US4126649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefinic compositions containing e/va copolymer
Assignee: Orkem SA
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Filing: 1977-06-16
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Granted: 1978-11-21
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Expires: 1997-06-16
Abstract
Abstract Polyolefin compositions useful for making films having improved tensiometric properties and strength. The compositions comprise from 92 to 99% by weight of (1) a polyolefin having a melt index of 0.5 to 5 that is either isotactic poly-1-butene or a butene-ethylene copolymer containing less than 2% of ethylene units, and (2) from 1 to 8% of an ethylene-vinyl acetate copolymer having a vinyl acetate content of from 5 to 35% by weight and a melt index of from 0.5 to 5.
Inventors
- 👤 Jean-Claude Decroix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:33
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
56 words
Polyolefin compositions comprising: (a) from 92 to 99% by weight of isotactic poly-1-butene having a melt index of from 0.5 to 5, and (b) from 1 to 8% by weight of an ethylene-vinyl acetate copolymer having a melt index of from 0.5 to 5 and a vinyl acetate content of from 9 to 35% by weight.
Claim 2
Dependent Claim
56 words
Polyolefin compositions comprising: (a) from 92 to 99% by weight of isotactic poly-1-butene having a melt index of from 0.5 to 5, and (b) from 1 to 8% by weight of an ethylene-vinyl acetate copolymer having a melt index of from 0.5 to 5 and a vinyl acetate content of from 9 to 35% by weight.
Claim 3
Dependent Claim
23 words
Polyolefin compositions according to claim 1, wherein said ethylene-vinyl acetate copolymer has a vinyl acetate content of from 9 to 25% by weight.
Claim 4
Dependent Claim
19 words
Polyolefin compositions according to claim 1, wherein said isotactic poly-1-butene has a melt index of from 2 to 4.
Claim 5
Dependent Claim
60 words
Film formed from a polyolefin composition comprising: (a) from 92 to 99% by weight of isotactic poly-1-butene having a melt index of from 0.5 to 5, and (b) from 1 to 8% by weight of an ethylene-vinyl acetate copolymer having a melt index of from 0.5 to 5 and a vinyl acetate content of from 9 to 35% by weight.
Claim 6
Dependent Claim
60 words
Film formed from a polyolefin composition comprising: (a) from 92 to 99% by weight of isotactic poly-1-butene having a melt index of from 0.5 to 5, and (b) from 1 to 8% by weight of an ethylene-vinyl acetate copolymer having a melt index of from 0.5 to 5 and a vinyl acetate content of from 9 to 35% by weight.
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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |