Patent US4297453A successfully refreshed from Google Patents.
US4297453A
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US
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Compositions of epichlorohydrin rubber and nylon
Assignee: Advanced Elastomer Systems LP
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Filing: 1980-05-12
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Granted: 1981-10-27
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Expires: 2000-05-12
Abstract
Abstract Compositions are described comprising blends of cured epichlorohydrin rubber and nylon.
Inventors
- 👤 Aubert Y. Coran
- 👤 Raman Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:54
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C08L71/03; C08L77/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
24 words
A composition comprising a blend of about 20-55 parts by weight of nylon, and, correspondingly, about 80-45 parts by weight of cured epichlorohydrin rubber.
Claim 2
Dependent Claim
24 words
A composition comprising a blend of about 20-55 parts by weight of nylon, and, correspondingly, about 80-45 parts by weight of cured epichlorohydrin rubber.
Claim 3
Dependent Claim
20 words
The composition of claim 1 which comprises 50 or more parts by weight of epichlorohydrin rubber and which is elastomeric.
Claim 4
Dependent Claim
25 words
The composition of claim 2 in which the rubber is in the form of discrete dispersed particles and the composition is processable as a thermoplastic.
Claim 5
Dependent Claim
38 words
The composition of claim 3 in which the rubber is cured to the extent that no more than 20 weight percent of the rubber is extractable in a solvent in which uncured epichlorohydrin rubber is essentially completely soluble.
Claim 6
Dependent Claim
17 words
The composition of claim 4 in which the nylon has a melting point between about 160°-250° C.
Claim 7
Dependent Claim
23 words
The composition of claim 5 in which the epichlorohydrin rubber is a homopolymer of epichlorohydrin or a copolymer of epichlorohydrin and ethylene oxide.
Claim 8
Dependent Claim
42 words
An elastoplastic composition comprising a blend of about 20-55 parts by weight of nylon, and correspondingly,, about 80-45 parts by weight of cured epichlorohydrin rubber in the form of dispersed particles of a size small enough to maintain thermoplasticity of the composition.
Claim 9
Dependent Claim
42 words
An elastoplastic composition comprising a blend of about 20-55 parts by weight of nylon, and correspondingly,, about 80-45 parts by weight of cured epichlorohydrin rubber in the form of dispersed particles of a size small enough to maintain thermoplasticity of the composition.
Claim 10
Dependent Claim
38 words
The composition of claim 7 in which the rubber is cured to the extent that no more than 10 weight percent of the rubber is extractable in a solvent in which uncured epichlorohydrin rubber is essentially completely soluble.
Claim 11
Dependent Claim
23 words
The composition of claim 8 in which the cured rubber particles are of a size of about 50 microns number average or less.
Claim 12
Dependent Claim
20 words
The composition of claim 9 in which the cured rubber particle size is about 0.1 to 10 microns number average.
Claim 13
Dependent Claim
17 words
The composition of claim 10 in which the cured rubber particle size is 2 microns or less.
Claim 14
Dependent Claim
33 words
The composition of claim 10 in which the rubber is cross-linked to the extent that the cross-link density of the rubber is about 3×10 -5 to 3×10 -4 moles per milliliter of rubber.
Claim 15
Dependent Claim
17 words
The composition of claim 12 in which the nylon has a melting point between about 160°-250° C.
Claim 16
Dependent Claim
23 words
The composition of claim 13 in which the epichlorohydrin rubber is a homopolymer of epichlorohydrin or a copolymer of epichlorohydrin and ethylene oxide.
Claim 17
Dependent Claim
16 words
The composition of claim 14 in which the rubber is cured with a polyamine cross-linking agent.
Claim 18
Dependent Claim
13 words
The composition of claim 14 in which the epichlorohydrin rubber is sulfur vulcanizable.
Claim 19
Dependent Claim
14 words
The composition of claim 16 in which the rubber is cured with sulfur curative.
Claim 20
Dependent Claim
14 words
The composition of claim 14 in which the rubber is a homopolymer of epichlorohydrin.
Claim 21
Dependent Claim
17 words
The composition of claim 14 in which the rubber is a copolymer of epichlorohydrin and ethylene oxide.
Claim 22
Dependent Claim
12 words
The composition of claim 18 in which the nylon is Nylon 6,66,610.
Claim 23
Dependent Claim
12 words
The composition of claim 19 in which the nylon is Nylon 6,66,610.
Claim 24
Dependent Claim
12 words
The composition of claim 19 in which the nylon is Nylon 6,66.
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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |