Thermoplastic composition of thermally cross-linked styrene-butadiene copolymer blended with styrene-acrylonitrile copolymer
Abstract
Abstract TO OVERCOME THE WHITE FRACTURE PROBLEM ASSOCIATED WITH TRANSPARENT ARTICLES PRODUCED FROM POLYMERIC BLENDS, AND ALSO TO OBTAIN TOUGH TRANSPARENT ARTICLES HAVING HIGHFLEXURAL STRENGTHS, THERE IS PROVIDED A HOMOGENEOUS BLEND OF: WITH THE PROVISION THAT THE RUBBERY STYRENE-BUTADIENE COPOLYMER WAS COPOLYMERIZED IN THE PRESENCE OF UP TO ABOUT 0.1% OF A CONTROL AGENT, SUCH AS ALKYL MERCAPTAN, THE WEIGHT RATIO OF BUTADIENE TO STYRENE BEING 35:65 TO 65:35 AND THE PROPORTION IN THE THERMOPLASTIC COPOLYMER BEING 65-83% STYRENE AND 17-35% ACRYLONITRILE. (1) 3-17 PARTS BY WEIGHT OF A HIGHLY THERMALLY CROSSLINKED, PREFERABLY TO THE EXTENT OF AT LEAST 90% RUBBERY COPOLYMER OF STYRENE-BUTADIENE; AND (2) 83-97 PARTS BY WEIGHT OF A THERMOPLASTIC COPOLYMER OF STYRENE-ACRYLONITRILE;
Inventors
- 👤 Josef Dasch
Bibliographic Details
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