Aromatic polyester carbonates, process for their preparation and their use in the preparation of mouldings, films and coatings

Abstract

Abstract 1. Thermoplastic aromatic polyester carbonates based on diphenols, terephthalic and/or isophthalic acid, phosgene, chain terminators and optionally branching agents, having an ester group content of 99.95 to 5 mol %, based on the sum of ester and carbonate groups, characterized in that the chain terminators are compounds of the formula see diagramm : EP0036080,P8,F1 wherein X represents OH, OCOCl or COCl and R represents a branched alkyl radical with 8 to 9 C atoms, with the proviso that in the alkyl radical R the proportion of methyl-hydrogen atoms, based on all the hydrogen atoms of the alkyl radical, is 47 to 89 %, that R is in the p- or in the o- and p-position and that the upper limit of the proportion of the o-isomer is 20 %.

Inventors

• 👤 Peter Dr. Tacke
• 👤 Dieter Dr. Freitag
• 👤 Werner Dr. Nouvertné
• 👤 Ludwig Dr. Bottenbruch
• 👤 Peter Rolf Dr. Müller

Bibliographic Details