US4440894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting vinyl acetate tetrapolymer coatings
Assignee: DeSoto Inc
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Filing: 1982-10-08
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Granted: 1984-04-03
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Expires: 2002-10-08
Abstract
Abstract Thermosetting solvent solution coating compositions are disclosed which form hard and impact resistant baked coatings of good gloss retention on exterior exposure. These compositions comprise a butanol-containing solvent having dissolved therein a solution copolymer obtained by copolymerizing from 55% to 75% of vinyl acetate with from 15% to 40% of C 2 -C 8 hydroxyalkyl acrylate or methacrylate, from 3% to 10% of C 2 -C 4 hydroxyalkyl acrylate or methacrylate, and from about 0.5% to about 5% of copolymerizable monoethylenically unsaturated carboxylic acid in organic solvent medium consisting essentially of a butanol at a solids content of at least 65%. This copolymer is used in admixture with a polyalkoxy-methyl melamine in an amount of from 8% to 20%, based on the mixture.
Inventors
- 👤 Edwin A. Zychowski
- 👤 Kenneth E. Jasenof
- 👤 Artemio L. Jimenez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:16
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/04; C09; C09D; C09D131/00; C09D131/02; C09D131/04; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08L61/20; C08L61/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
A thermosetting solvent solution coating composition characterized by forming hard and impact resistant baked coatings of good gloss retention on exterior exposure comprising, an organic solvent medium comprising a butanol having dissolved therein a solution copolymer obtained by copolymerizing from 55% to 75% of vinyl acetate with from 15% to 40% of C 2 -C 8 alkyl acrylate or methacrylate, from 3% to 10% of C 2 -C 4 hydroxyalkyl acrylate or methacrylate, and from about 0.5% to about 5% of copolymerizable monoethylenically unsaturated carboxylic acid in organic solvent solution medium consisting essentially of a butanol at a solids content of at least 65%, said copolymer being in admixture with from 8% to 20%, based on the mixture, of a polyalkoxymethyl melamine with a volatile alcohol.
Claim 2
Dependent Claim
126 words
A thermosetting solvent solution coating composition characterized by forming hard and impact resistant baked coatings of good gloss retention on exterior exposure comprising, an organic solvent medium comprising a butanol having dissolved therein a solution copolymer obtained by copolymerizing from 55% to 75% of vinyl acetate with from 15% to 40% of C 2 -C 8 alkyl acrylate or methacrylate, from 3% to 10% of C 2 -C 4 hydroxyalkyl acrylate or methacrylate, and from about 0.5% to about 5% of copolymerizable monoethylenically unsaturated carboxylic acid in organic solvent solution medium consisting essentially of a butanol at a solids content of at least 65%, said copolymer being in admixture with from 8% to 20%, based on the mixture, of a polyalkoxymethyl melamine with a volatile alcohol.
Claim 3
Dependent Claim
23 words
A coating composition as recited in claim 1 in which said vinyl acetate is present in an amount of from 65% to 72%.
Claim 4
Dependent Claim
19 words
A coating composition as recited in claim 2 in which said alkyl acrylate or methacrylate is a butyl acrylate.
Claim 5
Dependent Claim
24 words
A coating composition as recited in claim 1 in which said copolymer is formed by copolymerization at a solids content of 70% to 75%.
Claim 6
Dependent Claim
28 words
A coating composition as recited in claim 1 in which the melamine used is a polymethoxymethyl melamine present in an amount of 10% to 15% of the mixture.
Claim 7
Dependent Claim
28 words
A coating composition as recited in claim 3 in which the hydroxy acrylate or methacrylate is 2-hydroxyethyl acrylate or methacrylate used in an amount of 6% to 9%.
Claim 8
Dependent Claim
20 words
A coating composition as recited in claim 1 in which said composition is reduced to coating viscosity with aromatic hydrocarbons.
Claim 9
Dependent Claim
25 words
A coating composition as recited in claim 1 in which said composition is pigmented in a pigment to binder weight ratio of 0.4:1 to 1.5:1.
Claim 10
Dependent Claim
42 words
A coating composition as recited in claim 1 in which said carboxylic acid is acrylic acid or methacrylic acid used in an amount of 1% to 3% and said alkyl acrylate or methacrylate is used in an amount of 20% to 25%.
References Cited (Backward Citations)
US3208963A
Cited
US3311583A
Cited
US3763117A
Cited
US3926888A
Cited
US4126595A
Cited
US4338379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |