US4273695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene-acrylic enamels
Assignee: EIDP Inc
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Filing: 1979-12-20
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Granted: 1981-06-16
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Expires: 1999-12-20
Abstract
Abstract Curable coating composition containing the film-forming ingredient consisting essentially of, with the sums of the parts by weight and the mole percentages being 100 and 100%, respectively: (1) about 55-95 parts by weight of a copolymer of (a) 20-70 mole % ethylene, (b) 20-60 mole % methyl methacrylate, (c) 1-15 mole % of a hydroxyalkyl ester of acrylic acid or methacrylic acid in which the hydroxyalkyl group contains 2-4 carbon atoms, and (d) 0-9 mole % of an α,β-unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, itaconic acid, crotonic acid, 2-ethylacrylic acid, and 2-propylacrylic acid, or of maleic anhydride, and (2) about 5-45 parts by weight of a nitrogen-resin crosslinking agent.
Inventors
- 👤 Robin N. Greene
- 👤 Walter R. Hertler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:31
CPC Classifications
C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/08; C09D123/0846; C09D123/0869; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12; C08; C08L; C08L61/00; C08L61/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
112 words
Curable coating composition containing the film-forming ingredient consisting essentially of, with the sums of the parts by weight and the mole percentages being 100 and 100%, respectively: (1) about 55-95 parts by weight of a copolymer of (a) 20-70 mole % ethylene, (b) 20-60 mole % methyl methacrylate, (c) 1-15 mole % of a hydroxyalkyl ester of acrylic acid or methacrylic acid in which the hydroxyalkyl group contains 2-4 carbon atoms, and (d) 0-9 mole % of an α,β-unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, itaconic acid, crotonic acid, 2-ethylacrylic acid, and 2-propylacrylic acid, or of maleic anhydride, and (2) about 5-45 parts by weight of a nitrogen-resin crosslinking agent.
Claim 2
Dependent Claim
112 words
Curable coating composition containing the film-forming ingredient consisting essentially of, with the sums of the parts by weight and the mole percentages being 100 and 100%, respectively: (1) about 55-95 parts by weight of a copolymer of (a) 20-70 mole % ethylene, (b) 20-60 mole % methyl methacrylate, (c) 1-15 mole % of a hydroxyalkyl ester of acrylic acid or methacrylic acid in which the hydroxyalkyl group contains 2-4 carbon atoms, and (d) 0-9 mole % of an α,β-unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, itaconic acid, crotonic acid, 2-ethylacrylic acid, and 2-propylacrylic acid, or of maleic anhydride, and (2) about 5-45 parts by weight of a nitrogen-resin crosslinking agent.
Claim 3
Dependent Claim
12 words
Composition of claim 1 wherein the hydroxyalkyl ester is a hydroxyalkyl methacrylate.
Claim 4
Dependent Claim
11 words
Composition of claim 2 wherein the hydroxyalkyl methacrylate is 2-hydroxyethyl methacrylate.
Claim 5
Dependent Claim
19 words
Composition of claim 1 wherein component (d) is an α,β-unsaturated carboxylic acid selected from acrylic acid and methacrylic acid.
Claim 6
Dependent Claim
10 words
Composition of claim 4 wherein the acid is methacrylic acid.
Claim 7
Dependent Claim
13 words
Composition of claim 1 wherein the crosslinking agent is an alkylated melamine-formaldehyde resin.
Claim 8
Dependent Claim
9 words
Emulsion or dispersion of the composition of claim 1.
Claim 9
Dependent Claim
15 words
Emulsion or dispersion of claim 7 having a pH of about 6 to about 9.
Claim 10
Dependent Claim
19 words
Emulsion or dispersion of claim 7 wherein some or all pendent carboxyl groups of the copolymer have been neutralized.
Claim 11
Dependent Claim
17 words
Emulsion or dispersion of claim 9 wherein the neutralization has been effected with an alkylamine or hydroxyalkylamine.
Claim 12
Dependent Claim
9 words
Emulsion or dispersion of claim 10 containing a pigment.
Claim 13
Dependent Claim
13 words
Solution of the composition of claim 1 in one or more organic solvents.
Claim 14
Dependent Claim
16 words
Solution of the composition of claim 1 in a mixture of toluene and methyl ethyl ketone.
Claim 15
Dependent Claim
17 words
Solution of the composition of claim 1 in a mixture of methyl ethyl ketone and butyl Cellosolve®.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |