US5326813A
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US
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Thermoplastic resin composition containing a modified polyphenylene ether
Assignee: BIOVALEUR SARL
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Filing: 1992-12-10
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Granted: 1994-07-05
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Expires: 2012-12-10
Abstract
Abstract There are disclosed a thermoplastic resin composition comprising (A) a styrenic polymer having a high degree of syndiotactic configuration, (B) an inorganic filler and (C) a polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, especially maleic anhydride, the ether having a modification rate of 1.3% or more by weight; a thermoplastic resin composition further comprising (D) a rubbery elastomer in addition to the above components (A), (B) and (C); a process for producing modified polyphenylene ether (PPO) comprising reacting 100 parts by weight of PPO with 1 to 20 parts by weight of the above compound or a derivative thereof in an aromatic hydrocarbon solvent in the presence of 15 or less parts by weight of a radical generator; and a process for producing the modified PPO comprising reacting 100 parts by weight of PPO with 1 to 5 parts by weight of the above compound or a derivative thereof at 300 DEG to 350 DEG C. in the presence of 0.1 to 3 parts by weight of a radical generator which exhibits a half-life period of 1 minute at 300 DEG C. or higher. The above thermoplastic resin composition is markedly improved in its dynamical properties especially rigidity and heat resistance.
Inventors
- 👤 Akihiko Okada
- 👤 Akitoshi Masuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:49
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08F; C08F283/00; C08F283/06; C08F283/08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L77/00; C08L21/00; C08L51/00; C08L51/08; 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: 12
Claim 1
Independent Claim
76 words
A thermoplastic resin composition which comprises (A) 100 parts by weight of a styrenic polymer having a high degree of syndiotactic configuration, (B) 1 to 350 parts by weight of an inorganic filler and (C) 0.1 to 3.5 parts by weight of a polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, said ether having a modification rate of 1.3% to 10% by weight.
Claim 2
Dependent Claim
76 words
A thermoplastic resin composition which comprises (A) 100 parts by weight of a styrenic polymer having a high degree of syndiotactic configuration, (B) 1 to 350 parts by weight of an inorganic filler and (C) 0.1 to 3.5 parts by weight of a polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, said ether having a modification rate of 1.3% to 10% by weight.
Claim 3
Dependent Claim
87 words
A thermoplastic resin composition which comprises (A) 100 parts by weight of a styrenic polymer having a high degree of syndiotactic configuration, (B) 1 to 350 parts by weight of an inorganic filler, (D) 5 to 100 parts by weight of a rubbery elastomer and (C) 0.1 to 3.5 parts by weight of a polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, said ether having a modification rate of 1.3% to 10% by weight.
Claim 4
Dependent Claim
87 words
A thermoplastic resin composition which comprises (A) 100 parts by weight of a styrenic polymer having a high degree of syndiotactic configuration, (B) 1 to 350 parts by weight of an inorganic filler, (D) 5 to 100 parts by weight of a rubbery elastomer and (C) 0.1 to 3.5 parts by weight of a polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, said ether having a modification rate of 1.3% to 10% by weight.
Claim 5
Dependent Claim
15 words
The composition according to claim 1 wherein the inorganic filler is a surface-treated inorganic filler.
Claim 6
Dependent Claim
15 words
The composition according to claim 2 wherein the inorganic filler is a surface-treated inorganic filler.
Claim 7
Dependent Claim
17 words
The composition according to claim 1 wherein said compound is selected from maleic anhydride and glycidyl methacrylate.
Claim 8
Dependent Claim
17 words
The composition according to claim 2 wherein said compound is selected from maleic anhydride and glycidyl methacrylate.
Claim 9
Dependent Claim
135 words
The composition according to claim 1 which comprises the polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, said ether having a modification rate of 1.3% to 10% by weight and being produced by a process which comprises reacting 100 parts by weight of a polyphenylene ether consisting of the repeating units each represented by the general formula (I) ##STR2## wherein R 1 and R 2 are each an alkyl group having 1 to 4 carbon atoms or a halogen atom, with 1 to 20 parts by weight of the compound having an ethylenic double bond and a polar group in the same molecule in an aromatic hydrocarbon solvent in the presence of 15 or less parts by weight of a radical generator.
Claim 10
Dependent Claim
152 words
The composition according to claim 1 which comprises the polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, said ether having a modification rate of 1.3% to 10% by weight and being produced by a process which comprises reacting 100 parts by weight of a polyphenylene ether consisting of the repeating units each represented by the general formula (I) ##STR3## wherein R 1 and R 2 are each an alkyl group having 1 to 4 carbon atoms or a halogen atom, with 1 to 5 parts by weight of the compound having an ethylenic double bond and a polar group in the same molecule at a temperature of 300° to 350° C. in the presence of 0.1 to 3 parts by weight of a radical generator which exhibits a half-life period of one (1) minute at 300° C. or higher.
Claim 11
Dependent Claim
135 words
The composition according to claim 2 which comprises the polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, said ether having a modification rate of 1.3% to 10% by weight and being produced by a process which comprises reacting 100 parts by weight of a polyphenylene ether consisting of the repeating units each represented by the general formula (I) ##STR4## wherein R 1 and R 2 are each an alkyl group having 1 to 4 carbon atoms or a halogen atom, with 1 to 20 parts by weight of the compound having an ethylenic double bond and a polar group in the same molecule in an aromatic hydrocarbon solvent in the presence of 15 or less parts by weight of a radical generator.
Claim 12
Dependent Claim
152 words
The composition according to claim 2 which comprises the polyphenylene ether that is modified with a compound having an ethylenic double bond and a polar group in the same molecule, said ether having a modification rate of 1.3% to 10% by weight and being produced by a process which comprises reacting 100 parts by weight of a polyphenylene ether consisting of the repeating units each represented by the general formula (I) ##STR5## wherein R 1 and R 2 are each an alkyl group having 1 to 4 carbon atoms or a halogen atom, with 1 to 5 parts by weight of the compound having an ethylenic double bond and a polar group in the same molecule at a temperature of 300° to 350° C. in the presence of 0.1 to 3 parts by weight of a radical generator which exhibits a half-life period of one (1) minute at 300° C. or higher.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-07-04 | 1998-01-03 | 1998-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-04 | 2002-01-03 | 2002-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-04 | 2006-01-03 | 2006-07-05 | $7700.00 | Window Closed / Lapsed |