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US4284735A
Expired / Lapsed
US
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Polyphenylene oxide blend with rubber-maleimide-styrene copolymer
Assignee: Lyondell Chemical Technology LP
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Filing: 1980-06-23
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Granted: 1981-08-18
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Expires: 2000-06-23
Abstract
Abstract An advantageous blend suitable for the molding of plastic articles is prepared by mechanically mixing a polyphenylene ether resin and a resin prepared by conducting the polymerization of a mixture of a rubber, maleimide, and styrene.
Inventors
- 👤 Ronald A. Fava
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:10
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
85 words
A thermoplastic molding composition which comprises: A. about (50±15)% polyphenylene oxide. B. about (50±15)% interpolymer of three components (aa) a rubbery block copolymer prepared using a butyl lithium catalyst from 5 to 35% vinyl aromatic compound and from 65 to 95% conjugated alkyldiene, said rubbery block copolymer constituting from 5% to 35% of the interpolymer of three components; (bb) maleimide constituting from 5% to 35% of the interpolymer of three components; and (cc) styrene constituting from 60% to 90% of the interpolymer of three components.
Claim 2
Dependent Claim
85 words
A thermoplastic molding composition which comprises: A. about (50±15)% polyphenylene oxide. B. about (50±15)% interpolymer of three components (aa) a rubbery block copolymer prepared using a butyl lithium catalyst from 5 to 35% vinyl aromatic compound and from 65 to 95% conjugated alkyldiene, said rubbery block copolymer constituting from 5% to 35% of the interpolymer of three components; (bb) maleimide constituting from 5% to 35% of the interpolymer of three components; and (cc) styrene constituting from 60% to 90% of the interpolymer of three components.
Claim 3
Dependent Claim
45 words
The thermoplastic molding composition of claim 1 in which: A. the quantity of polyphenylene oxide is about 50% B. the quantity of interpolymer of three components is about 50%, said interpolymer featuring (aa) about 13% butadiene (bb) about 7% maleimide; and (cc) about 80% styrene.
References Cited (Backward Citations)
US4097550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |