US4348501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic compositions of epichlorohydrin rubber and carboxy-ethylene polymer resin
Assignee: Advanced Elastomer Systems LP
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Filing: 1981-04-27
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Granted: 1982-09-07
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Expires: 2001-04-27
Abstract
Abstract Thermoplastic compositions are described comprising blends of epichlorohydrin rubber and carboxy containing ethylene polymer resin.
Inventors
- 👤 Aubert Y. Coran
- 👤 Raman Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:11
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0869; C08L71/00; C08L71/02; C08L71/03; C08L63/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
An elastoplastic composition comprising a blend of carboxy containing ethylene polymer (CEP) resin comprising at least 50 mole percent of ethylene, in an amount sufficient to impart thermoplasticity to the composition, and cross-linked epichlorohydrin rubber in the form of dispersed particles of a size small enough to maintain thermoplasticity of the composition and which rubber is present in an amount sufficient to impart rubberlike elasticity so that the composition has a tension set value of about 50% or less, said cross-linked epichlorohydrin rubber being obtained by dynamic vulcanization of the blend or by vulcanization of the rubber prior to forming the blend.
Claim 2
Dependent Claim
102 words
An elastoplastic composition comprising a blend of carboxy containing ethylene polymer (CEP) resin comprising at least 50 mole percent of ethylene, in an amount sufficient to impart thermoplasticity to the composition, and cross-linked epichlorohydrin rubber in the form of dispersed particles of a size small enough to maintain thermoplasticity of the composition and which rubber is present in an amount sufficient to impart rubberlike elasticity so that the composition has a tension set value of about 50% or less, said cross-linked epichlorohydrin rubber being obtained by dynamic vulcanization of the blend or by vulcanization of the rubber prior to forming the blend.
Claim 3
Dependent Claim
25 words
The composition of claim 1 comprising about 15-85 parts by weight of CEP resin and correspondingly, about 85-15 parts by weight of cross-linked epichlorohydrin rubber.
Claim 4
Dependent Claim
23 words
The composition of claim 2 in which the cross-linked rubber particles are of a size of about 50 microns number average or less.
Claim 5
Dependent Claim
30 words
The compositions of claim 3 in which the cross-linked rubber particle size is about 0.1-10 microns number average, and said cross-linked rubber is obtained by dynamic vulcanization of the blend.
Claim 6
Dependent Claim
33 words
The composition of claim 4 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 7
Dependent Claim
18 words
The composition of claim 5 in which the CEP resin is at least partially neutralized with metal ions.
Claim 8
Dependent Claim
19 words
The composition of claim 6 in which the neutralized CEP resin is a copolymer of ethylene and methacrylic acid.
Claim 9
Dependent Claim
18 words
The composition of claim 7 in which the epichlorohydrin rubber is a copolymer of epichlorohydrin and ethylene oxide.
Claim 10
Dependent Claim
20 words
The composition of claim 8 in which the epichlorohydrin rubber is cross-linked by a low molecular weight polyamide cross-linking agent.
Claim 11
Dependent Claim
18 words
The composition of claim 5 in which the CEP resin is a copolymer of ethylene and acrylic acid.
Claim 12
Dependent Claim
16 words
The composition of claim 10 in which the CEP resin comprises about 5-10 percent acrylic acid.
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) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |