发明名称 |
Aromatic polycarbonates having polyfunctional UV screening units, method for making and use |
摘要 |
UV stabilized polycarbonates are provided having chemically combined polyhydric phenol benzotriazole carbonate units, such as 1,1-bis(4-hydroxyphenyl)-1-[4-hydroxy-3-(N-2-benzotriazole)phenyl]ethane carbonate units and methods for making. Incorporation of the polyhydric phenol benzotriazole functional units into the polycarbonate backbone can be achieved by redistribution or transesterification under melt polymerization conditions.
|
申请公布号 |
US5556936(A) |
申请公布日期 |
1996.09.17 |
申请号 |
US19940341240 |
申请日期 |
1994.11.17 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
KING, JR., JOSEPH A.;MCCLOSKEY, PATRICK J.;COLLEY, ALICE M.;DARDARIS, DAVID M.;FONTANA, LUCA P.;BERNDSEN, JOSEF G. |
分类号 |
C08G64/12;(IPC1-7):C08G64/00 |
主分类号 |
C08G64/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|