Original document(32 pages)  中文版
    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.
Application Number
申请号
200580009408 Application Date
申请日
2005.01.20
Title 名称 Process for production of copolycarbonates with reduced color
Publication Number
公开号
1934162 Publication Date
公开日
2007.03.21
Approval Pub. Date Granted Pub. Date
International Classification 分类号 C08G64/30
Applicant(s) Name
申请人
Gen Electric
Address 地址
Inventor(s) Name 发明人
Attorney & Agent 代理人 zhaosu lin
More information 更  多  信  息


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