US4389502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clear air-dry acrylic lacquer coating composition
Assignee: EIDP Inc
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Filing: 1981-12-24
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Granted: 1983-06-21
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Expires: 2001-12-24
Abstract
Abstract An air-dry acrylic lacquer capable of forming a low-color, non-yellowing finish with excellent adhesion to either lacquer or enamel-coated substrates is provided. The lacquer is composed primarily of poly(methyl methacrylate), a methyl methacrylate/ethyl acrylate/t-butylaminoethyl methacrylate terpolymer, cellulose acetate butyrate, and a polyester plasticizer. Ordinarily, the lacquer is nonpigmented and provides a clear, glossy and durable film useful as the clear coat of a color coat/clear coat automotive finish.
Inventors
- 👤 Grant C. Fry
- 👤 Walter C. Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:37
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31971
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
222 words
A clear coating composition consisting essentially of 5-40% by weight of a film-forming binder and 60-95% by weight of volatile organic solvents; wherein the binder consists essentially of: (a) about 0-65% by weight, based on the weight of the binder, of one or more polymers selected from the group consisting of poly(methyl methacrylate) and other copolymers of methyl methacrylate having a relative viscosity of about 1.17 to 1.20 measured at 25° C. on a 0.5% polymer solids solution using dichloroethylene solvent; (b) about 0-25% by weight, based on the weight of the binder, of cellulose acetate butyrate having a viscosity of about 1-20 seconds and a butyryl content of 30-55% by weight; (c) about 10-40% by weight, based on the weight of the binder, of a polyester plasticizer comprising the reaction product of a polyol and an organic dicarboxylic acid or an anhydride of an organic dicarboxylic acid having an acid number of 0.1-10; (d) about 0-10% by weight, based on the weight of the binder, of a phthalate plasticizer; and (e) about 15-80% by weight, based on the weight of the binder, of a terpolymer of about 20-90% by weight of units of methyl methacrylate, 2-40% by weight of units of ethyl acrylate, and 2-60% by weight of units of t-butylaminoethyl methacrylate; wherein (a), (b), (c), (d), and (e) total 100%.
Claim 2
Dependent Claim
222 words
A clear coating composition consisting essentially of 5-40% by weight of a film-forming binder and 60-95% by weight of volatile organic solvents; wherein the binder consists essentially of: (a) about 0-65% by weight, based on the weight of the binder, of one or more polymers selected from the group consisting of poly(methyl methacrylate) and other copolymers of methyl methacrylate having a relative viscosity of about 1.17 to 1.20 measured at 25° C. on a 0.5% polymer solids solution using dichloroethylene solvent; (b) about 0-25% by weight, based on the weight of the binder, of cellulose acetate butyrate having a viscosity of about 1-20 seconds and a butyryl content of 30-55% by weight; (c) about 10-40% by weight, based on the weight of the binder, of a polyester plasticizer comprising the reaction product of a polyol and an organic dicarboxylic acid or an anhydride of an organic dicarboxylic acid having an acid number of 0.1-10; (d) about 0-10% by weight, based on the weight of the binder, of a phthalate plasticizer; and (e) about 15-80% by weight, based on the weight of the binder, of a terpolymer of about 20-90% by weight of units of methyl methacrylate, 2-40% by weight of units of ethyl acrylate, and 2-60% by weight of units of t-butylaminoethyl methacrylate; wherein (a), (b), (c), (d), and (e) total 100%.
Claim 3
Dependent Claim
35 words
A composition according to claim 1 which contains in addition to the aforementioned constituents up to about 6% by weight, based on the weight of the film-forming binder, of one or more ultraviolet light stabilizers.
Claim 4
Dependent Claim
27 words
A composition according to claim 2 which contains about 0.5-3% by weight of an ultraviolet screener and about 0.5-3% by weight of a hindered amine light stabilizer.
Claim 5
Dependent Claim
25 words
A composition according to claim 1 wherein the cellulose acetate butyrate has a butyryl content of 35-40% by weight and a viscosity of 1-3 seconds.
Claim 6
Dependent Claim
25 words
A composition according to claim 1 wherein the polyester plasticizer contains an organic monocarboxylic acid in addition to the polyol and dicarboxylic acid or anhydride.
Claim 7
Dependent Claim
24 words
A composition according to claim 5 wherein the polyester plasticizer consists essentially of the reaction product of neopentyl glycol, adipic acid, and benzoic acid.
Claim 8
Dependent Claim
14 words
A composition according to claim 1 wherein the phthalate plasticizer is butyl benzyl phthalate.
Claim 9
Dependent Claim
194 words
A clear coating composition consisting essentially of 5-40% by weight of a film-forming binder and 60-95% by weight of volatile organic solvents; wherein the binder consists essentially of: (a) about 40-80% by weight, based on the weight of the binder, of poly(methyl methacrylate) having a relative viscosity of about 1.17 to 1.20 measured at 25° C. on a 0.5% polymer solids solution using dichloroethylene solvent; (b) about 5-25% by weight, based on the weight of the binder, of cellulose acetate butyrate having a viscosity of about 1-3 seconds and a butyryl content of 35-40% by weight; (c) about 15-25% by weight, based on the weight of the binder, of a polyester plasticizer consisting essentially of the reaction product of neopentyl glycol, adipic acid, and benzoic acid; (d) about 1-10% by weight, based on the weight of the binder, of butyl benzyl phthalate; and (e) about 2-20% by weight, based on the weight of the binder, of a terpolymer of about 20-90% by weight of units of methyl methacrylate, 2-40% by weight of units of ethyl acrylate, and 2-60% by weight of units of t-butylaminoethyl methacrylate wherein (a), (b), (c), (d), and (e) total 100%.
Claim 10
Dependent Claim
194 words
A clear coating composition consisting essentially of 5-40% by weight of a film-forming binder and 60-95% by weight of volatile organic solvents; wherein the binder consists essentially of: (a) about 40-80% by weight, based on the weight of the binder, of poly(methyl methacrylate) having a relative viscosity of about 1.17 to 1.20 measured at 25° C. on a 0.5% polymer solids solution using dichloroethylene solvent; (b) about 5-25% by weight, based on the weight of the binder, of cellulose acetate butyrate having a viscosity of about 1-3 seconds and a butyryl content of 35-40% by weight; (c) about 15-25% by weight, based on the weight of the binder, of a polyester plasticizer consisting essentially of the reaction product of neopentyl glycol, adipic acid, and benzoic acid; (d) about 1-10% by weight, based on the weight of the binder, of butyl benzyl phthalate; and (e) about 2-20% by weight, based on the weight of the binder, of a terpolymer of about 20-90% by weight of units of methyl methacrylate, 2-40% by weight of units of ethyl acrylate, and 2-60% by weight of units of t-butylaminoethyl methacrylate wherein (a), (b), (c), (d), and (e) total 100%.
Claim 11
Dependent Claim
26 words
A composition according to claim 8 wherein the terpolymer consists essentially of about 60-90% of methyl methacrylate, 10-20% of ethyl acrylate, and 2-20% of t-butylaminoethyl methacrylate.
Claim 12
Dependent Claim
197 words
A clear coating composition consisting essentially of 5-40% by weight of a film-forming binder and 60-95% by weight of volatile organic solvents; wherein the binder consists essentially of: (a) about 0-65% by weight, based on the weight of the binder, of one or more polymers selected from the group consisting of poly(methyl methacrylate) and other copolymers of methyl methacrylate having a relative viscosity of about 1.17 to 1.20 measured at 25° C. on a 0.5% polymer solids solution using dichloroethylene solvent; (b) about 5-25% by weight, based on the weight of the binder, of cellulose acetate butyrate having a viscosity of about 1-3 seconds and a butyryl content of 35-40% by weight; (c) about 10-40% by weight, based on the weight of the binder, of a polyester plasticizer consisting essentially of the reaction product of a polyol and an organic dicarboxylic acid or an anhydride of an organic dicarboxylic acid having a acid number of 0.1-10; (d) about 0-10% by weight, based on the weight of the binder, of a phthalate plasticizer; and (e) about 2-20% by weight, based on the weight of the binder, of poly(t-butylaminoethyl methacrylate); wherein (a), (b), (c), (d), and (e) total 100%.
Claim 13
Dependent Claim
197 words
A clear coating composition consisting essentially of 5-40% by weight of a film-forming binder and 60-95% by weight of volatile organic solvents; wherein the binder consists essentially of: (a) about 0-65% by weight, based on the weight of the binder, of one or more polymers selected from the group consisting of poly(methyl methacrylate) and other copolymers of methyl methacrylate having a relative viscosity of about 1.17 to 1.20 measured at 25° C. on a 0.5% polymer solids solution using dichloroethylene solvent; (b) about 5-25% by weight, based on the weight of the binder, of cellulose acetate butyrate having a viscosity of about 1-3 seconds and a butyryl content of 35-40% by weight; (c) about 10-40% by weight, based on the weight of the binder, of a polyester plasticizer consisting essentially of the reaction product of a polyol and an organic dicarboxylic acid or an anhydride of an organic dicarboxylic acid having a acid number of 0.1-10; (d) about 0-10% by weight, based on the weight of the binder, of a phthalate plasticizer; and (e) about 2-20% by weight, based on the weight of the binder, of poly(t-butylaminoethyl methacrylate); wherein (a), (b), (c), (d), and (e) total 100%.
Claim 14
Dependent Claim
37 words
A composition according to claims 8 or 10 which contains in addition to the aforementioned constituents up to about 10% by weight, based on the weight of the film-forming binder, of one or more ultraviolet light stabilizers.
Claim 15
Dependent Claim
31 words
A composition according to claims 1, 8, or 10 which contains about 0.5-3% by weight of a 2-(o-hydroxyphenyl)benzotriazole ultraviolet screener and about 0.5-3% by weight of a hindered amine light stabilizer.
Claim 16
Dependent Claim
27 words
A substrate coated with a pigmented coating composition and subsequently coated with a clear coating composition according to claim 1 to form a color coat/clear coat finish.
References Cited (Backward Citations)
US3823205A
Cited
US4168249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |