Substituted aromatic polyesters

US4835244A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Walter Heitz · Kirchhain, DE
• Wilhelm Brugging · Recklinghausen, DE

Key dates

• Filing date: May 31, 1988
• Grant date: May 30, 1989
• Expiry date: May 31, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/6826
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to polyesters corresponding to formula (I) ##STR1## wherein R.sup.1 and R.sup.2 stand for --CH.sub.2 --CH.sub.2 --Ar wherein Ar denotes an aromatic group or one of these two groups is --CH.sub.2 --CH.sub.2 --Ar while the other is an alkyl group, a substituted alkyl or an aryl group or halogen and PA1 n represents an integer with a value from 5 to 2000, and to a process for their preparation.