US4485219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenylene ether copolymer aromatic polycarbonate blends
Assignee: CALIFORNIA A CORP OF, University of, Regents of
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Filing: 1983-12-01
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Granted: 1984-11-27
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Expires: 2003-12-01
Abstract
Abstract Blends comprising an aromatic polycarbonate and a phenylene ether copolymer resin exhibiting good toughness and improved high temperature end-use performance as measured by heat distortion temperature.
Inventors
- 👤 John C. Falk
- 👤 Klementina F. Khait
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:31
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44; C08L69/00; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
42 words
In a thermoplastic blend comprising an aromatic carbonate polymer of a dihydric phenol and a polyphenylene ether resin, the improvement wherein the polyphenylene ether is a copolymer of from 98 to 80 wt% 2,6-dialkyl phenol and from 2 to 20 wt% 2,3,6-trialkylphenol.
Claim 2
Dependent Claim
42 words
In a thermoplastic blend comprising an aromatic carbonate polymer of a dihydric phenol and a polyphenylene ether resin, the improvement wherein the polyphenylene ether is a copolymer of from 98 to 80 wt% 2,6-dialkyl phenol and from 2 to 20 wt% 2,3,6-trialkylphenol.
Claim 3
Dependent Claim
31 words
The thermoplastic blend of claim 1 wherein the aromatic carbonate polymer is selected from the group consisting of a carbonate polymer of 2,2-bis(4-hydroxyphenyl)propane, a carbonate polymer of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, and mixtures thereof.
Claim 4
Dependent Claim
61 words
A thermoplastic blend comprising from 5 to 95 wt% of an aromatic carbonate polymer selected from the group consisting of the carbonate polymer of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, the carbonate polymer of 2,2-bis(4-hydroxyphenyl)propane and mixtures thereof, and correspondingly, from 95 to 5 wt% of a polyphenylene ether copolymer of from 98 to 80 wt% 2,6-dimethyl phenol and from 2 to 20 wt% 2,3,6-trimethyl phenol.
Claim 5
Dependent Claim
61 words
A thermoplastic blend comprising from 5 to 95 wt% of an aromatic carbonate polymer selected from the group consisting of the carbonate polymer of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, the carbonate polymer of 2,2-bis(4-hydroxyphenyl)propane and mixtures thereof, and correspondingly, from 95 to 5 wt% of a polyphenylene ether copolymer of from 98 to 80 wt% 2,6-dimethyl phenol and from 2 to 20 wt% 2,3,6-trimethyl phenol.
Claim 6
Dependent Claim
27 words
The blend of claim 3 comprising from 5 to 40 wt% of said carbonate polymer and correspondingly from 95 to 60 wt% of said polyphenylene ether copolymer.
Claim 7
Dependent Claim
24 words
The blend of claim 3 wherein said polyphenylene ether copolymer is a copolymer consisting of about 95 wt% 2,6-dimethylphenol and about 5 wt% 2,3,6-trimethylphenol.
Claim 8
Dependent Claim
55 words
A thermoplastic blend comprising from 5 to 40 wt% of an aromatic carbonate polymer selected from the group consisting of the carbonate polymer of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, the carbonate polymer of 2,2-bis(4-hydroxyphenyl)propane and mixtures thereof, and correspondingly, from 95 to 60 wt% of a polyphenylene ether copolymer of about 95 wt% 2,6-dimethylphenol and about 5 wt% 2,3,6-trimethylphenol.
Claim 9
Dependent Claim
55 words
A thermoplastic blend comprising from 5 to 40 wt% of an aromatic carbonate polymer selected from the group consisting of the carbonate polymer of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, the carbonate polymer of 2,2-bis(4-hydroxyphenyl)propane and mixtures thereof, and correspondingly, from 95 to 60 wt% of a polyphenylene ether copolymer of about 95 wt% 2,6-dimethylphenol and about 5 wt% 2,3,6-trimethylphenol.
Claim 10
Dependent Claim
16 words
The blend of claim 6 wherein the aromatic carbonate polymer is the carbonate polymer of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane.
Claim 11
Dependent Claim
16 words
The blend of claim 6 wherein the aromatic carbonate copolymer is the carbonate polymer of 2,2-bis(4-hydroxyphenyl)propane.
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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) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |