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公开(公告)号:US20060094856A1
公开(公告)日:2006-05-04
申请号:US10979608
申请日:2004-11-01
CPC分类号: B01D3/146 , B01J2219/00038 , B01J2219/0004 , C08G64/307 , Y02P20/582
摘要: A method of making polycarbonates comprises melt-polymerizing an aromatic dihydroxy compound and a carbonic acid diester in a presence of a polymerization catalyst in a reactor system producing a byproduct stream, wherein the polymerization catalyst comprises a quaternary phosphonium compound; and purifying the byproduct stream to separate phenol, wherein the separated phenol has a phosphorus concentration of less than or equal to about 3 part per million, based upon the total weight of the phenol separated.
摘要翻译: 制备聚碳酸酯的方法包括在聚合催化剂存在下在产生副产物流的反应器系统中使芳族二羟基化合物和碳酸二酯熔融聚合,其中聚合催化剂包含季鏻化合物; 和纯化副产物流以分离苯酚,其中基于分离的苯酚的总重量,分离的苯酚的磷浓度小于或等于约3ppm。
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公开(公告)号:US20060094854A1
公开(公告)日:2006-05-04
申请号:US10979479
申请日:2004-11-01
申请人: Gerardo Hidalgo , Patrick McCloskey , Alberto Nisoli , Lina Prada
发明人: Gerardo Hidalgo , Patrick McCloskey , Alberto Nisoli , Lina Prada
CPC分类号: B01D3/146 , B01J2219/00038 , B01J2219/0004 , C08G64/307 , Y02P20/582
摘要: A method of making polycarbonate comprises melt-polymerizing an aromatic dihydroxy compound and a carbonic acid diester in a presence of a polymerization catalyst in a reactor system producing a byproduct stream, wherein the polymerization catalyst comprises a quaternary phosphonium compound; and purifying the byproduct stream to separate the carbonic acid diester, wherein the separated carbonic acid diester has a phosphorous concentration of less than or equal to about 30 parts per million.
摘要翻译: 制备聚碳酸酯的方法包括在聚合催化剂存在下在产生副产物流的反应器系统中使芳族二羟基化合物和碳酸二酯熔融聚合,其中聚合催化剂包含季鏻化合物; 并纯化副产物流以分离碳酸二酯,其中分离的碳酸二酯的磷浓度小于或等于约30ppm。
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公开(公告)号:US07189869B2
公开(公告)日:2007-03-13
申请号:US10979608
申请日:2004-11-01
IPC分类号: C07C69/96
CPC分类号: B01D3/146 , B01J2219/00038 , B01J2219/0004 , C08G64/307 , Y02P20/582
摘要: A method of making polycarbonates comprises melt-polymerizing an aromatic dihydroxy compound and a carbonic acid diester in a presence of a polymerization catalyst in a reactor system producing a byproduct stream, wherein the polymerization catalyst comprises a quaternary phosphonium compound; and purifying the byproduct stream to separate phenol, wherein the separated phenol has a phosphorus concentration of less than or equal to about 3 part per million, based upon the total weight of the phenol separated.
摘要翻译: 制备聚碳酸酯的方法包括在聚合催化剂存在下在产生副产物流的反应器系统中使芳族二羟基化合物和碳酸二酯熔融聚合,其中聚合催化剂包含季鏻化合物; 和纯化副产物流以分离苯酚,其中基于分离的苯酚的总重量,分离的苯酚的磷浓度小于或等于约3ppm。
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公开(公告)号:US07183371B2
公开(公告)日:2007-02-27
申请号:US10979479
申请日:2004-11-01
IPC分类号: C08G64/00
CPC分类号: B01D3/146 , B01J2219/00038 , B01J2219/0004 , C08G64/307 , Y02P20/582
摘要: A method of making polycarbonate comprises melt-polymerizing an aromatic dihydroxy compound and a carbonic acid diester in a presence of a polymerization catalyst in a reactor system producing a byproduct stream, wherein the polymerization catalyst comprises a quaternary phosphonium compound; and purifying the byproduct stream to separate the carbonic acid diester, wherein the separated carbonic acid diester has a phosphorous concentration of less than or equal to about 30 parts per million.
摘要翻译: 制备聚碳酸酯的方法包括在聚合催化剂存在下在产生副产物流的反应器系统中使芳族二羟基化合物和碳酸二酯熔融聚合,其中聚合催化剂包含季鏻化合物; 并纯化副产物流以分离碳酸二酯,其中分离的碳酸二酯的磷浓度小于或等于约30ppm。
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