US4681906A
Expired / Lapsed
US
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Polyphenylene compositions containing sulfonate having improved melt behavior
Assignee: General Electric Co
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Filing: 1985-11-01
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Granted: 1987-07-21
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Expires: 2005-11-01
Abstract
Abstract Polyphenylene ether resin compositions exhibiting improved melt behavior without degradation of other thermal properties are provided by combining a polyphenylene ether polymer and an alkyl or aralkyl sulfonate of an alkali metal, where the alkyl or aralkyl radical has 5 to 25 carbon atoms.
Inventors
- 👤 Visvaldis Abolins
- 👤 Thomas A. Morelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:41
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A thermoplastic composition having improved 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.; and (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.
Claim 2
Dependent Claim
76 words
A thermoplastic composition having improved 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.; and (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.
Claim 3
Dependent Claim
33 words
A composition as in claim 1 wherein said compound of formula R--SO 3 X is present in an amount of, approximately, 0.5 to 5.0 parts per 100 parts of the polyphenylene ether resin.
Claim 4
Dependent Claim
34 words
A composition as in claim 1 wherein said 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 5
Dependent Claim
18 words
A composition as in claim 1 wherein in the formula R--SO 3 X, X represents a sodium ion.
Claim 6
Dependent Claim
16 words
A composition as in claim 1 wherein said polyphenylene ether is a homopolymer or a copolymer.
Claim 7
Dependent Claim
12 words
A composition as in claim 5 wherein said polyphenylene ether is poly(2,6-dimethyl-1,4-phenylene)ether.
Claim 8
Dependent Claim
20 words
A compsition as ni claim 1 wherein said polyphenylene ether has an intrinsic viscosity of approximately, 0.38 to 0.42 dl/g.
Claim 9
Dependent Claim
11 words
A molded article comprised of the thermoplastic composition of claim 1.
References Cited (Backward Citations)
US4529761A
Cited
US4551494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |