US3790527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible tack free silicone resins
Assignee: General Electric Co
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Filing: 1972-07-21
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Granted: 1974-02-05
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Expires: 1992-07-21
Abstract
Abstract THERE IS PROVIDED A FLEXIBLE, TACK-FREE SILICONE RESIN BY HYDROLYZING FIRST A DIORGANODIHALOSILANE IN A HYDROLYSIS MIXTURE COMPRISING WATER, ACETONE AND A WATER-IMMIXCIBLE SOLVENT AND THEN IN A SECOND ANDINDEPENDENT STEP HYDROLYZING AND ADDING TO THE SAME MIXTURE AN ORGANOTRIHALOSILANE. THE SILICONE RESIN OBTAINED BY THIS HYDROLYSIS PROCEDURE IS THE DESIRED RESIN OF THE PRESENT CASE WHICH IS NOT BRITTLE AND DRIES TO A NON-TACKY STATE IRRESPECTIVE OF WHETHER IT IS DRIED AT ROOM TEMPERATURE OR DRIED AT ELEVATED TEMPERATURES.
Inventors
- 👤 D Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:29
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |