US2858294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizing dialkylsiloxanes with aluminum containing compounds
Assignee: Kali Chemie AG
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Filing: 1956-05-17
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Granted: 1958-10-28
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Expires: 1976-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jenkner Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:45
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD FOR THE POLYMERIZATION OF LIQUID DIALKYLPOLYSILOXANES, COMPRISING REACTING A LIQUID DIALKYLPOLYSILOXANE WITH AN AMOUNT OF ABOUT 0.1 TO 12 PERCENT BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF ALUMINUM TRIALKYLS AND DIETHYL-ALUMINUM TRIMETHYLSILANOLATE AT A TEMPERATURE OF ABOUT 5 TO 60*C. UNTIL A GEL HAS BEEN FORMED.
Claim 2
Independent Claim
51 words
A METHOD FOR THE POLYMERIZATION OF LIQUID DIALKYLPOLYSILOXANES, COMPRISING REACTING A LIQUID DIALKYLPOLYSILOXANE WITH AN AMOUNT OF ABOUT 0.1 TO 12 PERCENT BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF ALUMINUM TRIALKYLS AND DIETHYL-ALUMINUM TRIMETHYLSILANOLATE AT A TEMPERATURE OF ABOUT 5 TO 60*C. UNTIL A GEL HAS BEEN FORMED.
References Cited (Backward Citations)
US2460799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |