Patent US2608240A successfully refreshed from Google Patents.
Patent US3801676A successfully refreshed from Google Patents.
US3801676A
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US
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Polyetherpolythiols,method of preparation and mixtures of polythioether-polythiols with epoxide resins
Assignee: Dow Chemical Co
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Filing: 1971-08-12
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Granted: 1974-04-02
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Expires: 1991-08-12
Abstract
Abstract POLYTHIOETHERPOLYTHIOLS WITH A THIOL FUNCTIONALITY GREATER THAN 2 ARE MADE BY 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
2026-10-26 19:14
CPC Classifications
C; C07; C07C; C07C321/00
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |