SILICONE-POLYCARBONATE BLOCK COPOLYMER AND POLYCARBONATE COMPOSITION WITH REDUCED HAZE,AND THEIR PRODUCTION

• Main Authors: PIITAA DEIBUITSUDO FUERUPUSU, YUUJIN POORINGU BOODEN, DANIERU RUUSU JIYOISU, GEIRII CHIYAARUZU DEIBUISU, JIEEMUZU FURANKURIN FUUBUAA
• Format: Patent
• Language: English
• Published: 02.07.1996
• Edition: 6
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

A method is provided for making silicone polycarbonate block copolymers and polycarbonate blends thereof having reduced haze. Silicone polycarbonate block copolymer formation is effected by using a phase transfer catalyst to generate polycarbonate oligomers having at least one terminal haloformate g...