阅读说明：本技术 含有氟聚醚基的聚合物改性有机硅化合物、表面处理剂和物品 (Polymer-modified organosilicon compound containing fluoropolyether group, surface treatment agent, and article ) 是由 片山理佐 松田高至 山根祐治 于 2018-04-19 设计创作，主要内容包括：使用了下式(1)或(2)的化合物的表面处理剂即使不具有水解性基团,也可在室温等温和的条件下形成耐磨损性优异的防水防油层。[Rf为1价或2价的含有氟代氧亚烷基的聚合物残基,Y<Sub>1</Sub>、Y<Sub>2</Sub>为单键或2价烃基,Q为2～4价的具有含Si结构的基团、Si或C,X为含有环氧基的基团,k为0～2,m为1～5,n为1～3,Z为H、-SiR<Sub>3</Sub>(R为烷基或苯基)或-W<Sub>1</Sub>-Q’-W<Sub>2</Sub>-X’(X’为X或-SiR<Sub>3</Sub>,W<Sub>1</Sub>、W<Sub>2</Sub>为单键或2价烃基,Q’为具有含Si结构的2价的基团。),α为1或2。]<Image he="327" wi="700" file="DDA0002284193620000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>(The surface treatment agent using the compound of the following formula (1) or (2) can form a water-and oil-repellent layer excellent in abrasion resistance under mild conditions such as room temperature even if the agent does not have a hydrolyzable group. [ Rf is a residue of a fluorooxyalkylene group-containing polymer having 1 or 2 valences, Y 1 、Y 2 Is a single bond or a 2-valent hydrocarbon group,q is a 2-4 valent group having a Si-containing structure, Si or C, X is an epoxy-containing group, k is 0-2, m is 1-5, n is 1-3, Z is H, -SiR 3 (R is alkyl or phenyl) or-W 1 ‑Q'‑W 2 -X '(X' is X or-SiR) 3 ，W 1 、W 2 Is a single bond or a 2-valent hydrocarbon group, and Q' is a 2-valent group having a Si-containing structure. ) And alpha is 1 or 2.])

1. A polymer-modified organosilicon compound containing a fluoropolyether group represented by the following general formula (1) or (2):

[ solution 1]

Wherein Rf is a residue of a fluorooxyalkylene group-containing polymer having a valence of 1 or 2, and Y is₁、Y₂Each independently is a single bond or a hydrocarbon group having a valence of 2, Q independently is a linear, branched, chain or cyclic organosiloxane residue having a valence of 2 to 4, a silylene structure, a silarylene structure, a diorganosilylene group, a monoorganylsilylene group, a silicon atom, a carbon atom, a combination thereof or a combination thereof with an alkylene group, X independently is a glycidyloxy group, a glycidoxyalkyl group, an alicyclic epoxy group or an alkyl group containing an alicyclic epoxy group, k is an integer of 0 to 2, m is an integer of 1 to 5, n is an integer of 1 to 3, Z independently is a hydrogen atom, a triorganosilyl group represented by the formula, a salt thereof, a hydrate thereof, a,

-SiR₃

Wherein R is independently an alkyl group having 1 to 4 carbon atoms or a phenyl group,

or a group represented by the following formula,

-W₁-Q’-W₂-X’

wherein X' is X or-SiR₃R is the same as above, W₁、W₂Each independently a single bond or a 2-valent hydrocarbon group, Q' is a 2-valent group having a structure selected from the group consisting of diorganosilylene groups, organosiloxane residues, silalkylene structures, silarylene structures, and combinations thereof,

alpha is 1 or 2.

2. The polymer-modified organosilicon compound containing a fluoropolyether group according to claim 1, wherein in the formula (1) or (2), α is 1, and Rf is a residue of a 1-valent fluorooxyalkylene group-containing polymer represented by the following general formula (3),

[ solution 2]

Wherein p, q, r and s are each independently an integer of 0 to 200, p + q + r + s is an integer of 3 to 200, the repeating units may be straight or branched, the repeating units may be randomly bonded to each other, d is an integer of 1 to 3, and the unit (-C)_dF_2d-) may be linear or branched.

3. The polymer-modified organosilicon compound containing a fluoropolyether group according to claim 1, wherein in the formula (1) or (2), α is 2, Rf is a 2-valent fluorooxyalkylene group-containing polymer residue represented by the following general formula (4),

[ solution 3]

Wherein p, q, r and s are each independently an integer of 0 to 200, p + q + r + s is an integer of 3 to 200, the repeating units may be straight or branched, the repeating units may be randomly bonded to each other, d is an integer of 1 to 3, and the unit (-C)_dF_2d-) may be each independently linear or branched.

4. The polymer-modified organosilicon compound containing a fluoropolyether group according to any one of claims 1 to 3, wherein in the formula (1) or (2), Y₁、Y₂Each independently an alkylene group having 2 to 10 carbon atoms.

5. The polymer-modified organosilicon compound containing a fluoropolyether group according to any one of claims 1 to 4, wherein in the formula (1) or (2), Q is a group selected from the group represented by the following formula,

[ solution 4]

In the formula, R¹Independently an alkyl group having 1 to 4 carbon atoms or a phenyl group, R²Is C1-4 alkylene or C6-12 arylene, R³Is a hydrogen atom or R¹G is an integer of 1 to 20, and j is an integer of 1 to 8.

6. The polymer-modified organosilicon compound containing a fluoropolyether group according to any one of claims 1 to 5, wherein in the formula (1), Z is at least one member selected from the group consisting of a hydrogen atom and a group represented by the following,

[ solution 5]

-Si(CH₃)₃

-Si(CH₂CH₃)₃

[ solution 6]

[ solution 7]

[ solution 8]

Wherein g is an integer of 1 to 20.

7. The fluoropolyether group-containing polymer-modified organosilicon compound according to any one of claims 1 to 6, wherein the fluoropolyether group-containing polymer-modified organosilicon compound represented by the general formula (1) or (2) is represented by any one of the following formulae,

[ solution 9]

[ solution 10]

[ solution 11]

[ solution 12]

[ solution 13]

[ solution 14]

[ solution 15]

[ solution 16]

[ solution 17]

[ solution 18]

Wherein Z is the same as above, p1 is an integer of 5 to 100, q1 is an integer of 5 to 100, p1+ q1 is an integer of 10 to 105, each repeating unit may be randomly bonded, and g is an integer of 1 to 20.

8. A surface treatment agent comprising the polymer-modified organosilicon compound containing a fluoropolyether group according to any one of claims 1 to 7.

9. The surface treating agent according to claim 8, further comprising a polymer containing a fluoropolyether group represented by the following general formula (5),

[ solution 19]

A-Rf’-A (5)

Wherein A is a fluorine atom or a terminal group of-CF₃The fluorine-containing group having a valence of 1, and Rf' is a residue of a fluorooxyalkylene group-containing polymer having a valence of 2.

10. An article having a cured coating film of the surface treatment agent according to claim 9 on the surface thereof.

Technical Field

The present invention relates to a polymer-modified organosilicon compound containing a fluoropolyether group, a surface-treating agent comprising the organosilicon compound, and an article surface-treated with the surface-treating agent.

Background

In recent years, the touch panel of a screen has been accelerated, including a display of a mobile phone. However, the touch panel is in a state of a bare screen, and there are many opportunities for direct contact of fingers, cheeks, and the like, and there is a problem that dirt such as sebum is likely to adhere. Therefore, in order to improve the appearance and visibility, there has been a growing demand for a technique for preventing fingerprints from adhering to the surface of a display and a technique for easily removing dirt, and development of materials that can satisfy these demands has been desired. In particular, since fingerprint stains are likely to adhere to the surface of a touch panel display, it is desirable to provide a water-and oil-repellent layer. However, the conventional water-and oil-repellent layer has a high water-and oil-repellency and an excellent dirt-wiping property, but has a problem that the stain-proofing performance is deteriorated during use. Further, depending on the method of coating, the performance may vary, or the adhesion may be deteriorated depending on the base material to be coated. Further, the surface treatment agents so far have exhibited excellent surface properties for glass in many cases, but have not exhibited sufficient surface properties such as adhesion, water and oil repellency, and abrasion resistance for a resin surface.

In general, a fluoropolyether group-containing compound has a very small surface free energy, and therefore has water-and oil-repellency, chemical resistance, lubricity, mold release property, stain resistance, and the like. By utilizing its properties, the composition is industrially widely used as a water-and oil-repellent antifouling agent for paper, fiber and the like, a lubricant for magnetic recording media, an oil-repellent agent for precision equipment, a release agent, a cosmetic, a protective film and the like. However, the properties thereof mean both non-adhesiveness and non-adhesiveness to other substrates, and even if the coating can be applied to the surface of the substrate, it is difficult to make the coating film adhere to the surface.

On the other hand, silane coupling agents are known as substances for bonding organic compounds to the surface of substrates such as glass and cloth, and have been widely used as coating agents for the surface of various substrates. The silane coupling agent has an organic functional group and a reactive silyl group (generally, a hydrolyzable silyl group such as an alkoxysilyl group) in 1 molecule. The hydrolyzable silyl group undergoes a self-condensation reaction due to moisture or the like in the air to form a coating film. The coating film is a strong coating film having durability by chemically and physically bonding the hydrolyzable silyl group to the surface of glass, metal, or the like.

Thus, there has been disclosed a composition which can form a coating film which is easily adhered to the surface of a base material and has water-and oil-repellency, chemical resistance, lubricity, mold releasability, stain-proofing property and the like on the surface of the base material by using a fluoropolyether group-containing polymer-modified silane having a hydrolyzable silyl group introduced into a fluoropolyether group-containing compound (patent documents 1 to 8: Japanese patent application laid-open Nos. 2003-238577, 2860979, 4672095, 2008-534696, 2008-537557, 2012-072272, 2012-157856 and 2013-136833).

When a substrate is surface-treated with the composition containing the fluoropolyether group-containing polymer-modified silane, the substrate is coated with a film by various coating methods, and after the coating, the hydrolyzable silyl group is hydrolyzed to form a film, and the hydrolysis reaction is promoted under high-temperature conditions of 100 ℃ or higher and under humidified conditions. Further, a cured film can be formed even at room temperature by reacting slowly with moisture in the air. However, this curing step requires high-temperature humidified conditions, and takes time when curing is performed at room temperature, which may cause a problem of speed control (delay factor) in manufacturing. Further, a coating film (water-and oil-repellent layer) cured for a short time under mild conditions such as room temperature curing has a problem of deterioration in abrasion resistance and stain-proofing performance during use.

In patent document 9 (jp 2008-144144 a), a fluorine-containing carboxylic acid is added to a coating composition as a curing catalyst to accelerate curing, thereby forming a film in a short time under mild conditions. However, even if a catalyst is added to try to accelerate curing, the abrasion resistance is not sufficient for a base material such as a resin or a metal.

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a polymer-modified organosilicon compound containing a fluoropolyether group, which can form a water-and oil-repellent layer excellent in abrasion resistance even under mild conditions such as room temperature in a short time, a surface treatment agent comprising the organosilicon compound, and an article surface-treated with the surface treatment agent.

Means for solving the problems

The present inventors have intensively studied to solve the above problems, and as a result, have found that: the surface treatment agent using the polymer-modified organosilicon compound containing a fluoropolyether group represented by the general formula (1) or (2) described later can form a water-and oil-repellent layer excellent in abrasion resistance under mild conditions such as room temperature even if it does not have a hydrolyzable group, and the present invention has been completed.

Accordingly, the present invention provides the following polymer-modified organosilicon compound containing a fluoropolyether group, a surface treatment agent and an article.

[1] A polymer-modified organosilicon compound containing a fluoropolyether group, which is represented by the following general formula (1) or (2) [ formula 1]

[ wherein Rf is a residue of a fluorooxyalkylene group-containing polymer having a valence of 1 or 2, and Y is₁、Y₂Each independently is a single bond or a 2-valent hydrocarbon group, Q independently is a 2-to 4-valent, straight-chain, branched chain or cyclic organosiloxane residue, a silalkylene structure, a silaarylene structure, a diorganosilylene group, a monoorganosilylene group, a silicon atom, a carbon atom, a combination thereof or a combination thereof with an alkylene group, X independently is a glycidyloxy group, a glycidyloxy alkyl group, an alicyclic epoxy group or an alkyl group containing an alicyclic epoxy group, k is an integer of 0 to 2, m is an integer of 1 to 5, n is an integer of 1 to 3, Z independently is a hydrogen atom represented by the following formula

-SiR₃

(wherein R is each independently an alkyl group having 1 to 4 carbon atoms or a phenyl group.)

A triorganosilyl group represented by the formula

-W₁-Q’-W₂-X’

(wherein X' is X or-SiR)₃(R is the same as above), W₁、W₂Each independently a single bond or a 2-valent hydrocarbon group, and Q' is a 2-valent group having a structure selected from the group consisting of diorganosilylene groups, organosiloxane residues, silalkylene structures, silarylene structures, and combinations thereof. )

The group represented, α is 1 or 2. And is indicated.

[2] [1] the fluoropolyether group-containing polymer-modified organosilicon compound according to formula (1) or (2), wherein α is 1 and Rf is a 1-valent fluorooxyalkylene group-containing polymer residue represented by the following general formula (3).

