US3691206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer for cured silicone release agents
Assignee: Dow Silicones Corp
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Filing: 1971-03-29
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Granted: 1972-09-12
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Expires: 1991-03-29
Abstract
Abstract A composition useful as a coupling agent for promoting the adhesion of a cured organopolysiloxane release agent to a cellulosic substrate is the reaction product of WHERE R is a divalent or trivalent radical of carbon and hydrogen, R'' is a lower alkyl, n is 1 to 2 and R'''' is a monovalent hydrocarbon radical. An example is a reaction product of AND VINYLTRIACETOXYSILANE.
Inventors
- 👤 Hal J Northrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:20
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/24; D21H19/32; C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08L; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
The coupling agent of claim 1 where (a) is
Claim 2
Dependent Claim
10 words
The coupling agent of claim 2 where (b) is vinyltriacetoxysilane.
Claim 3
Dependent Claim
10 words
The coupling agent of claim 2 where (b) is methyltriacetoxysilane.
Claim 4
Dependent Claim
10 words
The coupling agent of claim 2 where (b) is ethyltriacetoxysilane.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |