 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 - [where, X 53 , X 54 , s5 and t5 are as defined above.] It is.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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 v5 H 2v5 )- [In the formula, R 53 m5, s5, t5 and u5 are the same as defined above, and v5 is an integer of 1 to 20, preferably an integer of 2 to 6, and more preferably an integer of 2 to 3.] It is.

[0123] In the above formula, -(C v H 2v )- may be straight chain or branched, for example, -CH2CH2-, -CH2CH2CH2-, -CH(CH3)-, -CH(CH3)CH2-.

[0124] Above X A are each independently a fluorine atom, C 1-3 Alkyl group and C 1-3 Fluoroalkyl groups (preferably C1-3 perfluoroalkyl groups). In one embodiment, X A is non-substituted.

[0125] Furthermore, the above X A The left side of each equation is R F1 or R F2 and the right side is R Si Bind to.

[0126] In one embodiment, X A are each independently -OC 1-6 It may be other than an alkylene group.

[0127] In another embodiment, X A Examples of the groups include the following: [ka] [ka] [In the formula, R 41 are each independently a hydrogen atom, a phenyl group, or C 1-6 Alkyl group or C 1-6 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 1-6or C 1-6 represents an alkoxy group, preferably a methyl group or a methoxy group, and 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 backbone F1 or R F2 and E is R Si Binds to .]

[0128] 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-,<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CF2CF2OCF2CF2CF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CF2CF2OCF(CF3)CF2OCF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CF2CF2OCF(CF3)CF2OCF2CF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CF2CF2OCF(CF3)CF2OCF2CF2CF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CHFCF2OCF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CHFCF2OCF2CF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CHFCF2OCF2CF2CF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CHFCF2OCF(CF3)CF2OCF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CHFCF2OCF(CF3)CF2OCF2CF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CHFCF2OCF(CF3)CF2OCF2CF2CF2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCF2CHFOCF2CF2CF2-C(O)NH-CH2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2(CH2)7CH2Si(OCH3)2OSi(OCH3)2(CH2)2Si(OCH3)2OSi(OCH3)2(CH2)2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CH2CH2Si(OCH3)2OSi(OCH3)2(CH2)3-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CH2CH2Si(OCH2CH3)2OSi(OCH2CH3)2(CH2)3-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CH2CH2Si(OCH3)2OSi(OCH3)2(CH2)2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2OCH2CH2CH2Si(OCH2CH3)2OSi(OCH2CH3)2(CH2)2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -(CH2)2-Si(CH3)2-(CH2)2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CH2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -(CH2)2-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -(CH2)3-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -(CH2)4-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -(CH2)5-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -(CH2)6-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CO-、<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr"> -CONH-、<h2 style=";text-align:left;direction:ltr"> -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)-CH2- (wherein Ph means phenyl), -CON(Ph)-(CH2)2- (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- (wherein 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-, -OCFHCF2-, [ka] etc.

[0129] In yet another embodiment, X A are each independently represented by 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.

[0130] 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. 18 is an oxygen atom or a divalent polar group.

[0131] The above-mentioned "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" includes, for example, C 1-6 Alkyl groups, for example methyl, ethyl, n-propyl, which may be substituted by one or more fluorine atoms.

[0132] In the above formula, R 17 are each independently a hydrogen atom, a fluorine atom or a lower fluoroalkyl group, and preferably a fluorine atom. The "lower fluoroalkyl group" is, for example, 1-6 , preferably C 1-3 Fluoroalkyl groups, preferably C 1-3 A perfluoroalkyl group is preferable, a trifluoromethyl group or a pentafluoroethyl group is more preferable, and a trifluoromethyl group is even more preferable.

[0133] 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, or C 1-6 Alkyl group or C 1-6 The alkoxy group is preferably a methyl group; each X A In the group, any one of T may be an R F1 or R F2 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-, where Ph means phenyl, or [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, and more preferably a methyl group. Some of the other Ts are R in the molecular backbone. Si and if present, each remaining T is 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.

[0134] 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.

[0135] 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.

[0136] In a preferred embodiment, preferred radical scavenging groups or UV absorbing groups include groups represented by the following formula: [ka]

[0137] In this embodiment, X A may each independently be a trivalent to decavalent organic group.

[0138] In yet another embodiment, X A Examples of include the following groups: [ka] [In the formula, R 25 , R 26 and R 27 are each independently a divalent to hexavalent organic group, R 25 At least one R F1 Binds to R 26 and R 27 Each has at least one R Si Binds to .]

[0139] In one embodiment, the 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-.

[0140] In one embodiment, the R 26 and R 27are 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 1-6 Alkyl group, -R 36 -R 37 -R 36 -, -R 36 -CHR 38 2-, etc. Here, R 36 each independently represents a single bond or C 1-6 Alkyl groups, preferably C 1-6 R is an alkyl group. 37 is N, O or S, preferably N or O. 38 -R 45 -R 46 -R 45 -, -R 46 -R 45 -or-R 45 -R 46 - Here, R 45 are each independently 1-6 R is an alkyl group. 46 is N, O or S, preferably O.

[0141] The above compound is not particularly limited, but may be 5×10 2 ~1×10 5 In particular, from the viewpoint of UV resistance and abrasion durability, it is preferable that the average molecular weight is 2,000 to 30,000, and more preferably 2,500 to 12,000. In the present disclosure, the "average molecular weight" refers to a number average molecular weight, and the "average molecular weight" is 19 The value is measured by F-NMR.

[0142] In one embodiment, compound (A) may be preferably a compound represented by formula (1), more preferably a compound represented by formula (1a), and even more preferably a compound represented by formula (1b), and in another embodiment, compound (A) may be preferably a compound represented by formula (2), more preferably a compound represented by formula (2a), and even more preferably a compound represented by formula (2b).

[0143] The fluoropolyether group-containing silane compound represented by the above formula (1) or formula (2) is not particularly limited, but may be 5×10 2 ~1×10 5 Within this range, it is preferable from the viewpoint of wear resistance that the average molecular weight is 2,000 to 32,000, more preferably 2,500 to 12,000. Note that the "average molecular weight" refers to a number average molecular weight, and the "average molecular weight" is 19 The value is measured by F-NMR.

[0144] The total content of the compounds represented by formula (1) or (2) in compound (A) may be preferably 80% by mass or more and 100% by mass or less, more preferably 90% by mass or more and 100% by mass or less, and even more preferably 95% by mass or more and 100% by mass or less.

[0145] (Compound (B) Having a Fluoropolyether Group and an Allyl Ether Group) The compound (B) having a fluoropolyether group and an allyl ether group has a fluoropolyether group and an allyl ether group, and in a preferred embodiment, is represented by the following formula (3), (4) or (5): R F1 α -X A -[AR B1 δ R B2 3-δ ] β (3) [R B1 δ R B2 3-δ A] γ -X A -R F2 -X A -[AR B1 δ R B2 3-δ ] γ (4) R Si γ -X A -R F2 -X A -[ARB1 δ R B2 3-δ ] γ (5) and a compound (B) represented by the formula: [In formula: Each A is independently a C atom or a Si atom; R F1 are each independently Rf 1 -R F -O q - and; R F2 is -Rf 2 p -R F -O q - and; Rf 1 each independently represents a C which may be substituted by one or more fluorine atoms; 1-16 is an alkyl group; Rf 2 C may be substituted with one or more fluorine atoms. 1-6 is an alkylene group; R F are each independently a divalent fluoropolyether group; p is 0 or 1; Each q is independently 0 or 1; R B1 -R B3 -O-CH=CH-CH3; R B2 are each independently -R B3 -O-CH2CH2CH2-SiR B4 ε R B5 3-ε and a hydrogen atom; R B3 each independently represents a single bond or C 1-20 is an alkylene group; R B4 are each independently a hydroxyl group or a hydrolyzable group; R B5 each independently represents a hydrogen atom or a monovalent organic group; R Si each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; In formula (5), at least one R Si is a monovalent group containing a Si atom having a hydroxyl group or a hydrolyzable group bonded thereto; X A each independently represents a single bond or a divalent to decavalent organic group; α is an integer from 1 to 9; β is an integer from 1 to 9; Each γ is independently an integer from 1 to 9; Each δ is independently an integer from 1 to 3; Each ε is independently an integer from 1 to 3. The compound includes at least one compound represented by the formula:

[0146] By including the above compound, a film having good abrasion resistance can be realized.

[0147] In the above formulas (3), (4) and (5), R F1 , R F2 , R Si , X A , α, β and γ are as defined above.

[0148] Each A is independently a C atom or a Si atom. In one embodiment, A is a C atom. In another embodiment, A is a Si atom. A is preferably a Si atom.

[0149] R B1 are each independently -R B3 -O-CH=CH-CH3.

[0150] R B2 are each independently -R B3 -O-CH2CH2CH2-SiR B4 ε R B5 3-εand a hydrogen atom. B2 -R B3 -O-CH2CH2CH2-SiR B4 ε R B5 3-ε In another embodiment, R B2 can be a hydrogen atom.

[0151] Above R B3 each independently represents a single bond or C 1-20 In one embodiment, R B3 may preferably be a single bond. B3 is preferably C 1-20 Alkylene group, more preferably C 1-6 It may be an alkylene group.

[0152] R B4 are each independently a hydroxyl group or a hydrolyzable group.

[0153] R B4 are preferably each independently a hydrolyzable group.

[0154] R B4 are preferably each independently -OR j , -OCOR j , -ON=CR j 2, -NR j 2, -NHR j , -NCO, or halogen (wherein R j is a substituted or unsubstituted C 1-4 alkyl group), more preferably -OR j (i.e., an alkoxy group). j Examples of R include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl groups; 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 jis a methyl group, and in another embodiment, R j is an ethyl group.

[0155] Above R B5 are each independently a hydrogen atom or a monovalent organic group. Such monovalent organic groups are monovalent organic groups excluding the above hydrolyzable groups.

[0156] R B5 In the above, the monovalent organic group is preferably C 1-20 is an alkyl group, more preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0157] In one embodiment, ε is (SiR B4 ε R B5 3-ε ) units each independently represents an integer of 1 to 3, preferably an integer of 2 or 3, and more preferably 3.

[0158] In one embodiment, δ is (AR B1 δ R B2 3-δ ) units each independently represents an integer of 1 to 3, preferably an integer of 2 or 3, and more preferably 3.

[0159] The compound (B) represented by the above formula (3), formula (4) or formula (5) is not particularly limited, but may be 5×10 2 ~1×10 5 Within this range, it is preferable for the average molecular weight to be 2,000 to 32,000, more preferably 2,500 to 12,000, from the viewpoint of wear resistance.

[0160] In the above composition, R contained in the above composition Si and R B1 R contained in the above composition relative to the total B1The ratio is preferably 25 mol% or less, more preferably 20 mol% or less, and even more preferably 10 mol% or less, and may be, for example, 0.1 mol% or more, and furthermore, 1 mol% or more. When the ratio is within this range, it may be easy to provide a film having better abrasion resistance, particularly abrasion resistance against soft materials (for example, resin-based materials such as erasers).

[0161] The content of the compound (B) represented by the above formula (3), formula (4) or formula (5) may be preferably 0.1% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 20% by mass or less, based on 100% by mass of the total of the above compounds (A) and (B). When the content is within this range, it may be easy to provide a film having better abrasion resistance, particularly abrasion resistance against soft materials (e.g., resin-based materials such as erasers).

[0162] In the composition, the total content of the compound (A) and the compound (B) may be preferably 80% by mass or more and 100% by mass or less, more preferably 90% by mass or more and 100% by mass or less, and even more preferably 95% by mass or more and 100% by mass or less.

[0163] (Surface treatment agent) The surface treatment agent of the present disclosure includes the above composition. The total content of the above compound (A) and the above compound (B) may be preferably 0.02 to 40.0 mass%, more preferably 0.02 to 30.0 mass%, further preferably 0.04 to 25.0 mass%, particularly preferably 0.05 to 20.0 mass% in 100 mass% of the surface treatment agent. By setting the content of the fluoropolyether group-containing silane compound within the above range, higher water and oil repellency can be obtained. In the composition of the present disclosure, the non-volatile content may be the portion excluding the solvent from the total amount of the composition.

[0164] (Other Ingredients) The surface treatment agent of the present disclosure may further contain a (non-reactive) fluoropolyether compound that can be understood as a fluorine-containing oil, preferably a perfluoro(poly)ether compound (hereinafter collectively referred to as "fluorine-containing oil"), a (non-reactive) silicone compound that can be understood as a silicone oil (hereinafter referred to as "silicone oil"), alcohols, catalysts, surfactants, polymerization inhibitors, sensitizers, etc. The other components are components different from the above-mentioned compound (A) and compound (B). In a preferred embodiment, the surface treatment agent of the present disclosure further contains one or more components selected from fluorine-containing oils and silicone oils.

[0165] The fluorine-containing oil is not particularly limited, but examples thereof include compounds represented by the following general formula (6) (perfluoro(poly)ether compounds). Rf 5 -(OC4F8) a” -(OC3F6) b” -(OC2F4) c” -(OCF2) d” -Rf 6 (6) In the formula, Rf 5 C may be substituted with one or more fluorine atoms. 1-16 Alkyl groups (preferably C 1-16 Rf represents a perfluoroalkyl group; 6 C may be substituted with one or more fluorine atoms. 1-16 Alkyl groups (preferably C 1-16 perfluoroalkyl group), a fluorine atom or a hydrogen atom; 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 perfluoro(poly)ether 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 greater than 30, preferably 40 to 300, and more preferably 50 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. Among these repeating units, -(OC4F8)- may be any of -(OCF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2)-, -(OCF2CF(CF3)CF2)-, -(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)-.

[0166] Examples of the perfluoro(poly)ether compound represented by the above general formula (6) include compounds represented by the following general formulas (6a) and (6b) (which may be one type or a mixture of two or more types). Rf 5 -(OCF2CF2CF2) b” -Rf 6 (6a) Rf 5 -(OCF2CF2CF2CF2) a” -(OCF2CF2CF2) b” -(OCF2CF2) c” -(OCF2) d” -Rf 6 (6b) In these formulas, Rf 5 and Rf 6is as defined above; in formula (6a), b" is an integer of 1 or more and 100 or less; in formula (6b), 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.

[0167] From another perspective, the fluorine-containing oil is represented by the general formula Rf 3 -F(where Rf 3 is C 5-16 It may be a compound represented by the formula: embedded image which is a perfluoroalkyl group. It may also be a chlorotrifluoroethylene oligomer.

[0168] The above-mentioned fluorinated oil may have a number average molecular weight of preferably 1000 or more, more preferably 1500 or more, and even more preferably 2000 or more. The above-mentioned fluorinated oil may have a number average molecular weight of preferably 30000 or less, more preferably 20000 or less, and even more preferably 10000 or less. The molecular weight of the fluorinated oil may be measured using GPC.

[0169] The fluorine-containing oil may be contained in an amount of, for example, 0 to 50 mass%, preferably 0 to 30 mass%, more preferably 0 to 5 mass% relative to the surface treatment agent. In one embodiment, the surface treatment agent of the present disclosure is substantially free of fluorine-containing oil. "Substantially free of fluorine-containing oil" means that the surface treatment agent does not contain any fluorine-containing oil or may contain a very small amount of fluorine-containing oil.

[0170] In one embodiment, the number average molecular weight of the fluorine-containing oil may be smaller than the number average molecular weight of the fluorine-containing silane compound. By setting the average molecular weight in this range, the surface treatment layer obtained from the compound can be prevented from decreasing in transparency, and a cured product having high abrasion resistance and high surface slipperiness can be formed.

[0171] The fluorine-containing oil can contribute to improving the surface slip properties of the layer formed by the surface treatment agent of the present disclosure.

[0172] The silicone oil may be, for example, a linear or cyclic silicone oil having 2,000 or less siloxane bonds. The linear silicone oil may be a so-called straight silicone oil or a modified silicone oil. The straight silicone oil may be, for example, dimethyl silicone oil, methylphenyl silicone oil, or methylhydrogen silicone oil. The modified silicone oil may be, for example, a straight silicone oil modified with alkyl, aralkyl, polyether, higher fatty acid ester, fluoroalkyl, amino, epoxy, carboxyl, or alcohol. The cyclic silicone oil may be, for example, cyclic dimethylsiloxane oil.

[0173] 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 fluorine-containing silane compounds of the present disclosure (when two or more types are used, the total of these, the same applies below).

[0174] The silicone oil can contribute to improving the surface slipperiness of the surface treatment layer.

[0175] 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, iso-propanol, tert-butanol, CF3CH2OH, CF3CF2CH2OH, and (CF3)2CHOH. By adding these alcohols to the surface treatment agent, the stability of the surface treatment agent is improved, and the compatibility of the fluorine-containing silane compound with the solvent is also improved.

[0176] The alcohol is preferably contained in the surface treatment agent in an amount of 0.1 to 5 times, more preferably 0.5 to 3 times, and even more preferably 0.8 to 1.2 times the molar ratio of the metal compound. By setting the content ratio of the alcohol in the above range, the stability of the surface treatment layer can be further improved.

[0177] Examples of the catalyst include acids (eg, acetic acid, trifluoroacetic acid, etc.), bases (eg, ammonia, triethylamine, diethylamine, etc.), transition metals (eg, Ti, Ni, Sn, etc.), and the like.

[0178] The catalyst promotes the hydrolysis and dehydration condensation of the fluorine-containing silane compound of the present disclosure, and promotes the formation of the layer formed by the surface treatment agent of the present disclosure.

[0179] Other examples of the other components include tetraethoxysilane, methyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and methyltriacetoxysilane in addition to the above.

[0180] The surface treatment agent of the present disclosure can be impregnated into a porous material, such as a porous ceramic material or a metal fiber, such as steel wool, and formed into a pellet. The pellet can be used, for example, in vacuum deposition.

[0181] 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.

[0182] (Goods) The articles of the present disclosure are described below.

[0183] The article of the present disclosure includes a substrate and a layer (surface treatment layer) formed on the surface of the substrate from the composition and / or surface treatment agent of the present disclosure. In one embodiment, the article of the present disclosure includes a substrate and a layer formed on the surface of the substrate from the composition of the present disclosure. In another embodiment, the article of the present disclosure includes a substrate and a layer formed on the surface of the substrate from the surface treatment agent of the present disclosure.

[0184] 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 general 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.

[0185] For example, when the article to be manufactured is an optical member, the material constituting the surface of the substrate may be a material for optical members, such as glass or transparent plastic. When the article to be manufactured is an optical member, the surface (outermost layer) of the substrate may have some layer (or film), such as a hard coat layer or an anti-reflection layer. The anti-reflection layer may be either a single-layer anti-reflection layer or a multi-layer anti-reflection layer. Examples of inorganic substances that can be used for the anti-reflection layer include SiO2, SiO, ZrO2, TiO2, TiO, Ti2O3, Ti2O5, Al2O3, Ta2O5, Ta3O5, Nb2O5, HfO2, Si3N4, CeO2, MgO, Y2O3, SnO2, MgF2, and WO3. These inorganic substances may be used alone or in combination of two or more of them (for example, as a mixture). When a multi-layer anti-reflection 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 part for a touch panel, a transparent electrode, for example, a thin film using indium tin oxide (ITO) or indium zinc oxide, may be provided on a part of the surface of the substrate (glass). In addition, 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.

[0186] 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 according to the application and specific specifications of the product to be manufactured.

[0187] In one embodiment, the substrate may be made of a material that originally has hydroxyl groups at least on its surface. Examples of such materials include glass, metals (particularly base metals), ceramics, semiconductors, etc., on whose surfaces natural oxide films or thermal oxide films are formed. Alternatively, in cases where the substrate has insufficient hydroxyl groups, such as resins, or where the substrate does not originally have hydroxyl groups, the substrate may be subjected to some pretreatment to introduce or increase the number of hydroxyl groups on the substrate surface. Examples of such pretreatment 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 suitably used to clean the substrate surface (remove foreign matter, etc.). Another example of such pretreatment is a method in which an interface adsorbent having a carbon-carbon unsaturated bond group is formed in advance in the form of a monomolecular film on the substrate surface by the LB method (Langmuir-Blodgett method) or chemical adsorption method, etc., and then the unsaturated bond is cleaved in an atmosphere containing oxygen, nitrogen, etc.

[0188] In another embodiment, the substrate may be one in which at least the surface portion is made of a material containing another reactive group, such as a silicone compound having one or more Si-H groups, or an alkoxysilane.

[0189] In a preferred embodiment, the substrate is glass, preferably sapphire glass, soda-lime glass, alkali aluminosilicate glass, borosilicate glass, alkali-free glass, crystal glass, or quartz glass, more preferably chemically strengthened soda-lime glass, chemically strengthened alkali aluminosilicate glass, or chemically bonded borosilicate glass.

[0190] 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.

[0191] 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 the substrate so as to coat the surface. The coating method is not particularly limited. For example, a wet coating method and a dry coating method can be used.

[0192] Examples of wet coating techniques include dip coating, spin coating, flow coating, spray coating, roll coating, gravure coating and similar techniques.

[0193] Examples of dry coating methods include deposition (usually vacuum deposition), sputtering, CVD, and similar methods. Specific examples of deposition methods (usually vacuum deposition) include resistance heating, electron beam, high frequency heating such as with microwaves, ion beam, and similar methods. Specific examples of CVD methods include plasma-CVD, optical CVD, thermal CVD, and similar methods.

[0194] Furthermore, coating by atmospheric pressure plasma method is also possible.

[0195] 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., C6F 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 (perfluoroalkyl groups and alkyl groups may be linear or branched) such as perfluorobutyl ethyl ether (C4F9OC2H5) (e.g., Novec (trademark) 7200 manufactured by Sumitomo 3M Limited), perfluorohexyl methyl ether (C2F5CF(OCH3)C3F7) (e.g., Novec (trademark) 7300 manufactured by Sumitomo 3M Limited), or CF3CH2OCF2CHF2 (e.g., Asahiklin (registered trademark) AE-3000 manufactured by Asahi Glass Co., Ltd.). These solvents can be used alone or as a mixture of two or more kinds. Among them, hydrofluoroethers are preferred, and perfluorobutyl methyl ether (C4F9OCH3) and / or perfluorobutyl ethyl ether (C4F9OC2H5) are particularly preferred.

[0196] 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.

[0197] The layer formation of the surface treatment agent is preferably carried out so that the surface treatment agent of the present disclosure is present together with a catalyst for hydrolysis and dehydration condensation in the layer. Conveniently, in the case of the 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 the dry coating method, the surface treatment agent of the present disclosure to which the catalyst has been added may be directly subjected to deposition (usually vacuum deposition) treatment, or a metal porous body such as iron or copper may be subjected to deposition (usually vacuum deposition) treatment using a pellet-shaped material impregnated with the surface treatment agent of the present disclosure to which the catalyst has been added.

[0198] The catalyst may be any suitable acid or base. Examples of the acid catalyst include acetic acid, formic acid, and trifluoroacetic acid. Examples of the base catalyst include ammonia and organic amines.

[0199] The surface treatment layer included in the article of the present disclosure has both high abrasion resistance.In addition to high abrasion resistance, the surface treatment layer may have water repellency, oil repellency, antifouling properties (for example, preventing adhesion of dirt such as fingerprints), waterproof properties (preventing water from penetrating into electronic components, etc.), surface slipperiness (or lubricity, for example, wiping off dirt such as fingerprints, and excellent tactile sensation against fingers), chemical resistance, etc., depending on the composition of the surface treatment agent used, and may be suitably used as a functional thin film.

[0200] Therefore, the present disclosure further relates to an optical material having the above-mentioned surface treatment layer as the outermost layer.

[0201] Preferred examples of the optical material include optical materials relating 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 electroluminescence displays, inorganic thin-film electroluminescence dot matrix displays, rear projection displays, vacuum fluorescent displays (VFDs), field emission displays (FEDs), and other displays, protective plates for such displays, or displays whose surfaces have been treated with an anti-reflection film.

[0202] The article of the present disclosure may be, but is not limited to, an optical member. Examples of optical members include lenses for glasses, front protection plates, anti-reflection plates, polarizing plates, and anti-glare plates for displays such as PDPs and LCDs, 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.

[0203] The article of the present disclosure may also be a medical device or medical material.

[0204] The thickness of the layer is not particularly limited. In the case of an optical member, the thickness of the layer is preferably in the range of 1 to 50 nm, 1 to 30 nm, and more preferably 1 to 15 nm, from the viewpoints of optical performance, abrasion resistance, and antifouling properties.

[0205] The article of the present disclosure has been described above in detail. Note that the article of the present disclosure and the method for manufacturing the article are not limited to those exemplified above. EXAMPLES

[0206] The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto. In these examples, the order of the repeating units constituting the fluoropolyether is arbitrary, and the chemical formula shown below shows the average composition.

