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UV- FLAME-PROOFED UV-PROTECTED POLYCARBONATE MOLDING COMPOUNDS HAVING LOW MOLECULAR WEIGHT DEGRADATION

机译:低分子重量降解的防紫外线阻燃聚碳酸酯模塑料

摘要

The present invention relates to a salt-resistant, UV-resistant polycarbonate molding composition having an improved salt resistance and a lower introduction amount of a UV absorber into a polymer chain and thus has a higher relative viscosity than a polycarbonate having an increased amount of an UV absorber introduced therein, A) Average molecular weight Of at least one polycarbonate having a viscosity of from 18,000 to 40,000 g / mol, B) one or more reactive UV absorbers and C) an alkali metal or alkaline earth metal salt of at least one fluorinated organic acid, C) is characterized in that the free sulphate content is less than 0.007 wt% and the free fluoride content is less than 0.017 wt% based on the weight of each case C).
机译:本发明涉及一种耐盐,耐紫外线的聚碳酸酯模塑组合物,该组合物具有改进的耐盐性和较低的紫外线吸收剂引入聚合物链的量,因此其相对粘度高于具有增加量的聚碳酸酯的聚碳酸酯。引入其中的紫外线吸收剂,A)至少一种粘度为18,000至40,000 g / mol的聚碳酸酯的平均分子量,B)一种或多种反应性紫外线吸收剂,以及C)至少一种的碱金属或碱土金属盐氟化有机酸C)的特征在于,基于每种情况C)的重量,游离硫酸盐含量小于0.007wt%,并且游离氟化物含量小于0.017wt%。

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