US4446272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition having nice color tone and high crack-resistance
Assignee: Asahi Kasei Corp
•
Filing: 1981-09-10
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Granted: 1984-05-01
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Expires: 2001-09-10
Abstract
Abstract A resin composition having nice color tone and high crack-resistance as well as flame-retardancy is obtained by blending (A) 100 weight parts of a resin composition containing a rubber-reinforced vinyl aromatic polymer and polyphenylene ether represented by the following general formula: ##STR1## wherein each of R 1 and R 2 represents a monovalent residue such as the same or different alkyl group having 1-4 carbon atoms, aryl group, halogen and hydrogen, and n represents the polymerization degree or a polyphenylene ether onto which a vinyl aromatic compound is graft-copolymerized, in which the polyphenylene ether content is 5-70 wt. % (based on the weight of the resin part), (B) 1-30 weight parts of a halogenated aromatic compound and (C) 0.5-20 weight parts of a non-crystalline ethylene-propylene copolymer.
Inventors
- 👤 Kunio Fukuda
- 👤 Kichiya Tazaki
- 👤 Akihisa Takano
- 👤 Yuji Kusumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:22
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08K; C08K5/00; C08K5/02; C08K5/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
A resin composition having a nice color tone and high crack-resistance as well as flame-retardancy, consisting essentially of (A) 100 weight parts of a resin consisting of (1) a graft-copolymer in which 20-200 weight parts of a vinyl aromatic compound are graft-copolymerized onto 100 weight parts of polyphenylene ether, represented by the formula ##STR5## wherein each of R 1 and R 2 represents a monovalent residue such as the same or different alkyl group having 1 to 4 carbon atoms, aryl group, halogen and hydrogen, and n represents polymerization degree of about 50 to about 250 and (2) rubber-reinforced vinyl aromatic polymer, said polyphenylene ether content being 5-70 wt. % (based on the weight of the resin part), (B) 1-30 weight parts of a halogenated aromatic compound and (C) 0.5-20 weight parts of a non-crystalline ethylene-propylene copolymer.
Claim 2
Dependent Claim
137 words
A resin composition having a nice color tone and high crack-resistance as well as flame-retardancy, consisting essentially of (A) 100 weight parts of a resin consisting of (1) a graft-copolymer in which 20-200 weight parts of a vinyl aromatic compound are graft-copolymerized onto 100 weight parts of polyphenylene ether, represented by the formula ##STR5## wherein each of R 1 and R 2 represents a monovalent residue such as the same or different alkyl group having 1 to 4 carbon atoms, aryl group, halogen and hydrogen, and n represents polymerization degree of about 50 to about 250 and (2) rubber-reinforced vinyl aromatic polymer, said polyphenylene ether content being 5-70 wt. % (based on the weight of the resin part), (B) 1-30 weight parts of a halogenated aromatic compound and (C) 0.5-20 weight parts of a non-crystalline ethylene-propylene copolymer.
Claim 3
Dependent Claim
18 words
The resin composition according to claim 1 wherein each of R 1 and R 2 is methyl group.
Claim 4
Dependent Claim
17 words
The resin composition according to claim 1 wherein the rubber-reinforced vinyl aromatic polymer is a rubber-reinforced polystyrene.
Claim 5
Dependent Claim
25 words
The resin composition according to claim 1 wherein the rubber for the rubber-reinforced vinyl aromatic polymer is polybutadiene, butadiene-styrene copolymer, natural rubber, or butadiene-acrylonitrile copolymer.
Claim 6
Dependent Claim
12 words
The resin composition according to claim 4 wherein the rubber is polybutadiene.
Claim 7
Dependent Claim
13 words
The resin composition according to claim 4 wherein the rubber is butadiene-styrene copolymer.
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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) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |