US5206294A
Expired / Lapsed
US
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Thermoplastic polymer alloy composition
Assignee: EIDP Inc
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Filing: 1991-11-06
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Granted: 1993-04-27
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Expires: 2011-11-06
Abstract
Abstract Thermoplastic polymer alloy compositions are provided consisting of a blend of polypropylene, ethylene copolymer ionomer resin, ethylene/glycidyl acrylate or methacrylate copolymer, and uncrosslinked ethylene propylene rubber. The compositions are particularly useful in applications where a wide range of temperature and abrasive conditions are encountered.
Inventors
- 👤 Robert L. Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:09
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/16; C08L23/0846; C08L23/0869; C08L23/0876; C08L23/0884; C08L23/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
67 words
A thermoplastic polymer alloy composition comprising a blend of a) 10-40 wt. % polypropylene, b) 15-50 wt. % uncrosslinked ethylene propylene copolymer rubber having an ethylene content of 60-80 wt. %, c) 20-60 wt. % of an ionomeric copolymer of ethylene and an alpha, beta-unsaturated C 3 -C 8 carboxylic acid, and d) 1-5 wt. % of a copolymer of ethylene and glycidyl acrylate or glycidyl methacrylate.
Claim 2
Dependent Claim
67 words
A thermoplastic polymer alloy composition comprising a blend of a) 10-40 wt. % polypropylene, b) 15-50 wt. % uncrosslinked ethylene propylene copolymer rubber having an ethylene content of 60-80 wt. %, c) 20-60 wt. % of an ionomeric copolymer of ethylene and an alpha, beta-unsaturated C 3 -C 8 carboxylic acid, and d) 1-5 wt. % of a copolymer of ethylene and glycidyl acrylate or glycidyl methacrylate.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the polypropylene is present in an amount of 20-30 wt. %.
Claim 4
Dependent Claim
21 words
The composition of claim 1 wherein the uncrosslinked ethylene propylene copolymer rubber is present in an amount of 25-35 wt. %.
Claim 5
Dependent Claim
30 words
The composition of claim 1 wherein the ionomeric copolymer of ethylene and an alpha, beta-unsaturated C 3 -C 8 carboxylic acid is present in an amount of 30-50 wt. %.
Claim 6
Dependent Claim
25 words
The composition of claim 1 wherein the copolymer of ethylene and glycidyl acrylate or glycidyl methacrylate is present in an amount of 2-3 wt. %.
Claim 7
Dependent Claim
17 words
The composition of claim 1 wherein the ethylene propylene rubber is copolymer of ethylene, propylene, and 1,4-hexadiene.
Claim 8
Dependent Claim
22 words
The composition of claim 1 wherein the copolymer of ethylene and glycidyl acrylate or glycidyl methacrylate is an ethylene/n-butyl acrylate/glycidyl methacrylate copolymer.
Claim 9
Dependent Claim
71 words
A process for the preparation of a thermoplastic polymer alloy which comprises melt blending a) 10-40 wt. % polypropylene, b) 15-50 wt. % uncrosslinked ethylene propylene copolymer rubber having an ethylene content of 60-80 wt. %, c) 20-60wt. % of an ionomeric copolymer of ethylene and an alpha, beta-unsaturated C 3 -C 8 carboxylic acid, and d) 1-5 wt. % of a copolymer of ethylene and glycidyl acrylate or glycidyl methacrylate.
Claim 10
Dependent Claim
71 words
A process for the preparation of a thermoplastic polymer alloy which comprises melt blending a) 10-40 wt. % polypropylene, b) 15-50 wt. % uncrosslinked ethylene propylene copolymer rubber having an ethylene content of 60-80 wt. %, c) 20-60wt. % of an ionomeric copolymer of ethylene and an alpha, beta-unsaturated C 3 -C 8 carboxylic acid, and d) 1-5 wt. % of a copolymer of ethylene and glycidyl acrylate or glycidyl methacrylate.
Claim 11
Dependent Claim
12 words
A thermoformed instrument panel skin made from the composition of claim 1.
Claim 12
Dependent Claim
33 words
The composition of claim 1 wherein the ionomeric copolymer contains copolymerized units of an alkyl acrylate selected from the group consisting of n-propyl acrylate, n-butyl acrylate, n-octyl acrylate, 2-ethylhexyl acrylate, and 2-methoxyethyl acrylate.
Claim 13
Dependent Claim
12 words
The composition of claim 10 wherein the alkyl acrylate is n-butyl acrylate.
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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) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |