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公开(公告)号:US06403754B1
公开(公告)日:2002-06-11
申请号:US09770487
申请日:2001-01-29
申请人: Patrick Joseph McCloskey , Paul Michael Smigelski, Jr. , Timothy Brydon Burnell , Juan Rodriques Ordonez , Ignacia Vic Fernandez , Gerardo Hidalgo-Llinas , Rudy Francois Alain J. Peemans , Edward Venama
发明人: Patrick Joseph McCloskey , Paul Michael Smigelski, Jr. , Timothy Brydon Burnell , Juan Rodriques Ordonez , Ignacia Vic Fernandez , Gerardo Hidalgo-Llinas , Rudy Francois Alain J. Peemans , Edward Venama
IPC分类号: C08G6400
CPC分类号: C08G64/307 , Y02P20/582
摘要: Acidic impurities in dihydroxyaromatic compounds such as bisphenol A, as illustrated by sulfonic acids and mercaptocarboxylic acids, can have an adverse effect on the molecular weight of a polycarbonate prepared therefrom by transesterification. The same is true of acidic impurities in diaryl carbonates such as diphenyl carbonate, as illustrated by salicylic acid and ferric chloride. The reagents are analyzed for these impurities. Based on the analysis, the reagents are discarded or recycled, or a compensatory amount of alkali metal hydroxide is employed as a catalyst in the reaction.
摘要翻译: 二磺基化合物如双酚A的酸性杂质如磺酸和巯基羧酸所示,可通过酯交换对其制备的聚碳酸酯的分子量产生不利影响。 碳酸二芳基酯如碳酸二苯酯中的酸性杂质也是如此,如水杨酸和氯化铁所示。 分析这些杂质的试剂。 基于分析,将试剂废弃或再循环,或者在反应中使用补偿量的碱金属氢氧化物作为催化剂。
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公开(公告)号:US07495064B2
公开(公告)日:2009-02-24
申请号:US11426467
申请日:2006-06-26
申请人: David Domingo , Ignacio Vic Fernandez , Jorge Garcia Agudo , Gerardo Hidalgo-Llinas , Alfredo Lopez-Carretero , Miguel Angel Salomon
发明人: David Domingo , Ignacio Vic Fernandez , Jorge Garcia Agudo , Gerardo Hidalgo-Llinas , Alfredo Lopez-Carretero , Miguel Angel Salomon
CPC分类号: C08G64/00 , C08G64/307
摘要: A method of producing a polycarbonate is provided. In an embodiment of the present invention the method includes the steps of: (i) introducing to a melt polymerization reactor system a reaction mixture having a first dihydroxy compound and an acid stabilizer, a carbonate source, and a polymerization catalyst system containing K2HPO4; and (ii) allowing the reaction mixture to polymerize thereby forming polycarbonate.
摘要翻译: 提供了制造聚碳酸酯的方法。 在本发明的一个实施方案中,该方法包括以下步骤:(i)向熔体聚合反应器体系引入具有第一二羟基化合物和酸稳定剂,碳酸酯源和含有K 2 HPO 4的聚合催化剂体系的反应混合物; 和(ii)使反应混合物聚合,由此形成聚碳酸酯。
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公开(公告)号:US20070299241A1
公开(公告)日:2007-12-27
申请号:US11426467
申请日:2006-06-26
申请人: David Domingo , Ignacio Vic Fernandez , Jorge Garcia Agudo , Gerardo Hidalgo-Llinas , Alfredo Lopez-Carretero , Miguel Angel Salomon
发明人: David Domingo , Ignacio Vic Fernandez , Jorge Garcia Agudo , Gerardo Hidalgo-Llinas , Alfredo Lopez-Carretero , Miguel Angel Salomon
IPC分类号: C08G64/00
CPC分类号: C08G64/00 , C08G64/307
摘要: A method of producing a polycarbonate is provided. In an embodiment of the present invention the method includes the steps of: (i) introducing to a melt polymerization reactor system a reaction mixture having a first dihydroxy compound and an acid stabilizer, a carbonate source, and a polymerization catalyst system containing K2HPO4; and (ii) allowing the reaction mixture to polymerize thereby forming polycarbonate.
摘要翻译: 提供了制造聚碳酸酯的方法。 在本发明的一个实施方案中,该方法包括以下步骤:(i)向熔体聚合反应器系统引入具有第一二羟基化合物和酸稳定剂,碳酸酯源和含有K 2 u> HPO 4; 和(ii)使反应混合物聚合,由此形成聚碳酸酯。
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