US3968181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified acrylate resin
Assignee: Shell USA Inc
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Filing: 1975-03-17
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Granted: 1976-07-06
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Expires: 1995-03-17
Abstract
Abstract A modified photocurable acrylate resin with improved adhesion to metals is prepared by reacting a liquid polyepoxide, an ethylenically unsaturated conjugated organic carboxylic acid, and the half ester of an aliphatic monohydric alcohol and a polycarboxylic acid anhydride.
Inventors
- 👤 Christopher W. Uzelmeier
- 👤 Paul D. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:50
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08G59/18; C08G59/40; C08G59/42; C08G59/4292; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
An ultraviolet curable acrylate resin composition with improved adhesion to metal surfaces comprising a mixture of (i) a half ester of an aliphatic monohydric alcohol and a polycarboxylic acid anhydride, (ii) acrylic acid and (iii) a polyepoxide in a ratio of between about 0.3 and about 0.9 chemical equivalents of the half ester per chemical equivalent of the polyepoxide and between about 0.7 and about 0.1 chemical equivalents of the acrylic acid per chemical equivalent of the polyepoxide wherein said polyepoxide is a glycidyl ether of 2,2-bis (4-hydroxyphenyl)propane.
Claim 2
Dependent Claim
88 words
An ultraviolet curable acrylate resin composition with improved adhesion to metal surfaces comprising a mixture of (i) a half ester of an aliphatic monohydric alcohol and a polycarboxylic acid anhydride, (ii) acrylic acid and (iii) a polyepoxide in a ratio of between about 0.3 and about 0.9 chemical equivalents of the half ester per chemical equivalent of the polyepoxide and between about 0.7 and about 0.1 chemical equivalents of the acrylic acid per chemical equivalent of the polyepoxide wherein said polyepoxide is a glycidyl ether of 2,2-bis (4-hydroxyphenyl)propane.
Claim 3
Dependent Claim
73 words
A composition according to claim 1 wherein the composition comprises (i) said half ester of an aliphatic monohydric alcohol and a polycarboxylic acid anhydride, (ii) said acrylic acid and (iii) said polyepoxide in a ratio of between about 0.3 and about 0.5 chemical equivalents of the half ester per chemical equivalent of the polyepoxide and between about 0.7 and about 0.5 chemical equivalents of the acrylic acid per chemical equivalent of the polyepoxide.
Claim 4
Dependent Claim
28 words
A composition according to claim 2 wherein said half ester of an aliphatic monohydric alcohol and a polycarboxylic acid anhydride is the methyl half ester of maleic anhydride.
References Cited (Backward Citations)
US3506736A
Cited
US3882187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |