公开(公告)号：US4535105A

公开(公告)日：1985-08-13

申请号：US587177

申请日：1984-03-07

申请人： Toshihiro Inaike ,  Shuji Yamamoto ,  Shunji Ohe ,  Kazunori Otsuka

发明人： Toshihiro Inaike ,  Shuji Yamamoto ,  Shunji Ohe ,  Kazunori Otsuka

IPC分类号： C08J3/09 ,  C08K5/34 ,  C08K5/20 ,  C08K5/41 ,  C08L79/08

CPC分类号： C08J3/091 ,  C08J2379/08

摘要： An aromatic polyamic acid solution composition useful as an electrically insulating varnish, comprises (1) an aromatic polyamic acid which is a polymerization product of (A) a tetracarboxylic acid component containing at least 80 molar % of the sum of (a) a first acid ingredient consisting of 3,3',4,4'-biphenyltetracarboxylic dianhydride and (b) a second acid ingredient consisting of at least one member selected from the group consisting of pyromellitic dianhydride, and 3,3'4,4'-benzophenone tetracarboxylic dianhydride, the molar ratio of the first acid ingredient to the second acid ingredient being in the range of from 30:70 to 75:25, with (B) an amine component consisting of at least one aromatic amine in a molar ratio of the tetracarboxylic acid component to the amine component of from 97:100 to 103:100, and which polymeric acid has a logarithmic viscosity number of from 0.1 to 1.5 determined in a concentration of 0.5 g/100 ml in N-methyl-2-pyrrolidone at a temperature of 30.degree. C., and dissolved in a concentration of from 5% to 40% by weight in (2) an organic polar solvent.

摘要翻译： 可用作电绝缘漆的芳族聚酰胺酸溶液组合物包括（1）芳族聚酰胺酸，其是（A）含有（a）第一酸的总量的至少80摩尔％的四羧酸组分的聚合产物 由3,3'，4,4'-联苯四羧酸二酐组成的成分和（b）由至少一种选自均苯四酸二酐和3,3'4,4'-二苯甲酮四羧酸组成的第二酸成分 二酸酐，第一酸成分与第二酸成分的摩尔比在30:70至75:25的范围内，（B）由至少一种芳族胺组成的胺组分，四羧酸的摩尔比 酸组分为97:100至103:100，并且该聚合酸的浓度为0.5g / 100ml，在N-甲基-2-吡咯烷酮中的对数粘度为0.1至1.5， 温度30℃， 并且在（2）有机极性溶剂中以5重量％至40重量％的浓度溶解。