KR20240035557A - surface treatment agent - Google Patents

Abstract

The present invention is a surface treatment agent containing a fluoropolyether group-containing silane compound and a lower fluoroalkyl alcohol, and the content of the lower fluoroalkyl alcohol is, with respect to 100 parts by mass of the fluoropolyether group-containing silane compound, A surface treatment agent containing 30 parts by mass or less is provided.

Description

surface treatment agent

This disclosure relates to surface treatment agents.

It is known that certain types of fluoropolyether group-containing silane compounds can provide excellent water repellency, oil repellency, stain resistance, etc. when used for surface treatment of substrates. The layer obtained from a surface treatment agent containing a fluoropolyether group-containing silane compound (hereinafter also referred to as “surface treatment layer”) is a so-called functional thin film, which is used for various applications such as glass, plastic, fiber, sanitary products, and building materials. It has been implemented on various substrates (Patent Document 1).

Japanese Patent Publication No. 2015-224293 Japanese Patent Publication No. 2016-132719

The fluoropolyether group-containing silane compounds described in Patent Documents 1 and 2 can provide a surface treatment layer with excellent function, but a surface treatment layer with higher wear durability is required.

The purpose of the present disclosure is to provide a surface treatment agent capable of forming a surface treatment layer with higher wear durability.

This disclosure includes the following aspects.

[1] A surface treatment agent containing a fluoropolyether group-containing silane compound and a lower fluoroalkyl alcohol, wherein the content of the lower fluoroalkyl alcohol is 30 parts by mass based on 100 parts by mass of the fluoropolyether group-containing silane compound. A surface treatment agent containing not more than one part by mass.

[2] The above fluoropolyether group-containing silane compound has the following formula (1) or (2):

[Formula:

R ^F1 is, at each occurrence, independently Rf ¹ -R ^F -O _q -;

R ^F2 is -Rf ² _p -R ^F -O _q -;

Rf ¹ is, at each occurrence, independently a C _1-16 alkyl group which may be substituted with one or more fluorine atoms;

Rf ² is a C _1-6 alkylene group which may be substituted with one or more fluorine atoms;

R ^F each independently represents a divalent fluoropolyether group;

p is 0 or 1;

q is independently 0 or 1 for each occurrence;

R ^Si is, at each occurrence, independently a monovalent group containing a Si atom to which a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent organic group is bonded;

At least one R ^Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded;

X ^A each independently represents a single bond or a 2- to 10-valent organic group;

α is an integer from 1 to 9;

β is an integer from 1 to 9;

γ is each independently an integer from 1 to 9]

The surface treatment agent according to [1], which is a silane compound containing at least one fluoropolyether group represented by .

[3] Rf ¹ is independently a C _1-16 perfluoroalkyl group in each occurrence,

The surface treatment agent according to [ ² ] above, wherein each occurrence of Rf 2 is independently a C _1-6 perfluoroalkylene group.

[4] R ^F is independently for each occurrence, in the equation:

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ R ^Fa ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -

[In the formula, R ^Fa is independently a hydrogen atom, a fluorine atom, or a chlorine atom in each occurrence,

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, and a, b, c, d, The order of existence of each repeating unit enclosed in parentheses by adding e or f is arbitrary in the formula, provided that when all R ^Fa is a hydrogen atom or a chlorine atom, at least one of a, b, c, e and f is, [is more than 1]

The surface treatment agent according to [2] or [3] above, which is the group represented by .

[5] The surface treatment agent according to [4] above, wherein R ^Fa is a fluorine atom.

[6] R ^F , in each occurrence, is independently of the following formula (f1), (f2), (f3), (f4), (f5) or (f6):

-(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1)

[Wherein, d is an integer from 1 to 200, and e is 0 or 1],

-(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f2)

[Wherein, c and d are each independently an integer of 0 to 30;

e and f are each independently an integer from 1 to 200;

The sum of c, d, e and f is an integer from 10 to 200;

The order of existence of each repeating unit enclosed in parentheses with the subscript c, d, e or f is arbitrary in the formula],

-(R ⁶ -R ⁷ ) _g - (f3)

[Wherein, R ⁶ is OCF ₂ or OC ₂ F ₄ ;

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or a combination of 2 or 3 groups selected from these groups;

g is an integer from 2 to 100],

-(R ⁶ -R ⁷ ) _g -R ^r -(R ^7' -R ^6' ) _g' - (f4)

[Wherein, R ⁶ is OCF ₂ or OC ₂ F ₄ ;

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or a combination of 2 or 3 groups independently selected from these groups and

R ^6' is OCF ₂ or OC ₂ F ₄ ,

R ^7' is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or two or three groups independently selected from these groups. It is a combination,

g is an integer from 2 to 100,

g' is an integer from 2 to 100,

R ^r is,

(In the formula, * indicates the binding position)

lim] ;

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f5)

[In the formula, e is an integer from 1 to 200, and a, b, c, d, and f are each independently integers from 0 to 200, and a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the equation]

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f6)

[In the formula, f is an integer from 1 to 200, and a, b, c, d, and e are each independently integers from 0 to 200, and a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the equation]

The surface treatment agent according to [2] or [3] above, which is the group represented by .

[7] R ^Si has the following formula (S1), (S2), (S3), (S4) or (S5):

[Formula:

R ¹¹ is independently a hydroxyl group or a hydrolyzable group in each occurrence;

Each occurrence of R ¹² independently represents a hydrogen atom or a monovalent organic group;

n1 is an integer of 0 to 3, each independently for each (SiR ¹¹ _n1 R ¹² _{3 -n1} ) unit;

Each occurrence of X ¹¹ independently represents a single bond or a divalent organic group;

Each occurrence of R ¹³ independently represents a hydrogen atom or a monovalent organic group;

t is an integer of 2 or more independently for each occurrence;

R ¹⁴ , at each occurrence, is independently a hydrogen atom, a halogen atom, or -X ¹¹ -SiR ¹¹ _n1 R ¹² _3-n1 ;

R ¹⁵ in each occurrence is independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms;

R ^a1 , in each occurrence, is independently -Z ¹ -SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ;

Z ¹ is independently an oxygen atom or a divalent organic group in each occurrence;

R ²¹ is independently -Z ^1' -SiR ^21' _p1' R ^22' _q1' R ^23' _{r1 '} in each occurrence;

R ²² in each occurrence is independently a hydroxyl group or a hydrolyzable group;

Each occurrence of R ²³ independently represents a hydrogen atom or a monovalent organic group;

p1 is, independently, an integer from 0 to 3 in each occurrence;

q1 is independently an integer from 0 to 3 in each occurrence;

r1 is, independently, an integer from 0 to 3 in each occurrence;

The sum of p1, q1, and r1 is 3 for the SiR ²¹ _p1 R ²² _q1 R ²³ _r1 unit;

Z ^1' , in each occurrence, is independently an oxygen atom or a divalent organic group;

R ^21' , in each occurrence, is independently -Z ^1" -SiR ^22" _q1" R ^23" _{r1 "} ;

R ^22' , in each occurrence, is independently a hydroxyl group or a hydrolyzable group;

R ^23' in each occurrence is independently a hydrogen atom or a monovalent organic group;

p1' is, at each occurrence, independently an integer from 0 to 3;

q1' is independently an integer from 0 to 3 in each occurrence;

r1' is independently an integer from 0 to 3 in each occurrence;

The sum of p1', q1', and r1' is 3 for the SiR ^21' _p1' R ^22' _q1' R ^23' _{r1 '} unit;

Z ^1" , in each occurrence, is independently an oxygen atom or a divalent organic group;

R ^{22 "} in each occurrence is independently a hydroxyl group or a hydrolyzable group;

R ^{23 "} in each occurrence is independently a hydrogen atom or a monovalent organic group;

q1" is, in each occurrence, independently an integer from 0 to 3;

r1" is, in each occurrence, independently an integer from 0 to 3;

The sum of q1" and r1" is 3 in the SiR ^22" _q1" R ^23" _{r1 "} unit;

Each occurrence of R ^b1 is independently a hydroxyl group or a hydrolyzable group;

R ^c1 is independently a hydrogen atom or a monovalent organic group in each occurrence;

k1 is, independently, an integer from 0 to 3 in each occurrence;

l1 is an integer from 0 to 3, independently for each occurrence;

m1 is, independently, an integer from 0 to 3 in each occurrence;

The sum of k1, l1 and m1 is 3 in SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 units;

R ^d1 is, independently at each occurrence, -Z ² -CR ³¹ _p2 R ³² _q2 R ³³ _r2 ;

Each occurrence of Z ² is independently a single bond, an oxygen atom, or a divalent organic group;

R ³¹ is independently -Z ^2' -CR ^32' _q2' R ^33' _{r2 '} in each occurrence;

R ³² is independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _{3 -n2} in each occurrence;

R ³³ each independently represents a hydrogen atom, a hydroxyl group, or a monovalent organic group;

p2 is, independently, an integer from 0 to 3 in each occurrence;

q2 is, at each occurrence, independently an integer from 0 to 3;

r2 is, each occurrence independently, an integer from 0 to 3;

The sum of p2, q2, and r2 is 3 for the SiR ³¹ _p2 R ³² _q2 R ³³ _r2 unit;

Z ^2' in each occurrence is independently a single bond, an oxygen atom, or a divalent organic group;

R ^32' , in each occurrence, is independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _{3 -n2} ;

R ^33' in each occurrence is independently a hydrogen atom, a hydroxyl group, or a monovalent organic group;

q2' is independently an integer from 0 to 3 in each occurrence;

r2' is independently an integer from 0 to 3 in each occurrence;

The sum of q2' and r2' is 3 for the SiR ^32' _q2' R ^33' _{r2 '} unit;

Z ³ in each occurrence is independently a single bond, an oxygen atom, or a divalent organic group;

Each occurrence of R ³⁴ independently represents a hydroxyl group or a hydrolyzable group;

R ³⁵ each independently represents a hydrogen atom or a monovalent organic group;

n2 is independently an integer from 0 to 3 in each occurrence;

R ^e1 is independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _{3 -n2} in each occurrence;

R ^f1 , in each occurrence, is independently a hydrogen atom, a hydroxyl group, or a monovalent organic group;

k2 is independently an integer from 0 to 3 in each occurrence;

l2 is independently an integer from 0 to 3 in each occurrence;

m2 is, independently, an integer from 0 to 3 in each occurrence;

The sum of k2, l2 and m2 is 3 in CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 units;

R ^g1 and R ^h1 are each independently in each occurrence, -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 ;

Each occurrence of Z ⁴ independently represents a single bond, an oxygen atom, or a divalent organic group;

However, in formulas (S1), (S2), (S3), (S4) and (S5), there is at least one Si atom to which a hydroxyl group or hydrolyzable group is bonded]

The surface treatment agent according to any one of [2] to [6] above, which is a group represented by .

[8] α, β and γ are 1, the surface treatment agent according to any one of [2] to [7] above.

[9] The surface treatment agent according to [7] or [8] above, wherein R ^Si is a formula (S3), (S4) or (S5).

[10] The surface treatment agent according to any one of [7] to [9] above, wherein R ^Si is a formula (S3).

[11] The above, including a silane compound containing a fluoropolyether group where R ^Si is the formula (S1), and a silane compound containing a fluoropolyether group where R ^Si is the formula (S3), (S4) or (S5) The surface treatment agent described in [7].

[12] The surface treatment agent according to [7] above, comprising a silane compound containing a fluoropolyether group where R ^Si is the formula (S1), and a silane compound containing a fluoropolyether group where R ^Si is the formula (S3).

[13] The surface treatment agent according to [7] above, comprising a silane compound containing a fluoropolyether group where R ^Si is the formula (S1), and a silane compound containing a fluoropolyether group where R ^Si is the formula (S4).

[14] The surface treatment agent according to any one of [1] to [13] above, wherein the content of the lower fluoroalkyl alcohol is 0.1 to 20 parts by mass based on 100 parts by mass of the silane compound containing a fluoropolyether group. .

[15] The surface treatment agent according to any one of [1] to [14] above, wherein the content of the lower fluoroalkyl alcohol is 3.0 to 20 parts by mass based on 100 parts by mass of the fluoropolyether group-containing silane compound. .

[16] The surface treatment agent according to any one of [1] to [15] above, wherein the lower fluoroalkyl alcohol is a fluoroalkyl alcohol with a pKa of 15.0 or less.

[17] The surface treatment agent according to any one of [1] to [16] above, wherein the lower fluoroalkyl alcohol is a fluoroalkyl alcohol with a pKa of 5.0 to 15.0.

[18] The lower fluoroalkyl alcohol has the following formula:

CRf ⁴ _n4 H _{3 -n4} -OH

[Formula:

Rf ⁴ is a perfluoroalkyl group having 1 to 3 carbon atoms,

n4 is an integer from 1 to 3]

The surface treatment agent according to any one of [1] to [17] above, which is a fluoroalkyl alcohol represented by .

[19] The surface treatment agent according to any one of [1] to [18], wherein the lower fluoroalkyl alcohol is a fluoroalkyl alcohol having 1 to 6 carbon atoms.

[20] The surface treatment agent according to any one of [1] to [19], wherein the lower fluoroalkyl alcohol is hexafluoropropanol or hexafluoroisopropanol.

[21] The surface treatment agent according to any one of [1] to [20] above, further comprising one or more other components selected from fluorine-containing oil, silicone oil, and catalyst.

[22] The surface treatment agent according to any one of [1] to [21] above, further comprising a solvent.

[23] The surface treatment agent according to any one of [1] to [22] above, which is used as an antifouling coating agent or a waterproof coating agent.

[24] A pellet containing the surface treatment agent according to any one of [1] to [23] above.

[25] An article comprising a substrate and a layer formed on the substrate with the surface treatment agent according to any one of [1] to [23] above.

[26] The article according to [25] above, wherein the substrate is a glass substrate.

[27] The article according to [26] above, which is an optical member.

According to the present disclosure, it is possible to provide a surface treatment agent that provides a surface treatment layer with higher wear durability.

As used herein, “monovalent organic group” means a monovalent group containing carbon. The monovalent organic group is not particularly limited, but may be a hydrocarbon group or a derivative thereof. A derivative of a hydrocarbon group refers to a group having one or more N, O, S, Si, amide, sulfonyl, siloxane, carbonyl, carbonyloxy, etc. at the terminal of the hydrocarbon group or in the molecular chain. Additionally, when simply expressed as “organic group”, it means a monovalent organic group. Additionally, “2- to 10-valent organic group” means a 2- to 10-valent group containing carbon. Such 2 to 10 valent organic groups are not particularly limited, but include 2 to 10 valent groups in which 1 to 9 hydrogen atoms are further removed from the organic group. For example, the divalent organic group is not particularly limited, but includes a divalent group in which one hydrogen atom is further removed from the organic group.

As used in this specification, “hydrocarbon group” refers to a group containing carbon and hydrogen, and means a group in which one hydrogen atom is removed from a hydrocarbon. Such hydrocarbon groups are not particularly limited, but include C _1-20 hydrocarbon groups that may be substituted with one or more substituents, such as aliphatic hydrocarbon groups and aromatic hydrocarbon groups. The “aliphatic hydrocarbon group” may be linear, branched, or cyclic, and may be saturated or unsaturated. Additionally, the hydrocarbon group may contain one or more ring structures.

When used in this specification, the substituent for the “hydrocarbon group” is not particularly limited, but includes, for example, a halogen atom, a C _1-6 alkyl group which may be substituted with one or more halogen atoms, and C _{2 -6} alkenyl group, C _2-6 alkynyl group, C _3-10 cycloalkyl group, C _3-10 unsaturated cycloalkyl group, 5 to 10 membered heterocyclyl group, 5 to 10 membered unsaturated heterocyclyl group, C _6- One or more groups selected from _10- membered aryl groups and 5- to 10-membered heteroaryl groups can be mentioned.

When used in this specification, “hydrolyzable group” means a group that can undergo a hydrolysis reaction, that is, a group that can be separated from the main skeleton of the compound through a hydrolysis reaction. Examples of hydrolyzable groups include -OR ^j , -OCOR ^j , -ON=CR ^j ₂ , -NR ^j ₂ , -NHR ^j , -NCO, halogen (in these formulas, R ^j is substituted or unsubstituted C _{1- 4} represents an alkyl group), and the like.

The surface treatment agent of the present disclosure is a surface treatment agent containing a fluoropolyether group-containing silane compound and a lower fluoroalkyl alcohol.

The surface treatment agent of the present disclosure can provide a surface treatment layer with improved friction resistance by further containing a lower fluoroalkyl alcohol in addition to the fluoropolyether group-containing silane compound.

(Silane compound containing fluoropolyether group)

The fluoropolyether group-containing silane compound is a compound that contains fluorine and can form a surface treatment layer with antifouling properties.

In one aspect, the fluoropolyether group-containing silane compound has the following formula (1) or (2):

[Formula:

R ^F1 is, at each occurrence, independently Rf ¹ -R ^F -O _q -;

R ^F2 is -Rf ² _p -R ^F -O _q -;

Rf ¹ is, at each occurrence, independently a C _1-16 alkyl group which may be substituted with one or more fluorine atoms;

Rf ² is a C _1-6 alkylene group which may be substituted with one or more fluorine atoms;

R ^F each independently represents a divalent fluoropolyether group;

p is 0 or 1;

q is independently 0 or 1 for each occurrence;

R ^Si is, at each occurrence, independently a monovalent group containing a Si atom to which a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent organic group is bonded;

At least one R ^Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded;

X ^A each independently represents a single bond or a 2- to 10-valent organic group;

α is an integer from 1 to 9;

β is an integer from 1 to 9;

γ is each independently an integer from 1 to 9]

It is a silane compound containing at least one fluoropolyether group represented by .

In the above formula (1), R ^F1 is independently Rf ¹ -R ^F -O _q - in each occurrence.

In the above formula (2), R ^F2 is -Rf ² _p -R ^F -O _q -.

In the above formula, Rf ¹ is independently a C _1-16 alkyl group that may be substituted by one or more fluorine atoms at each occurrence.

The "C _1-16 alkyl group" in the C _1-16 alkyl group which may be substituted by one or more fluorine atoms may be straight chain or branched, and is preferably straight chain or branched C _1- It is a _6- alkyl group, especially a C _1-3 alkyl group, and more preferably a straight-chain C _1-6 alkyl group, especially a C _1-3 alkyl group.

The Rf ¹ is preferably a C _1-16 alkyl group substituted with one or more fluorine atoms, more preferably a CF ₂ HC _1-15 perfluoroalkylene group, and even more preferably a C ₁ It is a _-16 perfluoroalkyl group.

The C _1-16 perfluoroalkyl group may be straight chain or branched, and is preferably a straight or branched C _1-6 perfluoroalkyl group, especially a C 1-3 perfluoroalkyl group, and more preferably a C _1-3 perfluoroalkyl group. is a straight-chain C _1-6 perfluoroalkyl group, especially a C _1-3 perfluoroalkyl group, specifically -CF ₃ , -CF ₂ CF ₃ , or -CF ₂ CF ₂ CF ₃ .

In the above formula, Rf ² is a C _1-6 alkylene group that may be substituted with one or more fluorine atoms.

The “C _1-6 alkylene group” in the C _1-6 alkylene group which may be substituted by one or more fluorine atoms may be straight chain or branched, and is preferably a straight or branched C It is a _1-3 alkylene group, and more preferably a straight chain C _1-3 alkylene group.

The Rf ² is preferably a C _1-6 alkylene group substituted with one or more fluorine atoms, more preferably a C _1-6 perfluoroalkylene group, and even more preferably a C _1-6 alkylene group. ₃ It is a perfluoroalkylene group.

The C _1-6 perfluoroalkylene group may be straight-chain or branched, and is preferably a straight-chain or branched C _1-3 perfluoroalkylene group, and more preferably a straight-chain C _1-3 purple group. A luoroalkyl group, specifically -CF ₂ -, -CF ₂ CF ₂ -, or -CF ₂ CF ₂ CF ₂ -.

In the above formula, p is 0 or 1. In one aspect, p is 0. In another embodiment, p is 1.

In the above formula, q is independently 0 or 1 in each occurrence. In one aspect, q is 0. In another embodiment, q is 1.

In the above formulas (1) and (2), R ^F each independently represents a divalent fluoropolyether group in each occurrence.

R ^F is preferably:

-(OC _h1 R ^Fa _2h1 ) _h3 -(OC _h2 R ^Fa _2h2-2 ) _h4 -

[Formula:

R ^Fa is, in each occurrence, independently a hydrogen atom, a fluorine atom, or a chlorine atom,

h1 is an integer from 1 to 6,

h2 is an integer from 4 to 8,

h3 is an integer greater than or equal to 0,

h4 is an integer greater than or equal to 0,

However, the composition 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 enclosed in parentheses with h3 and h4 is arbitrary in the formula.]

It may include a group represented by .

In one aspect, R ^F may be linear or branched. R ^F is preferably expressed by the formula:

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ R ^Fa ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -

[Formula:

R ^Fa is, in each occurrence, independently a hydrogen atom, a fluorine atom, or a chlorine atom,

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 enclosed in parentheses with a, b, c, d, e or f is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more]

It is a group represented by .

R ^Fa is preferably a hydrogen atom or a fluorine atom, and more preferably a fluorine atom. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more.

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

The sum of a, b, c, d, e and f is preferably 5 or more, more preferably 10 or more, and may be, for example, 15 or more or 20 or more. The sum of a, b, c, d, e and f is preferably 200 or less, more preferably 100 or less, further preferably 60 or less, and may be, for example, 50 or less or 30 or less.

These repeating units may be linear or branched. For example, -(OC ₆ F ₁₂ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ CF ₂ CF ₂ CF ₂ CF ₂ )-, -( OCF ₂ CF(CF ₃ CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ CF(CF ₃ CF ₂ )-, - (OCF ₂ CF ₂ CF ₂ CF ₂ CF(CF ₃ ))- etc. -(OC ₅ F ₁₀ )- is -(OCF ₂ CF 2 CF ₂ CF _{2 CF 2} )-, -(OCF(CF ₃ CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ CF( CF ₃ ))- etc. -(OC ₄ F ₈ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ CF ₂ CF ₂ )-, -(OCF ₂ CF (CF ₃ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ ))-, -(OC(CF ₃ ) ₂ CF ₂ )-, -(OCF ₂ C(CF ₃ ) ₂ )-, -( OCF(CF ₃ CF(CF ₃ ))-, -(OCF(C ₂ F ₅ CF ₂ )-, and -(OCF ₂ CF(C ₂ F ₅ ))- may be any of -(OC ₃ F ₆ )-(i.e., in the above formula, R ^Fa is a fluorine atom) is -(OCF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ CF ₂ )- and -(OCF ₂ CF(CF ₃ )) - may be any of -(OC ₂ F ₄ )- may be any of -(OCF ₂ CF ₂ )- and -(OCF(CF ₃ ))-.

In one aspect, the repeating unit is linear. By making the repeating units linear, the surface slipperiness and wear durability of the surface treatment layer can be improved.

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

In one aspect, R ^F may include a ring structure.

The ring structure may be the following 3-membered ring, 4-membered ring, 5-membered ring, or 6-membered ring.

[In the formula, * represents the binding position.]

The ring structure may be preferably a 4-membered ring, a 5-membered ring, or a 6-membered ring, and more preferably a 4-membered ring or a 6-membered ring.

The repeating unit having a ring structure may preferably be the following unit.

[In the formula, * represents the binding position.]

In one aspect, R ^F is a group independently represented by any of the following formulas (f1) to (f6) in each occurrence.

-(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1)

[Wherein, d is an integer from 1 to 200, and e is 0 or 1];

-(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f2)

[In the formula, c and d are each independently integers from 0 to 30, and e and f are each independently integers from 1 to 200,

The sum of c, d, e and f is at least 2,

The order of existence of each repeating unit enclosed in parentheses with the subscript c, d, e or f is arbitrary in the formula];

-(R ⁶ -R ⁷ ) _g - (f3)

[Wherein, R ⁶ is OCF ₂ or OC ₂ F ₄ ;

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or a combination of 2 or 3 groups independently selected from these groups and

g is an integer from 2 to 100];

-(R ⁶ -R ⁷ ) _g -R ^r -(R ^7' -R ^6' ) _g' - (f4)

[Wherein, R ⁶ is OCF ₂ or OC ₂ F ₄ ;

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or a combination of 2 or 3 groups independently selected from these groups and

R ^6' is OCF ₂ or OC ₂ F ₄ ,

R ^7' is OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or a combination of 2 or 3 groups independently selected from these groups,

g is an integer from 2 to 100,

g' is an integer from 2 to 100,

R ^r is,

(In the formula, * indicates the binding position)

lim] ;

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f5)

[In the formula, e is an integer from 1 to 200, and a, b, c, d, and f are each independently integers from 0 to 200, and a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the equation]

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f6)

[In the formula, f is an integer from 1 to 200, and a, b, c, d, and e are each independently integers from 0 to 200, and a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the equation]

In the above formula (f1), d is an integer of preferably 5 to 200, more preferably 10 to 100, further preferably 15 to 50, for example 25 to 35. In one aspect, e is 1. In another aspect, e is 0. In the above formula (f1), -(OC ₃ F ₆ ) _d - is preferably a group represented by -(OCF ₂ CF ₂ CF ₂ ) _d - or -(OCF(CF ₃ CF ₂ ) _d -, More preferably, it is a group represented by -(OCF ₂ CF ₂ CF ₂ ) _d -.

In the above formula (f2), e and f are each independently an integer of preferably 5 to 200, more preferably 10 to 200. Additionally, the sum of c, d, e, and f is preferably 5 or more, more preferably 10 or more, and may be, for example, 15 or more or 20 or more. In one aspect, the formula (f2) is preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ ) _c -(OCF ₂ CF ₂ CF ₂ ) _d -(OCF ₂ CF ₂ ) _e -(OCF ₂ ) It is a group represented by _f -. In another aspect, equation (f2) also has a contribution expressed as -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -.

In the above formula (f3), R ⁶ is preferably OC ₂ F ₄ . In (f3) above, R ⁷ is preferably a group selected from OC ₂ F ₄ , OC ₃ F ₆ and OC ₄ F ₈ , or a combination of 2 or 3 groups independently selected from these groups. , and more preferably, it is a group selected from OC ₃ F ₆ and OC ₄ F ₈ . The combination of two or three groups independently selected from OC ₂ F ₄ , OC ₃ F ₆ and OC ₄ F ₈ is not particularly limited, but includes, for example, -OC ₂ F ₄ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₄ F ₈ -, -OC ₃ F ₆ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₃ F ₆ -, -OC ₃ F ₆ OC ₄ F ₈ -, -OC ₄ F ₈ OC ₄ F ₈ -, -OC ₄ F ₈ OC ₃ F ₆ -, -OC ₄ F ₈ OC ₂ F ₄ -, -OC ₂ F ₄ OC ₂ F ₄ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₂ F ₄ OC ₄ F ₈ -, -OC ₂ F ₄ OC ₃ F ₆ OC ₂ F ₄ -, -OC ₂ F ₄ OC ₃ F ₆ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₄ F ₈ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₂ F ₄ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₂ F ₄ OC ₃ F ₆ -, -OC ₃ F ₆ OC ₃ F ₆ OC ₂ F ₄ -, and -OC ₄ F ₈ OC ₂ F ₄ OC ₂ F ₄ - and the like. In the above formula (f3), g is an integer of preferably 3 or more, more preferably 5 or more. The g is preferably an integer of 50 or less. In the above formula (f3), OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ may be either straight chain or branched, and are preferably straight chain. In this aspect, the formula (f3) is preferably -(OC ₂ F ₄ -OC ₃ F ₆ ) _g - or -(OC ₂ F ₄ -OC ₄ F ₈ ) _g -.

In the formula (f4), R ⁶ , R ⁷ and g have the same meanings as those described in the formula (f3) and have similar aspects. R ^{6 '} , R ^7' and g' each have the same meaning as R ⁶ , R ⁷ and g described in the above formula (f3), and have similar aspects. R ^r is preferably

[In the formula, * indicates the binding position]

, and more preferably

[In the formula, * indicates the binding position]

am.

In the above formula (f5), e is preferably an integer of 1 to 100, more preferably 5 to 100. 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.

In the above formula (f6), f is preferably an integer of 1 to 100, more preferably 5 to 100. 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.

In one aspect, R ^F is a group represented by the formula (f1).

In one aspect, R ^F is a group represented by the formula (f2).

In one aspect, R ^F is a group represented by the formula (f3) or (f4).

In one aspect, R ^F is a group represented by the formula (f3).

In one aspect, R ^F is a group represented by the formula (f4).

In one aspect, R ^F is a group represented by the formula (f5).

In one aspect, R ^F is a group represented by the formula (f6).

In the above R ^F , 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, and even more preferably Typically, it is 0.2 to 1.5, and more preferably 0.2 to 0.85. By setting the e/f ratio to 10 or less, the slipperiness, abrasion durability, and chemical resistance (for example, durability against artificial sweat) of the surface treatment layer obtained from this compound are further improved. The smaller the e/f ratio, the more improved the slipperiness and wear durability of the surface treatment layer. On the other hand, by setting the e/f ratio to 0.1 or more, the stability of the compound can be further improved. The larger the e/f ratio, the more improved the stability of the compound.

In the above fluoropolyether group-containing silane compound, the number average molecular weight of the R ^F1 and R ^F2 portions is not particularly limited, but is, for example, 500 to 30,000, preferably 1,500 to 30,000, more preferably 2,000 to 2,000. It's 10,000. In this specification, the number average molecular weight of R ^F1 and R ^F2 is the value measured by ¹⁹ F-NMR.

In another embodiment, the number average molecular weight of the R ^F1 and R ^F2 moieties is 500 to 30,000, preferably 1,000 to 20,000, more preferably 2,000 to 15,000, even more preferably 2,000 to 10,000, for example 3,000 to 3,000. It could be 6,000.

In another aspect, the number average molecular weight of the R ^F1 and R ^F2 portions may be 4,000 to 30,000, preferably 5,000 to 10,000, and more preferably 6,000 to 10,000.

In the above formulas (1) and (2), R ^Si is, at each occurrence, independently a monovalent group containing a Si atom to which a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent organic group is bonded, and at least 1 R ^Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded.

Here, “hydrolyzable group” means a group that can undergo a hydrolysis reaction, that is, a group that can be separated from the main skeleton of the compound through a hydrolysis reaction. Examples of hydrolyzable groups include -OR ^j , -OCOR ^j , -ON=CR ^j ₂ , -NR ^j ₂ , -NHR ^j , -NCO, halogen (in these formulas, R ^j is substituted or unsubstituted C _{1- 4} represents an alkyl group), and the like.

In a preferred embodiment, R ^Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded.

In a preferred embodiment, R ^Si has the following formula (S1), (S2), (S3), or (S4):

It is a group represented by .

In the above formula, R ¹¹ is independently a hydroxyl group or a hydrolyzable group in each occurrence.

R ¹¹ is preferably a hydrolyzable group, each independently occurring in each occurrence.

R ¹¹ is preferably each independently in each occurrence -OR ^j , -OCOR ^j , -ON=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), and more preferably -OR ^j (i.e., an alkoxy group). Examples of R ^j include unsubstituted alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, and isobutyl group; and substituted alkyl groups such as chloromethyl group. Among them, an alkyl group, especially an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. In one aspect, R ^j is a methyl group, and in another aspect, R ^j is an ethyl group.

In the above formula, each occurrence of R ¹² independently represents a hydrogen atom or a monovalent organic group. These monovalent organic groups are monovalent organic groups excluding the hydrolyzable groups mentioned above.

For R ¹² , the monovalent organic group is preferably a C _1-20 alkyl group, more preferably a C _1-6 alkyl group, and even more preferably a methyl group.

In the above formula, n1 is an integer of 0 to 3 independently for each (SiR ¹¹ _n1 R ¹² _{3 -n1} ) unit. However, when R ^Si is a group represented by formula (S1) or (S2), the ^RSi portion at the terminal of formula (1) and formula (2) (hereinafter simply referred to as the “terminal end” of formula (1) and formula (2) (also referred to as “part”), there is at least one (SiR ¹¹ _n1 R ¹² _{3 -n1} ) unit where n1 is 1 to 3. That is, in this terminal portion, all n1 do not become 0 at the same time. In other words, in the terminal portions of formulas (1) and (2), at least one Si atom to which a hydroxyl group or a hydrolyzable group is bonded exists.

n1 is each independently for each (SiR ¹¹ _n1 R ¹² _{3 -n1} ) unit, and is preferably an integer of 1 to 3, more preferably 2 to 3, and still more preferably 3.

In the above formula, each occurrence of X ¹¹ independently represents a single bond or a divalent organic group. This divalent ^{organic group} _is preferably ^{-R 28} _-O is 0 or 1). This C _1-20 alkylene group may be straight chain or branched, but is preferably straight chain. This C _1-20 alkylene group is preferably a C _1-10 alkylene group, more preferably a C _1-6 alkylene group, and even more preferably a C _1-3 alkylene group.

In one embodiment, X ¹¹ in each occurrence is independently -C _1-6 alkylene-OC _1-6 alkylene- or -OC _1-6 alkylene-.

In a preferred ^embodiment , _each occurrence _of It is a bonded or straight-chain C _1-2 alkylene group, and more preferably a straight-chain C _1-2 alkylene group.

In the above formula, each occurrence of R ¹³ independently represents a hydrogen atom or a monovalent organic group. This monovalent organic group is preferably a C _1-20 alkyl group. This C _1-20 alkyl group may be straight chain or branched, but is preferably straight chain.

In a preferred embodiment, R ¹³ each independently represents a hydrogen atom or a straight-chain C _1-6 alkyl group, preferably a hydrogen atom or a straight-chain C _1-3 alkyl group, preferably a hydrogen atom or a methyl group. am.

In the above formula, t is an integer of 2 or more independently in each occurrence.

In a preferred embodiment, t is an integer of 2 to 10, preferably 2 to 6, independently in each occurrence.

In the above formula, R ¹⁴ in each occurrence is independently a hydrogen atom, _a halogen atom, or -X ¹¹ -SiR ¹¹ _n1 R ¹² _{3 -n1} . This halogen atom is preferably an iodine atom, a chlorine atom, or a fluorine atom, and more preferably a fluorine atom. In a preferred embodiment, R ¹⁴ is a hydrogen atom.

In the above formula, R ¹⁵ in each occurrence is independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms.

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

In a preferred embodiment, R ¹⁵ is a single bond.

In one aspect, formula (S1) is the following formula (S1-a).

[During the ceremony,

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

t1 and t2 are each independently in each occurrence an integer of 1 or more, preferably an integer of 1 to 10, more preferably an integer of 2 to 10, for example, an integer of 1 to 5 or an integer of 2 to 5. and;

The order of existence of each repeating unit enclosed in parentheses with t1 and t2 is arbitrary in the formula.]

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

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

In the above formula, R ^a1 is independently -Z ¹ -SiR ²¹ _p1 R ²² _q1 R ²³ _r1 in each occurrence.

Each occurrence of Z ¹ is independently an oxygen atom or a divalent organic group. In addition, the right side of the structure described as Z ¹ below is bonded to (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ).

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

In a preferred embodiment, Z ¹ does not form a siloxane bond with the Si atom to which Z ¹ is bonded. Preferably, in formula (S3), (Si-Z ¹ -Si) does not contain a siloxane bond.

The Z ¹ is preferably a C _1-6 alkylene group, -(CH ₂ ) _z1 -O-(CH ₂ ) _z2 -(wherein, z1 is an integer of 0 to 6, for example, of 1 to 6. is an integer, and z2 is an integer of 0 to 6, for example, an integer of 1 to 6) or -(CH ₂ ) _z3 -phenylene-(CH ₂ ) _z4 -(wherein z3 is an integer of 0 to 6) , for example, an integer of 1 to 6, and z4 is an integer of 0 to 6, for example, an integer of 1 to 6). This C _1-6 alkylene group may be straight chain or branched, but is preferably straight chain. These groups may be substituted by, for example, one or more substituents selected from fluorine atoms, C _1-6 alkyl groups, C _2-6 alkenyl groups, and C _2-6 alkynyl groups, but are preferably unsubstituted. am.

In a preferred embodiment, Z ¹ is a C _1-6 alkylene group or -(CH ₂ ) _z3 -phenylene-(CH ₂ ) _z4 -, preferably -phenylene-(CH ₂ ) _z4 -. When Z ¹ is this group, light resistance, especially ultraviolet ray resistance, can be higher.

In another preferred form, Z ¹ is a C _1-3 alkylene group. In one aspect, Z ¹ may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ¹ may be -CH ₂ CH ₂ -.

The above R ²¹ is independently -Z ^1' -SiR ^21' _p1' R ^22' _q1' R ^23' _r1' in each occurrence.

Each occurrence of Z ^1' is independently an oxygen atom or a divalent organic group. In addition, the right side of the structure described as Z ^1' is bonded to (SiR ^21' _p1' R ^22' _q1' R ^23' _{r1 '} ).

In a preferred embodiment, Z ^1' is a divalent organic group.

In a preferred embodiment, Z ^1' does not form a siloxane bond with the Si atom to which Z ^1' is bonded. Preferably, in formula (S3), (Si-Z ^1' -Si) does not contain a siloxane bond.

The Z ^1' is preferably a C _1-6 alkylene group, -(CH ₂ ) _z1' -O-(CH ₂ ) _z2' -(wherein, z1' is an integer of 0 to 6, for example is an integer from 1 to 6, and z2' is an integer from 0 to 6, for example, an integer of 1 to 6) or -(CH ₂ ) _z3' -phenylene-(CH ₂ ) _z4' -(wherein, z3 ' is an integer of 0 to 6, for example, an integer of 1 to 6, and z4' is an integer of 0 to 6, for example, an integer of 1 to 6. This C _1-6 alkylene group may be straight chain or branched, but is preferably straight chain. These groups may be substituted by, for example, one or more substituents selected from fluorine atoms, C _1-6 alkyl groups, C _2-6 alkenyl groups, and C _2-6 alkynyl groups, but are preferably unsubstituted. am.

In a preferred embodiment, Z ^1' is a C _1-6 alkylene group or -(CH ₂ ) _z3' -phenylene-(CH ₂ ) _z4' -, preferably -phenylene-(CH ₂ ) _z4' - am. When Z ^{1 '} is such a group, light resistance, especially ultraviolet ray resistance, can be higher.

In another preferred form, Z ^1' is a C _1-3 alkylene group. In one aspect, Z ^1' may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ^1' may be -CH ₂ CH ₂ -.

The above R ^21' is independently -Z ^1" -SiR ^22" _q1" R ^23" _r1" in each occurrence.

The above Z ^1" is independently an oxygen atom or a divalent organic group in each occurrence. In addition, in the structure described below as Z ^1" , the right side is (SiR ^22" _q1" R ^23" _r1" ) Combine.

In a preferred embodiment, Z ^1" is a divalent organic group.

In a preferred embodiment, Z ^1" does not form a siloxane bond with the Si atom to which Z ^1" is bonded. Preferably, in formula (S3), (Si-Z ^1" -Si) does not contain a siloxane bond.

The Z ^1" is preferably a C _1-6 alkylene group, -(CH ₂ ) _z1" -O-(CH ₂ ) _z2" -(wherein z1" is an integer of 0 to 6, for example is an integer of 1 to 6, and z2" is an integer of 0 to 6, for example, 1 to 6) or -(CH ₂ ) _z3" -phenylene-(CH ₂ ) _z4" -(wherein: z3" is an integer of 0 to 6, for example, an integer of 1 to 6, and z4" is an integer of 0 to 6, for example, an integer of 1 to 6. This C _1-6 alkylene group is: It may be straight chain or branched, but is preferably straight chain.These groups include, for example, one or more selected from the group consisting of a fluorine atom, a C _1-6 alkyl group, a C _2-6 alkenyl group, and a C _2-6 alkynyl group. It may be substituted by the above substituents, but is preferably unsubstituted.

In a preferred embodiment, Z ^1" is a C _1-6 alkylene group or -(CH ₂ ) _z3" -phenylene-(CH ₂ ) _z4" -, preferably -phenylene-(CH ₂ ) _z4" - am. When Z ^{1 "} is such a group, light resistance, especially ultraviolet ray resistance, can be higher.

In another preferred form, Z ^1" is a C _1-3 alkylene group. In one embodiment, Z ^1" may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ^1" may be -CH ₂ CH ₂ -.

The above R ^{22 "} in each occurrence is independently a hydroxyl group or a hydrolyzable group.

The R ^22" is preferably a hydrolyzable group independently in each occurrence.

Said R ^{22 "} , preferably independently in each occurrence, -OR ^j , -OCOR ^j , -ON=CR ^j ₂ , -NR ^j ₂ , -NHR ^j , -NCO, or halogen (among 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 , methyl group, ethyl group, propyl group, isopropyl group, n -Unsubstituted alkyl groups such as butyl group and isobutyl group; and substituted alkyl groups such as chloromethyl group. Among them, alkyl groups, especially unsubstituted alkyl groups, are preferable, and methyl or ethyl groups are more preferable. In one aspect, R ^j is a methyl group, and in another aspect, R ^j is an ethyl group.

Each occurrence of R ^23" is independently a hydrogen atom or a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the hydrolyzable group.

For R ^{23 "} , the monovalent organic group is preferably a C _1-20 alkyl group, more preferably a C _1-6 alkyl group, and even more preferably a methyl group.

The q1" is an integer of 0 to 3 independently in each occurrence, and the r1" is an integer of 0 to 3 independently in each occurrence. Additionally, the sum of q1" and r1" is 3 in (SiR ^22" _q1" R ^23" _{r1 "} ) units.

The q1" is each independently for each (SiR ^22" _q1" R ^23" _{r1 "} ) unit, and is preferably an integer of 1 to 3, more preferably 2 to 3, and still more preferably 3.

Each occurrence of R ^22' is independently a hydroxyl group or a hydrolyzable group.

R ^22' is preferably a hydrolyzable group independently in each occurrence.

R ^22' is preferably each independently in each occurrence -OR ^j , -OCOR ^j , -ON=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), and is more preferably -OR ^j (i.e., an alkoxy group). Examples of R ^j include unsubstituted alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, and isobutyl group; and substituted alkyl groups such as chloromethyl group. Among them, an alkyl group, especially an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. In one aspect, R ^j is a methyl group, and in another aspect, R ^j is an ethyl group.

Each occurrence of R ^23' is independently a hydrogen atom or a monovalent organic group. These monovalent organic groups are monovalent organic groups excluding the hydrolyzable groups mentioned above.

For R ^23' , the monovalent organic group is preferably a C _1-20 alkyl group, more preferably a C _1-6 alkyl group, and even more preferably a methyl group.

The p1' is an integer of 0 to 3, independently in each occurrence, q1' is an integer of 0 to 3, independently in each occurrence, and r1' is independently an integer in each occurrence. , is an integer from 0 to 3. Additionally, the sum of p', q1' and r1' is 3 in the unit (SiR ^21' _p1' R ^22' _q1' R ^23' _r1') .

In one aspect, p1' is 0.

In one aspect, p1' may be an integer of 1 to 3, an integer of 2 to 3, or 3 independently for each (SiR ^21' _p1' R ^22' _q1' R ^23' _{r1 '} ) unit. In a preferred embodiment, p1' is 3.

In one aspect, q1' is an integer of 1 to 3, preferably an integer of 2 to 3, independently for each (SiR ^21' _p1' R ^22' _q1' R ^23' _{r1 '} ) unit. Hage is 3.

In one embodiment, p1' is 0, and q1' is an integer of 1 to 3, each independently for each (SiR ^21' _p1' R ^22' _q1' R ^23' _{r1 '} ) unit, preferably 2 to 2. It is an integer of 3, more preferably 3.

Each occurrence of R ²² is independently a hydroxyl group or a hydrolyzable group.

R ²² is preferably a hydrolyzable group independently in each occurrence.

R ²² is preferably each independently in each occurrence -OR ^j , -OCOR ^j , -ON=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), and is more preferably -OR ^j (i.e., an alkoxy group). Examples of R ^j include unsubstituted alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, and isobutyl group; and substituted alkyl groups such as chloromethyl group. Among them, an alkyl group, especially an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. In one aspect, R ^j is a methyl group, and in another aspect, R ^j is an ethyl group.

Each occurrence of R ²³ independently represents a hydrogen atom or a monovalent organic group. These monovalent organic groups are monovalent organic groups excluding the hydrolyzable groups mentioned above.

For 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.

The p1 is an integer of 0 to 3 independently in each occurrence, q1 is an integer of 0 to 3 independently in each occurrence, and r1 is an integer of 0 to 3 independently in each occurrence. It is an integer of 3. Additionally, the sum of p1, q1 and r1 is 3 in (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) units.

In one aspect, p1 is 0.

In one aspect, p1 may be an integer of 1 to 3, an integer of 2 to 3, or 3 independently for each (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) unit. In a preferred embodiment, p1 is 3.

In one aspect, q1 is an integer of 1 to 3, preferably an integer of 2 to 3, and more preferably 3, independently for each (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) unit.

In one embodiment, p1 is 0, and q1 is, each independently for each (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) unit, an integer of 1 to 3, preferably an integer of 2 to 3, more preferably It is 3.

In the above formula, R ^b1 is independently a hydroxyl group or a hydrolyzable group in each occurrence.

Said R ^b1 is preferably a hydrolyzable group, each independently in each occurrence.

Said R ^b1 is preferably, independently of each occurrence, -OR ^j , -OCOR ^j , -ON=CR ^j ₂ , -NR ^j ₂ , -NHR ^j , -NCO, or halogen (among these formulas, R ^j represents a substituted or unsubstituted C _1-4 alkyl group), and is more preferably -OR ^j (i.e., an alkoxy group). Examples of R ^j include unsubstituted alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, and isobutyl group; and substituted alkyl groups such as chloromethyl group. Among them, an alkyl group, especially an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. In one aspect, R ^j is a methyl group, and in another aspect, R ^j is an ethyl group.

In the above formula, R ^c1 is independently a hydrogen atom or a monovalent organic group in each occurrence. These monovalent organic groups are monovalent organic groups excluding the hydrolyzable groups mentioned above.

In R ^c1 , the monovalent organic group is preferably a C _1-20 alkyl group, more preferably a C _1-6 alkyl group, and even more preferably a methyl group.

The k1 is an integer of 0 to 3 independently in each occurrence, l1 is an integer of 0 to 3 independently in each occurrence, and m1 is an integer of 0 to 3 independently in each occurrence. It is an integer of 3. Additionally, the sum of k1, l1 and m1 is 3 in units of (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ).

In one aspect, k1 is an integer of 1 to 3, each independently for each (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit, preferably 2 or 3, and more preferably 3. In a preferred embodiment, k1 is 3.

In the above formulas (1) and (2), when R ^Si is a group represented by the formula (S3), preferably Si to which a hydroxyl group or a hydrolyzable group is bonded to the terminal portion of the formulas (1) and (2) There are at least 2 atoms.

In a preferred embodiment, the group represented by the formula (S3) is -Z ¹ -SiR ²² _q1 R ²³ _r1 (wherein q1 is an integer of 1 to 3, preferably 2 or 3, more preferably 3) and r1 is an integer of 0 to 2), -Z ^1' -SiR ^22' _q1' R ^23' _r1' (wherein, q1' is an integer of 1 to 3, preferably 2 or 3, Preferably it is 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, and is preferably It is preferably 2 or 3, more preferably 3, and r1" is an integer of 0 to 2). Z ¹ , Z ^1' , Z ^1" , R ²² , R ²³ , R ^22' , R ^23' , R ^22" , and R ^23" have the same meaning as above.

In a preferred embodiment, in formula (S3), when R ^21' is present, for at least one, preferably all R ^21' , q1" is an integer of 1 to 3, preferably 2 or 3, more preferably 3.

In a preferred embodiment, in formula (S3), when R ²¹ is present, for at least one, preferably all R ²¹ , p1' is 0, q1' is an integer of 1 to 3, Preferably it is 2 or 3, more preferably 3.

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

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.

R ^d1 is independently -Z ² -CR ³¹ _p2 R ³² _q2 R ³³ _r2 in each occurrence.

Each occurrence of Z ² is independently a single bond, an oxygen atom, or a divalent organic group. In addition, in the structure described below as Z ² , the right side is bonded to (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ).

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

The Z ² is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5 -O-(CH ₂ ) _z6 -(wherein, z5 is an integer of 0 to 6, for example, of 1 to 6. is an integer, and z6 is an integer of 0 to 6, for example, an integer of 1 to 6) or -(CH ₂ ) _z7 -phenylene-(CH ₂ ) _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). This C _1-6 alkylene group may be straight chain or branched, but is preferably straight chain. These groups may be substituted by, for example, one or more substituents selected from fluorine atoms, C _1-6 alkyl groups, C _2-6 alkenyl groups, and C _2-6 alkynyl groups, but are preferably unsubstituted. am.

In a preferred embodiment, Z ² is a C _1-6 alkylene group or -(CH ₂ ) _z7 -phenylene-(CH ₂ ) _z8 -, preferably -phenylene-(CH ₂ ) _z8 -. When Z ² is such a group, light resistance, especially ultraviolet ray resistance, can be higher.

In another preferred form, Z ² is a C _1-3 alkylene group. In one aspect, Z ² may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ² may be -CH ₂ CH ₂ -.

R ³¹ is independently -Z ^2' -CR ^32' _q2' R ^33' _r2' in each occurrence.

Z ^2' in each occurrence is independently a single bond, an oxygen atom, or a divalent organic group. In addition, the right side of the structure described as Z ^2' is bonded to (CR ^32' _q2' R ^33' _r2' ).

The Z ^2' is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5' -O-(CH ₂ ) _z6' -(wherein, z5' is an integer of 0 to 6, for example is an integer of 1 to 6, and z6' is an integer of 0 to 6, for example, 1 to 6) or -(CH ₂ ) _z7' -phenylene-(CH ₂ ) _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. This C _1-6 alkylene group may be straight chain or branched, but is preferably straight chain. These groups may be substituted by, for example, one or more substituents selected from fluorine atoms, C _1-6 alkyl groups, C _2-6 alkenyl groups, and C _2-6 alkynyl groups, but are preferably unsubstituted. am.

In a preferred embodiment, Z ^2' is a C _1-6 alkylene group or -(CH ₂ ) _z7' -phenylene-(CH ₂ ) _z8' -, preferably -phenylene-(CH ₂ ) _z8' - am. When Z ^{2 '} is such a group, light resistance, especially ultraviolet ray resistance, can be higher.

In another preferred form, Z ^2' is a C _1-3 alkylene group. In one aspect, Z ^2' may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ^2' may be -CH ₂ CH ₂ -.

The above R ^32' is independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 in each occurrence.

Each occurrence of Z ³ is independently a single bond, an oxygen atom, or a divalent organic group. In addition, in the structure described below as Z ³ , the right side is bonded to (SiR ³⁴ _n2 R ³⁵ _{3 -n2} ).

In one aspect, Z ³ is an oxygen atom.

In one aspect, Z ³ is a divalent organic group.

The Z ³ is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5" -O-(CH ₂ )z _6" -(wherein, z5" is an integer of 0 to 6, for example is an integer of 1 to 6, and z6" is an integer of 0 to 6, for example, 1 to 6) or -(CH ₂ ) _z7" -phenylene-(CH ₂ ) _z8" -(wherein, z7 "is an integer from 0 to 6, for example, an integer from 1 to 6, and z8" is an integer from 0 to 6, for example, an integer from 1 to 6. This C _1-6 alkylene group may be straight chain or branched, but is preferably straight chain. These groups may be substituted by, for example, one or more substituents selected from fluorine atoms, C _1-6 alkyl groups, C _2-6 alkenyl groups, and C _2-6 alkynyl groups, but are preferably unsubstituted. am.

In a preferred embodiment, Z ³ is a C _1-6 alkylene group or -(CH ₂ ) _z7" -phenylene-(CH ₂ ) _z8" -, preferably -phenylene-(CH ₂ ) _z8" - When Z ³ is this group, light resistance, especially ultraviolet ray resistance, can be higher.

In another preferred form, Z ³ is a C _1-3 alkylene group. In one aspect, Z ³ may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ³ may be -CH ₂ CH ₂ -.

Each occurrence of R ³⁴ is independently a hydroxyl group or a hydrolyzable group.

R ³⁴ is preferably a hydrolyzable group independently in each occurrence.

R ³⁴ is preferably each independently in each occurrence -OR ^j , -OCOR ^j , -ON=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), and more preferably -OR ^j (i.e., an alkoxy group). Examples of R ^j include unsubstituted alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, and isobutyl group; and substituted alkyl groups such as chloromethyl group. Among them, an alkyl group, especially an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. In one aspect, R ^j is a methyl group, and in another aspect, R ^j is an ethyl group.

Each occurrence of R ³⁵ independently represents a hydrogen atom or a monovalent organic group. These monovalent organic groups are monovalent organic groups excluding the hydrolyzable groups mentioned above.

For 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.

In the above formula, n2 is an integer of 0 to 3 independently for each (SiR ³⁴ _n2 R ³⁵ _{3 -n2} ) unit. However, when R ^Si is a group represented by formula (S4), in the terminal portion of formula (1) and formula (2), the (SiR ³⁴ _n2 R ³⁵ _{3 -n2} ) unit where n2 is 1 to 3 is at least 1. Dogs exist. That is, in these terminal portions, all n2s never become 0 at the same time. In other words, in the terminal portions of formulas (1) and (2), at least one Si atom to which a hydroxyl group or a hydrolyzable group is bonded exists.

n2 is each independently for each (SiR ³⁴ _n2 R ³⁵ _{3 -n2} ) unit, and is preferably an integer of 1 to 3, more preferably 2 to 3, and still more preferably 3.

Each occurrence of R ^33' is independently a hydrogen atom, a hydroxyl group, or a monovalent organic group. These monovalent organic groups are monovalent organic groups excluding the hydrolyzable groups mentioned above.

For R ^33' , the monovalent organic group is preferably a C _1-20 alkyl group or -(C _s H _2s ) _t1 -(OC _s H _2s ) _t2 (wherein s is an integer of 1 to 6, Preferably it is an integer of 2 to 4, t1 is 1 or 0, preferably 0, and t2 is an integer of 1 to 20, preferably an integer of 2 to 10, more preferably an integer of 2 to 6. , more preferably a C _1-20 alkyl group, even more preferably a C _1-6 alkyl group, and particularly preferably a methyl group.

In one aspect, R ^33' is a hydroxyl group.

In another aspect, R ^33' is a monovalent organic group, preferably a C _1-20 alkyl group, and more preferably a C _1-6 alkyl group.

The q2' is an integer of 0 to 3 independently in each occurrence, and the r2' is an integer of 0 to 3 independently in each occurrence. Additionally, the sum of q2' and r2' is 3 in units of (CR ^32' _q2' R ^33' _{r2 '} ).

q2' is each independently for each (CR ^32' _q2' R ^33' _{r2 '} ) unit, and is preferably an integer of 1 to 3, more preferably 2 to 3, and still more preferably 3.

R ³² is independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _{3 -n2} in _each occurrence. This -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 has the same meaning as described for R ^32' above.

Each occurrence of R ³³ independently represents a hydrogen atom, a hydroxyl group, or a monovalent organic group. These monovalent organic groups are monovalent organic groups excluding the hydrolyzable groups mentioned above.

For R ³³ , the monovalent organic group is preferably a C _1-20 alkyl group or -(C _s H _2s ) _t1 -(OC _s H _2s ) _t2 (wherein s is an integer of 1 to 6, preferably Typically, it is an integer of 2 to 4, t1 is 1 or 0, preferably 0, and t2 is an integer of 1 to 20, preferably an integer of 2 to 10, more preferably an integer of 2 to 6. , more preferably a C _1-20 alkyl group, even more preferably a C _1-6 alkyl group, and particularly preferably a methyl group.

In one aspect, R ³³ is a hydroxyl group.

In another aspect, R ³³ is a monovalent organic group, preferably a C _1-20 alkyl group, and more preferably a C _1-6 alkyl group.

The p2 is an integer of 0 to 3 independently in each occurrence, q2 is an integer of 0 to 3 independently in each occurrence, and r2 is an integer of 0 to 3 independently in each occurrence. It is an integer of 3. Additionally, the sum of p2, q2, and r2 is 3 in units of (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ).

In one aspect, p2 is 0.

In one aspect, p2 may be an integer of 1 to 3, an integer of 2 to 3, or 3 independently for each (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ) unit. In a preferred embodiment, p2 is 3.

In one aspect, q2 is, each independently for each (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ) unit, an integer of 1 to 3, preferably an integer of 2 to 3, and more preferably 3.

In one embodiment, p2 is 0, and q2 is, each independently for each (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ) unit, an integer of 1 to 3, preferably an integer of 2 to 3, more preferably It is 3.

_Each occurrence of R ^e1 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 for R ^32' above.

Each occurrence of R ^f1 is independently a hydrogen atom, a hydroxyl group, or a monovalent organic group. These monovalent organic groups are monovalent organic groups excluding the hydrolyzable groups mentioned above.

In R ^f1 , the monovalent organic group is preferably a C _1-20 alkyl group or -(C _s H _2s ) _t1 -(OC _s H _2s ) _t2 (wherein s is an integer of 1 to 6, preferably Typically, it is an integer of 2 to 4, t1 is 1 or 0, preferably 0, and t2 is an integer of 1 to 20, preferably an integer of 2 to 10, more preferably an integer of 2 to 6. , more preferably a C _1-20 alkyl group, even more preferably a C _1-6 alkyl group, and particularly preferably a methyl group.

In one aspect, R ^f1 is a hydroxyl group.

In another aspect, R ^f1 is a monovalent organic group, preferably a C _1-20 alkyl group, and more preferably a C _1-6 alkyl group.

The k2 is an integer of 0 to 3, independently of each other, l2 is an integer of 0 to 3, independently of each other, and m2 is an integer of 0 to 3, independently of each other. It is an integer of 3. Additionally, the sum of k2, l2, and m2 is 3 in units of (CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 ).

In the above formulas (1) and (2), when R ^Si is a group represented by the formula (S4), preferably Si to which a hydroxyl group or a hydrolyzable group is bonded at the terminal portion of the formula (1) and formula (2) There are at least 2 atoms.

In one embodiment, when R ^Si is a group represented by the formula (S4), the (SiR ³⁴ _n2 R ³⁵ _{3 -n2} ) unit where n2 is 1 to 3, preferably 2 or 3, and more preferably 3, is: In each terminal portion of formula (1) and formula (2), 2 or more, for example 2 to 27, preferably 2 to 9, more preferably 2 to 6, even more preferably 2 to 3, particularly preferably 3.

In a preferred embodiment, in formula (S4), when R ^32' is present, at least one, preferably all R ^32' , n2 is an integer of 1 to 3, preferably 2 or 3. , more preferably 3.

In a preferred embodiment, in formula (S4), when R ³² is present, at least one, preferably all R ³² , n2 is an integer of 1 to 3, preferably 2 or 3. Preferably it is 3.

In a preferred embodiment, in formula (S4), when R ^e1 is present, n2 is an integer of 1 to 3, preferably 2 or 3, for at least one, preferably all R ^a1 . Preferably it is 3.

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.

The R ^g1 and R ^h1 are independently represented in each occurrence, -Z ⁴ -SiR ¹¹ _n1 R ¹² _{3 -n1} , -Z ⁴ -SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 , -Z ⁴ -CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 . Here, R ¹¹ , R ¹² , R ^a1 , R b2 , R ^c1 , R ^d1 , R ^e1 , R ^f1 , ⁿ¹ , k1, l1, m1, k2, l2 and m2 have the same meaning as above.

In a preferred embodiment, R ^g1 and R ^h1 are each independently -Z ⁴ -SiR ¹¹ _n1 R ¹² _{3 -n1} .

Each occurrence of Z ⁴ independently represents a single bond, an oxygen atom, or a divalent organic group. In addition, in the structure described below as Z ⁴ , the right side is bonded to (SiR ¹¹ _n1 R ¹² _{3 -n1} ).

In one aspect, Z ⁴ is an oxygen atom.

In one aspect, Z ⁴ is a divalent organic group.

The Z ⁴ is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5" -O-(CH ₂ ) _z6" -(wherein, z5" is an integer of 0 to 6, for example, 1 is an integer from 0 to 6, and z6" is an integer from 0 to 6, for example, 1 to 6) or -(CH ₂ ) _z7" -phenylene-(CH ₂ ) _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. This C _1-6 alkylene group may be straight chain or branched, but is preferably straight chain. These groups may be substituted by, for example, one or more substituents selected from fluorine atoms, C _1-6 alkyl groups, C _2-6 alkenyl groups, and C _2-6 alkynyl groups, but are preferably unsubstituted. am.

In a preferred embodiment, Z ⁴ is a C _1-6 alkylene group or -(CH ₂ ) _z7" -phenylene-(CH ₂ ) _z8" -, preferably -phenylene-(CH ₂ ) _z8" - When Z ³ is this group, light resistance, especially ultraviolet ray resistance, can be higher.

In another preferred form, Z ⁴ is a C _1-3 alkylene group. In one aspect, Z ⁴ may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ⁴ may be -CH ₂ CH ₂ -.

In one aspect, R ^Si is a group represented by the formula (S2), (S3), (S4), or (S5). These compounds can form a surface treatment layer with high surface slipperiness.

In one aspect, R ^Si is a group represented by the formula (S3), (S4), or (S5). Since these compounds have a plurality of hydrolyzable groups at one terminal, they adhere strongly to the substrate and can form a surface treatment layer with high abrasion durability.

In one aspect, R ^Si is a group represented by the formula (S3) or (S4). Since these compounds can have a plurality of hydrolyzable groups branched from one Si atom or C atom at one end, they can form a surface treatment layer with higher wear durability.

In one aspect, R ^Si is a group represented by the formula (S1).

In one aspect, R ^Si is a group represented by the formula (S2).

In one aspect, R ^Si is a group represented by the formula (S3).

In one aspect, R ^Si is a group represented by the formula (S4).

In one aspect, R ^Si is a group represented by the formula (S5).

In the above ^formulas ( ^{1 )} and ( ² ), It is understood as a linker that connects. Therefore, the X ^A may be a single bond or any bond as long as the compounds represented by formulas (1) and (2) can exist stably.

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 change depending on the valence of X ^A. The sum of α and β is equal to the mantissa of X ^A. For example, ^if It can be. Additionally, when X ^A is a divalent organic group, α and β are 1.

In the above formula (2), γ is an integer from 1 to 9. γ can change depending on the mantissa of X ^A. That is, γ is the value obtained by subtracting 1 from the mantissa of X ^A.

X ^A each independently represents a single bond or a 2- to 10-valent organic group;

The 2- to 10-valent organic group in X ^A is preferably a 2- to 8-valent organic group. In one aspect, these 2 to 10 valent organic groups are preferably 2 to 4 valent organic groups, and more preferably are divalent organic groups. In another aspect, the 2- to 10-valent organic group is preferably a 3- to 8-valent organic group, and more preferably a 3- to 6-valent organic group.

In one aspect, X ^A is a single bond or a divalent organic group, α is 1, and β is 1.

In one aspect, X ^A is a single bond or a divalent organic group, and γ is 1.

In one aspect, X ^A is a 3 to 6 valent organic group, α is 1, and β is 2 to 5.

In one aspect, X ^A is a 3 to 6 valent organic group, and γ is 2 to 5.

In one aspect, X ^A is a trivalent organic group, α is 1, and β is 2.

In one aspect, X ^A is a trivalent organic group, and γ is 2.

When X ^A is a single bond or a divalent organic group, formulas (1) and (2) are expressed as the following formulas (1') and (2').

In one aspect, X ^A is a single bond.

In another aspect, X ^A is a divalent organic group.

In one aspect, X ^A is, for example, a single bond or the following formula:

-(R ⁵¹ ) _p5 -(X ⁵¹ ) _q5 -

[Formula:

R ⁵¹ represents a single bond, -(CH ₂ ) _s5 - or an o-, m- or p-phenylene group, and is preferably -(CH ₂ ) _s5 -,

s5 is an integer of 1 to 20, preferably an integer of 1 to 6, more preferably an integer of 1 to 3, and even more preferably 1 or 2,

X ⁵¹ represents -(X ⁵² ) _l5 -,

In ^{each occurrence} _, Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -, -CONR ⁵⁴ -, -O-CONR ⁵⁴ -, -NR ⁵⁴ - and -(CH ₂ ) _n5 - represents a group selected from the group consisting of ,

Each occurrence of R ⁵³ independently represents a phenyl group, a C _1-6 alkyl group, or a C _1-6 alkoxy group, preferably a phenyl group or a C _1-6 alkyl group, and more preferably a methyl group,

Each occurrence of R ⁵⁴ independently represents a hydrogen atom, a phenyl group, or a C _1-6 alkyl group (preferably a methyl group),

m5, in each occurrence, is each independently an integer of 1 to 100, preferably an integer of 1 to 20,

n5, in each occurrence, is independently an integer of 1 to 20, preferably an integer of 1 to 6, more preferably an integer of 1 to 3,

l5 is an integer of 1 to 10, preferably an integer of 1 to 5, more preferably an integer of 1 to 3,

p5 is 0 or 1,

q5 is 0 or 1,

Here, at least one of p5 and q5 is 1, and the order of existence of each repeating unit enclosed in parentheses with p5 or q5 is arbitrary]

A divalent organic group represented by is included. Here, X ^A (typically the hydrogen atom of X ^A ) may be substituted by one or more substituents selected from fluorine atoms, C _1-3 alkyl groups, and C _1-3 fluoroalkyl groups. In a preferred embodiment, X ^A is not substituted by any of these groups.

In a preferred embodiment, the X ^A is each independently -(R ⁵¹ ) _p5 -(X ⁵¹ ) _q5 -R ⁵² -. R ⁵² represents a single bond, -(CH ₂ ) _t5 - or an o-, m- or p-phenylene group, and is preferably -(CH ₂ ) _t5 -. t5 is an integer of 1 to 20, preferably an integer of 2 to 6, and more preferably an integer of 2 to 3. Here, R ⁵² (typically the hydrogen atom of R ⁵² ) may be substituted by one or more substituents selected from a fluorine atom, a C _1-3 alkyl group, and a C _1-3 fluoroalkyl group. In a preferred embodiment, R ⁵⁶ is not substituted by any of these groups.

Preferably, the X ^A is each independently,

single bond,

C _1-20 alkylene group,

-R ⁵¹ -X ⁵³ -R ⁵² -, or

-X ⁵⁴ -R ⁵ -

[Wherein, R ⁵¹ and R ⁵² have the same meaning as above,

X ⁵³ silver,

-O-,

-S-,

-C(O)O-,

-CONR ⁵⁴ -,

-O-CONR ⁵⁴ -,

-Si(R ⁵³ ) ₂ -,

-(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -,

-O-(CH ₂ ) _u5 -(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -,

-O-(CH ₂ ) _u5 -Si(R ⁵³ ) ₂ -O-Si(R ⁵³ ) ₂ -CH ₂ CH ₂ -Si(R ⁵³ ) ₂ -O-Si(R ⁵³ ) ₂ -,

-O-(CH ₂ ) _u5 -Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ -,

-CONR ⁵⁴ -(CH ₂ ) _u5 -(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -,

-CONR ⁵⁴ -(CH ₂ ) _u5 -N(R ⁵⁴ )-, or

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

(Wherein, R ⁵³ , R ⁵⁴ and m5 have the same meaning as above,

u5 represents an integer of 1 to 20, preferably an integer of 2 to 6, more preferably an integer of 2 to 3),

X ⁵⁴ is,

-S-,

-C(O)O-,

-CONR ⁵⁴ -,

-O-CONR ⁵⁴ -,

-CONR ⁵⁴ -(CH ₂ ) _u5 -(Si(R ⁵⁴ ) ₂ O) _m5 -Si(R ⁵⁴ ) ₂ -,

-CONR ⁵⁴ -(CH ₂ ) _u5 -N(R ⁵⁴ )-, or

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

(In the formula, each symbol has the same meaning as above)

indicates]

It can be.

More preferably, the X ^A is each independently,

single bond,

C _1-20 alkylene group,

-(CH ₂ ) _s5 -X ⁵³ -,

-(CH ₂ ) _s5 -X ⁵³ -(CH ₂ ) _t5 -

-X ⁵⁴ -, or

-X ⁵⁴ -(CH ₂ ) _t5 -

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

am.

More preferably, the X ^A is each independently,

single bond,

C _1-20 alkylene group,

-(CH ₂ ) _s5 -X ⁵³ -(CH ₂ ) _t5 -, or

-X ⁵⁴ -(CH ₂ ) _t5 -

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

It can be.

In a preferred embodiment, the X ^A is each independently,

single bond

C _1-20 alkylene group,

-(CH ₂ ) _s5 -X ⁵³ -, or

-(CH ₂ ) _s5 -X ⁵³ -(CH ₂ ) _t5 -

[During the ceremony,

X ⁵³ is -O-, -CONR ⁵⁴ -, or -O-CONR ⁵⁴ -,

Each occurrence of R ⁵⁴ independently represents a hydrogen atom, a phenyl group, or a C _1-6 alkyl group,

s5 is an integer from 1 to 20,

t5 is an integer from 1 to 20]

It can be.

In a preferred embodiment, the X ^A is each independently,

-(CH ₂ ) _s5 -O-(CH ₂ ) _t5 -

-CONR ⁵⁴ -(CH ₂ ) _t5 -

[During the ceremony,

Each occurrence of R ⁵⁴ independently represents a hydrogen atom, a phenyl group, or a C _1-6 alkyl group,

s5 is an integer from 1 to 20,

t5 is an integer from 1 to 20]

It can be.

In one aspect, the X ^A is each independently,

single bond,

C _1-20 alkylene group,

-(CH ₂ ) _s5 -O-(CH ₂ ) _t5 -,

-(CH ₂ ) _s5 -(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -(CH ₂ ) _t5 -,

-(CH ₂ ) _s5 -O-(CH ₂ ) _u5 -(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -(CH ₂ ) _t5 -, or

-(CH ₂ ) _s5 -O-(CH ₂ ) _t5 -Si(R ⁵³ ) ₂ -(CH ₂ ) _u5 -Si(R ⁵³ ) ₂ -(C _v H _2v )-

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

am.

In the above formula, -(C _v H _2v )- may be straight chain or branched chain, for example, -CH ₂ CH ₂ -, -CH ₂ CH ₂ CH ₂ -, -CH(CH ₃ )-, - It may be CH(CH ₃ )CH ₂ -.

_{Each of the} ^above It may be substituted. In one aspect, X ^A is unsubstituted.

In addition, the above X ^A is bonded to R ^F1 or R ^F2 on the left side of each formula, and bonded to R ^Si on the right side.

In one aspect, X ^A may each independently be other than -OC _1-6 alkylene group.

In another aspect, examples of X ^A include the following groups:

[Wherein, R ⁴¹ is 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;

D is,

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CF ₂ O(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

-CON(Ph)-(CH ₂ ) ₃ - (wherein Ph means phenyl), and

(In the formula, R ⁴² each independently represents a hydrogen atom, a C _1-6 alkyl group, or a C _1-6 alkoxy group, preferably a methyl group or a methoxy group, more preferably a methyl group)

It is a group selected from,

E is -(CH ₂ ) _n -(n is an integer from 2 to 6),

D is bonded to R ^F1 or R ^F2 of the main chain of the molecule, and E is bonded to R ^Si .]

Specific examples of the above X ^A include, for example:

single bond,

-CH ₂ OCH ₂ -,

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CH ₂ O(CH ₂ ) ₄ -,

-CH ₂ O(CH ₂ ) ₅ -,

-CH ₂ O(CH ₂ ) ₆ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₃ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₁₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF(CF ₃ )CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -C(O)NH-CH ₂ -,

-CH ₂ OCH ₂ (CH ₂ ) ₇ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₃ -,

-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₂ CH ₃ ) ₂ OSi(OCH ₂ CH ₃ ) ₂ (CH ₂ ) ₃ -,

-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₂ CH ₃ ) ₂ OSi(OCH ₂ CH ₃ ) ₂ (CH ₂ ) ₂ -,

-(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -,

-CH ₂ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-(CH ₂ ) ₅ -,

-(CH ₂ ) ₆ -,

-CO-,

-CONH-,

-CONH-CH ₂ -,

-CONH-(CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₄ -,

-CONH-(CH ₂ ) ₅ -,

-CONH-(CH ₂ ) ₆ -,

-CON(CH ₃ )-CH ₂ -,

-CON(CH ₃ )-(CH ₂ ) ₂ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₄ -,

-CON(CH ₃ )-(CH ₂ ) ₅ -,

-CON(CH ₃ )-(CH ₂ ) ₆ -,

-CON(Ph)-CH ₂ - (wherein Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₂ -(wherein Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₃ -(wherein Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₄ -(wherein Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₅ -(wherein Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₆ - (wherein Ph means phenyl),

-CONH-(CH ₂ ) ₂ NH(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₆ NH(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₆ -,

-S-(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ S(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₃ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₁₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-C(O)O-(CH ₂ ) ₃ -,

-C(O)O-(CH ₂ ) ₆ -,

-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -,

-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -CH(CH ₃ )-,

-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₃ -,

-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -CH(CH ₃ )-CH ₂ -,

-OCH _2- ,

-O(CH ₂ ) ₃ -,

-OCFHCF _2- ,

etc. can be mentioned.

In another embodiment, X ^A is each independently a group represented by the formula: -(R ¹⁶ ) _x1 -(CFR ¹⁷ ) _y1 -(CH ₂ ) _z1 -. In the formula, x1, y1 and z1 are each independently an integer of 0 to 10, the sum of x1, y1 and z1 is 1 or more, and the order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula.

In the above formula, R ¹⁶ at each occurrence is independently an oxygen atom, phenylene, carbazolilene, -NR ¹⁸ - (wherein R ¹⁸ represents a hydrogen atom or an organic group), or a divalent oil. It is a device. Preferably, R ¹⁸ is an oxygen atom or a divalent polar group.

The "divalent polar group" is not particularly limited, but includes -C(O)-, -C(=NR ¹⁹ )-, and -C(O)NR ¹⁹ - (in these formulas, R ¹⁹ is a hydrogen atom) or represents a lower alkyl group). The “lower alkyl group” is, for example, an alkyl group having 1 to 6 carbon atoms, such as methyl, ethyl, or n-propyl, and these may be substituted by one or more fluorine atoms.

In the above formula, each occurrence of R ¹⁷ independently represents a hydrogen atom, a fluorine atom, or a lower fluoroalkyl group, and is preferably a fluorine atom. The “lower fluoroalkyl group” is, for example, a fluoroalkyl group having 1 to 6 carbon atoms, preferably a fluoroalkyl group having 1 to 3 carbon atoms, a perfluoroalkyl group preferably having 1 to 3 carbon atoms, more preferably a trifluoromethyl group. , a pentafluoroethyl group, more preferably a trifluoromethyl group.

In another aspect, examples of X ^A include the following groups:

[During the ceremony,

R ⁴¹ is 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;

^{For each ​}

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CF ₂ O(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

-CON(Ph)-(CH ₂ ) ₃ -(wherein Ph means phenyl), or

[In the formula, R ⁴² each independently represents a hydrogen atom, a C _1-6 alkyl group, or a C _1-6 alkoxy group, preferably a methyl group or a methoxy group, more preferably a methyl group]

, and some of the other Ts are bonded to R ^Si of the molecular main chain, and when present, the remaining Ts are each independently a methyl group, a phenyl group, a C _1-6 alkoxy group, a radical capture group, or an ultraviolet absorber.

The radical capture group is not particularly limited as long as it can capture radicals generated by light irradiation, but examples include benzophenones, benzotriazoles, benzoic acid esters, phenyl salicylate, crotonic acids, malonic acid esters, or Residues of ganoacrylates, hindered amines, hindered phenols, or triazines may be mentioned.

The ultraviolet absorber is not particularly limited as long as it can absorb ultraviolet rays, but examples include benzotriazoles, hydroxybenzophenones, esters of substituted and unsubstituted benzoic acids or salicylic acid compounds, acrylates or alkoxycinnamates, Residues of oxamides, oxanilides, benzoxazinones, and benzoxazoles may be included.

In a preferred embodiment, preferred radical scavengers or ultraviolet absorbers include:

can be mentioned.

In this aspect, X ^A may each independently be a 3 to 10 valent organic group.

In another aspect, examples of X ^A include the following groups:

[Wherein, R ²⁵ , R ²⁶ and R ²⁷ are each independently a 2 to 6 valent organic group;

R ²⁵ is bonded to at least one R ^F1 , and R ²⁶ and R ²⁷ are each bonded to at least one R ^Si .]

In one embodiment, R ²⁵ is a single bond, C _1-20 alkylene group, C _3-20 cycloalkylene group, C _5-20 arylene group, -R ⁵⁷ -X ⁵⁸ -R ⁵⁹ -, -X ⁵⁸ - R ⁵⁹ -, or -R ⁵⁷ -X ⁵⁸ -. Above, R ⁵⁷ and R ⁵⁹ each independently represent a single bond, a C _1-20 alkylene group, a C _3-20 cycloalkylene group, or a C _5-20 arylene group. The X ⁵⁸ is -O-, -S-, -CO-, -O-CO-, or -COO-.

In one embodiment, R ²⁶ and R ²⁷ are each independently a hydrocarbon or a group having at least one atom selected from N, O and S in the end or main chain of a hydrocarbon, preferably C _1-6 Alkyl groups, -R ³⁶ -R ³⁷ -R ³⁶ -, -R ³⁶ -CHR ³⁸ ₂ -, and the like can be mentioned. Here, R ³⁶ each independently represents 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, and is preferably N or O. R ³⁸ is -R ⁴⁵ -R ⁴⁶ -R ⁴⁵ -, -R ⁴⁶ -R ⁴⁵ - or -R ⁴⁵ -R ⁴⁶ -. Here, R ⁴⁵ each independently represents an alkyl group having 1 to 6 carbon atoms. R ⁴⁶ is N, O or S, and is preferably O.

In this aspect, X ^A may each independently be a 3 to 10 valent organic group.

In another aspect, as an example ^of

[Wherein, X ^a is a single bond or a divalent organic group]

A group represented by can be mentioned.

Said X ^a is a single bond or a divalent linking group that is directly bonded to the isocyanuric ring. ^As A 10-membered alkylene group or a divalent hydrocarbon group having 1 to 10 carbon atoms containing at least one bond selected from the group consisting of an ether bond, an ester bond, an amide bond, and a sulfide bond is more preferable.

For X ^a , the following equation:

_- ^{( CX 121} _​ ^{​ ​} _​

⁽ In ^{the formula} , _X ¹²¹ to Im), and

The 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 bonded to ^{CX 121}

x1 is an integer from 0 to 10, y1 is 0 or 1, z1 is an integer from 1 to 10)

A group represented by is more preferable.

As the above X ^a1 , -O- or -C(=O)O- is preferable.

As X ^a above, the following formula:

-(CF ₂ ) _m11 -(CH ₂ ) _m12 -O-(CH ₂ ) _m13 -

(Wherein, 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)

The group represented by

-(CF ₂ ) _m14 -(CH ₂ ) _m15 -O-CH ₂ CH(OH)-(CH ₂ ) _m16 -

(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)

The group represented by

-(CF ₂ ) _m17 -(CH ₂ ) _m18 -

(Wherein, m17 is an integer from 1 to 3, and m18 is an integer from 1 to 3)

The group represented by

-(CF ₂ ) _m19 -(CH ₂ ) _m20 -O-CH ₂ CH(OSi(OCH ₃ ) ₃ )-(CH ₂ ) _m21 -

(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)

A group represented by or,

-(CH ₂ ) _m22 -

(where m22 is an integer from 1 to 3)

The group represented by is particularly preferable.

As X ^a above, there is no particular limitation, but specifically,

-CH ₂ -, -C ₂ H ₄ -, -C ₃ H ₆ -, -C ₄ H ₈ -, -C ₄ H ₈ -O-CH ₂ -, -CO-O-CH ₂ -CH(OH) -CH ₂ -, -(CF ₂ ) _n5 -(n5 is an integer from 0 to 4), -(CF ₂ ) _n5 -(CH ₂ ) _m5 -(n5 and m5 are each independently an integer from 0 to 4) ), -CF ₂ CF ₂ CH ₂ OCH ₂ CH(OH)CH ₂ -, -CF ₂ CF ₂ CH ₂ OCH ₂ CH(OSi(OCH ₃ ) ₃ CH ₂ -

etc. can be mentioned.

In this aspect, X ^A may each independently be a divalent or trivalent organic group.

The fluoropolyether group-containing silane compound represented by the formula (1) or formula (2) is not particularly limited, but may have an average molecular weight of 5×10 ² to 1×10 ⁵ . Among these ranges, those having an average molecular weight of 2,000 to 32,000, more preferably 2,500 to 12,000, are preferable from the viewpoint of wear durability. In addition, this “average molecular weight” refers to the number average molecular weight, and the “average molecular weight” is a value measured by ¹⁹ F-NMR.

In one aspect, among the surface treatment agents of the present disclosure, the fluoropolyether group-containing silane compound is a compound represented by formula (1).

In another aspect, among the surface treatment agents of the present disclosure, the fluoropolyether group-containing silane compound is a compound represented by formula (2).

In another aspect, among the surface treatment agents of the present disclosure, the fluoropolyether group-containing silane compound is a compound represented by formula (1) and a compound represented by formula (2).

Among the surface treatment agents of the present disclosure, the compound represented by formula (2) is preferably 0.1 mol% or more and 35 mol% or less relative to the total of the compound represented by formula (1) and the compound represented by formula (2). am. The lower limit of the content of the compound represented by formula (2) relative to the total of the compound represented by formula (1) and the compound represented by formula (2) is preferably 0.1 mol%, more preferably 0.2 mol%, More preferably, it is 0.5 mol%, even more preferably 1 mol%, particularly preferably 2 mol%, and especially 5 mol%. The upper limit of the content of the compound represented by formula (2) relative to the total of the compound represented by formula (1) and the compound represented by formula (2) is preferably 35 mol%, more preferably 30 mol%, More preferably, it may be 20 mol%, and even more preferably 15 mol% or 10 mol%. The compound represented by formula (2) relative to the total of the compound represented by formula (1) and the compound represented by formula (2) is preferably 0.1 mol% or more and 30 mol% or less, more preferably 0.1 mol%. 20 mol% or less, more preferably 0.2 mol% or more and 10 mol% or less, even more preferably 0.5 mol% or more and 10 mol% or less, particularly preferably 1 mol% or more and 10 mol% or less, for example 2 It is mol% or more and 10 mol% or less, or 5 mol% or more and 10 mol% or less. By setting the compound represented by formula (2) within this range, wear durability can be further improved.

In one aspect, the surface treatment agent of the present disclosure contains two or more types of fluoropolyether group-containing silane compounds represented by formula (1) or (2). By including a plurality of fluoropolyether group-containing silane compounds, friction durability can be further improved.

In one aspect, the surface treatment agent of the present disclosure is one in which R ^Si is a group selected from formulas (S1), (S2), (S3), (S4), and (S5), and is a different group, two or more formulas. It includes a fluoropolyether group-containing silane compound represented by (1) or (2). By including a silane compound containing a fluoropolyether group having different R ^Si , friction durability can be further improved.

In one aspect, the surface treatment agent of the present disclosure is a fluoropolyether group-containing silane compound represented by formula (1) or (2) where R ^Si is a group represented by formula (S1) and R ^Si is a group represented by formula (S3) ), a group selected from (S4) and (S5), and a silane compound containing a fluoropolyether group represented by formula (1) or (2). A silane compound containing a fluoropolyether group represented by formula (1) or (2) where R ^Si is a group represented by formula (S1), and R ^Si is selected from formulas (S3), (S4) and (S5) Friction durability can be further improved by using together a silane compound containing a fluoropolyether group represented by formula (1) or (2).

In one aspect, the surface treatment agent of the present disclosure is a fluoropolyether group-containing silane compound represented by formula (1) or (2) where R ^Si is a group represented by formula (S1), and R ^Si is a group represented by formula ( It includes a group selected from (S3) and (S4), and a silane compound containing a fluoropolyether group represented by formula (1) or (2). R ^Si is a group represented by formula (S1), a fluoropolyether group-containing silane compound represented by formula (1) or (2), and R ^Si is a group selected from formulas (S3) and (S4), formula By using together the fluoropolyether group-containing silane compound represented by (1) or (2), friction durability can be further improved.

In one aspect, the surface treatment agent of the present disclosure is a fluoropolyether group-containing silane compound represented by formula (1) or (2) where R ^Si is a group represented by formula (S1), and R ^Si is a group represented by formula ( It includes a group represented by S3) and a silane compound containing a fluoropolyether group represented by formula (1) or (2). A fluoropolyether group-containing silane compound represented by formula (1) or (2) where R ^Si is a group represented by formula (S1), and formula (1) or (2) where R ^Si is a group represented by formula (S3) By using together a silane compound containing a fluoropolyether group represented by ), friction durability can be further improved.

In one aspect, the surface treatment agent of the present disclosure is a fluoropolyether group-containing silane compound represented by formula (1) or (2) where R ^Si is a group represented by formula (S1), and R ^Si is a group represented by formula ( It includes a group represented by S4) and a silane compound containing a fluoropolyether group represented by formula (1) or (2). A silane compound containing a fluoropolyether group represented by formula (1) or (2) where R ^Si is a group represented by formula (S1), and formula (1) or (2) where R ^Si is a group represented by formula (S4) By using together a silane compound containing a fluoropolyether group represented by ), friction durability can be further improved.

The compound represented by the formula (1) or (2) may be prepared by methods known per se, for example, International Publication No. 97/07155, Japanese Patent Publication No. 2008-534696, Japanese Patent Publication No. 2014-218639. It can be obtained by the method described in Japanese Patent Laid-Open No. 2017-82194, etc.

The content of the compound represented by the formula (1) or (2) is preferably 0.01 to 50.0% by mass, more preferably 0.1 to 30.0% by mass, and still more preferably 1.0 to 25.0% by mass, based on the total surface treatment agent. %, particularly preferably 5.0 to 20.0 mass %. By setting the content of the fluoropolyether group-containing silane compound within the above range, higher water and oil repellency can be obtained.

(lower fluoroalkyl alcohol)

The lower fluoroalkyl alcohol is a compound that can improve the wear durability of the surface treatment layer formed with the surface treatment agent of the present disclosure.

The lower fluoroalkyl alcohol preferably has a pKa of 15.0 or less, more preferably 13.0 or less, and even more preferably 12.5 or less. By having this pKa, it is possible to form a surface treatment layer with superior friction durability.

The lower fluoroalkyl alcohol preferably has a pKa of 5.0 or more, more preferably 7.0 or more, even more preferably 8.0 or more, and even more preferably 9.0 or more. By having such a pKa, the storage stability of the surface treatment agent is improved.

The lower fluoroalkyl alcohol preferably has a pKa of 5.0 to 15.0, more preferably 7.0 to 13.0, and even more preferably 9.0 to 13.0. By having such a pKa, a surface treatment layer with more excellent friction durability can be formed, and the storage stability of the surface treatment agent is improved.

The lower fluoroalkyl alcohol is preferably a monohydric alcohol.

The lower fluoroalkyl alcohol preferably has the following formula:

CRf ⁴ _n4 H _{3 -n4} -OH

[Formula:

Rf ⁴ is a perfluoroalkyl group having 1 to 3 carbon atoms,

n4 is an integer from 1 to 3]

It is a fluoroalkyl alcohol represented by .

In a preferred embodiment, the lower fluoroalkyl alcohol is a fluoroalkyl alcohol having 1 to 6 carbon atoms, preferably 2 to 6 carbon atoms, more preferably 2 to 4 carbon atoms, and particularly preferably 3 carbon atoms.

In a preferred embodiment, the lower fluoroalkyl alcohol has the following formula:

CRf ⁴ _n4 H _{3 -n4} -OH

[Formula:

Rf ⁴ is a perfluoroalkyl group having 1 to 3 carbon atoms,

n4 is an integer from 1 to 3,

The total number of carbon atoms is 2 to 6, preferably 2 to 4, and more preferably 3.]

It is a fluoroalkyl alcohol represented by .

In a particularly preferred embodiment, the lower fluoroalkyl alcohol is hexafluoropropanol or hexafluoroisopropanol.

The content of the lower fluoroalkyl alcohol is 30 parts by mass or less, preferably 25 parts by mass or less, more preferably 20 parts by mass or less, for example, 15 parts by mass or less, based on 100 parts by mass of the fluoropolyether group-containing silane compound. It may be less than or equal to 10 parts by mass. In addition, the content of lower fluoroalkyl alcohol is preferably 0.01 part by mass or more, more preferably 0.1 part by mass or more, and still more preferably 1.0 part by mass, based on 100 parts by mass of the fluoropolyether group-containing silane compound. It may be more than 3.0 parts by mass, more preferably more than 3.0 parts by mass, and especially preferably more than 10 parts by mass. The surface treatment agent of the present disclosure can form a surface treatment layer with higher friction durability by containing this amount of lower fluoroalkyl alcohol.

In a preferred embodiment, the content of lower fluoroalkyl alcohol is 0.01 to 30 parts by mass, more preferably 0.1 to 20 parts by mass, and still more preferably 3.0 parts by mass, based on 100 parts by mass of the fluoropolyether group-containing silane compound. It may be from 20 parts by mass, more preferably from 10 to 20 parts by mass.

The content of the lower fluoroalkyl alcohol is 0.5 to 10.0% by mass based on the entire surface treatment agent. The surface treatment agent of the present disclosure can form a surface treatment layer with high wear durability by including the amide compound in the above content.

The surface treatment agent of the present disclosure provides water and oil repellency to the surface treatment layer by containing the fluoropolyether group-containing silane compound, and provides high wear durability to the surface treatment layer by containing the lower fluoroalkyl alcohol. do.

The surface treatment agent of the present disclosure is a solvent, a (non-reactive) fluoropolyether compound that can be understood as a fluorine-containing oil, preferably a perfluoro(poly)ether compound (hereinafter collectively referred to as “fluorine-containing oil”) ), (non-reactive) silicone compounds that can be understood as silicone oil (hereinafter referred to as “silicone oil”), alcohols, compatibilizers, catalysts, surfactants, polymerization inhibitors, sensitizers, etc. there is.

Examples of the solvent include aliphatic hydrocarbons such as hexane, cyclohexane, heptane, octane, nonane, decane, undecane, dodecane, and mineral spirits; Aromatic hydrocarbons such as benzene, toluene, xylene, naphthalene, and solvent naphtha; Methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, isopropyl acetate, isobutyl acetate, cellosolve acetate, propylene glycol methyl ether acetate, carbitol acetate, diethyl oxalate, ethyl pyruvate, ethyl-2- Ester such as hydroxybutyrate, ethyl acetoacetate, amyl acetate, methyl lactate, ethyl lactate, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 2-hydroxyisobutyrate, and ethyl 2-hydroxyisobutyrate. ; Ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, 2-hexanone, cyclohexanone, methyl amino ketone, and 2-heptanone; Ethyl cellosolve, methyl cellosolve, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate, propylene glycol mono. Glycol ethers such as ethyl ether acetate, propylene glycol monobutyl ether acetate, dipropylene glycol dimethyl ether, and ethylene glycol monoalkyl ether; Alcohols such as methanol, ethanol, iso-propanol, n-butanol, isobutanol, tert-butanol, sec-butanol, 3-pentanol, octyl alcohol, 3-methyl-3-methoxybutanol, and tert-amyl alcohol; Glycols such as ethylene glycol and propylene glycol; Cyclic ethers such as tetrahydrofuran, tetrahydropyran, and dioxane; Amides such as N,N-dimethylformamide and N,N-dimethylacetamide; ether alcohols such as methyl cellosolve, cellosolve, isopropyl cellosolve, butyl cellosolve, and diethylene glycol monomethyl ether; diethylene glycol monoethyl ether acetate; 1,1,2-trichloro-1,2,2-trifluoroethane, 1,2-dichloro-1,1,2,2-tetrafluoroethane, dimethyl sulfoxide, 1,1-dichloro-1 , 2,2,3,3-pentafluoropropane (HCFC225), and fluorine-containing solvents such as Zeorora H, HFE7100, HFE7200, and HFE7300. Or a mixed solvent of two or more of these types can be mentioned.

The fluorine-containing oil is not particularly limited, but examples include compounds represented by the following general formula (3) (perfluoro(poly)ether compounds).

Rf ⁵ -(OC ₄ F ₈ ) _a' -(OC ₃ F ₆ ) _b' -(OC ₂ F ₄ ) _c' -(OCF ₂ ) _d' -Rf ⁶ … (3)

In the formula, Rf ⁵ represents an alkyl group having 1 to 16 carbon atoms (preferably a C _1-16 perfluoroalkyl group) which may be substituted with one or more fluorine atoms, and Rf ⁶ represents one or Represents an alkyl group with 1 to 16 carbon atoms (preferably a C _1-16 perfluoroalkyl group) that may be substituted with more fluorine atoms, a fluorine atom or a hydrogen atom, and Rf ⁵ and Rf ⁶ are more preferably: Each independently, is a C _1-3 perfluoroalkyl group.

a', b', c', and d' each represent the number of four types of repeating units of perfluoro(poly)ether constituting the main skeleton of the polymer, and are independently integers from 0 to 300, and a The sum of ', b', c' and d' is at least 1, preferably 1 to 300, more preferably 20 to 300. The order of existence of each repeating unit enclosed in parentheses with the subscript a', b', c', or d' is arbitrary in the formula. Among these repeating units, -(OC ₄ F ₈ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ )CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ ))-, -(OC(CF ₃ ) ₂ CF ₂ )-, -(OCF ₂ C(CF ₃ ) ₂ )-, -(OCF( CF ₃ )CF(CF ₃ ))-, -(OCF(C ₂ F ₅ )CF ₂ )- and (OCF ₂ CF(C ₂ F ₅ ))- may be any of them, but preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₃ F ₆ )- may be any of -(OCF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ )-, and (OCF ₂ CF(CF ₃ ))-, and is preferred. This is -(OCF ₂ CF ₂ CF ₂ )-. -(OCF ₂ F ₄ )- may be either -(OCF ₂ CF ₂ )- or (OCF(CF ₃ ))-, but is preferably -(OCF ₂ CF ₂ )-.

As an example of the perfluoro(poly)ether compound represented by the general formula (3), a compound (single type or a mixture of two or more types may be used) represented by any of the following general formulas (3a) and (3b) I can hear it.

Rf ⁵ -(OCF ₂ CF ₂ CF ₂ ) _b" -Rf ⁶ … (3a)

Rf ⁵ -(OCF ₂ CF ₂ CF ₂ CF ₂ ) _a" -(OCF ₂ CF ₂ CF ₂ ) _b" -(OCF ₂ CF ₂ ) _c" -(OCF ₂ ) _d" -Rf ⁶ ... (3b)

In these formulas, Rf ⁵ and Rf ⁶ are as defined above; In formula (3a), b" is an integer of 1 to 100; in formula (3b), a" and b" are each independently integers of 0 to 30, and c" and d" are each It is independently an integer between 1 and 300. The order of existence of each repeating unit enclosed in parentheses with the subscripts a", b", c", and d" is arbitrary in the formula.

Additionally, from another viewpoint, the fluorine-containing oil may be a compound represented by the general formula Rf ³ -F (wherein Rf ³ is a C _5-16 perfluoroalkyl group). Additionally, it may be a chlorotrifluoroethylene oligomer.

The fluorine-containing oil may have an average molecular weight of 500 to 10,000. The molecular weight of fluorine-containing oil can be measured using GPC.

The fluorine-containing oil may be contained in an amount of, for example, 0.01 to 50% by mass, preferably 0.1 to 30% by mass, for example, 1 to 15% by mass, relative to the surface treatment agent of the present disclosure.

In one aspect, the surface treatment agent of the present disclosure is substantially free of fluorine-containing oil. Substantially free from fluorine-containing oil means that it does not contain fluorine-containing oil at all, or may contain a trace amount of fluorine-containing oil.

In one aspect, the average molecular weight of the fluorine-containing oil may be larger than the average molecular weight of the silane compound containing a fluoropolyether group. By setting such an average molecular weight, better wear durability and surface slipperiness can be obtained, especially when forming a surface treatment layer by vacuum deposition.

In one aspect, the average molecular weight of the fluorine-containing oil may be smaller than the average molecular weight of the silane compound containing a fluoropolyether group. By setting such an average molecular weight, a cured product having high wear durability and high surface slipperiness can be formed while suppressing a decrease in transparency of the surface treatment layer obtained from such a compound.

The fluorine-containing oil contributes to improving the surface slipperiness of the layer formed by the surface treatment agent of the present disclosure.

As the 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 may be so-called straight silicone oil or modified silicone oil. Examples of straight silicone oil include dimethyl silicone oil, methylphenyl silicone oil, and methyl hydrogen silicone oil. Examples of modified silicone oil include straight silicone oil modified with alkyl, aralkyl, polyether, higher fatty acid ester, fluoroalkyl, amino, epoxy, carboxyl, alcohol, etc. Examples of cyclic silicone oil include cyclic dimethylsiloxane oil.

Among the surface treatment agents of the present disclosure, such silicone oil is, for example, 0 parts by mass relative to a total of 100 parts by mass (if two or more types, the total of these, the same applies hereinafter) of the fluoropolyether group-containing silane compound of the present disclosure. It may be included in an amount of 50 to 300 parts by mass, preferably 50 to 200 parts by mass.

Silicone oil contributes to improving the surface slipperiness of the surface treatment layer.

Examples of the alcohols include non-fluorine alcohols having 1 to 6 carbon atoms, such as methanol, ethanol, iso-propanol, and tert-butanol. By adding these alcohols to the surface treatment agent, the stability of the surface treatment agent is improved and the compatibility between the perfluoropolyether group-containing silane compound and the solvent is improved.

As the compatibilizer, 2,2,2-trifluoroethanol, 2,2,3,3,3-pentafluoro-1-propanol or 2,2,3,3,4,4,5,5- A fluorine-substituted alcohol such as octafluoro-1-pentanol, preferably a fluorine-substituted alcohol with a terminal CF ₂ H, a fluorine-substituted aryl such as 1,3-bis(trifluoromethyl)benzene, preferably a fluorine-substituted alcohol. Benzene, etc. can be mentioned.

Examples of the catalyst include acids (e.g. acetic acid, trifluoroacetic acid, etc.), bases (e.g. ammonia, triethylamine, diethylamine, etc.), transition metals (e.g. Ti, Ni, Sn, etc.), etc. I can hear it.

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

Other components other than the above include, for example, tetraethoxysilane, methyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and methyltriacetoxysilane. .

The surface treatment agent of the present disclosure can be made into pellets by impregnating a porous material, such as a porous ceramic material, a metal fiber, such as steel wool, hardened into a planar shape. The pellets can be used, for example, for vacuum deposition.

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

Hereinafter, the article of the present disclosure will be described.

The article of the present disclosure includes a substrate and a layer (surface treatment layer) formed on the surface of the substrate with the surface treatment agent of the present disclosure.

Substrates that can be used in the present disclosure include, for example, glass, resin (natural or synthetic resin, for example, may be a general plastic material), metal, ceramics, semiconductors (silicon, germanium, etc.), fibers (fabric, non-woven fabric, etc.) , fur, leather, wood, ceramics, stone, etc., building members, etc., sanitary products, and any suitable material.

For example, when the article to be manufactured is an optical member, the material constituting the surface of the base material may be a material for optical members, such as glass or transparent plastic. Additionally, when the article to be manufactured is an optical member, any layer (or film), such as a hard coat layer or an anti-reflection layer, may be formed on the surface (outermost layer) of the substrate. For the anti-reflection layer, either a single-layer anti-reflection layer or a multi-layer anti-reflection layer may be used. Examples of inorganic materials that can be used in the anti-reflection layer include SiO ₂ , SiO, ZrO ₂ , TiO ₂ , TiO, Ti ₂ O ₃ , Ti ₂ O ₅ , Al ₂ O ₃ , Ta ₂ O ₅ , Ta ₃ O ₅ , Nb ₂ O ₅ , HfO ₂ , Si ₃ N ₄ , CeO ₂ , MgO, Y ₂ O ₃ , SnO ₂ , MgF ₂ , WO ₃ , etc. These inorganic substances may be used individually or in combination of two or more types thereof (for example, as a mixture). When using a multilayer anti-reflection layer, it is preferable to use SiO ₂ and/or SiO as the outermost layer. When the article to be manufactured is an optical glass component for a touch panel, a thin film using a transparent electrode, for example, indium tin oxide (ITO) or indium zinc oxide, may be formed on part of the surface of the base material (glass). . In addition, the base material has an insulating layer, an adhesive layer, a protective layer, a decorative frame layer (I-CON), an atomized film layer, a hard coating film layer, a polarizing film, a higher order film, a liquid crystal display module, etc., depending on its specific specifications, etc. You can stay.

The shape of the substrate is not particularly limited, and may be, for example, plate-shaped, film, or other forms. In addition, the surface area of the substrate on which the surface treatment layer is to be formed may be at least a portion of the surface of the substrate, and can be appropriately determined depending on the purpose and specific specifications of the article to be manufactured.

In one aspect, such a substrate may have at least its surface portion made of a material that originally has hydroxyl groups. Examples of such materials include glass, and also include metals (particularly non-metals), ceramics, and semiconductors on which a natural oxide film or thermal oxidation film is formed on the surface. Alternatively, in cases where the presence of hydroxyl groups is not sufficient, such as in resins, or when the base material does not originally have hydroxyl groups, hydroxyl groups can be introduced or increased on the surface of the base material by subjecting the base material to some kind of pretreatment. Examples of such pretreatment include plasma treatment (for example, corona discharge) and ion beam irradiation. Plasma treatment can introduce or increase hydroxyl groups on the surface of a substrate, and can also be suitably used to clean the surface of the substrate (remove foreign substances, etc.). In addition, as another example of such pretreatment, an interfacial adsorbent having a carbon-carbon unsaturated bonding group is formed in the form of a monomolecular film on the surface of the substrate in advance by LB method (Langmuir-Blodget method) or chemical adsorption method, and then oxygen or nitrogen is added to the surface of the substrate. and a method of cleaving an unsaturated bond in an atmosphere containing such.

In another aspect, such a substrate may have at least a surface portion made of a material containing a silicone compound or alkoxysilane having one or more other reactive groups, for example, Si-H groups.

In a preferred embodiment, the substrate is glass. Preferred examples of such glass include sapphire glass, soda-lime glass, alkali aluminosilicate glass, borosilicate glass, alkali-free glass, crystal glass, and quartz glass, as well as chemically strengthened soda-lime glass, chemically strengthened alkali aluminosilicate glass, and chemically bonded glass. Borosilicate glass is particularly preferred.

The article of the present disclosure can be manufactured by forming a layer of the surface treatment agent of the present disclosure on the surface of the substrate, post-treating this layer as necessary, and thereby forming a layer of the surface treatment agent of the present disclosure. there is.

Layer formation of the surface treatment agent of the present disclosure can be performed by applying the surface treatment agent to the surface of the substrate so as to cover the surface. The coating method is not particularly limited. For example, wet coating and dry coating methods can be used.

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

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

Additionally, coating using an atmospheric pressure plasma method is also possible.

When using a wet coating method, the surface treatment agent of the present disclosure can be diluted with a solvent and then applied to the substrate surface. In view of the stability of the composition of the present disclosure and the volatility of the solvent, the following solvents are preferably used: perfluoro aliphatic hydrocarbons having 5 to 12 carbon atoms (e.g., perfluorohexane, perfluoromethylcyclohexane and perfluoro-1,3-dimethylcyclohexane); polyfluoro aromatic hydrocarbons (e.g., bis(trifluoromethyl)benzene); Polyfluoro aliphatic hydrocarbons (e.g., C ₆ F ₁₃ CH ₂ CH ₃ (e.g., Asahi Clean (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.); hydrofluoroether (HFE) (e.g., perfluoropropylmethyl ether (C ₃ F ₇ OCH ₃ ) (e.g., Novec (trademark) 7000 manufactured by Sumitomo 3M Co., Ltd.), perfluorobutylmethyl ether (C ₄ F ₉ OCH ₃ ) (e.g., Sumitomo 3M Co., Ltd.) Novec (trademark) 7100, manufactured by Kaisha Co., Ltd.), perfluorobutyl ethyl ether (C ₄ F ₉ OC ₂ H ₅ ) (e.g., Novec (trademark) 7200, manufactured by Sumitomo 3M Co., Ltd.), perfluorohexylmethyl. Alkylperfluoroalkyl ethers such as ether (C ₂ F ₅ CF(OCH ₃ )C ₃ F ₇ ) (for example, Novec (trademark) 7300 manufactured by Sumitomo 3M Co., Ltd.) (the perfluoroalkyl group and the alkyl group are may be linear or branched), or CF ₃ CH ₂ OCF ₂ CHF ₂ (for example, Asahi Clean (registered trademark) AE-3000 manufactured by Asahi Glass Co., Ltd.), etc. These solvents are used alone, Alternatively, it can be used as a mixture of two or more types. Among them, hydrofluoroether is preferable, and perfluorobutyl methyl ether (C ₄ F ₉ OCH ₃ ) and/or perfluorobutyl ethyl ether (C ₄ F ₉ OC ₂ H ₅ ) is particularly preferred.

When using the dry coating method, the surface treatment agent of the present disclosure may be subjected to the dry coating method as is, or may be diluted with the above-mentioned solvent and then subjected to the dry coating method.

The layer formation of the surface treatment agent is preferably performed so that the surface treatment agent of the present disclosure is present together with a catalyst for hydrolysis and dehydration condensation in the layer. Conveniently, in the case of using a wet coating method, the catalyst may be added to the diluted solution of the surface treatment agent of the present disclosure immediately before application to the surface of the substrate after diluting the surface treatment agent of the present disclosure with a solvent. In the case of a dry coating method, the surface treatment agent of the present disclosure to which a catalyst has been added is deposited as is (usually vacuum deposition), or a metal porous body such as iron or copper is impregnated with the surface treatment agent of the present disclosure to which a catalyst has been added. Pellets Vapor deposition (usually vacuum deposition) may be performed using the phase material.

As the catalyst, any suitable acid or base can be used. As the acid catalyst, for example, acetic acid, formic acid, trifluoroacetic acid, etc. can be used. Additionally, as a base catalyst, for example, ammonia, organic amines, etc. can be used.

The surface treatment layer included in the article of the present disclosure has both high wear durability. In addition to high abrasion durability, the surface treatment layer has water-repellency, oil-repellent properties, anti-fouling properties (prevents the adhesion of contaminants such as fingerprints), and waterproofing properties (e.g., prevents adhesion of contaminants such as fingerprints), depending on the composition of the surface treatment agent used. It can have surface slipperiness (or lubricity, such as wiping away contaminants such as fingerprints or excellent feel to fingers), chemical resistance, etc., and can be suitably used as a functional thin film. You can.

Accordingly, the present disclosure also relates to an optical material having the surface treatment layer as the outermost layer.

As optical materials, in addition to optical materials for displays and the like as exemplified later, a wide variety of optical materials are preferably used: for example, cathode ray tubes (CRTs; e.g., computer monitors), liquid crystal displays, and plasma displays. , displays such as organic EL displays, inorganic thin film EL dot matrix displays, rear projection displays, fluorescent displays (VFDs), field emission displays (FEDs), or protective plates for these displays, or anti-reflective films on their surfaces. processing was carried out.

The article of the present disclosure is not particularly limited, but may be an optical member. Examples of optical members include: lenses such as glasses; Front protection plates, anti-reflection plates, polarizers, and anti-glare plates for displays such as PDP and LCD; Touch panel sheets for devices such as mobile phones and mobile information terminals; Disc surfaces of optical discs such as Blu-ray (registered trademark) discs, DVD discs, CD-Rs, and MOs; optical fiber; Watch display, etc.

Additionally, the article of the present disclosure may be a medical device or medical material.

The thickness of the layer is not particularly limited. In the case of an optical member, the thickness of the layer is preferably in the range of 1 to 50 nm, 1 to 30 nm, and preferably 1 to 15 nm from the viewpoint of optical performance, wear durability and anti-fouling properties.

Above, the article of the present disclosure has been described in detail. In addition, the article and method for manufacturing the article of the present disclosure are not limited to those exemplified above.

Example

Hereinafter, the article of the present disclosure will be described in terms of examples, but the present disclosure is not limited to the following examples. In addition, in this example, the order of existence of the repeating units constituting the fluoropolyether is arbitrary, and the chemical formula shown below represents the average composition.

As a silane compound containing a fluoropolyether group, the following compound was prepared.

Compound (A):

(m≒21, n≒35)

(In addition, the average composition included 0.27 repeating units of (CF ₂ CF ₂ CF ₂ CF ₂ O) and 0.42 repeating units of (CF ₂ CF ₂ CF ₂ O), but they were omitted because they were in trace amounts. In addition, 3.2% of a compound having -C (CH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₃ ) at both ends was included, but it was omitted because it was a trace amount.)

Compound (B);

(m≒26, n≒24)

(In addition, the average composition included 1.32 repeating units of (CF ₂ CF ₂ CF ₂ CF ₂ O) and 0.70 repeating units of (CF ₂ CF ₂ CF ₂ O), but they were omitted because they were in trace amounts. In addition, 8.0% of a compound having -N(CH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₃ ) ₂ at both ends was contained, but it was omitted because it was a trace amount.)

Compound (C):

(n≒20, t=1 to 6, average is about 3)

Compound (D):

(m≒22, n≒21)

(Preparation of diluent)

As a diluent (X) for the fluoropolyether group-containing silane compound, the compounds (A), (B), (C), and (D) are each diluted with hydrofluoroether so that the concentration is 20% by mass. It was dissolved in (Novec HFE-7200, manufactured by 3M) to prepare diluents (X1), (X2), (X3), and (X4).

As an alcohol diluent (Y), pentafluoropropanol, hexafluoroisopropanol, ethanol, and isopropanol were each dissolved in hydrofluoroether (Novec HFE-7200, manufactured by 3M) to a concentration of 20% by mass, Dilutions (Y1), (Y2), (Y3) and (Y4) were prepared.

As a diluent (X) for the fluoropolyether group-containing silane compound, the compounds (A), (B), (C), and (D) are each diluted with hydrofluoroether so that the concentration is 0.1% by mass. It was dissolved in (Novec HFE-7200, manufactured by 3M) to prepare diluents (X5), (X6), (X7), and (X8).

As an alcohol diluent (Y), pentafluoropropanol, hexafluoroisopropanol, ethanol, and isopropanol were each dissolved in hydrofluoroether (Novec HFE-7200, manufactured by 3M) to a concentration of 0.1% by mass, Dilutions (Y5), (Y6), (Y7), and (Y8) were prepared.

(Preparation of surface treatment agent 1)

The diluent (X) and the diluent (Y) were mixed in the ratios shown in Table 1 below to prepare surface treatment agents 1 to 9. Surface treatment agents 1 to 5 are examples, and surface treatment agents 6 to 9 are comparative examples.

(Formation of surface treatment layer)

The surface treatment agents 1 to 9 prepared above were each vacuum-deposited on chemically strengthened glass (“Gorilla” glass manufactured by Corning, thickness 0.7 mm). The conditions for the vacuum evaporation method were a resistance heating type evaporator (made by Synchron), a chamber size of 1,900 mmϕ, a vacuum degree of 5.0E-05, a current value of 240 A, a voltage of 10 V, and a substrate temperature of 40°C. Next, the vapor-deposited chemically strengthened glass was left to stand in an atmosphere at a temperature of 150°C for 30 minutes, and then allowed to cool to room temperature to form a surface treatment layer on the glass substrate.

(Evaluation of characteristics of surface treatment layer)

The properties of the obtained surface treatment layer were evaluated as follows. The results are shown in Table 2 below.

<Static contact angle>

(Initial Evaluation)

As an initial evaluation, after forming the surface treatment layer, the static contact angle of water was measured while nothing was yet in contact with the surface.

(SW wear resistance test)

SW: (Bornstar Steel Wool, #0000)

Ground area: 10mm

Travel distance (one way): 60mm

Movement speed: 60 cycles/min

Load: 1kgf

(Preparation of surface treatment agent 2)

The diluent (X) and the diluent (Y) were mixed in the ratios shown in Table 3 below to prepare surface treatment agents 10 to 16. Surface treatment agents 10 to 12 are examples, and surface treatment agents 13 to 16 are comparative examples.

(Formation of surface treatment layer 2)

After plasma cleaning the base glass until the water contact angle was 10° or less, the diluent was applied on the glass at a coating rate of 48 g/m2 using a two-fluid nozzle. After application, aging treatment was performed at 150°C for 30 minutes to form a surface treatment layer.

(Evaluation of characteristics of surface treatment layer)

The properties of the obtained surface treatment layer were evaluated in the same manner as above. The results are shown in Table 4 below.

The article of the present disclosure can be suitably used for a variety of purposes, for example, as an optical member such as a touch panel.

Claims (27)

A surface treatment agent containing a fluoropolyether group-containing silane compound and a lower fluoroalkyl alcohol, wherein the content of the lower fluoroalkyl alcohol is 30 parts by mass or less with respect to 100 parts by mass of the fluoropolyether group-containing silane compound. , surface treatment agent. According to paragraph 1,
The fluoropolyether group-containing silane compound has the following formula (1) or (2):

[Formula:
R ^F1 is, at each occurrence, independently Rf ¹ -R ^F -O _q -;
R ^F2 is -Rf ² _p -R ^F -O _q -;
Rf ¹ is, at each occurrence, independently a C _1-16 alkyl group which may be substituted with one or more fluorine atoms;
Rf ² is a C _1-6 alkylene group which may be substituted with one or more fluorine atoms;
R ^F each independently represents a divalent fluoropolyether group;
p is 0 or 1;
q is independently 0 or 1 for each occurrence;
R ^Si is, at each occurrence, independently a monovalent group containing a Si atom to which a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent organic group is bonded;
At least one R ^Si is a monovalent group containing a Si atom to which a hydroxyl group or a hydrolyzable group is bonded;
X ^A each independently represents a single bond or a 2- to 10-valent organic group;
α is an integer from 1 to 9;
β is an integer from 1 to 9;
γ is each independently an integer from 1 to 9]
A surface treatment agent, which is a silane compound containing at least one fluoropolyether group represented by . According to paragraph 2,
Each occurrence of Rf ¹ is independently a C _1-16 perfluoroalkyl group,
A surface treatment agent in which Rf ² is independently a C _1-6 perfluoroalkylene group in each occurrence. According to paragraph 2 or 3,
R ^F is independently for each occurrence, in the equation:
-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ R ^Fa ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -
[In the formula, R ^Fa is independently a hydrogen atom, a fluorine atom, or a chlorine atom in each occurrence,
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, and a, b, c, d, The order of existence of each repeating unit enclosed in parentheses by adding e or f is arbitrary in the formula, provided that when all R ^Fa is a hydrogen atom or a chlorine atom, at least one of a, b, c, e and f is, [is more than 1]
The surface treatment agent indicated by . According to paragraph 4,
R ^Fa is a surface treatment agent that is a fluorine atom. According to paragraph 2 or 3,
R ^F is, at each occurrence, independently of the following formula (f1), (f2), (f3), (f4), (f5) or (f6):
-(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1)
[Wherein, d is an integer from 1 to 200, and e is 0 or 1],
-(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f2)
[Wherein, c and d are each independently an integer of 0 to 30;
e and f are each independently an integer from 1 to 200;
The sum of c, d, e and f is an integer from 10 to 200;
The order of existence of each repeating unit enclosed in parentheses with the subscript c, d, e or f is arbitrary in the formula],
-(R ⁶ -R ⁷ ) _g - (f3)
[Wherein, R ⁶ is OCF ₂ or OC ₂ F ₄ ;
R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or a combination of 2 or 3 groups selected from these groups;
g is an integer from 2 to 100],
-(R ⁶ -R ⁷ ) _g -R ^r -(R ^7' -R ^6' ) _g' - (f4)
[Wherein, R ⁶ is OCF ₂ or OC ₂ F ₄ ;
R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or a combination of 2 or 3 groups independently selected from these groups and
R ^6' is OCF ₂ or OC ₂ F ₄ ,
R ^7' is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or two or three groups independently selected from these groups. It is a combination,
g is an integer from 2 to 100,
g' is an integer from 2 to 100,
R ^r is,

(In the formula, * indicates the binding position)
lim] ;
-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f5)
[In the formula, e is an integer from 1 to 200, and a, b, c, d, and f are each independently integers from 0 to 200, and a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the equation]
-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f6)
[In the formula, f is an integer from 1 to 200, and a, b, c, d, and e are each independently integers from 0 to 200, and a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the equation]
The surface treatment agent indicated by . According to any one of claims 2 to 6,
R ^Si has the following formula (S1), (S2), (S3), (S4) or (S5):

[Formula:
R ¹¹ is independently a hydroxyl group or a hydrolyzable group in each occurrence;
Each occurrence of R ¹² independently represents a hydrogen atom or a monovalent organic group;
n1 is an integer of 0 to 3, each independently for each (SiR ¹¹ _n1 R ¹² _{3 -n1} ) unit;
Each occurrence of X ¹¹ independently represents a single bond or a divalent organic group;
Each occurrence of R ¹³ independently represents a hydrogen atom or a monovalent organic group;
t is an integer of 2 or more independently for each occurrence;
R ¹⁴ , at each occurrence, is independently a hydrogen atom, a halogen atom, or -X ¹¹ -SiR ¹¹ _n1 R ¹² _3-n1 ;
R ¹⁵ in each occurrence is independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms;
R ^a1 , in each occurrence, is independently -Z ¹ -SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ;
Z ¹ is independently an oxygen atom or a divalent organic group in each occurrence;
R ²¹ is independently -Z ^1' -SiR ^21' _p1' R ^22' _q1' R ^23' _{r1 '} in each occurrence;
R ²² in each occurrence is independently a hydroxyl group or a hydrolyzable group;
Each occurrence of R ²³ independently represents a hydrogen atom or a monovalent organic group;
p1 is, independently, an integer from 0 to 3 in each occurrence;
q1 is independently an integer from 0 to 3 in each occurrence;
r1 is, independently, an integer from 0 to 3 in each occurrence;
The sum of p1, q1, and r1 is 3 for the SiR ²¹ _p1 R ²² _q1 R ²³ _r1 unit;
Z ^1' , in each occurrence, is independently an oxygen atom or a divalent organic group;
R ^21' , in each occurrence, is independently -Z ^1" -SiR ^22" _q1" R ^23" _{r1 "} ;
R ^22' , in each occurrence, is independently a hydroxyl group or a hydrolyzable group;
R ^23' in each occurrence is independently a hydrogen atom or a monovalent organic group;
p1' is, at each occurrence, independently an integer from 0 to 3;
q1' is independently an integer from 0 to 3 in each occurrence;
r1' is independently an integer from 0 to 3 in each occurrence;
The sum of p1', q1', and r1' is 3 for the SiR ^21' _p1' R ^22' _q1' R ^23' _{r1 '} unit;
Z ^1" , in each occurrence, is independently an oxygen atom or a divalent organic group;
R ^{22 "} in each occurrence is independently a hydroxyl group or a hydrolyzable group;
R ^{23 "} in each occurrence is independently a hydrogen atom or a monovalent organic group;
q1" is, in each occurrence, independently an integer from 0 to 3;
r1" is, in each occurrence, independently an integer from 0 to 3;
The sum of q1" and r1" is 3 in the SiR ^22" _q1" R ^23" _{r1 "} unit;
Each occurrence of R ^b1 is independently a hydroxyl group or a hydrolyzable group;
R ^c1 is, at each occurrence, independently a hydrogen atom or a monovalent organic group;
k1 is, independently, an integer from 0 to 3 in each occurrence;
l1 is an integer from 0 to 3, independently for each occurrence;
m1 is, independently, an integer from 0 to 3 in each occurrence;
The sum of k1, l1 and m1 is 3 in SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 units;
R ^d1 is, independently at each occurrence, -Z ² -CR ³¹ _p2 R ³² _q2 R ³³ _r2 ;
Each occurrence of Z ² is independently a single bond, an oxygen atom, or a divalent organic group;
R ³¹ is independently -Z ^2' -CR ^32' _q2' R ^33' _{r2 '} in each occurrence;
R ³² is independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _{3 -n2} in each occurrence;
R ³³ each independently represents a hydrogen atom, a hydroxyl group, or a monovalent organic group;
p2 is, independently, an integer from 0 to 3 in each occurrence;
q2 is, at each occurrence, independently an integer from 0 to 3;
r2 is, each occurrence independently, an integer from 0 to 3;
The sum of p2, q2, and r2 is 3 for the SiR ³¹ _p2 R ³² _q2 R ³³ _r2 unit;
Z ^2' , at each occurrence, is independently a single bond, an oxygen atom, or a divalent organic group;
R ^32' , in each occurrence, is independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _{3 -n2} ;
R ^33' in each occurrence is independently a hydrogen atom, a hydroxyl group, or a monovalent organic group;
q2' is independently an integer from 0 to 3 in each occurrence;
r2' is independently an integer from 0 to 3 in each occurrence;
The sum of q2' and r2' is 3 for the SiR ^32' _q2' R ^33' _{r2 '} unit;
Z ³ in each occurrence is independently a single bond, an oxygen atom, or a divalent organic group;
Each occurrence of R ³⁴ independently represents a hydroxyl group or a hydrolyzable group;
R ³⁵ each independently represents a hydrogen atom or a monovalent organic group;
n2 is independently an integer from 0 to 3 in each occurrence;
R ^e1 is independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _{3 -n2} in each occurrence;
R ^f1 , in each occurrence, is independently a hydrogen atom, a hydroxyl group, or a monovalent organic group;
k2 is independently an integer from 0 to 3 in each occurrence;
l2 is independently an integer from 0 to 3 in each occurrence;
m2 is, independently, an integer from 0 to 3 in each occurrence;
The sum of k2, l2 and m2 is 3 in CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 units;
R ^g1 and R ^h1 are each independently in each occurrence, -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 ;
Each occurrence of Z ⁴ independently represents a single bond, an oxygen atom, or a divalent organic group;
However, in formulas (S1), (S2), (S3), (S4) and (S5), there is at least one Si atom to which a hydroxyl group or hydrolyzable group is bonded]
The surface treatment agent indicated by . According to any one of claims 2 to 7,
α, β and γ are 1, surface treatment agent. According to clause 7 or 8,
R ^Si is a surface treatment agent having the formula (S3), (S4) or (S5). According to any one of claims 7 to 9,
R ^Si is a surface treatment agent of formula (S3). In clause 7,
A surface treatment agent comprising a fluoropolyether group-containing silane compound where R ^Si is the formula (S1), and a fluoropolyether group-containing silane compound where R ^Si is the formula (S3), (S4), or (S5). In clause 7,
A surface treatment agent comprising a fluoropolyether group-containing silane compound where R ^Si is the formula (S1), and a fluoropolyether group-containing silane compound where R ^Si is the formula (S3). In clause 7,
A surface treatment agent comprising a fluoropolyether group-containing silane compound where R ^Si is the formula (S1), and a fluoropolyether group-containing silane compound where R ^Si is the formula (S4). According to any one of claims 1 to 13,
A surface treatment agent wherein the content of the lower fluoroalkyl alcohol is 0.1 to 20 parts by mass based on 100 parts by mass of the fluoropolyether group-containing silane compound. According to any one of claims 1 to 14,
A surface treatment agent wherein the content of the lower fluoroalkyl alcohol is 3.0 to 20 parts by mass based on 100 parts by mass of the fluoropolyether group-containing silane compound. According to any one of claims 1 to 15,
The surface treatment agent wherein the lower fluoroalkyl alcohol is a fluoroalkyl alcohol with a pKa of 15.0 or less. According to any one of claims 1 to 16,
The surface treatment agent wherein the lower fluoroalkyl alcohol is a fluoroalkyl alcohol with a pKa of 5.0 to 15.0. According to any one of claims 1 to 17,
The lower fluoroalkyl alcohol has the following formula:
CRf ⁴ _n4 H _{3 -n4} -OH
[Formula:
Rf ⁴ is a perfluoroalkyl group having 1 to 3 carbon atoms,
n4 is an integer from 1 to 3]
A surface treatment agent that is a fluoroalkyl alcohol represented by . According to any one of claims 1 to 18,
The surface treatment agent wherein the lower fluoroalkyl alcohol is a fluoroalkyl alcohol having 1 to 6 carbon atoms. According to any one of claims 1 to 19,
The surface treatment agent wherein the lower fluoroalkyl alcohol is hexafluoropropanol or hexafluoroisopropanol. According to any one of claims 1 to 20,
A surface treatment agent further containing one or more other components selected from fluorine-containing oil, silicone oil, and catalyst. According to any one of claims 1 to 21,
A surface treatment agent further comprising a solvent. According to any one of claims 1 to 22,
A surface treatment agent used as an antifouling or waterproof coating. A pellet containing the surface treatment agent according to any one of claims 1 to 23. An article comprising a substrate and a layer formed on the substrate with the surface treatment agent according to any one of claims 1 to 23. According to clause 24,
The article is an article wherein the substrate is a glass substrate. According to clause 25,
Optical material, article.