US4740558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic resin composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1986-12-11
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Granted: 1988-04-26
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Expires: 2006-12-11
Abstract
Abstract A thermoplastic resin composition containing polyphenylene oxide resin is provided, which is superior in processability and impact resistance as well as heat resistance, chemical resistance and hardness, said thermoplastic resin composition comprising (A) polyphenylene oxide resin or a resin composition containing the same, and (B) ethylene copolymer comprising 50-90% by weight of ethylene, 5-49% by weight of alkyl ester of alpha , beta -unsaturated carboxylic acid and 0.5-10% by weight of maleic anhydride.
Inventors
- 👤 Kentaro Mashita
- 👤 Taichi Nishio
- 👤 Takashi Sanada
- 👤 Jinsho Nambu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:03
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L59/00; C08L61/00; C08L61/04; C08L61/06; C08L63/00; C08L67/00; C08L69/00; C08L77/00; C08L81/00; C08L83/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
39 words
A thermoplastic resin composition comprising: (A) polyphenylene oxide resin, and (B) ethylene copolymer, consisting essentially of 50-90% by weight of ethylene, 5-49% by weight of an alkyl ester of α,β-unsaturated carbosylic acid and 0.5-10% by weight of maleic anhydride.
Claim 2
Dependent Claim
39 words
A thermoplastic resin composition comprising: (A) polyphenylene oxide resin, and (B) ethylene copolymer, consisting essentially of 50-90% by weight of ethylene, 5-49% by weight of an alkyl ester of α,β-unsaturated carbosylic acid and 0.5-10% by weight of maleic anhydride.
Claim 3
Dependent Claim
53 words
A thermoplastic resin composition comprising: (A) polyphenylene oxide resin, (B) ethylene copolymer, consisting essentially of 50-90% by weight of ethylene, 5-49% by weight of an alkyl ester of α,β-unsaturated carboxylic acid and 0.5-10% by weight of maleic anhydride, and (C) an alkenyl aromatic resin or an alkenyl aromatic resin and a rubbery polymer.
Claim 4
Dependent Claim
53 words
A thermoplastic resin composition comprising: (A) polyphenylene oxide resin, (B) ethylene copolymer, consisting essentially of 50-90% by weight of ethylene, 5-49% by weight of an alkyl ester of α,β-unsaturated carboxylic acid and 0.5-10% by weight of maleic anhydride, and (C) an alkenyl aromatic resin or an alkenyl aromatic resin and a rubbery polymer.
Claim 5
Dependent Claim
74 words
A thermoplastic resin composition according to claim 1 or claim 2 wherein (A) polyphenylene oxide resin is that obtained by oxidation polycondensation of one or two or more of phenols of the formula: ##STR5## wherein R 1 , R 2 , R 3 , R 4 or R 5 is any of a hydrogen atom, a halogen atom, a hydrocarbon residue or a substituted hydrocarbon residue and one of them is a hydrogen atom.
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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) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |