发明名称 |
PROCESS FOR PRODUCTION OF COPOLYCARBONATES WITH REDUCED COLOR |
摘要 |
A method is provided for reducing the color generated during production of copolycarbonate that includes quinone-type residues. The method includes the steps preparing a reaction mixture containing precursors of monomer residues, selecting a catalyst, introduction strategy and adding catalysts according to the strategy. The strategy is sufficient to result in a product copolycarbonate with improved color. The method further includes the steps of introducing the reaction mixture to a series of process units and allowing the reaction mixture to polymerize thereby forming a copolycarbonate. The resulting copolycarbonate has improved color as compared to a copolycarbonate formed in a process without the steps of selecting a catalyst introduction strategy and introducing catalysts according to the selected strategy. ® KIPO & WIPO 2007
|
申请公布号 |
KR20070012348(A) |
申请公布日期 |
2007.01.25 |
申请号 |
KR20067016746 |
申请日期 |
2006.08.21 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
KAMPS JAN HENK;LENS JAN PLEUN |
分类号 |
C08G64/20;C08G64/00;C08G64/30 |
主分类号 |
C08G64/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|