Phosphorus-containing polyarlene ether

US4696993A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Werner Ude · Darmstadt, DE
• Joachim Knebel · Zwingenberg, DE
• Guenter Schroeder · Olching, DE

Key dates

• Filing date: Jun 4, 1986
• Grant date: Sep 29, 1987
• Expiry date: Jun 4, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/4006
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method for making resinous phosphorus-containing polyarylene ethers of the structure ##STR1## wherein R taken alone is hydrogen or R R taken together are a covalent single bond, oxygen, sulfur, or a sulfonyl, carbonyl, methylene or isopropylidene bridge; PA0 R' is alkyl or aryl; PA0 R" is a single bond, oxygen, sulfur, or an organic group having from 5 to 15 carbon atoms whose free valences emanate from quaternary carbon atoms; PA0 E is an end group which is chlorine, hydrogen, alkyl, aryl, or acyl; and PA0 n has an average value of at least 10, by polycondensing appropriate bis(chlorophenyl)phosphine oxides with appropriate bisphenols at an elevated temperature in the presence of alkali in reaction times of at least 10 hours, and certain resinous ethers produced by this method.