Patent US4617646A successfully refreshed from Google Patents.
US4078014A
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Composition of polyamide, polyethylene ionomer copolymer
Assignee: EIDP Inc
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Filing: 1976-06-10
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Granted: 1978-03-07
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Expires: 1996-06-10
Abstract
Abstract A composition consisting essentially of 65 to 89% by weight of crystallizable polyamide, 10 to 30% by weight polyethylene, and 1 to 20% by weight of a copolymer comprising polymerized units of ethylene and at least one α,β-ethylenically unsaturated carboxylic acid having from 3 to 8 carbon atoms, the copolymer having from 15 to 80% of carboxylic acid groups ionized by neutralization with metal ions of zinc, cadmium or lead. The composition possesses good tensile properties including toughness and is useful for moldings and insulated wire jacketing.
Inventors
- 👤 Howard Warner Starkweather, Jr.
- 👤 Michael Joseph Mutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:41
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/305; C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A composition which consists essentially of 65 to 89% by weight of crystallizable polyamide, 10 to 30% by weight of polyethylene, and 1 to 20% by weight of a copolymer comprising polymerized units of ethylene and at least one α,β-ethylenically unsaturated carboxylic acid having from 3 to 8 carbon atoms, the copolymer having from 15 to 80% of carboxylic acid groups ionized by neutralization with metal ions selected from the class consisting of zinc, cadmium and lead ions.
Claim 2
Dependent Claim
78 words
A composition which consists essentially of 65 to 89% by weight of crystallizable polyamide, 10 to 30% by weight of polyethylene, and 1 to 20% by weight of a copolymer comprising polymerized units of ethylene and at least one α,β-ethylenically unsaturated carboxylic acid having from 3 to 8 carbon atoms, the copolymer having from 15 to 80% of carboxylic acid groups ionized by neutralization with metal ions selected from the class consisting of zinc, cadmium and lead ions.
Claim 3
Dependent Claim
15 words
The composition of claim 1 wherein 70 to 80% by weight of polyamide is present.
Claim 4
Dependent Claim
15 words
The composition of claim 1 wherein the polyethylene has a density of at least 0.95.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the metal ion is zinc.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein a range of neutralization is from 45 to 65%.
Claim 7
Dependent Claim
23 words
The composition of claim 1 wherein the polyethylene is present in domains, the majority of which have diameters no greater than 1 micron.
Claim 8
Dependent Claim
17 words
The composition of claim 1 wherein 2 to 5 percent by weight of the copolymer is present.
Claim 9
Dependent Claim
21 words
The composition of claim 2 wherein the weight ratio of polyethylene to ionic copolymer is not greater than 7 to 1.
Claim 10
Dependent Claim
17 words
The composition of claim 1 wherein the copolymer comprises at least 80 mol percent ethylene polymerized units.
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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |