Polyarylene esters containing phosphorus

US4472570A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Siegmund Besecke · Hameln, DE
• Guenter Schroeder · Olching, DE
• Werner Ude · Darmstadt, DE
• Winfried Wunderlich · Roßdorf, DE

Key dates

• Filing date: Jul 22, 1983
• Grant date: Sep 18, 1984
• Expiry date: Jul 22, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/6926
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

What are disclosed are resinous polyarylene esters containing more than 1 percent by weight of phosphorus and having the formula--CO--A--CO--O--B--O.sub.n, wherein B is a bivalent aromatic group and A represents at least in part EQU --phenylene--P(O).sub.x (R)--phenylene--, wherein R is lower alkyl or aryl and x is 0 or 1, the rest, if any, of A having the formula given for B, which esters have decomposition temperatures of at least 450.degree. C. and can be sintered or thermoplastically processed into sheets or other shapes having good self-extinguishing properties.