US4855378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosilicon compounds and crosslinkable organopolysiloxane compositions containing the organosilicon compounds
Assignee: Wacker Chemie AG
•
Filing: 1987-09-04
•
Granted: 1989-08-08
•
Expires: 2007-09-04
Abstract
Abstract Organosilicon compounds and organopolysiloxane compositions which are crosslinked by the addition of Si-bonded hydrogen with SiC-bonded vinyl groups and contain the organosilicon compounds as additives for improving the adhesion of the resultant elastomers on the substrates on which they are formed.
Inventors
- 👤 Ferdinand Pradl
- 👤 Carlos Weise
- 👤 Karl-Heinrich Wegehaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
An organopolysiloxane composition which is crosslinked by the addition of Si-bonded hydrogen to SiC-bonded vinyl groups to form organopolysiloxane elastomers which comprises a diorganopolysiloxane containing SiC-bonded vinyl groups, a compound containing Si-bonded hydrogen, a catalyst which promotes the addition of Si-bonded hydrogen to SiC-bonded vinyl groups and a compound selected from the group consisting of an allyl-3,4-dimethyoxyphenyl acetate, allyl cyanoacetate, allyl acetoacetate, allyl diacetoacetate and an allyl p-methoxyphenylacetate.
Claim 2
Dependent Claim
68 words
An organopolysiloxane composition which is crosslinked by the addition of Si-bonded hydrogen to SiC-bonded vinyl groups to form organopolysiloxane elastomers which comprises a diorganopolysiloxane containing SiC-bonded vinyl groups, a compound containing Si-bonded hydrogen, a catalyst which promotes the addition of Si-bonded hydrogen to SiC-bonded vinyl groups and a compound selected from the group consisting of an allyl-3,4-dimethyoxyphenyl acetate, allyl cyanoacetate, allyl acetoacetate, allyl diacetoacetate and an allyl p-methoxyphenylacetate.
Claim 3
Dependent Claim
43 words
The composition of claim 1, wherein the compound is present in the organopolysiloxane composition in an amount of from 0.01 to 10 percent by weight, based on the total weight of the organopolysiloxane containing Si-bonded hydrogen and the diorganopolysiloxane containing SiC-bonded vinyl groups.
Claim 4
Dependent Claim
11 words
The composition of claim 1, wherein the compound is allyl-3,4-dimethoxyphenyl acetate.
Claim 5
Dependent Claim
11 words
The composition of claim 1, wherein the compound is allyl cyanoacetate.
Claim 6
Dependent Claim
11 words
The composition of claim 1, wherein the compound is allyl acetoacetate.
References Cited (Backward Citations)
US32504A
Cited
US3445420A
Cited
US3730932A
Cited
US3941741A
Cited
US3888815A
Cited
US3882083A
Cited
US4256870A
Cited
US4426240A
Cited
US4340170A
Cited
US4347346A
Cited
US4395507A
Cited
US4463127A
Cited
US4539357A
Cited
US4476166A
Cited
USRE32504E
Cited
US4504645A
Cited
US4562096A
Cited
US4677161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |