Fluoropolyether group-containing compound

Abstract

To provide a fluorine-containing compound having excellent solubility in a solvent.SOLUTION: There is provided a fluorine-containing compound represented by the following formula (1) [wherein, R1 is -O-, -S- or -O-P(=O)(OR2)-, R2 each independently is a hydrocarbon group, RA each independently is a group containing -OCO-CR3=CH2, R3 each independently is a hydrogen atom or a hydrocarbon group, RB is a monovalent or divalent group containing a fluoropolyether group, RC each independently is a hydrogen atom or a monovalent group and α is 1 or 2.]SELECTED DRAWING: None

Description

[Technical field]

[0001] The present disclosure relates to fluoropolyether group-containing compounds. [Background technology]

[0002] It is known that certain fluorine-containing compounds, when used in the 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 fluorine-containing 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, and building materials (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-160902 A Summary of the Invention [Problem to be solved by the invention]

[0004] The object of the present invention is to provide a fluorine-containing compound having excellent solubility in a solvent. [Means for solving the problem]

[0005] The present disclosure includes the following aspects. [1] The following formula (1): [ka] [In formula: R 1 -O-, -S-, or -OP(=O)(OR 2 )-and R 2 are each independently a hydrocarbon group; R A are each independently -OCO-CR 3 =CH 2 is a group containing R 3 are each independently a hydrogen atom or a hydrocarbon group, R B is a monovalent or divalent group containing a fluoropolyether group, R C are each independently a hydrogen atom or a monovalent group, α is 1 or 2. A fluorine-containing compound represented by the formula: [2] R 1 is O or S. [3] R 1 is S. [4] R A are each independently -X A1 (-X A2 (R Ac ) A2 ) A1 and X A1 is a divalent to pentavalent organic group, X A2 each independently represents a single bond or a divalent to pentavalent organic group, A1 is X A1 is the valence of -1, A2 is X A2 is the valence of -1, R Ac are each independently -OCO-CR 3 =CH 2 and R 3 are each independently a hydrogen atom or a hydrocarbon group; The fluorine-containing compound according to any one of the above [1] to [3]. [5] X A1 -R A11 -R A12 - or -R A13 (-R A12 ) 2 and R A11 is C 1-20 Alkylene group, -(CH 2 ) z1 -O-(CH2 ) z2 - (wherein z1 is an integer from 0 to 10, and z2 is an integer from 0 to 10), or -(CH 2 ) z3 -Phenylene-(CH 2 ) z4 - (wherein z3 is an integer from 0 to 10, and z4 is an integer from 0 to 10), R A12 is -O-, -CO-, or -NR 11 - and R 11 is a hydrogen atom or a hydrocarbon group, R A13 is a trivalent C 1-10 Hydrocarbon group or trivalent C 1-10 A group containing one or more O in the main chain of a hydrocarbon group. The fluorine-containing compound according to the above item [4]. [6] X A2 -X A3 (-X A4 ) A3 and X A3 represents a single bond or a divalent or trivalent organic group, A3 is X A3 is the valence of -1, X A4 are each independently a divalent to trivalent organic group; The fluorine-containing compound according to the above [4] or [5]. [7] X A3 is a single bond, -R A31 -R A32 - or -R A33 (-R A32 ) 2 and R A31 is C 1-20 Alkylene group, -(CH 2 ) z5 -O-(CH 2 ) z6 - (wherein z5 is an integer of 0 to 10, and z6 is an integer of 0 to 10), or -(CH 2 ) z7 -Phenylene-(CH 2 ) z8- (wherein z7 is an integer from 0 to 10, and z8 is an integer from 0 to 10), R A32 is -O-, -CO-, or -NR 12 - and R 12 is a hydrogen atom or a hydrocarbon group, R A33 is a trivalent hydrocarbon group or a trivalent C 1-10 A group containing one or more O in the main chain of a hydrocarbon group. The fluorine-containing compound according to [6] above. [8] X A4 is -CO-NH-C(R 13 ) 3-a4 (R 14 ) a4 and R 13 is a hydrogen atom or C 1-6 is an alkyl group, R 14 are each independently 1-6 is an alkylene group, a4 is 1 or 2; The fluorine-containing compound according to the above [6] or [7]. [9] R B -X B1 -R F1 , or -X B1 -R F2 -X B1 - and R F1 is a monovalent fluoropolyether group, R F2 is a divalent fluoropolyether group, X B1 are each independently a single bond or a divalent organic group; The fluorine-containing compound according to any one of the above [1] to [8].

[10] R F1 is Rf 1 -R F -O q - and R F2 is -Rf 2 p -R F-O q - and Rf 1 C may be substituted with 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; The fluorine-containing compound according to [9] above.

[11] R F are each independently represented by the formula: -(OC 6 F 12 ) a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 R Fa 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - [In formula: R Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom, a, b, c, d, e, and f each independently represent an integer of 0 to 200, the sum of a, b, c, d, e, and f is 1 or more, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula. The fluorine-containing compound according to the above item

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

[12] R Fa is a fluorine atom.

[13] R Fare each independently represented by the following formula (f1), (f2), (f3), (f4), (f5) or (f6): -(OC 3 F 6 ) d -(OC 2 F 4 ) e - (f1) [In the formula, d is an integer of 1 to 200, and e is 0 or 1.] -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - (f2) [In the formula, c and d each independently represent an integer of 0 to 30; e and f each independently represent an integer of 1 to 200; The sum of c, d, e, and f is an integer of 10 to 200; The order of occurrence of each repeat unit enclosed in parentheses with the subscript c, d, e, or f is arbitrary in the formula. -(R 6 -R 7 ) g -R 9 - (f3) [In the formula, R 6 is OCF 2 Or O.C. 2 F 4 and; R 7 is O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups selected from these groups; R 9 is a single bond or OCF2 , O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups selected from these groups; g is an integer from 2 to 100. -(R 6 -R 7 ) g -R r -(R 7’ -R 6’ ) g’ - (f4) [In the formula, R 6 is OCF 2 Or O.C. 2 F 4 and R 7 is O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups independently selected from these groups; R 6’ is OCF 2 Or O.C. 2 F 4 and R 7’ is O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups independently selected from these groups; g is an integer from 2 to 100; g' is an integer from 2 to 100, R r teeth, [ka] (In the formula, * indicates the bond position.) .]; -(OC 6 F 12 ) a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC 6 F 12 ) a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] The fluorine-containing compound according to the above item

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

[14] Rf 1 are each independently 1-16 is a perfluoroalkyl group, Rf 2 are each independently 1-6 is a perfluoroalkylene group. The fluorine-containing compound according to any one of the above items

[10] to

[13] .

[15] X B1 are each independently represented by the following formula: -(CX 121 X 122 ) b1 -(X B1a ) b2 -(CX 123 X 124 ) b3 - [In the formula, X 121 ~X 124 are independently H, C 1-6 an alkyl group or a halogen; X B1a is -C(=O)NH-, -NHC(=O)-, -O-, -C(=O)O-, -OC(=O)-, -OC(=O)O-, or -NHC(=O)NH-, b1 is an integer from 0 to 10, b2 is 0 or 1, b3 is an integer from 0 to 10, and the sum of b1, b2, and b3 is at least 1. The fluorine-containing compound according to any one of the above [9] to

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

[16] X B1 are each independently -O-(CH 2 ) m11 - and m11 is an integer from 1 to 6. The fluorine-containing compound according to any one of the above [9] to

[15] .

[17] The fluorine-containing compound according to any one of the above [1] to

[16] , wherein α is 1.

[18] R C -R 1 -R AThe fluorine-containing compound according to any one of the above [1] to

[17] ,

[19] A surface treatment agent comprising one or more compounds according to any one of the above [1] to

[18] .

[20] The surface treatment agent according to the above

[19] , which is used as an antifouling coating agent or a waterproof coating agent.

[21] An article comprising a substrate and a layer formed on the surface of the substrate using the surface treatment agent according to

[19] or

[20] above.

[22] The article according to

[21] above, wherein the article is an optical component.

[23] Formula (1e): [ka] R 1 -O-, -S-, or -OP(=O)(OR 2 )-and R 2 are each independently a hydrocarbon group; R OH -R A11 -OH, -R A13 (OH) 2 , or -R A14 (-R A13 (OH) 2 ) 2 and R A11 is C 1-20 Alkylene group, -(CH 2 ) z1 -O-(CH 2 ) z2 - (wherein z1 is an integer from 0 to 10, and z2 is an integer from 0 to 10), or -(CH 2 ) z3 -Phenylene-(CH 2 ) z4 - (wherein z3 is an integer from 0 to 10, and z4 is an integer from 0 to 10), R A13 is a trivalent C 1-10 Hydrocarbon group or trivalent C 1-10 A group containing one or more O in the main chain of a hydrocarbon group, R A14is a trivalent C 1-10 Hydrocarbon group or trivalent C 1-10 A group containing one or more O in the main chain of a hydrocarbon group, R B is a monovalent or divalent group containing a fluoropolyether group, R Ce are each independently a hydrogen atom or a monovalent group, α is 1 or 2. A compound represented by the formula: Effect of the Invention

[0006] According to the present disclosure, it is possible to provide a fluorine-containing compound having excellent solubility in a solvent. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] As used herein, the term "organic group" refers to a monovalent group containing carbon. The monovalent organic group may be a hydrocarbon group or a derivative thereof, unless otherwise specified. The derivative of a hydrocarbon group refers to a group having one or more N, O, S, Si, amide, sulfonyl, sulfoxide, siloxane, carbonyl, carbonyloxy, etc. at the end or in the molecular chain of the hydrocarbon group. In addition, the term "divalent organic group" refers to a divalent group containing carbon. Such a divalent organic group is not particularly limited, but includes a divalent group obtained by further removing one hydrogen atom from an organic group.

[0008] As used herein, the term "hydrocarbon group" refers to a group containing carbon and hydrogen, which is a group obtained by removing one hydrogen atom from a hydrocarbon. Such a hydrocarbon group includes, but is not limited to, C 1-20 Examples of the hydrocarbon group include an aliphatic hydrocarbon group and an aromatic hydrocarbon group. The hydrocarbon group may be substituted with one or more substituents. The "aliphatic hydrocarbon group" may be linear, branched, or cyclic, and may be saturated or unsaturated. The hydrocarbon group may contain one or more ring structures.

[0009] As used herein, examples of the substituent of the "hydrocarbon group" include, but are not limited to, a halogen atom, a C 1-6 Alkyl group, C 2-6 Alkenyl group, C 2-6 Alkynyl group, C 3-10 Cycloalkyl groups, C 3-10 Unsaturated cycloalkyl groups, 5-10 membered heterocyclyl groups, 5-10 membered unsaturated heterocyclyl groups, C 6-10 Examples of the alkyl group include one or more groups selected from an aryl group and a 5- to 10-membered heteroaryl group.

[0010] The fluorine-containing compound of the present disclosure will be described below.

[0011] The present disclosure relates to a compound represented by the following formula (1): [ka] [In formula: R 1 -O-, -S-, or -OP(=O)(OR 2 )-and R 2 are each independently a hydrocarbon group; R A are each independently -OCO-CR 3 =CH 2 is a group containing R 3 are each independently a hydrogen atom or a hydrocarbon group, R B is a monovalent or divalent group containing a fluoropolyether group, R C are each independently a hydrogen atom or a monovalent group, α is 1 or 2. The present invention provides a fluorine-containing compound represented by the formula:

[0012] The compound of the present disclosure has excellent solubility in solvents, for example, ketone-based solvents, ester-based solvents, and ether-based solvents, and is particularly excellent in solubility in ketone-based solvents.

[0013] R 1 -O-, -S-, or -OP(=O)(OR 2 This improves the solubility of the fluorine-containing compound represented by formula (1).

[0014] R 2 are each independently a hydrocarbon group. The hydrocarbon group is preferably 1-6 It is an alkyl group. 1-6 The alkyl group may be straight-chain or branched-chain, and is preferably straight-chain. 1-6 The alkyl group is preferably C 1-4 It is an alkyl group, and more preferably a methyl group.

[0015] In one embodiment, R 1 is O or S, preferably S. 1 When is O or S, particularly S, the solubility of the fluorine-containing compound represented by formula (1) is improved.

[0016] R A are each independently -OCO-CR 3 =CH 2 R is a group containing 3 are each independently a hydrogen atom or a hydrocarbon group.

[0017] The hydrocarbon group is preferably C 1-6 It is an alkyl group. 1-6 The alkyl group may be straight-chain or branched-chain, and is preferably straight-chain. 1-6 The alkyl group is preferably C 1-4 It is an alkyl group, and more preferably a methyl group.

[0018] In one embodiment, R 3 is a hydrogen atom.

[0019] In another embodiment, R 3 is a hydrocarbon group, preferably C 1-6 It is preferably an alkyl group, more preferably a methyl group.

[0020] In one embodiment, R A are each independently -X A1 (-X A2 (R Ac ) A2 ) A1 It is.

[0021] X A1 A1 is a divalent to pentavalent organic group. X A1 The valence of is -1.

[0022] X A1 is preferably -R A11 -R A12 -, -R A13 (-R A12 ) 2 , or -R A14 (-R A13 (-R A12 ) 2 ) 2 It is.

[0023] In one embodiment, X A1 -R A11 -R A12 -It is.

[0024] In another embodiment, X A1 -R A13 (-R A12 ) 2 It is.

[0025] In another embodiment, X A1 -R A14 (-R A13 (-R A12 ) 2 ) 2 It is.

[0026] R A11 is C 1-20 Alkylene group, -(CH 2 )z1 -O-(CH 2 ) z2 - (wherein z1 is an integer of 0 to 10, preferably an integer of 0 to 6, and z2 is an integer of 0 to 10, preferably an integer of 0 to 6), or -(CH 2 ) z3 -Phenylene-(CH 2 ) z4 - (wherein z3 is an integer of 0 to 10, preferably an integer of 0 to 6, and z4 is an integer of 0 to 10, preferably an integer of 0 to 6).

[0027] Above C 1-20 The alkylene group may be linear or branched, and is preferably linear. 1-20 The alkyl group is preferably C 2-16 Alkyl groups, such as C 4-16 Alkyl group, C 4-12 Alkyl group, C 6-12 Alkyl group or C 6-10 It may be an alkyl group.

[0028] R A12 is -O-, -CO-, or -NR 11 -It is. A12 is preferably --O--.

[0029] R 11 is a hydrogen atom or a hydrocarbon group. The hydrocarbon group is preferably 1-6 It is an alkyl group. 1-6 The alkyl group may be straight-chain or branched-chain, and is preferably straight-chain. 1-6 The alkyl group is preferably C 1-4 It is an alkyl group, and more preferably a methyl group.

[0030] R A13 is a trivalent C 1-10 Hydrocarbon group or trivalent C 1-10 A group containing one or more O in the main chain of a hydrocarbon group. 1-10 The hydrocarbon group containing one or more O in the main chain is C 1-10It is a group that contains O at the end of a hydrocarbon group or between carbon atoms in the main chain.

[0031] The above trivalent C 1-10 The hydrocarbon group may be linear, branched or cyclic, but is preferably branched. 1-10 The hydrocarbon group is preferably C 3-10 Hydrocarbon radicals, more preferably C 3-8 It is a hydrocarbon group.

[0032] R A13 is preferably C 1-10 It is a hydrocarbon group.

[0033] R A14 is a trivalent C 1-10 Hydrocarbon group or trivalent C 1-10 A group containing one or more O in the main chain of a hydrocarbon group. 1-10 The hydrocarbon group containing one or more O in the main chain is C 1-10 It is a group that contains O at the end of a hydrocarbon group or between carbon atoms in the main chain.

[0034] The above trivalent C 1-10 The hydrocarbon group may be linear, branched or cyclic, but is preferably branched. 1-10 The hydrocarbon group is preferably C 3-10 Hydrocarbon radicals, more preferably C 3-8 It is a hydrocarbon group.

[0035] R A14 is preferably C 1-10 R is a hydrocarbon group. A13 C with O attached to both ends 1-10 Hydrocarbons are -C((CH 2 ) n O-) 2 (wherein each n is independently an integer of 0 to 9, and the total number of n's is 9).

[0036] X A2 are each independently a single bond or a divalent to pentavalent organic group. A2The valence of is -1.

[0037] X A2 is preferably -X A3 (-X A4 ) A3 It is.

[0038] X A3 A3 is a single bond or a divalent or trivalent organic group. X A3 The valence of is -1.

[0039] X A3 is preferably a single bond, -R A31 -R A32 - or -R A33 (-R A32 ) 2 It is.

[0040] R A31 is C 1-20 Alkylene group, -(CH 2 ) z5 -O-(CH 2 ) z6 - (wherein z5 is an integer of 0 to 10, preferably an integer of 0 to 6, and z6 is an integer of 0 to 10, preferably an integer of 0 to 6), or -(CH 2 ) z7 -Phenylene-(CH 2 ) z8 - (wherein z7 is an integer of 0 to 10, preferably an integer of 0 to 6, and z8 is an integer of 0 to 10, preferably an integer of 0 to 6).

[0041] Above C 1-20 The alkylene group may be linear or branched, and is preferably linear. 1-20 The alkyl group is preferably C 2-16 Alkyl groups, such as C 4-16 Alkyl group, C 4-12 Alkyl group, C 6-12 Alkyl group or C 6-10 It may be an alkyl group.

[0042] R A32 is -O-, -CO-, or -NR12 -It is. A32 is preferably --O--.

[0043] R 12 is a hydrogen atom or a hydrocarbon group. The hydrocarbon group is preferably 1-6 It is an alkyl group. 1-6 The alkyl group may be straight-chain or branched-chain, and is preferably straight-chain. 1-6 The alkyl group is preferably C 1-4 It is an alkyl group, and more preferably a methyl group.

[0044] R A33 is a trivalent hydrocarbon group or a trivalent C 1-10 It is a group that contains one or more O in the main chain of a hydrocarbon group.

[0045] The above trivalent C 1-10 The hydrocarbon group may be linear, branched or cyclic, but is preferably branched. 1-10 The hydrocarbon group is preferably C 3-10 Hydrocarbon radicals, more preferably C 3-8 It is a hydrocarbon group.

[0046] R A33 is preferably C 1-10 It is a hydrocarbon group. X A4 are each independently a divalent to trivalent organic group;

[0047] R Ac are each independently -OCO-CR 3 =CH 2 and R 3 are each independently a hydrogen atom or a hydrocarbon group.

[0048] X A4 are each independently a divalent or trivalent organic group.

[0049] X A4 is preferably -CO-NH-C(R 13 )3-a4 (R 14 ) a4 It is.

[0050] R 13 is a hydrogen atom or C 1-6 The above C is an alkyl group. 1-6 The alkyl group may be straight-chain or branched-chain, and is preferably straight-chain. 1-6 The alkyl group is preferably C 1-4 It is an alkyl group, and more preferably a methyl group.

[0051] R 14 are each independently 1-6 The above C is an alkylene group. 1-6 The alkylene group may be linear or branched, and is preferably linear. 1-6 The alkylene group is preferably 1-4 It is an alkylene group, and more preferably a methylene group.

[0052] a4 is 1 or 2.

[0053] In one embodiment, a4 is 1.

[0054] In another embodiment, a4 is 2.

[0055] R B R is a monovalent or divalent group containing a fluoropolyether group. B is preferably -X B1 -R F1 , or -X B1 -R F2 -X B1 -It is.

[0056] R F1 is a monovalent fluoropolyether group, preferably Rf 1 -R F -O q -It is.

[0057] R F2is a divalent fluoropolyether group, preferably -Rf 2 p -R F -O q -It is.

[0058] Rf 1 C may be substituted with one or more fluorine atoms. 1-16 It is an alkyl group.

[0059] 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 C 1-3 is preferably a straight-chain C 1-6 Alkyl groups, especially C 1-3 It is an alkyl group.

[0060] Rf 1 is preferably C substituted by one or more fluorine atoms 1-16 is an alkyl group, more preferably CF 2 HC 1-15 A perfluoroalkylene group, more preferably C 1-16 It is a perfluoroalkyl group.

[0061] Above C 1-16 The 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 Perfluoroalkyl groups, specifically -CF 3 , -CF 2 CF 3 , or CF 2 CF 2 CF 3 It is.

[0062] Rf 2 C may be substituted with one or more fluorine atoms. 1-6 It is an alkylene group.

[0063] 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.

[0064] 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.

[0065] 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 Perfluoroalkylene groups, specifically -CF 2 -, -CF 2 CF 2 - or CF 2 CF 2 CF 2 -It is.

[0066] In the above formula, p is 0 or 1. In one embodiment, p is 0. In another embodiment, p is 1.

[0067] q is 0 or 1. In one embodiment, q is 0. In another embodiment, q is 1.

[0068] R F are each independently a divalent fluoropolyether group.

[0069] R F is preferably -(OC h1 R Fa 2h1 ) h3 -(OC h2 R Fa 2h2-2 ) h4 - [In formula: R Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom, h1 is an integer from 1 to 6, h2 is an integer from 4 to 8; h3 is an integer equal to or greater than 0, h4 is an integer equal to or greater than 0, However, the number of repeating units of h3 and h4 is 1 or more, preferably 2 or more, and more preferably 5 or more, and the order of the repeating units enclosed in parentheses with h3 and h4 is arbitrary in the formula. It may contain a group represented by:

[0070] In one embodiment, R F R can be linear or branched. F is preferably of the formula: -(OC 6 F 12 ) a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 R Fa 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - [In formula: R Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom, a, b, c, d, e and f each independently represent an integer of 0 to 200, and the sum of a, b, c, d, e and f is 1 or more. The order of the repeating units enclosed in parentheses with a, b, c, d, e or f is arbitrary in the formula.] It is a group represented by the following formula:

[0071] R Fa is preferably a hydrogen atom or a fluorine atom, and more preferably a fluorine atom.

[0072] Preferably, a, b, c, d, e and f may each independently be an integer of 0 to 100.

[0073] 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.

[0074] These repeating units may be linear or branched. For example, the repeating unit may be -(OC 6 F 12 )- is -(OCF 2 CF 2 CF 2 CF 2 CF 2 CF 2 )-, -(OCF(CF 3 )CF 2 CF 2 CF 2 CF 2 )-, -(OCF 2 CF(CF 3 )CF 2 CF 2 CF 2 )-, -(OCF 2 CF 2 CF(CF 3 )CF 2 CF 2 )-, -(OCF 2 CF 2 CF2 CF(CF). 3 )CF 2 )-、-(OCF 2 CF 2 CF 2 CF 2 CF(CF). 3 ))-without-(OC 5 F 10 )-は、-(OCF 2 CF 2 CF 2 CF 2 CF 2 )-、-(OCF(CF). 3 )CF 2 CF 2 CF 2 )-、-(OCF 2 CF(CF). 3 )CF 2 CF 2 )-、-(OCF 2 CF 2 CF(CF). 3 )CF 2 )-、-(OCF 2 CF 2 CF 2 CF(CF). 3 ))-without-(OC 4 F 8 )-は、-(OCF 2 CF 2 CF 2 CF 2 )-、-(OCF(CF). 3 )CF 2 CF 2 )-、-(OCF 2 CF(CF). 3 )CF 2 )-、-(OCF 2 CF 2 CF(CF). 3 ))-、-(OC(CF). 3 ) 2 CF 2 )-、-(OCF 2 C(CF). 3 ) 2 )-、-(OCF(CF). 3 )CF(CF 3 ))-、-(OCF(C). 2 F 5 )CF2 )-and (OCF 2 CF(C 2 F 5 ))-. -(OC 3 F 6 )-(i.e., in the above formula, R Fa is a fluorine atom) is -(OCF 2 CF 2 CF 2 )-, -(OCF(CF 3 )CF 2 )-and (OCF 2 CF(CF 3 ))-. -(OC 2 F 4 )- is -(OCF 2 CF 2 )- and (OCF(CF 3 ))-.

[0075] In one embodiment, the repeating unit is linear. By making the repeating unit linear, the surface slip property, friction durability, etc. of the surface treatment layer can be improved.

[0076] In one embodiment, the repeating unit is a branched chain. By making the repeating unit a branched chain, the dynamic friction coefficient of the surface treatment layer can be increased.

[0077] In one embodiment, R F may include a ring structure.

[0078] The ring structure may be a three-, four-, five-, or six-membered ring as described below. [ka] [In the formula, * indicates the bond position.]

[0079] The ring structure may be preferably a four-, five-, or six-membered ring, more preferably a four-, or six-membered ring.

[0080] The repeating unit having a ring structure may preferably be the following unit. [ka] [In the formula, * indicates the bond position.]

[0081] In one embodiment, R F are each independently a group represented by any one of the following formulas (f1) to (f6). -(OC 3 F 6 ) d -(OC 2 F 4 ) e - (f1) [In the formula, d is an integer of 1 to 200, and e is 0 or 1.]; -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - (f2) [In the formula, c and d each independently represent an integer of 0 or more and 30 or less, and e and f each independently represent an integer of 1 or more and 200 or less, The sum of c, d, e, and f is 2 or more, The order of occurrence of each repeat unit enclosed in parentheses with the subscript c, d, e, or f is arbitrary in the formula. -(R 6 -R 7 ) g -R 9 - (f3) [In the formula, R 6 is OCF 2 Or O.C. 2 F 4 and R 7 is O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups independently selected from these groups; R 9 is a single bond or OCF 2 , O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups selected from these groups; g is an integer from 2 to 100; -(R 6 -R 7 ) g -R r -(R 7’ -R 6’ ) g’ - (f4) [In the formula, R 6 is OCF 2 Or O.C. 2 F 4 and R 7 is O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups independently selected from these groups; R 6’ is OCF 2 Or O.C. 2 F 4 and R 7’ is O.C. 2 F 4 , O.C. 3 F6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups independently selected from these groups; g is an integer from 2 to 100; g' is an integer from 2 to 100, R r teeth, [ka] (In the formula, * indicates the bond position.) .]; -(OC 6 F 12 ) a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC 6 F 12 ) a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2 F 4 ) e -(OCF 2 )f - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.]

[0082] 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 one embodiment, e is 1. In another embodiment, e is 0. 3 F 6 ) is preferably (OCF 2 CF 2 CF 2 ), (OCF 2 CF(CF 3 )) or (OCF(CF 3 )CF 2 ), and more preferably, -(OCF 2 CF 2 CF 2 ) d - is a group represented by the formula (f1). 2 F 4 ) is (OCF 2 CF 2 ), or (OCF(CF 3 )), preferably, (OCF 2 CF 2 ) is a group represented by the formula:

[0083] In the above formula (f2), e and f are each independently preferably an integer of 5 or more and 200 or less, more preferably an integer of 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 -(OCF 2 CF 2 CF 2 CF 2 ) c -(OCF 2 CF2 CF 2 ) d -(OCF 2 CF 2 ) e -(OCF 2 ) f In another embodiment, formula (f2) is a group represented by -(OC 2 F 4 ) e -(OCF 2 ) f - may be a group represented by the formula:

[0084] In the above formula (f3), R 6 Preferably, OC 2 F 4 In the above (f3), R 7 Preferably, OC 2 F 4 , O.C. 3 F 6 and O.C. 4 F 8 or a combination of two or three groups independently selected from these groups, more preferably OC 3 F 6 and O.C. 4 F 8 is a group selected from the group consisting of OC 2 F 4 , O.C. 3 F 6 and O.C. 4 F 8 Examples of the combination of two or three groups independently selected from the group consisting of, but not limited to, -OC 2 F 4 O.C. 3 F 6 -, -OC 2 F 4 O.C. 4 F 8 -, -OC 3 F 6 O.C. 2 F 4 -, -OC 3 F 6 O.C. 3 F 6 -, -OC 3 F6 OC 4 F 8 -、 - OC 4 F 8 OC 4 F 8 -、 - OC 4 F 8 OC 3 F 6 -、 - OC 4 F 8 OC 2 F 4 -、 - OC 2 F 4 OC 2 F 4 OC 3 F 6 -、 - OC 2 F 4 OC 2 F 4 OC 4 F 8 -、 - OC 2 F 4 OC 3 F 6 OC 2 F 4 -、 - OC 2 F 4 OC 3 F 6 OC 3 F 6 -、 - OC 2 F 4 OC 4 F 8 OC 2 F 4 -、 - OC 3 F 6 OC 2 F 4 OC 2 F 4 -、 - OC 3 F 6 OC 2 F 4 OC 3 F 6 -、 - OC 3 F 6 OC 3 F 6 OC 2 F 4 -、 and OC 4 F 8 OC 2 F4 O.C. 2 F 4 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), OC 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 may be either linear or branched, and is preferably linear. In this embodiment, the above formula (f3) is preferably -(OC 2 F 4 -OC 3 F 6 ) g - or (OC 2 F 4 -OC 4 F 8 ) g In one embodiment, R 9 is a single bond. In another embodiment, R 9 is OCF 2 , O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups selected from these groups. 9 Preferably, OCF 2 , O.C. 2 F 4 , O.C. 3 F 6 , and O.C. 4 F 8 or a combination of two or three groups selected from these groups, more preferably -OC 2 F 4 O.C. 3 F 6-It is.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] In one embodiment, R F is a group represented by the above formula (f1).

[0089] In one embodiment, R F is a group represented by the above formula (f2).

[0090] In one embodiment, R F is a group represented by the above formula (f3).

[0091] In one embodiment, R F is a group represented by the above formula (f4).

[0092] In one embodiment, R F is a group represented by the above formula (f5).

[0093] In one embodiment, R F is a group represented by the above formula (f6).

[0094] R F In the formula, 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, friction durability, and chemical resistance (e.g., durability against artificial sweat) of the surface treatment layer obtained from this compound are further improved. The smaller the e / f ratio, the more improved the slipperiness and friction durability of the surface treatment layer. On the other hand, by 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.

[0095] In one embodiment, the e / f ratio is preferably 0.2 to 0.95, and more preferably 0.2 to 0.9.

[0096] In one embodiment, from the viewpoint of heat resistance, the e / f ratio is preferably 1.0 or more, and more preferably 1.0 to 2.0.

[0097] In the above fluoropolyether group-containing compound, R F1 and R F2 The number average molecular weight of R 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 19The value is measured by F-NMR.

[0098] In another embodiment, R F1 and R F2 The number average molecular weight may be 500 to 30,000, preferably 1,000 to 20,000, more preferably 2,000 to 15,000, even more preferably 2,000 to 10,000, for example, 3,000 to 6,000.

[0099] In another embodiment, R F1 and R F2 The number average molecular weight may be 4,000 to 30,000, preferably 5,000 to 10,000, and more preferably 6,000 to 10,000.

[0100] In the above formula, Rf 1 C may be substituted with one or more fluorine atoms. 1-16 It is an alkyl group.

[0101] 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 C 1-3 is preferably a straight-chain C 1-6 Alkyl groups, especially C 1-3 It is an alkyl group.

[0102] Above Rf 1 is preferably C substituted by one or more fluorine atoms 1-16 is an alkyl group, more preferably CF 2 HC 1-15 A perfluoroalkylene group, more preferably C 1-16 It is a perfluoroalkyl group.

[0103] 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 Perfluoroalkyl groups, specifically -CF 3 , -CF 2 CF 3 , or CF 2 CF 2 CF 3 It is.

[0104] In the above formula, Rf 2 C may be substituted with one or more fluorine atoms. 1-6 It is an alkylene group.

[0105] 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.

[0106] 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.

[0107] 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 Perfluoroalkylene groups, specifically -CF 2 -, -CF 2 CF2 - or CF 2 CF 2 CF 2 -It is.

[0108] In the above formula, p is 0 or 1. In one embodiment, p is 0. In another embodiment, p is 1.

[0109] In the above formula, q is 0 or 1. In one embodiment, q is 0. In another embodiment, q is 1.

[0110] In the above formulas (1) and (2), R F are each independently a divalent fluoropolyether group.

[0111] R F is preferably -(OC h1 R Fa 2h1 ) h3 -(OC h2 R Fa 2h2-2 ) h4 - [In formula: R Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom, h1 is an integer from 1 to 6, h2 is an integer from 4 to 8; h3 is an integer equal to or greater than 0, h4 is an integer equal to or greater than 0, However, the number of repeating units of h3 and h4 is 1 or more, preferably 2 or more, and more preferably 5 or more, and the order of the repeating units enclosed in parentheses with h3 and h4 is arbitrary in the formula. It may contain a group represented by:

[0112] In one embodiment, R F R can be linear or branched. F is preferably of the formula: -(OC 6 F 12 )a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 R Fa 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - [In formula: R Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom, a, b, c, d, e and f each independently represent an integer of 0 to 200, and the sum of a, b, c, d, e and f is 1 or more. The order of the repeating units enclosed in parentheses with a, b, c, d, e or f is arbitrary in the formula.] It is a group represented by the following formula:

[0113] R Fa is preferably a hydrogen atom or a fluorine atom, and more preferably a fluorine atom.

[0114] a, b, c, d, e and f may preferably each independently be an integer of 0 to 100.

[0115] 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.

[0116] These repeating units may be linear or branched. For example, the repeating unit may be -(OC 6 F 12 )- is -(OCF 2 CF 2 CF 2 CF 2 CF2 CF 2 )-、-(OCF(CF). 3 )CF 2 CF 2 CF 2 CF 2 )-、-(OCF 2 CF(CF). 3 )CF 2 CF 2 CF 2 )-、-(OCF 2 CF 2 CF(CF). 3 )CF 2 CF 2 )-、-(OCF 2 CF 2 CF 2 CF(CF). 3 )CF 2 )-、-(OCF 2 CF 2 CF 2 CF 2 CF(CF). 3 ))-without-(OC 5 F 10 )-は、-(OCF 2 CF 2 CF 2 CF 2 CF 2 )-、-(OCF(CF). 3 )CF 2 CF 2 CF 2 )-、-(OCF 2 CF(CF). 3 )CF 2 CF 2 )-、-(OCF 2 CF 2 CF(CF 3 )CF 2 )-、-(OCF 2 CF 2 CF 2 CF(CF). 3 ))-without-(OC 4 F 8 )-は、-(OCF 2 CF 2 CF 2 CF 2 )-、-(OCF(CF). 3 )CF2 CF 2 )-, -(OCF 2 CF(CF 3 )CF 2 )-, -(OCF 2 CF 2 CF(CF 3 ))-, -(OC(CF 3 ) 2 CF 2 )-, -(OCF 2 C(CF 3 ) 2 )-, -(OCF(CF 3 )CF(CF 3 ))-, -(OCF(C 2 F 5 )CF 2 )-and (OCF 2 CF(C 2 F 5 ))-. -(OC 3 F 6 )-(i.e., in the above formula, R Fa is a fluorine atom) is -(OCF 2 CF 2 CF 2 )-, -(OCF(CF 3 )CF 2 )-and (OCF 2 CF(CF 3 ))-. -(OC 2 F 4 )- is -(OCF 2 CF 2 )- and (OCF(CF 3 ))-.

[0117] In one embodiment, the repeating unit is linear. By making the repeating unit linear, the surface slip property, friction durability, etc. of the surface treatment layer can be improved.

[0118] In one embodiment, the repeating unit is a branched chain. By making the repeating unit a branched chain, the dynamic friction coefficient of the surface treatment layer can be increased.

[0119] In one embodiment, RF may include a ring structure.

[0120] The ring structure may be a three-, four-, five-, or six-membered ring as described below. [ka] [In the formula, * indicates the bond position.]

[0121] The ring structure may be preferably a four-, five-, or six-membered ring, more preferably a four-, or six-membered ring.

[0122] The repeating unit having a ring structure may preferably be the following unit. [ka] [In the formula, * indicates the bond position.]

[0123] In one embodiment, R F are each independently a group represented by any one of the following formulas (f1) to (f6). -(OC 3 F 6 ) d -(OC 2 F 4 ) e - (f1) [In the formula, d is an integer of 1 to 200, and e is 0 or 1.]; -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - (f2) [In the formula, c and d each independently represent an integer of 0 or more and 30 or less, and e and f each independently represent an integer of 1 or more and 200 or less, The sum of c, d, e, and f is 2 or more, The order of occurrence of each 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 OCF 2 Or O.C. 2 F 4 and R 7 is O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups independently selected from these groups; g is an integer from 2 to 100; -(R 6 -R 7 ) g -R r -(R 7’ -R 6’ ) g’ - (f4) [In the formula, R 6 is OCF 2 Or O.C. 2 F 4 and R 7 is O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups independently selected from these groups; R 6’ is OCF 2 Or O.C. 2 F 4 and R 7’is O.C. 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 or a combination of two or three groups independently selected from these groups; g is an integer from 2 to 100; g' is an integer from 2 to 100, R r teeth, [ka] (In the formula, * indicates the bond position.) .]; -(OC 6 F 12 ) a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2 F 4 ) e -(OCF 2 ) f - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC 6 F 12 ) a -(OC 5 F 10 ) b -(OC 4 F 8 ) c -(OC 3 F 6 ) d -(OC 2F 4 ) e -(OCF 2 ) f - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.]

[0124] 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 one embodiment, e is 1. In another embodiment, e is 0. 3 F 6 ) is preferably (OCF 2 CF 2 CF 2 ), (OCF 2 CF(CF 3 )) or (OCF(CF 3 )CF 2 ), and more preferably, -(OCF 2 CF 2 CF 2 ) d - is a group represented by the formula (f1). 2 F 4 ) is (OCF 2 CF 2 ), or (OCF(CF 3 )), preferably, (OCF 2 CF 2 ) is a group represented by the formula:

[0125] In the above formula (f2), e and f are each independently preferably an integer of 5 or more and 200 or less, more preferably an integer of 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 -(OCF 2 CF 2 CF 2 CF2 ) c -(OCF 2 CF 2 CF 2 ) d -(OCF 2 CF 2 ) e -(OCF 2 ) f In another embodiment, formula (f2) is a group represented by -(OC 2 F 4 ) e -(OCF 2 ) f - may be a group represented by the formula:

[0126] In the above formula (f3), R 6 Preferably, OC 2 F 4 In the above (f3), R 7 Preferably, OC 2 F 4 , O.C. 3 F 6 and O.C. 4 F 8 or a combination of two or three groups independently selected from these groups, more preferably OC 3 F 6 and O.C. 4 F 8 is a group selected from 2 F 4 , O.C. 3 F 6 and O.C. 4 F 8 Examples of the combination of two or three groups independently selected from the group consisting of, but not limited to, -OC 2 F 4 O.C. 3 F 6 -, -OC 2 F 4 O.C. 4 F 8 -, -OC 3 F 6 O.C. 2 F 4 -, -OC 3 F 6 O.C.3 F 6 -,-OC 3 F 6 OC 4 F 8 -,-OC 4 F 8 OC 4 F 8 -,-OC 4 F 8 OC 3 F 6 -,-OC 4 F 8 OC 2 F 4 -,-OC 2 F 4 OC 2 F 4 OC 3 F 6 -,-OC 2 F 4 OC 2 F 4 OC 4 F 8 -,-OC 2 F 4 OC 3 F 6 OC 2 F 4 -,-OC 2 F 4 OC 3 F 6 OC 3 F 6 -,-OC 2 F 4 OC 4 F 8 OC 2 F 4 -,-OC 3 F 6 OC 2 F 4 OC 2 F 4 -,-OC 3 F 6 OC 2 F 4 OC 3 F 6 -,-OC 3 F 6 OC 3 F 6 OC 2 F 4 - and OC4 F 8 O.C. 2 F 4 O.C. 2 F 4 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), OC 2 F 4 , O.C. 3 F 6 , O.C. 4 F 8 , O.C. 5 F 10 and O.C. 6 F 12 may be either linear or branched, and is preferably linear. In this embodiment, the above formula (f3) is preferably -(OC 2 F 4 -OC 3 F 6 ) g - or (OC 2 F 4 -OC 4 F 8 ) g -It is.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] In one embodiment, the R F is a group represented by the above formula (f1).

[0131] In one embodiment, the R F is a group represented by the above formula (f2).

[0132] In one embodiment, the R F is a group represented by the above formula (f3).

[0133] In one embodiment, the R F is a group represented by the above formula (f4).

[0134] In one embodiment, the R F is a group represented by the above formula (f5).

[0135] In one embodiment, the R F is a group represented by the above formula (f6).

[0136] Above R FIn the formula, 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, friction durability, and chemical resistance (e.g., durability against artificial sweat) of the surface treatment layer obtained from this compound are further improved. The smaller the e / f ratio, the more improved the slipperiness and friction durability of the surface treatment layer. On the other hand, by 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.

[0137] In one embodiment, the e / f ratio is preferably 0.2 to 0.95, and more preferably 0.2 to 0.9.

[0138] In one embodiment, from the viewpoint of heat resistance, the e / f ratio is preferably 1.0 or more, and more preferably 1.0 to 2.0.

[0139] In the above fluoropolyether group-containing compound, R F1 and R F2 The number average molecular weight of R 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.

[0140] In another embodiment, R F1 and R F2 The number average molecular weight may be 500 to 30,000, preferably 1,000 to 20,000, more preferably 2,000 to 15,000, even more preferably 2,000 to 10,000, for example, 3,000 to 6,000.

[0141] In another embodiment, R F1 and R F2The number average molecular weight may be 4,000 to 30,000, preferably 5,000 to 10,000, and more preferably 6,000 to 10,000.

[0142] X B1 each independently represents a single bond or a divalent organic group.

[0143] In one embodiment, X B1 is a single bond.

[0144] In another embodiment, X B1 are each independently a divalent organic group.

[0145] In a preferred embodiment, X B1 are each independently represented by the following formula: -(CX 121 X 122 ) b1 -(X B1a ) b2 -(CX 123 X 124 ) b3 - [In the formula, X 121 ~X 124 are independently H, C 1-6 an alkyl group or a halogen; X B1a is -C(=O)NH-, -NHC(=O)-, -O-, -C(=O)O-, -OC(=O)-, -OC(=O)O-, or -NHC(=O)NH- (the left side of each bond is CX 121 X 122 ), b1 is an integer from 0 to 10, b2 is 0 or 1, b3 is an integer from 0 to 10, and the sum of b1, b2, and b3 is at least 1. It is a group represented by the following formula:

[0146] X B1a is preferably -O- or C(=O)O-, more preferably -O-.

[0147] X B1ais preferably of the formula: -O-(CH 2 ) m11 - (In the formula, m11 is an integer of 1 to 6, preferably an integer of 1 to 3.) -(CH 2 ) m12 -O-(CH 2 ) m13 - (In the formula, m12 is an integer of 1 to 6, preferably an integer of 1 to 3, and m13 is an integer of 1 to 6, preferably an integer of 1 to 3.) It is a group represented by the following formula:

[0148] X B1a The examples are not particularly limited, but specifically include: -CH 2 -, -C 2 H 4 -, -C 3 H 6 -, -C 4 H 8 -, -O-CH 2 -, -OC 2 H 4 -, -OC 3 H 6 --etc.

[0149] R C are each independently a hydrogen atom or a monovalent group.

[0150] In one embodiment, R C is a hydrogen atom.

[0151] In another embodiment, R C is a monovalent group.

[0152] The monovalent group is preferably a halogen atom, -R 1 -R A or a monovalent group containing a fluoropolyether group. Such a monovalent group containing a fluoropolyether group is R B It has the same meaning as the monovalent group containing a fluoropolyether group in the above formula.

[0153] The halogen atom is a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom, preferably a chlorine atom, a bromine atom, or an iodine atom, more preferably a chlorine atom or a bromine atom, and even more preferably a chlorine atom.

[0154] In a preferred embodiment, R C -R 1 -R A It is.

[0155] In another preferred embodiment, R C is a halogen atom, preferably a chlorine atom.

[0156] α is 1 or 2, preferably 1.

[0157] The fluorine-containing compound of the present disclosure can be synthesized, for example, as follows.

[0158] The following formula (a): R F1 -R 51 -OH(a) [In formula: R R1 is a monovalent fluoropolyether group, R 51 is a divalent organic group. and a compound represented by the following formula (b): [ka] and reacting the compound represented by formula (c): [ka] [In the formula, R F1 and R 51 has the same meaning as above.] The compound represented by the formula (c) is mixed with a compound represented by the formula (d): HS-R 52 -OH (d) [In the formula, R 52 is a divalent organic group. and reacting the compound represented by formula (e): [ka] [In the formula, R F1 , R 51 and R 52 has the same meaning as above.] The compound represented by the formula (e) is mixed with a compound represented by the formula (f1): OCN-R 53 -O-CO-CR 3 =CH 2 (f1) [In formula: R 53 is a divalent organic group, R 3 is a hydrogen atom or a hydrocarbon group. to react a compound represented by formula (g1): [ka] [In the formula, R F1 , R 51 , R 52 and R 53 has the same meaning as above.] It is possible to obtain the fluorine-containing compound of the present disclosure represented by the formula:

[0159] Alternatively, instead of the compound represented by formula (f1) above, a compound represented by formula (f2): OCN-R 54 (O-CO-CR 3 =CH 2 ) 2 (f2) [In formula: R 54 is a trivalent organic group, R 3 is a hydrogen atom or a hydrocarbon group. with a compound represented by formula (e) to obtain a compound represented by formula (g2): [ka] [In the formula, R F1 , R 51 , R52 and R 54 has the same meaning as above.] It is possible to obtain the fluorine-containing compound of the present disclosure represented by the formula:

[0160] Alternatively, the compound represented by formula (e) may be reacted with a compound represented by formula (h): [ka] [In formula: R 61 is a divalent organic group, R P is a leaving group such as -O-tosyl, R 62 is a hydrocarbon group, e.g., C 1-6 An alkyl group, preferably a methyl group. by reacting a compound represented by formula (i): [ka] [In the formula, R F1 , R 51 , R 52 , R 61 and R 62 has the same meaning as above.] The resulting compound represented by formula (i) is treated with an acid, for example hydrochloric acid, to obtain a compound represented by formula (j): [ka] [In the formula, R F1 , R 51 , R 52 , and R 61 has the same meaning as above.] The compound represented by the formula (j) is reacted with the compound represented by the formula (f1): OCN-R 53 -O-CO-CR 3 =CH 2 (f1) [In formula: R 53 is a divalent organic group, R 3 is a hydrogen atom or a hydrocarbon group. By reacting a compound represented by the formula (k1): [ka] [In the formula, R Ac -OCO-CR 3 =CH 2 and R F1 , R 3 , R 51 , R 52 , R 53 , and R 61 has the same meaning as above.] It is possible to obtain the fluorine-containing compound of the present disclosure represented by the formula:

[0161] Alternatively, instead of the compound represented by formula (f1) above, a compound represented by formula (f2): OCN-R 54 (O-CO-CR 3 =CH 2 ) 2 (f2) [In formula: R 54 is a trivalent organic group, R 3 is a hydrogen atom or a hydrocarbon group. with a compound represented by formula (j) to obtain a compound represented by formula (k2): [ka] [In the formula, R Ac -OCO-CR 3 =CH 2 and R F1 , R 3 , R 51 , R 52 and R 54 has the same meaning as above.] It is possible to obtain the fluorine-containing compound of the present disclosure represented by the formula:

[0162] Next, the surface treatment agent of the present disclosure will be described.

[0163] The surface treatment agent of the present disclosure contains a fluorine-containing compound represented by formula (1).

[0164] In one embodiment, the fluorine-containing compound in the surface treatment agent of the present disclosure is a compound represented by formula (1) in which α is 1.

[0165] In another embodiment, in the surface treatment agent of the present disclosure, the fluorine-containing compound is a compound represented by formula (1) in which α is 2.

[0166] In another embodiment, in the surface treatment agent of the present disclosure, the fluorine-containing compound is a compound represented by formula (1) in which α is 1 and a compound represented by formula (1) in which α is 2.

[0167] In the surface treatment agent of the present disclosure, the compound represented by formula (1) in which α is 2 is preferably 0.1 mol% or more and 35 mol% or less with respect to the total of the compound represented by formula (1) in which α is 1 and the compound represented by formula (1) in which α is 2. The lower limit of the content of the compound represented by formula (1) in which α is 2 with respect to the total of the compound represented by formula (1) in which α is 1 and the compound represented by formula (1) in which α is 2 may be preferably 0.1 mol%, more preferably 0.2 mol%, even more preferably 0.5 mol%, even more preferably 1 mol%, particularly preferably 2 mol%, and especially 5 mol%. The upper limit of the content of the compound represented by formula (1) in which α is 2 with respect to the total of the compound represented by formula (1) in which α is 1 and the compound represented by formula (1) in which α is 2 may be preferably 35 mol%, more preferably 30 mol%, even more preferably 20 mol%, even more preferably 15 mol% or 10 mol%. The compound represented by formula (1) in which α is 2 relative to the total of the compound represented by formula (1) in which α is 1 and the compound represented by formula (1) in which α is 2 is preferably 0.1 mol% or more and 30 mol% or less, more preferably 0.1 mol% or more and 20 mol% or less, even more preferably 0.2 mol% or more and 10 mol% or less, even more preferably 0.5 mol% or more and 10 mol% or less, particularly preferably 1 mol% or more and 10 mol% or less, for example, 2 mol% or more and 10 mol% or less, or 5 mol% or more and 10 mol% or less. By setting the compound represented by formula (1) in which α is 2 in such a range, the wear resistance can be further improved.

[0168] The content of the compound represented by formula (1) may be preferably 0.1 to 50.0 mass%, more preferably 1.0 to 30.0 mass%, further preferably 5.0 to 25.0 mass%, particularly preferably 10.0 to 20.0 mass%, based on the total mass of the surface treatment agent. By setting the content of the fluorine-containing compound within the above range, higher water and oil repellency and friction durability can be obtained.

[0169] The surface treatment agent of the present disclosure may contain a solvent, 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 a "fluorine-containing oil"), a (non-reactive) silicone compound that can be understood as a silicone oil (hereinafter referred to as a "silicone oil"), alcohols, a catalyst, a surfactant, a polymerization inhibitor, a sensitizer, and the like.

[0170] Examples of the solvent include aliphatic hydrocarbons such as hexane, cyclohexane, heptane, octane, nonane, decane, undecane, dodecane, and mineral spirits; aromatic hydrocarbons such as benzene, toluene, xylene, naphthalene, and solvent naphtha; methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, isopropyl acetate, isobutyl acetate, cellosolve acetate, propylene glycol methyl ether acetate, carbitol acetate, diethyl oxalate, ethyl pyruvate, and ethyl 2-hydroxybutyrate. Esters such as ethyl acetoacetate, amyl acetate, methyl lactate, ethyl lactate, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 2-hydroxyisobutyrate, ethyl 2-hydroxyisobutyrate; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, 2-hexanone, cyclohexanone, methyl amino ketone, 2-heptanone; ethyl cellosolve, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether ... glycol ethers such as propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether acetate, dipropylene glycol dimethyl ether, and ethylene glycol monoalkyl ether; alcohols such as methanol, ethanol, iso-propanol, n-butanol, isobutanol, tert-butanol, sec-butanol, 3-pentanol, octyl alcohol, 3-methyl-3-methoxybutanol, and tert-amyl alcohol; glycols such as ethylene glycol and propylene glycol; cyclic ethers such as tetrahydrofuran, tetrahydropyran, and dioxane; amides such as N,N-dimethylformamide and N,N-dimethylacetamide; ether alcohols such as methyl cellosolve, cellosolve, isopropyl cellosolve, butyl cellosolve, and diethylene glycol monomethyl ether; diethylene glycol monoethyl ether acetate;1,1,2-Trichloro-1,2,2-trifluoroethane, 1,2-Dichloro-1,1,2,2-tetrafluoroethane, Dimethylsulfoxide, 1,1-Dichloro-1,2,2,3,3-pentafluoropropane (HCFC225), Zeorora H, HFE7100, HFE7200, HFE7300, CF; 3 CH 2 OH, CF 3 CF 2 CH 2 OH, (CF 3 ) 2 Fluorine-containing solvents such as CHOH, etc., or a mixture of two or more of these solvents, etc., may be used.

[0171] The fluorine-containing oil is not particularly limited, but examples thereof include compounds represented by the following general formula (3) (perfluoro(poly)ether compounds). Rf 5 -(OC 4 F 8 ) a’ -(OC 3 F 6 ) b’ -(OC 2 F 4 ) c’ -(OCF 2 ) d’ -Rf 6 (3) In the formula, Rf 5 is an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms (preferably, 1―16 Rf represents a perfluoroalkyl group; 6 is an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms (preferably, 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 the 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 at least 1, preferably 1 to 300, and more preferably 20 to 300. The order of the repeating units enclosed in parentheses with the subscript a', b', c' or d' is arbitrary in the formula. Among these repeating units, -(OC 4 F 8 )- is -(OCF 2 CF 2 CF 2 CF 2 )-, -(OCF(CF 3 )CF 2 CF 2 )-, -(OCF 2 CF(CF 3 )CF 2 )-, -(OCF 2 CF 2 CF(CF 3 ))-, -(OC(CF 3 ) 2 CF 2 )-, -(OCF 2 C(CF 3 ) 2 )-, -(OCF(CF 3 )CF(CF 3 ))-, -(OCF(C 2 F 5 )CF 2 )-and (OCF 2 CF(C 2 F 5 ))-, but preferably -(OCF 2 CF 2 CF 2 CF 2 )-. -(OC 3 F 6 )- is -(OCF 2 CF 2 CF 2 )-, -(OCF(CF 3 )CF 2 )-and (OCF 2 CF(CF 3 ))-, preferably -(OCF2 CF 2 CF 2 )-. -(OC 2 F 4 )- is -(OCF 2 CF 2 )- and (OCF(CF 3 ))-, but preferably -(OCF 2 CF 2 )-.

[0172] Examples of the perfluoro(poly)ether compound represented by the above general formula (3) include compounds represented by the following general formulas (3a) and (3b) (which may be one type or a mixture of two or more types). Rf 5 -(OCF 2 CF 2 CF 2 ) b” -Rf 6 (3a) Rf 5 -(OCF 2 CF 2 CF 2 CF 2 ) a” -(OCF 2 CF 2 CF 2 ) b” -(OCF 2 CF 2 ) c” -(OCF 2 ) d” -Rf 6 (3b) In these formulas, Rf 5 and Rf 6 is as defined above; in formula (3a), b" is an integer of 1 or more and 100 or less; in formula (3b), a" and b" are each independently an integer of 0 or more and 30 or less, and c" and d" are each independently an integer of 1 or more and 300 or less. The order of occurrence of each repeating unit enclosed in parentheses with the subscripts a", b", c", and d" is arbitrary in the formula.

[0173] 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.

[0174] The above-mentioned fluorine-containing oil may have an average molecular weight of 500 to 10000. The molecular weight of the fluorine-containing oil can be measured using GPC.

[0175] 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 of the present disclosure. 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 at all, or may contain a very small amount of fluorine-containing oil.

[0176] In one embodiment, the average molecular weight of the fluorinated oil may be larger than that of the fluorinated compound. By setting the average molecular weight in this manner, it is possible to obtain better abrasion resistance and surface slipperiness, particularly when the surface treatment layer is formed by a vacuum deposition method.

[0177] In one embodiment, the average molecular weight of the fluorine-containing oil may be smaller than that of the fluorine-containing compound. By setting the average molecular weight in this range, it is possible to form a cured product having high abrasion resistance and high surface slipperiness while suppressing the decrease in transparency of the surface treatment layer obtained from the compound.

[0178] The fluorine-containing oil contributes to improving the surface slip properties of the layer formed by the surface treatment agent of the present disclosure.

[0179] 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.

[0180] 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 compounds of the present disclosure (when two or more types are used, the total of these, the same applies below).

[0181] The silicone oil contributes to improving the surface slipperiness of the surface treatment layer.

[0182] Examples of the alcohols include alcohols having 1 to 6 carbon atoms which may be substituted with one or more fluorine atoms, such as methanol, ethanol, isopropanol, tert-butanol, CF 3 CH 2 OH, CF 3 CF 2 CH 2 OH, (CF 3 ) 2 The addition of these alcohols to the surface treatment agent improves the stability of the surface treatment agent and also improves the compatibility of the perfluorinated compound with the solvent.

[0183] The alcohol is preferably 2,2,3,3,3-pentafluoro-1-propanol or 2,2,2-trifluoroethanol.

[0184] 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.

[0185] The catalyst promotes the hydrolysis and dehydration condensation of the fluorine-containing compound of the present disclosure, and promotes the formation of the layer formed by the surface treatment agent of the present disclosure.

[0186] Other examples of the other components include tetraethoxysilane, methyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and methyltriacetoxysilane in addition to the above.

[0187] 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.

[0188] 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.

[0189] The articles of the present disclosure are described below.

[0190] The article of the present disclosure includes a substrate and a layer (surface treatment layer) formed on the surface of the substrate from the surface treatment agent of the present disclosure.

[0191] 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.

[0192] For example, when the article to be manufactured is an optical component, the material constituting the surface of the substrate may be a material for optical components, such as glass or transparent plastic. When the article to be manufactured is an optical component, some layer (or film), such as a hard coat layer or an antireflection layer, may be formed on the surface (outermost layer) of the substrate. The antireflection layer may be either a single-layer antireflection layer or a multi-layer antireflection layer. Examples of inorganic substances that can be used for the antireflection layer include SiO 2 , SiO, ZrO 2 , TiO 2 , TiO, Ti 2 O 3 , Ti 2 O 5 , Al 2 O 3 , Ta 2 O 5 , Ta 3 O 5 ,Nb 2 O 5 , HfO 2 , Si 3 N 4 , CEO 2 , MgO, Y 2 O 3 , SnO 2 , MgF 2 , WO 3 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 antireflection layer is formed, the outermost layer is preferably SiO 2 and / or SiO are preferably used. 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, and a liquid crystal display module, etc., depending on the specific specifications.

[0193] 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.

[0194] 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, and then the unsaturated bond is cleaved in an atmosphere containing oxygen, nitrogen, etc.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] Examples of wet coating techniques include dip coating, spin coating, flow coating, spray coating, roll coating, gravure coating and similar techniques.

[0200] 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.

[0201] Furthermore, coating by atmospheric pressure plasma method is also possible.

[0202] 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., C 6 F 13 CH 2 CH 3(e.g., Asahiklin® AC-6000 manufactured by Asahi Glass Co., Ltd.), 1,1,2,2,3,3,4-heptafluorocyclopentane (e.g., Zeorora® H manufactured by Zeon Corporation); hydrofluoroethers (HFEs) (e.g., perfluoropropyl methyl ether (C 3 F 7 OCH 3 ) (e.g., Novec (trademark) 7000 manufactured by Sumitomo 3M Co., Ltd.), perfluorobutyl methyl ether (C 4 F 9 OCH 3 ) (e.g., Novec (trademark) 7100 manufactured by Sumitomo 3M Co., Ltd.), perfluorobutyl ethyl ether (C 4 F 9 O.C. 2 H 5 ) (e.g., Novec (trademark) 7200 manufactured by Sumitomo 3M Limited), perfluorohexyl methyl ether (C 2 F 5 CF(OCH 3 ) C 3 F 7 ) (e.g., Novec™ 7300 from Sumitomo 3M Limited) (wherein the perfluoroalkyl group and the alkyl group may be linear or branched), or CF 3 CH 2 OCF 2 CHF 2 (For example, 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. Among them, hydrofluoroethers are preferred, and perfluorobutyl methyl ether (C 4 F 9 OCH 3 ) and / or perfluorobutyl ethyl ether (C 4 F 9 O.C. 2 H 5 ) is particularly preferred.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] Therefore, the present disclosure further relates to an optical material having the above-mentioned surface treatment layer as the outermost layer.

[0208] 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.

[0209] 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.

[0210] The article of the present disclosure may be a medical device or medical material. The article having a layer obtained by the present disclosure may be an automobile interior or exterior member. Examples of exterior materials include windows, light covers, and exterior camera covers. Examples of interior materials include instrument panel covers, navigation system touch panels, and decorative interior materials.

[0211] 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, preferably 1 to 30 nm, and more preferably 1 to 15 nm, from the viewpoints of optical performance, abrasion resistance, and antifouling properties.

[0212] 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

[0213] The article of the present disclosure will be described below in the examples, but the present disclosure is not limited to the following examples. In the examples, the order of the repeating units constituting the fluoropolyether is arbitrary, and the chemical formula shown below shows the average composition.

[0214] Synthesis Example 1 Synthesis of (A-1) In a 300mL four-neck flask equipped with a stirrer, dropping funnel, reflux condenser, and thermometer, and with the atmosphere substituted with nitrogen, 2 CF 2 -(OCF 2 ) m (OCF 2 CF 2 ) n O-CF 2 CF 2 OH(m=20, n=20(where, (CF 2 CF 2 CF 2 O) and / or (CF 2 CF 2 CF 2 CF 2 50g of perfluoropolyether-containing alcohol (A) represented by the formula (1) and 4.5g of trichlorotriazine were dissolved in 100g of perfluorobenzene, and then cooled to 0°C. Then, 3.7g of diisopropylethylamine was added and reacted at room temperature for 2 hours. Next, 10g of mercaptononanol and 15.1g of diisopropylethylamine were added, and the mixture was heated to 65°C and stirred for 10 hours. After the reaction was completed, the organic layer was separated by a separation operation and distilled under reduced pressure to obtain 56.7g of a reaction product (A-1) of perfluoropolyether-containing alcohol, trichlorotriazine and mercaptononanol.

[0215] Synthesis Example 2 Synthesis of (B-1) The perfluoropolyether-containing alcohol (A) of Synthesis Example 1 was subjected to CF 3 CF 2 CF 2 -(OCF 2 CF 2 CF2 ) s O-CF 2 The same procedure as in Synthesis Example 1 was followed except for changing to OH (s=23), to obtain 52.1 g of a reaction product (B-1) of perfluoropolyether-containing alcohol, trichlorotriazine, and mercaptononanol.

[0216] Synthesis Example 3 Synthesis of (B-2) The same procedure as in Synthesis Example 2 was repeated except that mercaptooctanol was used instead of mercaptononanol, to obtain 51.0 g of a reaction product (B-2) of a perfluoropolyether-containing alcohol, trichlorotriazine, and mercaptooctanol.

[0217] Synthesis Example 4 Synthesis of (B-3) The same procedure as in Synthesis Example 2 was repeated except that mercaptohexanol was used instead of mercaptononanol, to obtain 51.2 g of a reaction product (B-3) of a perfluoropolyether-containing alcohol, trichlorotriazine, and mercaptohexanol.

[0218] Synthesis Example 5 Synthesis of (C-1) The same procedure as in Synthesis Example 1 was repeated except that mercaptononanol was changed to diethanolamine, to obtain 50.4 g of a reaction product (C-1) of a perfluoropolyether-containing alcohol, trichlorotriazine, and diethanolamine.

[0219] Synthesis Example 6 Synthesis of (D-1) The perfluoropolyether-containing alcohol (A) of Synthesis Example 5 was subjected to CF 3 CF 2 CF 2 -(OCF 2 CF 2 CF 2 ) s O-CF 2 The same procedure as in Synthesis Example 5 was followed except that OH(s=23)(B) was used, to obtain 49.7 g of a reaction product (D-1) of a perfluoropolyether-containing alcohol, trichlorotriazine, and diethanolamine.

[0220] Synthesis Example 7 Synthesis of (TA-1a) In a 300 mL four-neck flask equipped with a stirrer, dropping funnel, reflux condenser and thermometer, 26.6 g of (A-1) and 0.04 g of dibutyltin dilaurate were dissolved in 80 g of 1,3-bis(trifluoromethyl)benzene. After the system was fully substituted with nitrogen, 5.9 g of 2-acryloyloxyethyl isocyanate was added, the temperature was raised to 45°C and the mixture was stirred for 8 hours. After the reaction was completed, the reaction solution was purified by reprecipitation to recover the fluoropolyether group-containing compound (TA-1a).

[0221] Synthesis Example 8 Synthesis of (TA-1b) A fluoropolyether group-containing compound (TA-1b) was recovered in the same manner as in Synthesis Example 7, except that 2-acryloyloxyethyl isocyanate in Synthesis Example 7 was changed to 1,1-(bisacryloyloxymethyl)ethyl isocyanate.

[0222] Synthesis Example 9 Synthesis of (TB-1b) A fluoropolyether group-containing compound (TB-1b) was recovered in the same manner as in Synthesis Example 8, except that (A-1) in Synthesis Example 8 was changed to (B-1) and 2-acryloyloxyethyl isocyanate was changed to 1,1-(bisacryloyloxymethyl)ethyl isocyanate.

[0223] Synthesis Example 10 Synthesis of (TB-2b) A fluoropolyether group-containing compound (TB-2b) was recovered in the same manner as in Synthesis Example 9, except that (B-1) in Synthesis Example 9 was changed to (B-2).

[0224] Synthesis Example 11 Synthesis of (TB-2a) A fluoropolyether group-containing compound (TB-2a) was recovered in the same manner as in Synthesis Example 10, except that 1,1-(bisacryloyloxymethyl)ethyl isocyanate was changed to 2-acryloyloxyethyl isocyanate.

[0225] Synthesis Example 12 Synthesis of (TB-3b) A fluoropolyether group-containing compound (TB-3b) was recovered in the same manner as in Synthesis Example 10, except that (B-2) in Synthesis Example 10 was changed to (B-3).

[0226] Comparative Example Synthesis Example 13 Synthesis of (TC-1a) A fluoropolyether group-containing compound (TC-1a) was recovered in the same manner as in Synthesis Example 11, except that (B-2) in Synthesis Example 11 was changed to (C-1).

[0227] Synthesis Example 14 Synthesis of (TC-1b) A fluoropolyether group-containing compound (TC-1b) was recovered in the same manner as in Synthesis Example 13, except that 2-acryloyloxyethyl isocyanate in Synthesis Example 13 was changed to 1,1-(bisacryloyloxymethyl)ethyl isocyanate.

[0228] Synthesis Example 15 Synthesis of (TD-1a) A fluoropolyether group-containing compound (TD-1a) was recovered in the same manner as in Synthesis Example 11, except that (B-2) in Synthesis Example 11 was changed to (D-1).

[0229] Synthesis Example 16 Synthesis of (TD-1b) A fluoropolyether group-containing compound (TD-1b) was recovered in the same manner as in Synthesis Example 15, except that 2-acryloyloxyethyl isocyanate in Synthesis Example 15 was changed to 1,1-(bisacryloyloxymethyl)ethyl isocyanate.

[0230] evaluation Solubility Test The fluoropolyether group-containing compound obtained above was added to propylene glycol monomethyl ether (PGME), propylene glycol monomethyl ether acetate (PGMEA), methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), acetone, ethyl acetate, and butyl acetate so that the solid content concentration was 20 wt%, and the mixture was stirred with a mix rotor for 2 hours to dissolve the compound, and the solution state was visually confirmed. The evaluation criteria were as follows. The results are shown in Table 1. ◎ Transparent and uniformly dissolved ○ Almost completely dissolved △ Slightly cloudy, slight sediment × Insoluble or turbid

[0231] [Table 1]

[0232] Working Example Beamset 575CB (Arakawa Chemical Industries, Ltd.) (1.5 g) and methyl isobutyl ketone (1.5 g) were mixed, and fluoropolyether group-containing compounds TA-1a, TA-1b, TB-1b, TB-2a, TB-2b and TB-3b were added so that each was 0.5 mass % relative to the Beamset 575CB. The mixture was stirred in a rotary mixer for 1 hour in the dark to obtain fluoropolyether-containing hard coat materials 1 to 6 (Examples 1 to 6).

[0233] Comparative Example A fluoropolyether-containing hard coat material 7 (Comparative Example 1) was obtained in the same manner as in the above-mentioned Example, except that the fluoropolyether group-containing compound was changed to TD-1b.

[0234] (evaluation) <Evaluation of cured film properties> The hard coat materials 1 to 7 (1.0 ml) obtained above were placed on a PET film (Cosmoshine A4100, manufactured by Toyobo Co., Ltd.) cut to 1 / 4 the size of A4 paper, and a uniform coating film was formed using a bar coater. The obtained coating film was irradiated with light containing 365 nm UV light at 600 mJ / cm under a nitrogen atmosphere. 2 Each hard coat material was cured to obtain a cured film (surface treatment layer). The initial properties of these cured films were measured.

[0235] (exterior) The appearance of the cured film was visually inspected and evaluated according to the following criteria. The results are shown in Table 2. G: Transparent. NG: Whitening or foreign matter such as minute irregularities on the surface.

[0236] (Haze measurement) Haze was measured for each cured film. The measurement method is based on ASTM standards and is performed using a 7000SP (manufactured by Densyoku Co., Ltd.). The measurements were taken at three different points on the material, and the average value was calculated and used. The measurement results are shown in Table 2.

[0237] (static contact angle) The static contact angle was measured using a fully automatic contact angle meter, DropMaster 700 (Kyowa Interface Science Co., Ltd.). Then, 2 μL of water was dropped from a microsyringe onto the horizontally placed substrate, and a still image was taken 1 second after the drop using a video microscope. The results are shown in Table 2.

[0238] [Table 2]

[0239] (Steel wool (SW) friction durability evaluation) Among the cured films, Examples 1 to 6, which had good appearances, were subjected to a steel wool friction durability evaluation. Specifically, the substrate on which the surface treatment layer was formed was placed horizontally, and steel wool (number #0000, dimensions 5 mm x 10 mm x 10 mm) was brought into contact with the surface treatment layer of the substrate, and a load of 1,000 gf was applied thereon, and then the steel wool was moved back and forth at a speed of 53.3 mm / sec (friction speed 40 rpm) while the load was applied. The static contact angle (degrees) of water was measured every 1,000 reciprocations, and the evaluation was stopped when the measured value of the contact angle became less than 100 degrees. The number of reciprocations when the contact angle finally exceeded 100 degrees is shown in Table 3.

[0240] (Eraser friction durability evaluation) For the cured films of Examples 1 to 6, which had good appearances, the friction durability was evaluated by the eraser friction durability test. Specifically, the sample article on which the surface treatment layer was formed was placed horizontally, and an eraser (Minoan, hardness 81 (Durometer A type), circular with a planar dimension of 0.6 cm diameter) was brought into contact with the surface of the surface treatment layer, and a load of 1000 gf was applied thereon, and then the eraser was reciprocated at a speed of 48 mm / sec (friction speed 40 rpm) while the load was applied. The static contact angle (degrees) of water was measured every 1000 reciprocations. The evaluation was stopped when the measured value of the contact angle became less than 100 degrees. The number of reciprocations when the contact angle finally exceeded 100 degrees is shown in Table 3.

[0241] [Table 3] [Industrial Applicability]

[0242] The present disclosure can be suitably used for forming a surface treatment layer on the surface of a wide variety of substrates.

Claims

1. The following formula (1): 【Chemistry 1】 [In the formula: R １ is -S-, R ２ are each independently a hydrocarbon group; R Ａ are each independently -OCO-CR ３ =CH ２ is a group containing R ３ are each independently a hydrogen atom or a hydrocarbon group, R Ｂ is a monovalent or divalent group containing a fluoropolyether group, R Ｃ are each independently a hydrogen atom or a monovalent group, a is 1 or 2. The surface treatment agent contains a fluorine-containing compound represented by the formula:

2. R Ａ are each independently -X Ａ１ (-X Ａ２ (R Ａｃ ) Ａ２ ) Ａ１ and X Ａ１ is a divalent to pentavalent organic group, X Ａ２ each independently represents a single bond or a divalent to pentavalent organic group, A1 is X Ａ１ is the valence of −1, A2 is X Ａ２ is the valence of −1, R Ａｃ are each independently -OCO-CR ３ =CH ２ and R ３ are each independently a hydrogen atom or a hydrocarbon group; The surface treatment agent according to claim 1 .

3. X Ａ１ is -R Ａ１１ -R Ａ１２ - or -R Ａ１３ (-R Ａ１２ ) ２ and R Ａ１１ is C １－２０ Alkylene group, -(CH ２ ) ｚ１ -O-(CH ２ ) ｚ２ - (wherein z1 is an integer from 0 to 10, and z2 is an integer from 0 to 10), or -(CH ２ ) ｚ３ -phenylene-(CH ２ ) ｚ４ - (wherein z3 is an integer from 0 to 10, and z4 is an integer from 0 to 10), R Ａ１２ is -O-, -CO-, or -NR １１ - and R １１ is a hydrogen atom or a hydrocarbon group, R Ａ１３ is a trivalent C １－１０ Hydrocarbon group or trivalent C １－１０ A group containing one or more O in the main chain of a hydrocarbon group. The surface treatment agent according to claim 2.

4. X Ａ２ is -X Ａ３ (-X Ａ４ ) Ａ３ and X Ａ３ represents a single bond or a divalent or trivalent organic group, A3 is X Ａ３ is the valence of −1, X Ａ４ are each independently a divalent or trivalent organic group; The surface treatment agent according to claim 2.

5. X Ａ３ is a single bond, -R Ａ３１ -R Ａ３２ - or -R Ａ３３ (-R Ａ３２ ) ２ and R Ａ３１ is C １－２０ Alkylene group, -(CH ２ ) ｚ５ -O-(CH ２ ) ｚ６ - (wherein z5 is an integer from 0 to 10, and z6 is an integer from 0 to 10), or -(CH ２ ) ｚ７ -phenylene-(CH ２ ) ｚ８ - (wherein z7 is an integer from 0 to 10, and z8 is an integer from 0 to 10), R Ａ３２ is -O-, -CO-, or -NR １２ - and R １２ is a hydrogen atom or a hydrocarbon group, R Ａ３３ is a trivalent hydrocarbon group or a trivalent C １－１０ A group containing one or more O in the main chain of a hydrocarbon group. The surface treatment agent according to claim 4.

6. X Ａ４ is -CO-NH-C(R １３ ) ３－ａ４ (R １４ ) ａ４ and R １３ is a hydrogen atom or C １－６ is an alkyl group, R １４ are each independently １－６ is an alkylene group, a4 is 1 or 2; The surface treatment agent according to claim 4.

7. R Ｂ is -X Ｂ１ -R Ｆ１ , or -X Ｂ１ -R Ｆ２ -X Ｂ１ - and R Ｆ１ is a monovalent fluoropolyether group, R Ｆ２ is a divalent fluoropolyether group, X Ｂ１ are each independently a single bond or a divalent organic group; The surface treatment agent according to claim 1 .

8. R Ｆ１ is Rf １ -R Ｆ -O ｑ - and R Ｆ２ is -Rf ２ ｐ -R Ｆ -O ｑ - and Rf １ C optionally substituted with one or more fluorine atoms １－１６ is an alkyl group, Rf ２ C optionally substituted with one or more fluorine atoms １－６ is an alkylene group, R Ｆ are each independently a divalent fluoropolyether group, p is 0 or 1; Each q is independently 0 or 1; The surface treatment agent according to claim 7.

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

10. R Ｆａ The surface treatment agent according to claim 9 , wherein is a fluorine atom.

11. R Ｆ each independently represents the following formula (f1), (f2), (f3), (f4), (f5) or (f6): -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ - (f1) [In the formula, d is an integer of 1 to 200, and e is 0 or 1.] -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f2) [In the formula, c and d each independently represent an integer of 0 to 30; e and f are each independently an integer from 1 to 200; The sum of c, d, e and f is an integer from 10 to 200; The order of occurrence of each repeat unit enclosed in parentheses with the subscript c, d, e, or f is arbitrary in the formula. -(R ６ -R ７ ) ｇ -R ９ - (f3) [In the formula, R ６ is O.C.F. ２ Or O.C. ２ F ４ and R ７ , O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups selected from these groups; R ９ is a single bond or OCF ２ , O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups selected from these groups; g is an integer from 2 to 100. -(R ６ -R ７ ) ｇ -R ｒ -(R ７’ -R ６’ ) ｇ’ - (f4) [In the formula, R ６ is O.C.F. ２ Or O.C. ２ F ４ and R ７ , O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups independently selected from these groups; R ６’ is O.C.F. ２ Or O.C. ２ F ４ and R ７’ , O.C. ２ F ４ , O.C. ３ F ６ , O.C. ４ F ８ , O.C. ５ F １０ and O.C. ６ F １２ or a combination of two or three groups independently selected from these groups; g is an integer from 2 to 100; g' is an integer from 2 to 100, R ｒ teeth, 【Chemistry 2】 (In the formula, * indicates the bond position.) is.]; -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f5) [In the formula, e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] -(OC ６ F １２ ) ａ -(OC ５ F １０ ) ｂ -(OC ４ F ８ ) ｃ -(OC ３ F ６ ) ｄ -(OC ２ F ４ ) ｅ -(OCF ２ ) ｆ - (f6) [In the formula, f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, and the order of the repeating units enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.] The surface treatment agent according to claim 8 , wherein the group is represented by the following formula:

12. Rf １ are each independently １－１６ is a perfluoroalkyl group, Rf ２ are each independently １－６ is a perfluoroalkylene group. The surface treatment agent according to claim 8.

13. X Ｂ１ are each independently represented by the following formula: -(CX １２１ X １２２ ) ｂ１ -(X Ｂ１ａ ) ｂ２ -(CX １２３ X １２４ ) ｂ３ - [In the formula, X １２１ ~X １２４ are each independently H, C １－６ an alkyl group or a halogen; X Ｂ１ａ is —C(═O)NH—, —NHC(═O)—, —O—, —C(═O)O—, —OC(═O)—, —OC(═O)O—, or —NHC(═O)NH—, b1 is an integer from 0 to 10, b2 is 0 or 1, b3 is an integer from 0 to 10, and the sum of b1, b2, and b3 is at least 1. The surface treatment agent according to claim 7 , wherein the group is represented by the following formula:

14. X Ｂ１ are each independently —O—(CH ２ ) ｍ１１ - and m11 is an integer from 1 to 6. The surface treatment agent according to claim 7.

15. The surface treatment agent according to claim 1 , wherein α is 1.

16. R Ｃ is -R １ -R Ａ The surface treatment agent according to claim 1 ,

17. An article comprising a substrate and a layer formed on the surface of the substrate using the surface treatment agent according to claim 1.

18. The article of claim 17, wherein the article is an optical component.

19. Formula (1e): 【Chemistry 3】 R １ is -S-, R ２ are each independently a hydrocarbon group; R ＯＨ is -R Ａ１１ -OH, -R Ａ１３ (OH) ２ , or -R Ａ１４ (-R Ａ１３ (OH) ２ ) ２ and R Ａ１１ is C １－２０ Alkylene group, -(CH ２ ) ｚ１ -O-(CH ２ ) ｚ２ - (wherein z1 is an integer from 0 to 10, and z2 is an integer from 0 to 10), or -(CH ２ ) ｚ３ -phenylene-(CH ２ ) ｚ４ - (wherein z3 is an integer from 0 to 10, and z4 is an integer from 0 to 10), R Ａ１３ is a trivalent C １－１０ Hydrocarbon group or trivalent C １－１０ A group containing one or more O in the main chain of a hydrocarbon group, R Ａ１４ is a trivalent C １－１０ Hydrocarbon group or trivalent C １－１０ A group containing one or more O in the main chain of a hydrocarbon group, R Ｂ is a monovalent or divalent group containing a fluoropolyether group, R Ｃｅ are each independently a hydrogen atom or a monovalent group, a is 1 or 2. A compound represented by the formula:

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