US4755566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trialkylamine salt-functionalized polyphenylene ethers, methods for their preparation, and compositions containing them
Assignee: General Electric Co
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Filing: 1986-06-26
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Granted: 1988-07-05
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Expires: 2006-06-26
Abstract
Abstract Functionalized polyphenylene ethers are prepared by mixing with various trialkylammonium maleates or fumarates in the melt, in the absence of free radical initiators. They are useful in the preparation of resinous compositions comprising polyphenylene ethers and polyamides or polyesters. Such resinous compositions preferably also contain impact modifiers.
Inventors
- 👤 John B. Yates, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:09
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08L67/00; C08L71/02; C08L75/00; C08L77/00; C08L81/00; C08L81/04; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
31 words
A method for functionalizing a polyphenylene ether which comprises mixing said polyphenylene ether in the melt with at least one functionalizing compound comprising a trialkylamine salt of maleic or fumaric acid.
Claim 2
Independent Claim
31 words
A method for functionalizing a polyphenylene ether which comprises mixing said polyphenylene ether in the melt with at least one functionalizing compound comprising a trialkylamine salt of maleic or fumaric acid.
Claim 3
Dependent Claim
91 words
A method according to claim 1 which is effected in the absence of free radical initiators, and wherein the polyphenylene ether comprises a plurality of structural units having the formula ##STR6## and in each of said units independently, each Q 1 is independently halogen, primary or secondary lower alkyl, phenyl, haloalkyl, aminoalkyl, hydrocarbonoxy, or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and each Q 2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbonoxy or halohydrocarbonoxy as defined for Q 1 .
Claim 4
Dependent Claim
11 words
A functionalized polyphenylene ether prepared by the method of claim 2.
References Cited (Backward Citations)
US4315086A
Cited
US4536567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |