TW202239814A - Composition containing fluoropolyether group-containing silane compound - Google Patents

Abstract

The composition of the present invention includes a fluoropolyether group-containing silane compound represented by formula (A1) or (A2) and a fluoroalkyl group-containing silane compound having a group represented by formula (B) with molecular weight of 300 to 500. The ratio of the mole number of the fluoroalkyl group-containing silane compound to the mole number of the fluoropolyether group-containing silane compound is 0.001 to 1.5. The symbols are as described in the specification. -SiR31n3R323-n3 (B).

Description

Composition containing silane compound having fluoropolyether group

The present invention relates to a composition comprising a silane compound having a fluoropolyether group.

It is known that a fluorine-containing silane compound can provide excellent water repellency, oil repellency, and antifouling properties if used for surface treatment of substrates. A layer obtained from a composition (such as a surface treatment agent) containing a fluorine-containing silane compound (hereinafter also referred to as a "surface treatment layer") is applied as a so-called functional film to various types of glass, plastic, fiber, building materials, etc. on a variety of substrates.

As such a fluorine-containing compound, there is known a perfluoropolyether group-containing silane compound having a perfluoropolyether group in the main chain of the molecule and a hydrolyzable compound bonded to an Si atom at the molecular terminal or terminal portion. base (Patent Documents 1, 2).

[Prior Art Literature]

[Patent Document]

[Patent Document 1] Japanese National Publication No. 2008-534696

[Patent Document 2] International Publication No. 97/07155

For a composition including a composition having the above-mentioned silane compound, a surface treatment layer formed from the composition is required to have better friction durability.

The present disclosure provides the following [1] to [24].

[1]

A composition comprising a silane compound having a fluoropolyether group represented by the following formula (A1) or (A2), and a fluoroalkane compound having a group represented by the following formula (B) and having a molecular weight of 300 to 500 base silane compounds;

-SiR ³¹ _n3 R ³² _3-n3 (B)

The ratio of the number of moles of the aforementioned silane compound having a fluoroalkyl group to the number of moles of the aforementioned silane compound having a fluoropolyether group is 0.001 to 1.5; [wherein:

R ^F1 is Rf ¹ -R ^F -O _q -;

R ^F2 is -Rf ² _p -R ^F -O _q -;

Rf ¹ is a C _1-16 alkyl group that may be substituted by one or more fluorine atoms;

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

Each occurrence of R ^F is independently a basis represented by the following 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 -;

a, b, c, d, e and f are independently integers from 0 to 200, the sum of a, b, c, d, e and f is at least 1, and a, b, c, d, e or f and the presence order of each repeating unit enclosed in brackets in the formula is arbitrary;

Each occurrence of R ^Fa is independently a hydrogen atom, a fluorine atom or a chlorine atom;

p is 0 or 1;

q is independently 0 or 1;

Each occurrence of R ^Si is independently any one of the groups represented by the following formulas (S1) to (S2);

-SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 (S1)

-CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 (S2)

each occurrence of R ^a1 is independently -Z ¹ -SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ;

Each occurrence of Z ¹ is independently an oxygen atom or a divalent organic group;

Each occurrence of R ⁴¹ is independently -Z ^1' -SiR ^41' _r1' R ^42' _r2' R ^43' _r3' ;

Each occurrence of Z ^1' is independently an oxygen atom or a divalent organic group;

each occurrence of R ^41' is independently -Z ^1" -SiR ^41" _r1" R ^42" _r2" ;

Each occurrence of Z ^1" is independently an oxygen atom or a divalent organic group;

R ^41" is independently at each occurrence a hydroxyl group or a hydrolyzable group;

Each occurrence of R ^42" is independently a hydrogen atom or a monovalent organic group;

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

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

R ^42' is independently at each occurrence a hydroxyl group or a hydrolyzable group;

Each occurrence of R ^43' is independently a hydrogen atom or a monovalent organic group;

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

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

r3' is independently an integer from 0 to 3 each time it occurs;

R ⁴² is independently at each occurrence a hydroxyl group or a hydrolyzable group;

Each occurrence of ^R43 is independently a hydrogen atom or a monovalent organic group;

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

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

r3 is independently an integer from 0 to 3 at each occurrence;

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

Each occurrence of R ^c1 is independently a hydrogen atom or a monovalent organic group;

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

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

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

However, in formula (S1), there is at least one Si atom bonded to a hydroxyl group or a hydrolyzable group;

R ^d1 is independently at each occurrence -Z ² -CR ⁵¹ _s1 R ⁵² _s2 R ⁵³ _s3 ;

Each occurrence of ^Z2 is independently a single bond, an oxygen atom or a divalent organic group;

R ⁵¹ is independently at each occurrence -Z ^2' -CR ^51' _s1' R ^52' _s2' ;

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

R ^51' is independently at each occurrence -Z ³ -SiR ^51" _m1" R ^52" _3-m1" ;

Each occurrence ^of Z3 is independently a single bond, an oxygen atom or a divalent organic group;

R ^51" is independently at each occurrence a hydroxyl group or a hydrolyzable group;

R ^52" is independently a hydrogen atom or a monovalent organic group at each occurrence;

m1" is independently at each occurrence an integer from 0 to 3;

Each occurrence of R ^52' is independently a hydrogen atom, a hydroxyl group or a monovalent organic group;

s1' is independently an integer from 0 to 3 each time it occurs;

s2' is independently an integer from 0 to 3 each time it occurs;

R ⁵² is independently at each occurrence -Z ³ -SiR ^51" _m1" R ^52" _3-m1" ;

Each occurrence of ^R53 is independently a hydrogen atom, a hydroxyl group or a monovalent organic group;

s1 is independently an integer from 0 to 3 at each occurrence;

s2 is independently an integer from 0 to 3 at each occurrence;

s3 is independently an integer from 0 to 3 at each occurrence;

R ^e1 is independently at each occurrence -Z ³ -SiR ^51" _m1" R ^52" _3-m1" ;

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

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

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

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

However, in formula (S2), there is at least one -SiR ^51" _m1" R ^52" _3-m1" in which m1" is 1 to 3;

Each occurrence of R ⁿ is independently a group represented by -X ¹ -R ^Si , a hydrogen atom, a phenyl group or a C _1-6 alkyl group;

Each occurrence of X1 is independently ^a single bond or a divalent organic group;

R independently ^at each occurrence is hydroxyl or a hydrolyzable group;

Each occurrence of ^R32 is independently a hydrogen atom or a monovalent organic group;

n3 is independently an integer from 0 to 3 each time it occurs;

However, in the aforementioned silane compounds having a fluoroalkyl group, at least one n3 is 1 or more].

[2]

The composition as described in [1], wherein,

Each occurrence of R ^F is independently represented by the following formula (f1), (f2), (f3), (f4) or (f5):

-(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, and e and f are each independently an integer of 1 to 200,

The sum of c, d, e and f is 2 or more,

The order of the repeating units marked with c, d, e or f and enclosed in brackets in the formula is arbitrary];

-(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 ,

g is an integer from 2 to 100];

-(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 - (f4)

[wherein, e is an integer ranging from 1 to 200, a, b, c, d, and f are each independently an integer ranging from 0 to 200, and the sum of a, b, c, d, e, and f is at least 1, Also, the order of the repeating units marked a, b, c, d, e or f and enclosed in brackets in the formula is arbitrary];

-(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)

[wherein, f is an integer of 1 to 200, a, b, c, d, and e are each independently an integer of 0 to 200, and the sum of a, b, c, d, e, and f is at least 1, Also, the presence order of each repeating unit in the formula marked with a, b, c, d, e or f and enclosed in brackets is arbitrary].

[3]

The composition as described in [1] or [2], wherein each occurrence of X ¹ is independently a group represented by -(R ²¹ ) _p1 -(X ^a ) _q1 -;

[where:

R ²¹ is a single bond, -(CH ₂ ) _p2 - which may be substituted by one or more fluorine atoms, or an o-, m-, or p-phenylene group,

p2 is an integer from 1 to 20,

X ^a represents -(X ^b ) _q2 -,

Each occurrence of X ^b is independently selected from -O-, -S-, o-, m-, or p-phenylene, -(OR ³⁵ ) _n4 -, -C(O)O-, -Si(R ³³ ) ₂ -, -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -, -CON(R ³⁴ )-, -O-CON(R ³⁴ )-, -N(R ³⁴ ) - and -(CH ₂ ) _n' - the radical in the group formed,

R ³³ is independently phenyl, C _1-6 alkyl or C _1-6 alkoxy at each occurrence,

R ³⁴ is independently a hydrogen atom, a phenyl group or a C _1-6 alkyl group at each occurrence,

R ³⁵ is independently C _1-6 alkylene at each occurrence,

n4 is independently an integer from 1 to 5 at each occurrence,

m' is independently at each occurrence an integer from 1 to 100,

n' is independently at each occurrence an integer from 1 to 20,

q2 is an integer from 1 to 10,

p1 is 0 or 1,

q1 is 0 or 1,

Here, the presence order of each repeating unit marked with p1 or q1 and enclosed in brackets is arbitrary].

[4]

The composition as described in any one of [1] to [3], wherein Z ¹ and Z ³ are independently C _1-6 alkylene at each occurrence.

[5]

The composition according to any one of [1] to [4], wherein k1 is 2 or 3, and r2 is 2 or 3.

[6]

The composition according to any one of [1] to [4], wherein k1 is 0, and l1 is 2 or 3.

[7]

The composition according to any one of [1] to [4], wherein l2 is 2 or 3, and m1" is 2 or 3.

[8]

The composition according to any one of [1] to [4], wherein l2 is 2 and m2 is 1.

[9]

The composition according to any one of [1] to [8], wherein R ⁿ is a hydrogen atom, a phenyl group or a C _1-6 alkyl group.

[10]

The composition according to any one of [1] to [8], wherein R ⁿ is represented by -X ¹ -R ^Si .

[11]

The composition as described in [10], wherein R ⁿ is represented by -X ¹ -R ^Si , R ^Si in formula (A1) or (A2) is represented by formula (S1), and k1 is 0.

[12]

The composition according to any one of [1] to [10], wherein R ^Si is represented by formula (S1).

[13]

The composition according to any one of [1] to [10], wherein R ^Si is represented by formula (S2).

[14]

The composition as described in any one of [1] to [13], wherein the aforementioned silane compound having a fluoroalkyl group is represented by formula (B1):

Rf ³ -X ³¹ -SiR ³¹ _n3 R ³² _3-n3 (B1)

Rf ³ is a C _1-6 alkyl group that may be substituted by one or more fluorine atoms;

^X31 is a single bond, an oxygen atom or a divalent organic group;

R ³¹ are each independently a hydroxyl group or a hydrolyzable group;

^R32 are each independently a hydrogen atom or a monovalent organic group;

n3 is an integer of 1 to 3.

[15]

The composition as described in [14], wherein Rf ³ is C _1-6 perfluoroalkyl.

[16]

The composition as described in [14] or [15], wherein,

X ³¹ is represented by -(X ³¹¹ ) _z11 -(Z ³¹ ) _z12 -,

X ³¹¹ is a C _1-6 alkylene group that may be substituted by one or more fluorine atoms,

Z ³¹ are each independently an oxygen atom or a sulfur atom,

z11 is an integer from 1 to 3,

z12 is an integer from 0 to 2,

However, the order of existence of the repeating units enclosed in brackets is arbitrary in ^X31 .

[17]

The composition according to any one of [1] to [16], wherein n3 is 3.

[18]

The composition according to any one of [1] to [17], further comprising a fluorine-containing oil.

[19]

The composition as described in [18], wherein the fluorine-containing oil is represented by the following formula,

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

Rf ⁵ and Rf ⁶ are each independently an alkyl group having 1 to 16 carbon atoms which may be substituted by one or more fluorine atoms,

a' and b' are each independently an integer of 0 to 30, c' and d' are each independently an integer of 1 to 200, and the sum of a', b', c' and d' is at least 5 or more, The presence order of each repeating unit marked with a', b', c' or d' and enclosed in brackets in the formula is arbitrary.

[20]

The composition according to any one of [1] to [19], comprising a silane compound having a fluoropolyether group represented by formula (A1) and a silane compound having a fluoropolyether group represented by formula (A2) Compounds as silane compounds with fluoropolyether groups,

And more with fluorine oil.

[twenty one]

The composition according to any one of [1] to [20], which does not contain an oligomer of a compound selected from the group consisting of the aforementioned fluoroalkyl-containing silane compounds.

[twenty two]

A surface treatment agent comprising the composition according to any one of [1] to [21].

[twenty three]

The surface treatment agent as described in [22], which is used for wet coating.

[twenty four]

An article, which has: a substrate, and formed on the surface by the composition as described in any one of [1] to [21] or the surface treatment agent as described in any one of [22] to [23] layer on the surface of the substrate.

The present disclosure provides a surface treatment agent, which helps to form a surface treatment layer with better friction durability.

When used in this specification, a "hydrocarbon group" means a group containing carbon and hydrogen, which is a group obtained by detaching one hydrogen atom from a hydrocarbon. The hydrocarbon group is not particularly limited, and examples thereof include hydrocarbon groups having 1 to 20 carbon atoms that may be substituted with one or more substituents, such as aliphatic hydrocarbon groups, aromatic hydrocarbon groups, and the like. The aforementioned "aliphatic hydrocarbon group" may be any of linear, branched or cyclic, and may be either saturated or unsaturated. Also, the hydrocarbon group may have one or more ring structures. In addition, the hydrocarbon group may have one or more N, O, S, Si, amide, sulfonyl, siloxane, carbonyl, carbonyloxy, etc. at its terminal or in the molecular chain.

When used in this specification, the substituent of "hydrocarbyl" is not particularly limited, for example: a halogen atom; one selected from C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 cycloalkyl, C _3-10 unsaturated cycloalkyl, 5 to 10 membered heterocyclic group, 5 to 10 membered unsaturated heterocyclic group, C _6-10 aromatic One or more groups among 5- to 10-membered heteroaryl groups.

When used in this specification, "organic group" refers to a carbon-containing group. The organic group is not particularly limited, and may be a hydrocarbon group. Also, the "2- to 10-valent organic group" means a carbon-containing 2- to 10-valent group. This 2-10 valent organic group is not specifically limited, The 2-10 valent group which further detached 1-9 hydrogen atoms from a hydrocarbon group is mentioned. For example, the divalent organic group is not particularly limited, and a divalent group in which one hydrogen atom is detached from the hydrocarbon group is further exemplified.

In this specification, the so-called "hydrolyzable group" when used in this specification refers to a group that can accept a hydrolysis reaction, that is, a group that can be separated from the main skeleton of a compound by a hydrolysis reaction. Examples of hydrolyzable groups include: -OR ^h1 , -OCOR ^h1 , -ON=CR ^h1 ₂ , -NR ^h1 ₂ , -NHR ^h1 , -NCO, halogen (in this equation, R ^h1 means substituted or an unsubstituted alkyl group having 1 to 4 carbon atoms), etc., preferably -OR ^h1 (that is, an alkoxy group). Examples of R ^h1 include: unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; substituted alkyl groups such as chloromethyl. Among them, an alkyl group is preferable, especially an unsubstituted alkyl group, and a methyl group or an ethyl group is more preferable. In one aspect, the hydrolyzable group is methoxy. In another aspect, the hydrolyzable group is ethoxy.

(composition)

The disclosed composition includes silane compounds with fluoropolyether groups and silane compounds with fluoroalkyl groups.

The silane compound with fluoropolyether group is represented by the following formula (A1) or (A2):

The silane compound having a fluoroalkyl group is a compound having a group represented by the following formula (B) and a molecular weight of 300 to 500:

-SiR ³¹ _n3 R ³² _3-n3 (B).

In the composition disclosed herein, the ratio of the molar number of the silane compound having a fluoroalkyl group to the molar number of the silane compound having a fluoropolyether group ([the molar number of the silane compound having a fluoroalkyl group]/[ The molar number of the silane compound having a fluoropolyether group]) is 0.001 to 1.5.

When micelles are formed in the composition for forming the surface treatment layer, the friction durability of the surface treatment layer may be reduced. In this regard, it is considered that the composition of the present disclosure can suppress the formation of micelles by the silane compound having a fluoropolyether group and improve the leveling of the composition by including the silane compound having a fluoroalkyl group in the above-mentioned amount. sex. As a result, it is thought that the surface of the formed surface treatment layer becomes flatter, and the fall of friction durability can be suppressed.

In addition, the so-called non-micelle formation means that when the average hydrodynamic diameter of a solute is measured by the dynamic light scattering method, there is no peak of scattering intensity in the average hydrodynamic diameter of 100 nm or more. Specifically, it means that there is no scattering intensity at an average hydrodynamic diameter of 100 nm or more.

In addition, the following sample was used for the measurement of the dynamic light scattering method: a solution containing 50% by mass of a silane compound having a fluoropolyether group and a silane compound having a fluoroalkyl group were mixed, and left to stand at a measurement temperature of 25 ℃. As a solvent, for example, HFE7200 can be used.

(silane compound with fluoropolyether group)

The silane compound having a fluoropolyether group is represented by the following formula (A1) or (A2).

In the above formula (A1), R ^F1 is Rf ¹ -R ^F -O _q -.

In the above formula (A2), R ^F2 is -Rf ² _p -R ^F -O _q -.

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

The "C _1-16 alkyl" in the above-mentioned C _1-16 alkyl that may be substituted by more than one fluorine atom may be a straight chain or a branched chain, preferably a straight or branched C _1-6 alkyl, especially C _1-3 alkyl, more preferably straight chain C _1-6 alkyl, especially C _1-3 alkyl.

The aforementioned 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 still more preferably a C _1-16 perfluoroalkyl group.

The above-mentioned C _1-16 perfluoroalkyl can be straight chain or branched chain, preferably straight or branched C _1-6 perfluoroalkyl, especially C _1-3 perfluoroalkyl , more preferably straight chain C _1-6 perfluoroalkyl, especially C _1-3 perfluoroalkyl, 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 which may be substituted by one or more fluorine atoms.

The "C _1-6 alkylene" in the above-mentioned C _1-6 alkylene that may be substituted by more than one fluorine atom may be a straight chain or a branched chain, preferably a straight chain or a branched chain C _1-3 alkylene, more preferably straight chain C _1-3 alkylene.

The above-mentioned 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 still more preferably a C _1-3 perfluoroalkylene group.

The above-mentioned C _1-6 perfluoroalkylene group can be straight chain or branched chain, preferably straight chain or branched C _1-3 perfluoroalkylene group, more preferably straight chain C _{1 -3} perfluoroalkylene, 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 state, p is 0. In another aspect, p is 1.

In the above formula, q is independently 0 or 1 each time it appears. In one form, q is 0. In another aspect, q is 1.

In the above formula, each occurrence of R ^F is independently a divalent fluoropolyether group. R ^F is independently represented by the following formula at each occurrence:

-(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 this specification, the group described as R ^F has a left side bonded to Rf ¹ or Rf ² and a right side bonded to O (when q is 0, it is C=O).

In the above formula, each occurrence of R ^Fa is independently a hydrogen atom, a fluorine atom or a chlorine atom, preferably a hydrogen atom or a fluorine atom, more preferably a fluorine atom.

In the above formula, a, b, c, d, e, and f are each independently an integer of 0 to 200, and the sum of a, b, c, d, e, and f is at least 1. Preferably, a, b, c, d, e, and f are each independently 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, for example, 10 or more and 100 or less. The presence order of each repeating unit marked a, b, c, d, e or f and enclosed in brackets in the formula is arbitrary.

These repeating units may be linear or branched, but are preferably linear. For example -(OC ₆ F ₁₂ )- can also be -(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., preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₅ F ₁₀ )- can be -(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., preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₄ F ₈ )- can be -(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 ))-, preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₃ F ₆ )- (that is, R ^Fa in the above formula is a fluorine atom) can be -(OCF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ )- and -(OCF ₂ Any of CF(CF ₃ ))-, preferably -(OCF ₂ CF ₂ CF ₂ )-. Also, -(OC ₂ F ₄ )- may be any of -(OCF ₂ CF ₂ )- and -(OCF(CF ₃ ))-, preferably -(OCF ₂ CF ₂ )-.

In one aspect, each occurrence of R ^F is independently represented by the following formula (f1), (f2), (f3), (f4) or (f5):

-(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, and e and f are each independently an integer of 1 to 200,

The sum of c, d, e and f is 2 or more,

The order of the repeating units marked c, d, e or f and enclosed in brackets in the formula is arbitrary]

-(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 ,

g is an integer from 2 to 100].

-(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 - (f4)

[wherein, e is an integer of 1 to 200, a, b, c, d and f are each independently an integer of 0 to 200, and the sum of a, b, c, d, e and f is at least 1, Also, the presence order of each repeating unit in the formula marked with a, b, c, d, e or f and enclosed in brackets is arbitrary].

-(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)

[wherein, f is an integer of 1 to 200, a, b, c, d and e are each independently an integer of 0 to 200, and the sum of a, b, c, d, e and f is at least 1, Also, the presence order of each repeating unit in the formula marked with a, b, c, d, e or f and enclosed in brackets is arbitrary].

In the above formula (f1), d is preferably from 5 to 200, more preferably from 10 to 100, even more preferably from 15 to 50, such as an integer of 25 to 35. (OC ₃ F ₆ ) in the above formula (f1) is preferably represented by (OCF ₂ CF ₂ CF ₂ ) or (OCF(CF ₃ )CF ₂ ), more preferably (OCF ₂ CF ₂ CF ₂ ) The base represented. (OC ₂ F ₄ ) in the above formula (f1) is preferably a group represented by (OCF ₂ CF ₂ ) or (OCF(CF ₃ )), more preferably a group represented by (OCF ₂ CF ₂ ) . In one form, e is 0. In another aspect, e is 1.

In the above formula (f2), e and f are each independently, preferably 5 to 200, more preferably an integer of 10 to 200. Also, 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 above formula (f2) is preferably represented by -(OCF ₂ CF ₂ CF ₂ CF ₂ ) _c -(OCF ₂ CF ₂ CF ₂ ) _d -(OCF ₂ CF ₂ ) _e -(OCF ₂ ) _f - the basis of the representation. In another aspect, formula (f2) may be a group represented by -(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, more Preferably, it is a group selected from OC ₃ F ₆ and OC ₄ F ₈ . The combination of 2 or 3 groups independently selected from OC ₂ F ₄ , OC ₃ F ₆ and OC ₄ F ₈ is not particularly limited, 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 -etc. In the above formula (f3), g is preferably an integer of 3 or more, more preferably 5 or more. The aforementioned 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 any of straight chain or branched chain, preferably straight chain. In this aspect, the above formula (f3) is preferably -(OC ₂ F ₄ -OC ₃ F ₆ ) _g - or -(OC ₂ F ₄ -OC ₄ F ₈ ) _g -.

In the above formula (f4), 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 (f5), 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, the aforementioned R ^F is a group represented by the aforementioned formula (f1).

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

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

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

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

In a preferred aspect, R ^F is a base represented by the following formula (f2):

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

In the formula, c and d are independently integers ranging from 0 to 30, e and f are independently integers ranging from 1 to 200, preferably ranging from 5 to 200, more preferably integers ranging from 10 to 200, and e or The order in which f and the repeating units enclosed in brackets in the formula is arbitrary. More specifically, R ^F is a group represented by -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -.

In 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, further preferably 0.2 to 1.5, and even more preferably 0.2 to 0.85. By making the e/f ratio 10 or less, the smoothness, friction durability and chemical resistance (such as durability against artificial sweat) of the hardened layer (such as surface treatment layer) obtained from the composition containing this compound are further improved . The smaller the e/f ratio, the more improved the smoothness and friction durability of the hardened 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 is, the more stable the silane compound with fluoropolyether group is. In this case, the value of f is 1 or more.

In one aspect, the above e/f ratio is preferably from 0.2 to 0.95, more preferably from 0.2 to 0.9.

In one aspect, the e/f ratio is less than 0.9, preferably less than 0.8, less than 0.7, and may be less than 0.65. The e/f ratio is, for example, 0.2 or more, 0.3 or more, 0.4 or more, 0.5 or more, and 0.55 or more. The e/f ratio is, for example, 0.2 or more and less than 0.9, specifically 0.4 or more and 0.8 or less, more specifically 0.5 or more and 0.8 or less. By having the above-mentioned e/f ratio, the composition (such as a surface treatment agent) of the present disclosure can form a surface treatment layer with better smoothness.

In one aspect, the e/f ratio may be 0.4 to 0.7, 0.5 to 0.7, 0.55 to 0.7, or 0.55 to 0.65.

In one aspect, from the viewpoint of heat resistance, the above-mentioned e/f ratio is preferably 1.0 or more, and more preferably 1.0 or more and 2.0 or less.

The number average molecular weight of the -R ^F - moiety is not particularly limited, and is, for example, 500 to 30,000, preferably 1,500 to 30,000, more preferably 2,000 to 10,000. The above number average molecular weight is a value measured by ¹⁹ F-NMR.

In another aspect, the number average molecular weight of the moiety ^-RF- 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 6,000.

In another aspect, the number average molecular weight of the moiety ^-RF- may be from 4,000 to 30,000, preferably from 5,000 to 10,000, more preferably from 6,000 to 10,000.

The above X ¹ can be understood as a connection between "the fluoropolyether part (R ^F1 and R ^F2 ) that mainly provides water repellency and surface smoothness" and "the part that provides the ability to bond with the substrate (R ^Si )" child (linker). Therefore, as long as the compounds represented by the formulas (A1) and (A2) can exist stably, the X ¹ may be a single bond or any group.

Preferably, each occurrence of X ¹ is independently a single bond or a divalent organic group. In addition, in the above-mentioned X ¹ , the left side of each formula of F is bonded to N, and the right side is bonded to R ^Si .

In one aspect, X ¹ is a single bond.

In one aspect, X ¹ is a divalent organic group.

In ^one aspect, X can include, for example, a single bond or a divalent organic group represented by the following formula:

-(R ²¹ ) _p1 -(X ^a ) _q1 -

R ²¹ is a single bond, -(CH ₂ ) _p2 - or o-, m-, or p-phenylene, preferably -(CH ₂ ) _p2 -,

p2 is an integer of 1 to 20, preferably an integer of 1 to 6, more preferably an integer of 1 to 3, more preferably 1 or 2,

X ^a represents (X ^b ) _q2 -,

Each occurrence of X ^b is independently selected from the group consisting of -O-, -S-, o-, m-, or p-phenylene, -(OR ³⁵ ) _n4 -, -C(O)O-, -Si(R ³³ ) ₂ -, -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -, -CONR ³⁴ -, -O-CONR ³⁴ -, -NR ³⁴ -and-(CH ₂ ) _n' - the basis in the group formed by,

Each ^occurrence of R independently represents phenyl, C _1-6 alkyl or C _1-6 alkoxy, preferably phenyl or C _1-6 alkyl, more preferably methyl,

R ³⁴ independently represent a hydrogen atom, a phenyl group or a C _1-6 alkyl group (preferably a methyl group) at each occurrence,

R ³⁵ is independently C _1-6 alkylene at each occurrence,

n4 is independently an integer from 1 to 5 at each occurrence,

m' is independently an integer from 1 to 100, preferably an integer from 1 to 20, each occurrence,

n' is independently an integer of 1 to 20 at each occurrence, preferably an integer of 1 to 6, more preferably an integer of 1 to 3,

q2 is an integer of 1 to 10, preferably an integer of 1 to 5, more preferably an integer of 1 to 3,

p1 is 0 or 1,

q1 is 0 or 1,

The order of presence of each repeating unit marked p1 or q1 and enclosed in parentheses is arbitrary.

Here, at least one of p1 and q1 is 1.

Here, X ¹ (typically, a hydrogen atom of X ¹ ) may be substituted with 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 aspect, X1 is not substituted by these groups.

In a preferred aspect, the aforementioned X ¹ are each independently -(R ²¹ ) _p1 -(X ^a ) _q1 -R ²² -.

R ²² represents a single bond, -(CH ₂ ) _p3 -, or o-, m-, or p-phenylene, preferably -(CH ₂ ) _p3 -. p3 is an integer of 1 to 20, preferably an integer of 2 to 6, more preferably an integer of 2 to 3. Here, R ²² (typically, a hydrogen atom of R ²² ) may be substituted with 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 aspect, R ²² is not substituted by these groups. R ²¹ , p1, X ^a , and q1 have the same definitions as above.

Preferably, the aforementioned X ¹ can be independently a single bond, a C _1-20 alkylene group, -R ²¹ -X ^a -R ²² - or -X ^a1 -R ²² -

[wherein, R ²¹ and R ²² have the same meaning as above,

X ^a represents: -O-, -S-, -C(O)O-, -CONR ³⁴ -, -O-CONR ³⁴ -, -Si(R ³³ ) ₂ -, -(Si(R ³³ ) ₂ O ) _m' -Si(R ³³ ) ₂ -, -O-(CH ₂ ) _u5 -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -, -O-(CH ₂ ) _u5 - Si(R ³³ ) ₂ -O-Si(R ³³ ) ₂ -CH ₂ CH ₂ -Si(R ³³ ) ₂ -O-Si(R ³³ ) ₂ -, -O-(CH ₂ ) _u5 -Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ -, -CONR ³⁴ -(CH ₂ ) _u5 -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -, -CONR ³⁴ -(CH ₂ ) _u5 -N(R ³⁴ )-or-CONR ³⁴ -(o-, m-, or p-phenylene)-Si(R ³³ ) ₂ -

(wherein, R ³³ , R ³⁴ and m' have the same meaning as above,

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

X ^a1 means: -S-, -C(O)O- or -O-CONR ³⁴ -

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

In one aspect, X ¹ are each independently a single bond or a C _1-6 alkylene group, preferably a C _1-6 alkylene group, more preferably a C _1-3 alkylene group, such as methylene.

The above-mentioned X ¹ can be independently replaced by one or more substituents selected from fluorine atoms, C _1-3 alkyl groups and C _1-3 fluoroalkyl groups (preferably C _1-3 perfluoroalkyl groups). replace. In one aspect, X ¹ is unsubstituted.

Specific examples of X ¹ include, for example, a 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 DHFCF ₂ OCF ₂ CF ₂ CF ₂ -, -CH ₂ OCH ₂ CHFCF ₂ OCF(C F 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-, -S-(CH ₂ ) ₃ -, -(CH ₂ ) ₂ S(CH ₂ ) ₃ -, -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 -,

等。

Wait.

In the above formula, each occurrence of R ^Si is independently any one of the groups represented by the following (S1) to (S2).

-SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 (S1)

-CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 (S2)

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

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

In formula (S1),

Each occurrence of the above R ^a1 is independently -Z ¹ -SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 .

The above-mentioned Z ¹ is independently an oxygen atom or a divalent organic group at each occurrence. In addition, in the structure described below as Z ¹ , the right side is bonded to (SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ).

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

In a preferred aspect, Z ¹ does not include one that forms a siloxane bond with the Si atom to which Z ¹ is bonded. That is, in formula (S1), (Si-Z ¹ -Si) does not contain a siloxane bond.

The above-mentioned Z ¹ is preferably a C _1-6 alkylene group, -(CH ₂ ) _z1 -O-(CH ₂ ) _z2 - (wherein, z1 is an integer from 0 to 6, such as an integer from 1 to 6, and z2 is an integer of 0 to 6, such as an integer of 1 to 6) or -(CH ₂ ) _z3 -phenylene group-(CH ₂ ) _z4 -(wherein, z3 is an integer of 0 to 6, such as an integer of 1 to 6, z4 is an integer from 0 to 6, such as an integer from 1 to 6). The C _1-6 alkylene group may be a straight chain or a branched chain, but is preferably a straight chain. These groups, for example, may be substituted by one or more substituents selected from fluorine atom, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, but preferably is not replaced.

In a preferred aspect, Z ¹ is C _1-6 alkylene or -(CH ₂ ) _z3 -phenylene-(CH ₂ ) _z4 -, preferably -phenylene-(CH ₂ ) _z4 - . When ^Z1 is the basis, light resistance, especially ultraviolet resistance becomes higher.

In another preferred aspect, Z ¹ is C _1-6 alkylene, preferably C _1-3 alkylene. In one aspect, Z ¹ may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ¹ can be -CH ₂ CH ₂ -.

Each occurrence of the above R ⁴¹ is independently -Z ^1' -SiR ^41' _r1' R ^42' _r2' R ^43' _r3' .

Each occurrence of the aforementioned Z ^1' is independently an oxygen atom or a divalent organic group. In addition, in the structure described below as Z ^1' , the right side is bonded to (SiR ^41' _r1' R ^42' _r2' R ^43' _r3' ).

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

In a preferred aspect, Z ^1' does not include those that form siloxane bonds with Si atoms to which Z ^1' is bonded. That is, in formula (S1), (Si-Z ^1' -Si) does not contain a siloxane bond.

The above-mentioned Z ^1' is preferably a C _1-6 alkylene group, -(CH ₂ ) _z1' -O-(CH ₂ ) _z2' - (wherein, z1' is an integer from 0 to 6, for example, from 1 to 6 Integer, z2' is an integer from 0 to 6, such as an integer from 1 to 6) or -(CH ₂ ) _z3' -phenylene-(CH ₂ ) _z4' -(wherein, z3' is an integer from 0 to 6 , such as an integer from 1 to 6, z4' is an integer from 0 to 6, such as an integer from 1 to 6). The C _1-6 alkylene group may be a straight chain or a branched chain, but is preferably a straight chain. These groups, for example, may be substituted with 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 Not replaced.

In a preferred aspect, Z ^1' is C _1-6 alkylene or -(CH ₂ ) _z3' -phenylene-(CH ₂ ) _z4'- , preferably -phenylene-(CH ₂ ) _z4'- . When Z ^1' is the basis, light resistance, especially ultraviolet resistance becomes higher.

In another preferred aspect, the aforementioned Z ^1' is a C _1-6 alkylene group, preferably 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-mentioned R ^41' is independently -Z ^1" -SiR ^41" _r1" R ^42" _r2" at each occurrence.

The above-mentioned Z ^1" is independently an oxygen atom or a divalent organic group each time it appears.

Each occurrence of Z ^1" is independently an oxygen atom or a divalent organic group. In addition, in the structure described below as Z ^1" , the right side is bonded to (SiR ^41" _r1" R ^42" _r2" ).

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

In a preferred aspect, Z ^1" does not include Si atoms bonded to Z ^1" to form siloxane bonds. That is, in the formula (S1), (Si-Z ^1" -Si) does not contain a siloxane bond.

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

In a preferred aspect, Z ^1" is C _1-6 alkylene or -(CH ₂ ) _z3" -phenylene-(CH ₂ ) _z4" -, preferably -phenylene-(CH ₂ ) _z4” -. When Z ^1" is the basis, the light resistance, especially the ultraviolet resistance becomes higher.

In another preferred aspect, the above-mentioned Z ^1" is a C _1-6 alkylene group, preferably a C _1-3 alkylene group. In one aspect, Z ^1" can be -CH ₂ CH ₂ CH ₂ - . In another aspect, Z ^1" can be -CH ₂ CH ₂ -.

The above-mentioned R ^{41 ″} is independently a hydroxyl group or a hydrolyzable group at each occurrence.

R ⁴¹ ″ is preferably independently a hydrolyzable group at each occurrence. The hydrolyzable group has the same meaning as above.

The above-mentioned R ^{42 ″} is independently a hydrogen atom or a monovalent organic group at each occurrence. The monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In the above R ^42" , 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 above-mentioned r1" is independently an integer of 0 to 3 at each occurrence; the above-mentioned r2" is an integer of 0 to 3 independently at each occurrence. In addition, in the (SiR ^41” _r1” R ^42” _r2” ) unit, the sum of r1” and r2” is 3.

r1" in each (SiR ^41" _r1" R ^42" _r2" ) unit is independently preferably an integer of 1 to 3, more preferably 2 to 3, and still more preferably 3.

The above-mentioned R ^42' is independently a hydroxyl group or a hydrolyzable group at each occurrence.

R ^42' is preferably independently at each occurrence a hydrolyzable group. The hydrolyzable group has the same meaning as above.

Each occurrence of the above R ^43' is independently a hydrogen atom or a monovalent organic group. The monovalent organic group is a monovalent organic group excluding the aforementioned hydrolyzable groups.

In the above R ^43' , 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 above-mentioned r1' is independently an integer from 0 to 3 at each occurrence; the above-mentioned r2' is an integer from 0 to 3 independently at each occurrence; the above-mentioned r3' is independently an integer from 0 to 3 at each occurrence; Integer of 3. In addition, in the (SiR ^41' _r1' R ^42' _r2' R ^43' _r3' ) unit, the total of r1', r2' and r3' is 3.

In one aspect, r1' is 0.

In one aspect, r1' in each (SiR ^41' _r1' R ^42' _r2' R ^43' _r3' ) unit is independently an integer of 1 to 3, may be an integer of 2 to 3, or may be 3. In a preferred aspect, r1' is 3.

In one aspect, r2' in each (SiR ^41' _r1' R ^42' _r2' R ^43' _r3' ) unit is independently an integer from 1 to 3, preferably an integer from 2 to 3, more preferably for 3.

In one aspect, in each (SiR ^41' _r1' R ^42' _r2' R ^43' _r3' ) unit, r1' is 0, r2' is an integer from 1 to 3, and r3' is 0 to 2 Integers, preferably r1' is 0, r2' is an integer from 2 to 3, r3' is an integer from 0 to 1, more preferably r2' is 3.

In one aspect, r2' is 0, and r3' is independently an integer from 1 to 3 in each (SiR ^41' _r1' R ^42' _r2' R ^43' _r3' ) unit, preferably 2 to 3 An integer of , preferably 3.

The above-mentioned R ⁴² is independently a hydroxyl group or a hydrolyzable group at each occurrence.

R ⁴² is preferably independently at each occurrence a hydrolyzable group. The hydrolyzable group has the same meaning as above.

Each occurrence of the above R ⁴³ is independently a hydrogen atom or a monovalent organic group. The monovalent organic group is a monovalent organic group excluding the aforementioned hydrolyzable groups.

In the above R ⁴³ , 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 above r1 is independently an integer from 0 to 3 each time it occurs; the above r2 is an integer from 0 to 3 each time it appears independently; the above r3 is an integer from 0 to 3 each time it appears independently . In addition, in the (SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ) unit, the total of r1, r2 and r3 is 3.

In one form, r1 is 0.

In one aspect, r1 is 0, r2 is an integer from 0 to 3, and r3 is an integer from 0 to 3.

In one aspect, r1 in each (SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ) unit is independently an integer of 1 to 3, may be an integer of 2 to 3, or may be 3. In a preferred aspect, r1 is 3.

In one aspect, each (SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ) unit is independent, r1 is an integer from 1 to 3, r2 is an integer from 0 to 2, and r3 is an integer from 0 to 2; the other In the aspect, r1 is 2 or 3, r2 is 0 or 1, and r3 is 0 or 1.

In one aspect, r2 in each (SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ) unit is independently an integer of 1 to 3, preferably an integer of 2 to 3, more preferably 3.

In one aspect, each (SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ) unit is independent, r1 is an integer from 0 to 2, r2 is an integer from 1 to 3, and r3 is an integer from 0 to 2; the other In one aspect, r1 is 0 or 1, r2 is 2 or 3, and r3 is 0 or 1; in another aspect, r2 is 3.

In one aspect, r1 is 0, and r2 is independently an integer of 1 to 3 in each (SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ) unit, preferably an integer of 2 to 3, and more preferably 3.

In one aspect, r1 is 0, r2 is an integer from 1 to 3, r3 is an integer from 0 to 2, preferably r1 is 0, r2 is 2 or 3, r3 is 0 or 1, more preferably r1 and r3 is 0 and r2 is 3.

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

The above-mentioned R ^b1 is preferably a hydrolyzable group independently at each occurrence. The hydrolyzable group has the same meaning as above.

In the above formula, each occurrence of R ^c1 is independently a hydrogen atom or a monovalent organic group. The monovalent organic group is a monovalent organic group excluding the aforementioned hydrolyzable groups.

In the above 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 above k1 is independently an integer of 0 to 3 at each occurrence; the above l1 is an integer of 0 to 3 independently at each occurrence; the above m1 is independently an integer of 0 to 3 at each occurrence . In addition, in the (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit, the total of k1, l1, and m1 is three.

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

In one aspect, each (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit is independent, k1 is an integer from 1 to 3, l1 is an integer from 0 to 2, and m1 is an integer from 0 to 2; the other In one aspect, k1 is 2 or 3, l1 is 0 or 1, and m1 is 0 or 1; in another aspect, k1 is 3.

In one aspect, k1 is 1 or 2, l1 is 2 or 1, and m1 is 0 in each (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit.

In one aspect, in each (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit, k1 is 1 or 2, l1 is 0, and m1 is 2 or 1, respectively.

In one aspect, k1 is 0. In other words, the group represented by -SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 is -SiR ^b1 _l1 R ^c1 _m1 , and the total of l1 and m1 is 3. However, in this aspect, at least one Si atom bonded to a hydroxyl group or a hydrolyzable group exists in the terminal part of formula (A1) and formula (A2).

The above l1 is preferably an integer from 1 to 3, more preferably 2 or 3, and even more preferably 3, independently at each occurrence.

In one aspect, k1 is 0, l1 is preferably 2 or 3, more preferably k1 is 0, l1 is 3.

In formula (S1), at least one Si atom bonded to a hydroxyl group or a hydrolyzable group exists. That is, the base represented by formula (S1) has any of the following: -SiR ^b1 _l1 R ^c1 _m1 (wherein, l1 is an integer from 1 to 3, preferably 2 or 3, more preferably 3, The total of l1 and m1 is 3), -SiR ⁴² _r2 R ⁴³ _r3 (wherein, r2 is an integer from 1 to 3, preferably 2 or 3, more preferably 3, the total of r2 and r3 is 3), -SiR ^{42 '} _r2' R ^43' _r3' (wherein, r2' is an integer from 1 to 3, preferably 2 or 3, more preferably 3, the total of r2' and r3' is 3), or -SiR ^41” _r1” R ^42" _r2" (wherein, r1" is an integer from 1 to 3, preferably 2 or 3, more preferably 3, the total of r1" and r2" is 3).

In a preferred aspect, when R ^Si is represented by (S1) in the terminal portion of formula (A1) and formula (A2), there are at least two Si atoms bonded to a hydroxyl group or a hydrolyzable group.

In a preferred aspect, when there is R ^a1 in formula (S1), in at least one, preferably all of R ^a1 , r2 is an integer from 1 to 3, preferably 2 or 3, more preferably 3 .

In a preferred aspect, when there is R ^a1 in formula (S1), in at least one, preferably all of R ^a1 , r1 is an integer from 0 to 2, r2 is an integer from 1 to 3, and r3 is 0 An integer of up to 2, preferably r1 is 0 or 1, r2 is 2 or 3, r3 is 0 or 1, more preferably r2 is 3.

In a preferred aspect, when there is R ⁴¹ in formula (S1), in at least one, preferably all R ⁴¹ , r2' is an integer from 1 to 3, preferably 2 or 3, more preferably 3.

In a preferred aspect, when there is R ⁴¹ in formula (S1), in at least one, preferably all R ⁴¹ , r1' is an integer from 0 to 2, r2' is an integer from 1 to 3, r3 ' is an integer from 0 to 2, preferably r1' is 0 or 1, r2' is 2 or 3, r3' is 0 or 1, more preferably r2' is 3.

In a preferred aspect, when there is R ^41' in formula (S1), in at least one, preferably all R ^41' , r1" is an integer from 1 to 3, preferably 2 or 3, more preferably The best is 3.

In a preferred aspect, in formula (S1), k1 is 2 or 3, preferably 3, r1 is 0, r2 is 2 or 3, preferably 3.

In a preferred aspect, in formula (S1), k1 is 2 or 3, l1 is 0 or 1, m1 is 0 or 1, r1 is 0, r2 is 2 or 3, r3 is 0 or 1; preferably System k1 is 3, r1 is 0, r2 is 2 or 3, r3 is 0 or 1; more preferably system k1 is 3, r2 is 3.

In formula (S2),

Each occurrence of the above-mentioned R ^d1 is independently -Z ² -CR ⁵¹ _s1 R ⁵² _s2 R ⁵³ _s3 .

Each occurrence of the above 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 ⁵¹ _s1 R ⁵² _s2 R ⁵³ _s3 ).

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

The above-mentioned Z ² is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5 -O-(CH ₂ ) _z6 - (wherein, z5 is an integer from 0 to 6, such as an integer from 1 to 6, and z6 is an integer of 0 to 6, such as an integer of 1 to 6), or -(CH ₂ ) _z7 -phenylene-(CH ₂ ) _z8 -(wherein, z7 is an integer of 0 to 6, such as an integer of 1 to 6 , z8 is an integer from 0 to 6, such as an integer from 1 to 6). The C _1-6 alkylene group may be a straight chain or a branched chain, but is preferably a straight chain. These groups, for example, may be substituted by 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 Not replaced.

In a preferred aspect, Z ² is C _1-6 alkylene or -(CH ₂ ) _z7 -phenylene-(CH ₂ ) _z8 -, preferably -phenylene-(CH ₂ ) _z8 - . When Z ² is the basis, light resistance, especially ultraviolet resistance becomes higher.

In another preferred aspect, Z ² is C _1-6 alkylene, preferably C _1-3 alkylene. In one aspect, Z ² may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ² can be -CH ₂ CH ₂ -.

Each occurrence of the above R ⁵¹ is independently -Z ^2' -CR ^51' _s1' R ^52' _s2' .

The above-mentioned Z ^2' is independently a single bond, an oxygen atom, or a divalent organic group each time it appears. In addition, in the structure described below as Z ^2' , the right side is bonded to (CR ^51' _s1' R ^52' _s2' ).

Z ^2' is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5' -O-(CH ₂ ) _z6' -(wherein, z5' is an integer from 0 to 6, such as an integer from 1 to 6 , z6' is an integer from 0 to 6, such as an integer from 1 to 6), or -(CH ₂ ) _z7' -phenylene-(CH ₂ ) _z8' -(wherein, z7' is an integer from 0 to 6 , such as an integer from 1 to 6, z8' is an integer from 0 to 6, such as an integer from 1 to 6). The C _1-6 alkylene group may be a straight chain or a branched chain, but is preferably a straight chain. These groups, for example, may be substituted by one or more substituents selected from fluorine atom, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, but preferably is not replaced.

In a preferred aspect, Z ^2' is C _1-6 alkylene or -(CH ₂ ) _z7' -phenylene-(CH ₂ ) _z8'- , preferably -phenylene-(CH ₂ ) _z8'- . When Z ^2' is the basis, light resistance, especially ultraviolet resistance becomes higher.

In another preferred aspect, the above-mentioned Z ^2' is a C _1-6 alkylene group, preferably a C _1-3 alkylene group. In one aspect, Z ^2' may be -CH ₂ CH ₂ CH ₂ -. In another aspect, Z ^2' can be -CH ₂ CH ₂ -.

The above-mentioned R ^51' is independently -Z ³ -SiR ^51" _m1" R ^52" _3-m1" at each occurrence.

The above-mentioned Z ³ is each independently a single bond, an oxygen atom or a divalent organic group at each occurrence. In addition, in the structure described below as Z ³ , the right side is bonded to (SiR ^51" _m1" R ^52" _3-m1" ).

In one aspect, Z ³ is an oxygen atom.

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

The above Z ³ is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5" -O-(CH ₂ ) _z6" - (wherein, z5" is an integer from 0 to 6, such as an integer from 1 to 6 , z6" is an integer from 0 to 6, such as an integer from 1 to 6), or -(CH ₂ ) _z7" -phenylene-(CH ₂ ) _z8" -(wherein, z7" is an integer from 0 to 6 , such as an integer from 1 to 6, z8" is an integer from 0 to 6, such as an integer from 1 to 6). The C _1-6 alkylene group may be a straight chain or a branched chain, but is preferably a straight chain. These groups, for example, may be substituted by one or more substituents selected from fluorine atom, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, but preferably is not replaced.

In a preferred aspect, Z ³ is C _1-6 alkylene or -(CH ₂ ) _z7" -phenylene-(CH ₂ ) _z8" -, preferably -phenylene-(CH ₂ ) _z8" ^- . When Z3 is the basis, the light resistance, especially the ultraviolet resistance becomes higher.

In another preferred aspect, the above Z ³ is a C _1-6 alkylene group, preferably 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 -.

The above-mentioned R ^{51 ″} is independently a hydroxyl group or a hydrolyzable group at each occurrence.

R ^{51 ″} is preferably independently a hydrolyzable group at each occurrence. The hydrolyzable group has the same meaning as above.

The above-mentioned R ^{52 ″} is independently a hydrogen atom or a monovalent organic group at each occurrence. The monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In the above R ^52" , 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 above m1" is independently an integer from 0 to 3 in each (SiR ^51" _m1" R ^52" _3-m1" ) unit. In formula (S2), at least one m1" is 1 to 3 -SiR ^51” _m1” R ^52” _3-m1” . That is, in this terminal part, all m1" are not 0. In other words, in the terminal parts of formulas (A1) and (A2), there is at least one Si atom bonded to a hydroxyl group or a hydrolyzable group.

m1" in each (SiR ^51" _m1" R ^52" _3-m1" ) unit is independently preferably an integer of 1 to 3, more preferably 2 to 3, and even more preferably 3.

The above-mentioned R ^52' is independently a hydrogen atom, a hydroxyl group or a monovalent organic group at each occurrence. The monovalent organic group is a monovalent organic group excluding the aforementioned hydrolyzable groups.

In R ^52' , 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 one aspect, R ^52' is hydroxyl.

In another aspect, R ^52' is a monovalent organic group, preferably a C _1-20 alkyl group, more preferably a C _1-6 alkyl group.

The above s1' is independently an integer from 0 to 3 each time it appears; the above s2' is an integer from 0 to 3 each time it appears independently. In addition, in the (CR ^51' _s1' R ^52' _s2' ) unit, the total of s1' and s2' is 3.

s1' in each (CR ^51' _s1' R ^52' _s2' ) unit is independently preferably an integer of 1 to 3, more preferably an integer of 2 to 3, and still more preferably 3.

The above-mentioned R ⁵² is independently -Z ³ -SiR ^51" _m1" R ^52" _3-m1" at each occurrence. This -Z ³ -SiR ^51” _m1” R ^52” ₃ m1” is synonymous with -Z ³ -SiR ^51” _m1” R ^52” _3-m1” in the above R ^51′ .

The above-mentioned R ⁵³ is each independently a hydrogen atom, a hydroxyl group or a monovalent organic group at each occurrence. The monovalent organic group is a monovalent organic group excluding the aforementioned hydrolyzable groups.

In the above R ⁵³ , 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 one aspect, R ⁵³ is hydroxyl.

In another aspect, in R ⁵³ , the monovalent organic group is preferably a C _1-20 alkyl group, more preferably a C _1-6 alkyl group.

The above-mentioned s1 is independently an integer from 0 to 3 each time it occurs; the above-mentioned s2 is an integer from 0 to 3 each time it appears independently; the above-mentioned s3 is an integer from 0 to 3 each time it appears independently . In addition, in the (CR ⁵¹ _s1 R ⁵² _s2 R ⁵³ _s3 ) unit, the total of s1, s2 and s3 is 3.

In one aspect, s1 is 0.

In one aspect, s1 is 0, s2 is an integer from 0 to 3, and s3 is an integer from 0 to 3. In one aspect, s1 is 0, s2 is an integer from 2 to 3, and s3 is an integer from 0 to 1. In another aspect, s1 is 0, s2 is an integer from 3, and s3 is 0.

In one aspect, s1 in each (CR ⁵¹ _s1 R ⁵² _s2 R ⁵³ _s3 ) unit is independently an integer of 1 to 3, may be an integer of 2 to 3, or may be 3. In a preferred aspect, s1 is 3.

In one aspect, s2 in each (CR ⁵¹ _s1 R ⁵² _s2 R ⁵³ _s3 ) unit is independently an integer of 1 to 3, preferably an integer of 2 to 3, more preferably 3.

In one aspect, s1 is 0, and s2 in each (CR ⁵¹ _s1 R ⁵² _s2 R ⁵³ _s3 ) unit is independently an integer from 1 to 3, preferably an integer from 2 to 3, and more preferably 3.

Each occurrence of the above R ^e1 is independently -Z ³ -SiR ^51" _m1" R ^52" _3-m1" . This -Z ³ -SiR ^{51” m1} _{” R} ^52” _3-m1” is synonymous with -Z ³ -SiR 51” m1” R ^52” _3-m1” in the above R ^51′ .

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

In the aforementioned R ^f1 , 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 one aspect, R ^f1 is hydroxyl.

In another aspect, R ^f1 is a group represented by -O(R ^f11 O) _n1 Rf ¹² . R ^f11 is C _1-6 alkylene, preferably C _1-3 alkylene, n1 is an integer from 1 to 10, preferably an integer from 1 to 6, R ^f12 is C _1-10 alkyl, relatively Preferably it is C _1-3 alkyl, such as methyl.

The above k2 is independently an integer of 0 to 3 each time, l2 is an integer of 0 to 3 each time, and m2 is an integer of 0 to 3 each time. In addition, in the (CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 ) unit, the total of k2, l2, and m2 is three.

In one aspect, when R ^Si is a group represented by formula (S2), in each terminal part of formula (A1) and formula (A2), there are preferably 2 or more, such as 2 to 27, preferably 2 to 9, more preferably 2 to 6, even more preferably 2 to 3, particularly preferably 3 "m1" is 1 to 3, preferably 2 or 3, more preferably 3 (SiR ^{51 "} _m1" R ^52" _3-m1" ) unit".

In a preferred aspect, when there is R ^51' in formula (S2), in at least one, preferably all R ^51' , m1" is an integer from 1 to 3, preferably 2 or 3, more preferably The best is 3.

In a preferred aspect, when there is R ⁵² in formula (S2), in at least one, preferably all of R ⁵² , m1" is an integer from 1 to 3, preferably 2 or 3, more preferably 3.

In a preferred aspect, when R ^e1 exists in formula (S2), in at least one, preferably all of R ^e1 , m1" is an integer from 1 to 3, preferably 2 or 3, more preferably 3.

In a preferred aspect, in formula (S2), k2 is 0, l2 is 2 or 3, preferably 3, and m1" is 2 or 3, preferably 3.

In a preferred aspect, in formula (S2), k2 is 0, l2 is 2 or 3, m2 is 0 or 1, preferably l2 is 3. In this aspect, m1" is 2 or 3, preferably 3.

In one aspect, in the formula (S2), k2 is 0, m2 is 1, l2 is 2, m1" is 2 or 3, preferably 3. For example, R ^f is represented by -O(R ^f11 O) _n1 Rf The group represented by ^12. R ^f11 , n1 and R ^f12 have the same definitions as above.

Each occurrence of the above R ⁿ is independently a group represented by -X ¹ -R ^Si , a hydrogen atom, a phenyl group or a C _1-6 alkyl group.

In one aspect, R ⁿ is a hydrogen atom, a phenyl group or a C _1-6 alkyl group, preferably a hydrogen atom or a methyl group, more preferably a hydrogen atom.

In one aspect, ^Rn is a hydrogen atom. In one aspect, ^Rn is phenyl. In one aspect, R ⁿ is C _1-6 alkyl.

In one aspect, R ⁿ is a group represented by -X ¹ -R ^Si . -X ¹ -R ^Si in R ⁿ is synonymous with -X ¹ -R ^Si in formula (A1) or (A2).

In one aspect, R ⁿ is a hydrogen atom or a methyl group, preferably a hydrogen atom; R ^Si is a group represented by formula (S1).

In the formula (S1), preferably k1 is 2 or 3, l1 is 0 or 1, and m1 is 0 or 1 (but the total of k1, l1 and m1 is 3), more preferably k1 is 3. Here, r2 is 2 or 3, preferably 3. In addition, the total of r1, r2, and r3 is three.

In one aspect, R ⁿ is a hydrogen atom or a methyl group, preferably a hydrogen atom; R ^Si is a group represented by formula (S2).

In the formula (S2), preferably l2 is 2 or 3, m2 is 0 or 1 (but the total of l2 and m2 is 3), more preferably l2 is 3. Here, m1" is 2 or 3, preferably 3.

In one aspect, R ⁿ is a hydrogen atom or a methyl group, preferably a hydrogen atom; R ^Si is a group represented by formula (S2).

In formula (S2), preferably l2 is 2 and m2 is 1. Here, m1" is 2 or 3, preferably 3.

In one aspect, R ⁿ is a group represented by -X ¹ -R ^Si , and R ^Si in formula (A1) or (A2) is a group represented by formula (S1).

In the formula (S1), preferably k1 is 2 or 3, l1 is 0 or 1, and m1 is 0 or 1 (but the total of k1, l1 and m1 is 3), more preferably k1 is 3. Here, r2 is 2 or 3, preferably 3. In addition, the total of r1, r2, and r3 is three.

In one aspect, R ⁿ is a group represented by -X ¹ -R ^Si , and R ^Si in formula (A1) or (A2) is a group represented by formula (S2).

In the formula (S2), preferably l2 is 2 or 3, m2 is 0 or 1 (but the total of l2 and m2 is 3), more preferably l2 is 3. Here, m1" is 2 or 3, preferably 3.

In one aspect, R ⁿ is a group represented by -X ¹ -R ^Si , R ^Si in formula (A1) or (A2) is a group represented by formula (S1), and k1 is 0. The preferred series l1 is 2 or 3, and the more preferred series l1 is 3.

In one aspect, in the composition disclosed herein, the silane compound having a fluoropolyether group is a compound represented by formula (A1).

In another aspect, in the composition disclosed herein, the silane compound having a fluoropolyether group is a compound represented by formula (A2).

The silane compound having a fluoropolyether group represented by the above formula (A1) or formula (A2) is not particularly limited, and may have an average molecular weight of 5×10 ² to 1×10 ⁵ . Within this range, it is preferable to have an average molecular weight of 2,000 to 32,000, more preferably 2,500 to 12,000 from the viewpoint of friction durability. In addition, the "average molecular weight" refers to a number average molecular weight, and the "average molecular weight" refers to a value measured by ¹⁹ F-NMR.

The content of the silane compound having a fluoropolyether group may be, for example, 10% by mass or less, or 3% by mass or less with respect to the composition. The said content may be 0.5 mass % or more, for example, and may be 0.01 mass % or more.

(silane compound with fluoroalkyl group)

Silane compounds with fluoroalkyl groups have the formula:

A group represented by -SiR ³¹ _n3 R ³² _3-n3 . The molecular weight of the silane compound having a fluoroalkyl group is 300 to 500.

Preferably, the silane compound having a fluoroalkyl group is represented by formula (B1).

Rf ³ -X ³¹ -SiR ³¹ _n3 R ³² _3-n3 (B1)

The above-mentioned R ³¹ is independently a hydroxyl group or a hydrolyzable group at each occurrence. The hydrolyzable group has the same meaning as above.

Each occurrence of the above R ³² is independently a hydrogen atom or a monovalent organic group. The monovalent organic group is a monovalent organic group excluding the aforementioned hydrolyzable groups.

In R ³² , 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 above-mentioned n3 is an integer of 0 to 3 independently each time it appears. However, in the silane compound having a fluoroalkyl group, at least one n3 is 1 or more.

n3 is preferably an integer of 1 to 3, more preferably 2 or 3, and still more preferably 3.

The aforementioned Rf ³ is a C _1-6 alkyl group which may be substituted by one or more fluorine atoms, preferably a C _1-6 perfluoroalkyl group, more preferably a C _2-6 perfluoroalkyl group.

In one aspect, Rf ³ is C _2-5 perfluoroalkyl. In one aspect, Rf ³ is C _3-5 perfluoroalkyl.

The above-mentioned ^X31 is a single bond, an oxygen atom or a divalent organic group.

In one aspect, X ³¹ is a single bond.

In one aspect, X ³¹ is an oxygen atom.

In one aspect, X ³¹ is a divalent organic group.

X ³¹ is preferably -(X ³¹¹ ) _z11 -(Z ³¹ ) _z12 -. The order of presence of each repeating unit enclosed in parentheses is arbitrary in ^X31 . In addition, in X ³¹ , the left side is bonded to Rf ³ .

The aforementioned ^X311 is a C _1-6 alkylene group which may be substituted by one or more fluorine atoms, preferably a C _1-3 alkylene group which is not substituted by a fluorine atom.

The aforementioned Z ³¹ are each independently an oxygen atom or a sulfur atom, preferably an oxygen atom.

Said z11 is an integer of 1-3. In one aspect, z11 is 1. In one aspect, z11 is 2. In one aspect, z11 is 3.

The above z12 is an integer of 0 to 2. In one aspect, z12 is 0. In one aspect, z12 is 1.

In one aspect, the above z11 is an integer from 1 to 5.

X ³¹ is preferably represented by -X ³¹¹ -Z ³¹ -X ³¹¹ - or -X ³¹¹ -. Examples thereof include C _1-5 alkylene-OC _1-5 alkylene, and C _1-5 alkylene.

Specific examples of X ³¹ include the following structures. -CH ₂ -, -(CH ₂ ) ₂ -, -(CH ₂ ) ₃ -, -(CH ₂ ) ₄ -, -CH ₂ -O-(CH ₂ ) ₂ -, -CH ₂ -O-(CH ₂ ) ₃ -, -CH ₂ -O-(CH ₂ ) ₄ -

Examples of silane compounds having a fluoroalkyl group include the following structures: C ₄ F ₉ (CH ₂ ) ₂ Si(OCH ₃ ) ₃ , C ₄ F ₉ CH ₂ O(CH ₂ ) ₂ Si(OCH ₃ ) ₃ , C ₄ F ₉ CH ₂ O(CH ₂ ) ₃ Si(OCH ₃ ) ₃ , C ₅ F ₁₁ (CH ₂ ) ₂ Si(OCH ₃ ) ₃ , C ₅ F ₁₁ CH ₂ O(CH ₂ ) ₂ Si(OCH ₃ ) ₃ , C ₅ F ₁₁ CH ₂ O(CH ₂ ) ₃ Si(OCH ₃ ) ₃ , C ₆ F ₁₃ (CH ₂ ) ₂ Si(OCH ₃ ) ₃ , C ₆ F ₁₃ CH ₂ O(CH ₂ ) ₂ Si(OCH ₃ ) ₃ , C ₆ F ₁₃ CH ₂ O(CH ₂ ) ₃ Si(OCH ₃ ) ₃ .

The content rate of the silane compound with fluoroalkyl group, relative to the silane compound with fluoropolyether group, is expressed in molar ratio ([the number of moles of silane compound with fluoroalkyl group]/[silane compound with fluoropolyether group] The number of moles]) is 0.001 to 1.5, preferably 0.001 to 0.5, more preferably 0.001 to 0.1, even more preferably 0.001 to 0.02.

The content of the silane compound having a fluoroalkyl group may be, for example, 0.02 mass % or less, or 0.0002 mass % or less with respect to the composition. The said content may be 0.00002 mass % or more, for example, and may be 0.000002 mass % or more.

In one aspect, the composition of the present disclosure does not include oligomers of silane compounds having fluoroalkyl groups.

(other compounds)

The composition of the present disclosure may further include 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"), which can be understood as Silicone oil (also known as polysiloxane oil) (non-reactive) silicone compound (hereinafter referred to as "silicone oil"), catalyst, surfactant, polymerization inhibitor, sensitizer, etc. .

The above-mentioned solvent may be contained in an amount of 50 to 99.8% by mass, or may be contained in an amount of 90 to 99.8% by mass relative to the composition of the present disclosure.

烷等環狀醚類；N,N-二甲基甲醯胺、N,N-二甲基乙醯胺等醯胺類；甲基賽路蘇、賽路蘇、異丙基賽路蘇、丁基賽路蘇、二乙二醇單甲醚等醚醇類；二乙二醇單乙醚乙酸酯；1,1,2-三氯-1,2,2-三氟乙烷、1,2-二氯-1,1,2,2-四氟乙烷、二甲基亞碸、1,1-二氯-1,2,2,3,3-五氟丙烷(HCFC225)、1,1,2,2,3,3,4-七氟環戊烷(例如，日本ZEON股份有限公司製的ZEORORA(註冊商標)H)、全氟丁基甲醚(C₄F₉OCH₃)(例如Sumitomo 3M股份有限公司製的Novec(商標)7100)、全氟丁基乙醚(C₄F₉OC₂H₅)(例如Sumitomo 3M股份有限公司製的Novec(商標)7200)、全氟 己基甲醚(C₂F₅CF(OCH₃)C₃F₇)(例如Sumitomo 3M股份有限公司製的Novec(商標)7300)等含氟溶劑等。或此等的2種以上之混合溶劑等。 Examples of solvents include aliphatic hydrocarbons such as hexane, cyclohexane, heptane, octane, nonane, decane, undecane, dodecane, and mineral spirits; benzene, toluene, xylene, naphthalene, Solvent naphtha and other aromatic hydrocarbons; methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, isopropyl acetate, isobutyl acetate, celuxo acetate, propylene glycol methyl ether acetate , Carbitol Acetate, Diethyl Oxalate, Ethyl Pyruvate, Ethyl-2-Hydroxy Butyrate, Ethyl Acetate, Amyl Acetate, Methyl Lactate, Ethyl Lactate, 3-Methoxy Methyl propionate, ethyl 3-methoxypropionate, methyl 2-hydroxyisobutyrate, ethyl 2-hydroxyisobutyrate and other esters; acetone, methyl ethyl ketone, methyl isobutyl ketone, 2-hexyl Ketones, cyclohexanone, methylamino ketone, 2-heptanone and other ketones; Monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether acetate, dipropylene glycol dimethyl ether, ethylene glycol monoalkyl ether, etc. Alcohol ethers; methanol, ethanol, isopropanol, n-butanol, isobutanol, tertiary butanol, second butanol, 3-pentanol, octanol, 3-methyl-3-methoxybutanol , third pentanol and other alcohols; ethylene glycol, propylene glycol and other glycols; tetrahydrofuran, tetrahydropyran, two

Alkanes and other cyclic ethers; N,N-dimethylformamide, N,N-dimethylacetamide and other amides; methyl celuso, celuso, isopropyl celuso, Butyl celuso, diethylene glycol monomethyl ether and other ether alcohols; diethylene glycol monoethyl ether acetate; 1,1,2-trichloro-1,2,2-trifluoroethane, 1, 2-dichloro-1,1,2,2-tetrafluoroethane, dimethylsulfene, 1,1-dichloro-1,2,2,3,3-pentafluoropropane (HCFC225), 1, 1,2,2,3,3,4-Heptafluorocyclopentane (for example, ZEOORA (registered trademark) H manufactured by Japan ZEON Co., Ltd.), perfluorobutyl methyl ether (C ₄ F ₉ OCH ₃ ) (for example, Sumitomo Novec (trademark) 7100 manufactured by 3M Co., Ltd.), perfluorobutyl ethyl ether (C ₄ F ₉ OC ₂ H ₅ ) (for example, Novec (trademark) 7200 manufactured by Sumitomo 3M Co., Ltd.), perfluorohexyl methyl ether ( Fluorinated solvents such as C ₂ F ₅ CF(OCH ₃ )C ₃ F ₇ ) (for example, Novec (trademark) 7300 manufactured by Sumitomo 3M Co., Ltd.) and the like. Or a mixed solvent of two or more of these, etc.

The solvent is preferably a fluorinated solvent, more preferably a hydrofluoroether, and more preferably at least one selected from the group consisting of perfluorobutyl methyl ether, perfluorobutyl ethyl ether and perfluorohexyl methyl ether, especially preferably all Fluorobutyl methyl ether (C ₄ F ₉ OCH ₃ ) and/or perfluorobutyl ethyl ether (C ₄ F ₉ OC ₂ H ₅ ).

The said fluorine-containing oil is not specifically limited, For example, the compound (perfluoro(poly)ether compound) represented by following general formula (3) is mentioned.

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 carbons that may be substituted by one or more fluorine atoms (preferably a C _1-16 perfluoroalkyl group), and Rf ⁶ represents that it may be substituted by one or more fluorine atoms C 1 to 16 alkyl (preferably C _1-16 perfluoroalkyl), fluorine atom or hydrogen atom, Rf ⁵ and Rf ⁶ are more preferably C _1-3 perfluoroalkyl independently.

a', b', c' and d' respectively represent the number of four repeating units of perfluoro(poly)ether constituting the main skeleton of the polymer, which are independently integers ranging from 0 to 300, and a' and b' The sum of , c' and d' is at least 1, preferably 1-300, more preferably 20-300. The presence order of each repeating unit marked with a', b', c' or d' and enclosed in brackets in the formula is arbitrary. Among these repeating units, -(OC ₄ F ₈ )- may be -(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 )-,-( Any one of OCF(CF ₃ )CF(CF ₃ ))-, -(OCF(C ₂ F ₅ )CF ₂ )- and (OCF ₂ CF(C ₂ F ₅ ))-, preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₃ F ₆ )- can be any of -(OCF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ )- and (OCF ₂ CF(CF ₃ ))-, preferably is -(OCF ₂ CF ₂ CF ₂ )-. -(OC ₂ F ₄ )- may be any of -(OCF ₂ CF ₂ )- and (OCF(CF ₃ ))-, preferably -(OCF ₂ CF ₂ )-.

Examples of the perfluoro(poly)ether compound represented by the above-mentioned general formula (3) include compounds represented by either of the following general formulas (3a) and (3b) (which may be one or a mixture of two or more ).

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 this equation, Rf ⁵ and Rf ⁶ are as above; in formula (3a), b" is an integer ranging from 1 to 100; in formula (3b), a" and b" are independently from 0 to 30 Integers, c" and d" are each independently an integer of 1 to 300. The presence order of each repeating unit marked a", b", c", and d" and enclosed in parentheses in the formula is arbitrary.

Also, from another point of view, the fluorine-containing oil may be a compound represented by the general formula Rf ⁴ -F (wherein, Rf ⁴ is a C _5-16 perfluoroalkyl group). Moreover, it may be a chlorotrifluoroethylene oligomer.

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

Relative to the composition of the present disclosure, for example, fluorine-containing oil may be contained in an amount of 0 to 50% by mass, preferably 0 to 30% by mass, more preferably 0 to 5% by mass. In one aspect, the composition of the present disclosure contains substantially no fluorine-containing oil. Substantial absence of fluorine-containing oil means that there is no fluorine-containing oil at all, or there may be a very small amount of fluorine-containing oil.

In one aspect, the average molecular weight of the fluorine-containing oil can be made larger than the average molecular weight of the silane compound having a fluoropolyether group. By having such an average molecular weight, more excellent friction durability and surface smoothness can be obtained especially when the surface treatment layer is formed by a vacuum evaporation method.

In one aspect, the average molecular weight of the fluorine-containing oil can also be made smaller than the average molecular weight of the silane compound having a fluoropolyether group. By becoming such an average molecular weight, the surface obtained by this compound can be suppressed The transparency of the surface treatment layer decreases, and a hardened product having high friction durability and high surface smoothness can be formed.

Fluorine-containing oils help to improve the surface smoothness of layers formed from compositions of the present disclosure.

In one aspect, 0.001 to 50 mole % of fluorine-containing oil is contained relative to the total of the silane compound having a fluoropolyether group and the silane compound having a fluoroalkyl group, for example, it may contain 0.01 to 40 mole % of fluorine-containing oil Oil.

In one aspect, the composition of the present disclosure contains a compound represented by formula (A1) and a compound represented by formula (A2) as a silane compound having a fluoropolyether group, and further contains a fluorine-containing oil.

In one aspect, it is preferable to contain 0.001 to 70 mol% of the compound represented by formula (A1), the compound represented by formula (A2), the silane compound having a fluoroalkyl group, and the fluorine-containing oil. Compound represented by formula (A2) and 0.001 to 50 mol% of fluorine-containing oil, more preferably containing 0.01 to 60 mol% of compound represented by formula (A2) and 0.01 to 40 mol% of fluorine-containing oil , and more preferably contain 0.1 to 50 mol% of the compound represented by the formula (A2) and 0.1 to 30 mol% of the fluorine-containing oil. In addition, the ratio of the number of moles of the silane compound having a fluoroalkyl group to the number of moles of the silane compound having a fluoropolyether group is 0.001 to 1.5.

In one aspect, it is preferable to contain 0.001 to 70 mol% of the compound represented by formula (A1), the compound represented by formula (A2), the silane compound having a fluoroalkyl group, and the fluorine-containing oil. The compound represented by formula (A1) and 0.001 to 50 mol% of fluorine-containing oil, more preferably containing 0.01 to 60 mol% of the compound represented by formula (A1) and 0.01 to 40 mol% of fluorine-containing oil , preferably containing 0.1 to 50 mol % of the compound represented by formula (A1) and 0.1 to 30 mol % of fluorine-containing oil. In addition, the ratio of the number of moles of the silane compound having a fluoroalkyl group to the number of moles of the silane compound having a fluoropolyether group is 0.001 to 1.5.

As the above-mentioned silicone oil, for example, linear or cyclic silicone oil having 2,000 or less siloxane bonds can be used. The linear silicone oil may be so-called straight silicone oil and modified silicone oil. Examples of linear silicone oils include dimethyl silicone oil, methyl phenyl silicone oil, and methyl hydrogen silicone oil. Modified silicone oils can be listed: modified linear silicone oils with alkyl groups, aralkyl groups, polyethers, higher fatty acid esters, fluoroalkyl groups, amino groups, epoxy groups, carboxyl groups, alcohols, etc. . Cyclic silicone oils include, for example, cyclic dimethylsiloxane oils and the like.

The composition (such as a surface treatment agent) of the present disclosure may contain 100 parts by mass of the silane compounds having a fluoropolyether group in the above-mentioned present disclosure in total (when there are two or more kinds, it is the total of these, and the same applies hereinafter). For example, 0 to 300 parts by mass, preferably 50 to 200 parts by mass of the silicone oil.

Silicone oil helps to improve the surface smoothness of the surface treatment layer.

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

The catalyst is to promote the hydrolysis and dehydration condensation of the silane compound with fluoropolyether group disclosed herein, and to promote the formation of the layer formed by the composition (such as surface treatment agent) disclosed herein.

Other components include, for example, tetraethoxysilane, methyltrimethoxysilane, 3-aminopropyltrimethoxysilane, and 3-glycidoxypropyltrimethoxysilane in addition to the above. , Methyltriacetyloxysilane, etc.

(surface treatment agent)

The composition of the present disclosure can be used as a surface treatment agent for surface treatment of a substrate.

In one aspect, the surface treatment agent of the present disclosure can be impregnated into a porous material such as a porous ceramic material, or a metal fiber such as steel wool that is hardened into a sponge, and then formed into particles. The particles can be used, for example, for vacuum evaporation.

In one aspect, the surface treatments of the present disclosure can be used for wet coating.

(thing)

The articles of the present disclosure are described below.

The article of the present disclosure includes a substrate, and a layer (surface treatment layer) formed on the surface of the substrate with a surface treatment agent containing the silane compound having a fluoropolyether group of the present disclosure.

In one aspect, the disclosed article may also include a substrate and a layer formed of the disclosed silane compound having a fluoropolyether group on the surface of the substrate.

The substrates that can be used in this disclosure can be, for example, glass, resin (natural or synthetic resin, such as general plastic material, plate, film, or other forms), metal, ceramic, semiconductor (silicon, germanium, etc. ), fibers (fabric, non-woven fabrics, etc.), fur, leather, wood, ceramics, stone, etc., and building components, etc., of any suitable material.

For example, when the article to be manufactured is an optical component, the material constituting the surface of the substrate can be a material for optical components, such as glass or transparent plastic. Also, when the article to be manufactured is an optical member, an arbitrary layer (or film) such as a hard coat layer and an antireflection layer may be formed on the surface (outermost layer) of the substrate. As the antireflection layer, any of a single-layer antireflection layer and a multilayer antireflection layer can be used. Examples of inorganic substances that can be used in the antireflection layer include: SiO ₂ , SiO, ZrO ₂ , TiO ₂ , TiO, Ti ₂ O ₃ , Ti ₂ O ₅ , Al ₂ O ₃ , Ta ₂ O ₅ , CeO ₂ , MgO, Y ₂ O ₃ , SnO ₂ , MgF ₂ , WO ₃ , etc. These inorganic substances may be used alone or in combination (for example, as a mixture) of two or more of these. In the case of a multilayer antireflection 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 part for a touch panel, a part of the surface of the substrate (glass) may have a transparent electrode, for example, a thin film of indium tin oxide (ITO) or indium zinc oxide is used. In addition, the substrate can also have an insulating layer, an adhesive layer, a protective layer, a decorative frame layer (I-CON), an atomized film layer, a hard coat layer, a polarizing film, a retardation film, and a liquid crystal display module in response to its specific specifications. group etc.

The shape of the substrate is not particularly limited. In addition, the surface area of the base material on which the surface treatment layer is to be formed should be at least a part of the surface of the base material, and can be appropriately determined according to the application and specific specifications of the article to be manufactured.

The substrate may be formed of at least a surface portion of a material originally having hydroxyl groups. Examples of such materials include glass, metals (especially base metals), ceramics, semiconductors, etc., on which a natural oxide film or thermal oxide film is formed on the surface. Or if resins have hydroxyl groups but not enough or do not have hydroxyl groups originally, by performing some pretreatment on the substrate, the hydroxyl groups can be introduced into the surface of the substrate, or the hydroxyl groups can be increased. Examples of the pretreatment include plasma treatment (such as corona discharge) and ion beam irradiation. Plasma treatment can introduce or increase hydroxyl groups on the surface of the substrate, and is also ideal for cleaning the surface of the substrate (removing foreign matter, etc.). In addition, other examples of the pretreatment include: by LB method (Langmuir-Blodgett (Langmuir-Blodgett) method) or chemical adsorption method, etc., the interfacial adsorbent having carbon-carbon unsaturated bonds is pre-mixed with a single A method in which a molecular film is formed on the surface of a substrate, and then unsaturated bonds are cleaved in an environment containing oxygen or nitrogen.

Alternatively, as the base material, at least the surface portion thereof may be made of a material containing other reactive groups, for example, a silicone compound or an alkoxysilane having one or more Si—H groups.

Next, a layer of the above-mentioned surface treatment agent of the present disclosure is formed on the surface of the substrate, and the layer is post-treated as required, whereby a layer can be formed from the surface treatment agent of the present disclosure.

The layer formation of the surface treatment agent of this disclosure can be implemented by applying the above-mentioned composition to the surface of a base material so that the said surface may be covered. The coating method is not particularly limited. For example, a wet coating method and a dry coating method can be used.

Examples of the wet coating method include dip coating, spin coating, flow coating, spray coating, roll coating, gravure coating and the like.

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

Furthermore, the coating can also be performed by an atmospheric pressure plasma method.

When using the wet coating method, the surface treatment agent disclosed in the present invention can be diluted with a solvent and then applied to the surface of the substrate. From the viewpoint of the stability of the composition disclosed in the present disclosure and the volatility of the solvent, it is preferable to use the following solvents: perfluoroaliphatic hydrocarbons with 5 to 12 carbon atoms (for example, perfluorohexane, perfluoromethyl cyclohexane and perfluoro-1,3-dimethylcyclohexane); polyfluoroaromatic hydrocarbons (such as bis(trifluoromethyl)benzene); polyfluoroaliphatic hydrocarbons (such as C ₆ F ₁₃ CH ₂ CH ₃ (such as ASAHIKLIN (registered trademark) AC-6000 manufactured by Asahi Glass Co., Ltd.), 1,1,2,2,3,3,4-heptafluorocyclopentane (such as ZEOORA ( registered trademark) H); hydrofluoroether (HFE) (such as perfluoropropyl methyl ether (C ₃ F ₇ OCH ₃ ) (such as Novec (trademark) 7000 manufactured by Sumitomo 3M Co., Ltd.), perfluorobutyl methyl ether (C ₄ F ₉ OCH ₃ ) (such as Novec (trademark) 7100 manufactured by Sumitomo 3M Co., Ltd.), perfluorobutyl ether (C ₄ F ₉ OC ₂ H ₅ ) (such as Novec (trademark) manufactured by Sumitomo 3M Co., Ltd. 7200), perfluorohexyl methyl ether (C ₂ F ₅ CF (OCH ₃ ) C ₃ F ₇ ) (for example, Novec (trademark) 7300 manufactured by Sumitomo 3M Co., Ltd.) and other alkyl perfluoroalkyl ethers (perfluoroalkyl and the alkyl group may be linear or branched), or CF ₃ CH ₂ OCF ₂ CHF ₂ (for example, ASAHIKLIN (registered trademark) AE-3000 manufactured by Asahi Glass Co., Ltd.) etc. These solvents may be used alone or Use as a mixture of two or more types. Among them, hydrofluoroethers are preferred, and perfluorobutyl methyl ether (C ₄ F ₉ OCH ₃ ) and/or perfluorobutyl ethyl ether (C ₄ F ₉ OC ₂ H ₅ ) are particularly preferred. .

It is preferable to use the same solvent as that of the composition of the present disclosure as the solvent used in the wet coating method.

When using the dry coating method, the surface treatment agent disclosed in the present disclosure can be directly used in the dry coating method, or diluted with the above-mentioned solvent and then used in the dry coating method.

The surface treatment agent disclosed in the present disclosure can be effectively used in a wet coating method, especially a spray coating method, from the viewpoint of obtaining good dispersibility.

The layer formation of the surface treatment agent is preferably carried out in such a manner that the surface treatment agent of the present disclosure and a catalyst for hydrolysis and dehydration condensation coexist in the layer. In short, when performing the wet coating method, after diluting the surface treatment agent of the present disclosure with a solvent, a catalyst can be added to the diluted solution of the surface treatment agent of the present disclosure immediately before applying it to the surface of the substrate. When the dry coating method is carried out, the surface treatment agent of the disclosure added with the catalyst is directly evaporated (usually vacuum evaporation), or the surface treatment agent of the disclosure added with the catalyst can be impregnated into the iron or copper or other metal porous body for vapor deposition (usually vacuum vapor deposition) treatment.

Any suitable acid or base can be used as the catalyst. As the acid catalyst, for example, acetic acid, formic acid, trifluoroacetic acid and the like can be used. Moreover, as an alkali catalyst, ammonia, organic amines, etc. can be used, for example.

The article of the present disclosure is produced by forming a layer derived from the surface treatment agent of the present disclosure on the surface of the substrate as described above. The above-mentioned layer thus obtained has both high surface smoothness and high friction durability. In addition, the above-mentioned layer, in addition to high friction durability, is also related to the composition of the surface treatment agent used, but it may have water-repellent properties, oil-repellent properties, anti-fouling properties (such as preventing adhesion of stains such as fingerprints), water-repellent properties ( Prevent water from entering electronic parts, etc.), surface smoothness (or lubricity, such as the ability to wipe off stains such as fingerprints, and excellent touch to fingers), etc., and can be ideally used as a functional film.

That is, the present disclosure further relates to an optical material having the above-mentioned surface treatment layer on the outermost layer.

As the optical material, in addition to the optical materials related to the display etc. which will be exemplified later, various optical materials such as cathode ray tube (CRT; for example, personal computer monitor), liquid crystal display, plasma display, organic EL display, inorganic thin film EL dot matrix display, rear projection display, fluorescent display tube (VFD), field emission display (FED; Field Emission Display) and other displays or protective plates for such displays, or in These surfaces are treated with anti-reflective coating.

An article having a layer obtained from the present disclosure is not particularly limited, and may be an optical member. Examples of optical components include the following: lenses such as glasses; protective plates, anti-reflection plates, polarizing plates, and anti-glare plates for displays such as PDPs and LCDs; touch panel sheets for mobile phones and mobile information terminals; blue light ( Disc surfaces of Blu-ray (registered trademark) discs, DVD discs, CD-R, MO and other optical discs; optical fibers; display surfaces of clocks, etc.

Also, an article having a layer resulting from the present disclosure can be a medical device or a medical material.

Also, an article having a layer obtained from the present disclosure may be an automotive interior and exterior member. Examples of exterior materials include the following: windows, lamp covers, and exterior camera covers. Examples of interior materials include instrument panel covers, navigation system touch panels, and decorative interior materials.

The thickness of the above layer is not particularly limited. In the case of an optical member, the thickness of the above layer is preferably in the range of 1 to 50 nm, 1 to 30 nm, preferably 1 to 15 nm from the viewpoint of optical performance, surface smoothness, friction durability and antifouling property.

The articles obtained by using the composition (such as the surface treatment agent) of the present disclosure are described in detail above. In addition, the use, method of use, and method of manufacturing the composition including the silane compound having a fluoropolyether group or the composition containing a silane compound having a fluoropolyether group of the present disclosure are not limited to those exemplified above.

Although the embodiment has been described above, it should be understood that various changes in the form and details are possible unless departing from the gist and scope of the claims.

[Example]

The surface treatment agent of the present invention will be described more specifically by the following examples, but the present invention is not limited to these examples. In addition, in this Example, all the chemical formulas shown below represent an average composition. In this example, the order of existence of the repeating units constituting the perfluoropolyether is arbitrary.

(Examples 1 to 7)

A silane compound (compound A1) having a fluoropolyether group was dissolved in hydrofluoroether (manufactured by 3M, Novec HFE-7200) so that the solid content concentration was 0.06% by mass. Furthermore, silane compounds (compounds B1 to B3) having a fluoroalkyl group were added to this solution at the ratios described in Table 1 to prepare a surface treatment agent. In addition, the value described as "molar ratio" in the table|surface means the ratio (molar ratio) of the number of moles of the silane compound which has a fluoroalkyl group with respect to the number of moles of compound A1.

(m≒21, n≒35)

Compound B1: C ₂ F ₅ CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₃

Compound B2: C ₄ F ₉ CH ₂ CH ₂ Si(OCH ₃ ) ₃

Compound B3: C ₆ F ₁₃ CH ₂ CH ₂ Si(OCH ₃ ) ₃

(Examples 8 to 14)

A silane compound (compound A2) having a fluoropolyether group was dissolved in hydrofluoroether (manufactured by 3M, Novec HFE-7200) so that the solid content concentration was 0.06% by mass. Furthermore, silane compounds (compounds B1 to B3) having a fluoroalkyl group were added to this solution at the ratios described in Table 2 to prepare a surface treatment agent. In addition, the numerical value described as "molar ratio" in a table|surface means the ratio (molar ratio) of the number of moles of the silane compound which has a fluoroalkyl group with respect to the number of moles of compound A2.

(m≒21, n≒35)

(comparative example 1)

A surface treatment agent was prepared by dissolving a silane compound (compound A1) having a fluoropolyether group in hydrofluoroether (manufactured by 3M, Novec HFE-7200) so that the solid content concentration was 0.06% by mass.

(comparative example 2)

A silane compound (compound A1) having a fluoropolyether group was dissolved in hydrofluoroether (manufactured by 3M, Novec HFE-7200) so that the solid content concentration was 0.06% by mass. Furthermore, a silane compound (compound B2) having a fluoroalkyl group was added to this solution in the amount described in Table 1 to prepare a surface treatment agent.

(comparative example 3)

A surface treatment agent was prepared by dissolving a silane compound (compound A2) having a fluoropolyether group in hydrofluoroether (manufactured by 3M, Novec HFE-7200) so that the solid content concentration was 0.06% by mass.

(comparative example 4)

A silane compound (compound A2) having a fluoropolyether group was dissolved in hydrofluoroether (manufactured by 3M, Novec HFE-7200) so that the solid content concentration was 0.06% by mass. Furthermore, a silane compound (compound B2) having a fluoroalkyl group was added to this solution in the amount described in Table 2 to prepare a surface treatment agent.

(Formation of surface treatment layer)

Using a spraying device equipped with a two-fluid nozzle (manufactured by Toho Chemical Co., Ltd.), the surface treatment agent prepared above was uniformly sprayed on the surface of a substrate (chemically strengthened glass (manufactured by Corning, "Gorilla" glass, thickness 0.7 mm). The coating amount of the surface treatment agent was 48 g/m ² . The coated substrate was heated at 150° C. for 30 minutes to form a cured film.

(Evaluation)

The abrasion durability of the cured films obtained in Examples 1 to 14 and Comparative Examples 1 to 4 above was measured.

(Eraser friction durability test)

Using a friction tester (manufactured by Shinto Scientific Co., Ltd.), the contact angle to water was measured every 2500 times of friction under the following conditions, and the test was continued until it was less than 100°. The environmental conditions of the test are 25°C and 40%RH. The number of times of rubbing at less than 100° is regarded as the result of the eraser rubbing durability test and is shown in Tables 1 and 2.

Eraser: Raber Eraser (manufactured by Minoan Corporation)

Ground area: 6mm

Moving distance (unidirectional): 30mm

Movement speed: 40 back and forth / minute

Load: 1kg/6mm

[Table 1]

[Table 2]

[industrial availability]

The surface treatment agent disclosed herein can be ideally used to form a surface treatment layer on a variety of substrates, especially optical members requiring penetrability.

Claims (24)

A composition comprising a silane compound having a fluoropolyether group represented by the following formula (A1) or (A2), and a fluoroalkyl group having a group represented by the following formula (B) and having a molecular weight of 300 to 500 silane compounds;

-SiR ³¹ _n3 R ³² _3-n3 (B) The ratio of the number of moles of the aforementioned silane compound having a fluoroalkyl group to the number of moles of the aforementioned silane compound having a fluoropolyether group is 0.001 to 1.5; In the formula: R ^F1 is Rf ¹ -R ^F -O _q -; R ^F2 is -Rf ² _p -R ^F -O _q -; Rf ¹ is a C _1-16 alkyl group that may be substituted by one or more fluorine atoms; Rf ² is a C _1-6 alkylene group that may be substituted by one or more fluorine atoms; Each occurrence of R ^F is independently a basis represented by the following 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 -; a, b, c, d, e and f are independently integers from 0 to 200, the sum of a, b, c, d, e and f is at least 1, and a, b, c, d, e or f and the presence order of each repeating unit enclosed in brackets in the formula is arbitrary; Each occurrence of R ^Fa is independently a hydrogen atom, a fluorine atom or a chlorine atom; p is 0 or 1; q is independently 0 or 1; Each occurrence of R ^Si is independently any one of the groups represented by the following formulas (S1) to (S2); -SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 (S1) -CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 (S2) each occurrence of R ^a1 is independently -Z ¹ -SiR ⁴¹ _r1 R ⁴² _r2 R ⁴³ _r3 ; Each occurrence of Z ¹ is independently an oxygen atom or a divalent organic group; Each occurrence of R ⁴¹ is independently -Z ^1' -SiR ^41' _r1' R ^42' _r2' R ^43' _r3' ; Each occurrence of Z ^1' is independently an oxygen atom or a divalent organic group; each occurrence of R ^41' is independently -Z ^1" -SiR ^41" _r1" R ^42" _r2" ; Each occurrence of Z ^1" is independently an oxygen atom or a divalent organic group; R ^41" is independently at each occurrence a hydroxyl group or a hydrolyzable group; Each occurrence of R ^42" is independently a hydrogen atom or a monovalent organic group; r1" is independently at each occurrence an integer from 0 to 3; r2" is independently at each occurrence an integer from 0 to 3; R ^42' is independently at each occurrence a hydroxyl group or a hydrolyzable group; Each occurrence of R ^43' is independently a hydrogen atom or a monovalent organic group; r1' is independently an integer from 0 to 3 at each occurrence; r2' is independently an integer from 0 to 3 at each occurrence; r3' is independently an integer from 0 to 3 each time it occurs; R ⁴² is independently at each occurrence a hydroxyl group or a hydrolyzable group; Each occurrence of ^R43 is independently a hydrogen atom or a monovalent organic group; r1 is independently an integer from 0 to 3 at each occurrence; r2 is independently an integer from 0 to 3 at each occurrence; r3 is independently an integer from 0 to 3 at each occurrence; each occurrence of R ^b1 is independently hydroxyl or a hydrolyzable group; Each occurrence of R ^c1 is independently a hydrogen atom or a monovalent organic group; k1 is independently an integer from 0 to 3 at each occurrence; l1 is independently an integer from 0 to 3 at each occurrence; m1 is independently an integer from 0 to 3 at each occurrence; However, in formula (S1), there is at least one Si atom bonded to a hydroxyl group or a hydrolyzable group; R ^d1 is independently at each occurrence -Z ² -CR ⁵¹ _s1 R ⁵² _s2 R ⁵³ _s3 ; Each occurrence of ^Z2 is independently a single bond, an oxygen atom or a divalent organic group; R ⁵¹ is independently at each occurrence -Z ^2' -CR ^51' _s1' R ^52' _s2' ; Each occurrence of Z ^2' is independently a single bond, an oxygen atom or a divalent organic group; R ^51' is independently at each occurrence -Z ³ -SiR ^51" _m1" R ^52" _3-m1" ; Each occurrence ^of Z3 is independently a single bond, an oxygen atom or a divalent organic group; R ^51" is independently at each occurrence a hydroxyl group or a hydrolyzable group; R ^52" is independently a hydrogen atom or a monovalent organic group at each occurrence; m1" is independently at each occurrence an integer from 0 to 3; Each occurrence of R ^52' is independently a hydrogen atom, a hydroxyl group or a monovalent organic group; s1' is independently an integer from 0 to 3 each time it occurs; s2' is independently an integer from 0 to 3 each time it occurs; R ⁵² is independently at each occurrence -Z ³ -SiR ^51" _m1" R ^52" _3-m1" ; Each occurrence of ^R53 is independently a hydrogen atom, a hydroxyl group or a monovalent organic group; s1 is independently an integer from 0 to 3 at each occurrence; s2 is independently an integer from 0 to 3 at each occurrence; s3 is independently an integer from 0 to 3 at each occurrence; R ^e1 is independently at each occurrence -Z ³ -SiR ^51" _m1" R ^52" _3-m1" ; Each occurrence of R ^f1 is independently a hydrogen atom, a hydroxyl group or a monovalent organic group; k2 is independently an integer from 0 to 3 at each occurrence; l2 is independently an integer from 0 to 3 at each occurrence; m2 is independently an integer from 0 to 3 at each occurrence; However, in formula (S2), there is at least one -SiR ^51" _m1" R ^52" _3-m1" in which m1" is 1 to 3; Each occurrence of R ⁿ is independently a group represented by -X ¹ -R ^Si , a hydrogen atom, a phenyl group or a C _1-6 alkyl group; Each occurrence of X1 is independently ^a single bond or a divalent organic group; R independently ^at each occurrence is hydroxyl or a hydrolyzable group; Each occurrence of ^R32 is independently a hydrogen atom or a monovalent organic group; n3 is independently an integer from 0 to 3 each time it occurs; However, in the aforementioned silane compound having a fluoroalkyl group, at least one n3 is 1 or more. The composition as described in Claim 1, wherein, Each occurrence of R ^F is independently represented by the following formula (f1), (f2), (f3), (f4) or (f5): -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1) In the formula, 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 an integer of 0 to 30, and e and f are each independently an integer of 1 to 200, The sum of c, d, e and f is 2 or more, Mark c, d, e or f and the presence order of each repeating unit enclosed in brackets in the formula is arbitrary; -(R ⁶ -R ⁷ ) _g - (f3) In the formula, 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 , g is an integer from 2 to 100; -(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 - (f4) In the formula, e is an integer ranging from 1 to 200, a, b, c, d and f are independently integers ranging from 0 to 200, and the sum of a, b, c, d, e and f is at least 1, and , the order of the repeating units marked a, b, c, d, e or f and enclosed in brackets in the formula is arbitrary; -(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, f is an integer of 1 to 200, a, b, c, d and e are each independently an integer of 0 to 200, and the sum of a, b, c, d, e and f is at least 1, and , the order of the repeating units marked a, b, c, d, e or f and enclosed in brackets in the formula is arbitrary. The composition as described in Claim 1 or 2, wherein each occurrence of X ¹ is independently the group represented by -(R ²¹ ) _p1 -(X ^a ) _q1 -; In the formula: R ²¹ is a single bond, -(CH ₂ ) _p2 - which may be substituted by one or more fluorine atoms, or an o-, m-, or p-phenylene group, p2 is an integer from 1 to 20, X ^a represents -(X ^b ) _q2 -, Each occurrence of X ^b is independently selected from -O-, -S-, o-, m-, or p-phenylene, -(OR ³⁵ ) _n4 -, -C(O)O-, -Si(R ³³ ) ₂ -, -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -, -CON(R ³⁴ )-, -O-CON(R ³⁴ )-, -N(R ³⁴ ) - and -(CH ₂ ) _n' - the radical in the group formed, R ³³ is independently phenyl, C _1-6 alkyl or C _1-6 alkoxy at each occurrence, R ³⁴ is independently a hydrogen atom, a phenyl group or a C _1-6 alkyl group at each occurrence, R ³⁵ is independently C _1-6 alkylene at each occurrence, n4 is independently an integer from 1 to 5 at each occurrence, m' is independently at each occurrence an integer from 1 to 100, n' is independently at each occurrence an integer from 1 to 20, q2 is an integer from 1 to 10, p1 is 0 or 1, q1 is 0 or 1, Here, the order of presence of each repeating unit enclosed in parentheses indicated by p1 or q1 is arbitrary. The composition according to any one of claims 1 to 3, wherein Z ¹ and Z ³ are independently C _1-6 alkylene groups at each occurrence. The composition according to any one of claims 1 to 4, wherein k1 is 2 or 3, and r2 is 2 or 3. The composition according to any one of claims 1 to 4, wherein k1 is 0, and l1 is 2 or 3. The composition as described in any one of claims 1 to 4, wherein l2 is 2 or 3, and m1" is 2 or 3. The composition as described in any one of claims 1 to 4, wherein l2 is 2 and m2 is 1. The composition as described in any one of claims 1 to 8, wherein R ⁿ is a hydrogen atom, a phenyl group or a C _1-6 alkyl group. The composition according to any one of claims 1 to 8, wherein R ⁿ is represented by -X ¹ -R ^Si . The composition according to claim 10, wherein R ⁿ is represented by -X ¹ -R ^Si , R ^Si in formula (A1) or (A2) is represented by formula (S1), and k1 is 0. The composition according to any one of claims 1 to 10, wherein R ^Si is represented by formula (S1). The composition according to any one of claims 1 to 10, wherein R ^Si is represented by formula (S2). The composition as described in any one of claims 1 to 13, wherein the aforementioned silane compound having a fluoroalkyl group is represented by formula (B1): Rf ³ -X ³¹ -SiR ³¹ _n3 R ³² _3-n3 (B1) Rf ³ is a C _1-6 alkyl group that may be substituted by one or more fluorine atoms; ^X31 is a single bond, an oxygen atom or a divalent organic group; R ³¹ are each independently a hydroxyl group or a hydrolyzable group; ^R32 are each independently a hydrogen atom or a monovalent organic group; n3 is an integer of 1 to 3. The composition as claimed in claim 14, wherein Rf ³ is C _1-6 perfluoroalkyl. The composition as described in claim 14 or 15, wherein, X ³¹ is represented by -(X ³¹¹ ) _z11 -(Z ³¹ ) _z12 -, X ³¹¹ is a C _1-6 alkylene group that may be substituted by one or more fluorine atoms, Z ³¹ are each independently an oxygen atom or a sulfur atom, z11 is an integer from 1 to 3, z12 is an integer from 0 to 2, However, the order of presence of each repeating unit enclosed in parentheses is arbitrary in ^X31 . The composition according to any one of claims 1 to 16, wherein n3 is 3. The composition according to any one of claims 1 to 17, further comprising fluorine-containing oil. The composition as described in Claim 18, wherein the aforementioned fluorine-containing oil is represented by the following formula, Rf ⁵ -(OC ₄ F ₈ ) _a' -(OC ₃ F ₆ ) _b' -(OC ₂ F ₄ ) _c' -(OCF ₂ ) _d' -Rf ⁶ Rf ⁵ and Rf ⁶ are each independently an alkyl group having 1 to 16 carbon atoms which may be substituted by one or more fluorine atoms, a' and b' are each independently an integer of 0 to 30, c' and d' are each independently an integer of 1 to 200, and the sum of a', b', c' and d' is at least 5 or more, The presence order of each repeating unit marked with a', b', c' or d' and enclosed in brackets in the formula is arbitrary. The composition according to any one of claims 1 to 19, which comprises a silane compound having a fluoropolyether group represented by formula (A1) and a silane compound having a fluoropolyether group represented by formula (A2) to As a silane compound having a fluoropolyether group, And more with fluorine oil. The composition according to any one of claims 1 to 20, which does not contain oligomers of compounds selected from the group consisting of the aforementioned silane compounds having a fluoroalkyl group. A surface treatment agent comprising the composition according to any one of claims 1 to 21. The surface treatment agent as described in claim 22, which is used for wet coating. A kind of article, has base material, and is formed on the base material surface by the composition as described in any one in claim 1 to 21 or the surface treatment agent as described in any one in claim 22 to 23 Floor.