基本信息:
- 专利标题： 聚醯亞胺前驅物、聚醯亞胺及透明聚醯亞胺膜的製造方法
- 专利标题（英）：Polyimide precursor, polyimide, and manufacturing method of transparent polyimide film wherein the polyimide precursor serves as a heat-resistant transparent resin substrate material excellent in dimensional stability, transparency and heat resistance
- 专利标题（中）：聚酰亚胺前驱物、聚酰亚胺及透明聚酰亚胺膜的制造方法
- 申请号：TW106126887 申请日：2017-08-09
- 公开(公告)号：TW201805340A 公开(公告)日：2018-02-16
- 发明人： 王宏遠 , WANG, HONGYUAN , 平石克文 , HIRAISHI, KATSUFUMI , 森本敏弘 , MORIMOTO, TOSHIHIRO
- 申请人： 新日鐵住金化學股份有限公司 , NIPPON STEEL & SUMIKIN CHEMICAL CO.,LTD.
- 专利权人： 新日鐵住金化學股份有限公司,NIPPON STEEL & SUMIKIN CHEMICAL CO.,LTD.
- 当前专利权人： 新日鐵住金化學股份有限公司,NIPPON STEEL & SUMIKIN CHEMICAL CO.,LTD.
- 代理人： 葉璟宗; 卓俊傑
- 优先权： 2016-157944 20160810;2016-157945 20160810;2017-030689 20170222;2017-030698 20170222
- 主分类号： C08G73/10
- IPC分类号： C08G73/10
The present invention provides a polyimide precursor, a polyimide, and a manufacturing method of transparent polyimide film. The polyimide precursor has a structural unit originated from a diamine and a structural unit originated from an acid dianhydride. The polyimide precursor has a structural unit originated from 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl and a structural unit originated from 1,2,3,4-cyclobutanetetracarboxylic dianhydride, and contains more than 70 mol% of structural units originated from 1,2,3,4-cyclobutanetetracarboxylic dianhydride in all the structural units originated from acid dianhydride. When the polyimide precursor is imidized to form polyimide, the light transmittance is 5% or less at 308 nm, 70% or more at 400 nm, and the thermal expansion coefficient is 45 ppm/K or less.