Surface treatment agent

Abstract

The purpose of the present invention is to provide a surface treatment agent capable of achieving a surface treatment layer having good heat resistance. A surface treatment agent according to the present invention comprises: a fluoropolyether group-containing silane compound (A); a low molecular weight fluorine-containing compound or a low molecular weight silane compound (B); and a fluorine-based solvent (C), the low-molecular-weight fluorine-containing compound or the low-molecular-weight silane compound (B) containing one or more substances selected from the group consisting of low-molecular-weight fluorine-containing compounds having an ether bond or an aromatic group and low-molecular-weight silane coupling agents, and the fluorine-based solvent (C) containing a compound represented by the following formula: CR1R2 = CR3R4 (C1) (In formula (C1), R1 represents a hydrogen atom, R2 represents a hydrogen atom, and R3 represents a hydrogen atom; (In the formula, R1 represents a C1-6 perfluoroalkyl group or a fluorine atom, R2 represents a C1-6 perfluoroalkyl group, R3 represents a C1-6 perfluoroalkyl group, and R4 represents a C1-6 perfluoroalkyl group].

Description

Technical Field

[0001] The present invention relates to a surface treatment agent. Background Art

[0002] When certain types of fluorine-containing compounds are used for surface treatment of a substrate, excellent water repellency, oil repellency, stain resistance, etc. can be provided. A layer obtained from a surface treatment composition containing a fluorine-containing compound can be applied to various substrates such as glass, plastic, fiber, building materials, etc. as a so-called functional thin film. In Patent Document 1, a surface treatment agent containing a silane compound having a perfluoro(poly)ether group is described.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: International Publication No. 2014 / 069592

[0006] Patent Document 2: International Publication No. 2020 / 066533 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] An object of the present invention is to provide a surface treatment agent capable of achieving a surface treatment layer having good heat resistance.

[0009] Means for Solving the Problems

[0010] The present invention includes the following embodiments.

[0011] [1] A surface treatment agent comprising:

[0012] A silane compound (A) having a fluorinated polyether group;

[0013] A low molecular weight fluorine-containing compound or a low molecular weight silane compound (B); and

[0014] A fluorine-based solvent (C),

[0015] The above-mentioned low molecular weight fluorine-containing compound or low molecular weight silane compound (B) includes one or more selected from low molecular weight fluorine-containing compounds having an ether bond or an aromatic group and low molecular weight silane coupling agents,

[0016] The above-mentioned fluorine-based solvent (C) includes a compound represented by the following formula:

[0017] CR 1 R 2 =CR 3 R 4 (C1)

[0018] [In formula (C1),

[0019] R 1 represents C 1-6 perfluoroalkyl or a fluorine atom,

[0020] R 2 represents C 1-6 perfluoroalkyl,

[0021] R 3 represents C 1-6 perfluoroalkyl,

[0022] R 4 represents C 1-6 perfluoroalkyl.]

[0023] [2] The surface treatment agent according to [1], wherein

[0024] the fluorinated polyether group-containing silane compound (A) described above contains at least a compound represented by the following formula (1) or formula (2):

[0025] R F1 α -X A -R Si β (1)

[0026] R Si γ -X A -R F2 -X A -R Si γ (2)

[0027] [In the formula:

[0028] R F1 is independently, each time it appears, R f1 -R F -O q - or a fluoroalkyl group;

[0029] R F2 is -Rf 2 p -R F -O q - or a fluoroalkylene group;

[0030] R f1 is independently, each time it appears, a C 1-16 alkyl group that may be substituted by one or more fluorine atoms;

[0031] Rf 2 is a C 1-6 alkylene group that may be substituted by one or more fluorine atoms;

[0032] R F is, each time it appears, independently divalent fluoro polyether group;

[0033] p is 0 or 1;

[0034] q is, each time it appears, independently 0 or 1;

[0035] R Si is, each time it appears, independently monovalent group containing Si atom bonded with hydroxyl group, hydrolyzable group, hydrogen atom or monovalent organic group;

[0036] At least one R Si is monovalent group containing Si atom bonded with hydroxyl group or hydrolyzable group;

[0037] X A are, independently of each other, single bond or divalent to decavalent organic group;

[0038] α is an integer from 1 to 9;

[0039] β is an integer from 1 to 9;

[0040] γ is, independently of each other, an integer from 1 to 9.

[0041] [3] The surface treating agent according to [1] or [2], wherein

[0042] the content rate of the above-mentioned silane compound (A) containing fluoro polyether group is 0.01% by mass or more and 5% by mass or less based on the total amount of the surface treating agent.

[0043] [4] The surface treating agent according to any one of [1] to [3], wherein

[0044] the above-mentioned low molecular weight fluorine-containing compound or low molecular weight silane compound (B) contains one or more selected from low molecular weight fluorine-containing compound (B-1) having ether bond, low molecular weight fluorine-containing compound (B-2) having aromatic group, and low molecular weight silane coupling agent (B-3).

[0045] [5] The surface treating agent according to [4], wherein

[0046] the content of the above-mentioned low molecular weight fluorine-containing compound (B-1) is 2 parts by mass or more and 1,000 parts by mass or less based on 1 part by mass of the above-mentioned silane compound (A) containing fluoro polyether group.

[0047] [6] The surface treating agent according to [4] or [5], wherein

[0048] With respect to 100 parts by mass of the fluorinated polyether group-containing silane compound (A), the content of the low molecular weight fluorine compound (B-2) is 1 part by mass or more and 50 parts by mass or less.

[0049] [7] The surface treatment agent according to any one of [4] to [6], wherein

[0050] With respect to 100 parts by mass of the fluorinated polyether group-containing silane compound (A), the content of the low molecular weight silane coupling agent (B-3) is 1 part by mass or more and 50 parts by mass or less.

[0051] [8] The surface treatment agent according to any one of [1] to [7], wherein

[0052] The boiling point of the fluorine-based solvent (C) is 100 °C or higher.

[0053] [9] A laminate having a glass substrate and a surface treatment layer,

[0054] The surface treatment layer is formed of the surface treatment agent according to any one of [1] to [8].

[0055]

[10] The laminate according to [9], wherein

[0056] The thickness of the surface treatment layer is 5 nm or more and 50 nm or less.

[0057]

[11] The laminate according to [9] or

[10] , wherein

[0058] The content rate of the alkaline earth metal contained in the glass substrate is 0.7 atomic % or more.

[0059]

[12] A kitchen utensil comprising the laminate according to any one of [9] to

[11] .

[0060] Effects of the Invention

[0061] The surface treatment agent of the present invention can achieve a surface treatment layer having good heat resistance. Detailed Description of the Invention

[0062] The surface treatment agent of the present invention contains:

[0063] A fluorinated polyether group-containing silane compound (A);

[0064] A low molecular weight fluorine compound or a low molecular weight silane compound (B); and

[0065] A fluorine-based solvent (C),

[0066] The above-mentioned low molecular weight fluorine-containing compound or low molecular weight silane compound (B) contains one or more selected from low molecular weight fluorine-containing compounds having an ether bond or an aromatic group and low molecular weight silane coupling agents.

[0067] The above-mentioned fluorine-based solvent (C) is a compound represented by the following formula:

[0068] CR 1 R 2 =CR 3 R 4 (C1)

[0069] [In formula (C1),

[0070] R 1 represents C 1-6 perfluoroalkyl or a fluorine atom,

[0071] R 2 represents C 1-6 perfluoroalkyl,

[0072] R 3 represents C 1-6 perfluoroalkyl,

[0073] R 4 represents C 1-6 perfluoroalkyl.]

[0074] The surface treatment agent of the present invention can achieve a surface treatment layer with good heat resistance, and preferably can form a surface treatment layer with good heat resistance even after long-term storage.

[0075] (Silane compound (A) containing a fluorinated polyether group)

[0076] The above-mentioned silane compound (A) containing a fluorinated polyether group is a compound containing at least a fluorinated polyether group and a silane, preferably a compound containing at least a fluorinated polyether group and a hydrolyzable silyl group, and more preferably contains at least one compound represented by the following formula (1) or formula (2):

[0077] R F1 α -X A -R Si β (1)

[0078] R Si γ -X A -R F2 -X A -R Si γ (2)

[0079] [In the formula:

[0080] R F1 is, each time it appears, independently of one another, R f1 -R F -O q -;

[0081] R F2 is -Rf 2 p -R F -O q -;

[0082] R f1 is, each time it appears, independently of one another, an alkyl group having 1 or more fluorine atoms substituted thereon and being a C 1-16 alkyl group;

[0083] Rf 2 is an alkylene group having 1 or more fluorine atoms substituted thereon and being a C 1-6 alkylene group;

[0084] R F is, each time it appears, independently of one another, a divalent fluorinated polyether group;

[0085] p is 0 or 1;

[0086] q is, each time it appears, independently of one another, 0 or 1;

[0087] R Si is, each time it appears, independently of one another, a monovalent group containing a Si atom bonded to a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent organic group;

[0088] At least one R Si is a monovalent group containing a Si atom bonded to a hydroxyl group or a hydrolyzable group;

[0089] X A are, independently of one another, a single bond or a divalent to decavalent organic group;

[0090] α is an integer from 1 to 9;

[0091] β is an integer from 1 to 9;

[0092] γ is, independently of one another, an integer from 1 to 9.].

[0093] As used in this specification, the "hydrolyzable group" means a group capable of undergoing a hydrolysis reaction, that is, a group capable of detaching from the main skeleton of a compound through a hydrolysis reaction. Examples of the hydrolyzable group include -OR j , -OCOR j , -O-N=CR j 2, -NR j 2, -NHR j, -NCO, halogen (in these formulas, R j represents a substituted or unsubstituted C 1－4 alkyl group), etc., and preferably -OR j (i.e., alkoxy group). Examples of R j include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, etc.; and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, especially unsubstituted alkyl groups, are preferred, and methyl or ethyl is more preferred. The hydroxyl group in the hydrolyzable silyl group is not particularly limited and may be generated by hydrolysis of the hydrolyzable group.

[0094] When used in this specification, an "organic group" refers to a monovalent group containing carbon. As the organic group, unless otherwise specified, it may be a hydrocarbon group or its derivative. A derivative of a hydrocarbon group refers to a group having one or more N, O, S, Si, amide group, sulfonyl group, siloxanyl group, carbonyl group, carbonyloxy group, etc. at the end or in the molecular chain of the hydrocarbon group. Among them, when only denoted as "organic group", it means a monovalent organic group. In addition, a "divalent organic group" refers to a divalent group containing carbon. As such a divalent organic group, there is no particular limitation, and examples thereof include divalent groups formed by further removing one hydrogen atom from the organic group.

[0095] When used in this specification, a "hydrocarbon group" is a group containing carbon and hydrogen and refers to a group formed by removing one hydrogen atom from a hydrocarbon. As this hydrocarbon group, there is no particular limitation, and examples thereof include C 1－20 hydrocarbon groups, such as aliphatic hydrocarbon groups, aromatic hydrocarbon groups, etc. The above-mentioned "aliphatic hydrocarbon group" can be any of linear, branched or cyclic, and can also be any of saturated or unsaturated. In addition, the hydrocarbon group may contain one or more ring structures. The above-mentioned hydrocarbon group may have one or more substituents.

[0096] When used in this specification, as a substituent of the "hydrocarbon group", there is no particular limitation, and examples thereof include a halogen atom, a C 1－6 alkyl group that can be substituted by one or more halogen atoms, a C 2－6 alkenyl group, a C 2－6 alkynyl group, a C 3－10 cycloalkyl group, a C 3－10 unsaturated cycloalkyl group, a 5- to 10-membered heterocyclic group, a 5- to 10-membered unsaturated heterocyclic group, a C 6－10 aryl group, and a 5- to 10-membered heteroaryl group, etc.

[0097] When used in this specification, as the "alkyl group", unless otherwise specified, examples thereof include C 1－12 (preferably C 1－6 , more preferably C 1－3, further preferably, the alkyl group in C1) (e.g., methyl, ethyl, propyl, isopropyl). This "alkyl group" can be linear or branched, preferably linear. Additionally, this "alkyl group" can contain functional groups.

[0098] In the above formula (1), R F1 is independently, each time it appears, R f1 -R F -O q - or fluoroalkyl. In one embodiment, R F1 is preferably R f1 -R F -O q -. In another embodiment, R F1 is preferably fluoroalkyl. When R F1 is R f1 -R F -O q -, the compound represented by formula (1) contains a fluoropolyether group and is equivalent to a silane compound containing a fluoropolyether group.

[0099] In the above formula (2), R F2 is -Rf 2 p -R F -O q - or fluoroalkylene. In one embodiment, R F2 is preferably Rf 2 p-R F -O q -. In another embodiment, R F2 is preferably fluoroalkylene. When R F2 is Rf 2 p-R F -O q -, the compound represented by formula (2) contains a fluoropolyether group and is equivalent to a silane compound containing a fluoropolyether group.

[0100] In the above formula, Rf 1 is independently, each time it appears, a C 1－16 alkyl group that can be substituted with one or more fluorine atoms.

[0101] The "C 1－16 alkyl group" in the above C 1－16 alkyl group that can be substituted with one or more fluorine atoms can be linear or branched, preferably a linear or branched C 1－6 alkyl group, especially a C 1－3 alkyl group, more preferably a linear C 1－6 alkyl group, especially a C 1－3 alkyl group.

[0102] The above Rf 1 is preferably a C alkyl substituted with one or more fluorine atoms 1－16 alkyl group, more preferably CF2H-C 1－15 perfluoroalkylene group, still more preferably C 1－16 perfluoroalkyl group.

[0103] The above C 1－16 perfluoroalkyl group may be linear or branched, preferably linear or branched C 1－6 perfluoroalkyl group, especially C 1－3 perfluoroalkyl group, more preferably linear C 1－6 perfluoroalkyl group, especially C 1－3 perfluoroalkyl group, specifically -CF3, -CF2CF3 or -CF2CF2CF3.

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

[0105] The above C alkylene group that may be substituted with one or more fluorine atoms 1－6 in the "C alkylene group" 1－6 alkylene group may be linear or branched, preferably linear or branched C 1－3 alkylene group, more preferably linear C 1－3 alkylene group.

[0106] The above Rf 2 is preferably a C alkylene group substituted with one or more fluorine atoms 1－6 alkylene group, more preferably C 1－6 perfluoroalkylene group, still more preferably C 1－3 perfluoroalkylene group.

[0107] The above C 1－6 perfluoroalkylene group may be linear or branched, preferably linear or branched C 1－3 perfluoroalkylene group, more preferably linear C 1－3 perfluoroalkylene group, specifically -CF2-, -CF2CF2- or -CF2CF2CF2-.

[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 independently 0 or 1 each time it appears. In one embodiment, q is 0. In another embodiment, q is 1.

[0110] In the above formulas (1) and (2), RF A divalent fluorinated polyether group that is independent at each occurrence.

[0111] R F Preferably includes a group represented by the following formula:

[0112] -(OC h1 R Fa 2h1 ) h3 -(OCH2R Fa 2h2－2 ) h4 -

[0113] [In the formula:

[0114] R Fa Is independently a hydrogen atom, a fluorine atom or a chlorine atom at each occurrence,

[0115] h1 is an integer from 1 to 6,

[0116] h2 is an integer from 4 to 8,

[0117] h3 is an integer of 0 or more,

[0118] h4 is an integer of 0 or more,

[0119] Wherein, the sum of h3 and h4 is 1 or more, preferably 2 or more, more preferably 5 or more, and the order of existence of each repeating unit marked with h3 and h4 and enclosed in parentheses is arbitrary in the formula.

[0120] In one embodiment, R F Is linear or branched. R F Is preferably a group represented by the following formula:

[0121] -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3R Fa ) d -(OC2F4) e -(OCF2) f -

[0122] [In the formula,

[0123] R Fa Is independently a hydrogen atom, a fluorine atom or a chlorine atom at each occurrence,

[0124] a, b, c, d, e, and f are each independently an integer from 0 to 200, and the sum of a, b, c, d, e, and f is 1 or more. The order of existence of each repeating unit labeled with a, b, c, d, e, or f and enclosed in parentheses is arbitrary in the formula. Among them, all R Fa When being a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or more.].

[0125] R Fa is preferably a hydrogen atom or a fluorine atom, more preferably a fluorine atom. Among them, all R Fa When being a hydrogen atom or a chlorine atom, at least one of a, b, c, e, and f is 1 or more.

[0126] a, b, c, d, e, and f are preferably each independently an integer from 0 to 100.

[0127] The sum of a, b, c, d, e, and f is preferably 5 or more, more preferably 10 or more, and for example, can be 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, further preferably 60 or less, and for example, can be 50 or less or 30 or less.

[0128] These repeating units can be linear, branched, or can contain a ring structure. For example, -(OC6F 12 )- can be -(OCF2CF2CF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2CF2CF2)-, -(OCF2CF(CF3)CF2CF2CF2)-, -(OCF2CF2CF(CF3)CF2CF2)-, -(OCF2CF2CF2CF(CF3)CF2)-, -(OCF2CF2CF2CF2CF(CF3))-, etc. -(OC5F 10 )- can be -(OCF2CF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2CF2)-, -(OCF2CF(CF3)CF2CF2)-, -(OCF2CF2CF(CF3)CF2)-, -(OCF2CF2CF2CF(CF3))-, etc. -(OC4F8)- can be any of -(OCF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2)-, -(OCF2CF(CF3)CF2)-, -(OCF2CF2CF(CF3))-, -(OC(CF3)2CF2)-, -(OCF2C(CF3)2)-, -(OCF(CF3)CF(CF3))-, -(OCF(C2F5)CF2)-, and -(OCF2CF(C2F5))-. -(OC3F6)-(i.e., R in the above formula Fais any of -(OCF2CF2CF2)-, -(OCF(CF3)CF2)-, and -(OCF2CF(CF3))-. -(OC2F4)- can be any of -(OCF2CF2)- and -(OCF(CF3))-.

[0129] In one embodiment, the repeating unit is linear. By making the repeating unit linear, the surface slidability, wear durability, etc. of the surface treatment layer can be improved.

[0130] In one embodiment, the repeating unit is branched. By making the repeating unit branched, the kinetic friction coefficient of the surface treatment layer can be increased.

[0131] In one embodiment, R F may include a ring structure.

[0132] The ring structure may be a three-membered ring, four-membered ring, five-membered ring, or six-membered ring described below.

[0133]

[0134] [In the formula, * represents the bonding position.]

[0135] The ring structure is preferably a four-membered ring, five-membered ring, or six-membered ring, more preferably a four-membered ring or six-membered ring.

[0136] The repeating unit having a ring structure is preferably the following unit.

[0137]

[0138] [In the formula, * represents the bonding position.]

[0139] In one embodiment, the repeating unit is linear. By making the repeating unit linear, the surface slidability, wear durability, etc. of the surface treatment layer can be improved.

[0140] In one embodiment, the repeating unit is branched. By making the repeating unit branched, the kinetic friction coefficient of the surface treatment layer can be increased.

[0141] In one embodiment, R F is independently, each time it appears, a group represented by any one of the following formulas (f1) to (f6).

[0142] -(OC3F6) d -(OC2F4) e -(f1)

[0143] [In the formula, d is an integer from 1 to 200, and e is 0 or 1.];

[0144] -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f -(f2)

[0145] [wherein, c and d are each independently an integer of 0 or more and 30 or less, and e and f are each independently an integer of 1 or more and 200 or less,

[0146] the sum of c, d, e and f is 2 or more,

[0147] the order of presence of each repeating unit with a subscript c, d, e or f enclosed in parentheses is arbitrary in the formula.];

[0148] -(R 6 -R 7 ) g -(f3)

[0149] [wherein, R 6 is OCF2 or OC2F4,

[0150] R 7 is a group selected from OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of 2 or 3 groups independently selected from these groups,

[0151] g is an integer of 2 to 100.];

[0152] -(R 6 -R 7 ) g -R r -(R 7′ -R 6′ ) g′ -(f4)

[0153] [wherein, R 6 is OCF2 or OC2F4,

[0154] R 7 is a group selected from OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of 2 or 3 groups independently selected from these groups,

[0155] R 6′ is OCF2 or OC2F4,

[0156] R 7′is a group selected from OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 or a combination of two or three groups independently selected from these groups,

[0157] g is an integer from 2 to 100,

[0158] g′ is an integer from 2 to 100,

[0159] R r is

[0160]

[0161] (wherein, * represents the bonding position).];

[0162] -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f -(f5)

[0163] [wherein, e is an integer from 1 to 200, a, b, c, d, and f are each independently an integer from 0 to 200, and the order of existence of each repeating unit marked with a, b, c, d, e, or f and enclosed in parentheses is arbitrary in the formula.]

[0164] -(OC6F 12 ) a -(OC5F 10 ) b -(OC4F8) c -(OC3F6) d -(OC2F4) e -(OCF2) f -(f6)

[0165] [wherein, f is an integer from 1 to 200, a, b, c, d, and e are each independently an integer from 0 to 200, and the order of existence of each repeating unit marked with a, b, c, d, e, or f and enclosed in parentheses is arbitrary in the formula.]

[0166] In the above formula (f1), d is preferably an integer from 5 to 200, more preferably an integer from 10 to 100, still more preferably an integer from 15 to 50, for example, an integer from 25 to 35. OC3F6 in the above formula (f1) is preferably (OCF2CF2CF2), (OCF(CF3)CF2), or (OCF2CF(CF3)), more preferably (OCF2CF2CF2). (OC2F4) in the above formula (f1) is preferably (OCF2CF2) or (OCF(CF3)), more preferably (OCF2CF2). In one embodiment, e is 0. In another embodiment, e is 1.

[0167] In the above formula (f2), e and f are each independently preferably an integer from 5 to 200, more preferably an integer from 10 to 200. In addition, the sum of c, d, e, and f is preferably 5 or more, more preferably 10 or more, and can be, for example, 15 or more, or 20 or more. In one embodiment, the above formula (f2) is preferably -(OCF2CF2CF2CF2) c -(OCF2CF2CF2) d -(OCF2CF2) e -(OCF2) f -the group shown. In another embodiment, formula (f2) can be -(OC2F4) e -(OCF2) f -the group shown.

[0168] In the above formula (f3), R 6 is preferably OC2F4. In the above (f3), R 7Preferably a group selected from OC2F4, OC3F6 and OC4F8, or a combination of 2 or 3 groups independently selected from these groups, more preferably a group selected from OC3F6 and OC4F8. As a combination of 2 or 3 groups independently selected from OC2F4, OC3F6 and OC4F8, there is no particular limitation, and examples thereof include -OC2F4OC3F6-, -OC2F4OC4F8-, -OC3F6OC2F4-, -OC3F6OC3F6-, -OC3F6OC4F8-, -OC4F8OC4F8-, -OC4F8OC3F6-, -OC4F8OC2F4-, -OC2F4OC2F4OC3F6-, -OC2F4OC2F4OC4F8-, -OC2F4OC3F6OC2F4-, -OC2F4OC3F6OC3F6-, -OC2F4OC4F8OC2F4-, -OC3F6OC2F4OC2F4-, -OC3F6OC2F4OC3F6-, -OC3F6OC3F6OC2F4- and -OC4F8OC2F4OC2F4-. In the above formula (f3), g is preferably an integer of 3 or more, more preferably an integer of 5 or more. The above g is preferably an integer of 50 or less. In the above formula (f3), OC2F4, OC3F6, OC4F8, OC5F 10 and OC6F 12 can be any of straight-chain or branched-chain, preferably straight-chain. In this embodiment, the above formula (f3) is preferably -(OC2F4-OC3F6) g - or -(OC2F4-OC4F8) g -.

[0169] In the above formula (f4), the meanings of R 6 , R 7 and g are the same as those described in the above formula (f3), and have the same embodiments. The meanings of R 6′ , R 7′ and g' are the same as the meanings of R 6 , R 7 and g described in the above formula (f3), respectively, and have the same embodiments. R r is preferably

[0170]

[0171] [wherein, * represents the bonding position.],

[0172] more preferably

[0173]

[0174] [wherein, * represents the bonding position.].

[0175] 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.

[0176] 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.

[0177] In one embodiment, the above R F is the group represented by the above formula (f1).

[0178] In one embodiment, the above R F is the group represented by the above formula (f2).

[0179] In one embodiment, the above R F is the group represented by the above formula (f3).

[0180] In one embodiment, the above R F is the group represented by the above formula (f4).

[0181] In one embodiment, the above R F is the group represented by the above formula (f5).

[0182] In one embodiment, the above R F is the group represented by the above formula (f6).

[0183] In one embodiment, regarding the fluorinated polyether group-containing silane compound contained in the above surface treatment layer, from the viewpoint of the slidability of the surface treatment layer, it preferably contains the structure represented by the above formula (f1), (f2), (f3), (f5) or (f6), more preferably contains the structure represented by the above formula (f1) or (f2), and further preferably contains the structure represented by the above formula (f1).

[0184] In another embodiment, the fluorinated polyether group-containing silane compound contained in the above surface treatment layer preferably contains the structure represented by the above formula (f1), (f2), (f3), (f4), (f5) or (f6), more preferably contains the structure represented by the above formula (f1) or (f2), and further preferably contains the structure represented by the above formula (f2).

[0185] In the above R FIn this case, 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, further 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 slidability, wear durability, and chemical resistance of the surface treatment layer obtained from the compound can be further improved. The smaller the e / f ratio, the more the slidability and wear durability of the surface treatment layer are improved. 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 the stability of the compound is improved.

[0186] R F1 The fluoroalkyl group shown is a group in which the hydrogen atoms contained in the alkyl group are replaced by fluorine atoms, and it can be linear or branched. The above R F1 The fluoroalkyl group shown is preferably C 1－50 fluoroalkyl group, more preferably C 1－20 fluoroalkyl group, further preferably C 1－16 fluoroalkyl group, for example, it can be C 1－10 fluoroalkyl group, further C 1－6 fluoroalkyl group, especially C 1－3 fluoroalkyl group. In one embodiment, the fluoroalkyl group shown by R F1 is a perfluoroalkyl group in which all hydrogen atoms are replaced by fluorine atoms. In this embodiment, the above perfluoroalkyl group is preferably a linear or branched C 1－50 perfluoroalkyl group, more preferably a linear or branched C 1－20 perfluoroalkyl group, further preferably a linear or branched C 1－16 perfluoroalkyl group, for example, it can be a linear or branched C 1－10 perfluoroalkyl group, further a linear or branched C 1－6 perfluoroalkyl group, especially a linear or branched C 1－3 perfluoroalkyl group.

[0187] R F2 The fluoroalkylene group shown is a group in which the hydrogen atoms contained in the alkylene group are replaced by fluorine atoms, and it can be linear or branched. The above R F2 The fluoroalkylene group shown is preferably C 1－50 fluoroalkylene group, more preferably C 1－20 fluoroalkylene group, further preferably C 1－16 fluoroalkylene group, for example, it can be C 1－10 fluoroalkylene group, further C 1－6 fluoroalkylene group, especially C 1－3 fluoroalkylene group. In one embodiment, R F2The fluoroalkylene group shown is a perfluoroalkylene group in which all hydrogen atoms are replaced by fluorine atoms. In this embodiment, the above perfluoroalkylene group is preferably a linear or branched C 1－50 perfluoroalkylene group, more preferably a linear or branched C 1－20 perfluoroalkylene group, still more preferably a linear or branched C 1－16 perfluoroalkylene group, for example, it can be a linear or branched C 1－10 perfluoroalkylene group, further a linear or branched C 1－6 perfluoroalkylene group, particularly a linear or branched C 1－3 perfluoroalkylene group.

[0188] In the above fluoropolyether group-containing silane compound, the number average molecular weight of the R F1 and R F2 parts is not particularly limited. For example, it can be 500 to 30,000, preferably 1,500 to 30,000, more preferably 2,000 to 10,000. In this specification, the number average molecular weight of R F1 and R F2 is the value measured by 19 F-NMR.

[0189] In another mode, the number average molecular weight of the R F1 and R F2 parts is 500 to 30,000, preferably 1,000 to 20,000, more preferably 2,000 to 15,000, still more preferably 2,000 to 10,000. For example, it can be 3,000 to 6,000.

[0190] In another mode, the number average molecular weight of the R F1 and R F2 parts can be 4,000 to 30,000, preferably 5,000 to 10,000, more preferably 6,000 to 10,000.

[0191] In the above formulas (1) and (2), each R Si appearing each time is independently a monovalent group containing a Si atom bonded to a hydroxyl group, a hydrolyzable group, a hydrogen atom or a monovalent organic group, and at least one R Si is a monovalent group containing a Si atom bonded to a hydroxyl group or a hydrolyzable group.

[0192] Here, the "hydrolyzable group" refers to a group that can undergo a hydrolysis reaction, that is, a group that can be detached from the main skeleton of the compound through a hydrolysis reaction. Examples of the hydrolyzable group include -OR j , -OCOR j , -O-N=CR j2, -NR j 2, -NHR j , -NCO, halogen (in these formulas, R j represents a substituted or unsubstituted C 1－4 alkyl group), etc.

[0193] In a preferred embodiment, R Si is a monovalent group containing a Si atom bonded to a hydroxyl group or a hydrolyzable group.

[0194] In a preferred embodiment, R Si is a group represented by the following formula (S1), formula (S2), formula (S3), or formula (S4).

[0195]

[0196] -SiR 11 n1 R 12 3-n1 (S2)

[0197] -SiR a1 k1 R b1 l1 R c1 m1 (S3)

[0198] -CR d1 k2 R e1 l2 R f1 m2 (S4)

[0199] -NR g1 R h1 (S5)

[0200] In the above formulas, R 11 is independently a hydroxyl group or a hydrolyzable group each time it appears.

[0201] R 11 is preferably independently a hydrolyzable group each time it appears.

[0202] R 11 is preferably independently -OR j , -OCOR j , -O-N = CR j 2, -NR j 2, -NHR j , -NCO or halogen (in these formulas, R j represents a substituted or unsubstituted C 1-4 alkyl group), more preferably -ORj (i.e., alkoxy group). As R j , unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, etc., and substituted alkyl groups such as chloromethyl can be listed. Among these, alkyl groups, particularly unsubstituted alkyl groups, are preferred, and methyl or ethyl is more preferred. In one embodiment, R j is methyl, and in another embodiment, R j is ethyl.

[0203] In the above formula, R 12 is independently a hydrogen atom or a monovalent organic group each time it appears. The monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0204] In R 12 , the monovalent organic group is preferably a C 1-20 alkyl group, more preferably a C 1-6 alkyl group, and further preferably methyl.

[0205] In the above formula, n1 is independently an integer from 0 to 3 in each (SiR 11 n1 R 12 3-n1 ) unit. Among them, when R Si is the group represented by formula (S1) or formula (S2), the R Si part at the ends of formula (1) and formula (2) (hereinafter, sometimes simply referred to as the "end part" of formula (1) and formula (2)) has at least one (SiR 11 n1 R 12 3-n1 ) unit in which n1 is 1 to 3. That is, in this end part, all n1 are not simultaneously 0. In other words, in the end part of formula (1) and formula (2), there is at least one Si atom bonded to a hydroxyl group or a hydrolyzable group.

[0206] n1 is independently preferably an integer from 1 to 3 in each (SiR 11 n1 R 12 3－n1 ) unit, more preferably 2 to 3, and further preferably 3.

[0207] In the above formula, X 11 is independently a single bond or a divalent organic group each time it appears. The divalent organic group is preferably -R 28 -O x -R 29 -(wherein R 28 and R 29 are independently a single bond or a C 1－20Alkylene, where x is 0 or 1.). The C 1－20 The alkylene can be straight-chain or branched-chain, preferably straight-chain. The C 1－20 The alkylene is preferably C 1－10 alkylene, more preferably C 1－6 alkylene, even more preferably C 1－3 alkylene.

[0208] In one embodiment, X 11 is independently, each time it appears, -C 1－6 alkylene -O-C 1－6 alkylene - or -O-C 1－6 alkylene -.

[0209] In a preferred embodiment, X 11 is independently, each time it appears, a single bond or a straight-chain C 1－6 alkylene, preferably a single bond or a straight-chain C 1－3 alkylene, more preferably a single bond or a straight-chain C 1－2 alkylene, even more preferably a straight-chain C 1－2 alkylene.

[0210] In the above formula, R 13 is independently, each time it appears, a hydrogen atom or a monovalent organic group. The monovalent organic group is preferably C 1－20 alkyl. The C 1－20 alkyl can be straight-chain or branched-chain, preferably straight-chain.

[0211] In a preferred embodiment, R 13 is independently, each time it appears, a hydrogen atom or a straight-chain C 1－6 alkyl, preferably a hydrogen atom or a straight-chain C 1－3 alkyl, preferably a hydrogen atom or a methyl group.

[0212] In the above formula, t is independently, each time it appears, an integer of 2 or more.

[0213] In a preferred embodiment, t is independently, each time it appears, an integer from 2 to 10, preferably an integer from 2 to 6.

[0214] In the above formula, R 14 is independently, each time it appears, a hydrogen atom, a halogen atom or -X 11 -SiR 11 n1 R 12 3－n1 . The halogen atom is preferably an iodine atom, a chlorine atom or a fluorine atom, more preferably a fluorine atom. In a preferred embodiment, R 14 is a hydrogen atom.

[0215] In the above formula, R 15 is, each time it appears, independently of one another, a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms or an alkyleneoxy group having 1 to 6 carbon atoms.

[0216] In one embodiment, R 15 is, each time it appears, independently of one another, an oxygen atom, an alkylene group having 1 to 6 carbon atoms or an alkyleneoxy group having 1 to 6 carbon atoms.

[0217] In a preferred embodiment, R 15 is a single bond.

[0218] In one embodiment, formula (S1) is the following formula (S1-a).

[0219]

[0220] [In the formula,

[0221] R 11 , R 12 , R 13 , X 11 and n1 have the same meanings as described in the above formula (S1);

[0222] t1 and t2 are, each time they appear, independently of one another, integers of 1 or more, preferably integers of 1 to 10, more preferably integers of 2 to 10, for example integers of 1 to 5 or integers of 2 to 5;

[0223] The order of presence of each repeating unit in which t1 and t2 are marked and enclosed in parentheses is arbitrary in the formula. ]

[0224] In a preferred embodiment, formula (S1) is the following formula (S1-b).

[0225]

[0226] [In the formula, R 11 , R 12 , R 13 , X 11 , n1 and t have the same meanings as described in the above formula (S1). ]

[0227] In the above formula, R a1 is, each time it appears, independently of one another, -Z 1 -SiR 21 p1 R 22 q1 R 23 r1 .

[0228] The above Z 1Each occurrence is independently an oxygen atom or a divalent organic group. Hereinafter, it is denoted as Z 1 The right side of the structure of 1 is combined with (SiR 21 p1 R 22 q1 R 23 r1 ).

[0229] In a preferred embodiment, Z 1 is a divalent organic group.

[0230] In a preferred embodiment, Z 1 does not include the case where a siloxane bond is formed with the Si atom to which Z 1 is bonded. Preferably, in formula (S3), (Si-Z 1 -Si) does not contain a siloxane bond.

[0231] The above Z 1 is preferably C 1－6 alkylene, -(CH2) z1 -O-(CH2) z2 -(wherein, z1 is an integer from 0 to 6, for example, an integer from 1 to 6, z2 is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH2) z3 -substituted phenyl-(CH2) z4 -(wherein, z3 is an integer from 0 to 6, for example, an integer from 1 to 6, z4 is an integer from 0 to 6, for example, an integer from 1 to 6). The above C 1－6 alkylene can be straight-chain or branched-chain, preferably straight-chain. These groups can be substituted with, for example, one or more substituents selected from a fluorine atom, C 1－6 alkyl, C 2－6 alkenyl and C 2－6 alkynyl, and is preferably unsubstituted.

[0232] In a preferred embodiment, Z 1 is C 1－6 alkylene or -(CH2) z3 -substituted phenyl-(CH2) z4 -, preferably -substituted phenyl-(CH2) z4 -. When Z 1 is this group, the light resistance, especially the ultraviolet resistance, is further improved.

[0233] In other preferred embodiments, the above Z 1 is C 1－3 alkylene. In one embodiment, Z 1 can be -CH2CH2CH2-. In another embodiment, Z 1It can be -CH2CH2-.

[0234] The above-mentioned R 21 is independently -Z each time it appears 1′ -SiR 21′ p1′ R 22′ q1′ R 23′ r1′ .

[0235] The above-mentioned Z 1′ is independently an oxygen atom or a divalent organic group each time it appears. Among them, the following is denoted as Z 1′ The right side of the structure is combined with (SiR 21′ p1′ R 22′ q1′ R 23′ r1′ ).

[0236] In a preferred embodiment, Z 1′ is a divalent organic group.

[0237] In a preferred embodiment, Z 1′ does not include the case where a siloxane bond is formed with the Si atom to which Z 1′ is bonded. Preferably, in formula (S3), (Si-Z 1′ -Si) does not contain a siloxane bond.

[0238] The above-mentioned Z 1′ is preferably C 1－6 alkylene, -(CH2) z1′ -O-(CH2) z2′ -(wherein, z1' is an integer from 0 to 6, for example, an integer from 1 to 6, z2' is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH2) z3′ -substituted phenyl-(CH2) z4′ -(wherein, z3' is an integer from 0 to 6, for example, an integer from 1 to 6, z4' is an integer from 0 to 6, for example, an integer from 1 to 6). The above-mentioned C 1－6 alkylene can be straight-chain or branched-chain, preferably straight-chain. These groups can be substituted with, for example, one or more substituents selected from a fluorine atom, C 1－6 alkyl, C 2－6 alkenyl, and C 2－6 alkynyl, and is preferably unsubstituted.

[0239] In a preferred embodiment, Z 1′ is C 1－6 alkylene or -(CH2) z3′ -substituted phenyl-(CH2)z4′ -, preferably - phenylene - (CH2)z 4′ -. When Z 1′ is the above group, the light resistance, especially the ultraviolet resistance, is further improved.

[0240] In other preferred embodiments, the above Z 1′ is C 1－3 alkylene. In one embodiment, Z 1′ can be -CH2CH2CH2-. In another embodiment, Z 1′ can be -CH2CH2-.

[0241] The above R 21′ is independently -Z 1" -SiR 22" q1" R 23" r1" .

[0242] The above Z 1" is independently an oxygen atom or a divalent organic group each time it appears. In addition, the right side of the structure denoted as Z 1" is combined with (SiR 22" q1" R 23" r1" ).

[0243] In a preferred embodiment, Z 1" is a divalent organic group.

[0244] In a preferred embodiment, Z 1" does not include the case where a siloxane bond is formed with the Si atom to which Z 1" is bonded. Preferably, (Si-Z 1" -Si) in formula (S3) does not contain a siloxane bond.

[0245] The above Z 1" is preferably C 1－6 alkylene, -(CH2) z1" -O-(CH2) z2" -(where z1" is an integer from 0 to 6, for example an integer from 1 to 6, z2" is an integer from 0 to 6, for example an integer from 1 to 6) or -(CH2) z3" -phenylene-(CH2) z4" -(where z3" is an integer from 0 to 6, for example 1 to 6, z4" is an integer from 0 to 6, for example 1 to 6). The above C 1－6 alkylene can be straight-chain or branched-chain, preferably straight-chain. These groups can be substituted, for example, with a selected from a fluorine atom, C 1－6Alkyl, C 2－6 alkenyl, and C 2－6 one or more substituents of alkynyl, preferably unsubstituted.

[0246] In a preferred embodiment, Z 1" is C 1－6 alkylene or -(CH2) z3" -phenylene-(CH2) z4" -, preferably -phenylene-(CH2) z4" -. When Z 1" is the above group, the light resistance, especially the ultraviolet resistance, is further improved.

[0247] In other preferred embodiments, the above Z 1" is C 1－3 alkylene. In one embodiment, Z 1" can be -CH2CH2CH2-. In another embodiment, Z 1" can be -CH2CH2-.

[0248] The above R 22" is independently a hydroxyl group or a hydrolyzable group each time it appears.

[0249] The above R 22" is preferably independently a hydrolyzable group each time it appears.

[0250] The above R 22" is preferably independently -OR j , -OCOR j , -O-N=CR j 2, -NR j 2, -NHR j , -NCO or halogen (in these formulas, R j represents a substituted or unsubstituted C 1－4 alkyl), more preferably -OR j (i.e., an alkoxy group). As R j , unsubstituted alkyls such as methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, and substituted alkyls such as chloromethyl can be mentioned. Among these, alkyl, especially unsubstituted alkyl, is preferred, and methyl or ethyl is more preferred. In one embodiment, R j is methyl, and in another embodiment, R j is ethyl.

[0251] The above R 23" is independently a hydrogen atom or a monovalent organic group each time it appears. This monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0252] In the above R 23" , the monovalent organic group is preferably a C 1－20 alkyl group, more preferably a C 1－6 alkyl group, and still more preferably a methyl group.

[0253] The above q1” is independently an integer from 0 to 3 each time it appears, and the above r1” is independently an integer from 0 to 3 each time it appears. In addition, the sum of q1” and r1” is 3 in the (SiR 22" q1" R 23" r1" ) unit.

[0254] The above q1” is preferably independently an integer from 1 to 3, more preferably 2 to 3, and still more preferably 3 in each (SiR 22" q1" R 23" r1" ) unit.

[0255] The above R 22′ is independently a hydroxyl group or a hydrolyzable group each time it appears.

[0256] R 22′ is preferably independently a hydrolyzable group each time it appears.

[0257] R 22′ is preferably independently -OR j , -OCOR j , -O-N=CR j 2, -NR j 2, -NHR j , -NCO or a halogen (in these formulas, R j represents a substituted or unsubstituted C 1－4 alkyl group), and more preferably -OR j (i.e., an alkoxy group). As R j , unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl, and substituted alkyl groups such as chloromethyl can be mentioned. Among these, an alkyl group, particularly an unsubstituted alkyl group, is preferred, and methyl or ethyl is more preferred. In one embodiment, R j is methyl, and in another embodiment, R j is ethyl.

[0258] The above R 23′ is independently a hydrogen atom or a monovalent organic group each time it appears. This monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0259] In R 23′ , the monovalent organic group is preferably a C 1－20Alkyl, more preferably C 1－6 alkyl, still more preferably methyl.

[0260] Each occurrence of p1' is independently an integer from 0 to 3, each occurrence of q1' is independently an integer from 0 to 3, and each occurrence of r1' is independently an integer from 0 to 3. Among them, the sum of p', q1' and r1' is 3 in the (SiR 21′ p1′ R 22′ q1′ R 23′ r1′ ) unit.

[0261] In one embodiment, p1' is 0.

[0262] In one embodiment, p1' is independently an integer from 1 to 3, an integer from 2 to 3, or 3 in each (SiR 21′ p1′ R 22′ q1′ R 23′ r1′ ) unit. In a preferred embodiment, p1' is 3.

[0263] In one embodiment, q1' is independently an integer from 1 to 3, preferably an integer from 2 to 3, and still more preferably 3 in each (SiR 21′ p1′ R 22′ q1′ R 23′ r1′ ) unit.

[0264] In one embodiment, p1' is 0, and q1' is independently an integer from 1 to 3, preferably an integer from 2 to 3, and still more preferably 3 in each (SiR 21′ p1′ R 22′ q1′ R 23′ r1′ ) unit.

[0265] Each occurrence of the above R 22 is independently a hydroxyl group or a hydrolyzable group.

[0266] R 22 Preferably, each occurrence is independently a hydrolyzable group.

[0267] R 22 Preferably, each occurrence is independently -OR j , -OCOR j , -O-N=CR j 2, -NRj 2. -NHR j , -NCO or halogen (in these formulas, R j represents a substituted or unsubstituted C 1－4 alkyl), more preferably -OR j (i.e., alkoxy). As R j , unsubstituted alkyls such as methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, etc., and substituted alkyls such as chloromethyl can be listed. Among these, alkyl, especially unsubstituted alkyl, is preferred, and methyl or ethyl is more preferred. In one embodiment, R j is methyl, and in another embodiment, R j is ethyl.

[0268] Each occurrence of the above R 23 is independently a hydrogen atom or a monovalent organic group. The monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0269] In R 23 , the monovalent organic group is preferably C 1－20 alkyl, more preferably C 1－6 alkyl, and even more preferably methyl.

[0270] Each occurrence of the above p1 is independently an integer from 0 to 3, each occurrence of q1 is independently an integer from 0 to 3, and each occurrence of r1 is independently an integer from 0 to 3. Among them, the sum of p1, q1, and r1 is 3 in the (SiR 21 p1 R 22 q1 R 23 r1 ) unit.

[0271] In one embodiment, p1 is 0.

[0272] In one embodiment, p1 is independently an integer from 1 to 3, an integer from 2 to 3, or 3 in each (SiR 21 p1 R 22 q1 R 23 r1 ) unit. In a preferred embodiment, p1 is 3.

[0273] In one embodiment, q1 is independently an integer from 1 to 3, preferably an integer from 2 to 3, and more preferably 3 in each (SiR 21 p1 R 22 q1 R 23 r1 ) unit.

[0274] In one embodiment, p1 is 0, and q1 is independently an integer from 1 to 3, preferably an integer from 2 to 3, and more preferably 3, in each (SiR 21 p1 R 22 q1 R 23 r1 ) unit.

[0275] In the above formula, R b1 is independently a hydroxyl group or a hydrolyzable group each time it appears.

[0276] The above R b1 is preferably independently a hydrolyzable group each time it appears.

[0277] The above R b1 is preferably independently -OR j , -OCOR j , -O-N=CR j 2, -NR j 2, -NHR j , -NCO or a halogen (in these formulas, R j represents a substituted or unsubstituted C 1－4 alkyl), more preferably -OR j (i.e., an alkoxy group). As R j , unsubstituted alkyls such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl, and substituted alkyls such as chloromethyl can be mentioned. Among these, alkyl, especially unsubstituted alkyl, is preferred, and methyl or ethyl is more preferred. In one embodiment, R j is methyl, and in another embodiment, R j is ethyl.

[0278] In the above formula, R c1 is independently a hydrogen atom or a monovalent organic group each time it appears. The monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0279] Among the above R c1 , the monovalent organic group is preferably C 1－20 alkyl, more preferably C 1－6 alkyl, and further preferably methyl.

[0280] The above k1 is independently an integer from 0 to 3 each time it appears, l1 is independently an integer from 0 to 3 each time it appears, and m1 is independently an integer from 0 to 3 each time it appears. Among them, the sum of k1, l1, and m1 in (SiR a1 k1 Rb1 l1 R c1 m1 ) unit is 3.

[0281] In one embodiment, k1 is a1 k1 R b1 l1 R c1 m1 ) units are independently an integer of 1 to 3, preferably 2 or 3, more preferably 3. In a preferred embodiment, k1 is 3.

[0282] In the above formula (1) and formula (2), R Si In the case of a group represented by formula (S3), it is preferred that at least two Si atoms to which a hydroxyl group or a hydrolyzable group is bonded exist at the terminal parts of formula (1) and formula (2).

[0283] In a preferred embodiment, the group represented by formula (S3) has -Z 1 -SiR 22 q1 R 23 r1 (wherein, q1 is an integer of 1 to 3, preferably 2 or 3, more preferably 3, and r1 is an integer of 0 to 2.) 1′ -SiR 22′ q1′ R 23′ r1′ (wherein, q1′ is an integer of 1 to 3, preferably 2 or 3, more preferably 3, and r1′ is an integer of 0 to 2.) or -Z 1" -SiR 22" q1" R 23" r1" (wherein, q1" is an integer of 1 to 3, preferably 2 or 3, more preferably 3, and r1" is an integer of 0 to 2.) 1 , Z 1′ , Z 1" , R 22 , R 23 , R 22′ , R 23′ , R 22" and R 23" The meaning is the same as above.

[0284] In a preferred embodiment, in formula (S3) there is R 21′ In the case of at least one, preferably all, R 21′ Among them, q1" is an integer of 1 to 3, preferably 2 or 3, and more preferably 3.

[0285] In a preferred embodiment, when R is present in formula (S3) 21 , in at least one, preferably in all of the Rs 21 , p1′ is 0, and q1′ is an integer of 1 to 3, preferably 2 or 3, more preferably 3.

[0286] In a preferred embodiment, when R is present in formula (S3) a1 , in at least one, preferably in all of the Rs a1 , p1 is 0, and q1 is an integer of 1 to 3, preferably 2 or 3, more preferably 3.

[0287] In a preferred embodiment, in formula (S3), k1 is 2 or 3, preferably 3, p1 is 0, and q1 is 2 or 3, preferably 3.

[0288] R d1 is, each time it appears, independently of one another, —Z 2 —CR 31 p2 R 32 q2 R 33 r2 .

[0289] Z 2 is, each time it appears, independently of one another, a single bond, an oxygen atom or a divalent organic group. Among them, the right side of the structure denoted as Z 2 is bonded to (CR 31 p2 R 32 q2 R 33 r2 ).

[0290] In a preferred embodiment, Z 2 is a divalent organic group.

[0291] The above-mentioned Z 2 is preferably C 1－6 alkylene, —(CH2) z5 —O—(CH2) z6 — (wherein, z5 is an integer of 0 to 6, for example, an integer of 1 to 6, and z6 is an integer of 0 to 6, for example, an integer of 1 to 6), or, —(CH2) z7 —substituted phenylene—(CH2) z8 — (wherein, z7 is an integer of 0 to 6, for example, an integer of 1 to 6, and z8 is an integer of 0 to 6, for example, an integer of 1 to 6). The above-mentioned C 1－6 alkylene may be linear or branched, preferably linear. These groups may be substituted, for example, with a group selected from a fluorine atom, C 1－6 alkyl, C2－6 One or more substituents in alkenyl and C 2－6 in alkynyl are preferably unsubstituted.

[0292] In a preferred embodiment, Z 2 is C 1－6 alkylene or -(CH2) z7 -phenylene-(CH2) z8 -, preferably -phenylene-(CH2) z8 -. When Z 2 is this group, the light resistance, especially the ultraviolet resistance, is further improved.

[0293] In other preferred embodiments, the above Z 2 is C 1－3 alkylene. In one embodiment, Z 2 can be -CH2CH2CH2-. In another embodiment, Z 2 can be -CH2CH2-.

[0294] R 31 is independently, each time it appears, -Z 2′ -CR 32′ q2′ R 33′ r2′ .

[0295] Z 2′ is independently, each time it appears, a single bond, an oxygen atom or a divalent organic group. Among them, the right side of the structure denoted as Z 2′ is bonded to (CR 32′ q2′ R 33′ r2′ ).

[0296] The above Z 2′ is preferably C 1－6 alkylene, -(CH2) z5′ -O-(CH2) z6′ -(wherein, z5' is an integer from 0 to 6, such as an integer from 1 to 6, and z6' is an integer from 0 to 6, such as an integer from 1 to 6) or -(CH2) z7′ -phenylene-(CH2) z8′ -(wherein, z7' is an integer from 0 to 6, such as an integer from 1 to 6, and z8' is an integer from 0 to 6, such as an integer from 1 to 6). The above C 1－6 alkylene can be straight-chain or branched-chain, preferably straight-chain. These groups can be substituted, for example, with a group selected from a fluorine atom, C 1－6 alkyl, C 2－6 alkenyl and C 2－6One or more substituents in the alkynyl group are preferably unsubstituted.

[0297] In a preferred embodiment, Z 2′ is C 1－6 alkylene or -(CH2) z7′ -phenylene-(CH2) z8′ -, preferably -phenylene-(CH2) z8′ -. Z 2′ When it is this group, the light resistance, especially the ultraviolet resistance, is further improved.

[0298] In other preferred embodiments, the above Z 2′ is C 1－3 alkylene. In one embodiment, Z 2′ can be -CH2CH2CH2-. In another embodiment, Z 2′ can be -CH2CH2-.

[0299] The above R 32′ is independently -Z 3 -SiR 34 n2 R 35 3－n2 .

[0300] The above Z 3 is independently a single bond, an oxygen atom or a divalent organic group each time it appears. Among them, the right side of the structure denoted as Z 3 is combined with (SiR 34 n2 R 35 3－n2 ).

[0301] In one embodiment, Z 3 is an oxygen atom.

[0302] In one embodiment, Z 3 is a divalent organic group.

[0303] The above Z 3 is preferably C 1－6 alkylene, -(CH2) z5" -O-(CH2) z6" -(wherein, z5" is an integer from 0 to 6, such as an integer from 1 to 6, and z6" is an integer from 0 to 6, such as an integer from 1 to 6) or -(CH2) z7" -phenylene-(CH2) z8" -(wherein, z7" is an integer from 0 to 6, such as an integer from 1 to 6, and z8" is an integer from 0 to 6, such as an integer from 1 to 6). The above C 1－6The alkylene group can be linear or branched, preferably linear. These groups can be substituted, for example, with one or more substituents selected from a fluorine atom, C 1－6 alkyl group, C 2－6 alkenyl group, and C 2－6 alkynyl group, and is preferably unsubstituted.

[0304] In a preferred embodiment, Z 3 is C 1－6 alkylene or -(CH2) z7" -phenylene-(CH2) z8" -, preferably -phenylene-(CH2) z8" -. When Z 3 is this group, the light resistance, especially the ultraviolet resistance, is further improved.

[0305] In other preferred embodiments, the above-mentioned Z 3 is C 1－3 alkylene. In one embodiment, Z 3 can be -CH2CH2CH2-. In another embodiment, Z 3 can be -CH2CH2-.

[0306] The above-mentioned R 34 is independently a hydroxyl group or a hydrolyzable group each time it appears.

[0307] R 34 is preferably independently a hydrolyzable group each time it appears.

[0308] R 34 is preferably independently -OR j , -OCOR j , -O-N=CR j 2, -NR j 2, -NHR j , -NCO or a halogen (in these formulas, R j represents a substituted or unsubstituted C 1－4 alkyl group), more preferably -OR j (i.e., an alkoxy group). Examples of R j include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl, and substituted alkyl groups such as chloromethyl. Among these, alkyl groups, especially unsubstituted alkyl groups, are preferred, and methyl or ethyl is more preferred. In one embodiment, R j is methyl, and in another embodiment, R j is ethyl.

[0309] The above-mentioned R 35Each occurrence is independently a hydrogen atom or a monovalent organic group. The monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0310] In the above R 35 the monovalent organic group is preferably a C 1－20 alkyl group, more preferably a C 1－6 alkyl group, and still more preferably a methyl group.

[0311] In the above formula, n2 is independently an integer from 0 to 3 in each (SiR 34 n2 R 35 3－n2 ) unit. Wherein, when R Si is the group represented by formula (S4), at the terminal portions of formula (1) and formula (2), there is at least 1 (SiR 34 n2 R 35 3－n2 ) unit in which n2 is 1 to 3. That is, at this terminal portion, all n2 are not simultaneously 0. In other words, at the terminal portions of formula (1) and formula (2), there is at least 1 Si atom bonded to a hydroxyl group or a hydrolyzable group.

[0312] n2 is preferably an integer from 1 to 3, more preferably 2 to 3, and still more preferably 3, independently in each (SiR 34 n2 R 35 3－n2 ) unit.

[0313] The above R 33′ is each independently a hydrogen atom, a hydroxyl group or a monovalent organic group at each occurrence. The monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0314] In the above R 33′ the monovalent organic group is preferably a C 1－20 alkyl group or -(C s H 2s ) t1 -(O-C s H 2s ) t2 (wherein s is an integer from 1 to 6, preferably an integer from 2 to 4, t1 is 1 or 0, preferably 0, t2 is an integer from 1 to 20, preferably an integer from 2 to 10, and still more preferably an integer from 2 to 6), more preferably a C 1－20 alkyl group, and still more preferably a C 1－6 alkyl group, and particularly preferably a methyl group.

[0315] In one embodiment, R 33′ is a hydroxyl group.

[0316] In another embodiment, R 33′ is a monovalent organic group, preferably a C 1－20 alkyl group, more preferably a C 1－6 alkyl group.

[0317] Each occurrence of q2′ is independently an integer from 0 to 3, and each occurrence of r2′ is independently an integer from 0 to 3. Among them, the sum of q2′ and r2′ is 3 in the (CR 32′ q2′ R 33′ r2′ ) unit.

[0318] Each occurrence of q2′ is independently preferably an integer from 1 to 3, more preferably 2 to 3, and even more preferably 3 in each (CR 32′ q2′ R 33′ r2′ ) unit.

[0319] Each occurrence of R 32 is independently —Z 3 —SiR 34 n2 R 35 3－n2 . This —Z 3 —SiR 34 n2 R 35 3－n2 has the same meaning as described in the above R 32′ .

[0320] Each occurrence of the above R 33 is independently a hydrogen atom, a hydroxyl group or a monovalent organic group. This monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0321] In the above R 33 , the monovalent organic group is preferably a C 1－20 alkyl group or —(C s H 2s ) t1 —(O—C s H 2s ) t2 (wherein, each occurrence of s is independently an integer from 1 to 6, preferably an integer from 2 to 4, t1 is 1 or 0, preferably 0, t2 is an integer from 1 to 20, preferably an integer from 2 to 10, and more preferably an integer from 2 to 6).), more preferably a C 1－20 alkyl group, even more preferably a C 1－6 alkyl group, and particularly preferably a methyl group.

[0322] In one embodiment, R 33 is a hydroxyl group.

[0323] In another embodiment, R 33 is a monovalent organic group, preferably a C 1－20 alkyl group, more preferably a C 1－6 alkyl group.

[0324] Each occurrence of p2 above is independently an integer from 0 to 3, each occurrence of q2 is independently an integer from 0 to 3, and each occurrence of r2 is independently an integer from 0 to 3. Additionally, the sum of p2, q2, and r2 is 3 in each (CR 31 p2 R 32 q2 R 33 r2 ) unit.

[0325] In one embodiment, p2 is 0.

[0326] In one embodiment, p2 is independently an integer from 1 to 3, an integer from 2 to 3, or 3 in each (CR 31 p2 R 32 q2 R 33 r2 ) unit. In a preferred embodiment, p2 is 3.

[0327] In one embodiment, q2 is independently an integer from 1 to 3, preferably an integer from 2 to 3, more preferably 3 in each (CR 31 p2 R 32 q2 R 33 r2 ) unit.

[0328] In one embodiment, p2 is 0 and q2 is independently an integer from 1 to 3, preferably an integer from 2 to 3, further preferably 3 in each (CR 31 p2 R 32 q2 R 33 r2 ) unit.

[0329] Each occurrence of the above R e1 is independently -Z 3 -SiR 34 n2 R 35 3－n2 . This -Z 3 -SiR34 n2 R 35 3－n2 has the same meaning as that described in the above R 32′ .

[0330] The above R f1 is, each time it appears, independently a hydrogen atom, a hydroxyl group or a monovalent organic group. The monovalent organic group is a monovalent organic group other than the above hydrolyzable group.

[0331] In the above R f1 , the monovalent organic group is preferably a C 1－20 alkyl group or -(C s H 2s ) t1 -(O-C s H 2s ) t2 (wherein s is an integer from 1 to 6, preferably an integer from 2 to 4, t1 is 1 or 0, preferably 0, t2 is an integer from 1 to 20, preferably an integer from 2 to 10, more preferably an integer from 2 to 6).), more preferably a C 1－20 alkyl group, further preferably a C 1－6 alkyl group, particularly preferably a methyl group.

[0332] In one embodiment, R f1 is a hydroxyl group.

[0333] In another embodiment, R f1 is a monovalent organic group, preferably a C 1－20 alkyl group, more preferably a C 1－6 alkyl group.

[0334] The above k2 is, each time it appears, independently an integer from 0 to 3, l2 is, each time it appears, independently an integer from 0 to 3, and m2 is, each time it appears, independently an integer from 0 to 3. Additionally, the sum of k2, l2 and m2 is 3 in the (CR d1 k2 R e1 l2 R f1 m2 ) unit.

[0335] In the above formulas (1) and (2), when R Si is the group represented by formula (S4), it is preferred that at least 2 Si atoms bonded to a hydroxyl group or a hydrolyzable group are present at the terminal portions of formulas (1) and (2).

[0336] In one embodiment, when R Si is the group represented by formula (S4), n2 is 1 to 3, preferably 2 or 3, more preferably 3 (SiR34 n2 R 35 3－n2 ) The units are present in more than 2, for example 2 to 27, preferably 2 to 9, more preferably 2 to 6, still more preferably 2 to 3, and particularly preferably 3 at each end portion of formulas (1) and (2).

[0337] In a preferred embodiment, R is present in formula (S4). 32′ In the case of, in at least one, preferably in all R 32′ among them, n2 is an integer of 1 to 3, preferably 2 or 3, more preferably 3.

[0338] In a preferred embodiment, R is present in formula (S4). 32 In the case of, in at least one, preferably in all R 32 among them, n2 is an integer of 1 to 3, preferably 2 or 3, more preferably 3.

[0339] In a preferred embodiment, R is present in formula (S4). e1 In the case of, in at least one, preferably in all R a1 among them, n2 is an integer of 1 to 3, preferably 2 or 3, more preferably 3.

[0340] In a preferred embodiment, in formula (S4), k2 is 0, l2 is 2 or 3, preferably 3, and n2 is 2 or 3, preferably 3.

[0341] The above R g1 and R h1 are each independently -Z 4 -SiR 11 n1 R 12 3－n1 , -Z 4 -SiR a1 k1 R b1 l1 R c1 m1 , -Z 4 -CR d1 k2 R e1 l2 R f1 m2 . Among them, R 11 , R 12 , R a1 , R b2 , R c1 , R d1 , R e1 , Rf1 , n1, k1, l1, m1, k2, l2, and m2 have the same meanings as described above.

[0342] In a preferred embodiment, R g1 and R h1 are each independently selected from -Z 4 -SiR 11 n1 R 12 3－n 1.

[0343] The above-mentioned Z 4 is each independently a single bond, an oxygen atom, or a divalent organic group each time it appears. Among them, the following is denoted as Z 4 The right side of the structure is combined with (SiR 11 n1 R 12 3－n1 ).

[0344] In one embodiment, Z 4 is an oxygen atom.

[0345] In one embodiment, Z 4 is a divalent organic group.

[0346] The above-mentioned Z 4 is preferably C 1－6 alkylene, -(CH2) z5" -O-(CH2) z6" -(wherein, z5" is an integer from 0 to 6, for example, an integer from 1 to 6, z6" is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH2) z7" -substituted phenyl-(CH2) z8" -(wherein, z7" is an integer from 0 to 6, for example, an integer from 1 to 6, z8" is an integer from 0 to 6, for example, an integer from 1 to 6). The above-mentioned C 1－6 alkylene can be straight-chain or branched-chain, preferably straight-chain. These groups can be substituted with, for example, one or more substituents selected from a fluorine atom, C 1－6 alkyl, C 2－6 alkenyl, and C 2－6 alkynyl, and is preferably unsubstituted.

[0347] In a preferred embodiment, Z 4 is C 1－6 alkylene or -(CH2) z7" -substituted phenyl-(CH2) z8" -, preferably -(CH2) z8" -substituted phenyl-(CH2) 3In the case of this group, the light resistance, particularly the ultraviolet resistance, is further improved.

[0348] In other preferred embodiments, the above Z 4 is C 1－3 alkylene. In one embodiment, Z 4 can be -CH2CH2CH2-. In another embodiment, Z 4 can be -CH2CH2-.

[0349] In one embodiment, R Si is a group represented by formula (S2), formula (S3), formula (S4), or formula (S5). These compounds can form a surface treatment layer having high surface slidability.

[0350] In one embodiment, R Si is a group represented by formula (S3), formula (S4), or formula (S5). These compounds have multiple hydrolyzable groups at one end, so they strongly adhere to the substrate and can form a surface treatment layer having high wear durability.

[0351] In one embodiment, R Si is a group represented by formula (S3) or formula (S4). These compounds have multiple hydrolyzable groups branched from one Si atom or C atom at one end, so they can form a surface treatment layer having even higher wear durability.

[0352] In one embodiment, R Si is a group represented by formula (S1).

[0353] In one embodiment, R Si is a group represented by formula (S2).

[0354] In one embodiment, R Si is a group represented by formula (S3).

[0355] In one embodiment, R Si is a group represented by formula (S4).

[0356] In one embodiment, R Si is a group represented by formula (S5).

[0357] In the above formulas (1) and (2), X A can be understood as mainly providing a fluorinated polyether moiety (R F1 and R F2 ) that provides water repellency and surface slidability, etc., and a part (R Si) The connecting part that is connected. Therefore, as long as the compounds shown in Formula (1) and Formula (2) can exist stably, this X A can be a single bond or any group.

[0358] In the above Formula (1), α is an integer from 1 to 9, and β is an integer from 1 to 9. These α and β can vary according to the A valence of X. The sum of α and β is the same as the A valence of X. For example, when X A is a 10-valent organic group, the sum of α and β is 10. For example, α can be 9 and β can be 1, α can be 5 and β can be 5, or α can be 1 and β can be 9. Additionally, when X A is a 2-valent organic group, α and β are 1.

[0359] In the above Formula (2), γ is an integer from 1 to 9. γ can vary according to the A valence of X. That is, γ is the value obtained by subtracting 1 from the A valence of X.

[0360] X A are each independently a single bond or a 2- to 10-valent organic group,

[0361] The above X A among the 2- to 10-valent organic groups is preferably a 2- to 8-valent organic group. In one embodiment, the 2- to 10-valent organic group is preferably a 2- to 4-valent organic group, more preferably a 2-valent organic group. In another embodiment, the 2- to 10-valent organic group is preferably a 3- to 8-valent organic group, more preferably a 3- to 6-valent organic group.

[0362] In one embodiment, X A is a single bond or a 2-valent organic group, α is 1, and β is 1.

[0363] In one embodiment, X A is a single bond or a 2-valent organic group, and γ is 1.

[0364] In one embodiment, X A is a 3- to 6-valent organic group, α is 1, and β is 2 to 5.

[0365] In one embodiment, X A is a 3- to 6-valent organic group, and γ is 2 to 5.

[0366] In one embodiment, X A is a 3-valent organic group, α is 1, and β is 2.

[0367] In one embodiment, X A is a 3-valent organic group, and γ is 2.

[0368] X A When X is a single bond or a divalent organic group, Formula (1) and Formula (2) are represented by the following Formula (1') and Formula (2').

[0369] R F1 -X A -R Si (1’)

[0370] R Si -X A -R F2 -X A -R Si (2’)

[0371] In one embodiment, X A is a single bond.

[0372] In another embodiment, X A is a divalent organic group.

[0373] In one embodiment, as X A , for example, a single bond or a divalent organic group represented by the following formula can be cited:

[0374] -(R 51 ) p5 -(X 51 ) q5 -

[0375] [In the formula,

[0376] R 51 represents a single bond, -(CH2) s5 -, or ortho-phenylene, meta-phenylene or para-phenylene, preferably -(CH2) s5 -,

[0377] s5 is an integer from 1 to 20, preferably an integer from 1 to 6, more preferably an integer from 1 to 3, and even more preferably 1 or 2,

[0378] X 51 represents -(X 52 ) 15 -,

[0379] X 52 each independently represents, each time it appears, a group selected from -O-, -S-, ortho-phenylene, meta-phenylene or para-phenylene, -C(O)O-, -Si(R 53 )2-, -(Si(R 53 )2O) m5 -Si(R 53 )2-, -CONR 54-, -O-CONR 54 -, -NR 54 - and -(CH2) n5 - groups,

[0380] R 53 each independently represents phenyl, C 1-6 alkyl or C 1-6 alkoxy each time it appears, preferably phenyl or C 1-6 alkyl, more preferably methyl,

[0381] R 54 each independently represents a hydrogen atom, phenyl or C 1-6 alkyl (preferably methyl) each time it appears,

[0382] m5 is each independently an integer from 1 to 100, preferably an integer from 1 to 20,

[0383] n5 is each independently an integer from 1 to 20, preferably an integer from 1 to 6, more preferably an integer from 1 to 3,

[0384] l5 is an integer from 1 to 10, preferably an integer from 1 to 5, more preferably an integer from 1 to 3,

[0385] p5 is 0 or 1,

[0386] q5 is 0 or 1,

[0387] wherein at least one of p5 and q5 is 1, and the order of presence of each repeating unit marked with p5 or q5 and enclosed in parentheses is arbitrary].

[0388] wherein X A (typically the hydrogen atom of X A ) can be substituted by one or more substituents selected from a fluorine atom, C 1－3 alkyl and C 1－3 fluoroalkyl. In a preferred embodiment, X A is not substituted by these groups.

[0389] In a preferred embodiment, the above X A are each independently -(R 51 ) p5 -(X 51 ) q5 -R 52 -. R 52 represents a single bond, -(CH2) t5 - or ortho-phenylene, meta-phenylene or para-phenylene, preferably -(CH2) t5-. t5 is an integer from 1 to 20, preferably an integer from 2 to 6, more preferably an integer from 2 to 3. Among them, R 52 (typically R 52 's hydrogen atom) can be substituted by one or more substituents selected from a fluorine atom, C 1－3 alkyl, and C 1－3 fluoroalkyl. In a preferred embodiment, R 56 is not substituted by these groups.

[0390] Preferably, the above X A are each independently:

[0391] a single bond,

[0392] C 1－20 alkylene,

[0393] -R 51 -X 53 -R 52 -, or

[0394] -X 54 -R 52 -

[0395] [In the formula, R 51 and R 52 have the same meaning as above,

[0396] X 53 represents

[0397] -O-,

[0398] -S-,

[0399] -C(O)O-,

[0400] -CONR 54 -,

[0401] -O-CONR 54 -,

[0402] -Si(R 53 )2-,

[0403] -(Si(R 53 )2O) m5 -Si(R 53 )2-,

[0404] -O-(CH2) u5 -(Si(R 53 )2O) m5 -Si(R 53 )2-,

[0405] -O-(CH2) u5-Si(R 53 )2-O-Si(R 53 )2-CH2CH2-Si(R 53 )2-O-Si(R 53 )2-、

[0406] -O-(CH2) u5 -Si(OCH3)2OSi(OCH3)2-,

[0407] -CONR 54 -(CH2) u5 -(Si(R 53 )2O) m5 -Si(R 53 )2-、

[0408] -CONR 54 -(CH2) u5 -N(R 54 )-,or

[0409] -CONR 54 -(o-phenylene, m-phenylene or p-phenylene)-Si(R 53 )2-

[0410] (Where R 53 , R 54 and m5 have the same meaning as above,

[0411] u5 is an integer of 1 to 20, preferably an integer of 2 to 6, and more preferably an integer of 2 to 3. ),

[0412] X 54 express

[0413] -S-,

[0414] -C(O)O-,

[0415] -CONR 54 -

[0416] -O-CONR 54 -

[0417] -CONR 54 -(CH2) u5 -(Si(R 54 )2O) m5 -Si(R 54 )2-、

[0418] -CONR 54 -(CH2) u5 -N(R 54 )-,or

[0419] -CONR 54 -(o-phenylene, m-phenylene or p-phenylene)-Si(R 54 )2-

[0420] (In the formula, each symbol has the same meaning as described above).

[0421] More preferably, the above X A are each independently:

[0422] a single bond,

[0423] C 1－20 alkylene,

[0424] -(CH2) s5 -X 53 -、

[0425] -(CH2) s5 -X 53 -(CH2) t5 -

[0426] -X 54 -、or

[0427] -X 54 -(CH2) t5 -

[0428] [In the formula, X 53 , X 54 , s5 and t5 have the same meaning as described above.].

[0429] More preferably, the above X A are each independently:

[0430] a single bond,

[0431] C 1－20 alkylene,

[0432] -(CH2) s5 -X 53 -(CH2) t5 -、or

[0433] -X 54 -(CH2) t5 -

[0434] [In the formula, each symbol has the same meaning as described above.].

[0435] In a preferred embodiment, the above X A are each independently:

[0436] a single bond,

[0437] C 1－20 alkylene,

[0438] -(CH2) s5 -X 53 -、 or

[0439] -(CH2) s5 -X 53 -(CH2) t5 -

[0440] [In the formula,

[0441] X 53 is -O-, -CONR 54 - or -O-CONR 54 -,

[0442] R 54 independently represents a hydrogen atom, a phenyl group or a C 1－6 alkyl group each time it appears,

[0443] s5 is an integer from 1 to 20,

[0444] t5 is an integer from 1 to 20.].

[0445] In a preferred embodiment, the above X A are independently:

[0446] -(CH2) s5 -O-(CH2) t5 -

[0447] -CONR 54 -(CH2) t5 -

[0448] [In the formula,

[0449] R 54 independently represents a hydrogen atom, a phenyl group or a C 1－6 alkyl group each time it appears,

[0450] s5 is an integer from 1 to 20,

[0451] t5 is an integer from 1 to 20.].

[0452] In one embodiment, the above X A are independently:

[0453] a single bond,

[0454] C 1－20 alkylene,

[0455] -(CH2) s5 -O-(CH2) t5 -、

[0456] -(CH2) s5 -(Si(R 53 )2O) m5 -Si(R 53 )2-(CH2) t5 -,

[0457] -(CH2) s5 -O-(CH2) u5 -(Si(R 53 )2O) m5 -Si(R 53 )2-(CH2) t5 -, or

[0458] -(CH2) s5 -O-(CH2) t5 -Si(R 53 )2-(CH2) u5 -Si(R 53 )2-(C v H 2v )-

[0459] [In the formula, R 53 , m5, s5, t5 and u5 have the same meanings as described above, v5 is an integer of 1 to 20, preferably an integer of 2 to 6, and more preferably an integer of 2 to 3.].

[0460] In the above formula, -(C v H 2v )- can be linear or branched, for example, it can be -CH2CH2-, -CH2CH2CH2-, -CH(CH3)-, -CH(CH3)CH2-.

[0461] The above X A are each independently selected from a fluorine atom, C 1－3 alkyl, and C 1－3 fluoroalkyl (preferably C 1－3 perfluoroalkyl) and substituted with one or more substituents. In one embodiment, X A is unsubstituted.

[0462] In addition, the left side of each of the above X A is bonded to R F1 or R F2 , and the right side is bonded to R Si .

[0463] In one embodiment, X A are each independently other than -O-C 1－6 alkylene. In another embodiment, as X A, for example, the following groups can be listed:

[0464]

[0465]

[0466] [In the formula, R 41 are each independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms or a C 1－6 alkoxy group, preferably a methyl group;

[0467] D is a group selected from the following groups:

[0468] -CH2O(CH2)2-,

[0469] -CH2O(CH2)3-,

[0470] -CF2O(CH2)3-,

[0471] -(CH2)2-,

[0472] -(CH2)3-,

[0473] -(CH2)4-,

[0474] -CONH-(CH2)3-,

[0475] -CON(CH3)-(CH2)3-,

[0476] -CON(Ph)-(CH2)3- (wherein, Ph represents a phenyl group), and

[0477]

[0478] (wherein, R 42 each independently represents a hydrogen atom, a C 1－6 alkyl group or a C 1－6 alkoxy group, preferably represents a methyl group or a methoxy group, more preferably represents a methyl group.)

[0479] E is -(CH2) n - (n is an integer from 2 to 6),

[0480] D is combined with R F1 or R F2 in the main chain of the molecule, and E is combined with R Si .]

[0481] As a specific example of the above X A , for example, the following can be listed:

[0482] A single bond,

[0483] -CH2OCH2-,

[0484] -CH2O(CH2)2-,

[0485] -CH2O(CH2)3-,

[0486] -CH2O(CH2)4-,

[0487] -CH2O(CH2)5-,

[0488] -CH2O(CH2)6-,

[0489] -CH2O(CH2)3Si(CH3)2OSi(CH3)2(CH2)2-,

[0490] -CH2O(CH2)3Si(CH3)2OSi(CH3)2OSi(CH3)2(CH2)2-,

[0491] -CH2O(CH2)3Si(CH3)2O(Si(CH3)2O)2Si(CH3)2(CH2)2-,

[0492] -CH2O(CH2)3Si(CH3)2O(Si(CH3)2O)3Si(CH3)2(CH2)2-,

[0493] -CH2O(CH2)3Si(CH3)2O(Si(CH3)2O) 10 Si(CH3)2(CH2)2-,

[0494] -CH2O(CH2)3Si(CH3)2O(Si(CH3)2O) 20 Si(CH3)2(CH2)2-,

[0495] -CH2OCF2CHFOCF2-,

[0496] -CH2OCF2CHFOCF2CF2-,

[0497] -CH2OCF2CHFOCF2CF2CF2-,

[0498] -CH2OCH2CF2CF2OCF2-,

[0499] -CH2OCH2CF2CF2OCF2CF2-,

[0500] -CH2OCH2CF2CF2OCF2CF2CF2-,

[0501] -CH2OCH2CF2CF2OCF(CF3)CF2OCF2-,

[0502] -CH2OCH2CF2CF2OCF(CF3)CF2OCF2CF2-、

[0503] -CH2OCH2CF2CF2OCF(CF3)CF2OCF2CF2CF2-、

[0504] -CH2OCH2CHFCF2OCF2-、

[0505] -CH2OCH2CHFCF2OCF2CF2-、

[0506] -CH2OCH2CHFCF2OCF2CF2CF2-、

[0507] -CH2OCH2CHFCF2OCF(CF3)CF2OCF2-、

[0508] -CH2OCH2CHFCF2OCF(CF3)CF2OCF2CF2-、

[0509] -CH2OCH2CHFCF2OCF(CF3)CF2OCF2CF2CF2-、

[0510] -CH2OCF2CHFOCF2CF2CF2-C(O)NH-CH2-、

[0511] -CH2OCH2(CH2)7CH2Si(OCH3)2OSi(OCH3)2(CH2)2Si(OCH3)2OSi(OCH3)2(CH2)2-、

[0512] -CH2OCH2CH2CH2Si(OCH3)2OSi(OCH3)2(CH2)3-、

[0513] -CH2OCH2CH2CH2Si(OCH2CH3)2OSi(OCH2CH3)2(CH2)3-、

[0514] -CH2OCH2CH2CH2Si(OCH3)2OSi(OCH3)2(CH2)2-、

[0515] -CH2OCH2CH2CH2Si(OCH2CH3)2OSi(OCH2CH3)2(CH2)2-、

[0516] -(CH2)2-Si(CH3)2-(CH2)2-、

[0517] -CH2-、

[0518] -(CH2)2-、

[0519] -(CH2)3-、

[0520] -(CH2)4-、

[0521] -(CH2)5-、

[0522] -(CH2)6-、

[0523] -CO-、

[0524] -CONH-、

[0525] -CONH-CH2-、

[0526] -CONH-(CH2)2-、

[0527] -CONH-(CH2)3-、

[0528] -CONH-(CH2)4-、

[0529] -CONH-(CH2)5-、

[0530] -CONH-(CH2)6-、

[0531] -CON(CH3)-CH2-、

[0532] -CON(CH3)-(CH2)2-、

[0533] -CON(CH3)-(CH2)3-、

[0534] -CON(CH3)-(CH2)4-、

[0535] -CON(CH3)-(CH2)5-、

[0536] -CON(CH3)-(CH2)6-、

[0537] -CON(Ph)-CH2-(where Ph represents phenyl)、

[0538] -CON(Ph)-(CH2)2-(where Ph represents phenyl)、

[0539] -CON(Ph)-(CH2)3-(where Ph represents phenyl)、

[0540] -CON(Ph)-(CH2)4-(where Ph represents phenyl)、

[0541] -CON(Ph)-(CH2)5-(where Ph represents phenyl)、

[0542] -CON(Ph)-(CH2)6- (wherein Ph represents a phenyl group),

[0543] -CONH-(CH2)2NH(CH2)3-,

[0544] -CONH-(CH2)6NH(CH2)3-,

[0545] -CH2O-CONH-(CH2)3-,

[0546] -CH2O-CONH-(CH2)6-,

[0547] -S-(CH2)3-,

[0548] -(CH2)2S(CH2)3-,

[0549] -CONH-(CH2)3Si(CH3)2OSi(CH3)2(CH2)2-,

[0550] -CONH-(CH2)3Si(CH3)2OSi(CH3)2OSi(CH3)2(CH2)2-,

[0551] -CONH-(CH2)3Si(CH3)2O(Si(CH3)2O)2Si(CH3)2(CH2)2-,

[0552] -CONH-(CH2)3Si(CH3)2O(Si(CH3)2O)3Si(CH3)2(CH2)2-,

[0553] -CONH-(CH2)3Si(CH3)2O(Si(CH3)2O) 10 Si(CH3)2(CH2)2-,

[0554] -CONH-(CH2)3Si(CH3)2O(Si(CH3)2O) 20 Si(CH3)2(CH2)2-,

[0555] -C(O)O-(CH2)3-,

[0556] -C(O)O-(CH2)6-,

[0557] -CH2-O-(CH2)3-Si(CH3)2-(CH2)2-Si(CH3)2-(CH2)2-,

[0558] -CH2-O-(CH2)3-Si(CH3)2-(CH2)2-Si(CH3)2-CH(CH3)-,

[0559] -CH2-O-(CH2)3-Si(CH3)2-(CH2)2-Si(CH3)2-(CH2)3-,

[0560] -CH2-O-(CH2)3-Si(CH3)2-(CH2)2-Si(CH3)2-CH(CH3)-CH2-,

[0561] -OCH2-,

[0562] -O(CH2)3-,

[0563] -OCFHCF2-,

[0564] etc.

[0565] In yet another embodiment, X A is independently of each other a group represented by the formula: -(R 16 ) x1 -(CFR 17 ) y1 -(CH2)Z 1 -. In the formula, x1, y1 and Z 1 are independently of each other integers from 0 to 10, and the sum of x1, y1 and Z 1 is 1 or more, and the order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula.

[0566] In the above formula, R 16 is independently of each other an oxygen atom, a phenylene group, a carbazolylene group, -NR 18 -(in the formula, R 18 represents a hydrogen atom or an organic group) or a divalent organic group. Preferably, R 18 is an oxygen atom or a divalent polar group.

[0567] As the above "divalent polar group", there is no particular limitation, and examples thereof include -C(O)-, -C(=NR 19 )- and -C(O)NR 19 -(in these formulas, R 19 represents a hydrogen atom or a lower alkyl group). The "lower alkyl group" is, for example, an alkyl group having 1 to 6 carbon atoms, such as a methyl group, an ethyl group, or a n-propyl group, and they may be substituted with one or more fluorine atoms.

[0568] In the above formula, R 17Each occurrence is independently a hydrogen atom, a fluorine atom or a lower fluoroalkyl group, preferably a fluorine atom. The "lower fluoroalkyl group" is, for example, a fluoroalkyl group having 1 to 6 carbon atoms, preferably 1 to 3 carbon atoms, preferably a perfluoroalkyl group having 1 to 3 carbon atoms, more preferably trifluoromethyl or pentafluoroethyl, and still more preferably trifluoromethyl.

[0569] In yet another embodiment, as X A Examples may include the following groups:

[0570]

[0571] [In the formula,

[0572] R 41 Are each independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms or a C 1－6 Alkoxy group, preferably methyl;

[0573] In each X A Group, any several of T are the following groups bonded to R F1 Or R F2 Of the molecular backbone:

[0574] -CH2O(CH2)2-,

[0575] -CH2O(CH2)3-,

[0576] -CF2O(CH2)3-,

[0577] -(CH2)2-,

[0578] -(CH2)3-,

[0579] -(CH2)4-,

[0580] -CONH-(CH2)3-,

[0581] -CON(CH3)-(CH2)3-,

[0582] -CON(Ph)-(CH2)3- (wherein, Ph represents a phenyl group), or

[0583]

[0584] [In the formula, R 42 Are each independently a hydrogen atom, an alkyl group of C 1－6 Or a C 1－6 Alkoxy group, preferably methyl or methoxy, more preferably represents methyl. ],

[0585] Several other Ts are bonded to R SiIn the presence of the combination, the remaining Ts are each independently a methyl group, a phenyl group, a C 1－6 alkoxy group, a radical scavenging group or an ultraviolet absorbing group.

[0586] The radical scavenging group may be any group that can scavenge radicals generated by light irradiation, and is not particularly limited. For example, residues of benzophenones, benzotriazoles, benzoates, phenyl salicylates, crotonic acids, malonic esters, organic acrylates, hindered amines, hindered phenols or triazines can be cited.

[0587] The ultraviolet absorbing group may be any group that can absorb ultraviolet rays, and is not particularly limited. For example, residues of benzotriazoles, hydroxydibenzophenones, esters of substituted and unsubstituted benzoic acids or salicylic acid compounds, acrylates or alkoxycinnamates, oxamides, oxanilides, benzoxazinones, benzoxazoles can be cited.

[0588] In a preferred embodiment, as preferred radical scavenging groups or ultraviolet absorbing groups, the following can be cited:

[0589]

[0590] In this embodiment, X A are each independently an organic group with a valence of 3 to 10.

[0591] In another embodiment, as examples of X A , the following groups can be cited:

[0592]

[0593] [In the formula, R 25 , R 26 and R 27 are each independently an organic group with a valence of 2 to 6,

[0594] R 25 is combined with at least one R F1 , R 26 and R 27 are each combined with at least one R Si .]

[0595] In one embodiment, the above R 25 is a single bond, C 1－20 alkylene, C 3－20 cycloalkylene, C 5－20 arylene, -R 57 -X 58 -R 59 -, -X 58 -R 59 - or -R 57-X 58 -。 The above R 57 and R 59 are each independently a single bond, a C 1－20 alkylene group, a C 3－20 cycloalkylene group or a C 5－20 arylene group. The above X 58 is -O-, -S-, -CO-, -O-CO- or -COO-.

[0596] In one embodiment, the above R 26 and R 27 are each independently a hydrocarbon group, or a group having at least 1 atom selected from N, O and S in the end or main chain of the hydrocarbon, and preferably include C 1－6 alkyl group, -R 36 -R 37 -R 36 -, -R 36 -CHR 38 2-, etc. Among them, R 36 are each independently a single bond or an alkyl group having 1 to 6 carbon atoms, preferably an alkyl group having 1 to 6 carbon atoms. R 37 is N, O or S, preferably N or O. R 38 is -R 45 -R 46 -R 45 -, -R 46 -R 45 - or -R 45 -R 46 -. Among them, R 45 are each independently an alkyl group having 1 to 6 carbon atoms. R 46 is N, O or S, preferably O.

[0597] In this embodiment, X A are each independently an organic group having a valence of 3 to 10.

[0598] In another embodiment, as an example of X A the following groups can be cited:

[0599]

[0600] [In the formula, X a is a single bond or a divalent organic group.].

[0601] The above X a is a single bond or a divalent linking group directly bonded to the isocyanuric acid ring. As X a, preferably a single bond, an alkylene group, or a divalent group containing at least one valence bond selected from an ether bond, an ester bond, an amide bond, and a thioether bond, more preferably a single bond, an alkylene group having 1 to 10 carbon atoms, or a divalent organic group having 1 to 10 carbon atoms containing at least one valence bond selected from an ether bond, an ester bond, an amide bond, and a thioether bond.

[0602] As X a , more preferably a group represented by the following formula:

[0603] -(CX 121 X 122 ) x1 -(X a1 ) y1 -(CX 123 X 124 ) z1 -

[0604] (In the formula, X 121 ~X 124 are each independently H, F, OH, or -OSi(OR 121 )3 (in the formula, the three R 121 are each independently an alkyl group having 1 to 4 carbon atoms),

[0605] The above X a1 is -C(=O)NH-, -NHC(=O)-, -O-, -C(=O)O-, -OC(=O)-, -OC(=O)O-, or -NHC(=O)NH- (the left side of each bond is combined with CX 121 X 122 ).

[0606] x1 is an integer from 0 to 10, y1 is 0 or 1, and z1 is an integer from 1 to 10.).

[0607] As the above X a1 , preferably -O- or -C(=O)O-.

[0608] As the above X a , particularly preferably a group represented by the following formula:

[0609] -(CF2) m11 -(CH2) m12 -O-(CH2) m13 -

[0610] (In the formula, m11 is an integer from 1 to 3, m12 is an integer from 1 to 3, and m13 is an integer from 1 to 3.).

[0611] -(CF2) m14 -(CH2) m15 -O-CH2CH(OH)-(CH2)m16 - the groups shown:

[0612] (wherein, m14 is an integer from 1 to 3, m15 is an integer from 1 to 3, and m16 is an integer from 1 to 3.),

[0613] - (CF2) m17 - (CH2) m18 - the groups shown:

[0614] (wherein, m17 is an integer from 1 to 3, and m18 is an integer from 1 to 3.),

[0615] - (CF2) m19 - (CH2) m20 - O - CH2CH(OSi(OCH3)3) - (CH2) m21 - the groups shown:

[0616] (wherein, m19 is an integer from 1 to 3, m20 is an integer from 1 to 3, and m21 is an integer from 1 to 3.), or

[0617] - (CH2) m22 - the groups shown

[0618] (wherein, m22 is an integer from 1 to 3.).

[0619] As the above X a , there is no particular limitation, and specifically, - CH2 -, - C2H4 -, - C3H6 -, - C4H8 -, - C4H8 - O - CH2 -, - CO - O - CH2 - CH(OH) - CH2 -, - (CF2) n5 - (n5 is an integer from 0 to 4), - (CF2) n5 - (CH2) m5 - (n5 and m5 are each independently an integer from 0 to 4), - CF2CF2CH2OCH2CH(OH)CH2 -, - CF2CF2CH2OCH2CH(OSi(OCH3)3)CH2 -, etc.

[0620] In this embodiment, X A are each independently a divalent or trivalent organic group.

[0621] The fluorinated polyether group-containing silane compound represented by the above formula (1) or formula (2) is not particularly limited and may have 5×10 2 ~1×10 5The average molecular weight. Among this range, from the viewpoint of wear durability, it preferably has an average molecular weight of 2,000 to 32,000, more preferably 2,500 to 12,000. Herein, the "average molecular weight" refers to the number-average molecular weight, and the "average molecular weight" is the value measured by 19 F-NMR.

[0622] In a total of 100% by mass of the fluorinated polyether group-containing silane compound (A), the content of the fluorinated polyether group-containing silane compound represented by the above formula (1) or formula (2) is preferably 90% by mass or more and 100% by mass or less, more preferably 95% by mass or more and 100% by mass or less.

[0623] In 100% by mass of the above surface treatment agent, the content of the fluorinated polyether group-containing silane compound (A) is preferably 0.01% by mass or more and 5% by mass or less, more preferably 0.05% by mass or more and 0.2% by mass or less, further preferably 0.07% by mass or more and 0.15% by mass or less, and particularly preferably 0.09% by mass or more and 0.12% by mass or less. By making the content of the fluorinated polyether group-containing silane compound within the above range, higher heat resistance can be obtained.

[0624] In the composition of the present invention, the non-volatile component may be the part obtained by removing the solvent from the total amount of the composition.

[0625] (Low-molecular-weight fluorinated compound or low-molecular-weight silane compound (B))

[0626] Regarding the above low-molecular-weight fluorinated compound or low-molecular-weight silane compound, typically, it represents a low-molecular-weight compound containing a fluorine atom or a low-molecular-weight compound containing a Si atom, and includes one or more selected from low-molecular-weight fluorinated compounds having an ether bond or an aromatic group and low-molecular-weight silane coupling agents. The low-molecular-weight fluorinated compound having an ether bond or an aromatic group may be one or more, and the low-molecular-weight silane coupling agent may also be one or more.

[0627] The present invention should not be limited to being explained by a specific theory, but it is considered that by including the low-molecular-weight fluorinated compound having the above ether bond or aromatic group, the aggregation of the fluorinated polyether group-containing silane compound (A) can be inhibited. As a result, it is considered that a surface treatment layer with good heat resistance can be formed even after long-term storage. In addition, it is considered that since the above low-molecular-weight silane coupling agent has a site that can react with water, it can trap moisture in the surface treatment agent. As a result, it is considered that a surface treatment layer with good heat resistance can be formed even after long-term storage.

[0628] The above-mentioned low-molecular-weight fluorine-containing compound or low-molecular-weight silane compound (B) preferably contains one or more selected from low-molecular-weight fluorine-containing compounds (B-1) having an ether bond, low-molecular-weight fluorine-containing compounds (B-2) having an aromatic group, and low-molecular-weight silane coupling agents (B-3).

[0629] The above-mentioned low-molecular-weight fluorine-containing compound (B-1) having an ether bond is typically a compound having one or more ether bonds and one or more fluorine atoms. Regarding the number of ether bonds contained in the above-mentioned low-molecular-weight fluorine-containing compound (B-1) having an ether bond, in each molecule, it is preferably 1 or more and 2 or less, more preferably 1.

[0630] The number of carbon atoms of the above-mentioned low-molecular-weight fluorine-containing compound (B-1) having an ether bond is preferably 2 or more and 20 or less, more preferably 3 or more and 8 or less, and further preferably 4 or more and 6 or less.

[0631] The above-mentioned low-molecular-weight fluorine-containing compound (B-1) having an ether bond preferably contains a compound represented by the following formula:

[0632] R B1 -O-R b2 (B1)

[0633] [In formula (B1):

[0634] R B1 represents C 1－10 perfluoroalkyl,

[0635] R B2 represents C 1－10 alkyl.].

[0636] The above-mentioned R B1 is C 1－10 perfluoroalkyl, which can be straight-chain or branched-chain, preferably straight-chain or branched-chain C 2－7 perfluoroalkyl, and further preferably straight-chain or branched-chain C 3－6 perfluoroalkyl.

[0637] The above-mentioned R B2 is C 1－10 alkyl, which can be straight-chain or branched-chain, preferably straight-chain or branched-chain C 1－5 alkyl, and further preferably straight-chain or branched-chain C 1－3 alkyl.

[0638] In the total amount of the above-mentioned low-molecular-weight fluorine-containing compound (B-1) having an ether bond, the content of the compound represented by the above formula (B1) is preferably 70% by mass or more and 100% by mass or less, more preferably 80% by mass or more and 100% by mass or less, and further preferably 90% by mass or more and 100% by mass or less.

[0639] Examples of the low molecular weight fluorinated compound (B-1) having an ether bond include methyl perfluoroisobutyl ether, methyl perfluorobutyl ether, ethyl perfluoroisobutyl ether, ethyl perfluorobutyl ether, perfluoroisobutyl methyl ether, and perfluoropentyl methyl ether.

[0640] With respect to 1 part by mass of the fluorinated ether group-containing silane compound (A), the content of the low molecular weight fluorinated compound (B-1) having an ether bond is preferably 2 parts by mass or more and 1,000 parts by mass or less, more preferably 4 parts by mass or more and 600 parts by mass or less.

[0641] The low molecular weight fluorinated compound (B-2) having an aromatic group typically includes a compound containing one or more aromatic groups and fluorine atoms. Examples of the aromatic group include a benzene ring.

[0642] The low molecular weight fluorinated compound (B-2) having an aromatic group preferably includes a compound represented by the following formula:

[0643]

[0644] [In formula (B2):

[0645] R B3 each independently represents a fluorine atom or a C 1－10 perfluoroalkyl group

[0646] nb1 represents an integer of 1 to 6.].

[0647] The C B3 in the above R 1－10 perfluoroalkyl group may be linear or branched, and is preferably a linear or branched C 1－5 perfluoroalkyl group, more preferably a linear or branched C 1－3 perfluoroalkyl group. In one embodiment, R B3 is preferably a fluorine atom. In another embodiment, R B3 is preferably a linear or branched C 1－3 perfluoroalkyl group.

[0648] nb1 is an integer of 1 to 6, preferably 3 to 6, and particularly preferably 6.

[0649] In the total amount of the low molecular weight fluorinated compound (B-2) having an aromatic group, the content of the compound represented by the above formula (B2) is preferably 70% by mass or more and 100% by mass or less, more preferably 80% by mass or more and 100% by mass or less, and further preferably 90% by mass or more and 100% by mass or less.

[0650] As the above-mentioned low-molecular-weight fluorine-containing compound (B-2) having an aromatic group, hexafluorobenzene can be cited.

[0651] Regarding the content of the above-mentioned low-molecular-weight fluorine-containing compound (B-2) having an aromatic group, in one embodiment, relative to 100 parts by mass of the above-mentioned silane compound (A) containing a fluoroether group, it is preferably 1 part by mass or more and 50 parts by mass or less, more preferably 5 parts by mass or more and 30 parts by mass or less. In another embodiment, relative to 100 parts by mass of the above-mentioned silane compound (A) containing a fluoroether group, the content of the above-mentioned low-molecular-weight fluorine-containing compound (B-2) having an aromatic group is preferably 0 part by mass.

[0652] The above-mentioned low-molecular-weight silane coupling agent (B-3) is a compound containing a hydrolyzable group bonded to a Si atom, and in a preferred embodiment, it further contains a hydrocarbon group bonded to the Si atom.

[0653] The above-mentioned low-molecular-weight silane coupling agent (B-3) is preferably the following formula:

[0654] SiR B4 nb2 R B5 (4－nb2) (B3)

[0655] [In formula (B3):

[0656] R B4 represents a hydrolyzable group,

[0657] R B5 represents a hydrocarbon group,

[0658] nb2 represents an integer of 1 to 4.]

[0659] The hydrolyzable group in the above R B4 refers to a group capable of undergoing a hydrolysis reaction, that is, a group capable of detaching from the main skeleton of the compound through a hydrolysis reaction. Examples of the hydrolyzable group in R B4 include -OR j , -OCOR j , -O-N=CR j 2, -NR j 2, -NHR j , -NCO, halogen (in these formulas, R j represents a substituted or unsubstituted C 1－4 alkyl), etc., and preferably -OR j (i.e., an alkoxy group). Examples of R j include unsubstituted alkyls such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyls such as chloromethyl. Among these, as R B4The hydrolyzable group in is preferably an alkyl group, particularly preferably an unsubstituted alkyl group, and more preferably a methyl group or an ethyl group.

[0660] The above-mentioned R B5 The hydrocarbon group in is a group containing carbon and hydrogen, and refers to a group obtained by removing one hydrogen atom from a hydrocarbon. As R B5 The hydrocarbon group in is not particularly limited, and examples thereof include C 1－20 hydrocarbon groups, such as aliphatic hydrocarbon groups. The above-mentioned "aliphatic hydrocarbon group" can be any one of linear, branched or cyclic, and can also be any one of saturated or unsaturated. In addition, the hydrocarbon group in R B5 can also contain one or more ring structures. As the hydrocarbon group in R B5 is preferably a linear or branched C 1－5 alkyl group, or a linear or branched C 2－5 alkenyl group, and more preferably a linear or branched C 1－3 alkyl group, or a linear or branched C 2－3 alkenyl group.

[0661] In the total amount of the above-mentioned low molecular weight silane coupling agent (B-3), the content of the compound represented by the above formula (B3) is preferably 70% by mass or more and 100% by mass or less, more preferably 80% by mass or more and 100% by mass or less, and further preferably 90% by mass or more and 100% by mass or less.

[0662] Examples of the above-mentioned low molecular weight silane coupling agent (B-3) include vinyltrimethoxysilane, vinyltriethoxysilane, methyltrimethoxysilane, and methyltriethoxysilane.

[0663] In one embodiment, relative to 100 parts by mass of the above-mentioned fluorinated polyether group-containing silane compound (A), the content of the above-mentioned low molecular weight silane coupling agent (B-3) is preferably 1 part by mass or more and 50 parts by mass or less, more preferably 5 parts by mass or more and 30 parts by mass or less. In another embodiment, relative to 100 parts by mass of the above-mentioned fluorinated polyether group-containing silane compound (A), the content of the above-mentioned low molecular weight silane coupling agent (B-3) is preferably 0 parts by mass.

[0664] The molecular weight of the low molecular weight fluorinated compound or low molecular weight silane compound (B) is preferably 450 or less, more preferably 120 or more and 400 or less, and further preferably 140 or more and 300 or less.

[0665] With respect to 100 parts by mass of the above-mentioned fluorinated polyether group-containing silane compound (A), the content of the low molecular weight fluorinated compound or the low molecular weight silane compound (B) is preferably 1 part by mass or more and 100,000 or less, more preferably 2 parts by mass or more and 80,000 parts by mass or less, and further preferably 5 parts by mass or more and 60,000 parts by mass or less. In one embodiment, with respect to 1 part by mass of the above-mentioned fluorinated polyether group-containing silane compound (A), the content of the above-mentioned low molecular weight fluorinated compound or the low molecular weight silane compound (B) is preferably 2 parts by mass or more and 1,000 parts by mass or less, more preferably 4 parts by mass or more and 600 parts by mass or less. In another embodiment, with respect to 100 parts by mass of the above-mentioned fluorinated polyether group-containing silane compound (A), the content of the above-mentioned low molecular weight fluorinated compound or the low molecular weight silane compound (B) is preferably 1 part by mass or more and 50 parts by mass or less, more preferably 5 parts by mass or more and 30 parts by mass or less.

[0666] (Fluorine-based solvent (C))

[0667] The above-mentioned fluorine-based solvent (C) contains a compound represented by the following formula:

[0668] CR 1 R 2 =CR 3 R 4 (C1)

[0669] [In formula (C1),

[0670] R 1 represents C 1－6 perfluoroalkyl or fluorine atom,

[0671] R 2 represents C 1－6 perfluoroalkyl,

[0672] R 3 represents C 1－6 perfluoroalkyl,

[0673] R 4 represents C 1－6 perfluoroalkyl.].

[0674] The present invention should not be limited to a specific theory for explanation, but it can be considered that the above-mentioned fluorine-based solvent (C) does not contain hydrogen atoms and oxygen atoms, so it has low polarity and can reduce the amount of moisture absorbed by the surface treatment agent. As a result, it is considered that a surface treatment layer with good heat resistance can be formed even after long-term storage.

[0675] The C 1 in the above-mentioned R 1－6 perfluoroalkyl can be linear or branched, and is preferably linear or branched C 1－5Perfluoroalkyl group, more preferably a linear or branched C 1－3 perfluoroalkyl group. In one embodiment, R 1 is preferably a fluorine atom. In another embodiment, R 1 is preferably C 1－3 perfluoroalkyl group.

[0676] The C 2 in the above R 1－6 perfluoroalkyl group can be linear or branched, preferably a linear or branched C 1－5 perfluoroalkyl group, more preferably a linear or branched C 1－3 perfluoroalkyl group.

[0677] The C 3 in the above R 1－6 perfluoroalkyl group can be linear or branched, preferably a linear or branched C 1－5 perfluoroalkyl group, more preferably a linear or branched C 1－3 perfluoroalkyl group.

[0678] The C 4 in the above R 1－6 perfluoroalkyl group can be linear or branched, preferably a linear or branched C 1－5 perfluoroalkyl group, more preferably a linear or branched C 1－3 perfluoroalkyl group.

[0679] The total number of carbon atoms contained in the compound represented by the above formula (C1) is preferably 5 or more and 20 or less, more preferably 6 or more and 15 or less, and further preferably 7 or more and 12 or less.

[0680] In the total amount of the fluorine-based solvent (C), the content of the compound represented by the above formula (C1) is preferably 5% by mass or more and 100% by mass or less, more preferably 30% by mass or more and 80% by mass or less, and further preferably 50% by mass or more and 70% by mass or less.

[0681] In the total amount of the surface treatment agent, the content of the compound represented by the above formula (C1) is preferably 50 to 99.7% by mass, more preferably 60 to 99.7% by mass, further preferably 70 to 99.7% by mass, and particularly preferably 80 to 99.7% by mass.

[0682] As the above fluorine-based solvent, hexafluoropropylene trimer can be cited. The above hexafluoropropylene trimer can be a mixture of isomers represented by the following formula (T-1), formula (T-2), and formula (T-3).

[0683]

[0684] [(CF3)2CF]2C=CFCF3 (T-2)

[0685]

[0686] In 100% by mass of the hexafluoropropylene trimer in total, the content of the isomer represented by the above formula (T-1) is preferably 0% by mass or more and 70% by mass or less, more preferably 1% by mass or more and 60% by mass or less. In 100% by mass of the hexafluoropropylene trimer in total, the content of the isomer represented by the above formula (T-2) is preferably 5% by mass or more and 55% by mass or less, more preferably 10% by mass or more and 45% by mass or less. In 100% by mass of the hexafluoropropylene trimer in total, the content of the isomer represented by the above formula (T-3) is preferably 20% by mass or more and 80% by mass or less, more preferably 30% by mass or more and 70% by mass or less.

[0687] Regarding the boiling point of the above fluorinated solvent, under 1 atm (1,013 hPa), it is preferably 60 °C or higher, more preferably 70 °C or higher and 140 °C or lower, still more preferably 80 °C or higher and 120 °C or lower.

[0688] The above fluorinated solvent (C) may further contain other solvents. By containing other solvents, the operability of the composition becomes better. When using such a composition to form a layer, the formed layer can become a continuous thin film. In addition, such a composition helps to form a thin film with an arbitrary film thickness.

[0689] There is no particular limitation on the above other solvents. For example, perfluoroaliphatic hydrocarbons having 5 to 12 carbon atoms (such as perfluorohexane, perfluoromethylcyclohexane, and perfluoro-1,3-dimethylcyclohexane) can be mentioned; polyfluoroaromatic hydrocarbons (such as bis(trifluoromethyl)benzene); polyfluoroaliphatic hydrocarbons (such as C6F 13CH2CH3 (such as ASAHIKLIN (registered trademark) AC-6000 manufactured by Asahi Glass Co., Ltd.), 1,1,2,2,3,3,4-heptafluorocyclopentane (such as ZEORORA (registered trademark) H manufactured by ZEON Corporation, Japan); hydrofluoroether (HFE) (such as perfluoropropyl methyl ether (C3F7OCH3) (such as Novec (trademark) 7000 manufactured by Sumitomo 3M Limited), perfluorobutyl methyl ether (C4F9OCH3) (such as Novec (trademark) 7100 manufactured by Sumitomo 3M Limited), perfluorobutyl ethyl ether (C4F9OC2H5) (such as Novec (trademark) 7200 manufactured by Sumitomo 3M Limited), perfluorohexyl methyl ether (C2F5CF(OCH3)C3F7) (such as Novec (trademark) 7300 manufactured by Sumitomo 3M Limited), etc. alkyl perfluoroalkyl ethers (the perfluoroalkyl and alkyl can be linear or branched), or CF3CH2OCF2CHF2 (such as ASAHIKLIN (registered trademark) AE-3000 manufactured by Asahi Glass Co., Ltd.), etc.). These solvents can be used alone or as a mixture of two or more. Among them, hydrofluoroethers are preferred, and perfluorobutyl methyl ether (C4F9OCH3) and / or perfluorobutyl ethyl ether (C4F9OC2H5) are particularly preferred.

[0690] The boiling point (under atmospheric pressure) of the above solvent is preferably below 105 °C, more preferably below 90 °C, and further preferably below 80 °C. By making the above solvent have a boiling point within the above range, when applying the surface treatment agent of the present invention to a substrate, it can be easily vaporized without heating or the like, and the time and energy required for the surface treatment process can be reduced. The lower limit of this boiling point is not particularly limited, for example, it can be 30 °C or higher, preferably 50 °C or higher.

[0691] In the total 100% by mass of the above fluorinated solvent (C), the content of the above other solvent is preferably 0% by mass or more and 90% by mass or less, more preferably 0% by mass or more and 70% by mass or less, and further preferably 0% by mass or more and 50% by mass or less.

[0692] In the above surface treatment agent, the content of the above fluorinated solvent (C) is preferably 50 to 99.7% by mass, more preferably 60 to 99.7% by mass, further preferably 70 to 99.7% by mass, and particularly preferably 80 to 99.7% by mass.

[0693] In the surface treatment agent of the present invention, it may further contain a (non-reactive) fluorinated polyether compound that can be understood as a fluorinated oil, preferably a perfluoro(poly)ether compound (hereinafter collectively referred to as "fluorinated oil"), a (non-reactive) silicone compound that can be understood as a silicone oil (hereinafter referred to as "silicone oil"), alcohols, catalysts, surfactants, polymerization inhibitors, sensitizers, etc. It should be noted that other components are components different from the above-mentioned silane compound (A) containing a fluorinated polyether group, low-molecular-weight fluorinated compound or low-molecular-weight silane coupling agent (B), and fluorinated solvent (C).

[0694] As the fluorinated oil, there is no particular limitation, and for example, the compound (perfluoro(poly)ether compound) represented by the following general formula (4) can be cited.

[0695] Rf 5 -(OC4F8) a" -(OC3F6) b" -(OC2F4) c" -(OCF2) d" -Rf 6 …(4)

[0696] In the formula, Rf 5 represents a C 1－16 alkyl group that can be substituted by one or more fluorine atoms (preferably a perfluoroalkyl group of C 1－16 ), Rf 6 represents a C 1－16 alkyl group that can be substituted by one or more fluorine atoms (preferably a perfluoroalkyl group of C 1－16 ), a fluorine atom or a hydrogen atom, and Rf 5 and Rf 6 are more preferably each independently a C 1－3 perfluoroalkyl group.

[0697] a″, b″, c″ and d″ respectively represent the number of 4 kinds of repeating units of the perfluoro(poly)ether constituting the polymer main skeleton, and are independently integers of 0 or more and 300 or less. The sum of a″, b″, c″ and d″ is greater than 30, preferably 40 to 300, more preferably 50 to 300. The order of existence of each repeating unit with a subscript a″, b″, c″ or d″ enclosed in parentheses is arbitrary in the formula. Among these repeating units, -(OC4F8)- can be any of -(OCF2CF2CF2CF2)-, -(OCF(CF3)CF2CF2)-, -(OCF2CF(CF3)CF2)-, -(OCF2CF2CF(CF3))-, -(OC(CF3)2CF2)-, -(OCF2C(CF3)2)-, -(OCF(CF3)CF(CF3))-, -(OCF(C2F5)CF2)- and (OCF2CF(C2F5))-, and is preferably -(OCF2CF2CF2CF2)-. -(OC3F6)- can be any of -(OCF2CF2CF2)-, -(OCF(CF3)CF2)- and (OCF2CF(CF3))-, and is preferably -(OCF2CF2CF2)-. -(OC2F4)- can be any of -(OCF2CF2)- and (OCF(CF3))-, and is preferably -(OCF2CF2)-.

[0698] As an example of the perfluoro(poly)ether compound represented by the above general formula (4), a compound represented by any one of the following general formula (4a) and general formula (4b) (which may be a mixture of one or more than two kinds) can be cited.

[0699] Rf 5 -(OCF2CF2CF2) b" -Rf 6 …(4a)

[0700] Rf 5 -(OCF2CF2CF2CF2) a" -(OCF2CF2CF2) b" -(OCF2CF2) c" -(OCF2) d" -Rf 6 …(4b)

[0701] In these formulas, Rf 5 and Rf 6As described above; in formula (4a), b" is an integer of 1 or more and 100 or less; in formula (4b), 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 presence of each repeating unit with subscripts a", b", c", d" enclosed in parentheses is arbitrary in the formula.

[0702] In addition, from another perspective, the fluorinated oil may also be a general formula Rf 3 -F (wherein Rf 3 is a C 5－16 perfluoroalkyl group.) The compound shown. In addition, it may also be a chlorotrifluoroethylene oligomer.

[0703] The above-mentioned fluorinated oil preferably has a number-average molecular weight of 1000 or more, more preferably 1500 or more, and further preferably 2000 or more. And, the above-mentioned fluorinated oil preferably has a number-average molecular weight of 30000 or less, more preferably 20000 or less, and further preferably 10000 or less. The molecular weight of the fluorinated oil can be measured using GPC.

[0704] Relative to the above-mentioned surface treatment agent, the above-mentioned fluorinated oil may contain, for example, 0 to 50% by mass, preferably 0 to 30% by mass, and more preferably 0 to 5% by mass. In one embodiment, the surface treatment agent of the present invention substantially does not contain a fluorinated oil. Substantially not containing a fluorinated oil means completely not containing a fluorinated oil, or may contain a very small amount of a fluorinated oil.

[0705] In one mode, it is also possible to make the number-average molecular weight of the fluorinated oil smaller than the number-average molecular weight of the silane compound (A) having a fluorinated polyether group. By forming such an average molecular weight, it is possible to suppress a decrease in the transparency of the surface treatment layer obtained from the compound, and to form a cured product having high wear durability and high surface slidability.

[0706] The fluorinated oil helps to improve the surface slidability of the layer formed by the surface treatment agent of the present invention.

[0707] As the above-mentioned silicone oil, for example, a linear or cyclic silicone oil having a siloxane bond of 2,000 or less can be used. The linear silicone oil can be a so-called ordinary silicone oil (straight silicone) and a modified silicone oil. As the ordinary silicone oil, dimethyl silicone oil, methylphenyl silicone oil, and methylhydrogen silicone oil can be cited. As the modified silicone oil, silicone oils obtained by modifying ordinary silicone oils with alkyl groups, aralkyl groups, polyethers, higher fatty acid esters, fluoroalkyl groups, amino groups, epoxy groups, carboxyl groups, alcohols, etc. can be cited. As the cyclic silicone oil, cyclic dimethylsiloxane oil, etc. can be cited.

[0708] In the surface treatment agent of the present invention, based on a total of 100 parts by mass of the above-mentioned fluorinated polyether group-containing silane compound (A) (the total when there are two or more types, the same hereinafter), such silicone oil can be contained in an amount of, for example, 0 to 300 parts by mass, preferably 50 to 200 parts by mass.

[0709] The silicone oil helps to improve the surface slipperiness of the surface treatment layer.

[0710] Examples of the above-mentioned alcohols include alcohols having 1 or more fluorine atoms substituted on a carbon atom having 1 to 6 carbon atoms, such as methanol, ethanol, isopropyl alcohol, tert-butanol, CF3CH2OH, CF3CF2CH2OH, (CF3)2CHOH. By adding these alcohols to the surface treatment agent, the stability of the surface treatment agent can be improved, and the compatibility between the fluorinated polyether group-containing silane compound (A) and the solvent can be improved.

[0711] In the surface treatment agent, based on the above-mentioned metal compound, the above-mentioned alcohols are preferably contained in an amount of 0.1 to 5 times, more preferably 0.5 to 3 times, and further preferably 0.8 to 1.2 times in terms of molar ratio. By making the content ratio of the alcohols within the above range, the stability of the surface treatment layer can be further improved.

[0712] Examples of the above-mentioned catalyst include acids (such as acetic acid, trifluoroacetic acid, etc.), bases (such as ammonia, triethylamine, diethylamine, etc.), transition metals (such as Ti, Ni, Sn, etc.), etc.

[0713] The catalyst can promote the hydrolysis and dehydration condensation of the fluorinated polyether group-containing silane compound (A), and can promote the formation of the layer formed by the surface treatment agent of the present invention.

[0714] As other components, in addition to the above components, for example, tetraethoxysilane, methyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-glycidylpropyltrimethoxysilane, methyltriacetoxysilane, etc. can also be cited.

[0715] The above surface treatment layer can be formed by applying the surface treatment agent to the substrate. The application of the surface treatment agent can be carried out in a manner that covers the substrate. The covering method is not particularly limited. For example, wet coating methods and dry coating methods can be used.

[0716] Examples of the wet coating method include dip coating, spin coating, brush coating, flow coating, spraying, roll coating, gravure coating, and similar methods, and spraying is preferred.

[0717] As an example of the dry coating method, vapor deposition (usually vacuum vapor deposition), sputtering, CVD, and similar methods can be cited. As a specific example of the vapor deposition method (usually the vacuum vapor deposition method), resistance heating, high-frequency heating using an electron beam, microwave, etc., ion beam, and similar methods can be cited. As a specific example of the CVD method, plasma CVD, optical CVD, thermal CVD, and similar methods can be cited.

[0718] In addition, the covering can also be carried out by using the atmospheric pressure plasma method.

[0719] When using the wet coating method, the surface treatment agent of the present invention can be diluted with a solvent and applied to the surface of the substrate. From the viewpoints of the stability of the composition of the present invention and the volatility of the solvent, the following solvents are preferably used: perfluoroaliphatic hydrocarbons having 5 to 12 carbon atoms (e.g., perfluorohexane, perfluoromethylcyclohexane, and perfluoro-1,3-dimethylcyclohexane); polyfluoroaromatic hydrocarbons (e.g., bis(trifluoromethyl)benzene); polyfluoroaliphatic hydrocarbons (e.g., C6F 13 CH2CH3 (e.g., ASAHIKLIN (registered trademark) AC-6000 manufactured by Asahi Glass Co., Ltd.), 1,1,2,2,3,3,4-heptafluorocyclopentane (e.g., Zeorora (registered trademark) H manufactured by Nippon Zeon Co., Ltd.); hydrofluoroethers (HFEs) (e.g., perfluoropropyl methyl ether (C3F7OCH3) (e.g., Novec (trademark) 7000 manufactured by Sumitomo 3M Limited), perfluorobutyl methyl ether (C4F9OCH3) (e.g., Novec (trademark) 7100 manufactured by Sumitomo 3M Limited), perfluorobutyl ethyl ether (C4F9OC2H5) (e.g., Novec (trademark) 7200 manufactured by Sumitomo 3M Limited), perfluorohexyl methyl ether (C2F5CF(OCH3)C3F7) (e.g., Novec (trademark) 7300 manufactured by Sumitomo 3M Limited), etc. of alkyl perfluoroalkyl ethers (the perfluoroalkyl group and the alkyl group may be linear or branched), or CF3CH2OCF2CHF2 (e.g., ASAHIKLIN (registered trademark) AE-3000 manufactured by Asahi Glass Co., Ltd.), etc. These solvents can be used alone or in the form of a mixture of two or more. Among them, hydrofluoroethers are preferred, and perfluorobutyl methyl ether (C4F9OCH3) and / or perfluorobutyl ethyl ether (C4F9OC2H5) are particularly preferred.

[0720] When using the dry coating method, the surface treatment agent of the present invention can be directly used for the dry coating method, or can be used for the dry coating method after being diluted with the above-mentioned solvent.

[0721] The formation of the layer of the surface treatment agent is preferably carried out in such a manner that the surface treatment agent of the present invention coexists with a catalyst for hydrolysis and dehydration condensation in the layer. For simplicity, when using the wet coating method, the catalyst can be added to the diluted solution of the surface treatment agent of the present invention immediately before it is applied to the substrate surface after diluting the surface treatment agent of the present invention with a solvent.

[0722] Any suitable acid or base can be used as the catalyst. As the acid catalyst, for example, acetic acid, formic acid, trifluoroacetic acid, etc. can be used. In addition, as the base catalyst, for example, ammonia, organic amines, etc. can be used.

[0723] After applying the surface treatment agent, drying can be carried out as needed. Through this drying, the hydrolysis and dehydration condensation of the fluorinated polyether group-containing silane compound (A) described later are promoted, and solvents, etc. are removed.

[0724] The drying of the above precursor layer is preferably carried out at a temperature of 0 °C or higher and 300 °C or lower, more preferably at 70 °C or higher and 230 °C or lower, and further preferably at 120 °C or higher and 180 °C or lower, and preferably carried out for a time of 0.1 hour or longer and 2 hours or shorter, more preferably 0.15 hour or longer and 1 hour or shorter, and further preferably 0.3 hour or longer and 0.8 hour or shorter.

[0725] The substrates that can be used in the present invention can be composed of, for example, glass, resin (natural or synthetic resin, for example, can be conventional plastic materials), OCA (Optical Clear Adhesive), polarizer metal, ceramics, semiconductors (such as silicon, germanium, etc.), electronic devices, fibers (fabrics, non-woven fabrics, etc.), furs, leathers, woods, ceramics, stones, etc., building components, sanitary products, any suitable materials.

[0726] In a preferred embodiment, the above substrate is glass, resin, polarizer, OCA (Optical Clear Adhesive) or metal, preferably glass, resin, polarizer or OCA (Optical Clear Adhesive).

[0727] As the above glass, sapphire glass, soda-lime glass, alkali-silicate-aluminate glass, borosilicate glass, alkali-free glass, crystal glass, quartz glass are preferred, and chemically strengthened soda-lime glass, chemically strengthened alkali-silicate-aluminate glass and chemically bonded borosilicate glass are particularly preferred.

[0728] For example, when the laminate to be manufactured is a kitchen utensil, the material constituting the surface of the base material can be, for example, glass. As an example of the glass base material for kitchen utensils, a base material containing alkaline earth metals such as Mg and Ca can be cited. The total content rate of the alkaline earth metals in the glass base material is preferably 0.7 atomic% or more, more preferably 0.7 atomic% or more and 5 atomic% or less, still more preferably 1 atomic% or more and 5 atomic% or less, and still more preferably 1.5 atomic% or more and 4 atomic% or less.

[0729] In the glass base material used for the above kitchen utensils, the content rate of O atoms is preferably 60 atomic% or more and 80 atomic% or less, more preferably 65 atomic% or more and 75 atomic% or less. The content rate of Si atoms is preferably 20 atomic% or more and 30 atomic% or less, more preferably 20 atomic% or more and 25 atomic% or less. The content rate of Na atoms is preferably 0.5 atomic% or more and 5 atomic% or less, more preferably 1 atomic% or more and 4.5 atomic% or less. The content rate of Ca atoms is preferably 1 atomic% or more and 3 atomic% or less, more preferably 1.2 atomic% or more and 2.2 atomic% or less. The content rate of Mg atoms is preferably 0.2 atomic% or more and 2 atomic% or less, more preferably 0.4 atomic% or more and 1.6 atomic% or less. The content rate of Sn atoms is preferably 0 atom% or more and 3 atomic% or less, more preferably 0.1 atomic% or more and 2.8 atomic% or less.

[0730] The linear thermal expansion coefficient of the glass base material used for the above kitchen utensils is preferably 150×10 －7 / K or less, more preferably 100×10 －7 / K or less, still more preferably 60×10 －7 / K or less, and preferably 90×10 －7 / K or more.

[0731] The thickness of the glass base material used for the above kitchen utensils is preferably 1 mm or more and 10 mm or less, more preferably 1.5 mm or more and 5 mm or less.

[0732] For example, when the laminate to be manufactured is an optical component, the material constituting the surface of the substrate can be a material for optical components, such as glass or transparent plastic. In addition, when the laminate to be manufactured is an optical component, a certain layer (or film), such as a hard coat layer or an antireflection layer, can also be formed on the surface (outermost layer) of the substrate. In the antireflection layer, either a single-layer antireflection layer or a multilayer antireflection layer can be used. As examples of inorganic substances that can be used for the antireflection layer, SiO2, SiO, ZrO2, TiO2, TiO, Ti2O3, Ti2O5, Al2O3, Ta2O5, Ta3O5, Nb2O5, HfO2, Si3N4, CeO2, MgO, Y2O3, SnO2, MgF2, WO3, etc. can be cited. These inorganic substances can be used alone or in combination of two or more of these (for example, as a mixture). When forming a multilayer antireflection layer, SiO2 and / or SiO is preferably used for its outermost layer. When the laminate to be manufactured is an optical glass member for a touch panel, a transparent electrode, a thin film using, for example, indium tin oxide (ITO) or indium zinc oxide, etc., can also be provided on a part of the surface of the substrate (glass). In addition, regarding the substrate, depending on its specific specifications, etc., it can also have an insulating layer, an adhesive layer, a protective layer, a decorative frame layer (I-CON), a mist film layer, a hard coat film layer, a polarizing film, a retardation film, and a liquid crystal display module, etc.

[0733] The shape of the above-mentioned substrate is not particularly limited, and for example, it can be plate-shaped, film-shaped, or other forms. In addition, the surface area of the substrate on which the surface treatment layer is to be formed only needs to be at least a part of the substrate surface, and can be appropriately determined according to the use and specific style of the laminate to be manufactured.

[0734] According to the present invention, a laminate with good heat resistance can be provided. In one embodiment, in this laminate, it is preferably possible to provide a laminate with good heat resistance even after long-term storage of the surface treatment agent. Therefore, the laminate of the present invention can be suitably used as a functional film.

[0735] The laminate of the present invention can be applied to various substrates, such as substrates in kitchen utensils, and kitchen utensils containing this laminate are also included in the technical scope of the present invention. As such kitchen utensils, gas stoves, electric stoves, hot plates, range hoods, refrigerators, and other heating and cooking utensils can be cited.

[0736] The laminate of the present invention can also be used as an optical material. As the optical material, in addition to the optical materials related to displays and the like exemplified later, various optical materials are preferably listed: for example, cathode ray tubes (CRT; for example, personal computer displays), liquid crystal displays, plasma displays, organic EL displays, inorganic thin film EL dot matrix displays, rear projection displays, fluorescent display tubes (VFD), field emission displays (FED; Field Emission Display), etc., or protective plates for these displays, or materials with an antireflection film treatment applied to the surfaces thereof.

[0737] The laminate of the present invention is not particularly limited and can be an optical component. Examples of the optical component can include the following items: lenses for glasses, etc.; front protective plates, antireflection plates, polarizing plates, antiglare plates for displays such as PDP and LCD; touch screen sheets for devices such as mobile phones and portable information terminals; the surfaces of optical discs such as Blu-ray (registered trademark) discs, DVD discs, CD-R, and MO; optical fibers; display surfaces of watches, etc.

[0738] In addition, the laminate of the present invention can also be a medical device or a medical material. In addition, a laminate having a layer obtained by the present invention can also be an interior and exterior automotive decoration material. Examples of exterior parts can be listed as follows: windows, lamp housings, and exterior camera housings. Examples of interior parts can be listed as follows: instrument panel covers, navigation system touch panels, and decorative interior parts.

[0739] Furthermore, the laminate of the present invention can also be an electronic device. As the electronic device, portable terminal devices such as smartphones, tablet computers, notebook PCs, and cameras can be listed; wearable devices such as smart watches; display devices such as televisions, liquid crystal displays, organic EL displays, and inorganic EL displays.

[0740] The laminate of the present invention has been described in detail above. In addition, the laminate of the present invention and the manufacturing method of the laminate, etc. are not limited to the contents exemplified above.

[0741] Examples

[0742] The present invention will be described more specifically by the following examples, but the present invention is not limited to these.

[0743] Surface treatment agents (1) to (14) were prepared at the weight ratios shown in Table 1.

[0744] Fluorinated polyether group-containing silane compounds (1), (2), low molecular weight fluorinated compounds, or low molecular weight silane compounds (1) to (4) are as follows.

[0745] Fluorinated polyether group-containing silane compound (1)

[0746]

[0747] Fluorinated polyether group-containing silane compound (2)

[0748]

[0749] Low-molecular-weight fluorinated compound or low-molecular-weight silane compound (1): Ethyl nonafluorobutyl ether

[0750] Low-molecular-weight fluorinated compound or low-molecular-weight silane compound (2): Methyl perfluoroisobutyl ether

[0751] Low-molecular-weight fluorinated compound or low-molecular-weight silane compound (3): Hexafluorobenzene

[0752] Low-molecular-weight fluorinated compound or low-molecular-weight silane compound (4): Trimethoxyvinylsilane

[0753] Fluorine-based solvent (1): Hexafluoropropylene trimer ((T-1):(T-2):(T-3)=15.0:40.1:44.9 (mass ratio))

[0754]

[0755] [(CF3)2CF]2C=CFCF3 (T-2)

[0756]

[0757] Fluorine-based solvent (2): Ethyl perfluorobutyl ether

[0758] [Table 1]

[0759]

[0760] The substrate was treated with a surface treatment agent according to the following steps.

[0761] The kitchen glass was pre-cleaned with an alkaline cleaning agent to remove the oil on the surface. Then, the surface of the glass substrate was activated by atmospheric pressure rotating plasma. (The conditions of the atmospheric pressure plasma were 0.8 kW and a height of 10 mm) The surface treatment agent was coated on the glass substrate using a spray device, and then, it was heated and dried at 150 °C for 30 minutes. (The spray conditions were 40 g / m 2 , and a height of 30 mm) Then, it was left standing for 2 hours to produce a glass substrate treated with the surface treatment agent.

[0762] Evaluation method of water contact angle

[0763] 2 μL of water was dropped on the treated substrate, and the water contact angle of the water droplet was measured.

[0764] (1) Antifouling property evaluation

[0765] 2 parts by mass of mixed edible oil, 2 parts by mass of household soy sauce, 2 parts by mass of cooking red wine, 1 part by mass of vinegar, 1 part by mass of oyster sauce, 1 part by mass of miso, 1 part by mass of salt, 1 part by mass of monosodium glutamate, 1 part by mass of chicken essence, 1 part by mass of granulated sugar, and 10 parts by mass of water were used to prepare a test solution. The test solution was spread into a circle with a radius R = 0.5 cm on the surface of the treated substrate. After standing for 2 hours, the surface was washed with dishwashing detergent and water, and then the water contact angle of the coating in the test area was measured.

[0766] When the water contact angle is less than 90 degrees, it is judged as "×"; when it is 90 degrees or more and less than 100 degrees, it is judged as "△"; when it is 100 degrees or more and less than 110 degrees, it is judged as "○"; when it is 110 degrees or more, it is judged as "◎".

[0767] (2) High-temperature resistance performance

[0768] The treated substrate was placed in a heating oven and treated at 250 °C ± 3 °C for 3 hours. Then it was taken out, allowed to cool to room temperature for 60 minutes, rinsed with clean water, and wiped clean. The water contact angle of the treated substrate was measured.

[0769] When the water contact angle is less than 90 degrees, it is judged as "×"; when it is 90 degrees or more and less than 100 degrees, it is judged as "△"; when it is 100 degrees or more and less than 105 degrees, it is judged as "○"; when it is 105 degrees or more, it is judged as "◎".

[0770] (3) Antifouling property evaluation of the treated substrate after the composition is stored for 1 month

[0771] After preparing the surface treatment agent, it was stored at 25 °C for 30 days. After storage, the substrate was spray-treated according to the steps to produce a treated substrate. Then, the evaluation was carried out in the same manner as in (1) the antifouling property evaluation.

[0772] (4) High-temperature resistance performance of the treated substrate after the composition is stored for 1 month

[0773] After preparing the surface treatment agent, it was stored at 25 °C for 30 days. After storage, the substrate was spray-treated according to the steps to produce a treated substrate. Then, the evaluation was carried out in the same manner as in (2) the high-temperature resistance performance.

[0774] (5) Abrasion resistance of the treated substrate after the composition is stored for 1 month

[0775] After preparing the surface treatment agent, it was stored at 25 °C for 30 days. After storage, the substrate was spray-treated according to the steps to produce a treated substrate. Then, the abrasion resistance of the treated substrate was evaluated.

[0776] Use 0000# steel wool (1×1 cm) to rub the treated substrate with a load of 1 kg, a friction stroke of 6 cm, and a speed of 60 revolutions per minute. The number of times when the water contact angle reaches less than 90 degrees is used as the evaluation result of abrasion resistance.

[0777] When the abrasion resistance is less than 3000 times, it is judged as "×". When the abrasion resistance is 3000 times or more and less than 5000 times, it is judged as "△". When the abrasion resistance is 5000 times or more and less than 10000 times, it is judged as "○". When the abrasion resistance is 10000 times or more, it is judged as "◎".

[0778] (6) Alkali resistance of the treated substrate after the composition is stored for 1 month

[0779] After preparing the surface treatment agent, it was stored at 25 °C for 30 days. After storage, the substrate was spray-treated according to the steps to produce a treated substrate. Then, the alkali resistance of the treated substrate was evaluated. After immersing the treated substrate in a 5% sodium carbonate aqueous solution for 24 hours, it was taken out, rinsed with clean water, wiped clean on the surface, and the water contact angle of the treated substrate was measured.

[0780] When the water contact angle is less than 90 degrees, it is judged as "×". When it is 90 degrees or more and less than 100 degrees, it is judged as "△". When it is 100 degrees or more and less than 110 degrees, it is judged as "○". When it is 110 degrees or more, it is judged as "◎".

[0781] (7) Acid resistance of the treated substrate after the composition is stored for 1 month

[0782] After preparing the surface treatment agent, it was stored at 25 °C for 30 days. After storage, the substrate was spray-treated according to the steps to produce a treated substrate. Then, the acid resistance of the treated substrate was evaluated. After immersing the treated substrate in a 5% sodium acetate aqueous solution for 24 hours, it was taken out, rinsed with clean water, wiped clean on the surface, and the water contact angle of the treated substrate was measured.

[0783] When the water contact angle is less than 90 degrees, it is judged as "×". When it is 90 degrees or more and less than 100 degrees, it is judged as "△". When it is 100 degrees or more and less than 110 degrees, it is judged as "○". When it is 110 degrees or more, it is judged as "◎".

[0784] [Table 2]

[0785]

[0786] Regarding the surface treatment agent compositions described in Examples 1 to 12, not only are the stain resistance and high temperature resistance of the substrates treated with them excellent, but also the stain resistance, high temperature resistance, abrasion resistance, alkali resistance, and acid resistance of the substrates treated with the surface treatment agent after long-term storage are excellent.

Claims

1. A surface treatment agent, characterized in that, Comprising: A fluorinated polyether group-containing silane compound (A); A low molecular weight fluorinated compound or a low molecular weight silane compound (B); and A fluorinated solvent (C), The low molecular weight fluorinated compound or low molecular weight silane compound (B) comprises one or more selected from low molecular weight fluorinated compounds having an ether bond or an aromatic group and low molecular weight silane coupling agents, The fluorinated solvent (C) comprises a compound represented by the following formula: CR 1 R 2 = CR 3 R 4 (C1) In formula (C1), R 1 represents C 1－6 a perfluoroalkyl group or a fluorine atom, R 2 represents C 1－6 perfluoroalkyl group, R 3 represents C 1－6 perfluoroalkyl group, R 4 represents C 1－6 perfluoroalkyl group.

2. The surface treatment agent according to claim 1, characterized in that: The fluorinated polyether group-containing silane compound (A) comprises at least a compound represented by the following formula (1) or formula (2): R F1 α -X A -R Si β (1) R Si γ -X A -R F2 -X A -R Si γ (2) In formula (1) and formula (2): R F1 Each occurrence is independently Rf at each occurrence 1 -R F -O q - or fluoroalkyl; R F2 is -Rf 2 p -R F -O q - or fluoroalkylene; Rf 1 independently and separately at each occurrence, is a C 1－16 alkyl group which may be substituted by one or more fluorine atoms; Rf 2 is a C 1－6 alkylene group which may be substituted by one or more fluorine atoms; R F a divalent fluorinated polyether group that is divalent and independent at each occurrence; p is 0 or 1; q is independently 0 or 1 each time it appears; R Si Each occurrence is independently a monovalent group containing a Si atom bonded to a hydroxyl group, a hydrolyzable group, a hydrogen atom or a monovalent organic group; At least one R Si is a monovalent group containing a Si atom bonded to a hydroxyl group or a hydrolyzable group; X A each independently represents a single bond or an organic group having a valence of 2 to 10; α is an integer from 1 to 9; β is an integer from 1 to 9; γ is independently an integer from 1 to 9.

3. The surface treatment agent according to claim 1, characterized in that: Based on the total amount of the surface treatment agent, the content of the fluorinated polyether group-containing silane compound (A) is 0.01% by mass or more and 5% by mass or less.

4. The surface treatment agent according to claim 1, characterized in that: The low molecular weight fluorinated compound or low molecular weight silane compound (B) comprises one or more selected from a low molecular weight fluorinated compound (B-1) having an ether bond, a low molecular weight fluorinated compound (B-2) having an aromatic group, and a low molecular weight silane coupling agent (B-3).

5. The surface treatment agent according to claim 4, characterized in that: Based on 1 part by mass of the fluorinated polyether group-containing silane compound (A), the content of the low molecular weight fluorinated compound (B-1) is 2 parts by mass or more and 1,000 parts by mass or less.

6. The surface treatment agent according to claim 4, characterized in that: Based on 100 parts by mass of the fluorinated polyether group-containing silane compound (A), the content of the low molecular weight fluorinated compound (B-2) is 1 part by mass or more and 50 parts by mass or less.

7. The surface treatment agent according to claim 4, characterized in that: Based on 100 parts by mass of the fluorinated polyether group-containing silane compound (A), the content of the low molecular weight silane coupling agent (B-3) is 1 part by mass or more and 50 parts by mass or less.

8. The surface treatment agent according to claim 1, characterized in that: The boiling point of the fluorinated solvent (C) is 100 °C or higher.

9. A laminate, characterized in that: It has a glass substrate and a surface treatment layer, The surface treatment layer is formed from the surface treatment agent according to any one of claims 1 to 8.

10. The laminate according to claim 9, characterized in that: The thickness of the surface treatment layer is 5 nm or more and 50 nm or less.

11. The laminate according to claim 9, characterized in that: The content rate of the alkaline earth metal contained in the glass substrate is 0.7 atomic % or more.

12. A kitchen utensil, characterized in that: It comprises the laminate according to claim 9.

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