KR102322019B1 - Composition comprising a silane compound containing a perfluoro (poly) ether group - Google Patents

Abstract

The present invention relates to the following general formulas (A1), (A2), (B1), (B2), (C1), (C2), (D1) and (D2): [wherein each symbol is a description of the specification at least one perfluoro (poly) ether group-containing silane compound and the following formula (E1): [wherein each symbol has the same meaning as described in the specification] It provides a composition comprising at least one compound comprising:

Description

Composition comprising a silane compound containing a perfluoro (poly) ether group

The present invention includes a composition comprising a silane compound containing a perfluoro(poly)ether group, specifically, a silane compound containing a perfluoro(poly)ether group and an acid or acid derivative containing a perfluoro(poly)ether group It relates to a composition that

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

As such a fluorine-containing silane compound, a perfluoropolyether group-containing silane compound having a perfluoropolyether group in the molecular main chain and a hydrolyzable group bonded to an Si atom at the molecular terminal or terminal is known. For example, Patent Documents 1 and 2 describe a silane compound containing a perfluoropolyether group having a hydrolyzable group bonded to a Si atom at the molecular terminal or terminal portion.

International Publication No. 97/07155 Japanese Patent Publication No. 2008-534696

A layer obtained from a surface treatment agent containing a perfluoropolyether group-containing silane compound can exhibit functions such as water repellency, oil repellency, and antifouling properties even in a thin film, so that light transmittance and transparency are required for glasses, touch panels, etc. It is used suitably for an optical member. In particular, in these applications, friction durability is required so that such a function can be maintained even when subjected to repeated friction.

An object of the present invention is to provide a composition comprising a silane compound containing a perfluoro (poly) ether group capable of forming a layer having water repellency, oil repellency, antifouling property, and water resistance, and having high friction durability. .

As a result of intensive studies, the present inventors have found that by using a composition comprising a silane compound containing a perfluoro (poly) ether group and an acid or an acid derivative containing a perfluoro (poly) ether group, a surface treatment having high friction durability It discovered that a layer could be formed, and came to complete this invention.

That is, according to the first aspect of the present invention, the following general formulas (A1), (A2), (B1), (B2), (C1), (C2), (D1) and (D2):

[During the ceremony:

PFPE ¹ is each independently for each occurrence, the formula:

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

(wherein a, b, c, d, e and f are each independently an integer of 0 or more and 200 or less, the sum of a, b, c, d, e and f is at least 1, a, b, The order of existence of each repeating unit appended with c, d, e or f and enclosed in parentheses is arbitrary in the formula)

is a group represented by;

Rf ¹ each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms in each occurrence;

R ¹ each independently represents a hydroxyl group or a hydrolyzable group in each occurrence;

R ² in each occurrence each independently represents a hydrogen atom or an alkyl group having 1 to 22 carbon atoms;

R ¹¹ in each occurrence each independently represents a hydrogen atom or a halogen atom;

R ¹² in each occurrence each independently represents a hydrogen atom or a lower alkyl group;

n1 is an integer of 0 to 3 independently for each ^{(-SiR 1} _n1 R ² _{3-n1 ) unit;}

provided that, in formulas (A1), (A2), (B1) and (B2), at least one n1 is an integer of 1 to 3;

X ¹ each independently represents a single bond or a 2- to 10-valent organic group;

X ² each independently represents a single bond or a divalent organic group in each occurrence;

t is, independently for each occurrence, an integer from 1 to 10;

α is each independently an integer from 1 to 9;

each α′ is independently an integer from 1 to 9;

X ⁵ each independently represents a single bond or a 2- to 10-valent organic group;

each β is independently an integer from 1 to 9;

each β′ is independently an integer from 1 to 9;

X ⁷ each independently represents a single bond or a 2- to 10-valent organic group;

each γ is independently an integer from 1 to 9;

each γ′ is independently an integer from 1 to 9;

R ^a represents, independently for each occurrence, -Z ¹ -SiR ⁷¹ _p1 R ⁷² _q1 R ⁷³ _r1 ;

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

R ⁷¹ at each occurrence, each independently, represents ^{R a′;}

R ^a' has the same meaning as ^{R a ;}

R ^a Among them, the number of Si connected in a straight chain through the ^{Z 1 group is at most 5;}

R ⁷² in each occurrence each independently represents a hydroxyl group or a hydrolyzable group;

R ⁷³ in each occurrence each independently represents a hydrogen atom or a lower alkyl group;

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

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

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

provided that, in formulas (C1) and (C2), at least one q1 is an integer of 1 to 3;

R ^b each independently represents a hydroxyl group or a hydrolyzable group in each occurrence;

R ^c at each occurrence each independently represents a hydrogen atom or a lower alkyl group;

k1 for each occurrence, each independently, is an integer from 1 to 3;

l1 is, independently for each occurrence, an integer from 0 to 2;

m1 is, independently for each occurrence, an integer from 0 to 2;

X ⁹ each independently represents a single bond or a 2- to 10-valent organic group;

each δ is independently an integer from 1 to 9;

each δ′ is independently an integer from 1 to 9;

R ^d represents, independently for each occurrence, -Z ² -CR ⁸¹ _p2 R ⁸² _q2 R ⁸³ _r2 ;

Z ² at each occurrence each independently represents an oxygen atom or a divalent organic group;

R ⁸¹ for each occurrence each independently represents ^{R d';}

R ^d' has the same meaning as ^{R d ;}

Among R ^d , Cs connected in a straight chain through a ^{Z 2 group are at most 5;}

R ⁸² at each occurrence each independently represents -Y-SiR ⁸⁵ _n2 R ⁸⁶ _3-n2 ;

Y each independently represents a divalent organic group at each occurrence;

R ⁸⁵ each independently represents a hydroxyl group or a hydrolyzable group in each occurrence;

R ⁸⁶ in each occurrence each independently represents a hydrogen atom or a lower alkyl group;

n2 represents an integer of 1 to 3 independently for each (-Y-SiR ⁸⁵ _n2 R ⁸⁶ _{3-n2 ) unit;}

provided that, in formulas (D1) and (D2), at least one n2 is an integer of 1 to 3;

R ⁸³ in each occurrence each independently represents a hydrogen atom or a lower alkyl group;

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

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

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

R ^e represents, independently for each occurrence, -Y-SiR ⁸⁵ _n2 R ⁸⁶ _3-n2 ;

R ^f at each occurrence each independently represents a hydrogen atom or a lower alkyl group;

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

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

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

However, in formulas (D1) and (D2), at least one q2 is 2 or 3, or at least one l2 is 2 or 3.]

At least one perfluoro (poly) ether group-containing silane compound represented by any of

Formula (E1):

[During the ceremony:

PFPE ² is each independently for each occurrence, the formula:

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

(wherein a, b, c, d, e and f are each independently an integer of 0 or more and 200 or less, the sum of a, b, c, d, e and f is at least 1, a, b, The order of existence of each repeating unit appended with c, d, e or f and enclosed in parentheses is arbitrary in the formula)

is a group represented by;

Rf ² in each occurrence independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms;

Z ² represents a single bond or a divalent organic group;

x is 1 or 2;

when x is 1, A is -COOR ³ , -PO(OR ³ ) ₂ , -SO ₂ (OR ³ ) or -SO(OR ³ );

when x is 2, A is -PO(OR ³ )-;

R ³ is a hydrogen atom or a hydrocarbon group.]

at least one compound represented by

There is provided a composition comprising a.

According to the second aspect of the present invention, there is provided an article comprising a substrate and a layer formed of the composition of the present invention on the surface of the substrate.

According to the third aspect of the present invention, the formula (E1):

[During the ceremony:

Rf ² each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms;

PFPE ² is each independently -(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 ) _{represents f} -, wherein a, b, c, d, e and f are each independently an integer of 0 or more and 200 or less, and the sum of a, b, c, d, e and f is at least 1 , and the order of existence of each repeating unit appended with a, b, c, d, e or f and enclosed in parentheses is arbitrary in the formula;

Z ² represents a single bond or a divalent organic group;

x is 1 or 2;

when x is 1, A is -COOR ³ , -PO(OR ³ ) ₂ , -SO ₂ (OR ³ ) or -SO(OR ₃ );

when x is 2, A is -PO(OR ³ )-;

R ³ is a hydrogen atom or a hydrocarbon group.]

There is provided a condensation accelerator for a silane compound containing a perfluoro (poly) ether group, comprising at least one compound represented by

By using a composition comprising the perfluoro(poly)ether group-containing silane compound of the present invention and a perfluoro(poly)ether group-containing acid or acid derivative, a surface treatment layer having high friction durability can be formed .

Hereinafter, the composition of this invention is demonstrated.

As used herein, a "hydrocarbon group" is a group containing carbon and hydrogen, and means a group in which one hydrogen atom is removed from a hydrocarbon. Although it does not specifically limit as such a hydrocarbon group, A C1-C20 hydrocarbon group which may be substituted by one or more substituents, for example, an aliphatic hydrocarbon group, an aromatic hydrocarbon group, etc. are mentioned. The "aliphatic hydrocarbon group" may be linear, branched or cyclic, and may be either saturated or unsaturated. In addition, the hydrocarbon group may contain one or more ring structures. Moreover, such a hydrocarbon group may have one or more N, O, S, Si, amide, sulfonyl, siloxane, carbonyl, carbonyloxy, etc. in the terminal or molecular chain.

Although it does not specifically limit as a substituent of "hydrocarbon group" when used in this specification, For example, a halogen atom; _{C 1-6} alkyl group, C _2-6 alkenyl group, C _2-6 alkynyl group, C _3-10 cycloalkyl group, C _3-10 unsaturated cycloalkyl group, which may be substituted with one or more halogen atoms, 5 and one or more groups selected from a to 10 membered heterocyclyl group, a 5 to 10 membered unsaturated heterocyclyl group, a C _6-10 aryl group, and a 5 to 10 membered heteroaryl group.

When used in this specification, "a divalent to decavalent organic group" means a carbon-containing divalent to decavalent group. Although it does not specifically limit as such a 2-10 valence organic group, 2-10 valence group which further removed 1-9 hydrogen atoms from the hydrocarbon group is mentioned. For example, although it does not specifically limit as a divalent organic group, The divalent group which removed one hydrogen atom from a hydrocarbon group is mentioned.

The present invention relates to the following general formulas (A1), (A2), (B1), (B2), (C1), (C2), (D1) and (D2):

At least one perfluoro (poly) ether group-containing silane compound represented by any of

Formula (E1):

At least one perfluoro (poly) ether group-containing acid or acid derivative represented by (hereinafter also referred to as “perfluoro (poly) ether modified compound”)

To provide a composition comprising (hereinafter also referred to as "composition of the present invention").

Hereinafter, perfluoro (poly) ether group-containing silane compounds represented by the formulas (A1), (A2), (B1), (B2), (C1), (C2), (D1) and (D2) explain about

Formulas (A1) and (A2):

In the above formula, PFPE ¹ is each independently,

-(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 -

is a group represented by In the formula, a, b, c, d, e and f are each independently an integer of 0 or more and 200 or less, 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 or more and 100 or less. Preferably, the sum of a, b, c, d, e and f is 5 or more, More preferably, it is 10 or more, for example, 10 or more and 100 or less. In addition, the order of existence of each repeating unit enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.

Although these repeating units may be linear or branched, they are preferably linear. For example, -(OC ₆ F ₁₂ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ CF ₂ CF ₂ )-, -( OCF ₂ CF(CF ₃ )CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ CF(CF ₃ )CF ₂ ) -, -(OCF ₂ CF _{2 CF 2} CF ₂ CF ₂ CF(CF ₃ ))- may be used, but is preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₅ F ₁₀ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ )CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ CF(CF ₃ ))-, etc. may be used, but preferably -(OCF ₂ CF _{2 ).} CF ₂ CF ₂ CF ₂ )-. -(OC ₄ F ₈ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ )CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ ))-, -(OC(CF ₃ ) ₂ CF ₂ )-, -(OCF ₂ C(CF ₃ ) ₂ )-, -(OCF(CF ₃ )CF(CF) ₃ ))-, -(OCF(C ₂ F ₅ )CF ₂ )- and -(OCF ₂ CF(C ₂ F ₅ ))- may be any, but preferably -(OCF ₂ CF ₂ CF ₂ CF) ₂ )- is. -(OC ₃ F ₆ )- may be any of -(OCF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ )-, and -(OCF ₂ CF(CF ₃ ))-, but is preferred. Usually -(OCF ₂ CF ₂ CF ₂ )-. Further, -(OC ₂ F ₄ )- may be any of -(OCF ₂ CF ₂ )- and -(OCF(CF ₃ ))-, but is preferably -(OCF ₂ CF ₂ )-.

In one embodiment, the PFPE ¹ is -(OC ₃ F ₆ ) _d - (wherein d is an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less. )am. Preferably, PFPE ¹ is -(OCF ₂ CF ₂ CF ₂ ) _d - (wherein d is an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less) or -(OCF(CF ₃ )CF ₂ ) _d - (wherein d is an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less). More preferably, PFPE ¹ is -(OCF ₂ CF ₂ CF ₂ ) _d - (wherein d is an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less) am.

In another embodiment, PFPE ¹ is -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (wherein c and d are each independently an integer of 0 or more and 30 or less, e and f are each independently an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less, and the subscript c, d, e or The order of existence of each repeating unit enclosed in parentheses after appending f is arbitrary in the formula). Preferably PFPE ¹ is -(OCF ₂ CF ₂ CF ₂ CF ₂ ) _c -(OCF ₂ CF ₂ CF ₂ ) _d -(OCF ₂ CF ₂ ) _e -(OCF ₂ ) _f -. In one embodiment, PFPE ¹ is -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (wherein e and f are each independently 1 or more and 200 or less, preferably 5 or more and 200 or less, more Preferably, it is an integer of 10 or more and 200 or less, and the order of existence of each repeating unit enclosed in parentheses with a subscript e or f may be arbitrary in the formula).

In another embodiment, PFPE ¹ is a group represented by -(R ⁶ -R ⁷ ) _{q -.} In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ , preferably OC ₂ F ₄ . wherein 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 2 or 3 groups independently selected from these groups It is a combination. Preferably, R ⁷ is _{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. Although it does not specifically limit as a combination of 2 or 3 groups independently selected from OC ₂ F ₄ , OC ₃ F ₆ and OC ₄ F _{8 , For example, -OC 2} F ₄ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₄ F ₈ -, -OC ₃ F ₆ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₃ F ₆ -, -OC ₃ F ₆ OC ₄ F ₈ -, -OC ₄ F ₈ OC ₄ F ₈ -, -OC ₄ F ₈ OC ₃ F ₆ -, -OC ₄ F ₈ OC ₂ F ₄ -, -OC ₂ F ₄ OC ₂ F ₄ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₂ F ₄ OC ₄ F ₈ -, -OC ₂ F ₄ OC ₃ F ₆ OC ₂ F ₄ -, -OC ₂ F ₄ OC ₃ F ₆ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₄ F ₈ OC ₂ F ₄ -, - OC ₃ F ₆ OC ₂ F ₄ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₂ F ₄ OC ₃ F ₆ -, -OC ₃ F ₆ OC ₃ F ₆ OC ₂ F ₄ - and -OC ₄ F ₈ OC ₂ F ₄ OC ₂ F ₄ -, and the like. The q is an integer of 2 to 100, preferably an integer of 2 to 50. In the above formula, OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F _{10 ,} and OC ₆ F ₁₂ may be linear or branched, and preferably linear. In this embodiment, PFPE ¹ is preferably -(OC ₂ F ₄ -OC ₃ F ₆ ) _q - or -(OC ₂ F ₄ -OC ₄ F ₈ ) _q -.

In the formula, Rf ¹ represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms.

The "alkyl group having 1 to 16 carbon atoms" in the alkyl group having 1 to 16 carbon atoms which may be substituted by one or more fluorine atoms may be linear or branched, preferably straight or branched. It is a C1-C6 alkyl group, especially a C1-C3 alkyl group, More preferably, it is a C1-C3 alkyl group.

Rf ¹ is preferably an alkyl group having 1 to 16 carbon atoms substituted with one or more fluorine atoms, more preferably a CF ₂ HC _1-15 fluoroalkylene group, and still more preferably a carbon number 1 group. to 16 perfluoroalkyl groups.

The perfluoroalkyl group having 1 to 16 carbon atoms may be linear or branched, and is preferably a linear or branched perfluoroalkyl group having 1 to 6 carbon atoms, particularly 1 to 3 carbon atoms, more preferably A linear perfluoroalkyl group having 1 to 3 carbon atoms, specifically -CF ₃ , -CF ₂ CF ₃ or -CF ₂ CF ₂ CF ₃ .

In the formula, R ¹ each independently represents a hydroxyl group or a hydrolyzable group at each occurrence.

The said "hydrolyzable group", when used in this specification, means the group which can detach|desorb from the main skeleton of a compound by a hydrolysis reaction. Examples of the hydrolyzable group include -OR, -OCOR, -ON=CR ₂ , -NR ₂ , -NHR, halogen (wherein R represents a substituted or unsubstituted C1-C4 alkyl group), etc. and -OR (ie, an alkoxy group) is preferable. Examples of R include unsubstituted alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group and isobutyl group; A substituted alkyl group such as a chloromethyl group is included. Among them, an alkyl group, particularly an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. Although a hydroxyl group is not specifically limited, What generated by hydrolyzing a hydrolysable group may be sufficient.

In the formula, R ² each independently represents a hydrogen atom or an alkyl group having 1 to 22 carbon atoms, preferably an alkyl group having 1 to 4 carbon atoms in each occurrence.

In the formula, ^{each occurrence of R 11} independently represents a hydrogen atom or a halogen atom. The halogen atom is preferably an iodine atom, a chlorine atom or a fluorine atom, and more preferably a fluorine atom.

In the formula, ^{each occurrence of R 12} independently represents a hydrogen atom or a lower alkyl group. The lower alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 6 carbon atoms, and examples thereof include a methyl group, an ethyl group, and a propyl group.

In the above formula, n1 is ^{an integer of 0 to 3 independently for each (-SiR 1} _n1 R ² _3-n1 ) unit, preferably 1 to 3, and more preferably 3. However, in the formula, all n1s do not become 0 at the same time. In other words, in the formula, at least one of R ¹ is present.

In the above formula, X ¹ each independently represents a single bond or a 2- to 10-valent organic group. X ¹ is a perfluoropolyether moiety (ie, Rf ¹ -PFPE ¹ part or -PFPE ¹ part - ) and a silane moiety (ie, a group attached with α and enclosed in parentheses) providing binding ability with the substrate is interpreted as a linker. Therefore, ^{any organic group may be sufficient as said X<1>} as long as the compound represented by Formula (A1) and (A2) can exist stably.

In the above formula, α is an integer from 1 to 9, and α' is an integer from 1 to 9. These α and α' may change depending on the valence of ^{X 1 .} In the formula (A1), the sum of α and α' is the same as the valence of ^{X 1 .} For example, when X ¹ is a decavalent organic group, the sum of α and α' is 10, for example, α is 9 and α' is 1, α is 5 and α' is 5, or α is 1 and α ' could be 9. In addition, when X ¹ is a divalent organic group, α and α′ are 1. In the formula (A2), α is a value obtained by subtracting 1 from the mantissa ^{of X 1 .}

Said X<^1> becomes like this. Preferably it is 2-7 valence, More preferably, it is 2-4 valence, More preferably, it is a divalent organic group.

In one embodiment, X ¹ is a divalent to tetravalent organic group, α is 1 to 3, and α′ is 1.

In another embodiment, X ¹ is a divalent organic group, α is 1, and α′ is 1. In this case, the formulas (A1) and (A2) are represented by the following formulas (A1') and (A2').

Although it does not specifically limit as an example of said X<^{1>, For example, following formula:}

-(R ³¹ ) _p' -(X ^a ) _q' -

[During the ceremony:

R ³¹ each independently represents a single bond, -(CH ₂ ) _s' - or o-, m- or p-phenylene group, preferably -(CH ₂ ) _s' -;

s' is an integer from 1 to 20, preferably an integer from 1 to 6, more preferably an integer from 1 to 3, even more preferably 1 or 2,

X ^a represents -(X ^b ) _l' -,

X ^b is each independently in each occurrence, -O-, -S-, o-, m- or p-phenylene group, -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' - group selected from the group consisting of indicate,

R ³³ in each occurrence independently represents a phenyl group, a C _1-6 alkyl group or a C _1-6 alkoxy group, preferably a phenyl group or a C _1-6 alkyl group, more preferably a methyl group,

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

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

n' in each occurrence, each independently represents an integer from 1 to 20, preferably an integer from 1 to 6, more preferably an integer from 1 to 3,

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

p' is 0, 1 or 2,

q' is 0 or 1,

Here, at least one of p' and q' is 1, and the order of existence of each repeating unit appended with p' or q' and enclosed in parentheses is arbitrary.]

and a divalent group represented by . Here, R ³¹ and X ^a (typically ^{a hydrogen atom of R 31} and X a ) are represented by one or more substituents selected from a fluorine atom, a C _1-3 alkyl group and a C _{1-3 fluoroalkyl group.} It may be substituted.

Preferably, the X ¹ is -(R ³¹ ) _p' -(X ^a ) _q' -R ³² -. R ³² represents a single bond, - (CH _{2) t '-} or o-, m- or p- represents a phenylene group, preferably - (CH _{2) t'} - a. t' is an integer of 1-20, Preferably it is an integer of 2-6, More preferably, it is an integer of 2-3. Here, R ³² (typically ^{a hydrogen atom of R 32} ) 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.}

Preferably, the X ¹ is,

single bond,

C _1-20 alkylene group,

-R ³¹ -X ^c -R ³² - or

-X ^d -R ³² -

[Wherein, R ³¹ and R ³² have the same meaning as above.]

can be

More preferably, the X ¹ is,

single bond,

C _1-20 alkylene group,

-(CH ₂ ) _s' -X ^c -,

-(CH ₂ ) _s' -X ^c -(CH ₂ ) _t' -

-X ^d - or

-X ^d -(CH ₂ ) _t' -

[Wherein, s' and t' have the same meaning as above.]

am.

In the above formula, X ^c is,

-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 ) _u' -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -,

-O-(CH ₂ ) _u' -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 ) _u' -Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ -,

-CONR ³⁴ -(CH ₂ ) _u' -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -,

-CONR ³⁴ -(CH ₂ ) _u' -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,

u' is an integer of 1 to 20, preferably an integer of 2 to 6, more preferably an integer of 2 to 3.]. X ^c is preferably -O-.

In the above formula, X ^d is,

-S-,

-C(O)O-,

-CONR ³⁴ -,

-CONR ³⁴ -(CH ₂ ) _u' -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -,

-CONR ³⁴ -(CH ₂ ) _u' -N(R ³⁴ )- or

-CONR ³⁴ -(o-, m- or p-phenylene)-Si(R ³³ ) ₂ -

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

indicates

More preferably, the X ¹ is,

single bond,

C _1-20 alkylene group,

-(CH ₂ ) _s' -X ^c -(CH ₂ ) _t' - or

-X ^d -(CH ₂ ) _t' -

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

can be

Even more preferably, the X ¹ is,

single bond,

C _1-20 alkylene group,

-(CH ₂ ) _s' -O-(CH ₂ ) _t' -,

-(CH ₂ ) _s' -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -(CH ₂ ) _t' -,

-(CH ₂ ) _s' -O-(CH ₂ ) _u' -(Si(R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ -(CH ₂ ) _t' - or

-(CH ₂ ) _s' -O-(CH ₂ ) _t' -Si(R ³³ ) ₂ -(CH ₂ ) _u' -Si(R ³³ ) ₂ -(C _v H _2v )-

[Wherein, R ³³ , m', s', t' and u' have the same meaning as above, and v is an integer of 1 to 20, preferably an integer of 2 to 6, more preferably 2 to 3 is an integer of.]

am.

In the formula, -(C _v H _2v )- may be linear or branched, for example, -CH ₂ CH ₂ -, -CH ₂ CH ₂ CH ₂ -, -CH(CH ₃ )-, —CH(CH ₃ )CH ₂ —.

The ^{group 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 (preferably a C _{1-3 perfluoroalkyl group).} .

In another embodiment, the X ¹ group includes, for example, the following groups:

[Wherein, R ⁴¹ is each independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms, or a C _1-6 alkoxy group, preferably a methyl group;

D is,

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CF ₂ O(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

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

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

is a group selected from

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

^{D binds to PFPE 1} of the molecular backbone, and E binds to the group opposite to ^{PFPE 1.]}

As a specific example of said X ^{1, For example:}

single bond,

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CH ₂ O(CH ₂ ) ₆ -,

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

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

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

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

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

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

-CH ₂ OCF ₂ CHFOCF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ -,

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

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

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

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

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ -,

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

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

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

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

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

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

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

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

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

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

-CH ₂ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-(CH ₂ ) ₅ -,

-(CH ₂ ) ₆ -,

-CO-

-CONH-

-CONH-CH ₂ -,

-CONH-(CH ₂ ) ₂ -,

-(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

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

-CONH-(CH ₂ ) ₆ -,

-CON(CH ₃ )-(CH ₂ ) ₆ -,

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

-CONH-(CH ₂ ) ₂ NH(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₆ NH(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₆ -,

-S-(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ S(CH ₂ ) ₃ -,

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

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

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

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

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

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

-C(O)O-(CH ₂ ) ₃ -,

-C(O)O-(CH ₂ ) ₆ -,

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

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

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

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

-OCH ₂ -,

-O(CH ₂ ) ₃ -,

-OCFHCF ₂ -,

and the like.

In another embodiment, X ¹ is a group represented by the formula: -(R ¹⁶ ) _x -(CFR ¹⁷ ) _y -(CH ₂ ) _z -. In the formula, x, y and z are each independently an integer of 0 to 10, the sum of x, y and z is 1 or more, and the order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula.

In the formula, R ¹⁶ is each independently an oxygen atom, phenylene, carbazolylene, -NR ²⁶ - (wherein R ²⁶ represents a hydrogen atom or an organic group) or a divalent organic group in each occurrence. . Preferably, R ¹⁶ is an oxygen atom or a divalent polar group.

Examples of the "bivalent polar group" is not particularly limited, -C (O) -, -C (= NR 27) - , and -C (O) NR ²⁷ - (in these formulas, R ²⁷ represents a hydrogen atom or a lower alkyl group represents) can be mentioned. The "lower alkyl group" is, for example, an alkyl group having 1 to 6 carbon atoms, such as methyl, ethyl, or n-propyl, and these may be substituted with one or more fluorine atoms.

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

In this embodiment, X ¹ is preferably represented by the formula: -(O) _x -(CF ₂ ) _y -(CH ₂ ) _z - (wherein x, y and z have the same meaning as above, and parentheses The order of existence of each repeating unit that is bound is arbitrary in the formula).

As the group represented by the formula: -(O) _x -(CF ₂ ) _y -(CH ₂ ) _z -, for example, -(O) _x' -(CH ₂ ) _z" -O-[(CH _{2 )} ) _z''' -O-] _z"" and -(O) _x' -(CF ₂ ) _y" -(CH ₂ ) _z" -O-[(CH ₂ ) _z''' -O-] _{z and ""} (wherein x' is 0 or 1, y", z" and z''' are each independently an integer from 1 to 10, and z"" is 0 or 1). Also, these groups bind to the ^{PFPE 1 side at the left end.}

In another preferred aspect, X ¹ is -O-CFR ¹³ -(CF ₂ ) _g -.

R ¹³ each independently represents a fluorine atom or a lower fluoroalkyl group. The lower fluoroalkyl group is, for example, a fluoroalkyl group having 1 to 3 carbon atoms, preferably a perfluoroalkyl group having 1 to 3 carbon atoms, more preferably a trifluoromethyl group, a pentafluoroethyl group, still more preferably a tri It is a fluoromethyl group.

Each of g is independently 0 or 1.

In one embodiment, R ¹³ is a fluorine atom and e is 1.

In another embodiment, X ¹ is a group represented by -X ^c -CO-NR ¹⁴ -X ^d - or -X ^c -CO-N(-X ^d -) ₂ . -X ^c -CO-NR ¹⁴ -X ^d - is a divalent group, and -X ^c -CO-N(-X ^d -) ₂ is a trivalent group.

R ¹⁴ represents a hydrogen atom, a lower alkyl group or a phenyl group. The lower alkyl group may be preferably a C _1-6 alkyl group, more preferably a C _1-3 alkyl group, and still more preferably a methyl group.

X ^c represents a single bond or a divalent organic group.

The divalent organic group in ^{X c is preferably,}

-(CR ⁸ ₂ ) _k1 -(O) _k2 -(NR ⁹ ) _k3 -

[During the ceremony:

R ⁸ is each independently a hydrogen atom or a fluorine atom;

R ⁹ each independently represents a hydrogen atom, a phenyl group or a C _1-6 alkyl group;

k1 is an integer from 1 to 20;

k2 is an integer from 0 to 10;

k3 is an integer from 0 to 10;

Here, the order of existence of each repeating unit enclosed in parentheses with k1, k2, or k3 is arbitrary in the formula.]

It may be a group represented by .

Said X ^d represents a divalent organic group.

The divalent organic group in ^{X d is preferably,}

-(CR ²⁰ ₂ ) _k4 -(O) _k5 -(NR ²¹ ) _k6 -,

[During the ceremony:

R ²⁰ is each independently a hydrogen atom or a fluorine atom;

R ²¹ each independently represents a hydrogen atom, a phenyl group, or a C _1-6 alkyl group;

k4 is an integer from 1 to 20;

k5 is an integer from 0 to 10;

k6 is an integer from 0 to 10;

Here, the order of existence of each repeating unit enclosed in parentheses with k4, k5 or k6 is arbitrary in the formula.]

It may be a group represented by .

In one embodiment, X ^c is -(CF ₂ ) _k1' - or -(CF ₂ ) _k1' -(O) _k2' -

[During the ceremony:

k1' is an integer from 1 to 6;

k2' is an integer from 1 to 3;

Here, the order of existence of each repeating unit enclosed in parentheses with k1' or k2' is arbitrary in the formula.]

ego,

X ^d is -(CH ₂ ) _k4' - or -(CH ₂ ) _k4' -O _k5' -

[During the ceremony:

k4' is an integer from 1 to 6;

k5' is an integer from 1 to 3;

Here, the order of existence of each repeating unit enclosed in parentheses with k4' or k5' is arbitrary in the formula.]

am.

In another embodiment, ^{examples of groups X 1} include the following groups:

[During the ceremony,

each R ⁴¹ is independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms, or a C _1-6 alkoxy group, preferably a methyl group;

For each X ¹ group, any few of the T are the following groups that bind to ^{PFPE 1 of the molecular backbone:}

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CF ₂ O(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

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

[ ^{Wherein, each R 42} independently represents a hydrogen atom, a C _1-6 alkyl group or a C _1-6 alkoxy group, preferably a methyl group or a methoxy group, more preferably a methyl group.]

, and some other T ^{is a carbon atom in a group opposite to PFPE 1 in the} molecular main chain (i.e., a carbon atom in the formulas (A1), (A2), (D1) and (D2), and the following formulas (B1), ( In B2), (C1) and (C2), -(CH ₂ ) _n" - (n" is an integer of 2 to 6) bonded to an Si atom), when present, the rest are each independently a methyl group; It may be a phenyl group, a C _1-6 alkoxy group, or a radical trapping group or an ultraviolet absorbing group.

The radical trapping group is not particularly limited as long as it can trap radicals generated by light irradiation. For example, benzophenones, benzotriazoles, benzoate esters, salicylic acid phenyls, crotonic acids, malonic acid esters, organo and residues of acrylates, hindered amines, hindered phenols or triazines.

The ultraviolet absorber is not particularly limited as long as it can absorb ultraviolet rays, and for example, benzotriazoles, hydroxybenzophenones, esters of substituted and unsubstituted benzoic acid or salicylic acid compounds, acrylates or alkoxycinnamates, oxa and residues of imides, oxanilides, benzoxazinones and benzoxazoles.

In a preferred aspect, as a preferred radical scavenger or ultraviolet absorber,

can be heard

In this embodiment, ^{each X 1} may independently be a 3- to 10-valent organic group.

In the above formula, t is each independently an integer of 1 to 10. In a preferred embodiment, t is an integer from 1 to 6. Another preferable aspect WHEREIN: t is an integer of 2-10, Preferably it is an integer of 2-6.

In the formula, ^{each occurrence of X 2} independently represents a single bond or a divalent organic group. X ² is preferably an alkylene group having 1 to 20 carbon atoms, more preferably -(CH ₂ ) _u - (wherein u is an integer of 0 to 2).

Preferred compounds represented by formulas (A1) and (A2) include the following formulas (A1') and (A2'):

[During the ceremony:

PFPE ¹ is each independently represented by the formula:

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

(wherein a, b, c and d are each independently an integer from 0 to 200, the sum of a, b, c and d is at least 1, appended with a subscript a, b, c, or d and enclosed in parentheses. The order of existence of each repeating unit is arbitrary in the formula)

is a group represented by;

Rf ¹ each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms in each occurrence;

R ¹ each independently represents a hydroxyl group or a hydrolyzable group in each occurrence;

R ² in each occurrence each independently represents a hydrogen atom or an alkyl group having 1 to 22 carbon atoms;

R ¹¹ in each occurrence each independently represents a hydrogen atom or a halogen atom;

R ¹² in each occurrence each independently represents a hydrogen atom or a lower alkyl group;

n1 is an integer from 1 to 3, preferably 3;

X ¹ is —O—CFR ¹³ —(CF ₂ ) _e —;

R ¹³ is a fluorine atom or a lower fluoroalkyl group;

e is 0 or 1;

X ² is —(CH ₂ ) _u —;

u is an integer from 0 to 2 (when u is 0, X ² is a single bond);

t is an integer from 1 to 10.]

is a compound represented by

The compounds represented by the formulas (A1) and (A2) are, for example, using ^{a perfluoropolyether derivative corresponding to the Rf 1} -PFPE ¹ - moiety as a raw material, and after introducing iodine at the terminal, -CH ₂ It can be obtained by reacting a vinyl monomer corresponding to ^{CR 12} (X ² -SiR ¹ _n1 R ² _{3-n1 )-.}

Formulas (B1) and (B2):

In the formulas (B1) and (B2), Rf ¹ , PFPE ¹ , R ¹ , R ² and n1 have the same meanings as those described in the formulas (A1) and (A2).

In the above formula, X ⁵ each independently represents a single bond or a 2- to 10-valent organic group. X ^{5 is a perfluoropolyether moiety (Rf 1} -PFPE ¹ part or -PFPE ¹ part) which mainly provides water repellency and surface slipperiness, etc. in the compounds represented by formulas (B1) and (B2) It is interpreted as a linker connecting the silane moiety (specifically, -SiR ¹ _n1 R ² _{3-n1 ) that provides binding ability with the substrate.} Therefore, ^{any organic group may be sufficient as said X<5>} as long as the compound represented by Formula (B1) and (B2) can exist stably.

In the above formula, β is an integer of 1 to 9, and β′ is an integer of 1 to 9. These β and β' are ^{determined according to the valence of X 3} , and in the formula (B1), the sum of β and β' is the same as the valence of ^{X 5 .} For example, when X ⁵ is a decavalent organic group, the sum of β and β' is 10, for example, β is 9 and β' is 1, β is 5 and β' is 5, or β is 1 and β ' could be 9. Further, when X ⁵ is a divalent organic group, β and β′ are 1. In formula (B2), β is a value obtained by subtracting 1 from the mantissa value ^{of X 5 .}

X ⁵ is preferably 2 to 7 valence, more preferably 2 to 4 valence, still more preferably divalent organic group.

In one embodiment, X ⁵ is a 2 to tetravalent organic group, β is 1 to 3, and β′ is 1.

In another embodiment, X ⁵ is a divalent organic group, β is 1, and β′ is 1. In this case, the formulas (B1) and (B2) are represented by the following formulas (B1') and (B2').

The examples of the X ^5, but not particularly limited, and examples thereof include those described with respect to X ¹ of the same.

In one preferred embodiment, X ⁵ may be a group represented by -X ^c -CO-NR ¹⁴ -X ^d - or -X ^c -CO-N(-X ^d -) _{2 .} X ^c , X ^d and R ¹⁴ are at the same position as described for ^{X 1 above.}

Preferred specific X ⁵ is,

single bond,

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CH ₂ O(CH ₂ ) ₆ -,

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

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

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

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

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

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

-CH ₂ OCF ₂ CHFOCF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ -,

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

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

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

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

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ -,

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

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

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

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

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

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

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

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

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

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

-CH ₂ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-(CH ₂ ) ₅ -,

-(CH ₂ ) ₆ -,

-CO-

-CONH-

-CONH-CH ₂ -,

-CONH-(CH ₂ ) ₂ -,

-(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

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

-CONH-(CH ₂ ) ₆ -,

-CON(CH ₃ )-(CH ₂ ) ₆ -,

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

-CONH-(CH ₂ ) ₂ NH(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₆ NH(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₆ -,

-S-(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ S(CH ₂ ) ₃ -,

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

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

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

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

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

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

-C(O)O-(CH ₂ ) ₃ -,

-C(O)O-(CH ₂ ) ₆ -,

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

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

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

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

-OCH ₂ -,

-O(CH ₂ ) ₃ -,

-OCFHCF ₂ -,

and the like.

Preferred compounds represented by formulas (B1) and (B2) include the following formulas (B1') and (B2'):

[During the ceremony:

PFPE ¹ is each independently represented by the formula:

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

(wherein a, b, c and d are each independently an integer from 0 to 200, the sum of a, b, c and d is at least 1, appended with a subscript a, b, c, or d and enclosed in parentheses. The order of existence of each repeating unit is arbitrary in the formula)

is a group represented by;

Rf ¹ each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms in each occurrence;

R ¹ each independently represents a hydroxyl group or a hydrolyzable group in each occurrence;

R ² in each occurrence each independently represents a hydrogen atom or an alkyl group having 1 to 22 carbon atoms;

n1 is an integer from 1 to 3, preferably 3;

X ⁵ is -CH ₂ O(CH ₂ ) ₂ -, -CH ₂ O(CH ₂ ) ₃ - or -CH ₂ O(CH ₂ ) ₆ -]

is a compound represented by

The compound represented by the said formulas (B1) and (B2) can be manufactured by a well-known method, for example, the method of patent document 1, or its improvement method. For example, the compound represented by the formulas (B1) and (B2) has the following formulas (B1-4) or (B2-4):

[During the ceremony:

PFPE ¹ is each independently represented by the formula:

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

(wherein a, b, c and d are each independently an integer from 0 to 200, the sum of a, b, c and d is at least 1, appended with a subscript a, b, c, or d and enclosed in parentheses. The order of existence of each repeating unit is arbitrary in the formula)

is a group represented by;

Rf ¹ each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms in each occurrence;

X ^5' each independently represents a single bond or a 2- to 10-valent organic group;

each β is independently an integer from 1 to 9;

each β′ is independently an integer from 1 to 9;

R ⁹² is a single bond or a divalent organic group.]

The compound represented by HSiM ₃ (wherein, M is each independently a halogen atom, R ¹ or R ² , R ¹ is each independently a hydroxyl group or a hydrolyzable group in each occurrence, R ² is At each occurrence, each independently reacts with a hydrogen atom or an alkyl group having 1 to 22 carbon atoms), and if necessary, the halogen atom ^{is converted into R 1} or R ² to formula (B1") or (B2" ):

[wherein, PFPE ¹ , Rf ¹ , X ⁵ ', β, β' and R ⁹² have the same meaning as above;

n1 is an integer from 0 to 3.]

It can be obtained as a compound represented by

In the formula (B1") or (B2"), ^{the moiety from X 5'} to R ⁹² -CH ₂ CH ₂ - corresponds to ^{X 5} in the formula (B1) or (B2).

Formulas (C1) and (C2):

In the formulas (C1) and (C2), Rf ¹ and PFPE ¹ have the same meanings as those described in the formulas (A1) and (A2).

In the above formula, X ⁷ each independently represents a single bond or a 2- to 10-valent organic group. X ^{7 is a perfluoropolyether moiety (Rf 1} -PFPE ¹ part or -PFPE ¹ part) that mainly provides water repellency and surface slip property, etc. in the compounds represented by formulas (C1) and (C2) It is interpreted as a linker connecting the ^{silane moiety (specifically, -SiR a} _k1 R ^b ₁₁ R ^c _m1 group) that provides binding ability with the substrate. Therefore, ^{any organic group may be sufficient as said X<7>} as long as the compound represented by Formula (C1) and (C2) can exist stably.

In the above formula, γ is an integer of 1 to 9, and γ′ is an integer of 1 to 9. These γ and γ' are ^{determined according to the valence of X 7} , and in the formula (C1), the sum of γ and γ' is the same as the valence of ^{X 7 .} For example, when X ⁷ is a divalent organic group, the sum of γ and γ' is 10, for example, γ is 9 and γ' is 1, γ is 5 and γ' is 5, or γ is 1 and γ ' could be 9. Further, when X ⁷ is a divalent organic group, γ and γ′ are 1. In formula (C1), γ is a value obtained by subtracting 1 from the mantissa value ^{of X 7 .}

X ⁷ is preferably 2 to 7 valence, more preferably 2 to 4 valence, still more preferably divalent organic group.

In one embodiment, X ⁷ is a divalent to tetravalent organic group, γ is 1 to 3, and γ′ is 1.

In another embodiment, X ⁷ is a divalent organic group, γ is 1, and γ′ is 1. In this case, the formulas (C1) and (C2) are represented by the following formulas (C1') and (C2').

Examples of the X ^7, but not particularly limited, and examples thereof include those described with respect to X ¹ of the same.

In one preferred embodiment, X ⁵ may be a group represented by -X ^c -CO-NR ¹⁴ -X ^d - or -X ^c -CO-N(-X ^d -) _{2 .} X ^c and X ^d are at the same position as described for ^{X 1 above.}

Preferred specific X ⁷ is,

single bond,

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CH ₂ O(CH ₂ ) ₆ -,

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

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

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

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

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

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

-CH ₂ OCF ₂ CHFOCF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ -,

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

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

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

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

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ -,

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

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

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

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

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

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

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

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

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

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

-CH ₂ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-(CH ₂ ) ₅ -,

-(CH ₂ ) ₆ -,

-CO-

-CONH-

-CONH-CH ₂ -,

-CONH-(CH ₂ ) ₂ -,

-(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

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

-CONH-(CH ₂ ) ₆ -,

-CON(CH ₃ )-(CH ₂ ) ₆ -,

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

-CONH-(CH ₂ ) ₂ NH(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₆ NH(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₆ -,

-S-(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ S(CH ₂ ) ₃ -,

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

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

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

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

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

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

-C(O)O-(CH ₂ ) ₃ -,

-C(O)O-(CH ₂ ) ₆ -,

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

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

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

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

-OCH ₂ -,

-O(CH ₂ ) ₃ -,

-OCFHCF ₂ -,

and the like.

In the above formula, each occurrence of ^{R a independently represents -Z 1} -SiR ⁷¹ _p1 R ⁷² _q1 R ⁷³ _r1 .

In the formula, Z ¹ each independently represents an oxygen atom or a divalent organic group at each occurrence.

Z ¹ is preferably a divalent organic group, including those that form a siloxane bond with ^a terminal Si atom (Si atom to which R a is bonded) of the molecular main chain in Formula (C1) or Formula (C2) I never do that.

Z ¹ is preferably a C _1-6 alkylene group, -(CH ₂ ) _g -O-(CH ₂ ) _h - (wherein g is an integer of 1 to 6, h is an integer of 1 to 6 integer) or -phenylene-(CH ₂ ) _i - (wherein i is an integer of 0 to 6), and more preferably a C _1-3 alkylene group. These groups may be substituted with one or more substituents selected from, for example, a fluorine atom, a C _1-6 alkyl group, a C _2-6 alkenyl group, and a C _{2-6 alkynyl group.}

In the formula, R ⁷¹ each independently represents ^{R a' in each occurrence.} R ^a' has the same meaning as ^{R a .}

R ^a Among them, Si connected in a straight chain through the ^{Z 1 group is at most 5.} That is, in R ^a , when at least one ^{R 71 is present, R a} Although ^{two or more Si atoms connected linearly via Z 1} group exist in the composition, the number of Si atoms linearly connected via these Z groups is at most 5. In addition, "the number of Si atoms connected in a straight chain through ^{a Z group among R a" means R a} It becomes equal to the number of repetitions of ^{-Z 1} -Si- connected in a straight chain in the middle.

For example, R ^a An ^{example in which Si atoms are connected via Z 1} group (hereinafter simply referred to as "Z") is shown.

In the above formula, * means a site bonded to Si of the main chain, ... In silver, a predetermined group other than ZSi is bonded, that is, all three bonding hands are bonded to the Si atom. In the case of , it means the end point of the repetition of ZSi. In addition, the number on the right shoulder of Si means the number of appearances of Si connected in linear form via the Z group counted from *. That is, in the chain in which the ZSi repetition is terminated with ^{Si 2} , "the number of Si atoms connected in a straight chain through the Z ^{1 group among R a} " is two, and, similarly, the ZSi repetition is performed with ^{Si 3} , Si ⁴ and Si ^{5 .} As for the terminated chains, "the number of Si atoms connected in a straight chain through the Z ^{1 group among R a" is 3, 4, and 5, respectively.} Further, as is clear from the above formula, ^{there are a plurality of ZSi chains in R a} , but all of them do not have to be the same length and may each have an arbitrary length.

In a preferred embodiment, as shown below, " ^{the number of Si atoms connected in a straight chain through a} Z ¹ group in R a" is one (left formula) or two (right formula) in all chains. )am.

In one embodiment, the number of Si atoms connected in a straight chain through the Z group in ^{R a is 1 or 2, preferably 1 .}

In the formula, R ⁷² each independently represents a hydroxyl group or a hydrolyzable group at each occurrence.

The "hydrolyzable group" as used herein means a group capable of undergoing a hydrolysis reaction. Examples of the hydrolyzable group include -OR, -OCOR, -ON=C(R) ₂ , -N(R) ₂ , -NHR, halogen (wherein R is a substituted or unsubstituted C1-C4 group) An alkyl group is shown), etc. are mentioned, Preferably it is -OR (alkoxy group). Examples of R include unsubstituted alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group and isobutyl group; A substituted alkyl group such as a chloromethyl group is included. Among them, an alkyl group, particularly an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. Although a hydroxyl group is not specifically limited, What generated by hydrolyzing a hydrolysable group may be sufficient.

Preferably, R ⁷² is -OR (wherein R represents a substituted or unsubstituted C _1-3 alkyl group, more preferably a methyl group).

In the formula, ^{each occurrence of R 73} independently represents a hydrogen atom or a lower alkyl group. The lower alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 6 carbon atoms, still more preferably a methyl group.

wherein, at each occurrence, each independently represents an integer from 0 to 3; q1 is, for each occurrence, each independently an integer from 0 to 3; r1 is each independently an integer of 0-3 in each occurrence. However, the sum of p1, q1 and r1 is 3.

In a preferred embodiment, R ^{a (When} the R ^{a 'do} not exist, R ^a) of the terminal R ^a according to, wherein q1 is preferably 2 or more, for example 2 or 3, more preferably 3.

In a preferred embodiment, at least one terminal portion of ^{R a is -Si(-Z 1} -SiR ⁷² _q R ⁷³ _r ) ₂ or -Si(-Z ¹ -SiR ⁷² _q R ⁷³ _r ) ₃ , preferably -Si(-Z ¹ -SiR ⁷² _q R ⁷³ _r ) ₃ . In the formula, the unit of (-Z ¹ -SiR ⁷² _q R ⁷³ _r ) is preferably (-Z ¹ -SiR ⁷² ₃ ). In a more preferred embodiment, ^{the terminal portions of R a} may be all -Si(-Z ¹ -SiR ⁷² _q R ⁷³ _r ) ₃ , preferably -Si(-Z ¹ -SiR ⁷² ₃ ) ₃ .

In the formulas (C1) and (C2), at least one R ⁷² is present.

In the formula, ^{each occurrence of R b} independently represents a hydroxyl group or a hydrolyzable group.

R ^b is preferably a hydroxyl group, -OR, -OCOR, -ON=C(R) ₂ , -N(R) ₂ , -NHR, halogen (wherein R is a substituted or unsubstituted C1 to 4 alkyl groups), and preferably -OR. R is an unsubstituted alkyl group such as a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, or an isobutyl group; A substituted alkyl group such as a chloromethyl group is included. Among them, an alkyl group, particularly an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. Although a hydroxyl group is not specifically limited, A hydrolyzable group may be what hydrolyzed and generate|occur|produced. More preferably, R ^c is -OR (wherein R represents a substituted or unsubstituted C _1-3 alkyl group, more preferably a methyl group).

In the formula, ^{each occurrence of R c} independently represents a hydrogen atom or a lower alkyl group. The lower alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 6 carbon atoms, still more preferably a methyl group.

wherein k1 is, independently for each occurrence, an integer from 0 to 3; l1 is, for each occurrence, each independently an integer from 0 to 3; m1 is an integer from 0 to 3 each independently in each occurrence. However, the sum of k1, l1 and m1 is 3.

The compounds represented by the formulas (C1) and (C2) are, for example, using ^{a perfluoropolyether derivative corresponding to the Rf 1} -PFPE ¹ - moiety as a raw material, and after introducing a hydroxyl group at the terminal, unsaturated at the terminal It can be obtained by introducing a group having a bond, reacting the group having an unsaturated bond with a silyl derivative having a halogen atom, and introducing a hydroxyl group at the terminal to this silyl group, and reacting the introduced group having an unsaturated bond with a silyl derivative. For example, it can be obtained as follows.

Preferred compounds represented by formulas (C1) and (C2) include the following formulas (C1″) and (C2″):

[During the ceremony:

PFPE ¹ is each independently represented by the formula:

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

(wherein a, b, c and d are each independently an integer from 0 to 200, the sum of a, b, c and d is at least 1, appended with a subscript a, b, c, or d and enclosed in parentheses. The order of existence of each repeating unit is arbitrary in the formula)

is a group represented by;

Rf ¹ each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms in each occurrence;

X ⁷ represents —CH ₂ O(CH ₂ ) ₂ —, —CH ₂ O(CH ₂ ) ₃ — or —CH ₂ O(CH ₂ ) ₆ —;

R ^a represents, independently for each occurrence, -Z ¹ -SiR ⁷¹ _p1 R ⁷² _q1 R ⁷³ _r1 ;

Z ¹ represents a C _1-6 alkylene group;

R ⁷¹ at each occurrence, each independently, represents ^{R a′;}

R ^a' has the same meaning as ^{R a ;}

R ^a Among them, the number of Si connected in a straight chain through the ^{Z 1 group is at most 5;}

R ⁷² in each occurrence each independently represents a hydroxyl group or a hydrolyzable group;

R ⁷³ in each occurrence each independently represents a hydrogen atom or a lower alkyl group;

p1 for each occurrence, each independently, is an integer from 0 to 2;

q1 for each occurrence is each independently an integer from 1 to 3, preferably 3;

r1 for each occurrence, each independently, is an integer from 0 to 2;

However, in one R ^a , the sum of p1, q1 and r1 is 3.]

is a compound represented by

The compounds represented by the formulas (C1) and (C2) can be produced, for example, as follows. Formula (C1-4) or (C2-4):

[During the ceremony:

PFPE ¹ is each independently represented by the formula:

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

(wherein a, b, c and d are each independently an integer from 0 to 200, the sum of a, b, c and d is at least 1, appended with a subscript a, b, c, or d and enclosed in parentheses. The order of existence of each repeating unit is arbitrary in the formula)

is a group represented by;

Rf ¹ each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms in each occurrence;

X ⁷ ′ each independently represents a single bond or an organic group having a value of 2 to 10;

each γ is independently an integer from 1 to 9;

each γ′ is independently an integer from 1 to 9;

R ⁹² is a single bond or a divalent organic group.]

The compound represented by HSiR ⁹³ _k1 R ^b _l1 R ^c _m1 (wherein R ⁹³ is a halogen atom, for example, a fluorine atom, a chlorine atom, a bromine atom or an iodine atom, preferably a chlorine atom, and R ^b is At each occurrence, each independently represents a hydroxyl group or a hydrolyzable group, R ^c each independently represents a hydrogen atom or a lower alkyl group at each occurrence, k1 is an integer of 1 to 3, and l1 and m1 are each independently , which is an integer of 0 to 2, and the sum of k1, l1 and m1 is 3) by reacting with a compound represented by the formula (C1-5) or (C2-5):

[Wherein, Rf ¹ , PFPE ¹ , R ⁹² , R ⁹³ , R ^b , R ^c , γ, γ', X ^7' , k1, 11 and m1 have the same meanings as above.]

to obtain a compound represented by

The compound represented by the obtained formula (C1-5) or (C2-5) is reacted with Hal-JR ⁸⁴ -CH=CH ₂ (wherein Hal is a halogen atom (eg, I, Br, Cl, F, etc.) , J represents Mg, Cu, Pd or Zn, and R ⁹⁴ represents a single bond or a divalent organic group) by reacting with a compound represented by the formula (C1-6) or (C2-6):

[Wherein, Rf ¹ , PFPE ¹ , R ⁹² , R ⁹⁴ , R ^b , R ^c , γ, γ', X ^7' , k1, 11 and m1 have the same meanings as above.]

to obtain a compound represented by

The compound represented by the obtained formula (C1-6) or (C2-6) is HSiM ₃ (wherein, M is each independently a halogen atom, R ⁷² or R ⁷³ , and R ⁷² is each independently in each occurrence , represents a hydroxyl group or a hydrolyzable group, and R ⁷³ at each occurrence independently represents a hydrogen atom or a lower alkyl group), and if necessary, the halogen atom is converted into ^{R 72} or R ^{73 ,} , the formula (C1''') or (C2'''):

[wherein, Rf ¹ , PFPE ¹ , R ⁷² , R ⁷³ , R ⁹² , R ⁹⁴ , R ^b , R ^c , γ, γ′, X ^7′ , k1 , 11 and m1 have the same meanings as above;

q1 is, for each occurrence, each independently an integer from 1 to 3;

r1 is, each independently, an integer from 0 to 2 for each occurrence.]

The compound represented by can be obtained.

In the formula (C1''') or (C2'''), ^{the moiety from X 7'} to R ⁹² -CH ₂ CH ₂ - corresponds to ^{X 7} in the formula (C1) or (C2), , -R ⁹⁴ -CH ₂ CH ₂ - corresponds to Z in the formula (C1) or (C2).

Formulas (D1) and (D2):

In the formulas (D1) and (D2), Rf ¹ and PFPE ¹ have the same meanings as those described in the formulas (A1) and (A2).

In the above formula, X ⁹ each independently represents a single bond or a 2- to 10-valent organic group. X is a perfluoropolyether moiety (ie, Rf ¹ -PFPE ¹ part or -PFPE ¹ part ) and a moiety that provides binding ability with a substrate (ie, a group attached with δ and enclosed in parentheses) is interpreted as a linker. Therefore, any organic group may be sufficient as said X as long as the compound represented by Formula (D1) and (D2) can exist stably.

In the above formula, δ is an integer from 1 to 9, and δ' is an integer from 1 to 9. These δ and δ' may vary depending on the valence of X. In the formula (D1), the sum of δ and δ' is the same as the valence of X. For example, when X is a decavalent organic group, the sum of δ and δ' is 10, for example, δ is 9, δ' is 1, δ is 5, δ' is 5, or δ is 1 and δ' can be 9. Further, when X ⁹ is a divalent organic group, δ and δ′ are 1. In formula (D2), δ is a value obtained by subtracting 1 from the mantissa ^{of X 9 .}

X ⁹ is preferably 2 to 7 valence, more preferably 2 to 4 valence, and still more preferably a divalent organic group.

In one embodiment, X ⁹ is a 2 to tetravalent organic group, δ is 1 to 3, and δ′ is 1.

In another embodiment, X ⁹ is a divalent organic group, δ is 1, and δ′ is 1. In this case, the formulas (D1) and (D2) are represented by the following formulas (D1') and (D2').

Examples of the X ^9, but not particularly limited, and examples thereof include those described with respect to X ¹ of the same.

In one preferred embodiment, X ⁵ may be a group represented by -X ^c -CO-NR ¹⁴ -X ^d - or -X ^c -CO-N(-X ^d -) _{2 .} X ^c and X ^d are at the same position as described for ^{X 1 above.}

Preferred specific X ⁹ is,

single bond,

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CH ₂ O(CH ₂ ) ₆ -,

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

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

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

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

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

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

-CH ₂ OCF ₂ CHFOCF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ -,

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

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

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

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

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ -,

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

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

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

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

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

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

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

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

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

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

-CH ₂ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-(CH ₂ ) ₅ -,

-(CH ₂ ) ₆ -,

-CO-

-CONH-

-CONH-CH ₂ -,

-CONH-(CH ₂ ) ₂ -,

-(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

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

-CONH-(CH ₂ ) ₆ -,

-CON(CH ₃ )-(CH ₂ ) ₆ -,

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

-CONH-(CH ₂ ) ₂ NH(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₆ NH(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₆ -,

-S-(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ S(CH ₂ ) ₃ -,

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

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

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

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

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

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

-C(O)O-(CH ₂ ) ₃ -,

-C(O)O-(CH ₂ ) ₆ -,

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

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

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

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

-OCH ₂ -,

-O(CH ₂ ) ₃ -,

-OCFHCF ₂ -,

and the like.

In the above formula, R ^{d represents -Z 2} -CR ⁸¹ _p2 R ⁸² _q2 R ⁸³ _r2 independently of each occurrence.

In the formula, Z ² each independently represents an oxygen atom or a divalent organic group at each occurrence.

Z ² is preferably a C _1-6 alkylene group, -(CH ₂ ) _g -O-(CH ₂ ) _h - (wherein g is an integer of 0 to 6, for example, an integer of 1 to 6) and h is an integer of 0 to 6, for example, an integer of 1 to 6) or -phenylene-(CH ₂ ) _i - (wherein, i is an integer of 0 to 6), more preferably It is a C _1-3 alkylene group. These groups may be substituted with one or more substituents selected from, for example, a fluorine atom, a C _1-6 alkyl group, a C _2-6 alkenyl group, and a C _{2-6 alkynyl group.}

In the formula, R ⁸¹ each independently represents ^{R d' in each occurrence.} R ^d' has the same meaning as ^{R d .}

Among R ^d , C is at most 5 connected in a straight chain via a ^{Z 2 group.} That is, in R ^d , when at least one ^{R 81} is present, there are two or more C atoms linearly connected through a Z ^{2 group in R d , but C linearly connected through the Z 2} group The maximum number of atoms is 5. In addition, "in R ^d The number of C atoms connected linearly through the Z ² group” is the same as the number of repetitions of ^{-Z 2} -C- linearly connected in ^{R d .} This is the same as the description regarding ^{R a} in the formulas (C1) and (C2).

In a preferred embodiment, "the number of C atoms connected in a straight chain through a Z ^{2 group in R d} " is one (left formula) or two (right formula) in all chains.

In one embodiment, in R ^d The number of C atoms connected in a straight chain via the Z ^{2 group is 1 or 2, preferably 1.}

In the formula, R ⁸² represents -Y-SiR ⁸⁵ _n2 R ⁸⁶ _3-2n .

Y each independently represents a divalent organic group in each occurrence.

In a preferred embodiment, Y is a C _1-6 alkylene group, -(CH ₂ ) _g' -O-(CH ₂ ) _h' - (wherein g' is an integer from 0 to 6, for example from 1 to 6 is an integer of, h' is an integer from 0 to 6, for example, an integer from 1 to 6), or -phenylene-(CH ₂ ) _i' - (wherein i' is an integer from 0 to 6) am. These groups may be substituted with one or more substituents selected from, for example, a fluorine atom, a C _1-6 alkyl group, a C _2-6 alkenyl group, and a C _{2-6 alkynyl group.}

In one embodiment, Y may be a C _1-6 alkylene group, -O-(CH ₂ ) _h' - or -phenylene-(CH ₂ ) _i' -. When Y is the above group, light resistance, particularly UV resistance, can be higher.

In ^{each occurrence, R 5} each independently represents a hydroxyl group or a hydrolyzable group.

The "hydrolyzable group" as used herein means a group capable of undergoing a hydrolysis reaction. Examples of the hydrolyzable group include -OR, -OCOR, -ON=C(R) ₂ , -N(R) ₂ , -NHR, halogen (wherein R is a substituted or unsubstituted C1-C4 group) An alkyl group is shown), etc. are mentioned, Preferably it is -OR (alkoxy group). Examples of R include unsubstituted alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group and isobutyl group; A substituted alkyl group such as a chloromethyl group is included. Among them, an alkyl group, particularly an unsubstituted alkyl group, is preferable, and a methyl group or an ethyl group is more preferable. Although a hydroxyl group is not specifically limited, What generated by hydrolyzing a hydrolysable group may be sufficient.

Preferably, R ⁸⁵ is -OR (wherein R represents a substituted or unsubstituted C _1-3 alkyl group, more preferably an ethyl group or a methyl group, particularly a methyl group).

In ^{each occurrence, R 86} each independently represents a hydrogen atom or a lower alkyl group. The lower alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 6 carbon atoms, still more preferably a methyl group.

n2 represents an integer of 1-3 independently for each (-Y-SiR ⁸⁵ _n2 R ⁸⁶ _3-n2 ) unit, Preferably it is 2 or 3, More preferably, it is 3.

In ^{each occurrence, R 83} each independently represents a hydrogen atom or a lower alkyl group. The lower alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 6 carbon atoms, still more preferably a methyl group.

where p2 is each independently an integer from 0 to 3 for each occurrence; q2 is each independently an integer from 0 to 3 for each occurrence; r2 is each independently, for each occurrence, 0 to 3 is the integer of provided that the sum of p2, q2 and r2 is 3.

In a preferred embodiment, R ^'(if no R ^d' present, R ^{d) d} of R ^d of the terminal according to the q2 is preferably 2 or more, for example 2 or 3, more preferably 3 is

In a preferred embodiment, ^{at least one terminal of R d} is -C(-Y-SiR ⁸⁵ _q2 R ⁸⁶ _r2 ) ₂ or -C(-Y-SiR ⁸⁵ _q2 R ⁸⁶ _r2 ) ₃ , preferably -C (-Y-SiR ⁸⁵ _q2 R ⁸⁶ _r2 ) ₃ . In the formula, the unit of (-Y-SiR ⁸⁵ _q2 R ⁸⁶ _r2 ) is preferably (-Y-SiR ⁸⁵ ₃ ). In a more preferred embodiment ^{, all of the terminals of R d} may be -C(-Y-SiR ⁸⁵ _q2 R ⁸⁶ _r2 ) ₃ , preferably -C(-Y-SiR ⁸⁵ ₃ ) ₃ .

In the above formula, ^{each occurrence of R e} independently represents -Y-SiR ⁸⁵ _n2 R ⁸⁶ _3-n2 . Here, Y, R ⁸⁵ , R ⁸⁶ and n2 have the same meanings as described for ^{R 82 above.}

In the formula, ^{each occurrence of R f} independently represents a hydrogen atom or a lower alkyl group. The lower alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 6 carbon atoms, still more preferably a methyl group.

where k2 is, independently for each occurrence, an integer from 0 to 3; l2 for each occurrence, each independently, is an integer from 0 to 3; m2 is an integer from 0 to 3, each independently in each occurrence. However, the sum of k2, l2 and m2 is 3.

In one embodiment, at least one k2 is 2 or 3, preferably 3.

In one embodiment, k2 is 2 or 3, preferably 3.

In one embodiment, l2 is 2 or 3, preferably 3.

In the formulas (D1) and (D2), at least one q2 is 2 or 3, or at least one 1 is 2 or 3. That is, in the formula, there are at least two -Y-SiR ⁸⁵ _n2 R ⁸⁶ _3-n2 groups.

The perfluoro (poly) ether group-containing silane compound represented by Formula (D1) or Formula (D2) can be manufactured by combining a well-known method. For example, the compound represented by the formula (D1') in which X is divalent is not limited, but can be produced as follows.

To the polyhydric alcohol represented by HO-XC(YOH) ₃ (wherein X and Y are each independently a divalent organic group), a group containing a double bond (preferably allyl) and a halogen (preferably allyl) bromo) by introducing Hal-XC(YOR-CH=CH ₂ ) ₃ (wherein Hal is a halogen, for example, Br, and R is a divalent organic group, for example, an alkylene group) A halide containing a double bond is obtained. Then, a halogen at the terminal is reacted with an alcohol containing a perfluoropolyether group represented by ^{R PFPE} -OH (wherein R ^{PFPE is a group containing a perfluoropolyether group), and R PFPE} -OXC (YOR- CH=CH ₂ ) ₃ is obtained. Then, by the -CH = CH ₂ in the terminal, HSiCl ₃ and an alcohol or HSiR ⁸⁵ _3, and the ^{reaction, R PFPE -OXC (YOR-CH} 2 -CH 2 -SiR 85 3) it is possible to obtain a _3.

The perfluoro (poly) ether group-containing silane compounds represented by the formulas (A1), (A2), (B1), (B2), (C1), (C2), (D1) and (D2) are particularly Although not limited, it may have a number average molecular weight of ^{5×10 2} to 1×10 ^{5 .} The number average molecular weight may be preferably 1,000 to 30,000, more preferably 2,000 to 15,000, and still more preferably 3,000 to 8,000.

In addition, in this invention, "number average molecular weight" is ^{measured by 19} F-NMR.

Next, the perfluoro (poly) ether modified compound represented by the said formula (E1) is demonstrated.

In the above formula, PFPE ² is a perfluoro (poly) ether group similar to that of PFPE ^{1 described above, and each independently represents a formula:}

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

is a group represented by In the formula, a, b, c, d, e and f are each independently an integer of 0 or more and 200 or less, 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 or more and 100 or less. Preferably, the sum of a, b, c, d, e and f is 5 or more, More preferably, it is 10 or more, for example, 10 or more and 100 or less. In addition, the order of existence of each repeating unit enclosed in parentheses with a, b, c, d, e, or f is arbitrary in the formula.

Although these repeating units may be linear or branched, they are preferably linear. For example, -(OC ₆ F ₁₂ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ CF ₂ CF ₂ )-, -( OCF ₂ CF(CF ₃ )CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ CF(CF ₃ )CF ₂ ) -, -(OCF ₂ CF _{2 CF 2} CF ₂ CF ₂ CF(CF ₃ ))- may be used, but is preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₅ F ₁₀ )- is, -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ ) CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ )CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ CF 2 CF(CF ₃ ))-, etc. may be used, but preferably -(OCF ₂ CF). ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₄ F ₈ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ )CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ ))-, -(OC(CF ₃ ) ₂ CF ₂ )-, -(OCF ₂ C(CF ₃ ) ₂ )-, -(OCF(CF ₃ )CF(CF) ₃ ))-, -(OCF(C ₂ F ₅ )CF ₂ )- and -(OCF ₂ CF(C ₂ F ₅ ))- may be any, but preferably -(OCF ₂ CF ₂ CF ₂ CF) ₂ )- is. -(OC ₃ F ₆ )- may be any of -(OCF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ )- and -(OCF ₂ CF(CF ₃ ))-, Preferably -(OCF ₂ CF ₂ CF ₂ )-. Further, -(OC ₂ F ₄ )- may be any of -(OCF ₂ CF ₂ )- and -(OCF(CF ₃ ))-, but is preferably -(OCF ₂ CF ₂ )-.

In one embodiment, the PFPE ² is -(OC ₃ F ₆ ) _d - (wherein d is an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less) am. Preferably, PFPE ² is -(OCF ₂ CF ₂ CF ₂ ) _d - (wherein d is an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less) or -(OCF(CF ₃ )CF ₂ ) _d - (wherein d is an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less). More preferably, PFPE ² is -(OCF ₂ CF ₂ CF ₂ ) _d - (wherein d is an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less) )am.

In another embodiment, PFPE ² is -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (wherein c and d are each independently is an integer of 0 or more and 30 or less, e and f are each independently an integer of 1 or more and 200 or less, preferably 5 or more and 200 or less, more preferably 10 or more and 200 or less, and the subscript c, d, e or f and the order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula). Preferably PFPE ² is -(OCF ₂ CF ₂ CF ₂ CF ₂ ) _c -(OCF ₂ CF ₂ CF ₂ ) _d -(OCF ₂ CF ₂ ) _e -(OCF ₂ ) _f -. In one embodiment, PFPE ² is -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (wherein e and f are each independently 1 or more and 200 or less, preferably 5 or more and 200 or less, More preferably, it is an integer of 10 or more and 200 or less, and the order of existence of each repeating unit enclosed in parentheses with a subscript e or f may be arbitrary in the formula).

In another embodiment, PFPE ² is a group represented by -(R ⁶ -R ⁷ ) _{q -.} In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ , preferably OC ₂ F ₄ . wherein 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 2 or 3 groups independently selected from these groups It is a combination. Preferably, R ⁷ is _{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. Although it does not specifically limit as a combination of 2 or 3 groups independently selected from OC ₂ F ₄ , OC ₃ F ₆ and OC ₄ F _{8 , For example, -OC 2} F ₄ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₄ F ₈ -, -OC ₃ F ₆ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₃ F ₆ -, -OC ₃ F ₆ OC ₄ F ₈ -, -OC ₄ F ₈ OC ₄ F ₈ -, -OC ₄ F ₈ OC ₃ F ₆ -, -OC ₄ F ₈ OC ₂ F ₄ -, -OC ₂ F ₄ OC ₂ F ₄ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₂ F ₄ OC ₄ F ₈ -, -OC ₂ F ₄ OC ₃ F ₆ OC ₂ F ₄ -, -OC ₂ F ₄ OC ₃ F ₆ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₄ F ₈ OC ₂ F ₄ -, - OC ₃ F ₆ OC ₂ F ₄ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₂ F ₄ OC ₃ F ₆ -, -OC ₃ F ₆ OC ₃ F ₆ OC ₂ F ₄ - and -OC ₄ F ₈ OC ₂ F ₄ OC ₂ F ₄ -, and the like. The q is an integer of 2 to 100, preferably an integer of 2 to 50. In the above formula, OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F _{10 ,} and OC ₆ F ₁₂ may be linear or branched, and preferably linear. In this embodiment, PFPE ² is preferably -(OC ₂ F ₄ -OC ₃ F ₆ ) _q - or -(OC ₂ F ₄ -OC ₄ F ₈ ) _q -.

In the formula, Rf ² represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms.

The "alkyl group having 1 to 16 carbon atoms" in the alkyl group having 1 to 16 carbon atoms which may be substituted by one or more fluorine atoms may be linear or branched, preferably straight or branched. It is a C1-C6 alkyl group, especially a C1-C3 alkyl group, More preferably, it is a C1-C3 alkyl group.

Rf ² is preferably an alkyl group having 1 to 16 carbon atoms substituted with one or more fluorine atoms, more preferably a CF ₂ HC _1-15 fluoroalkylene group, and still more preferably a C 1 group. to 16 perfluoroalkyl groups.

The perfluoroalkyl group having 1 to 16 carbon atoms may be linear or branched, and is preferably a linear or branched perfluoroalkyl group having 1 to 6 carbon atoms, particularly 1 to 3 carbon atoms, more preferably A linear perfluoroalkyl group having 1 to 3 carbon atoms, specifically -CF ₃ , -CF ₂ CF ₃ or -CF ₂ CF ₂ CF ₃ .

In the above formula, Z ² represents a single bond or a divalent organic group.

The divalent organic group in ^{Z 2 is preferably}

-(CR ¹⁸ ₂ ) _k7 -(O) _k8 -(NR ¹⁹ ) _k9 -,

[During the ceremony:

each R ¹⁸ is independently a hydrogen atom or a fluorine atom;

R ¹⁹ each independently represents a hydrogen atom, a phenyl group, or a C _1-6 alkyl group;

k7 is an integer from 1 to 20;

k8 is an integer from 0 to 10;

k9 is an integer from 0 to 10;

Here, the order of existence of each repeating unit enclosed in parentheses with k7, k8 or k9 is arbitrary in the formula.]

am.

Preferred Z ² is,

-(CF ₂ ) _k7' - or -(CF ₂ ) _k7' -(O) _k8' -

[During the ceremony:

k7' is an integer from 1 to 6;

k8' is an integer from 1 to 3;

Here, the order of existence of each repeating unit enclosed in parentheses with k7' or k8' is arbitrary in the formula.]

am.

Wherein, x is 1 or 2, and when x is 1, A is -COOR ³ , -PO(OR ³ ) ₂ , -SO ₂ (OR ³ ) or -SO(OR ³ ), and x is 2 , A is -PO(OR ³ )-. In addition, when x is 2, two Rf ² -PFPE ² may be the same or different.

In the formula, R ³ is a hydrogen atom or a hydrocarbon group.

As said hydrocarbon group, Preferably it is a C1-C6 alkyl group, Preferably it is a C1-C3 alkyl group, More preferably, it may be a methyl group.

In a preferred embodiment, x is 1 and A is -COOR ³ .

In one preferred form, x is 1 and A is -COOH.

In another preferred embodiment, x is 1 and A is -COOCH ₃ .

The perfluoro (poly) ether-modified compound represented by the formula (E1) may be an unreacted product of the raw material compound when synthesizing the perfluoro (poly) ether group-containing silane compound, or may be a compound added separately. . The compound to be added separately may be the same compound as the compound used for the synthesis, or may be a different compound.

The perfluoro (poly) ether-modified compound represented by the formula (E1) is not particularly limited, but may have a number average molecular weight of 5×102 to 1×105. The number average molecular weight may be preferably 1,000 to 30,000, more preferably 2,000 to 15,000, and still more preferably 3,000 to 8,000.

In a preferred embodiment, the perfluoro (poly) ether group represented by the formulas (A1), (A2), (B1), (B2), (C1), (C2), (D1) or (D2) is contained. The difference between the number average molecular weight of the silane compound and the number average molecular weight of the perfluoro (poly) ether modified compound represented by the formula (E1) is 2,000 or less, preferably 1,500 or less, more preferably 1,000 or less, still more preferably is within 500.

In the composition of the present invention, the content ratio of the perfluoro(poly)ether group-containing silane compound and the perfluoro(poly)ether-modified compound is 99.99:0.01 to 70:30, preferably 99.5:0.5 to 80 :20, more preferably 99:1 to 90:10. By setting it as such a range, a perfluoro (poly) ether modified compound can catalyze the reaction of a perfluoro (poly) ether group containing silane compound and a base material efficiently.

In one embodiment, the ratio of the content of the perfluoro(poly)ether group-containing silane compound to the perfluoro(poly)ether-modified compound in the composition of the present invention is 99.99:0.01 to 97:3, preferably may be 99.9:0.1 to 98:2. In another aspect, the content ratio of the perfluoro(poly)ether group-containing silane compound and the perfluoro(poly)ether-modified compound in the composition of the present invention is 95:5 to 70:30, preferably 92 :8 to 80:20.

The composition of the present invention may contain other components in addition to the perfluoro (poly) ether group-containing silane compound and the perfluoro (poly) ether modified compound. Although not particularly limited as such other components, for example, other surface treatment compounds, (non-reactive) fluoropolyether compounds that can be understood as fluorine-containing oils, preferably perfluoro(poly)ether compounds ( hereinafter referred to as "fluorine-containing oil"), a (non-reactive) silicone compound that can be understood as a silicone oil (hereinafter referred to as "silicone oil"), a catalyst, and the like.

Although it does not specifically limit as said fluorine-containing oil, For example, the compound (perfluoro (poly) ether compound) represented by the 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 a C 1-16} alkyl group optionally substituted with one or more fluorine atoms (preferably a C _1-16 perfluoroalkyl group), and Rf ^{6 represents one or more fluorine atoms.} _{represents a C 1-16} alkyl group (preferably a C _1-16 perfluoroalkyl group) optionally substituted with the above fluorine atom, a fluorine atom or a hydrogen atom, Rf ⁵ and Rf ⁶ are more preferably Each independently represents a C _1-3 perfluoroalkyl group.

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

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

Rf ⁵ -(OCF ₂ CF ₂ CF ₂ ) _b'' -Rf ⁶ ... (3a)

Rf ⁵ -(OCF ₂ CF ₂ CF ₂ CF ₂ ) _a'' -(OCF ₂ CF ₂ CF ₂ ) _b'' -(OCF ₂ CF ₂ ) _c'' -(OCF ₂ ) _d'' -Rf ⁶ … (3b)

In these formulas, Rf ⁵ and Rf ⁶ are the same as above; In formula (3a), b'' is an integer of 1 or more and 100 or less; In formula (3b), a'' and b'' are each independently an integer of 1 or more and 30 or less, c'' and d'' is each independently an integer of 1 or more and 300 or less. The order of existence of each repeating unit enclosed in parentheses with subscripts a'', b'', c'', d'' is arbitrary in the formula.

The fluorine-containing oil may have an average molecular weight of 1,000 to 30,000. Thereby, high surface sliding property can be obtained.

In the composition of the present invention, the fluorine-containing oil contains 100 parts by mass in total of the perfluoro (poly) ether group-containing silane compound and the perfluoro (poly) ether modified compound (in the case of two or more, the sum of these) , hereinafter the same), for example, 0 to 500 parts by mass, preferably 0 to 400 parts by mass, more preferably 5 to 300 parts by mass may be included.

The compound represented by the general formula (3a) and the compound represented by the general formula (3b) may be used alone or in combination, respectively. It is preferable to use the compound represented by the general formula (3b) rather than the compound represented by the general formula (3a) because higher surface slipperiness is obtained. When these are used in combination, the mass ratio of the compound represented by the general formula (3a) to the compound represented by the general formula (3b) is preferably 1:1 to 1:30, and 1:1 to 1:10 more preferably. According to such a mass ratio, the surface treatment layer excellent in the balance of surface slipperiness|lubricacy and friction durability can be obtained.

In one embodiment, the fluorine-containing oil contains one or more compounds represented by the general formula (3b). In this aspect, in the surface treatment agent, the mass ratio of the total of the perfluoro(poly)ether group-containing silane compound and the perfluoro(poly)ether modified compound to the compound represented by the formula (3b) is 4: It is preferably 1 to 1:4.

In a preferred embodiment, when the surface treatment layer is formed by vacuum deposition, the average molecular weight of the perfluoro (poly) ether group-containing silane compound and the perfluoro (poly) ether modified compound is higher than the average molecular weight of the fluorine-containing oil. The average molecular weight may be increased. By setting it as such an average molecular weight, more excellent friction durability and surface slipperiness can be obtained.

In addition, from another viewpoint, the fluorine-containing oil may be a compound represented by the _{general formula Rf'-F (wherein Rf' is a C 5-16 perfluoroalkyl group).} Moreover, chlorotrifluoroethylene oligomer may be sufficient. The compound represented by Rf'-F and the chlorotrifluoroethylene oligomer are preferable from the viewpoint of obtaining high affinity with the perfluoro(poly)ether group-containing silane compound in which ^{Rf 1} is a C _{1-16 perfluoroalkyl group.} do.

The fluorine-containing oil contributes to improving the surface slipperiness of the surface treatment layer.

As the silicone oil, for example, a linear or cyclic silicone oil having a siloxane bond of 2,000 or less can be used. The linear silicone oil may be so-called straight silicone oil and modified silicone oil. Examples of the straight silicone oil include dimethyl silicone oil, methylphenyl silicone oil, and methylhydrogen silicone oil. Examples of the modified silicone oil include those obtained by modifying a straight silicone oil with alkyl, aralkyl, polyether, higher fatty acid ester, fluoroalkyl, amino, epoxy, carboxyl, alcohol or the like. Examples of the cyclic silicone oil include cyclic dimethylsiloxane oil.

In the composition of the present invention, such silicone oil contains 100 parts by mass in total of the perfluoro (poly) ether group-containing silane compound and the perfluoro (poly) ether modified compound (in the case of two or more, their total, the following also), for example, may be included in an amount of 0 to 300 parts by mass, preferably 0 to 200 parts by mass.

Silicone oil contributes to improving the surface slipperiness 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.) can be heard

The catalyst promotes hydrolysis and dehydration condensation of the perfluoro(poly)ether group-containing silane compound, and promotes formation of a surface treatment layer.

The composition of the present invention may be in the form of one solution (or suspension or dispersion), or a separate solution of the perfluoro (poly) ether group-containing silane compound and the perfluoro (poly) ether modified compound is used. It may be in the form of mixing immediately before.

The composition of the present invention can be made into pellets by impregnating a porous substance, for example, a porous ceramic material, a metal fiber, for example, a cotton-like hardened steel wool. The said pellet can be used for vacuum vapor deposition, for example.

Since the composition of this invention can provide water repellency, oil repellency, antifouling property, waterproofness, and high friction durability with respect to a base material, it is used suitably as a surface treatment agent. Specifically, the composition of the present invention is not particularly limited, and can be suitably used as an antifouling coating agent or a waterproof coating agent.

Next, the article of the present invention will be described.

The article of the present invention includes a substrate and a layer (surface treatment layer) formed on the surface of the substrate with the composition of the present invention. This article can be manufactured, for example, as follows.

First, the substrate is prepared. The substrate usable in the present invention is, for example, glass, sapphire glass, resin (a natural or synthetic resin, for example, a general plastic material, plate shape, film, or other form may be sufficient), metal (aluminum, copper, iron) Any suitable material such as a simple metal such as metal or a composite such as an alloy), ceramics, semiconductors (silicon, germanium, etc.), fibers (fabric, non-woven fabric, etc.), fur, leather, wood, ceramics, stone, etc., building members, etc. can be composed of

As said glass, soda-lime glass, alkali aluminosilicate glass, borosilicate glass, alkali-free glass, crystal glass, and quartz glass are preferable, and chemically strengthened soda-lime glass, chemically strengthened alkali aluminosilicate glass, and chemically bonded borosilicate glass are especially preferable. desirable.

As resin, an acrylic resin and polycarbonate are preferable.

For example, when the article to be manufactured is an optical member, the material constituting the surface of the substrate may be a material for an optical member, for example, glass or transparent plastic. Moreover, when the article to be manufactured is an optical member, any layer (or film|membrane), for example, a hard-coat layer, an antireflection layer, etc. may be formed in the surface (outermost layer) of a base material. For the antireflection layer, either a single layer antireflection layer or a multilayer antireflection layer may be used. Examples of the inorganic material usable for the antireflection layer include SiO ₂ , SiO, ZrO ₂ , TiO ₂ , TiO, Ti ₂ O ₃ , Ti ₂ O ₅ , Al ₂ O ₃ , Ta ₂ O ₅ , CeO ₂ , MgO, Y ₂ O ₃ , SnO ₂ , MgF ₂ , WO ₃ , and the like. These inorganic substances may be used individually or in combination of 2 or more types (for example, as a mixture). When a multi-layer anti-reflection layer, the outermost layer, it is preferable to use SiO ₂ and / or SiO. When the article to be manufactured is an optical glass component for a touch panel, a transparent electrode, for example, a thin film using indium tin oxide (ITO), indium zinc oxide, or the like may be provided on a part of the surface of the base material (glass). In addition, the base material, according to the specific specifications, etc., insulating layer, adhesive layer, protective layer, decorative frame layer (I-CON), fog film layer, hard coating film layer, polarizing film, phase difference film, liquid crystal display module, etc. you may have

The shape of the substrate is not particularly limited. Further, the surface area of the substrate on which the surface treatment layer is to be formed may be at least a part of the surface of the substrate, and may be appropriately determined according to the use and specific specifications of the article to be manufactured.

As such a base material, at least the surface part should just contain the material which originally has a hydroxyl group. Glass is mentioned as such a material, and a metal (especially a nonmetal), ceramics, a semiconductor, etc. which a natural oxide film or thermally oxidized film is formed on the surface are mentioned. Alternatively, when having a hydroxyl group is not sufficient as in the case of a resin or the like, or when the hydroxyl group is not originally provided, a hydroxyl group can be introduced or increased on the surface of the base material by subjecting the base material to some pretreatment. Plasma treatment (for example, corona discharge) and ion beam irradiation are mentioned as an example of such a pre-processing. Plasma treatment can introduce or increase hydroxyl groups on the surface of the substrate, and can also be suitably used for cleaning (removing foreign matter, etc.) the surface of the substrate. In addition, as another example of such pretreatment, an interfacial adsorbent having a carbon-carbon unsaturated bond group is previously formed in the form of a monomolecular film on the surface of a substrate by the LB method (Langmuir-Blodgett method) or chemical adsorption method, and then oxygen or nitrogen The method of cleaving an unsaturated bond in the atmosphere containing etc. is mentioned.

Alternatively, as such a substrate, at least the surface portion thereof may include a silicone compound having one or more other reactive groups, for example, Si-H groups, or a material containing an alkoxysilane.

Next, the composition film of the present invention is formed on the surface of such a substrate, and the film is post-treated as necessary, thereby forming a surface treatment layer from the composition of the present invention.

Film formation of the composition of the present invention can be carried out by applying the composition of the present invention to the surface of a substrate so as to cover the surface. The coating method is not specifically 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 similar methods.

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

Moreover, coating by the atmospheric pressure plasma method is also possible.

When the wet coating method is used, the composition of the present invention can be applied to the substrate surface after being diluted with a solvent. From the viewpoint of composition stability and solvent volatility of the present invention, the following solvents are preferably used: C _5-12 perfluoroaliphatic hydrocarbons (for example, perfluorohexane, perfluoromethylcyclohexane and perfluoro rho-1,3-dimethylcyclohexane); polyfluoroaromatic hydrocarbons (eg, bis(trifluoromethyl)benzene); polyfluoroaliphatic hydrocarbons (eg, C ₆ F ₁₃ CH ₂ CH ₃ (eg, Asahiclean (registered trademark) AC-6000 manufactured by Asahi Glass Co., Ltd.), 1,1,2,2, 3,3,4-heptafluorocyclopentane (eg, Zeon (registered trademark) H manufactured by Nippon Zeon Co., Ltd.); hydrofluorocarbon (HFC) (eg, 1,1,1; 3,3-pentafluorobutane (HFC-365mfc)); , perfluoropropylmethyl ether (C ₃ F ₇ OCH ₃ ) (for example, Novec (trade name) 7000 manufactured by Sumitomo 3M Co., Ltd.), perfluorobutylmethyl ether (C ₄ F ₉ OCH ₃ ) ( For example, Sumitomo 3M Co., Ltd. Novec (trade name) 7100), perfluorobutylethyl ether (C ₄ F ₉ OC ₂ H ₅ ) (For example, Sumitomo 3M Co., Ltd. Novec (trade name)) Alkyl perfluoros such as 7200), perfluorohexylmethyl ether (C ₂ F ₅ CF(OCH ₃ )C ₃ F ₇ ) (for example, Novec (trade name) 7300 manufactured by Sumitomo 3M Co., Ltd.) Rho alkyl ether (perfluoroalkyl group and alkyl group may be straight-chain or branched), or CF ₃ CH ₂ OCF ₂ CHF ₂ (For example, Asahi Clean (registered trademark) AE-3000 manufactured by Asahi Glass Co., Ltd.) ; can be used alone or as a mixture in combination of two or more.In addition, for example, for adjusting the solubility of perfluoro(poly)ether group-containing silane compounds and perfluoropolyether-modified compounds, etc. , may be mixed with other solvents.

In the case of using the dry coating method, the composition of the present invention may be applied to the dry coating method as it is, or may be applied to the dry coating method after diluting with the above-described solvent.

It is preferable to perform film formation so that the composition of this invention may exist in a film|membrane together with the catalyst for hydrolysis and dehydration condensation. For convenience, in the case of the wet coating method, after diluting the composition of the present invention with a solvent and immediately before application to the surface of the substrate, a catalyst may be added to the diluent of the composition of the present invention. In the case of the dry coating method, the composition of the present invention to which the catalyst has been added is vapor-deposited (normally, vacuum vapor deposition) as it is, or a porous metal such as iron or copper is impregnated with the composition of the present invention to which the catalyst is added. may be used for vapor deposition (usually vacuum vapor deposition).

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

Then, if necessary, the film is post-treated. Although this post-process is not specifically limited, For example, what is necessary is just to implement water supply and drying heating sequentially, More specifically, you may implement as follows.

After the composition of the present invention is formed on the surface of the substrate as described above, moisture is supplied to the film (hereinafter, also referred to as “precursor film”). The method for supplying moisture is not particularly limited, and for example, methods such as dew condensation due to a temperature difference between the precursor film (and the substrate) and the surrounding atmosphere, and spraying of water vapor (steam) may be used.

Supply of moisture is, for example, 0 to 250 ° C., preferably 60 ° C. or higher, more preferably 100 ° C. or higher, preferably 180 ° C. or lower, more preferably 150 ° C. or lower atmosphere. have. By supplying moisture in such a temperature range, it is possible to advance hydrolysis. Although the pressure in this case is not specifically limited, For simplicity, it can be set as normal pressure.

Next, the precursor film is heated on the surface of the substrate in a dry atmosphere exceeding 60°C. The drying heating method is not particularly limited, and the precursor film together with the substrate is at a temperature exceeding 60°C, preferably exceeding 100°C, for example, at a temperature of 250°C or lower, preferably 180°C or lower, and What is necessary is just to arrange|position in the atmosphere of unsaturated water vapor pressure. Although the pressure in this case is not specifically limited, For simplicity, it can be set as normal pressure.

In such an atmosphere, between the perfluoro (poly) ether group-containing silane compounds of the present invention, the groups bonded to Si after hydrolysis are rapidly dehydrated and condensed. In addition, between such a compound and a substrate, a group bonded to Si after hydrolysis of the compound and a reactive group present on the surface of the substrate react rapidly, and when the reactive group present on the surface of the substrate is a hydroxyl group, it undergoes dehydration condensation. As a result, a bond is formed between the perfluoro(poly)ether group-containing silane compound and the substrate.

You may perform the said water supply and dry heating continuously by using superheated steam.

Post-processing may be performed as described above. Note that this post-treatment may be carried out to further improve the friction durability, but is not essential for manufacturing the article of the present invention. For example, after applying the composition of the present invention to the surface of the substrate, it may be left still as it is.

As described above, the surface treatment layer derived from the film of the composition of the present invention is formed on the surface of the substrate, and the article of the present invention is manufactured. The surface treatment layer obtained by this has high friction durability. In addition to high friction durability, this surface treatment layer, although depending on the composition of the composition to be used, has water repellency, oil repellency, antifouling properties (for example, to prevent adhesion of stains such as fingerprints), surface slip property (or lubricity) , for example, wiping properties of contamination such as fingerprints, or excellent tactile feel to the fingers), and the like, and may be suitably used as a functional thin film.

That is, this invention also relates to the optical material which has the said hardened|cured material as an outermost layer.

As the optical material, in addition to optical materials for displays and the like as exemplified later, various optical materials are preferably exemplified: for example, cathode ray tubes (CRTs; for example, TVs, personal computer monitors), liquid crystal displays, plasmas. Display, organic EL display, inorganic thin film EL dot matrix display, rear projection display, fluorescent display tube (VFD), field emission display (FED), etc. what was done.

The article having a surface treatment layer obtained by the present invention is not particularly limited, but may be an optical member. Examples of the optical member include the following: lenses such as glasses; Front protection plates, anti-reflection plates, polarizing plates, and anti-glare plates of displays such as PDP and LCD; touch panel sheets for devices such as mobile phones and portable information terminals; the disc surface of optical discs such as Blu-ray (registered trademark) discs, DVD discs, CD-Rs, and MOs; optical fiber, etc.

Further, the article having a surface treatment layer obtained by the present invention may be a medical device or a medical material.

The thickness of the surface treatment layer is not particularly limited. In the case of the optical member, the thickness of the surface treatment layer is in the range of 1 to 50 nm, preferably 1 to 30 nm, and more preferably 1 to 15 nm, so that optical performance, surface slipperiness, friction durability and antifouling properties preferred in that respect.

As mentioned above, the article obtained using the composition of this invention was demonstrated in detail. In addition, the use of the composition of the present invention, the method of use or the method of manufacturing the article are not limited to those exemplified above.

Example

The composition of the present invention will be described in more detail through the following examples, but the present invention is not limited to these examples. In addition, in this Example, the chemical formulas shown below all show an average composition, and the order of existence of _{the repeating unit (CF 2} CF ₂ CF _{2 O) constituting the perfluoropolyether is arbitrary.}

・Synthesis Example 1

Synthesis of perfluoropolyether-modified methyl ester compound

In a reactor, 240 g of methanol and 19.6 g of triethylamine were put, and under a nitrogen stream, at 5° C., the average composition CF ₃ CF ₂ CF ₂ O (CF ₂ CF ₂ CF ₂ O) ₃₂ CF ₂ CF ₂ COF Purple represented by 500 g of a fluoropolyether-modified acid fluoro compound was added dropwise, and then the temperature was raised to room temperature, followed by stirring. Subsequently, after adding and stirring 300 g of perfluorohexane, it was transferred to a separatory funnel, and after standing still, the perfluorohexane layer was fractionated. Then, washing operation with 3-N hydrochloric acid aqueous solution was performed. Next, 30 g of anhydrous magnesium sulfate was added to the perfluorohexane layer and stirred, and the insoluble matter was separated by filtration. Then, 476 g of the following perfluoropolyether modified methyl ester body (A) which has a methyl ester group at the terminal was obtained by distilling off a volatile matter under reduced pressure.

-Perfluoropolyether-modified methyl ester compound (A):

CF ₃ CF ₂ CF ₂ O(CF ₂ CF ₂ CF ₂ O) ₃₂ CF ₂ CF ₂ CO ₂ CH ₃

· Synthesis Example 2

Synthesis of perfluoropolyether-modified carboxylic acid compound

Into the reactor, 100 g of pure water, 20.4 g of triethylamine were put, and under a nitrogen stream, at 5° C., the average composition CF ₃ CF ₂ CF ₂ O (CF ₂ CF ₂ CF ₂ O) ₃₂ CF ₂ CF ₂ COF Purple represented by 500 g of a fluoropolyether-modified acid fluoro compound was added dropwise, and then the temperature was raised to room temperature, followed by stirring. Subsequently, after adding and stirring 400 g of perfluorohexane, it transferred to a separatory funnel, and after standing still, the perfluorohexane layer was fractionated. Then, washing operation with 3-N hydrochloric acid aqueous solution was performed. Next, 30 g of anhydrous magnesium sulfate was added to the perfluorohexane layer and stirred, and the insoluble matter was separated by filtration. Then, by distilling off the volatile matter under reduced pressure, 476 g of the following perfluoropolyether-modified carboxylic acid compound (B) having a carboxylic acid group at the terminal was obtained.

·Perfluoropolyether-modified carboxylic acid compound (B):

CF ₃ CF ₂ CF ₂ O(CF ₂ CF ₂ CF ₂ O) ₃₂ CF ₂ CF ₂ CO ₂ H

· Synthesis Example 3

Synthesis of perfluoropolyether-modified phosphoric acid ester compound

In a reactor, 200 g of 1,3-bis(trifluoromethyl)benzene and 54.5 g of phosphoryl chloride were added, and the average composition CF ₃ CF ₂ CF ₂ O (CF ₂ CF ₂ CF ₂ O) was added at 5° C. under a nitrogen stream. ) _{200 g of a perfluoropolyether-modified alcohol compound represented by 32} CF ₂ CF ₂ CH ₂ OH was added dropwise, and then the temperature was raised to room temperature and stirred. Then, after adding and stirring 400 g of perfluorohexanes, 100 g of pure water was dripped and it stirred. Thereafter, it was transferred to a separatory funnel, and after standing still, the perfluorohexane layer was fractionated. Then, washing operation with 3-N hydrochloric acid aqueous solution was performed. Next, 10 g of anhydrous magnesium sulfate was added to the perfluorohexane layer and stirred, and the insoluble matter was separated by filtration. Then, 202 g of the following perfluoropolyether modified|denatured phosphoric acid ester compound (C) which has a phosphoric acid group at the terminal was obtained by distilling off a volatile matter under reduced pressure.

-Perfluoropolyether group-containing phosphoric acid ester compound (C):

CF ₃ CF ₂ CF ₂ O(CF ₂ CF ₂ CF ₂ O) ₃₂ CF ₂ CF ₂ CH ₂ OP(=O)(OH) ₂

Example 1

The perfluoropolyether-modified methyl ester compound (A) obtained in Synthesis Example 1 and the perfluoropolyether-modified silane compound (X) shown below were mixed at a molar ratio of 2:98, and added to Novec 7200 (manufactured by 3M). By dissolving it, the surface treatment agent 1 was prepared so that it might become a density|concentration of 20 wt%.

・Perfluoropolyether-modified silane compound (X)

CF ₃ CF ₂ CF ₂ O(CF ₂ CF ₂ CF ₂ O) ₃₂ CF ₂ CF ₂ CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₃

The surface treatment agent 1 prepared above was vacuum vapor-deposited on chemically strengthened glass (the Corning company make, "Gorilla" glass, thickness 0.7mm). The vacuum deposition treatment condition is a pressure of 3.0 × 10 ^-3 Pa, and first, silicon dioxide is deposited on the surface of this chemically strengthened glass to a thickness of 7 nm by electron beam evaporation to form a silicon dioxide film, and then , 2 mg of the surface treatment agent was vapor-deposited per 1 sheet of chemically strengthened glass (55 mm x 100 mm). Thereafter, the chemically strengthened glass having the vapor deposition film was left still in an atmosphere of a temperature of 20°C and a humidity of 65% for 24 hours. Thereby, the vapor deposition film was hardened|cured and the surface treatment layer was formed.

(Examples 2 to 9)

A surface treatment agent was prepared by mixing perfluoropolyether-modified compounds (A) to (C) and perfluoropolyether-modified silane compounds (X) to (Z) in a molar ratio of 2:98 in a combination of the table below, It carried out similarly to Example 1, the surface treatment agent was prepared, and the surface treatment layer was formed.

・Perfluoropolyether-modified silane compound (Y)

CF ₃ CF ₂ CF ₂ O(CF ₂ CF ₂ CF ₂ O) ₃₂ CF ₂ CF ₂ CON(CH ₃ )CH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₃

・Perfluoropolyether-modified silane compound (Z)

CF ₃ CF ₂ CF ₂ O(CF ₂ CF ₂ CF ₂ O) ₃₂ CF ₂ CF ₂ CH ₂ OCH ₂ CH ₂ CH ₂ Si[CH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₃ ] ₃

Comparative Examples 1 to 3

Except using independently the said perfluoropolyether modified silane compounds (X) - (Z), it carried out similarly to Example 1, the surface treatment agent was prepared, and the surface treatment layer was formed.

Comparative Example 4

A surface treatment agent was prepared in the same manner as in Example 1 except that acetic acid and the perfluoropolyether-modified silane compound (X) were mixed at a molar ratio of 2:98 to prepare a surface treatment agent, and a surface treatment layer was formed.

About the surface treatment layer formed on the base material surface in the said Examples 1-9 and Comparative Examples 1-4, the friction durability test was evaluated by the eraser friction durability test. Specifically, a sample article having a surface treatment layer formed thereon is horizontally placed, an eraser (manufactured by Kokuyo Co., Ltd., KESHI-70, planar dimension 1 cm × 1.6 cm) is brought into contact with the surface of the surface treatment layer, and on it A load of 500 gf was applied, and thereafter, the eraser was reciprocated at a speed of 20 mm/sec while the load was applied. The static contact angle (degrees) of water was measured every 500 round trips. Evaluation was stopped when the measured value of the contact angle became less than 100 degrees. Finally, Table 3 shows the number of reciprocations when the contact angle exceeds 100 degrees.

From the above results, Examples 1 to 9 in which a perfluoro(poly)ether group-containing silane compound and a perfluoropolyether-modified compound were used in combination were compared using a perfluoro(poly)ether group-containing silane compound alone. It was confirmed to have a higher eraser resistance than Examples 1-3. Although the present invention is not limited by any theory, the perfluoropolyether-modified compounds (A) to (C) act as an acidic catalyst when creating a surface treatment layer, and contain a perfluoro(poly)ether group It is thought that the reactivity between the silane compounds (X) to (Z) and the substrate surface was improved, and as a result, excellent eraser durability was obtained. In addition, it was confirmed that Example 4 using the perfluoropolyether-modified carboxylic acid compound (B) had higher eraser resistance than Comparative Example 4 using acetic acid that could simply function as a catalyst. Although the present invention is not bound by any theory, it is believed that this is because the acid has a perfluoropolyether group, which itself can contribute to the function of the surface treatment layer.

INDUSTRIAL APPLICATION This invention can be used suitably in order to form a surface treatment layer on the surface of various various base materials, especially the optical member which transmittance is requested|required.

Claims (35)

The general formulas (D1) and (D2):

[During the ceremony:
PFPE ¹ is each independently for each occurrence, the formula:
-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -
(wherein a, b, c, d, e and f are each independently an integer of 0 or more and 200 or less, the sum of a, b, c, d, e and f is at least 1, a, b, The order of existence of each repeating unit appended with c, d, e or f and enclosed in parentheses is arbitrary in the formula.)
is a group represented by;
Rf ¹ each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms in each occurrence;
X ⁹ each independently represents a single bond or a 2- to 10-valent organic group;
each δ is independently an integer from 1 to 9;
each δ′ is independently an integer from 1 to 9;
R ^d represents, independently for each occurrence, -Z ² -CR ⁸¹ _p2 R ⁸² _q2 R ⁸³ _r2 ;
Z ² at each occurrence each independently represents an oxygen atom or a divalent organic group;
R ⁸¹ for each occurrence each independently represents ^{R d';}
R ^d' has the same meaning as ^{R d ;}
Among R ^d , Cs connected in a straight chain through a ^{Z 2 group are at most 5;}
R ⁸² at each occurrence each independently represents -Y-SiR ⁸⁵ _n2 R ⁸⁶ _3-n2 ;
Y each independently represents a divalent organic group at each occurrence;
R ⁸⁵ each independently represents a hydroxyl group or a hydrolyzable group in each occurrence;
R ⁸⁶ in each occurrence each independently represents a hydrogen atom or a lower alkyl group;
n2 represents an integer of 1 to 3 independently for each (-Y-SiR ⁸⁵ _n2 R ⁸⁶ _{3-n2 ) unit;}
provided that, in formulas (D1) and (D2), at least one n2 is an integer of 1 to 3;
R ⁸³ in each occurrence each independently represents a hydrogen atom or a lower alkyl group;
p2 for each occurrence, each independently, is an integer from 0 to 3;
q2 is, for each occurrence, each independently an integer from 0 to 3;
r2 for each occurrence, each independently, is an integer from 0 to 3;
R ^e represents, independently for each occurrence, -Y-SiR ⁸⁵ _n2 R ⁸⁶ _3-n2 ;
R ^f at each occurrence each independently represents a hydrogen atom or a lower alkyl group;
k2 for each occurrence, each independently, is an integer from 0 to 3;
l2 for each occurrence, each independently, is an integer from 0 to 3;
m2 is, for each occurrence, each independently an integer from 0 to 3;
However, in formulas (D1) and (D2), at least one q2 is 2 or 3, or at least one l2 is 2 or 3.]
At least one perfluoro (poly) ether group-containing silane compound represented by any of
Formula (E1):

[During the ceremony:
PFPE ² is each independently for each occurrence, the formula:
-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -
(wherein a, b, c, d, e and f are each independently an integer of 0 or more and 200 or less, the sum of a, b, c, d, e and f is at least 1, a, b, The order of existence of each repeating unit appended with c, d, e or f and enclosed in parentheses is arbitrary in the formula.)
is a group represented by;
Rf ² in each occurrence independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms;
Z ² represents a single bond or a divalent organic group;
x is 1 or 2;
when x is 1, A is -COOR ³ , -PO(OR ³ ) ₂ , -SO ₂ (OR ³ ) or -SO(OR ³ );
when x is 2, A is -PO(OR ³ )-;
R ³ is a hydrogen atom or a hydrocarbon group.]
At least one compound represented by
A composition in which the difference between the number average molecular weight of the silane compound containing a perfluoro (poly) ether group represented by the formula (D1) or (D2) and the number average molecular weight of the compound represented by the formula (E1) is within 2000. According to claim 1,
A ^{composition wherein Rf 1} is a perfluoroalkyl group having 1 to 16 carbon atoms. 3. The method of claim 1 or 2,
PFPE ¹ is of formula (a), (b) or (c):
-(OC ₃ F ₆ ) _d - (a)
[Wherein, d is an integer of 1 or more and 200 or less.]
-(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (b)
[wherein, c and d are each independently an integer of 0 or more and 30 or less;
e and f are each independently an integer of 1 or more and 200 or less;
the sum of c, d, e and f is an integer of 10 or more and 200 or less;
The order of existence of each repeating unit enclosed in parentheses with a subscript c, d, e or f is arbitrary in the formula.]
-(R ⁶ -R ⁷ ) _q - (c)
[wherein R ⁶ is OCF ₂ or OC ₂ F ₄ ;
R ⁷ is _{a group selected from OC 3} F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ , or a combination of 2 or 3 groups selected from these groups;
q is an integer from 2 to 100.]
phosphorus composition. 3. The method of claim 1 or 2,
A composition wherein X ⁹ is a divalent organic group, δ is 1, and δ′ is 1. 3. The method of claim 1 or 2,
X ⁹ is -(R ³¹ ) _p' -(X ^a ) _q' -
[During the ceremony:
R ³¹ each independently represents a single bond, -(CH ₂ ) _s' - (wherein s' is an integer of 1 to 20) or an o-, m- or p-phenylene group;
X ^a represents -(X ^b ) _l' - (wherein, l' is an integer from 1 to 10);
X ^b is each independently in each occurrence, -O-, -S-, o-, m- or p-phenylene group, -C(O)O-, -Si(R ³³ ) ₂ -, -(Si (R ³³ ) ₂ O) _m' -Si(R ³³ ) ₂ - (wherein m' is an integer from 1 to 100), -CONR ³⁴ -, -O-CONR ³⁴ -, -NR ³⁴ - and - (CH ₂ ) _n' represents a group selected from the group consisting of - (wherein n' is an integer from 1 to 20);
R ³³ in each occurrence each independently represents a phenyl group, a C _1-6 alkyl group or a C _1-6 alkoxy group;
R ³⁴ in each occurrence each independently represents a hydrogen atom, a phenyl group or a C _1-6 alkyl group;
p' is 0, 1 or 2;
q' is 0 or 1;
wherein at least one of p' and q' is 1, and the order of existence of each repeating unit appended with p' or q' and enclosed in parentheses is arbitrary in the formula;
R ³¹ and X ^a 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.]}
A group composition represented by . 3. The method of claim 1 or 2,
X ⁹ is:
single bond,
-CH ₂ O(CH ₂ ) ₂ -,
-CH ₂ O(CH ₂ ) ₃ -,
-CH ₂ O(CH ₂ ) ₆ -,
-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₃ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₁₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ OCF ₂ CHFOCF ₂ -,
-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ -,
-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -,
-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ -,
-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ -,
-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ CF ₂ -,
-CH ₂ OCH ₂ CF ₂ CF ₂ OCF(CF ₃ )CF ₂ OCF ₂ -,
-CH ₂ OCH ₂ CF ₂ CF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ -,
-CH ₂ OCH ₂ CF ₂ CF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ CF ₂ -,
-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ -,
-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ -,
-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ CF ₂ -,
-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ -,
-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ -,
-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ CF ₂ -
-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -C(O)NH-CH ₂ -,
-CH ₂ OCH ₂ (CH ₂ ) ₇ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₃ -,
-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₂ CH ₃ ) ₂ OSi(OCH ₂ CH ₃ ) ₂ (CH ₂ ) ₃ -,
-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₂ CH ₃ ) ₂ OSi(OCH ₂ CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CH ₂ -,
-(CH ₂ ) ₂ -,
-(CH ₂ ) ₃ -,
-(CH ₂ ) ₄ -,
-(CH ₂ ) ₅ -,
-(CH ₂ ) ₆ -,
-CO-
-CONH-
-CONH-CH ₂ -,
-CONH-(CH ₂ ) ₂ -,
-(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -
-CONH-(CH ₂ ) ₃ -,
-CON(CH ₃ )-(CH ₂ ) ₃ -,
-CON(Ph)-(CH ₂ ) ₃ - (wherein Ph means phenyl),
-CONH-(CH ₂ ) ₆ -,
-CON(CH ₃ )-(CH ₂ ) ₆ -,
-CON(Ph)-(CH ₂ ) ₆ - (wherein Ph means phenyl),
-CONH-(CH ₂ ) ₂ NH(CH ₂ ) ₃ -,
-CONH-(CH ₂ ) ₆ NH(CH ₂ ) ₃ -,
-CH ₂ O-CONH-(CH ₂ ) ₃ -,
-CH ₂ O-CONH-(CH ₂ ) ₆ -,
-S-(CH ₂ ) ₃ -,
-(CH ₂ ) ₂ S(CH ₂ ) ₃ -,
-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₃ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₁₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,
-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -
-C(O)O-(CH ₂ ) ₃ -,
-C(O)O-(CH ₂ ) ₆ -,
-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -,
-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -CH(CH ₃ )-,
-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₃ -,
-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -CH(CH ₃ )-CH ₂ -,
-OCH ₂ -,
-O(CH ₂ ) ₃ -,
-OCFHCF ₂ -,

A composition selected from the group consisting of. delete 3. The method of claim 1 or 2,
wherein l2 is 3 and n2 is 3. 3. The method of claim 1 or 2,
Y is a C _1-6 alkylene group, -(CH ₂ ) _g' -O-(CH ₂ ) _h' - (wherein g' is an integer from 0 to 6, and h' is an integer from 0 to 6) ) or -phenylene-(CH ₂ ) _i′ - (wherein i′ is an integer from 0 to 6). 3. The method of claim 1 or 2,
A ^{composition in which X 9} is a 3- to 10-valent organic group. 11. The method of claim 10,
X ⁹ is:

[wherein, in each group, at least one of T is the following groups bonded to ^{PFPE 1 in formulas (D1) and (D2):}
-CH ₂ O(CH ₂ ) ₂ -,
-CH ₂ O(CH ₂ ) ₃ -,
-CF ₂ O(CH ₂ ) ₃ -,
-(CH ₂ ) ₂ -,
-(CH ₂ ) ₃ -,
-(CH ₂ ) ₄ -,
-CONH-(CH ₂ ) ₃ -,
-CON(CH ₃ )-(CH ₂ ) ₃ -,
-CON(Ph)-(CH ₂ ) ₃ - (wherein Ph means phenyl) and

ego,
_{At least one of the other T is -(CH 2} ) _n - (n is an integer of 2 to 6) bonded to a carbon atom or a Si atom in the formulas (D1) and (D2), and the rest are each independently, a methyl group, a phenyl group, an alkoxy group having 1 to 6 carbon atoms, a radical trapping group, or an ultraviolet absorbing group;
R ⁴¹ is each independently a hydrogen atom, a phenyl group, an alkoxy group having 1 to 6 carbon atoms, or an alkyl group having 1 to 6 carbon atoms;
R ⁴² each independently represents a hydrogen atom, a C _1-6 alkyl group or a C _1-6 alkoxy group.]
A composition selected from the group consisting of. 3. The method of claim 1 or 2,
The composition in which the number average molecular weight of the perfluoro (poly) ether group containing silane compound represented by Formula (D1) or (D2) is 1,000-30,000. delete delete delete delete 3. The method of claim 1 or 2,
A ^{composition wherein Rf 2} is a perfluoroalkyl group having 1 to 16 carbon atoms. 3. The method of claim 1 or 2,
PFPE ² is represented by the formula (a), (b) or (c):
-(OC ₃ F ₆ ) _d - (a)
[Wherein, d is an integer of 1 or more and 200 or less.]
-(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (b)
[wherein, c and d are each independently an integer of 0 or more and 30 or less;
e and f are each independently an integer of 1 or more and 200 or less;
the sum of c, d, e and f is an integer of 10 or more and 200 or less;
The order of existence of each repeating unit enclosed in parentheses with a subscript c, d, e or f is arbitrary in the formula.]
-(R ⁶ -R ⁷ ) _q - (c)
[wherein R ⁶ is OCF ₂ or OC ₂ F ₄ ;
R ⁷ is _{a group selected from 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;
q is an integer from 2 to 100.]
phosphorus composition. 3. The method of claim 1 or 2,
The divalent organic group in ^{Z 2 is,}
-(CR ¹⁸ ₂ ) _k7 -(O) _k8 -(NR ¹⁹ ) _k9 -,
[During the ceremony:
each R ¹⁸ is independently a hydrogen atom or a fluorine atom;
R ¹⁹ each independently represents a hydrogen atom, a phenyl group, or a C _1-6 alkyl group;
k7 is an integer from 1 to 20;
k8 is an integer from 0 to 10;
k9 is an integer from 0 to 10;
Here, the order of existence of each repeating unit enclosed in parentheses with k7, k8 or k9 is arbitrary in the formula.]
phosphorus composition. 3. The method of claim 1 or 2,
Z ² is -(CF ₂ ) _k7' - or -(CF ₂ ) _k7' -(O) _k8' -
[During the ceremony:
k7' is an integer from 1 to 6;
k8' is an integer from 1 to 3;
Here, the order of existence of each repeating unit enclosed in parentheses with k7' or k8' is arbitrary in the formula.]
phosphorus composition. 3. The method of claim 1 or 2,
A composition in which A is -COOR ^3. 3. The method of claim 1 or 2,
The composition whose number average molecular weights of the compound represented by Formula (E1) are 1,000-30,000. 3. The method of claim 1 or 2,
A composition further comprising one or more other components selected from fluorine-containing oil, silicone oil and catalyst. 24. The method of claim 23,
Fluorine-containing oil, formula (3):
Rf ³ -(OC ₄ F ₈ ) _a1 -(OC ₃ F ₆ ) _b1 -(OC ₂ F ₄ ) _c1 -(OCF ₂ ) _d1 -Rf ⁴ (3)
[During the ceremony:
Rf ³ represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms;
Rf ⁴ represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms, a fluorine atom or a hydrogen atom;
a1, b1, c1, and d1 each represent the number of four repeating units of perfluoro (poly) ether constituting the main backbone of the polymer, and each independently represent an integer of 0 or more and 300 or less, a1, b1, c1 and The sum of d1 is at least 1, and the order of existence of each repeating unit enclosed in parentheses with a subscript a1, b1, c1 or d1 is arbitrary in the formula.]
One or more compounds represented by the composition. 3. The method of claim 1 or 2,
A composition also comprising a solvent. 3. The method of claim 1 or 2,
A composition that is a surface treatment agent. 3. The method of claim 1 or 2,
A composition used as an antifouling coating agent or a waterproof coating agent. A pellet containing the composition according to claim 1 or 2. An article comprising a substrate and a layer formed of the composition according to claim 1 or 2 on the surface of the substrate. 30. The method of claim 29,
An article whose substrate is glass. 30. The method of claim 29,
An article wherein the substrate is a glass selected from the group consisting of sapphire glass, soda-lime glass, alkali aluminosilicate glass, borosilicate glass, alkali-free glass, crystal glass and quartz glass. 30. The method of claim 29,
An article that is an optical member. 30. The method of claim 29,
Items that are displays. Formula (E1):

[During the ceremony:
Rf ² each independently represents an alkyl group having 1 to 16 carbon atoms which may be substituted with one or more fluorine atoms;
PFPE ² is each independently -(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 ) _{represents f} -, wherein a, b, c, d, e and f are each independently an integer of 0 or more and 200 or less, and the sum of a, b, c, d, e and f is at least 1 , and the order of existence of each repeating unit appended with a, b, c, d, e or f and enclosed in parentheses is arbitrary in the formula;
Z ² represents a single bond or a divalent organic group;
x is 1 or 2;
when x is 1, A is -COOR ³ , -PO(OR ³ ) ₂ , -SO ₂ (OR ³ ) or -SO(OR ₃ );
when x is 2, A is -PO(OR ³ )-;
R ³ is a hydrogen atom or a hydrocarbon group.]
A condensation accelerator for a silane compound containing a perfluoro (poly) ether group, comprising at least one compound represented by delete