<p>A method of producing a polycarbonate, the method comprising: polymerizing a dihydric phenol and a carbonate precursor in the presence of a stabilizer to provide a polycarbonate with a yellowness index of less than or equal to 10 measured in accordance with ASTM E313 test method on molded samples having a thickness of about 2.5 millimeters; wherein the stabilizer is selected from the group consisting of ascorbic acid, salts of ascorbic acid, esters of ascorbic acid and a mixture of two or more of the foregoing; wherein the dihydric phenol is represented by Formula (I), wherein R is a hydrogen atom or an aliphatic functionality having 1 to 6 carbon atoms; and n is an integer having a value of 1 to 4.</p>
申请公布号
WO2007146487(A1)
申请公布日期
2007.12.21
申请号
WO2007US66842
申请日期
2007.04.18
申请人
GENERAL ELECTRIC COMPANY;ASHTEKAR, SUNIL;KAMPS, JAN, HENK;LENS, JAN, PLEUN;NADKARNI, PRADEEP;THAMPI, JEGADEESH