[0207] (Synthesis Example 1) In a 100 mL four-neck flask equipped with a reflux condenser, thermometer, and stirrer, add 100 mL of CF3O (CF2CF2O) 26 (CF2O) 2620 g of a perfluoropolyether modified allyloxy compound represented by CF2CH2OCH2CH=CH2 (note that the mixture also contains compounds containing a small amount of repeating units of (CF2CF2CF2O) and / or (CF2CF2CF2CF2O), but these are not considered because they are in very small amounts) was charged, and stirred at 5°C for 30 minutes under a nitrogen stream. Next, 0.094 mL of a xylene solution containing 2% Pt complex of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane was added, and the mixture was heated to 60°C and stirred at this temperature for 5 hours. The reaction mixture was cooled to room temperature, and then volatiles were distilled off under reduced pressure. This mixture was dissolved in 5 g of 1,3-bis(trifluoromethyl)benzene and charged into a short column packed with silica gel, and then 40 g of 1,3-bis(trifluoromethyl)benzene was passed through as an eluent. The eluent was concentrated to obtain 8 g of a perfluoropolyether group-containing allyl compound (B1) having an allyl group at the end and represented by the following formula. Perfluoropolyether group-containing allyl compound (B1): CF3O(CF2CF2O) 26 (CF2O) 26 CF2CH2OCH=CHCH3

[0208] (Synthesis Example 2) In a 100 mL four-neck flask equipped with a reflux condenser, thermometer, and stirrer, add 10 mL of CF3CF2CF2O (CF2CF2CF2O) with average composition 20 20g of perfluoropolyether modified allyloxy represented by CF2CF2CH2OCH2CH=CH2, 20g of 1,3-bis(trifluoromethyl)benzene, 0.06g of triacetoxymethylsilane, and 1.36g of trichlorosilane were charged and stirred at 5°C for 30 minutes under a nitrogen stream. Then, 0.094ml of a xylene solution containing 2% of Pt complex of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane was added, and the mixture was heated to 60°C and stirred at this temperature for 5 hours. Then, volatile matter was distilled off under reduced pressure to obtain 19g of perfluoropolyether group-containing silane compound (A1) of the following formula having trichlorosilane at the end. Perfluoropolyether group-containing silane compound (A1): CF3CF2CF2O(CF2CF2CF2O) 20 CF2CF2CH2OCH2CH2CH2SiCl3

[0209] In a 100mL four-neck flask equipped with a reflux condenser, a thermometer and a stirrer, 19g of the perfluoropolyether group-containing trichlorosilane compound (A1) having trichlorosilane at the end and 20g of 1,3-bis(trifluoromethyl)benzene were charged and stirred for 30 minutes at 5°C under a nitrogen stream. Then, 26.4mL of a diethyl ether solution containing 0.7mol / L of allylmagnesium bromide was added, and the temperature was raised to room temperature and stirred at this temperature for 10 hours. Then, the mixture was cooled to 5°C, 5mL of methanol was added, and the mixture was heated to room temperature and insoluble matter was filtered. Then, the volatile matter was distilled off under reduced pressure, and the non-volatile matter was diluted with perfluorohexane, and a washing operation with methanol was performed three times in a separatory funnel (more specifically, an operation of maintaining fluoro-based compounds in the perfluorohexane phase (fluorous phase) and separating and removing non-fluoro-based compounds in the methanol phase (organic phase)). Subsequently, the volatile matter was distilled off under reduced pressure to obtain 20 g of the following perfluoropolyether group-containing allyl compound (A2) having an allyl group at the terminal. Perfluoropolyether group-containing allyl compound (A2): CF3CF2CF2O(CF2CF2CF2O) 20 CF2CF2CH2OCH2CH2CH2Si(CH2CH=CH2)3

[0210] In a 100mL four-neck flask equipped with a reflux condenser, a thermometer, and a stirrer, 15g of the perfluoropolyether group-containing allyl compound (A2) having an allyl group at the end, 15g of 1,3-bis(trifluoromethyl)benzene, 0.05g of triacetoxymethylsilane, and 3.15g of trichlorosilane were charged and stirred at 5°C for 30 minutes under a nitrogen stream. Then, 0.141ml of a xylene solution containing 2% of a Pt complex of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane was added, and the mixture was heated to 60°C and stirred at this temperature for 5 hours. Then, volatile matter was distilled off under reduced pressure to obtain 16g of the following perfluoropolyether group-containing trichlorosilane compound (A3) having trichlorosilane at the end. Perfluoropolyether group-containing trichlorosilane compounds (A3): CF3CF2CF2O(CF2CF2CF2O) 20 CF2CF2CH2OCH2CH2CH2Si(CH2CH2CH2SiCl3)3

[0211] In a 100mL four-neck flask equipped with a reflux condenser, a thermometer, and a stirrer, 16g of the perfluoropolyether group-containing trichlorosilane compound (A3) having trichlorosilane at the end and 15g of 1,3-bis(trifluoromethyl)benzene were added and stirred at 50°C for 30 minutes under a nitrogen stream. Then, a mixed solution of 0.78g of methanol and 36g of trimethyl orthoformate was added, and the temperature was raised to 65°C and stirred at this temperature for 3 hours. Then, volatile matter was distilled off under reduced pressure to obtain 17g of the following perfluoropolyether group-containing silane compound (A4) having trimethylsilyl at the end. Perfluoropolyether group-containing silane compounds (A4): CF3CF2CF2O(CF2CF2CF2O) 20 CF2CF2CH2OCH2CH2CH2Si[CH2CH2CH2Si(OCH3)3]3

[0212] (Examples 1 to 6 and Comparative Example 1) A composition was prepared by mixing the compound (B1) obtained in Synthesis Example 1 and the compound (A4) obtained in Synthesis Example 2 so that the ratio of the compound (B1) was the value shown in Table 1. In the composition, the ratio (mol %) of the compound (B1) was R Si and R B1 R for the sum of B1 This corresponds to a percentage of

[0213] The above composition was dissolved in hydrofluoroether (Novec HFE7200, manufactured by 3M) so that the concentration (total concentration of compound (B1) and compound (A4)) was 20 mass % to prepare a surface treatment agent.

[0214] The surface treatment agent prepared above was vacuum-deposited on chemically strengthened glass (Corning "Gorilla" glass, thickness 0.7 mm). The vacuum deposition treatment conditions were a pressure of 3.0 × 10 -3 First, silicon dioxide was deposited on the surface of the chemically strengthened glass to a thickness of 7 nm by electron beam deposition to form a silicon dioxide film, and then 2 mg of a surface treatment agent (i.e., a total of 0.4 mg of compound (B1) and compound (A4)) was deposited per piece of chemically strengthened glass (55 mm x 100 mm). The chemically strengthened glass with the deposited film was then left to stand for 24 hours in an atmosphere at a temperature of 20°C and a humidity of 65%. As a result, the deposited film hardened to form a surface treatment layer.

[0215] The static contact angle of water was measured for the surface treatment layers formed on the substrate surfaces in the above examples and comparative examples. The static contact angle of water was measured using a contact angle measuring device (manufactured by Kyowa Interface Science Co., Ltd.) with 1 μL of water. First, as an initial evaluation, the static contact angle of water was measured after the formation of the surface treatment layer without touching the surface (zero number of frictions). Then, as an evaluation of friction durability, a steel wool friction durability evaluation was performed. Specifically, the substrate on which the surface treatment layer was formed was placed horizontally, and steel wool (number #0000, dimensions 5mm x 10mm x 10mm) was brought into contact with the exposed upper surface of the surface treatment layer, and a load of 1,000gf was applied thereon, and then the steel wool was moved back and forth at a speed of 140mm / sec while the load was applied. The static contact angle of water (degrees) was measured every 1,000 reciprocations, and the maximum number of reciprocations at which the measured contact angle maintained 100 degrees was used as an index of wear durability. The results are shown in Tables 1 and 2.

[0216] [Table 1]

[0217] [Table 2]

[0218] Examples 1 to 6 are examples of the present disclosure, and it was confirmed that the films obtained from these compositions had good abrasion resistance. Comparative Example 1 is an example that does not contain the compound (B). Although the initial water contact angle was good, the abrasion resistance was inferior to those of Examples 1-6. [Industrial Applicability]

[0219] 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. A silane compound (A) having a fluoropolyether group; Compound (B) Having a Fluoropolyether Group and an Allyl Ether Group and The compound (B) is represented by the following formula (3), (4) or (5): R Ｆ１ α -X Ａ -[AR Ｂ１ δ R Ｂ２ ３－δ ] β (3) [R Ｂ１ δ R Ｂ２ ３－δ A] γ -X Ａ -R Ｆ２ -X Ａ -[AR Ｂ１ δ R Ｂ２ ３－δ ] γ (4) R Ｓｉ γ -X Ａ -R Ｆ２ -X Ａ -[AR Ｂ１ δ R Ｂ２ ３－δ ] γ (5) [In the formula: Each A is independently a C atom or a Si atom; R Ｆ１ Each independently represents Rf １ -R Ｆ -O ｑ - and R Ｆ２ is -Rf ２ ｐ -R Ｆ -O ｑ - and Rf １ each independently represents a C which may be substituted by 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; R Ｆ are each independently a divalent fluoropolyether group; p is 0 or 1; Each q is independently 0 or 1; R Ｂ１ is -R Ｂ３ -O-CH=CH-CH ３ and R Ｂ２ are each independently -R Ｂ３ -O-CH ２ CH ２ CH ２ -SiR Ｂ４ ε R Ｂ５ ３－ε and a hydrogen atom; R Ｂ３ each independently represents a single bond or C １－２０ is an alkylene group; R Ｂ４ are each independently a hydroxyl group or a hydrolyzable group; R Ｂ５ are each independently a hydrogen atom or a monovalent organic group; R Ｓｉ each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; In formula (5), 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 each independently represents a single bond or a divalent to decavalent organic group; α is an integer from 1 to 9; β is an integer from 1 to 9; Each γ is independently an integer from 1 to 9; Each δ is independently an integer of 1 to 3. Each ε is independently an integer from 1 to 3. A composition comprising at least one compound represented by the formula (A) (wherein compound (A) and compound (B) are different).

2. The silane compound (A) having a fluoropolyether group is represented by the formula (1) or (2): 【Chemistry 1】 [In the formula: R Ｆ１ Each independently represents Rf １ -R Ｆ -O ｑ - and R Ｆ２ is -Rf ２ ｐ -R Ｆ -O ｑ - and Rf １ each independently represents a C which may be substituted by 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; R Ｆ are each independently a divalent fluoropolyether group; p is 0 or 1; Each q is independently 0 or 1; R Ｓｉ each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; In each of formula (1) and formula (2), at least one R Ｓｉ is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded; In each of formula (1) and formula (2), R Ｓｉ does not contain an allyl ether group; X Ａ each independently represents a single bond or a divalent to decavalent organic group; α is an integer from 1 to 9; β is an integer from 1 to 9; Each γ is independently an integer from 1 to 9. The composition of claim 1 , comprising at least one compound represented by:

3. R contained in the composition Ｓｉ and R Ｂ１ R contained in the composition relative to the sum of Ｂ１ The composition according to claim 1, wherein the proportion of is 25 mol % or less.

4. The silane compound (A) is represented by the formula (1a): R Ｆ１ -X Ａ -R Ｓｉ (1a) [In the formula: R Ｆ１ Each independently represents Rf １ -R Ｆ -O ｑ - and Rf １ each independently represents a C which may be substituted by one or more fluorine atoms; １－１６ is an alkyl group; R Ｆ are each independently a divalent fluoropolyether group; Each q is independently 0 or 1; R Ｓｉ each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; In formula (1), at least one R Ｓｉ is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded; In formula (1), R Ｓｉ does not contain an allyl ether group; X Ａ are each independently a single bond or a divalent to decavalent organic group. In the above, X Ａ is 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 -, o-, m- or p-phenylene group, preferably -(CH ２ ) ｓ５ - and s5 is an integer from 1 to 20, preferably an integer from 1 to 6, more preferably an integer from 1 to 3, even more preferably 1 or 2; X ５１ is -(X ５２ ) ｌ５ - represents X ５２ each independently represents -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 - 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 is independently an integer of 1 to 100, preferably an integer of 1 to 20; n5 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 from 1 to 10, preferably an integer from 1 to 5, more preferably an integer from 1 to 3; p5 is 0 or 1; q5 is 0 or 1; Here, at least one of p5 and q5 is 1, and the order of the repeating units enclosed in parentheses with p5 or q5 is arbitrary. is a group represented by R Ｓｉ is expressed by the following formula (S3): -SiR ａ１ ｋ１ R ｂ１ ｌ１ R ｃ１ ｍ１ (S3) [In the formula, R ａ１ Each independently represents -Z １ -SiR ２２ ｑ１ R ２３ ｒ１ represents; Z １ each independently represents an oxygen atom or a divalent organic group; １ The structure written as ２２ ｑ１ R ２３ ｒ１ ) to R ２２ each independently represents a hydroxyl group or a hydrolyzable group; R ２３ each independently represents a hydrogen atom or a monovalent organic group; q1 is (SiR ２２ ｑ１ R ２３ ｒ１ ) units are each independently an integer from 1 to 3; R ｂ１ each independently represents a hydroxyl group or a hydrolyzable group; R ｃ１ each independently represents a hydrogen atom or a monovalent organic group; Each k1 is independently an integer from 0 to 3, each l1 is independently an integer from 0 to 3, and each m1 is independently an integer from 0 to 3, and the sum of k1, l1 and m1 is (SiR ａ１ ｋ１ R ｂ１ ｌ１ R ｃ１ ｍ１ ) units, it is 3. The compound is a group represented by The compound (B) is represented by the formula (3): R Ｆ１ α -X Ａ -[AR Ｂ１ δ R Ｂ２ ３－δ ] β (3) [In the formula: Each A is independently a C atom or a Si atom; R Ｆ１ Each independently represents Rf １ -R Ｆ -O ｑ - and Rf １ each independently represents a C which may be substituted by one or more fluorine atoms; １－１６ is an alkyl group; R Ｆ are each independently a divalent fluoropolyether group; Each q is independently 0 or 1; R Ｂ１ is -R Ｂ３ -O-CH=CH-CH ３ and R Ｂ２ are each independently -R Ｂ３ -O-CH ２ CH ２ CH ２ -SiR Ｂ４ ε R Ｂ５ ３－ε and a hydrogen atom; R Ｂ３ each independently represents a single bond or C １－２０ is an alkylene group; R Ｂ４ are each independently a hydroxyl group or a hydrolyzable group; R Ｂ５ are each independently a hydrogen atom or a monovalent organic group; R Ｓｉ each independently represents a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent group containing a Si atom to which a monovalent organic group is bonded; X Ａ each independently represents a single bond or a divalent to decavalent organic group; α is an integer from 1 to 9; β is an integer from 1 to 9; Each γ is independently an integer from 1 to 9. The composition of claim 1 , comprising a compound represented by the formula:

5. A surface treatment agent comprising the composition according to any one of claims 1 to 4.

6. The surface treatment agent according to claim 5 , further comprising one or more components selected from fluorine-containing oils and silicone oils.

7. The surface treatment agent according to claim 5, which is used as an antifouling coating agent or a waterproof coating agent.

8. An article comprising a substrate and a layer formed on a surface of the substrate from the composition according to any one of claims 1 to 4.

9. An article comprising a substrate and a layer formed on the surface of the substrate from the surface treatment agent according to claim 5.

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