US5011891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomer polymer blends
Assignee: Advanced Elastomer Systems LP
•
Filing: 1990-08-21
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Granted: 1991-04-30
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Expires: 2010-08-21
Abstract
Abstract The present invention relates to compositions comprising at least one elastomer and at least one plastic. 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
2026-11-03 05:00
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0853; C08F; C08F10/00; C08F10/02; C08F210/00; C08F210/16; C08F210/18; C08F297/00; C08F297/06; C08L101/00; C08L23/10; C08L23/12; C08L23/16; C08L53/00; C08L77/00; C08F110/00; C08F110/02; C08K; C08K3/00; C08K3/34; C08K3/346; C08L2205/00; C08L2205/03; C08L2205/08; C08L23/06; C08L91/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 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 having 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 5 wt. % of the chain, differ in composition from one another by at least about 5 wt. % ethylene; (b) a first plastic composition different from said first plastic composition; and (c) a second plastic composition.
Claim 2
Dependent Claim
104 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 having 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 5 wt. % of the chain, differ in composition from one another by at least about 5 wt. % ethylene; (b) a first plastic composition different from said first plastic composition; and (c) a second plastic composition.
Claim 3
Dependent Claim
21 words
The composition as defined by claim 1 wherein said first plastic composition is polypropylene, and said second plastic composition is polyethylene.
Claim 4
Dependent Claim
42 words
The composition as defined by claim 1 comprising: (a) a continuous phase comprising said first plastic composition; and (b) a discontinuous phase comprising said second plastic composition and said at least one copolymer, said discontinuous phase being dispersed within said continuous phase.
Claim 5
Dependent Claim
21 words
The composition as defined by claim 3 wherein said first plastic composition is polypropylene and said second plastic composition is polyethylene.
Claim 6
Dependent Claim
37 words
The composition as defined by claim 3 wherein said discontinuous phase comprises particles, substantially each of said particles comprising an inner region of said second plastic composition and an outer region of said at least one copolymer.
Claim 7
Dependent Claim
41 words
The composition as defined by claim 1 wherein said first plastic composition is polypropylene said second plastic composition is polyethylene, and said at least one copolymer is at least one member selected from the group consisting ethylene-propylene copolymer and ethylene-propylene terpolymer.
Claim 8
Dependent Claim
50 words
The composition as defined by claim 6 wherein said polypropylene comprises at least approximately 85 wt. % of the blend, said polyethylene comprises approximately 5 wt. % or less by weight of the blend, and said at least one copolymer comprises approximately 10 wt. % or less of the blend.
Claim 9
Dependent Claim
18 words
The composition as defined by claim 1, wherein said at least one copolymer is an ethylene propylene terpolymer.
Claim 10
Dependent Claim
36 words
The composition as defined by claim 8 wherein said ethylene propylene terpolymer comprises ethylene propylene and a non-conjugated diene selected from a group consisting of ethylidene norbornene, 1,4-hexadiene, dicyclopentadiene, vinyl norbornene, methylene norbornene, and mixtures thereof.
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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) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |