Patent US4288570A successfully refreshed from Google Patents.
US4288570A
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US
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Thermoplastic compositions of epichlorohydrin rubber and poly(alkyl methacrylate) resin
Assignee: Advanced Elastomer Systems LP
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Filing: 1980-05-12
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Granted: 1981-09-08
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Expires: 2000-05-12
Abstract
Abstract Thermoplastic compositions are described comprising blends of epichlorohydrin rubber and poly(alkyl methacrylate) resin. Compositions in which the rubber is cross-linked are also described.
Inventors
- 👤 Aubert Y. Coran
- 👤 Raman Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:03
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L71/00; C08L71/02; C08L71/03
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
An elastoplastic composition comprising a blend of about 75 to 50 parts by weight of cross-linked epichlorohydrin rubber in the form of dispersed particles of a size of 50 microns number average or less and about 25 to 50 parts by weight of poly(alkyl methacrylate) resin per 100 total parts by weight of epichlorohydrin rubber and poly(alkyl methacrylate) resin, which composition is elastomeric and processable as a thermoplastic.
Claim 2
Dependent Claim
68 words
An elastoplastic composition comprising a blend of about 75 to 50 parts by weight of cross-linked epichlorohydrin rubber in the form of dispersed particles of a size of 50 microns number average or less and about 25 to 50 parts by weight of poly(alkyl methacrylate) resin per 100 total parts by weight of epichlorohydrin rubber and poly(alkyl methacrylate) resin, which composition is elastomeric and processable as a thermoplastic.
Claim 3
Dependent Claim
15 words
The composition of claim 1 in which the poly(alkyl methacrylate) resin is poly(methyl methacrylate) resin.
Claim 4
Dependent Claim
15 words
The composition of claim 2 in which the epichlorohydrin rubber is a homopolymer for epichlorohydrin.
Claim 5
Dependent Claim
18 words
The composition of claim 2 in which the epichlorohydrin rubber is a copolymer of epichlorohydrin and ethylene oxide.
Claim 6
Dependent Claim
17 words
The composition of claim 2 in which the epichlorohydrin rubber is cross-linked by a methylol phenolic curative.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |