US4772664A
Expired / Lapsed
US
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Thermoplastic resin composition
Assignee: Asahi Kasei Corp
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Filing: 1986-12-23
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Granted: 1988-09-20
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Expires: 2006-12-23
Abstract
Abstract A thermoplastic resin composition substantially constituted of (A) 25 to 70% by weight of a polyamide, (B) 25 to 70% by weight of a polyphenylene ether and (C) 2 to 25% by weight of a block copolymer having at least one polymer block mainly comprised of a vinyl aromatic compound and at least one polymer block mainly comprised of a conjugated diene compound having the content of the vinyl aromatic compound in the range of 25 to 85% by weight; wherein the polyamide forms a continuous phase, and, in the continuous phase, the polyphenylene ether is dispersed to form a dispersed phase having an average particle diameter ranging from 0.5 to 10 mu m, and further, substantially all of the block copolymer is micro-dispersed in the dispersed phase of the polyphenylene ether. The composition is widely used as outerplate materials or wheel caps of automobiles, as electrical or electronical parts, especially the various connectors which are used in automobiles, etc.
Inventors
- 👤 Sumio Ueda
- 👤 Hiroshi Harada
- 👤 Kazuo Yoshida
- 👤 Koji Kasai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:26
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L77/00; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
132 words
A thermoplastic resin composition substantially constituted of components (A) 25 to 70% by weight of a polyamide, (B) 25 to 70% by weight of a polyphenylene ether and (C) 2 to 25% by weight of a block copolymer having at least one polymer block mainly comprised of a vinyl aromatic compound and at least one polymer block mainly comprised of a conjugated diene compound having the content of the vinyl aromatic compound in the range of 25 to 85% by weight; wherein said polyamide forms a continuous phase, and, in said continuous phase, said polyphenylene ether is dispersed to form a dispersed phase having its average particle diameter ranging from 0.5 to 10 μm, and further, substantially all of said block copolymer is micro-dispersed in the dispersed phase of the polyphenylene ether.
Claim 2
Dependent Claim
132 words
A thermoplastic resin composition substantially constituted of components (A) 25 to 70% by weight of a polyamide, (B) 25 to 70% by weight of a polyphenylene ether and (C) 2 to 25% by weight of a block copolymer having at least one polymer block mainly comprised of a vinyl aromatic compound and at least one polymer block mainly comprised of a conjugated diene compound having the content of the vinyl aromatic compound in the range of 25 to 85% by weight; wherein said polyamide forms a continuous phase, and, in said continuous phase, said polyphenylene ether is dispersed to form a dispersed phase having its average particle diameter ranging from 0.5 to 10 μm, and further, substantially all of said block copolymer is micro-dispersed in the dispersed phase of the polyphenylene ether.
Claim 3
Dependent Claim
30 words
The composition according to claim 1, wherein component (C) is a block copolymer having the content of the vinyl aromatic compound in the range of 30 to 70% by weight.
Claim 4
Dependent Claim
30 words
The composition according to claim 1, wherein component (C) is a block copolymer having the content of the vinyl aromatic compound in the range of 35 to 60% by weight.
Claim 5
Dependent Claim
31 words
The composition according to claim 1, wherein component (C) is a block copolymer comprising styrene and butadiene and having the styrene content in the range of 35 to 60% by weight.
Claim 6
Dependent Claim
28 words
The composition according to claim 1, wherein component (A) is a polyamide selected from the group consisting of nylon 6, nylon 6,6 a nylon 6-,6,6-copolymer and mixtures thereof.
Claim 7
Dependent Claim
85 words
The composition according to claim 1, wherein component (B) is a polyphenylene ether comprising a structure unit of formula (I) shown below: ##STR4## wherein R 1 and R 2 may be the same or different and each represents a monovalent radical selected from the group consisting of an alkyl group having 1 to 4 carbon atoms excluding tert-butyl group, an aryl group, a halogen atom and a hydrogen atom, and R 1 and R 2 are each not a hydrogen atom at the same time.
Claim 8
Dependent Claim
12 words
The composition according to claim 1, wherein component (B) is poly(2,6-dimethyl-1,4-phenylene) ether.
Claim 9
Dependent Claim
107 words
The composition according to claim 1, wherein component (B) is a copolymer comprising structure units of formulae (I) and (II) shown below: ##STR5## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 may be the same or different and each represents a monovalent radical selected from the group consisting of an alkyl group having 1 to 4 carbon atoms excluding tert-butyl group, an aryl group, a halogen atom and a hydrogen atom; provided that R 1 and R 2 , as well as R 3 and R 4 , are each not a hydrogen at the same time.
Claim 10
Dependent Claim
33 words
The composition according to claim 4, wherein component (A) is at least one selected from the group consisting of nylon 6, nylon 6,6 and a nylon 6-6,6-copolymer and component (B) is poly(2,6-dimethyl-1,4-phenylene) ether.
Claim 11
Dependent Claim
34 words
The composition according to any one of claims 1 to 9, wherein the dispersed phase formed by dispersing polyphenylene ether in the continuous phase has an average particle diameter of 0.8 to 7 μm.
Claim 12
Dependent Claim
90 words
The composition according to claim 1, wherein component (B) is a polyphenylene ether comprising a structure unit of formula (II) shown below: ##STR6## wherein R 3 , R 4 , R 5 and R 6 may be the same or different and each represents a monovalent radical selected from the group consisting of an alkyl having 1 to 4 carbon atoms excluding tert-butyl group, an aryl group, a halogen atom and a hydrogen atom; provided that R 3 and R 4 are each not hydrogen atom at the same time.
Claim 13
Dependent Claim
43 words
The composition according to claim 1, wherein component (B) is a polyphenylene ether homopolymer selected from the group consisting of poly(2,6-dimethyl-1,4-phenylene) ether, poly(2-methyl-6-ethyl-1,4-phenylene) ether, poly-(2,6-diethyl-1,4-phenylene) ether, poly(2-ethyl-6-n-propyl-1,4-phenylene) ether, poly(2,6-di-n-propyl-1,4-phenylene) ether, poly(2-methyl-6-n-butyl-1,4-phenylene) ether, poly(2-ethyl-6-isopropyl-1,4-phenylene) ether, poly(2-methyl-6-chloro-1,4-phenylene) ether, poly(2-methyl-6-hydroxyethyl-1,4-phenylene) ether, poly(2-methyl-6-chloroethyl-1,4-phenylene) ether and mixtures thereof.
Claim 14
Dependent Claim
28 words
The composition according to claim 1, wherein component (A) is a polyamide having a ##STR7## group in the main chain and is capable of being melted when heated.
Claim 15
Dependent Claim
60 words
The composition according to claim 1, wherein component (A) is a polyamide selected from the group consisting of nylon 4, nylon 6, nylon 6,6, nylon 12, nylon 6,10, a polyamide from terephthalic acid and trimethylhexamethylenediamine, a polyamide from adipic acid and methaxylilenediamine, a polyamide from adipic acid, azelaic acid and 2,2-bis(p-aminocyclohexyl)-propane, a polyamide from terephthalic acid, 4,4'-diaminodicyclohexylmethane and mixtures thereof.
Claim 16
Dependent Claim
50 words
The composition according to claim 1, wherein the vinyl aromatic compound of the block copolymer is selected from the group consisting of styrene, α-methylstyrene, vinyltoluene and mixtures thereof and the conjugated diene compound of the block copolymer is selected from the group consisting of butadiene, isoprene, 1,3-pentadiene and mixtures thereof.
Claim 17
Dependent Claim
20 words
The composition according to claim 15, wherein the vinyl aromatic compound is styrene and the conjugated diene compound is butadiene.
Claim 18
Dependent Claim
38 words
The composition according to claim 1, wherein said composition is substantially constituted of 30 to 60% by weight of component (A), 30 to 60% by weight of component (B) and 5 to 20% by weight of component (C).
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) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |