EP0180536A2
Expired / Lapsed
EP
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Acrylic automotive refinish coating composition
Assignee: BASF Corp
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Filing: 1985-10-31
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Granted: —
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Expires: 2005-10-31
Abstract
Abstract An acrylic based coating composition particularly useful as a clear automotive refinish paint has fast dust-free times and good spraying solids content. The composition comprises a copolymer of an alkyl acrylate or methacrylate, a vinyl monomer, and an isocyanato alkyl methacrylate. This copolymer when combined with a polyol, a suitable curing catalyst and U. V. stabilizing compounds is particularly suitable as a clear coat applied over a previously applied color layer in an automotive refinish operation.
Inventors
- 👤 George G. Beck
- 👤 Wade B. Griffis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 22:06
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/728
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
62 words
An acrylic coating composition particularly adapted to automotive refinish use comprising an acrylic copolymer comprising about 50% to about 80 % by weight of an alkyl acrylate or alkyl methacrylate, up to 20% by weight of an isocyanato alkyl methacrylate, and the balance a vinyl unsaturation containing monomer, combined with a polyol cross-linking agent, a curing catalyst, and ultraviolet light stabilizing compounds.
Claim 2
Dependent Claim
62 words
An acrylic coating composition particularly adapted to automotive refinish use comprising an acrylic copolymer comprising about 50% to about 80 % by weight of an alkyl acrylate or alkyl methacrylate, up to 20% by weight of an isocyanato alkyl methacrylate, and the balance a vinyl unsaturation containing monomer, combined with a polyol cross-linking agent, a curing catalyst, and ultraviolet light stabilizing compounds.
Claim 3
Dependent Claim
52 words
The composition of claim 1 wherein the acrylate or methacrylate is methyl methacrylate present in an amount of about 80% by weight, the isocyanato compound is isocyanato ethyl methacrylate present in an amount of about 10% by weight, and the vinyl monomer is styrene in an amount of about 10% by weight.
Claim 4
Dependent Claim
52 words
The composition of claim 1 wherein the acrylate or methacrylate is methyl methacrylate present in an amount of about 75% by weight, the isocyanato compound is isocyanato ethyl methacrylate present in an amount of about 15% by weight, and the vinyl monomer is styrene in an amount of about 10% by weight.
Claim 5
Dependent Claim
34 words
The composition of claim 1 wherein the alkyl acrylate or alkyl methacrylate comprises a mixture of 20% to 25% butyl methacrylate and 55% to 60% methyl methacrylate based on total weight of the copolymer.
Claim 6
Dependent Claim
32 words
The composition of claim 2 wherein the ultraviolet light stabilizing coumpounds are selected from the group consisting of substituted hydroxyphenyl benzotriazoles and hindred amines, and the curing catalyst is dibutyl tin dilaurate.
Claim 7
Independent Claim
74 words
A method of coating a metal substrate comprising admixing a copolymer comprising about 50% to about 80% by weight of an alkyl acrylate or alkyl methacrylate with up to about 20% by weight of an isocyanato alkyl methacrylate and the balance a vinyl unsaturation containing monomer, with a polyol cross-linking agent, a curing catalyst and ultraviolet light stabilizing compounds, applying a layer of the composition to a metal substrate, and curing the applied composition.
Claim 8
Independent Claim
74 words
A method of coating a metal substrate comprising admixing a copolymer comprising about 50% to about 80% by weight of an alkyl acrylate or alkyl methacrylate with up to about 20% by weight of an isocyanato alkyl methacrylate and the balance a vinyl unsaturation containing monomer, with a polyol cross-linking agent, a curing catalyst and ultraviolet light stabilizing compounds, applying a layer of the composition to a metal substrate, and curing the applied composition.
Claim 9
Dependent Claim
25 words
The method of claim 6 wherein the copolymer is admixed with the cross-linking agent, curing catalyst, and ultraviolet light stabilizing compounds just prior to application.
Claim 10
Dependent Claim
52 words
The method of claim 6 wherein the acrylate or methacrylate is methyl methacrylate present in an amount of about 80% by weight, the isocyanato compound is isocyanato ethyl methacrylate present in an amount of about 10% by weight, and the vinyl monomer is styrene in an amount of about 10% by weight.
Claim 11
Dependent Claim
52 words
The method of claim 6 wherein the acrylate or methacrylate is methyl methacrylate present in an amount of about 75% by weight, the isocyanato compound is isocyanato ethyl methacrylate present in an amount of about 15% by weight, and the vinyl monomer is styrene in an amount of about 10% by weight.
Claim 12
Dependent Claim
32 words
The method of claim 6 wherein the acrylate or methacrylate comprises a mixture of 20% to 25% butyl methacrylate and 55% to 60% methyl methacrylate based on total weight of the copolymer.
Claim 13
Dependent Claim
32 words
The method of claim 6 wherein the ultraviolet light stabilizing compounds are selected from the group consisting of substituted hydroxyphenyl benzotriazoles and hindred amines, and the curing catalyst is dibutyl tin dilaurate.
Claim 14
Dependent Claim
18 words
The method of claim 6 wherein the metal substrate has a layer of polymer previously applied to it.
Claim 15
Dependent Claim
10 words
The method of claim 12 wherein the polymer is pigmented.
Claim 16
Dependent Claim
57 words
A metal substrate coated with an acrylate copolymer comprising about 50% to about 80% by weight of an alkyl acrylate or alkyl methacrylate, up to 20% by weight of an isocyanato alkyl methacrylate, and the balance a vinyl unsaturation containing monomer, combined and reacted with a polyol cross-linking agent, a curing catalyst, and ultraviolet light stabilizing compounds.
Claim 17
Dependent Claim
57 words
A metal substrate coated with an acrylate copolymer comprising about 50% to about 80% by weight of an alkyl acrylate or alkyl methacrylate, up to 20% by weight of an isocyanato alkyl methacrylate, and the balance a vinyl unsaturation containing monomer, combined and reacted with a polyol cross-linking agent, a curing catalyst, and ultraviolet light stabilizing compounds.
Claim 18
Dependent Claim
27 words
The coated metal substrate of claim 14 wherein the copolymer is admixed with the cross-linking agent, curing catalyst, and ultraviolet light stabilizing compounds just prior to application.
Claim 19
Dependent Claim
54 words
The coated metal substrate of claim 14 wherein the acrylate or methacrylate is methyl methacrylate present in an amount of about 80% by weight, the isocyanato compound is isocyanato ethyl methacrylate present in an amount of about 10% by weight, and the vinyl monomer is styrene in an amount of about 10% by weight.
Claim 20
Dependent Claim
54 words
The coated metal substrate of claim 14 wherein the acrylate or methacrylate is methyl methacrylate present in an amount of about 75% by weight, the isocyanato compound is isocyanato ethyl methacrylate present in an amount of about 15% by weight, and the vinyl monomer is styrene in an amount of about 10% by weight.
Claim 21
Dependent Claim
34 words
The coated metal substrate of claim 14 wherein the acrylate or methacrylate comprises a mixture of 20% to 25% butyl methacrylate and 55% to 60% methyl methacrylate based on total weight of the copolymer.
Claim 22
Dependent Claim
34 words
The coated metal substrate of claim 14 wherein the ultraviolet light stabilizing compounds are selected from the group consisting of substituted hydroxyphenyl benzotriazoles and hindred amines, and the curing catalyst is dibutyl tin dilaurate.
Claim 23
Dependent Claim
20 words
The coated metal substrate of claim 14 wherein the metal substrate has a layer of polymer previously applied to it.
References Cited (Backward Citations)
No citation records indexed.
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