Patent US3759807A successfully refreshed from Google Patents.
US3759807A
Expired / Lapsed
US
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Photopolymerization process using combination of organic carbonyls and amines
Assignee: Union Carbide Corp
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Filing: 1972-01-19
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Granted: 1973-09-18
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Expires: 1992-01-19
Abstract
Abstract VARIOUS COMBINATIONS OF CERTAIN ORGANIC CARBONYL PHOTOSENSITIZER COMPOUNDS AND CERTAIN ORGANIC AMINE ACTIVATORS EXERT AN UNEXPECTED BENEFICIAL EFFECT ON THE PHOTOPOLYMERIZATION OF CERTAIN POLYMERIZABLE MONOMERS OR OLIGOMERS AND COATIN COMPOSITIONS CONTAINING THE SAME. THE SUITABLE CARBONYL COMPOUNDS CONTAIN A KETONIC OXYGEN, FOR EXAMPLE ONE CAN USE ACETOPHENONE OR XANTHONE, AND THE AMINES CAN BE PRIMARY, SECONDARY OR TERTIARY AMINES, FOR EXAMPLE, ONE CAN USE BUTYLDIETHANOLAMINE, TRIETHANOLAMINE, DI-N-BUTYLAMINE OR MORPHOLINE.
Inventors
- 👤 C Osborn
- 👤 D Trecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:46
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; C; C08; C08F; C08F2/00; C08F2/46; C08F20/00; C08F20/62
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |