US4374882A
Expired / Lapsed
US
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Compositions comprising low pressure ethylene polymers and alkylene-alkyl acrylate copolymers; and spiral wound hose products fabricated therefrom
Assignee: Union Carbide Corp
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Filing: 1981-12-18
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Granted: 1983-02-22
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Expires: 2001-12-18
Abstract
Abstract The disclosure of this application is directed to a composition suitable for use in the fabrication of spiral wound hose comprising a mixture of a substantially linear ethylene polymer having a density of about 0.915 to about 0.935 and a melt index of about 0.1 to about 10.0, produced under low pressures, and an alkylene-alkyl acrylate copolymer containing at least about 19 percent by weight combined alkyl acrylate and having a melt index of about 0.5 to about 6.0.
Inventors
- 👤 George M. Harlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:40
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A composition comprising a subsequently linear ethylene polymer having a melt index of about 0.1 to about 10.0 and a density of about 0.915 to about 0.935 and in an amount of about 20 to about 90 percent by weight, an alkylene-alkyl acrylate copolymer having a combined alkyl acrylate content of at least about 19 percent by weight and having a melt index of about 0.5 to about 6.0.
Claim 2
Dependent Claim
69 words
A composition comprising a subsequently linear ethylene polymer having a melt index of about 0.1 to about 10.0 and a density of about 0.915 to about 0.935 and in an amount of about 20 to about 90 percent by weight, an alkylene-alkyl acrylate copolymer having a combined alkyl acrylate content of at least about 19 percent by weight and having a melt index of about 0.5 to about 6.0.
Claim 3
Dependent Claim
64 words
A composition comprising a substantially linear ethylene polymer having a melt index of about 0.3 to about 2.0 and a density of about 0.919 to about 0.925 and in an amount of about 40 to about 70 percent by weight, an alkylene-alkyl acrylate copolymer containing about 19 percent by weight combined alkyl acrylate and having a melt index of about 1.0 to about 2.0.
Claim 4
Dependent Claim
64 words
A composition comprising a substantially linear ethylene polymer having a melt index of about 0.3 to about 2.0 and a density of about 0.919 to about 0.925 and in an amount of about 40 to about 70 percent by weight, an alkylene-alkyl acrylate copolymer containing about 19 percent by weight combined alkyl acrylate and having a melt index of about 1.0 to about 2.0.
Claim 5
Dependent Claim
15 words
A composition as defined in claim 1 wherein the ethylene polymer is an ethylene-butene-1 copolymer.
Claim 6
Dependent Claim
17 words
A composition as defined in claim 1 wherein the alkylene-alkyl acrylate copolymer is an ethylene-ethyl acrylate copolymer.
Claim 7
Dependent Claim
25 words
A composition as defined in claim 1 wherein the ethylene polymer is an ethylene-butene-1 copolymer and the alkylene-alkyl acrylate copolymer is an ethylene-ethyl acrylate copolymer.
Claim 8
Dependent Claim
25 words
A composition as defined in claim 2 wherein the ethylene polymer is an ethylene-butene-1 copolymer and the alkylene-alkyl acrylate copolymer is an ethylene-ethyl acrylate copolymer.
Claim 9
Dependent Claim
12 words
A spiral wound hose produced from the composition defined in claim 1.
Claim 10
Dependent Claim
12 words
A spiral wound hose produced from the composition defined in claim 2.
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) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |