US4732938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polyamide--polyphenylene ether compositions
Assignee: GE Chemicals Inc
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Filing: 1985-12-06
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Granted: 1988-03-22
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Expires: 2005-12-06
Abstract
Abstract Compositions comprising a carboxylated PPE resin and a polyamide having good compatibility and impact properties. The carboxylated PPE resin/polyamide alloys are produced by a process wherein a mixture consisting essentially of the PPE resin and a minor amount of an unsaturated carboxylic compound are first melt processed, then compounded with the polyamide.
Inventors
- 👤 Thomas S. Grant
- 👤 Ronald L. Jalbert
- 👤 David Whalen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08F; C08F283/00; C08F283/06; C08F283/08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L77/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
59 words
A composition comprising from 25 to 95 wt % of a polyamide and, correspondingly, from 75 to 5 wt % of a carboxylated phenylene ether resin, said carboxylated resin being the product of melt-mixing a mixture consisting essentially of 100 parts by weight phenylene ether resin and from 0.05 to 1.0 pbw of an ethylenically unsaturated carboxylic acid compound.
Claim 2
Dependent Claim
59 words
A composition comprising from 25 to 95 wt % of a polyamide and, correspondingly, from 75 to 5 wt % of a carboxylated phenylene ether resin, said carboxylated resin being the product of melt-mixing a mixture consisting essentially of 100 parts by weight phenylene ether resin and from 0.05 to 1.0 pbw of an ethylenically unsaturated carboxylic acid compound.
Claim 3
Dependent Claim
23 words
The composition of claim 1 where the ethylenically unsaturated carboxylated compound is selected from the group consisting of carboxylic anhydrides and carboxylic acids.
Claim 4
Dependent Claim
12 words
The composition of claim 1 wherein said carboxylic compound is maleic anhydride.
Claim 5
Dependent Claim
12 words
The composition of claim 1 wherein said carboxylic compound is itaconic acid.
Claim 6
Dependent Claim
65 words
An improved process for preparing blends of polyamides and phenylene ether resins comprising the steps of a. melt-mixing a mixture consisting essentially of 100 parts by weight of phenylene ether resin and from 0.05 to 1.0 pbw of an ethylenically unsaturated carboxylic compound to provide a carboxylated phenylene ether resin; and b. further melt processing said carboxylated phenylene ether resin in the presence of polyamide.
Claim 7
Dependent Claim
65 words
An improved process for preparing blends of polyamides and phenylene ether resins comprising the steps of a. melt-mixing a mixture consisting essentially of 100 parts by weight of phenylene ether resin and from 0.05 to 1.0 pbw of an ethylenically unsaturated carboxylic compound to provide a carboxylated phenylene ether resin; and b. further melt processing said carboxylated phenylene ether resin in the presence of polyamide.
Claim 8
Dependent Claim
26 words
The process of claim 5 wherein the weight ratio of said carboxylated polyphenylene ether resin to said polyamide lies in the range of 95/5 to 5/95.
Claim 9
Dependent Claim
24 words
The process of claim 5 wherein said ethylenically unsaturated carboxylic compound is selected from the group consisting essentially of carboxylic anhydrides and carboxylic acids.
Claim 10
Dependent Claim
12 words
The process of claim 5 wherein said carboxylic compound is maleic anhydride.
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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) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |