US5219940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Styrene polymer composition
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1991-09-19
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Granted: 1993-06-15
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Expires: 2011-09-19
Abstract
Abstract Disclosed is a styrene polymer composition comprising, in a specified proportion, (A) a styrene polymer having no functional group, and (B) either of polyphenylene ether having a polar group or a mixture of polyphenylene ether having a polar group and a styrene polymer having no functional group; or a styrene polymer composition comprising (C) polyamide, as well as above Components (A) and (B). These polymer compositions are excellent in impact resistance, water resistance, and mechanical properties, and are suitable for various purposes.
Inventors
- 👤 Akikazu Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:30
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L77/00; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
61 words
A styrene polymer composition comprising (A) 99 to 1% by weight of a styrene polymer having a syndiotactic configuration, (B) 0.1 to 50% by weight of either of polyphenylene ether having a polar group or a mixture of polyphenylene ether having a polar group and a styrene polymer having no functional group, and (C) 0.9 to 98.9% by weight of polyamide.
Claim 2
Dependent Claim
61 words
A styrene polymer composition comprising (A) 99 to 1% by weight of a styrene polymer having a syndiotactic configuration, (B) 0.1 to 50% by weight of either of polyphenylene ether having a polar group or a mixture of polyphenylene ether having a polar group and a styrene polymer having no functional group, and (C) 0.9 to 98.9% by weight of polyamide.
Claim 3
Dependent Claim
19 words
A styrene polymer composition according to claim 1, wherein the polar group in Component (B) is an acid derivative.
Claim 4
Dependent Claim
39 words
A styrene polymer composition comprising 100 parts by weight of a styrene polymer composition according to any one of claims 1 or 2, and (D) 1 to 350 parts by weight of a filler surface-treated with a coupling agent.
Claim 5
Dependent Claim
27 words
A styrene polymer composition according to claim 3, wherein the coupling agent used for surface treatment of the filler as Component (D) is a silane coupling agent.
Claim 6
Dependent Claim
92 words
A styrene polymer composition comprising (A') 99 to 1% by weight of a styrene polymer having a syndiotactic configuration, (B') 0.1 to 50% by weight of either of polyphenylene ether having anhydrous maleic acid group or a mixture of polyphenylene ether having maleic acid anhydride group and a styrene polymer having no functional group, (C) 0.9 to 98.9% by weight of polyamide, and (D') a filler surface-treated with aminosilane coupling agent in the proportion of 1 to 350 parts by weight based on the total of above-mentioned Components (A'), (B'), and (C').
Claim 7
Dependent Claim
92 words
A styrene polymer composition comprising (A') 99 to 1% by weight of a styrene polymer having a syndiotactic configuration, (B') 0.1 to 50% by weight of either of polyphenylene ether having anhydrous maleic acid group or a mixture of polyphenylene ether having maleic acid anhydride group and a styrene polymer having no functional group, (C) 0.9 to 98.9% by weight of polyamide, and (D') a filler surface-treated with aminosilane coupling agent in the proportion of 1 to 350 parts by weight based on the total of above-mentioned Components (A'), (B'), and (C').
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |