COPOLYCARBONATES WITH AN IDANE BISPHENOL BASE

摘要

The invention relates to novel copolycarbonates with a glass transition temperature TG of , containing the following as recurrent bifunctional carbonate structural units: A) at least one of the carbonate structural units of formula (I) wherein the R1s represent a C1-C12 alkyl radical, preferably a C1-C3 alkyl radical, especially a methyl radical; a halogen, preferably chlorine or bromine, independently of each other, respectively and n represents a whole number between 0 and 3, preferably 0, and B) at least one of the other carbonate structural units different to A, of formula (II) wherein the radical -O-R-O- represents any diphenolate radicals wherein -R- is an aromatic radical with 6 to 40 C atoms which has one or several aromatic nuclei containing aromatic or condensed, optionally heteroatoms and can optionally be substituted with C1-C12 alkyl radicals or halogen and can contain aliphatic radicals, cycloaliphatic radicals, aromatic nuclei or heteroatoms as bridging elements which have a glass transition temperature TG of as corresponding homopolycarbonates from carbonate structural units of formula (II). Copolycarbonates of 3-(4-hydroxyphenyl)1,1,3-trimethylindane-5-ol and bisphenol-M are especially preferred.