Patent US4293660A successfully refreshed from Google Patents.
US4293660A
Expired / Lapsed
US
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Polyphenylene ether resin composition
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1980-04-16
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Granted: 1981-10-06
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Expires: 2000-04-16
Abstract
Abstract A resin composition comprising (a) a polyphenylene ether resin or a mixture of it with a polystyrene resin, and (b) a grafted block copolymer of an unsaturated polyolefin and butyl rubber obtained by graft copolymerization in the presence of a bifunctional phenolic compound as a grafting vehicle.
Inventors
- 👤 Akitoshi Sugio
- 👤 Masanobu Masu
- 👤 Masatugu Matunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:37
CPC Classifications
C; C08; C08L; C08L25/00; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L51/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
38 words
A resin composition comprising (a) a polyphenylene ether resin, and (b) a grafted block copolymer of an unsaturated polyolefin and butyl rubber obtained by graft copolymerization in the presence of a bifunctional phenolic compound as a grafting vehicle.
Claim 2
Dependent Claim
38 words
A resin composition comprising (a) a polyphenylene ether resin, and (b) a grafted block copolymer of an unsaturated polyolefin and butyl rubber obtained by graft copolymerization in the presence of a bifunctional phenolic compound as a grafting vehicle.
Claim 3
Dependent Claim
45 words
A resin composition comprising (a) a mixture of a polyphenylene ether resin and a polystyrene resin, and (b) a grafted block copolymer of an unsaturated polyolefin and butyl rubber obtained by graft copolymerization in the presence of a bifunctional phenolic compound as a grafting vehicle.
Claim 4
Dependent Claim
45 words
A resin composition comprising (a) a mixture of a polyphenylene ether resin and a polystyrene resin, and (b) a grafted block copolymer of an unsaturated polyolefin and butyl rubber obtained by graft copolymerization in the presence of a bifunctional phenolic compound as a grafting vehicle.
Claim 5
Dependent Claim
46 words
The resin composition of claim 1 or 2 wherein 40 to 99 parts by weight of the unsaturated polyolefin and 1 to 60 parts by weight of the butyl rubber are used per 100 parts by weight of the unsaturated polyolefin and the butyl rubber combined.
Claim 6
Dependent Claim
55 words
The resin composition of claim 3 wherein said unsaturated polyolefin is a polymer having a number average molecular weight of at least 8,000 derived from at least one monomer selected from the group consisting of ethylene, propylene and butene-1, and has 0.05 to 0.5% by weight of unsaturated bonds on an average per molecular chain.
Claim 7
Dependent Claim
12 words
The resin composition of claim 4 wherein said unsaturated polyolefin is polyethylene.
Claim 8
Dependent Claim
22 words
The resin composition of claim 1 or 2 wherein the proportion of said grafted block copolymer is 1 to 15% by weight.
Claim 9
Dependent Claim
36 words
The resin composition of claim 2 wherein said component (a) is a mixture of 25 to 95 parts by weight of the polyphenylene ether resin and 75 to 5 parts by weight of the polystyrene resin.
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |