US3697620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizable elastomer composition containing triarylphosphine and triallylcyanurate
Assignee: Wyeth Holdings LLC
•
Filing: 1970-04-22
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Granted: 1972-10-10
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Expires: 1990-04-22
Abstract
Abstract A vulcanizable composition having improved processing safety, as well as an improved resistance to heat aging, is provided which comprises an acrylic elastomer having active halogen or epoxy groups and a triarylphosphine and triallylcyanurate.
Inventors
- 👤 Nicholas Peter Ermidis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:43
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08K; C08K5/00; C08K5/49; C08K5/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
10 words
The composition of claim 1 wherein the triarylphosphine is triphenylphosphine.
Claim 2
Dependent Claim
17 words
The composition of claim 1 wherein said elastomer is an acrylic ester elastomer containing active halogen atoms.
Claim 3
Dependent Claim
16 words
The composition of claim 1 wherein said elastomer is an acrylic ester elastomer containing epoxy groups.
Claim 4
Dependent Claim
37 words
A vulcanizable mixture comprising a copolymer of ethyl acrylate and vinyl chloroacetate, from about 1 to about 5 parts of triphenylphosphine and from about 2 to about 5 parts of triallylcyanurate per 100 parts of said copolymer.
Claim 5
Dependent Claim
28 words
The method of vulcanizing an acrylic elastomer which comprises heating the mixture of claim 1 at a temperature above about 330* F. until a vulcanized elastomer is obtained.
Claim 6
Dependent Claim
9 words
The vulcanized product of the process of claim 6.
Claim 7
Dependent Claim
10 words
The method of claim 6 wherein said triarylphosphine is triphenylphosphine.
Claim 8
Dependent Claim
28 words
A method of vulcanizing an acrylic elastomer which comprises heating the mixture of claim 2 at a temperature above about 330* F. until a vulcanized elastomer is obtained.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |