Patent US4194955A successfully refreshed from Google Patents.
US4194955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet curable self-pigmented coating composition
Assignee: Celanese Corp
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Filing: 1978-11-13
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Granted: 1980-03-25
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Expires: 1998-11-13
Abstract
Abstract This invention provides a substantially transparent curable coating composition which upon curing with ultraviolet radiation converts into a glossy opaque film. The invention ultraviolet radiation curable coating composition comprises a homogeneous blend of (1) polyvinyl butyral, (2) vinyl acetate, (3) trimethylolpropane triacrylate and/or pentaerythritol triacrylate, and (4) a photoinitiator.
Inventors
- 👤 Michael T. Nowak
- 👤 Charles B. Rybny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:55
CPC Classifications
C; C08; C08F; C08F261/00; C08F261/08; C09; C09D; C09D129/00; C09D129/14; Y; Y10; Y10S; Y10S525/00; Y10S525/931; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/31645; Y10T428/31649; Y10T428/31678; Y10T428/31688; Y10T428/31692
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A light-transmissive coating composition which is ultraviolet radiation curable to a white opaque film comprising (1) between about 5 and 20 weight percent of polyvinyl butyral, (2) between about 35 and 45 weight percent of vinyl acetate, (3) between about 35 and 45 weight percent of polymerizable monomer selected from trimethylolpropane triacrylate and pentaerythritol triacrylate, and (4) between about 1 and 10 weight percent of an ultraviolet-sensitive photoinitiator.
Claim 2
Dependent Claim
68 words
A light-transmissive coating composition which is ultraviolet radiation curable to a white opaque film comprising (1) between about 5 and 20 weight percent of polyvinyl butyral, (2) between about 35 and 45 weight percent of vinyl acetate, (3) between about 35 and 45 weight percent of polymerizable monomer selected from trimethylolpropane triacrylate and pentaerythritol triacrylate, and (4) between about 1 and 10 weight percent of an ultraviolet-sensitive photoinitiator.
Claim 3
Dependent Claim
26 words
A coating composition in accordance with claim 1 wherein the polyvinyl butyral component has an average molecular weight in the range between about 10,000 and 50,000.
Claim 4
Dependent Claim
28 words
A coating composition in accordance with claim 1 wherein the polyvinyl butyral component contains less than about 15 percent of free hydroxyl, calculated as weight percent polyvinyl alcohol.
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) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |