公开(公告)号：US5519106A

公开(公告)日：1996-05-21

申请号：US373034

申请日：1995-01-17

申请人： Masahiro Nukui ,  Takao Tayama ,  Takeshi Kashiwagi ,  Masatoshi Kimura ,  Hidekazu Shoji

发明人： Masahiro Nukui ,  Takao Tayama ,  Takeshi Kashiwagi ,  Masatoshi Kimura ,  Hidekazu Shoji

IPC分类号： C08G64/30 ,  C08G64/00

CPC分类号： C08G64/307

摘要： A process for preparing an aromatic polycarbonate resin from an aromatic dihydroxy compound and a carbonate diester by transesterification in the presence of a transesterification catalyst comprising; reacting a purified carbonate diester with an aromatic dihydroxy compound in the presence of a transesterification catalyst to form a polycarbonate prepolymer; said carbonate diester containing benzophenone and benzoate ester derivatives having a molecular weight of less than 1,000, each in an amount of 100 ppm or less, said polycarbonate prepolymer having a viscosity average molecular weight of 5,000 to 20,000 at a temperature of 140.degree. to 280.degree. C., the reaction pressure being from 0.1 Torr to normal pressure; polymerizing said prepolymer at a temperature of 240.degree. to 350.degree. C. in a lateral, bi-axial, self-cleaning reactor to obtain an aromatic polycarbonate resin having a viscosity average molecular weight of 15,000 to 60,000. The aromatic polycarbonate is colorless and transparent and is suitable for extrusion molding.

摘要翻译： 一种由酯交换催化剂存在下通过酯交换反应由芳族二羟基化合物和碳酸二酯制备芳族聚碳酸酯树脂的方法，包括： 在酯交换催化剂存在下使纯化的碳酸二酯与芳族二羟基化合物反应以形成聚碳酸酯预聚物; 所述含有分子量小于1,000的二苯甲酮和苯甲酸酯衍生物的碳酸酯二酯各自为100ppm以下，所述聚碳酸酯预聚物在140〜280℃的温度下的粘均分子量为5000〜20,000。 C.反应压力为0.1乇至常压; 在侧向双轴自清洁反应器中在240℃至350℃的温度下聚合所述预聚物，得到粘均分子量为15,000至60,000的芳族聚碳酸酯树脂。 芳香族聚碳酸酯是无色透明的，适用于挤出成型。

公开(公告)号：US5455324A

公开(公告)日：1995-10-03

申请号：US111455

申请日：1993-08-25

申请人： Masahiro Nukui ,  Takao Tayama ,  Takeshi Kashiwagi ,  Masatoshi Kimura ,  Hidekazu Shoji

发明人： Masahiro Nukui ,  Takao Tayama ,  Takeshi Kashiwagi ,  Masatoshi Kimura ,  Hidekazu Shoji

IPC分类号： C08G64/30 ,  C08G64/00

CPC分类号： C08G64/307

摘要： Disclosed herein is an aromatic polycarbonate resin containing benzophenone and benzoate ester derivatives which have a molecular weight less than 1,000, each in an amount of 100 ppm or less. Also disclosed is a process for preparing an aromatic polycarbonate resin from an aromatic dihydroxy compound and a carbonate diester in which the benzophenone derivative content is 100 ppm or less by transesterification, comprising preparing a polycarbonate prepolymer having a viscosity average molecular weight of 5,000 to 20,000 using an iminocarboxylic acid or salt thereof as a transesterification catalyst and polymerizing the prepolymer in an extruder.The aromatic polycarbonate is colorless and transparent and is suitable for extrusion molding.

摘要翻译： 本文公开了含有分子量小于1,000的二苯甲酮和苯甲酸酯衍生物的芳族聚碳酸酯树脂，其分别为100ppm以下。 还公开了一种由芳族二羟基化合物和碳酸二酯制备芳族聚碳酸酯树脂的方法，其中二苯甲酮衍生物含量通过酯交换反应为100ppm以下，包括使用以下方法制备粘均分子量为5,000至20,000的聚碳酸酯预聚物，其使用 作为酯交换催化剂的亚氨基羧酸或其盐，并在挤出机中使预聚物聚合。 芳香族聚碳酸酯是无色透明的，适用于挤出成型。

公开(公告)号：US06762235B2

公开(公告)日：2004-07-13

申请号：US10126406

申请日：2002-04-19

申请人： Kunihiro Takenaka ,  Ryo Saito ,  Hidekazu Shoji

发明人： Kunihiro Takenaka ,  Ryo Saito ,  Hidekazu Shoji

IPC分类号： C08K340

CPC分类号： C08G63/183

摘要： A polybutylene terephthalate resin having 30 eq/t or less of carboxyl end group, a crystallization temperature in a temperature decrease of 175° C. or higher and an amount of residual tetrahydrofuran of 300 ppm by weight or less; and compositions and molded articles comprising the resin and glass fiber, antioxidants and mold-releasing agents is provided. The polybutylene terephthalate resin can be molded in a short molding cycle, exhibits excellent resistance to hydrolysis and mold-releasing property, causes no corrosion of metals and generates little gas during molding. The compositions and the molded articles exhibit improved impact resistance, stability under heating and oxidation and mold-releasing property and can be advantageously used for members in electric and electronic products and in automobiles.

摘要翻译： 具有30eq / t以下羧基端基的聚对苯二甲酸丁二醇酯树脂，温度降低175℃以上的结晶温度和300重量ppm以下的残留四氢呋喃的量; 并提供包含树脂和玻璃纤维的组合物和模制品，抗氧化剂和脱模剂。 聚对苯二甲酸丁二醇酯树脂可以在短的成型周期中成型，显示出优异的耐水解性和脱模性，不会造成金属的腐蚀，并且在成型期间产生很少的气体。 组合物和成型体具有改进的耐冲击性，加热和氧化下的稳定性和脱模性，并且可以有利地用于电动和电子产品和汽车中的构件。