US3706591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing organopolysiloxane elastomers
Assignee: Wacker Chemie AG
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Filing: 1970-11-09
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Granted: 1972-12-19
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Expires: 1990-11-09
Abstract
Abstract LINEAR, LIQUID ORGANOPOLYSILOXANES ARE VULCANIZED AND CURED TO FORM ELASTOMERS EMPLOYING POLYCYCLICDIORGANOPOLYSILOXANES CONTAINING AT LEAST ONE GROUP OF THE FORMULA =SI<(-O-SI-R2-O-SI(-R2)-O-) WHERE R IS A MONOVALENT HYDROCARBYL OR SUBSTITUTED HYDROCARBYL RADICAL AND AN ACID CATALYST. THE SILICONE RUBBER SO PRODUCED ADHERES FIRMLY TO SILICEOUS SUBSTRATES AND MAY BE USED TO FORM LAMINATES OF GLASS.
Inventors
- 👤 Siegfried Nitzsche
- 👤 Karl-Heinrich Wegehaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:11
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |