Patent US4146452A successfully refreshed from Google Patents.
US4146452A
Expired / Lapsed
US
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Anhydride modified epoxy acrylate UV curable coating
Assignee: Valspar Corp
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Filing: 1977-09-21
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Granted: 1979-03-27
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Expires: 1997-09-21
Abstract
Abstract A radiation curable coating composition for various substrates contains an adduct of acrylic acid and a diepoxy resin modified with an anhydride, such as maleic anhydride, and a low boiling alcohol and/or ketone vehicle. The coating composition can be pigmented and can also contain additives commonly used in coatings, such as wetting agents and flow control agents. The coating composition does not require the usual hydrocarbon vehicles that give rise to air pollution problems or reactive monomer vehicles that can create health hazards.
Inventors
- 👤 Clyde A. Weber
- 👤 Jack S. Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:37
CPC Classifications
C; C09; C09D; C09D163/00; C09D163/10; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4292; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
65 words
A UV light curable coating composition that consists essentially of, by weight of said composition, 10-90% of a diacrylate of a diglycidyl ether of a bisphenol further reacted with 0.1-1 mole of a dicarboxylic acid anhydride per mole of said diacrylate, 10-60% of a low boiling vehicle comprising an alcohol, a ketone, or mixtures thereof 0.1-6% of photosensitizer, and 0-6% of a tertiary amine cosensitizer.
Claim 2
Dependent Claim
65 words
A UV light curable coating composition that consists essentially of, by weight of said composition, 10-90% of a diacrylate of a diglycidyl ether of a bisphenol further reacted with 0.1-1 mole of a dicarboxylic acid anhydride per mole of said diacrylate, 10-60% of a low boiling vehicle comprising an alcohol, a ketone, or mixtures thereof 0.1-6% of photosensitizer, and 0-6% of a tertiary amine cosensitizer.
Claim 3
Dependent Claim
20 words
The coating composition of claim 1, wherein said bisphenol is bisphenol A and said dicarboxylic acid anhydride is maleic anhydride.
Claim 4
Dependent Claim
11 words
The coating composition of claim 2, wherein said photosensitizer is 4'-t-butyl-2,2,2-trichloroacetophenone.
Claim 5
Dependent Claim
18 words
The coating composition of claim 3, wherein said vehicle is a mixture of methyl ethyl ketone and isopropanol.
Claim 6
Dependent Claim
10 words
A substrate coated with the coating composition of claim 1.
Claim 7
Dependent Claim
11 words
A metal substrate coated with the coating composition of claim 4.
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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |