US3662023A
Expired / Lapsed
US
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Chemically curable liquid polyene-polythiol polymer compositions
Assignee: WR Grace and Co
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Filing: 1970-06-23
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Granted: 1972-05-09
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Expires: 1990-06-23
Abstract
Abstract THE INVENTION DISCLOSED IS FOR A NEW CHEMICALLY CURABLE LIQUID POLYMER COMPOSITION WHICH INCLUDES A LIQUID POLYENE COMPONENT HAVING A MOLECULAR CONTAINING AT LEAST TWO UNSATURATED CARBON-TO-CARBON BONDS DISPOSED AT TERMINAL POSITIONS ON A MAIN CHAIN BACKBONE OF THE MOLECULE, AND A POLYTHIOL COMPONENT HAVING A MOLECULE CONTAINING A MULTIPLICITY OF PENDANT OR TERMINALLY POSITIONED -SH FUNCTIONAL GROUPS PER AVERAGE MOLECULE. THE CHEMICALLY CURABLE LIQUID POLYMER COMPOSITION UPON CURING IN THE PRESENCE OF A CHEMICAL FREE RADICAL GENERATING REAGENT FORMS ODORLESS, SOLID, ELASTORMERIC PRODUCTS WHICH MAY SERVE AS SEALANTS, COATINGS, ADHESIVE, AND MOLDED ARTICLES.
Inventors
- 👤 Clifton L Kehr
- 👤 Walter R Wszolek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:40
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/0275; B; B65; B65H; B65H7/00; C; C08; C08F; C08F299/00; C08F299/02; C08F299/022; C08F36/00; C08F36/02; C08F36/04; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/6715; C08G18/70; C08G18/81; C08G18/83; C08G18/834; C08G18/835; C08G71/00; C08G75/00; C08G75/02; C08G75/04; C08G75/045; C08G75/12; Y; Y10; Y10S; Y10S525/00; Y10S525/92; Y10S525/921; Y10S525/925; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31533
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |