Polyarylene esters containing phosphorus

US4463159A · 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: May 31, 1983
• Grant date: Jul 31, 1984
• Expiry date: May 31, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/5325
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

What are disclosed are phosphorus-containing polyarylene esters, EQU --O--A--O--CO--B--CO].sub.n, wherein A represents at least in part groups of the structure ##STR1## wherein x is 0 or 1 and R is aromatic or aliphatic, and wherein B represents either two different aromatic groups or at least one group with the structure --C.sub.6 H.sub.4 --R'--C.sub.6 H.sub.4 --, wherein R' is a bridging link of the group --O--, --S--, --SO.sub.2 --, --CO--, or isopropylidene, and wherein n is greater than 20, which esters have a phosphorus content of over 1 weight percent, are distinguished by improved thermoplastic processability, and are prepared by condensation of HO--A--OH, for example with ClCO--B--COCl in the presence of a base.