POLYCARBONATE compositions with improved optical and thermal properties

摘要

1. A polycarbonate composition comprising at least one polycarbonate component containing structural units of the general formula (I): wherein R and R are independently hydrogen, halogen, alkyl with 1-8 carbon atoms, cycloalkyl with 5-6 carbon atoms , aryl with 6-10 carbon atoms or arylalkyl with 7-12 carbon atoms, m is 4 or 5, R and R, regardless of the X to which they are attached, and independently from each other, are hydrogen or alkyl with 1-8 carbon atoms, and X means carbon, characterized in that the sulfur content in the composition It is less than 2.0.2. A polycarbonate composition according to claim 1, comprising at least one polycarbonate component containing structural units of the general formula (II): wherein R and R are as indicated in formula (I). 3. The polycarbonate composition according to claim 1, characterized in that at least one of the polycarbonate components further comprises diphenols of the formula (III): wherein Z is an aromatic or alkylaromatic residue. The polycarbonate composition according to claim 1, characterized in that at least one of the polycarbonate components is a copolymer based on 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane (bisphenol-TMS) and bisphenol A, wherein the molar amount of bisphenol-TMS in terms of the total molar amount of the starting bisphenol is from 2 to 90 mol%. 5. The polycarbonate composition according to claim 1, characterized in that it contains from 0 to 5% by weight, based on the total amount of the polycarbonate composition, polymer additives or components of the mixtures selected from the group including internal lubricants, fluidity improvers, thermal stabilizers, antioxidants, UV and