US4483953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyphenylene ether resins and compositions heat stabilized with trineopentylene diphosphite
Assignee: General Electric Co
•
Filing: 1983-09-12
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Granted: 1984-11-20
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Expires: 2003-09-12
Abstract
Abstract Polyphenylene ether resins and resin compositions in admixture with trineopentylene diphosphite as a thermal oxidative stabilizer are described. These can be used with or without an impact modifier for the polyphenylene ether resin. An additional benefit is that the resins and compositions exhibit a higher heat distortion temperature.
Inventors
- 👤 Robert J. Axelrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
28 words
A thermoplastic composition which comprises an intimate admixture of a polyphenylene ether resin with trineopentylene diphosphite in an amount effective to provide thermal oxidative stability for the resin.
Claim 2
Dependent Claim
28 words
A thermoplastic composition which comprises an intimate admixture of a polyphenylene ether resin with trineopentylene diphosphite in an amount effective to provide thermal oxidative stability for the resin.
Claim 3
Dependent Claim
31 words
A composition according to claim 1, wherein the trineopentylene diphosphite is present in an amount of between about 0.1 and 2.0 parts by weight based on the total amount of resin.
Claim 4
Dependent Claim
13 words
A composition according to claim 1, which additionally contains an alkenyl aromatic resin.
Claim 5
Dependent Claim
16 words
A composition according to claim 3, in which the alkenyl aromatic resin is a styrene resin.
Claim 6
Dependent Claim
26 words
A composition according to claim 4, in which the ratio of polyphenylene ether and styrene resin is from 4:1 and 1:2 respectively, on a weight basis.
Claim 7
Dependent Claim
14 words
A composition according to claim 4, in which the polyphenylene ether is poly(2,6-dimethyl-1,4-phenylene ether).
Claim 8
Dependent Claim
18 words
A composition according to claim 4, in which the styrene resin is a rubber modified high impact polystyrene.
Claim 9
Dependent Claim
24 words
A composition according to claim 1, which also contains one or more additives selected from among flame retardants, plasticizers, fillers, reinforcements, and coloring agents.
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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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |