Patent US4843129A successfully refreshed from Google Patents.
US4843129A
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US
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Elastomer-plastic blends
Assignee: Advanced Elastomer Systems LP
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Filing: 1986-03-03
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Granted: 1989-06-27
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Expires: 2006-03-03
Abstract
Abstract A composition comprising: (a) at least one copolymer having at least one of &upbar& Mw/ &upbar& Mn less than 2 and &upbar& Mz/ &upbar& Mw less than 1.8; and (b) at least one plastic composition. The composition can be produced by preparing the elastomer and then blending it with the plastic. The composition can be subjected to an additional step of curing.
Inventors
- 👤 Lawrence Spenadel
- 👤 Joel H. Grosser
- 👤 Stephen M. Dwyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:00
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08F; C08F297/00; C08F297/06; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K3/26; C08K3/34; C08K3/346; C08K5/00; C08K5/04; C08K5/09; C08K5/10; C08L101/00; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0853; C08L23/10; C08L23/16; C08L53/00; C08L77/00; C08L91/00; C08L2205/00; C08L2205/03; C08L2312/00; C08L2312/04; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/14
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
92 words
A composition comprising: (a) at least one elastomer copolymer comprising ethylene and at least one other alpha-olefin, having a weight average molecular weight of at least 20,000, and at least one of M w /M n less than 2 and M z /M w less than 1.8, wherein at least two portions of essentially each copolymer chain of said copolymer, each portion comprising at least about 5 wt. % of the chain, differ in composition from one another by at least about 5 wt.% ethylene; and (b) at least one plastic composition.
Claim 2
Dependent Claim
92 words
A composition comprising: (a) at least one elastomer copolymer comprising ethylene and at least one other alpha-olefin, having a weight average molecular weight of at least 20,000, and at least one of M w /M n less than 2 and M z /M w less than 1.8, wherein at least two portions of essentially each copolymer chain of said copolymer, each portion comprising at least about 5 wt. % of the chain, differ in composition from one another by at least about 5 wt.% ethylene; and (b) at least one plastic composition.
Claim 3
Dependent Claim
33 words
A composition as defined by claim 1 wherein said at least one plastic composition comprises a continuous phase and said at least one copolymer comprises a discontinuous phase dispersed within the continuous phase.
Claim 4
Dependent Claim
22 words
The composition as defined by claim 1 wherein said at least one copolymer has a M w /M n less than 1.4.
Claim 5
Dependent Claim
22 words
The composition as defined by claim 1 wherein said at least one copolymer has a M z /M w less than 1.3.
Claim 6
Dependent Claim
23 words
The composition as defined by claim 1 wherein said at least one plastic composition is selected from the group consisting of thermoplastic compositions.
Claim 7
Dependent Claim
33 words
The composition as defined by claim 5 wherein said at least one plastic composition comprises a continuous phase and said at least one copolymer comprises a discontinuous phase dispersed within the continuous phase.
Claim 8
Dependent Claim
55 words
The composition as defined by claim 5 wherein said at least one plastic composition is a thermoplastic composition selected from the group consisting of polypropylenes, polyethylenes, ethylene/vinyl acetate copolymers, polyamides, polyphenyl oxides, polycarbonates, ethylene/methyl acrylate copolymers, polymethyl methacrylates, polyvinyl chlorides, acrylonitrile-butadiene-styrenes, polyethyl methacrylates, polystyrenes, polybutylenes, polyesters, acetals, alkyds, polyvinyl acetates, acrylics, and heteroblock propylene-ethylene copolymers.
Claim 9
Dependent Claim
16 words
The composition as defined by claim 7 wherein said at least one thermoplastic composition is polypropylene.
Claim 10
Dependent Claim
18 words
The composition as defined by claim 7 wherein said at least one thermoplastic composition comprises polypropylene and polyethylene.
Claim 11
Dependent Claim
30 words
The composition as defined by claim 9 comprising at least approximately 70-95% by weight propylene, 2-20% by weight polyethylene, and approximately 2-28% by weight of said at least one copolymer.
Claim 12
Dependent Claim
26 words
The composition as defined by claim 8 comprising approximately 2-50% by weight of said at least one copolymer, and approximately 98-50% by weight of said polypropylene.
Claim 13
Dependent Claim
60 words
The composition as defined by claim 2 wherein said at least one plastic composition is polypropylene, and comprises at least approximately 90 wt. % of the composition, and wherein the at least one copolymer is at least one member selected from the group consisting of ethylene-propylene copolymer and ethylene-propyleneterpolymer, and comprises approximately 10 wt. % or less of the composition.
Claim 14
Dependent Claim
26 words
The composition as defined by claim 1 wherein said at least one copolymer is an ethylene alpha-olefin copolymer wherein the alpha-olefin monomer contains 3-18 carbon atoms.
Claim 15
Dependent Claim
17 words
The composition as defined by claim 2 wherein said at least one copolymer is an ethylene-propylene copolymer.
Claim 16
Dependent Claim
46 words
The composition as defined by claim 1 wherein said at least one copolymer is such that 95 wt.% of the copolymer chains of said at least one copolymer have an ethylene composition that differs from its average weight percent ethylene composition by 15 wt.% or less.
Claim 17
Dependent Claim
7 words
A cured composition according to claim 1.
Claim 18
Dependent Claim
33 words
The composition as defined by claim 16 comprising more than approximately 50% and up to approximately 80% by weight of the at least one copolymer, and approximately 50% or less by weight polypropylene.
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |