Patent US3759968A successfully refreshed from Google Patents.
US3759968A
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Silyl maleates and polysiloxane maleates
Assignee: General Electric Co
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Filing: 1971-05-17
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Granted: 1973-09-18
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Expires: 1991-05-17
Abstract
Abstract Silyl maleates and fumarates and polysiloxane maleates and fumarates useful as glass sizing agents are prepared in accordance with the present invention. The silyl maleates and polysiloxane maleates and fumarates are formed by reacting either the cis- or trans- 1,2-bis-carbalkoxyethylenes having an unsaturated alkenyl group therein with a hydrogen silane of hydrogen polysiloxane in the presence of a platinum catalyst.
Inventors
- 👤 A Berger
- 👤 T Selin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:33
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/12; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
11 words
The compound of claim 1, wherein R1 is an alkenyl radical.
Claim 2
Dependent Claim
17 words
The compound of claim 1 wherein R is propylene, M is R30 and R2, R3 are methyl.
Claim 3
Dependent Claim
12 words
The compound of claim 1 having the formula of trimethoxysilylpropyl allyl maleate.
Claim 4
Dependent Claim
16 words
A process for forming a silyl compound comprising reacting a compound selected from the group of,
Claim 5
Dependent Claim
34 words
The process of claim 5 wherein when n is equal to less than 3, the resulting product is reacted in a second reaction with a compound selected from the group consisting of R3OH and
Claim 6
Dependent Claim
9 words
THe process of claim 5 wherein R5 is allyl.
Claim 7
Dependent Claim
13 words
The process of claim 6 wherein X is chlorine and R3 is methyl.
Claim 8
Dependent Claim
19 words
The process of claim 6 wherein said second reaction is carried out in the presence of an acid acceptor.
Claim 9
Dependent Claim
13 words
The process of claim 6 wherein the acid acceptor is a trialkyl amine.
Claim 10
Dependent Claim
24 words
The process of claim 6 wherein said second reaction is carried out under reduced pressures and at a temperature range of 75*C to 100*C.
Claim 11
Dependent Claim
14 words
The process of claim 6 wherein said second reaction is carried out in xylene.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |