EP0306700A2
Expired / Lapsed
EP
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Coating composition and wheel coated with the same for vehicles
Assignee: Osaka Yuki Kagaku Kogyo KK
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Filing: 1988-08-02
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Granted: —
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Expires: 2008-08-02
Abstract
Abstract A coating composition comprising a colloidal silica, a partial condensate of organoalkoxysilane hydrolyzate, a polymer or a copolymer of unsaturated ethylenic monomers, a surface active agent and glycol derivatives, which is coated on a wheel for vehicles shows excellent properties such as adhesive property, filiform corrosion resistance, stain resistance, weather-resistance and impact resistance. A wheel coated with the coating composition for vehicles also shows excellent properties such as filiform corrosion resistance, stain resistance, weather-resistance and impact resistance.
Inventors
- 👤 Yasuo Daimon
- 👤 Takashi Ban
- 👤 Akio Fujinaka
- 👤 Kimio Ochiai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 08:45
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A coating composition comprising, on the basis of the total weight of the solid components of the composition, (a) 20 to 60 % by weight of a colloidal silica, (b) 20 to 60 % by weight of a partial condensate of organoalkoxysilane hydrolyzate, (c) 5 to 40 % by weight of a polymer or a copolymer of unsaturated ethylenic monomers, (d) 0.1 to 5.0 % by weight of a surface active agent and (e) 150 to 550 % by weight of a solvent containing a derivative of glycol as an indispensable component.
Claim 2
Dependent Claim
92 words
A coating composition comprising, on the basis of the total weight of the solid components of the composition, (a) 20 to 60 % by weight of a colloidal silica, (b) 20 to 60 % by weight of a partial condensate of organoalkoxysilane hydrolyzate, (c) 5 to 40 % by weight of a polymer or a copolymer of unsaturated ethylenic monomers, (d) 0.1 to 5.0 % by weight of a surface active agent and (e) 150 to 550 % by weight of a solvent containing a derivative of glycol as an indispensable component.
Claim 3
Dependent Claim
41 words
The coating composition of Claim 1, wherein the colloidal silica (a) is a mixture of acidic aqueous colloidal silica and non-aqueous colloidal silica, and the colloidal silica (a) contains not less than 20 % by weight of the non-aqueous colloidal silica.
Claim 4
Dependent Claim
107 words
The coating composition of Claim 1, wherein the organoalkoxylsilane hydrolyzate is an organohydroxysilane represented by the general formula: R¹Si(OH)₃, wherein R¹ is a group selected from the group consisting of alkyl group having 1 to 3 carbon atoms, vinyl group, 3,4-epoxycyclohexylethyl group, γ-glycidoxypropyl group, γ-methacryloxypropyl group, γ-mercaptopropyl and γ-chloropropyl group, which is prepared by hydrolyzing the organoalkoxysilane represented by the general formula: R¹Si(OR²)₃ wherein R¹ is the same as mentioned above and R² is an alkyl group having 1 to 3 carbon atoms or aryl group in a dispersion of the acidic aqueous colloidal silica and the non-aqueous colloidal silica, or a partial condensate of said organohydroxysilane.
Claim 5
Dependent Claim
22 words
The coating composition of Claim 3, wherein said organohydroxysilane contains methyltrihydroxysilane in an amount of not less than 80 % by weight.
Claim 6
Dependent Claim
26 words
The coating composition of Claim 1, wherein said unsaturated ethylenic monomer (c) is a monomer selected from the group consisting of acrylic esters and methacrylic esters.
Claim 7
Dependent Claim
18 words
The coating composition of Claim 1, wherein said surface active agent (d) is a nonionic surface active agent.
Claim 8
Dependent Claim
46 words
The coating composition of Claim 1, wherein said solvent (e) is a solvent selected from the group consisting of lower aliphatic alcohols, glycol derivatives and ketone derivatives, and said solvent (e) contains the glycol derivatives in an amount of not less than 10 % by weight.
Claim 9
Dependent Claim
106 words
A wheel coated with the coating composition for the purpose of a wheel for vehicles, wherein the composition comprises, on the basis of the total weight of the solid components of the composition, (a) 20 to 60 % by weight of a colloidal silica, (b) 20 to 60 % by weight of a partial condensate of organoalkoxysilane hydrolyzate, (c) 5 to 40 % by weight of a polymer or a copolymer of unsaturated ethylenic monomers, (d) 0.1 to 5.0 % by weight of a surface active agent and (e) 150 to 550 % by weight of a solvent containing a glycol derivatives as an indispensable component.
Claim 10
Dependent Claim
106 words
A wheel coated with the coating composition for the purpose of a wheel for vehicles, wherein the composition comprises, on the basis of the total weight of the solid components of the composition, (a) 20 to 60 % by weight of a colloidal silica, (b) 20 to 60 % by weight of a partial condensate of organoalkoxysilane hydrolyzate, (c) 5 to 40 % by weight of a polymer or a copolymer of unsaturated ethylenic monomers, (d) 0.1 to 5.0 % by weight of a surface active agent and (e) 150 to 550 % by weight of a solvent containing a glycol derivatives as an indispensable component.
References Cited (Backward Citations)
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