Phenylene ether copolymer aromatic polycarbonate blends

• US 4,485,219 A
• Filed: 12/01/1983
• Issued: 11/27/1984
• Est. Priority Date: 12/01/1983
• Status: Expired due to Fees

• Current Assignee: Borg-Warner Chemicals Incorporated International Center Parkersburg West Virginia 26102, Regents of the University of California (University of California)
• Original Assignee: Borg-Warner Chemicals, Inc. (BorgWarner Incorporated)
• Inventors: Falk, John C., Khait, Klementina F.
• Primary Examiner(s): Pertilla, Theodore E.
• Application Number:
  US06/556,889
• Time in Patent Office: 362 Days
• Field of Search: 525/394, 525/905, 525/462, 528/196
• US Class Current: 525/394
• CPC Class Codes: C08G 65/44 by oxidation of phenols
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/18 Polyesters or polycarbonates according to C08L67/00 - C08L69/00; Derivatives thereof
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• CPC Class Codes: C08L 71/00 Compositions of polyethers obtained by reactions forming an ether link in the main chain of polyacetals C08L59/00; of epoxy resins C08L63/00; of polythioether-ethers C08L81/02; of polyether-sulfones C08L81/06; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 71/123 not modified by chemical after-treatment
• CPC Class Codes: Y10S 525/905 Polyphenylene oxide

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.

Claims

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. The blend of claim 6 wherein the aromatic carbonate polymer is the carbonate polymer of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane.

8. The blend of claim 6 wherein the aromatic carbonate copolymer is the carbonate polymer of 2,2-bis(4-hydroxyphenyl)propane.