[ solution 2]

(wherein p, q, r and s are each independently an integer of 0 to 200, p + q + r + s is an integer of 3 to 200, each repeating unit may be straight or branched, each repeating unit may be randomly bonded, d is an integer of 1 to 3, and the unit (-C)_dF_2d-) may be linear or branched. )

[3] [1] the fluoropolyether group-containing polymer-modified organosilicon compound according to formula (1) or (2), wherein α is 2 and Rf is a 2-valent fluorooxyalkylene group-containing polymer residue represented by the following general formula (4).

[ solution 3]

(wherein p, q, r and s are each independently an integer of 0 to 200, p + q + r + s is an integer of 3 to 200, each repeating unit may be straight or branched, each repeating unit may be randomly bonded, d is an integer of 1 to 3, and the unit (-C)_dF_2d-) may be each independently linear or branched. )

[4][1]～[3]The polymer-modified organosilicon compound containing a fluoropolyether group according to any one of the above formulae (1) and (2), wherein Y is₁、Y₂Each independently an alkylene group having 2 to 10 carbon atoms.

[5] The polymer-modified organosilicon compound containing a fluoropolyether group according to any one of [1] to [4], wherein Q is a group selected from the group represented by the following formula (1) or (2).

[ solution 4]

(in the formula, R¹Independently an alkyl group having 1 to 4 carbon atoms or a phenyl group, R²Is C1-4 alkylene or C6-12 arylene, R³Is a hydrogen atom or R¹. g is an integer of 1 to 20, and j is an integer of 1 to 8. )

[6] The polymer-modified organosilicon compound containing a fluoropolyether group according to any one of [1] to [5], wherein Z in the formula (1) is at least one selected from a hydrogen atom and a group represented by the following.

[ solution 5]

-Si(CH₃)₃

-Si(CH₂CH₃)₃

[ solution 6]

[ solution 7]

[ solution 8]

(wherein g is an integer of 1 to 20.)

[7] The fluoropolyether group-containing polymer-modified organosilicon compound according to any one of [1] to [6], wherein the fluoropolyether group-containing polymer-modified organosilicon compound represented by the general formula (1) or (2) is represented by any one of the following formulae.

[ solution 9]

[ solution 10]

[ solution 11]

[ solution 12]

[ solution 13]

[ solution 14]

[ solution 15]

[ solution 16]

[ solution 17]

[ solution 18]

(wherein Z is the same as above, p1 is an integer of 5 to 100, q1 is an integer of 5 to 100, p1+ q1 is an integer of 10 to 105, and each repeating unit may be randomly bonded; g is an integer of 1 to 20.)

[8] A surface treatment agent comprising the polymer-modified organosilicon compound containing a fluoropolyether group according to any one of [1] to [7 ].

[9] [8] the surface-treating agent, which further comprises a surfactant represented by the following general formula (5)

[ solution 19]

A-Rf-A (5)

(wherein A is a fluorine atom or a terminal group is-CF)₃The fluorine-containing group having a valence of 1, and Rf' is a residue of a fluorooxyalkylene group-containing polymer having a valence of 2. )

The polymer containing a fluoropolyether group is shown.

[10] An article having a cured coating film of the surface treatment agent according to [9] on the surface thereof.

ADVANTAGEOUS EFFECTS OF INVENTION

The coating film formed from the surface treatment agent containing the polymer-modified organosilicon compound containing a fluoropolyether group of the present invention has high water-and oil-repellency, and particularly, the coating film formed under mild conditions such as room temperature in a short time has excellent abrasion resistance. By treating with the surface treatment agent containing the polymer-modified organosilicon compound containing a fluoropolyether group according to the present invention, various articles can be easily provided with excellent water-and oil-repellency, low dynamic friction property, and abrasion resistance in a short time.

Detailed Description

The polymer-modified organosilicon compound containing a fluoropolyether group of the present invention is represented by the following general formula (1) or (2).

[ solution 20]

[ wherein Rf is a residue of a fluorooxyalkylene group-containing polymer having a valence of 1 or 2, and Y is₁、Y₂Each independently is a single bond or 2A hydrocarbon group having a valence, Q is independently a linear, branched chain or cyclic organosiloxane residue having a valence of 2 to 4, a silylene structure, a diorganosilylene group, a monoorganosilylene group, a silicon atom, a carbon atom, a combination thereof or a combination thereof with an alkylene group, X is independently a glycidyloxy group, a glycidoxyalkyl group, an alicyclic epoxy group or an alkyl group containing an alicyclic epoxy group, k is an integer of 0 to 2, m is an integer of 1 to 5, n is an integer of 1 to 3, Z is independently a hydrogen atom represented by the following formula

-SiR₃

(wherein R is each independently an alkyl group having 1 to 4 carbon atoms or a phenyl group.)

A triorganosilyl group represented by the formula

-W₁-Q’-W₂-X’

(wherein X' is the same as X or-SiR₃(R is the same as above), W₁、W₂Each independently a single bond or a 2-valent hydrocarbon group, and Q' is a 2-valent group having a structure selected from the group consisting of diorganosilylene groups, organosiloxane residues, silalkylene structures, silarylene structures, and combinations thereof. )

The group represented, α is 1 or 2. ]

In the above formulae (1) and (2), when α is 1, Rf is preferably a 1-valent fluorooxyalkyl group represented by the following general formula (3) (that is, a 1-valent fluorooxyalkylene group-containing polymer residue).

[ solution 21]

(wherein p, q, r and s are each independently an integer of 0 to 200, p + q + r + s is an integer of 3 to 200, each repeating unit may be straight or branched, each repeating unit may be randomly bonded, d is an integer of 1 to 3, and the unit (-C)_dF_2d-) may be linear or branched. )

In the above formulae (1) and (2), when α is 2, Rf is preferably a 2-valent fluorooxyalkylene group represented by the following general formula (4) (that is, a 2-valent fluorooxyalkylene group-containing polymer residue).

[ solution 22]

(wherein p, q, r and s are each independently an integer of 0 to 200, p + q + r + s is an integer of 3 to 200, each repeating unit may be straight or branched, each repeating unit may be randomly bonded, d is an integer of 1 to 3, and the unit (-C)_dF_2d-) may be each independently linear or branched. )

In the above formulas (3) and (4), p, q, r, and s are each an integer of 0 to 200, preferably p is an integer of 5 to 100, q is an integer of 5 to 100, r is an integer of 0 to 100, and s is an integer of 0 to 100, and p + q + r + s is an integer of 3 to 200, preferably an integer of 10 to 105, more preferably an integer of 10 to 100, and each repeating unit may be straight or branched, and each repeating unit may be randomly bonded. More preferably, p + q is an integer of 10 to 105, particularly 15 to 60, and r ═ s ═ 0. If p + q + r + s is smaller than the above upper limit, the adhesiveness and film formability are good, and if it is larger than the above lower limit, the characteristics of the fluoropolyether group can be sufficiently exhibited, which is preferable.

In the above formulae (3) and (4), d is an integer of 1 to 3, preferably 1 or 2, and the unit (-C)_dF_2d-) may be linear or branched.

Rf has a main chain structure represented by the above formula (3) or (4), and thus a coating film having a low dynamic friction coefficient can be formed.

Further, compared with a fluoropolyether group-containing polymer-modified organosilicon compound having a fluoropolyether structure (fluorooxyalkylene group-containing polymer residue of valence 1) in the main chain, a linear polymer having an epoxy group at one terminal of the molecular chain and being bonded to each other by a siloxane bond, a silylene bond or a silylene bond (a fluorine-containing polyether group-containing polymer residue of valence 1, Rf being a 1-fluorooxyalkylene group-containing polymer residue represented by the formula (3)), and a linear polymer having an epoxy group at both terminals of the molecular chain and being bonded to each other by a siloxane bond, a silylene bond or a silylene bond (a fluorine-containing polyether group-containing polymer residue of valence 2, Rf being a 2-valent fluorooxyalkylene group-containing polymer residue represented by the formula (4)), the obtained coating film can be provided with excellent abrasion resistance.

Specific examples of Rf include the following groups.

[ solution 23]

F(CF₂O)_p′CF₂-

F(CF₂O)_p′(CF₂CF₂O)_q′CF₂-

F(CF₂O)_p′(CF₂CF₂O)_q′(CF₂CF₂CF₂O)_r′CF₂-

F(CF₂O)_p′(CF₂CF₂O)_q′(CF₂CF₂CF₂CF₂O)_s′CF₂-

F(CF₂O)_p′(CF₂CF₂O)_q′(CF₂CF₂CF₂O)_r′(CF₂CF₂CF₂CF₂O)_s′CF₂-

F(CF₂CF2O)_q′CF₂-

F(CF₂CF₂CF₂O)_r′CF₂CF₂-

-CF₂O(CF₂O)_p′CF₂-

-CF₂O(CF₂O)_p′(CF₂CF₂O)_q′CF₂-

-CF₂O(CF₂O)_p′(CF₂CF₂O)_q′(CF₂CF₂CF₂O)_r′CF₂-

-CF₂O(CF₂O)_p′(CF₂CF₂O)_q′(CF₂CF₂CF₂CF₂O)_s′CF₂-

-CF₂O(CF₂O)_p′(CF₂CF₂O)_q′(CF₂CF₂CF₂O)_r′(CF₂CF₂CF₂CF₂O)_s′CF₂-

-CF₂CF₂O(CF₂CF₂CF₂O)_r′CF₂CF₂-

(wherein p ', q', r ', s' are each an integer of 1 or more, and the upper limit is the same as the upper limit of p, q, r, s. u is an integer of 1 to 24, v is an integer of 1 to 24. the repeating units may be randomly bonded.)

In the above formulae (1) and (2), Y₁、Y₂Independently a single bond or a 2-valent hydrocarbon group, Y₁、Y₂Preferably an alkylene group having 2 to 10 carbon atoms, particularly 2 to 8 carbon atoms such as ethylene, propylene (trimethylene group, methylethylene), butylene (tetramethylene group, methylpropylene group), hexamethylene group, octamethylene group, etc., and particularly preferably ethylene or trimethylene group.

In the above formulae (1) and (2), X is a glycidyloxy group, a glycidoxyalkyl group, an alicyclic epoxy group, or an alkyl group containing an alicyclic epoxy group (for example, glycidyloxy group, 3, 4-epoxycyclohexyl group, 2, 3-epoxycyclohexyl group, γ -glycidoxypropyl group, 3, 4-epoxycyclohexylethyl group, 2, 3-epoxycyclohexylethyl group and the like).

In the above formulae (1) and (2), Q is independently a 2-to 4-valent, linear, branched chain or cyclic organosiloxane residue, a silylene structure, a silarylene structure, a diorganosilylene group, a monoorganosilylene group, a silicon atom, a carbon atom, or a combination thereof with an alkylene group.

Among them, examples of the linear, branched, and cyclic organosiloxane residue, the silylene structure, and the silylarylene structure include the following structures.

[ solution 24]

(in the formula, R¹Independently an alkyl group such as a methyl group, an ethyl group, a propyl group, or a butyl group having 1 to 4 carbon atoms or a phenyl group, R²An alkylene group such as a methylene group, ethylene group, propylene group or butylene group having 1 to 4 carbon atoms or an arylene group such as a phenylene group having 6 to 12 carbon atoms, R³Is a hydrogen atom or R¹. g is an integer of 1 to 20, preferably an integer of 1 to 10, more preferably an integer of 2 to 10, and j is an integer of 1 to 8, preferably an integer of 1 to 3. )

The Q is not only the above-mentioned 2-4 valent, linear, branched chain or cyclic organosiloxane residue, silylene structure, silylarylene structure, diorganosilylene group, monoorganylsilylene group, silicon atom, carbon atom, but also a combination thereof or a combination thereof with an alkylene group, specifically a 2-valent group in which alkylene groups are bonded to each other via a silylene structure or silarylene structure, a 2-4 valent group in which an alkylene group is bonded to a bonding end of a linear, branched or cyclic organosiloxane residue having 2-40, preferably 2-10 silicon atoms and having 2-4 valent silicon atoms, and a combination thereof, preferably a 2-valent group in which alkylene groups are bonded to each other via a silylene structure or silarylene structure, a linear organosiloxane residue having 2-10 silicon atoms and having 2-4 valent silicon atoms, a linear organosiloxane residue having 2-4 silicon atoms, or a linear organosiloxane residue having 2-4 valent silicon atoms, And a group having a valence of 2 to 4, wherein an alkylene group is bonded to the bonding end of the branched organosiloxane residue.

Specific examples of Q include the following groups.

[ solution 25]

(wherein g1 is an integer of 2 to 20, preferably an integer of 2 to 10.)

In the formula (1), Z is independently a hydrogen atom represented by the following formula

-SiR₃

(wherein R is each independently an alkyl group having 1 to 4 carbon atoms or a phenyl group.)

A triorganosilyl group represented by the formula

-W₁-Q’-W₂-X’

(wherein X' is the same as X or SiR₃(R is the same as above), W₁、W₂Each independently a single bond or a 2-valent hydrocarbon group, and Q' is a 2-valent group having a structure selected from the group consisting of diorganosilylene groups, organosiloxane residues (however, the residue may be terminated with a silicon atom or an oxygen atom), silalkylene structures, silarylene structures, and combinations thereof. )

The group shown.

-SiR₃In the formula, R is an alkyl group having 1 to 4 carbon atoms such as a methyl group, an ethyl group, a propyl group, a butyl group, or the like, or a phenyl group, and among them, a methyl group or an ethyl group is preferable.

In addition, -W₁-Q’-W₂in-X', W₁、W₂Each independently a single bond or a 2-valent hydrocarbon group, and examples of the 2-valent hydrocarbon group include alkylene groups having 2 to 10 carbon atoms, particularly 2 to 8 carbon atoms, such as ethylene, propylene (trimethylene, methylethylene), butylene (tetramethylene, methylpropylene), hexamethylene, octamethylene, and the like, and W is a group₁、W₂Preferably a single bond, or ethylene or trimethylene.

X' is a bond with the above X (i.e., glycidyloxy, glycidoxyalkyl, alicyclic epoxy, orAlkyl groups containing alicyclic epoxy groups), or with-SiR₃(R is the same as above), a cyclic or alicyclic epoxy group (for example, glycidyloxy group, 3, 4-epoxycyclohexyl group, 2, 3-epoxycyclohexyl group, γ -glycidoxypropyl group, 3, 4-epoxycyclohexylethyl group, 2, 3-epoxycyclohexylethyl group and the like) is preferable.

Q' is a 2-valent group having a structure selected from the group consisting of a diorganosilylene group, an organosiloxane residue (the end of the residue may be a silicon atom or an oxygen atom), a silylene group structure, a silylarylene group structure, and a combination thereof, and preferably has a 2-valent linear or cyclic organosiloxane residue, a silylene group structure, and a silylene group structure as exemplified above for Q.

Specific examples of Q' include the following groups.

[ solution 26]

(wherein g1 is the same as defined above.)

Specific examples of Z include a hydrogen atom and a group shown below.

[ solution 27]

-Si(CH₃)₃

-Si(CH₂CH₃)₃

[ solution 28]

[ solution 29]

[ solution 30]

(wherein g is the same as above.)

In the formula (1) or (2), α is 1 or 2, and n is an integer of 1 to 3, preferably 1 or 2.

In the formula (2), k is an integer of 0 to 2, preferably 1 or 2, and m is an integer of 1 to 5, preferably 2 or 3.

Examples of the polymer-modified organosilicon compound containing a fluoropolyether group represented by the above formula (1) or (2) include compounds represented by the following formulae. In each of the formulae, the number of repetition (or the degree of polymerization) of each repeating unit constituting the fluorooxyalkyl group (the fluorooxyalkylene group-containing polymer residue having a valence of 1) or the fluorooxyalkylene group (the fluorooxyalkylene group-containing polymer residue having a valence of 2) represented by Rf may be any number satisfying the above-mentioned formulae (3) and (4).

[ solution 31]

[ solution 32]

[ solution 33]

[ chemical 34]

[ solution 35]

[ solution 36]

[ solution 37]

[ solution 38]

[ solution 39]

[ solution 40]

(wherein Z, g is the same as above, p1 is an integer of 5 to 100, q1 is an integer of 5 to 100, and p1+ q1 is an integer of 10 to 105, and the repeating units may be randomly bonded.)

Examples of the method for producing the polymer-modified organosilicon compound containing a fluoropolyether group represented by the formula (1) include the following methods.

First, a polymer containing a fluoropolyether group having a reactive group such as an acid fluoride group, an acid halide group, an acid anhydride group, an ester group, a carboxylic acid group, or an amide group at a molecular chain terminal, a nucleophilic agent for an olefin having an alkenyl group, and a fluorine-containing organic solvent such as 1, 3-bis (trifluoromethyl) benzene or tetrahydrofuran and a non-fluorine-containing organic solvent as a solvent are mixed, and the mixture is cured at 0 to 80 ℃, preferably 50 to 70 ℃, more preferably about 60 ℃ for 1 to 6 hours, preferably 3 to 5 hours, more preferably about 4 hours.

Among these, specific examples of the fluoropolyether group-containing polymer having a reactive group at the molecular chain end include the following polymers.

[ solution 41]

(wherein Rf and. alpha. are the same as defined above.)

Examples of the nucleophilic agent having an olefin such as an alkenyl group include allyl magnesium halide, 3-butenyl magnesium halide, 4-pentenyl magnesium halide, and 5-hexenyl magnesium halide. In addition, corresponding lithium reagents may also be used.

The amount of the nucleophilic agent to be used may be 2 to 5 equivalents, more preferably 2.5 to 3.5 equivalents, and still more preferably about 3 equivalents, based on 1 equivalent of the reactive group of the fluoropolyether group-containing polymer having a reactive group at the molecular chain end.

Subsequently, the reaction is stopped, and the aqueous layer and the organic solvent layer (preferably, a fluorine-based organic solvent layer) are separated by a liquid separation operation. The obtained organic solvent layer is further preferably washed with a non-fluorine-containing organic solvent, and the solvent is distilled off, thereby obtaining a fluoropolyether group-containing polymer having a hydroxyl group and an olefin moiety at the molecular chain end represented by the following formula (a).

[ solution 42]

(wherein Rf and. alpha. are the same as defined above and U is a 2-valent hydrocarbon group.)

In the formula (a), U is a 2-valent hydrocarbon group, and specific examples thereof include an alkylene group having 1 to 8 carbon atoms such as a methylene group, an ethylene group, a propylene group (trimethylene group, methylethylene group), a butylene group (tetramethylene group, methylpropylene group), a hexamethylene group, an octamethylene group and the like, an alkylene group containing an arylene group having 6 to 8 carbon atoms such as a phenylene group and the like (for example, an alkylene-arylene group having 7 to 8 carbon atoms and the like), and the like. U is preferably a linear alkylene group having 1 to 4 carbon atoms.

Then, the hydrogen atom of the hydroxyl group of the fluoropolyether group-containing polymer having a hydroxyl group and an olefin site at the molecular chain end, represented by the above-obtained formula (a), is substituted with another group as necessary.

As a radical of a hydroxyl groupSubstitution of a hydrogen atom by-SiR₃The silyl group-containing polymer having a hydroxyl group and an olefin moiety at the end of the molecular chain represented by formula (a) and a silylating agent are cured at 0 to 80 ℃, preferably 40 to 60 ℃, more preferably about 50 ℃ for 1 to 24 hours, preferably 2 to 10 hours, and more preferably about 3 hours, in the presence of an alkali such as an amine or an alkali metal base, using a solvent such as a fluorine-containing organic solvent or a non-fluorine-containing organic solvent, if necessary.

In another method, the polymer having a hydroxyl group and an olefin site at the molecular chain end and containing a fluoropolyether group represented by the formula (a) and hydrosilane are subjected to a dehydrogenation reaction at a temperature of 0 to 60 ℃, preferably 15 to 35 ℃, more preferably about 25 ℃ for 10 minutes to 24 hours, preferably 30 minutes to 2 hours, more preferably about 1 hour, using a solvent such as a fluorine-based organic solvent or a non-fluorine-based organic solvent in the presence of a dehydrogenation catalyst such as a platinum group metal catalyst or a boron catalyst.

Among them, as the silylating agent, for example, halosilane, silyltrifluoromethanesulfonate, etc. can be used, and specific examples thereof include trimethylchlorosilane, triethylchlorosilane, t-butyldimethylchlorosilane, triisopropylchlorosilane, triphenylchlorosilane, trimethylbromosilane, trimethylsilyltrifluoromethanesulfonate, triethylsilyltrifluoromethanesulfonate, t-butyldimethylsilyltrifluoromethanesulfonate, triisopropylsilyltrifluoromethanesulfonate, etc., and further, hexamethyldisilazane, trimethylsilyldimethylamine, trimethylsilyldiethylamine, trimethylsilylimidazole can be used without using a base, and the amount of the silylating agent used is 1 equivalent to the hydroxyl group of the fluoropolyether group-containing polymer having a hydroxyl group and an olefin portion at the molecular chain end represented by the formula (a), 1 to 10 equivalents can be used, more preferably 1 to 4 equivalents, and still more preferably about 2 equivalents.

Further, examples of the hydrosilane include trimethylsilane, triethylsilane, t-butyldimethylsilane, triisopropylsilane, triphenylsilane, and the amount of the hydrosilane used is 1 to 5 equivalents, more preferably 1.5 to 3 equivalents, and still more preferably about 2 equivalents, relative to 1 equivalent of the hydroxyl group of the fluoropolyether group-containing polymer having a hydroxyl group and an olefin portion at the molecular chain end represented by formula (a).

Subsequently, the reaction is stopped, and the aqueous layer and the organic solvent layer (preferably, a fluorine-based organic solvent layer) are separated by a liquid separation operation. The obtained organic solvent layer is preferably further washed with a non-fluorine-containing organic solvent, and the solvent is distilled off, whereby a fluorine-containing polyether group-containing polymer having a silyl group and an olefin portion at the molecular chain end represented by the following formula (b) is obtained.

[ solution 43]

(wherein Rf, R, U and. alpha. are the same as defined above.)

In addition, the hydrogen atom of the hydroxyl group is replaced by-W₁-Q’-W₂Method for the group represented by-X ', for example, for a fluoropolyether group-containing polymer having a hydroxyl group and an olefin site at the molecular chain end represented by the formula (a) and a polymer having an SiH group and represented by-Q' -W₂An organosilicon compound of a group represented by-X 'is subjected to a dehydrogenation reaction at a temperature of 0 to 60 ℃, preferably 15 to 35 ℃, more preferably about 25 ℃ for 10 minutes to 24 hours, preferably 30 minutes to 2 hours, more preferably about 1 hour, in the presence of a dehydrogenation catalyst such as a boron catalyst using a solvent such as a fluorine-containing organic solvent or a non-fluorine-containing organic solvent, or a reaction between a hydroxyl group of a polymer having a fluoropolyether group at a molecular chain end and an olefin portion represented by formula (a) and a diorganohydrosilyl group (e.g., -Si (CH) at both ends represented by, for example, H-Q' -H₃)₂H, etc.) under the same conditions as described above, the SiH group at one terminal of the 2-functional organosiloxane compound, the organosilicoalkylene compound, or the organosilicoarylene compound having a terminal group is reacted with a hydrogen atom of a hydroxyl group under a temporary change to-Q ' -H, etc., and then the SiH group at the other terminal is reacted with an alkenyl group of a compound having an alkenyl group and an X ' group in the molecule (that is, an aliphatic unsaturated compound in which the terminal of the X ' group is terminated with an alkenyl group) in a usual silicon hydrideAddition under alkylation conditions to enable eventual substitution to-W₁-Q’-W₂-X' radical.

Wherein the compound has SiH group and is represented by the formula-Q' -W₂Examples of the organosilicon compound of the group represented by-X 'and the 2-functional organosiloxane compound, organosilicon alkylene compound and organosilicon arylene compound each having both ends capped with a diorganohydrogensilyl group represented by H-Q' -H include the following compounds.

[ solution 44]

(wherein g is the same as above, e is an integer of 0 to 3, and c is an integer of 1 to 4.) the amount of these compounds used can be 1 to 10 equivalents, more preferably 1.2 to 5 equivalents, based on 1 equivalent of the hydroxyl group of the fluoropolyether group-containing polymer having a hydroxyl group and an olefin moiety at the molecular chain end represented by formula (a).

Examples of the compound having an alkenyl group and an X' group in the molecule include allyl glycidyl ether, 1, 2-epoxy-4-vinylcyclohexane, and 1, 2-epoxy-3-vinylcyclohexane.

The amount of the fluorine-containing polyether group-containing polymer having a hydroxyl group and an olefin portion at the molecular chain end represented by the formula (a) can be 1 to 10 equivalents, and more preferably 1.1 to 4 equivalents, based on 1 equivalent of the terminal SiH group of the reactant of the compound having both terminals capped with diorganohydrogensilyl groups.

Subsequently, the reaction is stopped, and the aqueous layer and the organic solvent layer (preferably, a fluorine-based organic solvent layer) are separated by a liquid separation operation. The obtained organic solvent layer is further preferably washed with a non-fluorine-containing organic solvent, and the solvent is distilled off to obtain a fluoropolyether group-containing polymer represented by the following formula (c) having an olefin portion at the molecular chain end and having a hydroxyl group portion substituted with an organosilicon compound group.

[ solution 45]

(wherein Rf, Q', W₂X', U, alpha are as defined above, W₁' is a single bond. )

Further, the hydrogen atom of the hydroxyl group is substituted by-W₁-Q’-W₂As another method for the method of producing the group represented by-X', for example, the following methods can be cited: first, a hydrogen atom of a hydroxyl group in a fluoropolyether group-containing polymer having a hydroxyl group and an olefin site at a molecular chain end represented by formula (a) is substituted with a terminal unsaturated group, and then the terminal unsaturated group (olefin site) is reacted with an organosilicon compound having an SiH group together with other olefin sites.

As a method of substituting a hydrogen atom of a hydroxyl group for a terminal unsaturated group, for example, a fluorine polyether group-containing polymer having a hydroxyl group and an olefin site at a molecular chain terminal represented by the formula (a) and an olefin introducing agent are subjected to aging at a temperature of 0 to 90 ℃, preferably 60 to 80 ℃, more preferably about 70 ℃ for 1 to 25 hours, preferably 3 to 10 hours, more preferably 5 to 8 hours, in the presence of an alkali such as an amine or an alkali metal base, if necessary, using an additive such as tetrabutylammonium halide or an alkali metal halide for improving reactivity, a fluorine-based organic solvent, a non-fluorine-based organic solvent, or the like.

Among them, as the olefin introducing agent, for example, allyl halide can be used, and specific examples thereof include allyl chloride, allyl bromide, allyl iodide, 4-chloro-1-butene, 4-bromo-1-butene, 4-iodo-1-butene, 5-chloro-1-pentene, 5-bromo-1-pentene, 5-iodo-1-pentene and the like, and the amount of the olefin introducing agent used is 1 to 10 equivalents, more preferably 2.5 to 6 equivalents, and still more preferably about 5 equivalents, based on 1 equivalent of the hydroxyl group of the fluoropolyether group-containing polymer having a hydroxyl group and an olefin site at the molecular chain end represented by the formula (a).

Subsequently, the reaction is stopped, and the aqueous layer and the organic solvent layer (preferably, a fluorine-based organic solvent layer) are separated by a liquid separation operation. The obtained organic solvent layer is further preferably washed with a non-fluorine-containing organic solvent, and the solvent is distilled off to obtain a fluoropolyether group-containing polymer having an olefin portion at the molecular chain end represented by the following formula (d).

[ solution 46]

(wherein Rf, U and. alpha. are the same as those described above and V is a single bond or a 2-valent hydrocarbon group.)

In the formula (d), V is a single bond or a hydrocarbon group having a valence of 2, and specific examples of the hydrocarbon group having a valence of 2 include an alkylene group having 1 to 8 carbon atoms such as a methylene group, an ethylene group, a propylene group (trimethylene group, methylethylene group), a butylene group (tetramethylene group, methylpropylene group), a hexamethylene group, an octamethylene group, etc., an alkylene group containing an arylene group having 6 to 8 carbon atoms such as a phenylene group (for example, an alkylene-arylene group having 7 to 8 carbon atoms, etc.), etc. The group V is preferably a methylene group.

Next, any of the resulting polymers containing a fluoropolyether group having an olefin moiety at the molecular chain end represented by the formulae (a) to (d) and an organosilicon compound having 2 or more SiH groups in the molecule are cured at a temperature of 40 to 120 ℃, preferably 60 to 100 ℃, more preferably about 80 ℃ for 1 to 72 hours, preferably 3 to 36 hours, more preferably 5 to 24 hours in the presence of a hydrosilylation catalyst such as a toluene solution of chloroplatinic acid/vinylsiloxane complex.

Among these, as the organosilicon compound having 2 or more SiH groups in the molecule, a compound represented by the following formula is preferable.

[ solution 47]

(in the formula, R¹、R²And g and j are the same as above, i is an integer of 2 to 4, preferably 2, and i + j is an integer of 3 to 10, preferably 3 to 5. )

Examples of the organosilicon compound having 2 or more SiH groups in a molecule include organosilicon compounds described below.

[ solution 48]

(wherein g1 is the same as defined above.)

The amount of the organosilicon compound having 2 or more SiH groups in the molecule is 1 to 15 equivalents, more preferably 1.1 to 10 equivalents, and still more preferably 1.2 to 6 equivalents, based on 1 equivalent of the terminal aliphatic unsaturated group of the fluoropolyether group-containing polymer having an olefin portion at the molecular chain terminal represented by the above formulae (a) to (d).

Further, a reaction product of any one of the obtained fluoropolyether group-containing polymers having an olefin moiety at the molecular chain end represented by the formulae (a) to (d) and an organosilicon compound having 2 or more SiH groups in the molecule, and a compound having an olefin moiety and an epoxy group at the molecular chain end are cured at a temperature of 40 to 120 ℃, preferably 60 to 100 ℃, more preferably about 80 ℃ for 5 to 48 hours, preferably 6 to 36 hours, more preferably 7 to 24 hours in the presence of a hydrosilylation reaction catalyst such as a toluene solution of chloroplatinic acid/vinylsiloxane complex.

Among them, examples of the compound having an olefin site and an epoxy group at a molecular chain end include allyl glycidyl ether, 1, 2-epoxy-4-vinylcyclohexane, 1, 2-epoxy-3-vinylcyclohexane, and the like.

The amount of the compound having an olefin moiety and an epoxy group at the molecular chain end can be 1 to 15 equivalents, more preferably 1.1 to 10 equivalents, and still more preferably 1.2 to 6 equivalents, based on 1 equivalent of the terminal SiH group of the reactant of the fluoropolyether group-containing polymer having an olefin moiety at the molecular chain end represented by the formulae (a) to (d) obtained above and the organosilicon compound having 2 or more SiH groups in the molecule.

Then, the solvent and the unreacted material are distilled off under reduced pressure, whereby a polymer-modified organosilicon compound containing a fluoropolyether group represented by the above formula (1) can be obtained. The above reaction may be carried out either singly or continuously.

Next, as a method for producing a fluoropolyether group-containing polymer-modified organosilicon compound represented by the above formula (2), for example, in addition to using a fluoropolyether group-containing polymer having 1 olefin site at each of the terminal sites of either one end of the molecular chain (α ═ 1) or both ends of the molecular chain (α ═ 2) instead of the fluoropolyether group-containing polymers having olefin sites at the molecular chain terminals represented by the formulas (a) to (d) described in the production method of the fluoropolyether group-containing polymer-modified organosilicon compound represented by the above formula (1) (i.e., fluoropolyether group-containing polymers having 2 (formulas (a), (b) or (c)) or 3 (formula (d)) olefin sites at each of one end of the molecular chain (α ═ 1) or both ends of the molecular chain (α ═ 2)), can be produced by the same method as that described in the production method of the polymer-modified organosilicon compound containing a fluoropolyether group represented by the above formula (1).

Among these, as a fluoropolyether group-containing polymer having 1 olefin site at each terminal site of a single terminal (α ═ 1) of the molecular chain or at each terminal site of both terminals (α ═ 2) of the molecular chain, specifically, the following polymers can be mentioned.

[ solution 49]

Rf-CH₂-O-CH₂-CH＝CH₂

Rf-CH₂-O-CH₂-CH₂-CH＝CH₂

CH₂＝CH-CH₂-O-CH₂-Rf-CH₂-O-CH₂-CH＝CH₂

CH₂＝CH-CH₂-CH₂-O-CH₂-Rf-CH₂-O-CH₂-CH₂-CH＝CH₂

(wherein Rf is the same as defined above.)

The surface treatment agent of the present invention contains a polymer-modified organosilicon compound containing a fluoropolyether group represented by the above formula (1) or (2).

The surface treating agent of the present invention may further contain a surfactant represented by the following general formula (5)

[ solution 50]

A-Rf-A (5)

(wherein A is a fluorine atom or the terminal is-CF)₃The fluorine-containing group having a valence of 1, and Rf' is a residue of a fluorooxyalkylene group-containing polymer having a valence of 2. )

The polymer containing a fluoropolyether group (hereinafter referred to as "non-functional polymer") is described.

In the above formula (5), A is a fluorine atom or the terminal is-CF₃The 1-valent fluorine-containing group of the group is preferably a fluorine atom or a linear perfluoroalkyl group having 1 to 6 carbon atoms, and among them, a-F group or a-CF group is preferable₃Radical, -CF₂CF₃Radical, -CF₂CF₂CF₃And (4) a base.

Rf 'is a 2-valent fluorooxyalkylene group-containing polymer residue, and preferable Rf' is a group represented below.

[ solution 51]

(wherein p2 is an integer of 5 to 200, preferably 10 to 100, q2 is an integer of 5 to 200, preferably 10 to 100, r1 is an integer of 10 to 200, preferably 20 to 100, t1 is an integer of 5 to 200, preferably 10 to 100, t2 is an integer of 10 to 200, preferably 20 to 100, t1+ p2 is an integer of 10 to 205, preferably 20 to 110, q2+ p2 is an integer of 10 to 205, preferably 20 to 110.) the repeating units may be randomly bonded.)

The non-functional polymer represented by the formula (5) includes the following polymers.

[ solution 52]

(wherein p2, q2, r1, t1 and t2 are the same as those mentioned above; the respective repeating units may be randomly bonded.)

The amount of the non-functional polymer represented by the formula (5) to be used is not particularly limited, but is preferably in the range of 0.1 to 60% by mass, particularly preferably 10 to 40% by mass, based on the mass of the polymer-modified organosilicon compound containing a fluoropolyether group represented by the formula (1) or (2), and if too much, there may be a problem of adhesion.

The surface treatment agent may comprise a suitable solvent. Examples of such solvents include fluorine-modified aliphatic hydrocarbon solvents (e.g., perfluoroheptane, perfluorooctane, etc.), fluorine-modified aromatic hydrocarbon solvents (e.g., hexafluorometaxylene (1, 3-bis (trifluoromethyl) benzene), benzylic trifluoro-benzene, etc.), fluorine-modified ether solvents (e.g., methyl perfluorobutyl ether, ethyl perfluorobutyl ether, perfluoro (2-butyltetrahydrofuran), etc.), fluorine-modified alkylamine solvents (e.g., perfluorotributylamine, perfluorotripentylamine, etc.), hydrocarbon solvents (e.g., petroleum spirit, mineral spirit, toluene, xylene, etc.), and ketone solvents (e.g., acetone, methyl ethyl ketone, methyl isobutyl ketone, etc.). Among these, solvents modified with fluorine are preferable in terms of solubility, wettability, and the like, and hexafluorom-xylene, perfluoro (2-butyltetrahydrofuran), perfluorotributylamine, and ethyl perfluorobutyl ether are particularly preferable.

The solvent may be a mixture of 2 or more kinds thereof, and preferably the polymer-modified organosilicon compound containing a fluoropolyether group represented by the formula (1) or (2) and the nonfunctional polymer represented by the formula (5) are uniformly dissolved. The optimum concentration of the fluorooxyalkylene group-containing polymer dissolved in the solvent varies depending on the treatment method, but is preferably 0.01 to 40% by mass, particularly preferably 0.05 to 25% by mass, in the surface-treating agent.

The substrate to be treated with the surface treatment agent of the present invention is not particularly limited, and may be a substrate made of various materials such as paper, cloth, metal and its oxide, glass, plastic, ceramic, and quartz.

The surface treatment agent of the present invention can impart excellent water-and oil-repellency to the above base material. Particularly, resin products such as resin films and spectacle lenses exhibit excellent water-and oil-repellency. Among them, as the resin article, a resin article made of a thermoplastic resin is preferable, and specifically, a thermoplastic resin film (hard coat film) treated with a hard coat layer, a thermoplastic resin film (high hardness resin film) having a pencil hardness of 4H or more and not provided with a hard coat layer, a thermoplastic resin film (antireflection film) having an antireflection layer, or the like is preferably used.

In the present invention, the coating composition can be applied to a metal substrate and exhibits good adhesion to a duralumin alloy or the like.

The surface treatment agent of the present invention can be applied to a substrate by a known method such as brush coating, dipping, spraying, or vapor deposition. The heating method in the vapor deposition treatment may be a resistance heating method or an electron beam heating method, and is not particularly limited. The post-treatment conditions vary depending on the post-treatment method, and for example, in the case of application by vapor deposition or spray coating, SiO-coated is used₂When the treated resin film is used as a substrate, the resin film can be set to a temperature range of room temperature (25 ℃) to 200 ℃, 5 minutes to 36 hours, particularly 10 minutes to 24 hours, and post-treatment can be performed under humidification. In particular, in the present invention, even at room temperature, it is sufficient to take 10 minutes to 36 hours, particularly 30 minutes to 24 hours. The film thickness of the coating film is suitably selected depending on the type of the substrate, and is usually 0.1 to 100nm, particularly 1 to 25 nm.

The article treated with the surface treatment agent of the present invention is preferably used as a part or a part of an article such as a car navigation system, a mobile phone, a digital camera, a digital video camera, a PDA, a portable audio player, a car audio, a game machine, a spectacle lens, a camera lens, a lens filter, a sunglass, a gastroscope, or the like, a copier, a PC, a liquid crystal display, an organic EL display, a plasma display, a touch panel display, a protective film, a hard coat film, a high-hardness resin, an antireflection film, a wearable terminal, or the like, an optical article, a touch panel, an antireflection film, a quartz substrate, or the like.

The surface treatment agent of the present invention can form a coating film on the above-mentioned article in a short time even under mild conditions such as room temperature, and the coating film exhibits excellent water-and oil-repellency and durability, and thus is useful particularly as a water-and oil-repellent layer for spectacle lenses, touch panel displays, hard coating films, high-hardness resins, antireflection films, wearable terminals, and the like. The high-hardness resin is a resin molded product having a pencil hardness of 4H or more, such as a trade name シルプラス manufactured by nippon iron chemical corporation and a trade name HD film manufactured by グンゼ corporation, which are PR-substituted glass films, and particularly a resin film molded from the resin, and is not particularly limited to the above-mentioned products.

Articles having a surface layer formed with antifouling properties using the surface treatment agent comprising the fluoropolyether group-containing polymer-modified organosilicon compound of the present invention can exhibit excellent wear durability. The resin having an antifouling surface layer formed by the surface treatment agent of the present invention can be suitably used for applications requiring surface antifouling treatment, such as spectacle lenses, sunglasses, touch panel displays, and antireflection films.