US4894402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyphenylene compositions having improved melt behavior and impact
Assignee: General Electric Co
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Filing: 1987-04-30
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Granted: 1990-01-16
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Expires: 2007-04-30
Abstract
Abstract Impact-improved polyphenylene ether resin compositions which also exhibit improved melt behavior without degradation of other themal properties are provided by combining a polyphenylene ether polymer, an alkyl or aralkyl sulfonate of an alkali metal, where the alkyl or aralkyl radical has 5 to 25 carbon atoms, and an acrylate-styrene-acrylonitrile terpolymer.
Inventors
- 👤 Visvaldis Abolins
- 👤 Joseph C. Golba, Jr.
- 👤 Thomas A. Morelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:30
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
A thermoplastic composition having improved impact strength and melt behavior consisting essentially of: (a) a polyphenylene ether resin having an intrinsic viscosity less than approximately, 0.42 dl/g as measured in chloroform at 25° C.; (b) a compound of the formula R-SO 3 X wherein R represents an alkyl or aralkyl radical having 5 to 25 carbon atoms and X represents an alkali metal ion, in an amount effective for improving the melt behavior of said polyphenylene ether resin; and (c) an impact strength improving amount of an acrylate-styrene-acrylonitrile terpolymer.
Claim 2
Dependent Claim
89 words
A thermoplastic composition having improved impact strength and melt behavior consisting essentially of: (a) a polyphenylene ether resin having an intrinsic viscosity less than approximately, 0.42 dl/g as measured in chloroform at 25° C.; (b) a compound of the formula R-SO 3 X wherein R represents an alkyl or aralkyl radical having 5 to 25 carbon atoms and X represents an alkali metal ion, in an amount effective for improving the melt behavior of said polyphenylene ether resin; and (c) an impact strength improving amount of an acrylate-styrene-acrylonitrile terpolymer.
Claim 3
Dependent Claim
35 words
A composition as in claim 1 wherein the compound of formula R-SO 3 X is present in an amount of, approximately, 0.5 to 5.0 parts by weight per 100 parts of the polyphenylene ether resin.
Claim 4
Dependent Claim
26 words
A composition as in claim 1 wherein the acrylate-styrene-acrylonitrile terpolymer is present in an amount of, approximately, 1 to 20 parts of the polyphenylene ether resin.
Claim 5
Dependent Claim
40 words
A composition as in claim 1 wherein the acrylate-styrene-acrylonitrile terpolymer is comprised of, approximately, 5 to 50 weight percent of at least one crosslinked acrylate, 5 to 35 weight percent crosslinked styrene-acrylonitrile, and 15 to 90 weight percent uncrosslinked styrene-acrylonitrile.
Claim 6
Dependent Claim
34 words
A composition as in claim 1 wherein the compound of formula R--SO 3 X is a mixture of compounds having said formula and R represents alkyl radicals independently having 12 to 20 carbon atoms.
Claim 7
Dependent Claim
18 words
A composition as in claim 1 wherein in the formula R--SO 3 X, X represents a sodium ion.
Claim 8
Dependent Claim
16 words
A composition as in claim 1 wherein the polyphenylene ether is a homopolymer or a copolymer.
Claim 9
Dependent Claim
12 words
A composition as in claim 7 wherein the polyphenylene ether is poly(2,6-dimethyl-1,4-phenylene)ether.
Claim 10
Dependent Claim
20 words
A composition as in claim 1 wherein the polyphenylene ether has an intrinsic viscosity of approximately, 0.38 to 0.42 dl/g.
Claim 11
Dependent Claim
11 words
A molded article comprised of the thermoplastic composition of claim 1.
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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) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |