US3759871A
Expired / Lapsed
US
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Er polythiols with epoxide resins polyetherpolythiols method of preparation and mixtures of polythioeth
Assignee: Dow Chemical Co
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Filing: 1971-08-12
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Granted: 1973-09-18
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Expires: 1991-08-12
Abstract
Abstract POLYTHIOETHERPOLYTHIOLS WITH A THIOL FUNCTIONALITY GREATER THAN 2 ARE MADE BY REACTING A POLYTHIOL WITH A TRIENE, A TETRAENE OR MIXTURES THEREOF OR MIXTURES OF THE POLYENES WITH A DIENE, IN THE PRESENCE OF A FREE RADICAL GENERATING CATALYST. THE POLYTHIOETHERPOLYTHIOLS CAN BE REACTED WITH EPOXIDE RESINS TO EFFECT CURES OF THE LATTER.
Inventors
- 👤 R Hickner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:11
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/04; C08G75/045; C08G75/12; C08L; C08L63/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
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 |