发明申请
US20080242829A1 METHODS FOR PRODUCING AND PURIFYING 2-HYDROCARBYL-3,3-BIS(4-HYDROXYARYL)PHTHALIMIDINE MONOMERS AND POLYCARBONATES DERIVED THEREFROM
有权
2-烃基-3,3-双（4-羟基）苯基咪唑单体和衍生自其的聚碳酸酯的生产和纯化方法
- 专利标题： METHODS FOR PRODUCING AND PURIFYING 2-HYDROCARBYL-3,3-BIS(4-HYDROXYARYL)PHTHALIMIDINE MONOMERS AND POLYCARBONATES DERIVED THEREFROM
- 专利标题（中）： 2-烃基-3,3-双（4-羟基）苯基咪唑单体和衍生自其的聚碳酸酯的生产和纯化方法
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申请号： US11694405申请日： 2007-03-30
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公开(公告)号： US20080242829A1公开(公告)日： 2008-10-02
- 发明人: Rajshekhar Basale , Balakrishnan Ganesan , Venkata Rama Narayanan Ganapathy Bholta , Gurram Kishan , Surendra Kulkarni , Pradeep Nadkarni , Suresh Shanmugam , Ravindra Vikram Singh
- 申请人： Rajshekhar Basale , Balakrishnan Ganesan , Venkata Rama Narayanan Ganapathy Bholta , Gurram Kishan , Surendra Kulkarni , Pradeep Nadkarni , Suresh Shanmugam , Ravindra Vikram Singh
- 申请人地址： US NY Schenectady
- 专利权人： GENERAL ELECTRIC COMPANY
- 当前专利权人： GENERAL ELECTRIC COMPANY
- 当前专利权人地址： US NY Schenectady
- 主分类号： C08G65/38
- IPC分类号： C08G65/38 ; C07D209/32
摘要：
Disclosed herein is a method comprising reacting a phenolphthalein material and a primary hydrocarbyl amine in the presence of an acid catalyst to form a reaction mixture comprising 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, wherein the phenolphthalein material comprises greater than or equal to 95 weight percent phenolphthalein, based on the total weight of phenolphthalein material; quenching the reaction mixture and treating the quenched reaction mixture to obtain a first solid. The first solid is then triturated with a trituration solvent and washed to obtain a second solid, wherein the second solid comprises greater than or equal to 97 weight percent 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, based on the total weight of the second solid. The second solid may be polymerized to form a polycarbonate.