Patent ID: 6710154
Filing Date: 2004-03-23
Classification: C08G,G11B

Abstract:
A method for the production and further processing of polycarbonate based on 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethyl cyclohexane and 4,4-(metaphenylene diisopropyl) diphenol, comprising the steps of:providing a composition comprising 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethyl cyclohexane and 4,4-(metaphenylene diisopropy) diphenol; reacting the composition using the phase boundary method to provide an organic polycarbonate phase; and filtering the organic polycarbonate phase at least two times; wherein the production and further processing of the polycarbonate is performed at temperatures of below 290Â° C.