JP2000302972A - Coating composition for vehicle window and vehicle window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject coating composition excellent in storage stability and capable of forming coating film improved in stain resistance, etc., without lowering adhesiveness, etc., by including a specific organosilane component and fluorine-based polymer having a silyl group. SOLUTION: This composition comprises (A) an organosilane (hydrolyzate or condensation product) of the formula (R1)nSi(OR2)4.n [R1 is a 1-8C monovalent organic group; R2 is a 1-5C alkyl or a 1-6C acyl; (n) is 0 to 2] and (B) a polymer having a unit of formula I [R3 to R5 are each CmY2m+1 [(m) is 0-5; Y is F, H or Cl] and/or a unit of formula II (Rf is an alkyl or alkoxyalkyl containing F) and having a silyl group having Si to which a hydrolyzable group and/or hydroxyl group is bonded. The amount of the component B used is 20-500 pts.wt., preferably 25-400 pts.wt., more preferably 50-300 pts.wt. when an amount of the component A is defined as 100 pts.wt. expressed on terms of the unit of the formula (R1)nSiO(4.n)/2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating composition for a vehicle window which has an antifouling function by water repellency and oil repellency and is excellent in durability and abrasion resistance. The present invention relates to an organosilane-based coating composition for vehicle windows containing a polymer.

[0002]

2. Description of the Related Art The technical development of organosilane-based coating materials has been promoted as maintenance-free coating materials having excellent weather (light) resistance and stain resistance. The performance requirements for such organosilane-based coating materials are becoming more and more severe. In recent years, coating film appearance, adhesion, weather resistance, heat resistance, alkali resistance, organic chemical resistance, moisture resistance, (temperature) resistance There is a need for a coating material that is excellent in water-based properties, insulation resistance, abrasion resistance, stain resistance, and the like, and that can form a coating film having high hardness.

In particular, in order to improve the stain resistance, it has been recognized that it is better to make the surface of the coating film hydrophilic. However, this is a treatment performed for the purpose of improving the stain recovery property (cleanability). The effect of the anti-staining property can be obtained only when the resilience of the contaminants exceeds the amount of the contaminants attached. On the other hand, according to the method for imparting water repellency and oil repellency to the coating film, the adhesion to the coating film can be reduced regardless of whether the contaminant is hydrophilic or lipophilic. Conventionally, water and oil repellency is imparted to a coating film by adding an oil or a surfactant, but it is difficult to maintain stain resistance for a long time by such a method.

On the other hand, as a coating composition which satisfies the required performance of an organosilane-based coating material to some extent, a composition comprising a partial condensate of an organosilane, a dispersion of colloidal silica, and a silicone-modified acrylic resin (Japanese Patent Laid-Open No. 60-1985). JP-A-135465), a composition containing a condensate of an organosilane, a chelate compound of zirconium alkoxide and a vinyl resin having a hydrolyzable silyl group (JP-A-64-1769), a condensate of an organosilane, colloid A composition comprising alumina and a hydrolyzable silyl group-containing vinyl resin (US Pat. No. 4,904,721) has been proposed.

However, Japanese Patent Application Laid-Open No. Sho 60-1354 discloses
Coatings obtained from the compositions described in JP-A-65 and US Pat. No. 4,904,721 have the disadvantage that gloss is reduced by prolonged irradiation with ultraviolet light.
Further, the composition described in the above-mentioned JP-A-64-1769 has a problem that storage stability is not sufficient, and gelation easily occurs in a short period of time when the solid content concentration is increased.

Further, the applicant of the present application has already disclosed a hydrolyzate of organosilane and / or a partial condensate thereof, a vinyl resin having a hydrolyzable and / or silyl group having a silicon atom bonded to a hydroxyl group, and a metal chelate. A coating composition containing a compound and β-diketones and / or β-ketoesters
345877). This composition is:
Although excellent in the balance of the above-mentioned coating film performance required for the organosilane-based coating material, a new material which newly imparts water repellency, oil repellency, slipperiness and the like to these performances is strongly demanded.

On the other hand, Japanese Unexamined Patent Publication No. 9-227159 proposes a window glass for an automobile having a layer containing a photocatalytic semiconductor material on the surface of a substrate. However,
This technology utilizes the superhydrophilicity of the photocatalyst,
The effect is not exhibited unless light is applied, and at the same time, the effect of washing with water is expected. Therefore, the effect is hardly obtained unless the condition is rain or washing with water.

[0008]

The present invention contains a specific organosilane component and a fluoropolymer having a silyl group, has excellent storage stability, and has excellent adhesion, alkali resistance,
An object of the present invention is to provide a coating composition for a vehicle window capable of forming a coating film having improved stain resistance without reducing organic chemical resistance, weather resistance, moisture resistance, (hot) water resistance and the like. . Further, the present invention provides a coating composition for a vehicle window which has an antifouling function due to excellent water repellency and oil repellency, has excellent durability and abrasion resistance, and can form a high hardness coating film. Is to do.

[0009]

The present invention provides (i) (a)
The following general formula (1) (R¹)_nSi (OR^Two)_4-n ... (1) (where R¹Are the same or different when there are two,
A monovalent organic group having 1 to 8 carbon atoms;^TwoAre the same or
Differently, an alkyl group having 1 to 5 carbon atoms or 1 to 6 carbon atoms
Wherein n is an integer of 0 to 2. )
Organosilane, a hydrolyzate of the organosilane,
And at least one selected from the group of condensates of the organosilane.
And (b) (b-1) the following general formula (2)
(Hereinafter also referred to as “(b-1) structural unit”)
Say), (Where R^Three~ R^FiveIs C_mY_{2m + 1}, M = an integer from 0 to 5,
Y is independently selected from F, H and Cl
You. ) And / or (b-2) represented by the following general formula (3).
Constituent unit (hereinafter also referred to as “(b-2) constituent unit”)
U)Wherein Rf is an alkyl group containing a fluorine atom or
A oxyalkyl group;^Three~ R^FiveIs the general formula (2)
It is synonymous and, within the same meaning, R of the general formula (2) ^Three~ R
^FiveAnd may be different. ] And hydrolyzable
Having a silicon atom bonded to a group and / or a hydroxyl group
Polymers containing a silyl group (hereinafter referred to as “silyl group-containing fluorine-based polymer”
For vehicle windows characterized by containing
The present invention provides a coating composition. In addition,
Akira puts the vehicle window coating on the surface of the vehicle window base material.
A vehicle window having a coating film composed of
is there. Further, the present invention, the surface of the vehicle window substrate, the following
A coating film comprising the composition of (i) or (ii),
On top, a coating film comprising the above-mentioned vehicle window coating composition
It is intended to provide a vehicle window characterized by having a vehicle window. (I) component (a), and (b ') water and / or
Or a coating composition containing an organic solvent (hereinafter referred to as “
Product (i) "). (Ii) The above component (a) and (b ″) a hydrolyzable group
And / or silicon compounds having a silicon atom bonded to a hydroxyl group.
Polymers containing a silyl group (hereinafter "silyl group-containing polymers")
(Hereinafter referred to as “composition”).
Object (ii) ”).

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, each component constituting the coating composition of the present invention will be described sequentially. Component (a) for coating composition for vehicle windows ; The component (a) blended in the coating composition of the present invention is an organosilane represented by the above general formula (1) (hereinafter also referred to as “organosilane (1)”). ), A hydrolyzate of organosilane (1), and a condensate of organosilane (1).
That is, the component (a) may be only one of these three types, or may be a mixture of any two types.
It may be a mixture containing all types. Here, the hydrolyzate of the organosilane (1) does not need to have all the OR ² groups contained in the organosilane (1) hydrolyzed. For example, only one is hydrolyzed. Or two or more of them may be hydrolyzed, or a mixture thereof. The condensate of the organosilane (1) is formed by condensing a silanol group of a hydrolyzate of the organosilane (1) to form a Si—O—Si bond. It is not necessary that they are all condensed, and the concept encompasses those in which a small portion of silanol groups are condensed, and mixtures of those having different degrees of condensation.

In the general formula (1), R ¹ has 1 to ¹ carbon atoms.
Examples of the monovalent organic group of 8 include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group,
i-butyl group, sec-butyl group, t-butyl group, n-
Hexyl group, n-heptyl group, n-octyl group, alkyl group such as 2-ethylhexyl group, acetyl group, propionyl group, butyryl group, valeryl group, benzoyl group, acyl group such as trioil group, vinyl group, allyl group, Examples thereof include a cyclohexyl group, a phenyl group, a glycidyl group, a (meth) acryloxy group, a ureide group, an amide group, a fluoroacetamide group, an isocyanate group, and the like, and substituted derivatives of these groups.

Examples of the substituent in the substituted derivative of R ¹ include a halogen atom, a substituted or unsubstituted amino group, a hydroxyl group, a mercapto group, an isocyanate group, a glycidoxy group, a 3,4-epoxycyclohexyl group, a (meth) An acryloxy group, a ureido group, an ammonium base and the like can be mentioned. However, the carbon number of R ¹ composed of these substituted derivatives is 8 or less including the carbon atom in the substituent. When two R ¹ are present in the general formula (1), they may be the same or different from each other.

Examples of the alkyl group having 1 to 5 carbon atoms for R ² include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, a sec-butyl group and a t-butyl group. And an acyl group having 1 to 6 carbon atoms, for example, an acetyl group, a propionyl group, a butyryl group, a valeryl group, a caproyl group, and the like. A plurality of R ² in the general formula (1) may be the same or different from each other.

Specific examples of the organosilane (1) include tetraalkoxysilanes such as tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetra-i-propoxysilane, tetra-n-butoxysilane and the like. Class: methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane,
Ethyltriethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, i-propyltrimethoxysilane, i-propyltriethoxysilane, n-butyltrimethoxysilane, n-butyltriethoxysilane, n-pentyl Trimethoxysilane, n-
Hexyltrimethoxysilane, n-heptyltrimethoxysilane, n-octyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, cyclohexyltrimethoxysilane, cyclohexyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, 3 -Chloropropyltrimethoxysilane, 3-chloropropyltriethoxysilane, 3,
3,3-trifluoropropyltrimethoxysilane,
3,3,3-trifluoropropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 2-hydroxyethyltrimethoxysilane, 2-hydroxyethyltriethoxysilane, 2-hydroxypropyltriethoxysilane Methoxysilane, 2-hydroxypropyltriethoxysilane, 3-
Hydroxypropyltrimethoxysilane, 3-hydroxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-isocyanatopropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, 3- Glycidoxypropyltrimethoxysilane,
3-glycidoxypropyltriethoxysilane, 2-
(3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltriethoxysilane, 3- (meth) acryloxypropyltrimethoxysilane, 3- (meth) atacryloxypropyltri Trialkoxysilanes such as ethoxysilane, 3-ureidopropyltrimethoxysilane and 3-ureidopropyltriethoxysilane; dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane,
n-propyldimethoxysilane, di-n-propyldiethoxysilane, di-i-propyldimethoxysilane, di-i-propyldiethoxysilane, di-n-butyldimethoxysilane, di-n-butyldiethoxysilane, −
n-pentyldimethoxysilane, di-n-pentyldiethoxysilane, di-n-hexyldimethoxysilane, di-n-hexyldiethoxysilane, di-n-heptyldimethoxysilane, di-n-heptyldiethoxysilane,
In addition to dialkoxysilanes such as di-n-octyldimethoxysilane, di-n-octyldiethoxysilane, di-n-cyclohexyldimethoxysilane, di-n-cyclohexyldiethoxysilane, diphenyldimethoxysilane and diphenyldiethoxysilane , Methyltriacetyloxysilane, dimethyldiacetyloxysilane, and the like.

Of these, trialkoxysilanes,
Dialkoxysilanes are preferable, and trialkoxysilanes are preferably methyltrimethoxysilane and methyltriethoxysilane. Further, dialkoxysilanes are preferably dimethyldimethoxysilane and dimethyldiethoxysilane.

In the present invention, as the organosilane (1), particularly, trialkoxysilane alone or
A combination of 40 to 95 mol% of trialkoxysilane and 60 to 5 mol% of dialkoxysilane is preferred. By using dialkoxysilane in combination with trialkoxysilane, the resulting coating film can be softened and alkali resistance can be improved.

The organosilane (1) is used as it is or as a hydrolyzate and / or condensate. When the organosilane (1) is used as a hydrolyzate and / or condensate, it can be hydrolyzed and condensed in advance and used as the component (a). However, as described later, the organosilane (1) is When mixing with the remaining components to prepare the composition, by adding an appropriate amount of water, the organosilane (1) is hydrolyzed and condensed,
It is preferable to use the component (a). When the component (a) is used as a condensate, the condensate preferably has a weight average molecular weight in terms of polystyrene (hereinafter also referred to as “Mw”) of 800 to 100,000, more preferably 1,
000 to 50,000.

The commercial products of the component (a) include MKC silicate manufactured by Mitsubishi Chemical Corporation, ethyl silicate manufactured by Colcoat, silicon resin manufactured by Dow Corning Toray, and silicone resin manufactured by Toshiba Silicone Co., Ltd. , Silicon resin manufactured by Shin-Etsu Chemical Co., Ltd., silicon oligomer manufactured by Nippon Yunika Co., Ltd.
Alternatively, they may be used after condensation.

In the present invention, the component (a) can be used alone or in combination of two or more.

(B) a silyl group-containing fluoropolymer; the component (b) in the present invention is at least one structural unit selected from the structural units (b-1) and (b-2). And a silyl group having a silicon atom bonded to a hydrolyzable group and / or a hydroxyl group (hereinafter, referred to as a silyl group)
Preferably, it is a fluoropolymer having a specific silyl group at the terminal and / or side chain of the polymer molecular chain. Such a component (b) is
When a coating film obtained from the coating composition of the present invention is cured, a hydrolyzable group and / or a hydroxyl group in the silyl group is co-condensed with the component (a),
Excellent coating performance can be provided. The amount of the silicon atom in the component (b) is usually 0.1% in the component (b).
It is 001 to 20% by weight, preferably 0.01 to 15% by weight.

The specific silyl group preferably has the following general formula (4) (Wherein, X represents a hydrolyzable group such as a halogen atom, an alkoxy group, an acetoxy group, a phenoxy group, a thioalkoxy group, an amino group or a hydroxyl group, and R ⁶ represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or And represents an aralkyl group having 1 to 10 carbon atoms, and i is an integer of 1 to 3).

The component (b) is a monomer that constitutes the structural unit (b-1) represented by the general formula (2) (hereinafter, also referred to as “(b-1) monomer”). And / or a monomer (hereinafter also referred to as “(b-2) monomer”) constituting the (b-2) structural unit represented by the general formula (3), Obtained by polymerizing (b-3) a monomer containing a silicon atom bonded to a hydrolyzable group and / or a hydroxyl group, which constitutes a (b-3) specific silyl group represented by 4), and And, if necessary, (b-4) another monomer copolymerizable with these monomers (hereinafter referred to as “(b-4)
). The (b-4) monomer is composed of the (b-1) monomer and the (b)
-2) It may have a fluorine atom which is not included in the monomer.

The component (b) is a polymer obtained by polymerizing the above-mentioned monomer (b-1) and / or (b-2), or a monomer obtained by polymerizing the monomer. If necessary,
(B-4) a silane compound having a functional group capable of reacting with the above-mentioned hydrolyzable group or hydroxyl group at a carbon-carbon double bond of a polymer obtained by polymerization further including a monomer (hereinafter referred to as “(b -5) also referred to as “silane compound”).

(B-1) monomer; (b-1) monomer is
It is represented by the following general formula (2) ′. (Wherein, R ^{3 to} R ⁵ are C _m Y _{2m + 1} , m is an integer of 0 to 5,
Y is independently selected from F, H and Cl. )

The above (b-1) monomer includes, for example,
One polymerizable unsaturated double bond group and at least one
And a compound having a fluorine atom.
(B-1) Specific examples of the monomer include (a) CF_Two= CF_Two, CHF = CF_Two, CH_Two= CF
_Two, CH_Two= CHF, CCIF = CF_Two, CHCl = C
F_Two, CCl_Two= CF_Two, CCIF = CCLF, CHF
= CCl_Two, CH_Two= CCIF, CCl_Two= CCLF
Which fluoroethylenes; CF_ThreeCF = CF_Two, CF_ThreeCF = CHF, CF_ThreeCH
= CF_Two, CF_ThreeCF = CH_Two, CF_ThreeCF = CHF,
CHF_TwoCF = CHF, CF_ThreeCH = CH_Two, CH_ThreeC
F = CF_Two, CH_ThreeCH = CF_Two, CH_ThreeCF = C
H_Two, CF_TwoClCF = CF_Two, CF_ThreeCCl = C
F_Two, CF_ThreeCF = CFCl, CF_TwoClCCl = CF
_Two, CF_TwoClCF = CFCl, CF_TwoCCl = CCl
F, CF_TwoCCl = CCl_Two, CCl_ThreeCF = CF_Two,
CF_TwoClCCl = CCl_Two, CFCl_TwoCCl = CC
l_Two, CF_ThreeCF = CHCl, CCIF_TwoCF = CHC
1, CF_ThreeCCl = CHCl, CHF_TwoCCl = CCl
_Two, CF_TwoClCH = CCl_Two, CF_TwoClCCl = C
HCl, CCl_ThreeFluoropropane such as CF = CHCl
(B) CF_ThreeCF_TwoCF = CF_Two, CF_ThreeCF = CFC
F_Three, CF_ThreeCH = CFCF_Three, CF_Two= CFCF_TwoC
HF_Two, CF_ThreeCF_TwoCF = CH_Two, CF_TwoCH = CH
CF_Three, CF_Two= CFCF_TwoCH_Three, CF_Two= CFCH
_TwoCH_Three, CF _ThreeCH_TwoCH = CH_Two, CF_ThreeCH = C
HCH_Three, CF_Two= CHCH_TwoCH_Three, CH_ThreeCF_TwoC
H = CH_Two, CFH_TwoCH = CHCFH_Two, CH_ThreeCF
_TwoCH = CH_Two, CH_Two= CFCH_TwoCH_Three, CF
_Three(CF_Two)_TwoCF = CF_Two, CF_Three(CF_Two)_TwoCF
= CF_TwoC4 or more fluoroolefins such as;
And the like.

(B-1) containing these fluorine atoms
The monomers may be used alone or in combination of two or more.

(B-2) a monomer; (b-2) a monomer
It is represented by the following general formula (3) ′. [Wherein, Rf represents an alkyl group or an alkoxyalkyl group containing a fluorine atom, and R ^{3 to} R ⁵ have the same meaning as in the general formula (2) ′, and within the same meaning, the general formula (2)
R ^{3 to} R ⁵ may be different. ]

As the monomer (b-2), for example,
Compounds having one polymerizable unsaturated double bond group, an ether bond and at least one fluorine atom can be mentioned. (B-2) Specific examples of the monomer include (a) CH ₂ ＣＨCH—O—Rf (Rf represents an alkyl group or an alkoxyalkyl group containing a fluorine atom) (fluoroalkyl) Vinyl ether or (fluoroalkoxyalkyl) vinyl ethers; (ii) perfluoro (methyl vinyl ether), perfluoro (ethyl vinyl ether), perfluoro (propyl vinyl ether), perfluoro (butyl vinyl ether), perfluoro (isobutyl vinyl ether)
(C) Perfluoro (alkoxyalkyl vinyl ether) such as perfluoro (propoxypropyl vinyl ether); and the like. These (b-2) monomers containing a fluorine atom may be used alone or in combination of two or more.

When the monomers (b-1) and (b-2) are used in combination, hexafluoropropylene and perfluoroalkyl perfluorovinyl ether or perfluoroalkoxyalkyl perfluorovinyl ether are used in combination. It is particularly preferred to use them.

(B-3) monomer; (b-3) monomer is
Monomer containing a polymerizable unsaturated double bond and a silicon atom bonded to a hydrolyzable group and / or a hydroxyl group in one molecule. As the monomer (b-3), for example, the following general formula (4) ′ [Wherein X, R ^6, i has the same meaning as X, R ^6, i respectively in the general formula (4), R ⁷ is represented by an organic group having a polymerizable double bond) (Hereinafter also referred to as "unsaturated silane compound").

Specific examples of the unsaturated silane compound include CH _{2 、} CHSi (CH ₃ ) (OCH ₃ ) ₂ , CH ₂ ＣＨCHSi (OCH ₃ ) ₃ , CH ₂ ＣＨCHSi (OC ₂ H ₅ ) ₃ , CH ₂ ＣＨCHSi (CH ₃ ) Cl ₂ , CH ₂ 3CHSiCl ₃ , CH ₂ ＣＨCHCOO (CH ₂ ) ₂ Si (CH ₃ ) (OCH ₃ ) ₂ , CH ₂ ＣＨCHCOO (CH ₂ ) ₂ Si (OCH ₃ ) ₃ , CH ₂ ＣＨCHCOO (CH ₂ ) ₃ Si (CH ₃ ) (OCH ₃ ) ₂ , CH ₂ ＣＨCHCOO (CH ₂ ) ₃ Si (OCH ₃ ) ₃ , CH ₂ ＣＨCHCOO (CH ₂ ) ₂ Si ( CH ₃ ) Cl ₂ , CH ₂ ＣＨCHCOO (CH ₂ ) ₂ SiCl ₃ , CH ₂ ＣＨCHCOO (CH ₂ ) ₃ Si (CH ₃ ) Cl ₂ , CH ₂ ＣＨCHCOO (CH ₂ ) ₃ SiCl ₃ , CH ₂ = _{C (CH 3) COO (CH} 2) 2 Si (CH 3) (OC _{3) 2, CH 2 = C} (CH 3) COO (CH 2) 2 Si (OCH 3) 3, CH 2 = C (CH 3) COO (CH 2) 3 Si (CH 3) (OCH 3) 2, CH ₂ ＣC (CH ₃ ) COO (CH ₂ ) ₃ Si (OCH ₃ ) ₃ , CH ₂ ＣC (CH ₃ ) COO (CH ₂ ) ₂ Si (CH ₃ ) Cl ₂ , CH ₂ ＣC (CH ₃ ) COO (CH ₂ ) ₂ SiCl ₃ , CH ₂ ＣC (CH ₃ ) COO (CH ₂ ) ₃ Si (CH ₃ ) Cl ₂ , CH ₂ ＣC (CH ₃ ) COO (CH ₂ ) ₃ SiCl ₃ ,

[0032]

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And the like. These are 1
Species can be used alone or in combination of two or more.

(B-4) monomers; (b-1) to (b)
-3) Another monomer copolymerizable with the monomer (b-
4) As the monomer, for example, (a) methyl (meth) acrylate, ethyl (meth)
Acrylate, propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, amyl (meth) acrylate, i-amyl (meth) acrylate, hexyl (meth) acrylate, 2
Alkyl (meth) acrylates having 4 to 12 carbon atoms, such as -ethylhexyl (meth) acrylate, n-octyl (meth) acrylate, and cyclohexyl methacrylate; (ii) styrene, α-methylstyrene, 4-methylstyrene, -Methylstyrene, 3-methylstyrene, 4-
Methoxystyrene, 2-hydroxymethylstyrene, 4
-Ethylstyrene, 4-ethoxystyrene, 3,4-dimethylstyrene, 3,4-diethylstyrene, 2-chlorostyrene, 3-chlorostyrene, 4-chloro-3-methylstyrene, 4-t-butylstyrene, Aromatic vinyl monomers such as 1,4-dichlorostyrene, 2,6-dichlorostyrene and 1-vinylnaphthalene;

(C) hydroxymethyl (meth) acrylate, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, hydroxyamyl (meth) acrylate, hydroxyhexyl (meth) acrylate, etc. Hydroxyalkyl (meth) acrylate; epoxy compounds such as allyl glycidyl ether, glycidyl (meth) acrylate, and methyl glycidyl (meth) acrylate;

(D) divinylbenzene, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, Dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, tetrapropylene glycol di (meth) acrylate, butanediol di (meth) acrylate, hexanediol di (meth) acrylate, trimethylolpropane tri (meth) Polyfunctional monomers such as acrylates and pentaerythritol tetra (meth) acrylate;

(E) (meth) acrylamide, N-methylol (meth) acrylamide, N-methoxymethyl (meth) acrylamide, N-butoxymethyl (meth)
Acrylamide, N, N'-methylenebisacrylamide, diacetone acrylamide, maleic amide,
Acid amide compounds such as maleimide; (f) vinyl compounds such as vinyl chloride, vinylidene chloride and fatty acid vinyl ester; (g) 1,3-butadiene, 2-methyl-1,3-butadiene, 2,3-dimethyl-1 , 3-butadiene, 2-
Neopentyl-1,3-butadiene, 2-chloro-1,
3-butadiene, 2-cyano-1,3-butadiene, isoprene, substituted straight-chain conjugated pentadienes substituted with a substituent such as an alkyl group, a halogen atom, a cyano group, straight-chain and side-chain conjugated hexadienes, etc. (H) (meth) acrylic acid, fumaric acid, itaconic acid, monoalkylitaconic acid, maleic acid, crotonic acid, 2-
Ethylenically unsaturated carboxylic acids such as (meth) acryloyloxyethyl hexahydrophthalic acid;

(Ii) vinyl cyanide compounds such as acrylonitrile and methacrylonitrile; (nu) 4- (meth) acryloyloxy-2,2,6
6-tetramethylpiperidine, 4- (meth) acryloylamino-2,2,6,6-tetramethylpiperidine,
4- (meth) acryloyloxy-1,2,2,6,6
-Piperidine monomers such as pentamethylpiperidine;

(V) Vinyl glycidyl ether, 2-hydroxyethyl vinyl ether, 3-hydroxypropyl vinyl ether, 2-hydroxypropyl vinyl ether, 4-hydroxybutyl vinyl ether, 3-hydroxybutyl vinyl ether, 5-hydroxypentyl vinyl ether, 6-hydroxyhexyl Vinyl ethers such as vinyl ether;

(II) Allyl ethers such as allyl glycidyl ether, 2-hydroxyethyl allyl ether, 4-hydroxybutyl allyl ether and glycerol monoallyl ether; (V) methyl vinyl ether, ethyl vinyl ether;
n-propyl vinyl ether, isopropyl vinyl ether, n-butyl vinyl ether, isobutyl vinyl ether, tert-butyl vinyl ether, n-pentyl vinyl ether, n-hexyl vinyl ether, n-
Alkyl vinyl ethers or cycloalkyl vinyl ethers such as octyl vinyl ether, n-dodecyl vinyl ether, 2-ethylhexyl vinyl ether and cyclohexyl vinyl ether;

(F) 2,2,2-trifluoroethyl (meth) acrylate, 2,2,3,3,3-pentafluoropropyl (meth) acrylate, 2- (perfluorobutyl) ethyl (meth) acrylate , 2- (perfluorohexyl) ethyl (meth) acrylate, 2-
(Perfluorooctyl) ethyl (meth) acrylate, 2- (perfluorodecyl) ethyl (meth) acrylate, 1H, 1H, 5H-octafluoropentyl (meth) acrylate, 1H, 1H, 2H, 2H-heptadecafluorodecyl In addition to fluorine-containing (meth) acrylates such as (meth) acrylate; and dicaprolactone. These can be used alone or in combination of two or more.

(B-5) Silane compounds; (b-5) silane compounds used in the addition reaction include halogenated silanes such as methyldichlorosilane, trichlorosilane, phenyldichlorosilane; methyldiethoxysilane, methyl Alkoxysilanes such as dimethoxysilane, phenyldimethoxysilane, trimethoxysilane, and triethoxysilane; acyloxysilanes such as methyldiacetoxysilane, phenyldiacetoxysilane, and triacetoxysilane; methyldiaminoxysilane, triaminoxysilane; Examples thereof include aminoxysilanes such as dimethylaminoxysilane. These can be used alone or in combination of two or more.

As the polymerization method for producing the component (b), for example, a method in which a monomer is added in a lump and polymerization is performed, and a part of the monomer is polymerized, and then the remaining part is continuously polymerized. Or a method in which the monomer is continuously added from the beginning of the polymerization.
Further, a polymerization method in which these polymerization methods are combined may be employed. Preferred polymerization methods include solution polymerization. As the solvent used for the solution polymerization, a usual solvent can be used, and among them, ketones and alcohols are preferable. In this polymerization, known polymerization initiators, molecular weight regulators, chelating agents and inorganic electrolytes can be used.

The total content of the constituent units (b-1) and (b-2) constituting the component (b) is usually 0.5 to 80 mol%, preferably 0.5 to 80 mol%, in the component (b). Is 1 to 70
Mol%. If the amount is less than 0.5 mol%, it may be difficult to obtain a well-balanced coating film having water repellency and oil repellency, as well as excellent transparency and adhesion. On the other hand, 80 mol%
If it exceeds, the resulting coating film may have poor adhesion to the substrate. Among them, the content of the structural unit (b-1) is preferably 0.5 to 70 mol% in the component (b). Further, the content of the (b-2) structural unit is as follows:
In the component (b), the content is preferably 0.5 to 70 mol%. Further, the content of the structural unit (b-3) is such that the content of the specific silyl group is usually 0.1 to 60 in the component (b).
Mol%, preferably 0.5 to 50 mol%. If it is less than 0.1 mol%, the effect of co-condensation with the component (a) cannot be obtained. On the other hand, if it exceeds 60 mol%, the storage stability of the obtained coating composition tends to be poor. In addition, the structural unit [(b-4) structural unit] composed of the (b-4) monomer which is another copolymerizable monomer,
In the component (b), usually 90 mol% or less, preferably
It is about 80 mol% or less.

The component (b) preferably has a number average molecular weight in terms of polystyrene (hereinafter also referred to as “Mn”) of preferably 1,000
0 to 50,000, more preferably 5,000 to 3
It is 0000.

In the present invention, the component (b) can be used alone or in combination of two or more obtained as described above.

The amount of the component (b) used in the present invention is as follows:
The component (a) is converted to (R ¹ ) _n SiO _{(4-n) / 2} to obtain 10
When it is 0 parts by weight, it is usually 20 to 500 parts by weight, preferably 25 to 400 parts by weight, and more preferably 50 to 50 parts by weight.
３００300 parts by weight. In this case, if the amount of the component (b) is less than 20 parts by weight, the resulting coating film has alkali resistance,
Crack resistance tends to decrease. On the other hand, if it exceeds 500 parts by weight, the weather resistance of the coating film tends to decrease.

In the present invention, a vinyl copolymer containing no fluorine atom and containing a specific silyl group is used in combination with the component (b) (hereinafter, also referred to as "component (b)").
May be used in a range that does not impair the effects of the present invention. The component (b ″) is composed of the monomer (b-3) and the component (b-4)
It can be obtained by copolymerizing a monomer, or by subjecting (b-4) a silane compound to an addition reaction to a polymer obtained by polymerizing a monomer (b-4). The content of the component (b ″) is usually based on 100 parts by weight of the component (a).
500 parts by weight or less.

As described above, the coating composition of the present invention has an antifouling function due to water repellency and oil repellency, and can provide a vehicle window excellent in durability and abrasion resistance.
It is preferable to provide an undercoat layer on the surface of the vehicle window substrate for the purpose of providing long-term adhesion to the substrate, shielding ultraviolet rays, shielding heat rays, changing the refractive index, and the like. As the undercoat composition for forming the undercoat layer, the above-mentioned composition (i) or composition (ii) can be preferably mentioned.

Hereinafter, the composition (i) and the composition (ii) for the undercoat will be described. Composition (i) The composition (i) for undercoating is, as described above, the above (a)
It contains a component and (b ') water and / or an organic solvent. Component (b ′); Component (b ′) is composed of water and / or an organic solvent. The composition (i) contains the component (a) as an essential component, and optionally contains components (c) to (e) described below. Usually, when the composition is prepared, water is used. It is added to cause the organosilane (1) to undergo a hydrolysis / condensation reaction or to disperse a particulate component described later. The amount of water used in the present invention is usually based on 1 mol of the organosilane (1) in the component (a).
It is about 0.5 to 3 mol, preferably about 0.7 to 2 mol.

The organic solvent mainly comprises (a)
Components, the components (c) to (e) described below, and the like are uniformly mixed,
It is used to adjust the total solid content of the composition, to make it applicable to various coating methods, and to further improve the dispersion stability and storage stability of the composition.

The organic solvent is not particularly limited as long as it can uniformly mix the above components.
For example, alcohols, aromatic hydrocarbons, ethers, ketones, esters and the like can be mentioned.
Among these organic solvents, specific examples of alcohols include methanol, ethanol, n-propyl alcohol, i-propyl alcohol, n-butyl alcohol,
sec-butyl alcohol, t-butyl alcohol, n
-Hexyl alcohol, n-octyl alcohol, ethylene glycol, diethylene glycol, triethylene glycol, ethylene glycol monobutyl ether,
Examples thereof include ethylene glycol monoethyl ether acetate, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene monomethyl ether acetate, and diacetone alcohol.

Specific examples of aromatic hydrocarbons include benzene, toluene and xylene, specific examples of ethers include tetrahydrofuran and dioxane, and specific examples of ketones include acetone, methyl ethyl ketone, and the like. Specific examples of esters such as methyl isobutyl ketone and diisobutyl ketone include ethyl acetate, propyl acetate, butyl acetate, and propylene carbonate. These organic solvents can be used alone or in combination of two or more.

In the composition (i), it is preferable that the organosilane (1) is hydrolyzed and condensed by adding an appropriate amount of water [(b ') component] to the organosilane (1). As described above, a hydrolyzate and / or condensate of the organosilane (1) can be used as the component (a). The type and amount of the component (a) in the composition (i) are the same as those in the composition (i), and thus description thereof is omitted.

Composition (ii) The undercoating composition (ii) is prepared as described in (a) above.
And (b ″) a polymer containing silyl group.

(B ″) a polymer containing a silyl group; the component (b ″) is a polymer containing no fluorine atom and having a specific silyl group preferably at the terminal and / or side chain of the polymer molecular chain. . In the composition (ii), the component (b ″) is excellent because the hydrolyzable group and / or the hydroxyl group in the silyl group is co-condensed with the component (a) when the coating film is cured. It is a component that provides coating film performance.
The content of silicon atoms in the component (b ″) is (b ″)
It is usually 0.001 to 20% by weight, preferably 0.01 to 15% by weight, based on the components. Preferred specific silyl groups are groups represented by the above general formula (4).

(B ″) The silyl group-containing polymer is used in the above (b) production of the silyl group-containing fluoropolymer,
Without using (b-1) monomer and (b-2) monomer,
(B-4) It is obtained in the same manner as in the method for producing the component (b), except that at least one of the above-mentioned monomers is used as the monomer.

Other examples of the component (b ″) include a specific silyl group-containing epoxy resin, a specific silyl group-containing polyester resin, and the like. Type epoxy resin, bisphenol F type epoxy resin, hydrogenated bisphenol A type epoxy resin, aliphatic polyglycidyl ether, an epoxy group in an epoxy resin such as an aliphatic polyglycidyl ester, aminosilanes having a specific silyl group, vinylsilanes, It can be produced by reacting carboxysilanes, glycidylsilanes, etc. The specific silyl group-containing polyester resin is, for example, a specific silyl group added to a carboxyl group or a hydroxyl group contained in the polyester resin. Aminosilanes, carbo Shishiran acids can be prepared by reacting the glycidyl silanes.

The polystyrene-equivalent number average molecular weight (hereinafter referred to as “Mn”) of the component (b ″) is preferably 2,000.
~ 100,000, more preferably 4,000 ~ 5
It is 0000. The amount of the component (b ″) used in the composition (ii) is usually from 2 to 900 when the component (a) is 100 parts by weight in terms of (R ¹ ) _n SiO _{(4-n) / 2.} Parts by weight, preferably 10 to 400 parts by weight, more preferably 20 to 200 parts by weight, in which case (b ″)
If the amount of the component is less than 2 parts by weight, the resulting coating film may have poor alkali resistance, while if it exceeds 900 parts by weight, the long-term weather resistance of the coating film tends to decrease.

In the present invention, the component (b ″) can be used alone or in combination of two or more obtained as described above. In the composition (ii), the above component (b ″) can be used. It is preferred that component (a) is co-condensed with component (a) in the presence of water and / or an organic solvent. In the composition (ii), the type and amount of the component (a) are the same as those of the composition (i), and thus the description is omitted.

The following components (c) to (e) are further added to the coating composition of the present invention and the compositions (i) to (ii) for undercoating used as necessary. be able to. Hereinafter, these components will be described.

Component (c); component (c) is component (a),
A catalyst for accelerating the hydrolysis / condensation reaction of component (b), component (b ″), etc. Use of component (c) increases the curing speed of the resulting coating film and the organosilane used. The molecular weight of the polysiloxane resin produced by the polycondensation reaction of the components is increased, so that a coating film having excellent strength, long-term durability and the like can be obtained, and the coating film can be made thicker and the coating operation can be facilitated.

The component (c) includes an acidic compound, an alkaline compound, a metal salt, an amine compound, an organometallic compound and / or a partial hydrolyzate thereof (hereinafter referred to as an organometallic compound and / or a partial hydrolyzate thereof). Are collectively referred to as “organometallic compounds or the like”). Examples of the acidic compound include acetic acid, hydrochloric acid, sulfuric acid, phosphoric acid, alkyltitanic acid, p-toluenesulfonic acid, and phthalic acid, and acetic acid is preferred. Examples of the alkaline compound include sodium hydroxide and potassium hydroxide, and preferably sodium hydroxide. Examples of the metal salt include alkali metal salts such as naphthenic acid, octylic acid, nitrous acid, sulfurous acid, aluminate, and carbonic acid.

Examples of the amine compound include ethylenediamine, hexamethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, piperidine, piperazine, m-phenylenediamine, p-phenylenediamine, ethanolamine, triethylamine, and triethylamine. -Aminopropyl-trimethoxysilane, 3-aminopropyl-triethoxysilane, 3- (2-aminoethyl) -aminopropyl-trimethoxysilane, 3- (2-aminoethyl) -aminopropyl-triethoxysilane, 3 -(2-aminoethyl) -aminopropylmethyldimethoxysilane, 3
-Anilinopropyl trimethoxysilane, alkylamine salts, quaternary ammonium salts, and various modified amines used as a curing agent for epoxy resins, and the like, preferably 3-aminopropyl trimethoxysilane. , 3-aminopropyl-triethoxysilane and 3- (2-aminoethyl) -aminopropyl-triethoxysilane.

Examples of the organometallic compound and the like include a compound represented by the following general formula (5) (hereinafter also referred to as “organometallic compound (5)”) and a compound having 1 carbon atom bonded to the same tin atom. Examples thereof include an organic metal compound of tetravalent tin having 1 to 2 alkyl groups of 10 to 10 (hereinafter, also referred to as “organotin compound”), or a partial hydrolyzate of these compounds.

M (OR ⁸ ) _p (R ⁹ COCHCOR ¹⁰ ) _q (5) wherein M represents zirconium, titanium or aluminum, and R ⁸ and R ⁹ are the same or different, and each represents an ethyl group 1 to 6 carbon atoms such as n-propyl group, i-propyl group, n-butyl group, sec-butyl group, t-butyl group, n-pentyl group, n-hexyl group, cyclohexyl group and phenyl group. R ¹⁰ represents a divalent hydrocarbon group;
In addition to the same monovalent hydrocarbon groups having 1 to 6 carbon atoms as R ⁸ and R ⁹ , methoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, sec-butoxy, t -Represents an alkoxyl group having 1 to 16 carbon atoms such as a butoxy group, a lauryloxy group and a stearyloxy group, p and q are integers of 0 to 4, and (p + q) = (valence of M). ]

Specific examples of the organometallic compound (5) include (a) tetra-n-butoxyzirconium and tri-n-
Butoxy ethyl acetoacetate zirconium, di-
n-butoxybis (ethylacetoacetate) zirconium, n-butoxytris (ethylacetoacetate) zirconium, tetrakis (n-propylacetoacetate) zirconium, tetrakis (acetylacetoacetate) zirconium, tetrakis (ethylacetoacetate) zirconium, etc. Organic zirconium compounds;

(B) Tetra-i-propoxytitanium, di-i-propoxybis (ethylacetoacetate) titanium, di-i-propoxybis (acetylacetate) titanium, di-i-propoxybis (acetylacetone) Organic titanium compounds such as titanium; (c) tri-i-propoxy aluminum, di-i-propoxy ethyl acetoacetate aluminum, di-
aluminum i-propoxy acetylacetonate,
i-propoxybis (ethylacetoacetate) aluminum, i-propoxybis (acetylacetonate) aluminum, tris (ethylacetoacetate)
Organic aluminum compounds such as aluminum, tris (acetylacetonate) aluminum, and monoacetylacetonate bis (ethylacetoacetate) aluminum; and the like.

Among these organometallic compounds (5) and partial hydrolysates thereof, tri-n-butoxyethylacetoacetate zirconium, di-i-propoxybis (acetylacetonato) titanium, di-i-propoxy・ Ethyl acetoacetate aluminum, tris (ethyl acetoacetate) aluminum, or
Partial hydrolysates of these compounds are preferred.

Further, specific examples of the organotin compound include:
(C ₄ H ₉ ) ₂ Sn (OCOC ₁₁ H ₂₃ ) ₂ , (C
_{4 H 9) 2 Sn (OCOCH} = CHCOOCH 3) 2,
(C ₄ H ₉ ) ₂ Sn (OCOCH = CHCOOC
_{4 H 9) 2, (C} 8 H 17) 2 Sn (OCOC
₈ H ₁₇ ) ₂ , (C ₈ H ₁₇ ) ₂ Sn (OCOC
_{11 H 23) 2, (C} 8 H 17) 2 Sn (OCOCH = CHC
OOCH ₃ ) ₂ , (C ₈ H ₁₇ ) ₂ Sn (OCOCH = C
HCOOC ₄ H ₉ ) ₂ , (C ₈ H ₁₇ ) ₂ Sn (OCOC
H = CHCOOC ₈ H ₁₇ ) ₂ , (C ₈ H ₁₇ ) ₂ Sn (O
COCH = CHCOOC ₁₆ H ₃₃ ) ₂ , (C ₈ H ₁₇ ) ₂ S
n (OCOCH = CHCOOC ₁₇ H ₃₅ ) ₂ , (C
₈ H ₁₇ ) ₂ Sn (OCOCH = CHCOOC
_{18 H 37) 2, (C} 8 H 17) 2 Sn (OCOCH = CHC
OOC ₂₀ H ₄₁ ) ₂ ,

[0071] Carboxylic acid type organotin compounds such as;

(C ₄ H ₉ ) ₂ Sn (SCH ₂ COOC _{8
H 17) 2, (C 4} H 9) 2 Sn (SCH 2 CH 2 COO
C ₈ H ₁₇ ) ₂ , (C ₈ H ₁₇ ) ₂ Sn (SCH ₂ COOC)
₈ H ₁₇ ) ₂ , (C ₈ H ₁₇ ) ₂ Sn (SCH ₂ CH ₂ CO
OC ₈ H ₁₇ ) ₂ , (C ₈ H ₁₇ ) ₂ Sn (SCH ₂ COO)
C ₁₂ H ₂₅ ) ₂ , (C ₈ H ₁₇ ) ₂ Sn (SCH ₂ CH ₂ C)
OOC ₁₂ H ₂₅ ) ₂ , (C ₄ H ₉ ) Sn (SCOCH = C
HCOOC ₈ H ₁₇ ) ₃ , (C ₈ H ₁₇ ) Sn (SCOCH)
ＣＨCHCOOC ₈ H ₁₇ ) ₃ ,

[0073] Mercaptide-type organotin compounds such as;

(C ₄ H ₉ ) ₂ Sn = S, (C ₈ H ₁₇ ) ₂
Sn = S, Sulfide-type organotin compounds such as;

(C ₄ H ₉ ) SnCl ₃ , (C ₄ H ₉ ) ₂
SnCl ₂ , (C ₈ H ₁₇ ) ₂ SnCl ₂ , (C ₄ H ₉ ) ₂ S
organic tin oxides such as nO, (C ₈ H ₁₇ ) ₂ SnO, and these organic tin oxides and ethyl silicate;
Reaction products with ester compounds such as dimethyl maleate, diethyl maleate, and dioctyl phthalate;

The component (c) can be used alone or as a mixture of two or more kinds, and can also be used as a mixture with a zinc compound or another reaction retarder.

The component (c) may be blended when preparing the composition, or may be blended with the composition at the stage of forming a coating film. May be blended in both stages. The amount of the component (c) used is
In the case other than the organometallic compound or the like, the amount is usually 0 to 100 parts by weight of the organosilane (1) in the component (a).
To 100 parts by weight, preferably 0.01 to 80 parts by weight,
More preferably 0.1 to 50 parts by weight, and in the case of an organometallic compound or the like, usually 0 to 100 parts by weight, preferably 100 parts by weight based on 100 parts by weight of the organosilane (1) in the component (a). 0.1 to 80 parts by weight, more preferably 0.5 to 50 parts by weight. In this case, when the amount of the component (c) exceeds 100 parts by weight, the storage stability of the composition tends to decrease, and the coating film tends to crack.

Component (d): Component (d) is represented by the following general formula (6): R ⁹ COCH ₂ COR ¹⁰ (6) wherein R ⁹ and R ¹⁰ are Is the same as R ⁹ and R ^{10 in} each of the above general formulas], respectively. At least one kind. Such a component (d) is particularly preferably used together when an organometallic compound or the like is used as the component (c).

The component (d) functions as an agent for improving the stability of the composition. That is, the component (d) coordinates to a metal atom such as the above-mentioned organometallic compound to promote the co-condensation reaction of the above-mentioned component (a) with the component (b) or the component (b ″) by the organometallic compound or the like. It is presumed that by appropriately controlling the action of the composition, the action of further improving the storage stability of the obtained composition is achieved.

Specific examples of the component (d) include acetylacetone, methyl acetoacetate, ethyl acetoacetate, n-propyl acetoacetate, i-propyl acetoacetate, n-butyl acetoacetate, and sec-butyl acetoacetate. Tert-butyl acetoacetate, hexane-2,4-dione, heptane-2,4-dione, heptane-3,5-dione,
Octane-2,4-dione, nonane-2,4-dione,
5-methylhexane-2,4-dione, malonic acid, oxalic acid, phthalic acid, glycolic acid, salicylic acid, aminoacetic acid, iminoacetic acid, ethylenediaminetetraacetic acid, glycol, catechol, ethylenediamine, 2,2-bipyridine, 1,10 -Phenanthroline, diethylenetriamine, 2-ethanolamine, dimethylglyoxime, dithizone, methionine, salicylaldehyde and the like. Of these, acetylacetone and ethyl acetoacetate are preferred. The component (d) can be used alone or in combination of two or more.

The amount of the component (d) is usually 2 to 1 mol of the organometallic compound in the organometallic compound or the like.
Mol or more, preferably 3 to 20 mol. in this case,
If the amount of the component (d) is less than 2 mol, the effect of improving the storage stability of the obtained composition tends to be insufficient.

Component (e) The component (e) is composed of a powder and / or sol or colloid of an inorganic compound, and is blended according to the desired properties of the coating film.

Specific examples of the compound constituting the component (e)
Is SiO_Two, Al_TwoO_Three, AlGaAs, Al (O
H)_Three, Sb_TwoO_Five, Si_ThreeN_Four, SnO_Two, Sn-I
n_TwoO_Three, In_TwoO_Three, Sb-In_TwoO_Three, InP, I
nSb, InAs, InGaAlP, MgF, Ce
F_Three, CeO_Two, 3Al_TwoO_Three・ 2SiO_Two, BeO,
SiC, AlN, Fe, Fe_TwoO_Three, Co, Co-Fe
O_x, CrO_Two, Fe_FourN, BaTiO_Three, BaO-A
l_TwoO_Three-SiO_Two, Ba ferrite, SmCO_Five, Y
CO_Five, CeCO_Five, PrCO_Five, Sm_TwoCO₁₇, Nd
_TwoFe₁₄B, ZrO_Two, Al_FourO_Three, AlN, SiC,
α-Si, SiN_Four, CoO, Sb-SnO_Two, MnO
_Two, MnB, Co_ThreeO_Four, Co_ThreeB, LiTaO_Three, M
gO, MgAl_TwoO_Four, BeAl_TwoO_Four, ZrSi
O_Four, ZnO, ZnS, ZnSe, ZnSb, ZnT
e, PbTe, PbS, PbSe, GeSi, FeSi
_Two, CrSi_Two, CoSi_Two, MnSi_1.73, Mg_TwoS
i, β-B, BaC, BP, TiB_Two, ZrB_Two, Hf
B_Two, Ru_TwoSi_Three, RuO_Two, TiO_Two, TiO_Three,
SrTiO _Three, FeTiO_Three, PbTiO_Three, Al_TwoT
iO_Five, Zn_TwoSiO_Four, Zr_TwoSiO_Four, 2MgO_Two
-Al_TwoO_Three-5SiO_Two, WO_Three, Bi_TwoO_Three, Cd
O, CdS, CdSe, GaP, GaAs, CdFeO
_Three, MoS_Two, LaRhO_Three, GaN, CdP, Nb_Two
O_Five, GaAsP, Li_TwoO-Al_TwoO_Three-4Si
O _Two, Mg ferrite, Ni ferrite, Ni-Zn ferrite
Ferrite, Li ferrite, Sr ferrite, etc.
Can be These components (e) may be used alone or
A mixture of more than one species can be used.

The component (e) may be in the form of a powder, an aqueous sol or colloid dispersed in water, a polar solvent such as isopropyl alcohol, or a solvent sol or colloid dispersed in a nonpolar solvent such as toluene. There is. In the case of a solvent-based sol or colloid, depending on the dispersibility of the semiconductor, it may be further diluted with water or a solvent, or may be used after being surface-treated to improve the dispersibility.

When the component (e) is an aqueous sol or colloid, or a solvent sol or colloid, the solid concentration is preferably 40% by weight or less.

As a method of blending the component (e) into the composition, the component (e) may be added after the preparation of the composition, or may be added during the preparation of the composition, and the component (e) may be added to the composition (a). It may be co-hydrolyzed / condensed with the component, the component (b) or the component (b ″).

The amount of the component (e) used is generally 0 to 500 parts by weight, preferably 0.1 to 0.1 parts by weight, based on 100 parts by weight of the organosilane (1) in the component (a).
４００400 parts by weight.

Other Additives In the coating composition of the present invention, a filler can be separately added and dispersed for the purpose of coloring and thickening the obtained coating film. Such fillers include, for example, water-insoluble organic pigments and inorganic pigments, other than pigments, such as particulate, fibrous or scaly ceramics, metals or alloys, and oxides and hydroxides of these metals. , Carbides, nitrides, sulfides and the like.

Specific examples of the filler include iron, copper, aluminum, nickel, silver, zinc, ferrite, carbon black, stainless steel, silicon dioxide, titanium oxide for pigments, aluminum oxide, chromium oxide, manganese oxide, and manganese oxide. Iron, zirconium oxide, cobalt oxide, synthetic mullite, aluminum hydroxide, iron hydroxide, silicon carbide,
Silicon nitride, boron nitride, clay, diatomaceous earth, slaked lime, gypsum, talc, barium carbonate, calcium carbonate, magnesium carbonate, barium sulfate, bentonite, mica,
Zinc green, chrome green, cobalt green, viridian, guinea green, cobalt chrome green, shale green, green earth, manganese green, pigment green, ultramarine blue, navy blue, pigment green, rock ultramarine, cobalt blue, cerulean blue, copper borate, Molybdenum blue, copper sulfide, cobalt purple, mars purple, manganese purple, pigment violet, lead oxide, calcium lead oxide, zinc yellow, lead sulfide, chrome yellow, loess, cadmium yellow, strontium yellow, titanium yellow, litharge,
Pigment yellow, cuprous oxide, cadmium red, selenium red, chrome vermillion, red iron, zinc white, antimony white, basic lead sulfate, titanium white, lithopone, lead silicate,
Zircon oxide, tungsten white, lead, zinc white, bunchesone white, lead phthalate, manganese white, lead sulfate, graphite, bone black, diamond black, thermatomic black, vegetable black, potassium titanate whisker, molybdenum disulfide, etc. Can be mentioned. These fillers can be used alone or in combination of two or more. The amount of the filler used is based on 100 parts by weight of the total solid content of the composition.
Usually, it is 300 parts by weight or less.

Further, a known dehydrating agent such as methyl orthoformate, methyl orthoacetate, tetraethoxysilane and the like; polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester may be added to the coating composition, if desired. , Polycarboxylic acid type polymer surfactants, polycarboxylates, polyphosphates, polyacrylates, polyamide ester salts, dispersants such as polyethylene glycol; methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose Thickeners such as celluloses, castor oil derivatives, ferrosilicates; ammonium carbonate, ammonium hydrogen carbonate, ammonium nitrite, sodium borohydride, Inorganic blowing agents such as Rushiumuajido and azo compounds such as azobisisobutyronitrile,
In addition to organic blowing agents such as hydrazine compounds such as diphenylsulfone-3,3'-disulfohydrazine, semicarbazide compounds, triazole compounds and N-nitroso compounds, surfactants, silane coupling agents, titanium coupling agents, dyes, etc. Other additives can also be blended.

Further, a leveling agent can be blended in order to further improve the coating property of the composition. Among such leveling agents, examples of the fluorine-based leveling agent (trade name, the same applies hereinafter) include BM1000 and BM11 manufactured by BM-CHEMIE.
00; Efka 772, Efka 77 of Efka Chemicals
7; Floren series manufactured by Kyoeisha Chemical Co., Ltd .; FC series manufactured by Sumitomo 3M Co., Ltd .; Fluonal TF series manufactured by Toho Chemical Co., Ltd., and the like. BYK series; Shmegma
nn) Sshmego series; Efka Chemicals Efka30, Efka31, Efka34, Efka3
5, Efka 36, Efka 39, Efka 83, Efka 8
6, Efka 88 and the like. Examples of the ether-based or ester-based leveling agent include Carfinol of Nissin Chemical Industry Co., Ltd .; Emulgen and Homogenol of Kao Corporation.

By incorporating such a leveling agent, the finished appearance of the coating film is improved, and the coating film can be uniformly applied. The amount of leveling agent used is
Preferably 0.01 to 5% by weight, based on the total composition,
More preferably, the content is 0.02 to 3% by weight.

The leveling agent may be compounded at the time of preparing the composition, may be added to the composition at the stage of forming the coating film, or may be prepared at the stage of forming the coating film. It may be blended at both stages of film formation.

The resin used in the present invention, preferably the undercoating compositions (i) to (ii), may be blended with another resin. Other resins include acrylic
Examples include urethane resin, epoxy resin, polyester, acrylic resin, fluorine resin, acrylic resin emulsion, epoxy resin emulsion, polyurethane emulsion, and polyester emulsion.

Further, the coating composition of the present invention or the undercoating composition (i) in which the component (b ′) is not specified
In i), water and / or an organic solvent can be separately added. In this case, the amount of water and / or the organic solvent is the same as in the composition (i).

In preparing the coating composition of the present invention, when the components (c) and (d) are not used, the method of mixing the components is not particularly limited, but the components (c) and (d) are not particularly limited. When using a component, preferably
After obtaining a mixture excluding the component (d) from the components (a) to (e), a method of adding the component (d) to the mixture is adopted.

Specific examples of the method for preparing the coating composition of the present invention include the following methods. Organosilane (1), (b) constituting component (a)
A method in which a predetermined amount of water is added to a mixture composed of the component, the component (c), and a required amount of an organic solvent to perform a hydrolysis / condensation reaction, and then the component (d) is added. A predetermined amount of water is added to a mixture of the organosilane (1) constituting the component (a) and a required amount of an organic solvent to carry out a hydrolysis / condensation reaction, and then the components (b) and (c) are mixed. A method of adding, mixing, and further performing a condensation reaction, and then adding the component (d).

A predetermined amount of water is added to a mixture of the organosilane (1) constituting the component (a), the component (c) and a required amount of an organic solvent to carry out a hydrolysis / condensation reaction. A method in which the components are added and mixed, a partial condensation reaction is further performed, and then the component (d) is added. (A) part of the organosilane (1) constituting the component,
A predetermined amount of water is added to a mixture composed of the component (b), the component (c), and a required amount of an organic solvent to perform a hydrolysis / condensation reaction.
After further hydrolysis / partial condensation reaction, (d)
How to add components.

In the present invention, (a) to (d)
Components other than the components can be added at an appropriate stage of preparing the composition.

The coating composition of the present invention has excellent storage stability, adhesion, alkali resistance, organic chemical resistance,
A coating film having improved stain resistance and the like can be formed without deteriorating weather resistance, moisture resistance, (hot) water resistance and the like. Further, the coating composition of the present invention has an antifouling function due to excellent water repellency and oil repellency, and can form a high hardness coating film having excellent durability and abrasion resistance.

The total solid content of the coating composition of the present invention is generally 10 to 45% by weight, preferably 15 to 4% by weight.
It is 0% by weight and is appropriately adjusted depending on the purpose of use. When the total solid content of the composition exceeds 45% by weight, storage stability tends to decrease.

The total solid content of the undercoating compositions (i) to (ii) which may be used in the present invention is usually
50% by weight or less, preferably 40% by weight or less;
It is appropriately adjusted according to the type of the base material, the coating method, and the coating film thickness.

[0103] The structure of the vehicle window of a vehicle window present invention, for example, a coating composition for a vehicle window substrate / the present invention, a vehicle window substrate / the undercoating composition of (i) ~ (ii) Either / Coating composition of the present invention or base material for vehicle window / Primer / Any of the above undercoating compositions (i) to (ii) /
Examples include the coating composition of the present invention. When applying the coating composition of the present invention and the above-described undercoating compositions (i) to (ii) to a substrate, any of the compositions may be a brush, a roll coater, a flow coater,
Use centrifugal coater, ultrasonic coater, dip coat, flow coat, spray, screen process,
Electrodeposition, vapor deposition and the like can be mentioned.

In the case of the coating composition of the present invention, the dry film thickness is about 0.05 to 20 μm in a single application,
In the second coating, a coating film having a thickness of about 0.1 to 40 μm can be formed. Thereafter, the coating film can be formed by drying at normal temperature or by heating and drying at a temperature of about 30 to 200 ° C., usually for about 1 to 60 minutes.

When the undercoat is applied in advance,
Using the above compositions (i) to (ii), a dry film thickness of 1
The second coating can form a coating film having a thickness of about 0.05 to 20 μm and the second coating can have a thickness of about 0.1 to 40 μm. Then, dry at room temperature, or 30 ~ 20
By heating and drying at a temperature of about 0 ° C. for about 1 to 60 minutes, a coating film can be formed on various types of wallpaper base materials. The total film thickness of the undercoat and the top coat is a dry film thickness, usually 0.1 to 80 μm, preferably 0.2 to 80 μm.
It is about 60 μm.

Further, when a primer is used depending on the application, the type of the primer is not particularly limited, as long as it has an effect of improving the adhesion between the substrate and the composition. Select according to the purpose of use. The primers can be used alone or in combination of two or more, and may contain coloring components such as pigments and dyes.

Examples of the type of the primer include alkyd resin, aminoalkyd resin, epoxy resin, polyester, acrylic resin, urethane resin, fluororesin, acrylic silicone resin, acrylic resin emulsion, epoxy resin emulsion, polyurethane emulsion, polyester emulsion and the like. Can be mentioned. In addition, these primers can be provided with various functional groups when adhesion between the substrate and the coating film under severe conditions is required. Examples of such a functional group include a hydroxyl group, a carboxyl group, a carbonyl group, an amide group, an amine group, a glycidyl group, an alkoxysilyl group, an ether bond, and an ester bond. further,
The primer may contain an ultraviolet absorber, an ultraviolet stabilizer, and the like.

Further, on the surface of a coating film formed from the coating composition of the present invention, for the purpose of further increasing the abrasion resistance and gloss of the coating film, for example, US Pat.
Forming a clear layer composed of a siloxane resin-based coating such as a stable dispersion of colloidal silica and a siloxane resin described in US Pat. No. 6,997, US Pat. Can also.

Vehicle Window Substrates Vehicle window substrates to which the coating composition of the present invention can be applied include tempered glass, partially tempered glass, laminated glass and the like. In addition to inorganic glass,
Polycarbonate, polymethyl methacrylate (PMM
A), synthetic resins such as polyethylene terephthalate and ABS resin are also applicable.

These substrates may be subjected to a surface treatment in advance for the purpose of adjusting the base, improving the adhesion, filling the porous substrate, smoothing, and patterning. Examples of the surface treatment for the glass substrate include polishing, degreasing, plating, acid treatment, chromate treatment, flame treatment, coupling treatment, and UV ozone treatment. Examples thereof include blast treatment, alkali treatment, degreasing treatment with a solvent or the like, flame treatment, oxidation treatment, steam treatment, corona discharge treatment, UV ozone treatment, plasma treatment, and ion treatment.

[0111]

EXAMPLES Hereinafter, embodiments of the present invention will be described more specifically with reference to examples. However, the present invention is not limited to these embodiments. Parts and% in Examples and Comparative Examples are based on weight unless otherwise specified. Various measurements and evaluations in Examples and Comparative Examples were performed by the following methods.

(1) Mw and Mn Measured by gel permeation chromatography (GPC) under the following conditions. Sample: Prepared by dissolving 1 g of organosilane condensate or 0.1 g of silyl group-containing vinyl resin in 100 cc of tetrahydrofuran using tetrahydrofuran as a solvent. Standard polystyrene: Standard polystyrene manufactured by Pressure Chemical Co., USA was used. Apparatus: High-temperature, high-speed gel permeation chromatogram (model 150-C ALC / GPC) manufactured by Waters, Inc. Column: SHOdex A-80M manufactured by Showa Denko KK
(Length 50cm) Measurement temperature: 40 ° C Flow rate: 1cc / min

(2) Storage stability The composition to which the curing accelerator was not added was sealed and stored in a polyethylene bottle at room temperature for 3 months, and the presence or absence of gelation was visually determined. For those that did not cause gelation, the viscosity was measured with a BM viscometer manufactured by Tokyo Keiki Co., Ltd., and those with a change rate of 20% or less were evaluated as “good”. (3) Adhesion Cross-cut test according to JIS K5400
), The tape peel test was performed three times, and the average was used. (4) Hardness Based on pencil hardness according to JIS K5400.

(5) Alkali Resistance After the test piece was immersed in a saturated calcium hydroxide aqueous solution for 60 days, the state of the coating film was visually observed. Those that did not change were regarded as “good”. (6) Organic Chemical Resistance 2 cc of isopropyl alcohol was dropped on the coating film, and after 5 minutes, wiped off with a cloth, and the state of the coating film was visually observed. Those that did not change were regarded as “good”. (7) Moisture Resistance After the test piece was kept under an environment of a temperature of 50 ° C. and a humidity of 95% for 1,000 hours, the test piece was taken out and the state of the coating film was visually observed. Those that did not change were regarded as “good”. (8) Weather Resistance According to JIS K5400, an irradiation test was performed for 3,000 hours with a sunshine weather meter, and the appearance (crack, peeling, etc.) of the coating film was visually observed. Those that did not change were regarded as “good”.

(9) Water Resistance After the test piece was immersed in tap water at room temperature for 60 days, the state of the coating film was visually observed. Those that did not change were regarded as “good”. (10) Warm Water Resistance A test piece using an inorganic base material was immersed in warm water at 60 ° C. for 14 days, and the state of the coating film was visually observed. Those that did not change were regarded as “good”. (11) Stain resistance Carbon black / kerosene = 1/2 (weight ratio) on the coating film
Was left at room temperature for 24 hours, washed with water using a sponge, the state of contamination of the coating film was observed, and evaluated according to the following criteria. ；: No contamination △: slightly contaminated X: Contamination is remarkable.

(12) Transparency Each composition was applied on a quartz glass so as to have a dry film thickness of 10 μm, and the transmittance of visible light was measured, and evaluated according to the following criteria. A: The transmittance exceeds 80%. ○: Transmittance of 60 to 80% △: Transmittance of less than 60% (13) Water repellency and oil repellency One drop of ultrapure water or salad oil (edible rapeseed oil manufactured by Nisshin Oil Co., Ltd.) is placed on the coating film and tilted. At that time, the degree of sliding down of the droplet was observed and evaluated according to the following criteria. ；: Easily slips off at an inclination angle of less than 60 degrees. Δ: Sliding down at an inclination angle of 60 to 90 degrees. X: No slip-off even if the inclination angle exceeds 90 degrees. (14) Contact angle Ultra pure water or coal tar (JIS K2439)
The contact angle when 3 μl of the specified industrial coal tar was placed was measured by an automatic contact angle meter manufactured by Kyowa Interface Chemical Co., Ltd. (15) Friction and abrasion resistance A friction and wear test was performed with a Taber abrasion tester at 500 rotations with a wear wheel cs-10 and a load of 0.5 kg. Evaluation was based on criteria. ；: Haze difference is less than 1 △: Haze difference is less than 5 ×: Haze difference is 5 or more

Reference Example 1 <Polymerization of component (b)> After a stainless steel autoclave equipped with an electromagnetic stirrer was sufficiently replaced with nitrogen gas, 150 parts of methyl isobutyl ketone, 30 parts of ethyl vinyl ether, and peroxide in the autoclave were added. 2 parts of lauroyl (radical polymerization initiator) was charged, and the solution in the autoclave was dried with dry ice.
After cooling to −50 ° C. with methanol, oxygen in the system was removed again with nitrogen gas. Next, 20 parts of hexafluoropropylene, 45 parts of perfluoro (methyl vinyl ether) and 5 parts of vinyltrimethoxysilane were added, and the temperature was raised. The temperature inside the autoclave is 60 ° C
The pressure in the autoclave at the time of reaching 5 kg
f / cm ² . The polymerization reaction was continued for 20 hours by stirring while maintaining the temperature of the reaction system at 60 ° C. When the pressure in the autoclave dropped to 1.5 kgf · cm ² , the reaction was stopped by water cooling to stop the solid content. Concentration 4
0% of the component (b) (hereinafter, also referred to as “(B-1)”) was obtained.

Reference Examples 2 to 5 <Polymerization of component (b)> (B) The component was obtained.

[0119]

[Table 1]

Reference Example 6 <Synthesis of Silyl Group-Containing Vinyl Polymer (b ″)> In a reactor equipped with a reflux condenser and a stirrer, 70 parts of methyl methacrylate, 40 parts of n-butyl acrylate, and γ-methacryloxypropyl tri 20 parts of methoxysilane, 5 parts of acrylic acid, 2-hydroxyethyl methacrylate 13
Part, 1,1,1-trimethylamine methacrylimide 2
Parts and 150 parts of i-propyl alcohol 50 parts of methyl ethyl ketone and 25 parts of methanol were added and mixed,
The mixture was heated to 80 ° C. with stirring, a solution of 4 parts of azobisisovaleronitrile dissolved in 10 parts of xylene was added dropwise to the mixture over 30 minutes, and the mixture was reacted at 80 ° C. for 5 hours to obtain a solid concentration of 40%. To obtain a silyl group-containing vinyl polymer solution (b ″ -1).

Synthesis Examples 1 to 9 and Comparative Synthesis Examples 1 and 2 Tables 2 and 3 were placed in a reactor equipped with a reflux condenser and a stirrer.
(Excluding water and post-additional components) were added and mixed. After adding water, the mixture was stirred and reacted at 60 ° C. for 5 hours. Subsequently, the post-addition component was added and the mixture was cooled to room temperature to obtain coating compositions (A) to (K) of the present invention and comparative compositions (a) and (b) each having a solid content of 20%. The storage stability of the obtained composition was evaluated. The evaluation results are shown in Tables 2 and 3.

[0122]

[Table 2]

[0123]

[Table 3]

(* 1): Zinc oxide dispersed in toluene (solid content: 30%) (* 2): Water-dispersed (pH 4) anatase type titanium oxide (solid content: 30%)

Reference Examples 7 to 9 <Synthesis of Undercoating Coating Composition> Into a reactor equipped with a reflux condenser and a stirrer, each component (except for the post-addition component) of the type and number of parts described in Table 4 was added. The mixture was stirred well and reacted at 60 ° C. for 4 hours. Next, the mixture was cooled to room temperature, and post-added components were added to obtain a composition having a solid content of 20%. After 100 parts of i-propyl alcohol was added to 100 parts of the obtained composition and mixed well, 10 parts of an i-propyl alcohol solution (solid content: 15%) of a reactant composed of dibutyltin diacetate and a silicate oligomer was added. After stirring well, the undercoating coating composition (i-
1) to (i-3) were obtained.

[0126]

[Table 4]

(* 3) Colloidal silica dispersed in i-propyl alcohol (solid content 30%) (* 4) Zinc oxide dispersed in toluene (solid content 30%)

Reference Examples 10 to 18 <Synthesis of Undercoating Coating Composition> Tables 5 and 6 were prepared in a reactor equipped with a reflux condenser and a stirrer.
The components (parts other than the post-addition components) of the kind and number of parts described in (1) were added, and the mixture was stirred well and reacted at 60 ° C for 4 hours. Then
Cool to room temperature, add post-additional components and add
% Of the composition was obtained. After 100 parts of i-propyl alcohol was added to 100 parts of the obtained composition and mixed well, an i-propyl alcohol solution of a reactant composed of dibutyltin diacetate and a silicate oligomer (solid content of 15 parts) was obtained.
%) And stirred well to obtain coating compositions (ii-1) to (ii-9) for undercoating.

[0129]

[Table 5]

[0130]

[Table 6]

In Tables 5 and 6, (* 3) i-propyl alcohol-dispersed colloidal silica (solid content: 30%) (* 4) toluene-dispersed zinc oxide (solid content: 30%) (* 5) Takamatsu Oil & Fat Co., Ltd. ) Polyester resin (solid content 20%) (* 6) In-Sn oxide dispersed in i-propyl alcohol (solid content 30%)

Reference Example 19 <Preparation of Undercoating Coating Composition> To 100 parts by weight of the solution (b ″ -1) obtained in Reference Example 6,
80 parts by weight of methyl ethyl ketone and 20 parts by weight of i-propyl alcohol were added and stirred well. 20 parts by weight of zinc oxide (a toluene dispersion having a solid content of 30%) having a solid content of 20% with methyl ethyl ketone was dropped and stirred, and the undercoating coating composition (p- 1) was obtained.

Examples 1 to 24, Comparative Examples 1 to 2 If necessary, the undercoating coating compositions described in Tables 7 to 10 were applied to a glass surface so as to have a dry film thickness of 2 μm, and dried. Next, the coating composition of the present invention was applied so as to have a dry film thickness of 2 μm and dried to obtain a vehicle window sample. Various evaluations were performed on the obtained samples. The results are shown in Tables 7 to 10.

[0134]

[Table 7]

[0135]

[Table 8]

[0136]

[Table 9]

[0137]

[Table 10]

Examples 25 to 31 The coating compositions for undercoating described in Table 11 were applied to the respective substrates described in Table 11 so as to have a dry film thickness of 2 μm, and then dried. The coating composition of the present invention was applied so as to have a dry film thickness of 2 μm, and dried to obtain a vehicle window sample. The obtained sample was evaluated for adhesion and weather resistance. The results are shown in Table 11.

[0139]

[Table 11]

[0140]

The coating composition for a vehicle window of the present invention contains a specific organosilane component and a fluoropolymer having a silyl group, so that it has excellent storage stability, and has excellent adhesion, alkali resistance, A coating film having improved stain resistance and the like can be formed without reducing organic chemical resistance, weather resistance, moisture resistance, (warm) water resistance and the like. Moreover, the coating film has high hardness, excellent durability and abrasion resistance, and has an antifouling function by water repellency and oil repellency. Therefore, it is useful as a maintenance-free vehicle window without impairing the aesthetics in the long term. Further, the locations to which the vehicle window and the vehicle window base material of the present invention are applied include, in addition to front and rear windows of an automobile, a railway vehicle, an aircraft, a ship, a covered scooter, a submarine, a spacecraft, a roller coaster, a ferris wheel. And various windows.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J002 BD12X BD13X BD14X BD15X BD16X BQ00X BQ00Y CD11Y CD19Y CF11Y CP03W CP05W CP06W CP08W CP09W CP10W CP12W DE026 EA046 EC036 EC046 ED026 EE036 EE046 EF046 FD 010 010

Claims (3)

[Claims] (A) The following general formula (1):¹)_nSi (OR^Two)_4-n ... (1) (where R¹Are the same or different when there are two,
A monovalent organic group having 1 to 8 carbon atoms;^TwoAre the same or
Differently, an alkyl group having 1 to 5 carbon atoms or 1 to 6 carbon atoms
Wherein n is an integer of 0 to 2. )
Organosilane, a hydrolyzate of the organosilane,
And at least one selected from the group of condensates of the organosilane.
And (b) (b-1) the following general formula (2)
Constituent unit represented by(Where R^Three~ R^FiveIs C_mY_{2m + 1}, M = an integer from 0 to 5,
Y is independently selected from F, H and Cl
You. ) And / or (b-2) represented by the following general formula (3).
Constituent unitsWherein Rf is an alkyl group containing a fluorine atom or
A oxyalkyl group;^Three~ R^FiveIs the general formula (2)
It is synonymous and, within the same meaning, R of the general formula (2) ^Three~ R
^FiveAnd may be different. ] And hydrolyzable
Having a silicon atom bonded to a group and / or a hydroxyl group
At least one selected from the group of polymers containing a silyl group
Coating composition for vehicle windows characterized by containing
object. 2. A vehicle window having a coating comprising the vehicle window coating composition according to claim 1 on the surface of a vehicle window substrate. 3. A vehicle window base material having a coating film comprising the following composition (i) or (ii) on the surface thereof, and further comprising the vehicle window coating composition according to claim 1 thereon. A vehicle window having a coating film. (I) (a) The following general formula (1) (R ¹ ) _n Si (OR ² ) _4-n (1) (wherein, when two R ¹ are present, they are the same or different,
A monovalent organic group having 1 to 8 carbon atoms, wherein R ² is the same or different, and an alkyl group having 1 to 5 carbon atoms or 1 to 6 carbon atoms;
And n is an integer of 0 to 2. A) a coating composition comprising at least one selected from the group consisting of an organosilane represented by the formula (1), a hydrolyzate of the organosilane and a condensate of the organosilane, and (b ′) water and / or an organic solvent. (Ii) A coating composition comprising the above component (a) and (b ″) a polymer containing a silyl group having a silicon atom bonded to a hydrolyzable group and / or a hydroxyl group.