Patent US4299931A successfully refreshed from Google Patents.
US4299931A
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US
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Compatibilized polymer blends
Assignee: Advanced Elastomer Systems LP
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Filing: 1980-03-10
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Granted: 1981-11-10
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Expires: 2000-03-10
Abstract
Abstract Compatibilized polymer blends are described comprising a blend of olefin polymer, nitrile rubber, and a compatibilizing amount of block copolymer comprising nitrile rubber compatibilizing segments and olefin polymer compatibilizing segments.
Inventors
- 👤 Aubert Y. Coran
- 👤 Raman Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:50
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08G; C08G81/00; C08G81/02; C08G81/021; C08L51/00; C08L51/006; C08L51/06; C08L53/00; C08L53/005; C08L9/00; C08L9/02
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
47 words
A compatibilized polymer composition comprising a blend of thermoplastic olefin polymer, nitrile rubber having an average molecular weight of 50,000 or more, and, in a compatibilization enhancing amount, a block copolymer comprising at least one nitrile rubber compatibilizing segment and at least one olefin polymer compatibilizing segment.
Claim 2
Dependent Claim
47 words
A compatibilized polymer composition comprising a blend of thermoplastic olefin polymer, nitrile rubber having an average molecular weight of 50,000 or more, and, in a compatibilization enhancing amount, a block copolymer comprising at least one nitrile rubber compatibilizing segment and at least one olefin polymer compatibilizing segment.
Claim 3
Dependent Claim
24 words
The composition of claim 1 in which the block copolymer is derived from an olefin polymer containing one or more graft forming functional groups.
Claim 4
Dependent Claim
24 words
The composition of claim 2 in which the block copolymer is derived from a nitrile rubber containing one or more graft forming functional groups.
Claim 5
Dependent Claim
17 words
The composition of claim 3 in which the olefin polymer and nitrile rubber functional groups are different.
Claim 6
Dependent Claim
27 words
The composition of claim 4 in which the block copolymer is prepared from a liquid nitrile rubber having an average molecular weight of about 500 to 50,000.
Claim 7
Dependent Claim
34 words
The composition of claim 5 comprising about 1-99 parts by weight of olefin polymer and correspondingly about 99-1 parts by weight of nitrile rubber, and about 0.5 to 25 weight percent of block copolymer.
Claim 8
Dependent Claim
30 words
The composition of claim 2 in which graft forming functional groups are selected from the group consisting of carboxy, halo, amino, and a functional group derived from methylol phenolic material.
Claim 9
Dependent Claim
30 words
The composition of claim 6 in which the graft forming functional group is selected from the group consisting of carboxy, halo, amino, and a group derived from methylol phenolic material.
Claim 10
Dependent Claim
30 words
The composition of claim 8 in which the block copolymer is prepared from olefin polymer and nitrile rubber, each of which contain functional groups which react to form block copolymer.
Claim 11
Dependent Claim
14 words
The composition of claim 9 in which the olefin polymer is thermoplastic crystalline polypropylene.
Claim 12
Dependent Claim
26 words
The composition of claim 10 in which the block copolymer is prepared from olefin polymer containing a graft forming functional group derived from methylol phenolic material.
Claim 13
Dependent Claim
25 words
The composition of claim 10 in which the block copolymer is prepared from olefin polymer containing a graft forming functional group derived from unsaturated acid.
Claim 14
Dependent Claim
27 words
The composition of claim 12 in which the block copolymer is prepared from olefin polymer containing a graft forming functional group derived from maleic acid or anhydride.
Claim 15
Dependent Claim
18 words
The composition of claim 11 in which the block copolymer is prepared from nitrile rubber containing amino groups.
Claim 16
Dependent Claim
18 words
The composition of claim 13 in which the block copolymer is prepared from nitrile rubber containing amino groups.
Claim 17
Dependent Claim
11 words
The composition of claim 10 in which the rubber is cured.
Claim 18
Dependent Claim
37 words
The composition of claim 16 in which the blend comprises about 25-65 parts by weight of polypropylene, and about 75-35 parts by weight of cured nitrile rubber in the form of small particles dispersed throughout the polypropylene.
Claim 19
Dependent Claim
14 words
The composition of claim 5 in which the block copolymer is prepared in situ.
Claim 20
Dependent Claim
14 words
The composition of claim 11 in which the block copolymer is prepared in situ.
Claim 21
Dependent Claim
14 words
The composition of claim 12 in which the block copolymer is prepared in situ.
Claim 22
Dependent Claim
32 words
A block copolymer comprising at least one segment each of nitrile rubber and an olefin polymer, said copolymer being derived from an olefin polymer containing one or more graft forming functional groups.
Claim 23
Dependent Claim
32 words
A block copolymer comprising at least one segment each of nitrile rubber and an olefin polymer, said copolymer being derived from an olefin polymer containing one or more graft forming functional groups.
Claim 24
Dependent Claim
18 words
The copolymer of claim 21 derived from a nitrile rubber containing one or more graft forming functional groups.
Claim 25
Dependent Claim
17 words
The copolymer of claim 22 in which the olefin polymer and nitrile rubber functional groups are different.
Claim 26
Dependent Claim
28 words
The copolymer of claim 21 in which the functional groups are selected from the group consisting of carboxy, halo, amino, and a group derived from methylol phenolic material.
Claim 27
Dependent Claim
24 words
The copolymer of claim 24 in which the nitrile rubber is a liquid rubber having an average molecular weight of about 500 to 50,000.
Claim 28
Dependent Claim
14 words
The copolymer of claim 25 in which the olefin polymer is polypropylene or polyethylene.
Claim 29
Dependent Claim
13 words
The copolymer of claim 26 in which the olefin polymer is crystalline polypropylene.
Claim 30
Dependent Claim
13 words
The copolymer of claim 27 in which the nitrile rubber contains amino groups.
Claim 31
Dependent Claim
18 words
The copolymer of claim 28 in which the olefin polymer contains functional groups derived from methylol phenolic material.
Claim 32
Dependent Claim
19 words
The copolymer of claim 28 in which the olefin polymer contains functional groups derived from unsaturated acid or anhydride.
Claim 33
Dependent Claim
13 words
The copolymer of claim 30 in which the acid or anhydride is maleic.
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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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |