US2999077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing organopolysiloxane elastomers
Assignee: Wacker Chemie AG
•
Filing: 1958-04-09
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Granted: 1961-09-05
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Expires: 1978-04-09
Abstract
No abstract record available.
Inventors
- 👤 Nitzsche Siegfried
- 👤 Wick Manfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K3/00; C08K3/01; C08K3/013; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A COMPOSITION CONSISTING ESSENTIALLY OF (1) AN ORGANOPOLYSILOXANE COPOLYMER OF DIORGANOSILOXANE UNITS OF THE FORMULA R2SIO WHERE EACH R IS AN ORGANIC RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS, ARYL RADICALS, HALOGENATED ALKYL RADICALS AND HALOGENATED ARYL RADICALS, AND 0.1 TO 2.0 MOL PERCENT OF METHYLHYDROGENSILOXANE UNITS, (2) A FILLER AND (3) AN ORGANIC TIN COMPOUND SELECTED FROM THE GROUP CONSISTING OF TIN RICINOLEATE, DIBUTYL TIN DILAURATE AND DIOCTYL TIN DIACETATE.
Claim 2
Dependent Claim
73 words
A COMPOSITION CONSISTING ESSENTIALLY OF (1) AN ORGANOPOLYSILOXANE COPOLYMER OF DIORGANOSILOXANE UNITS OF THE FORMULA R2SIO WHERE EACH R IS AN ORGANIC RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS, ARYL RADICALS, HALOGENATED ALKYL RADICALS AND HALOGENATED ARYL RADICALS, AND 0.1 TO 2.0 MOL PERCENT OF METHYLHYDROGENSILOXANE UNITS, (2) A FILLER AND (3) AN ORGANIC TIN COMPOUND SELECTED FROM THE GROUP CONSISTING OF TIN RICINOLEATE, DIBUTYL TIN DILAURATE AND DIOCTYL TIN DIACETATE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |