摘要 |
<p>Disclosed is an asymmetric hollow fiber gas separation membrane which is made of a soluble aromatic polyimide consisting of specific repeating units wherein the tetracarboxylic acid component is composed of a diphenylhexafluoropropane structure and a biphenyl structure while the diamine component is composed of a diaminobenzoic acid and one of diaminodibenzothiophene, diaminodibenzothiophene=5,5-dioxide, diaminothioxanthene- 10,10-dione and diaminothioxanthene-9,10,10-trione.</p> |
申请人 |
UBE INDUSTRIES, LTD.;YOSHINAGA, TOSHIMUNE;FUKUNAGA, KENJI;KANETSUKI, YUTAKA;UCHIDA, HIROSHI;SHIGEMURA, MINORU;TANIHARA, NOZOMU |
发明人 |
YOSHINAGA, TOSHIMUNE;FUKUNAGA, KENJI;KANETSUKI, YUTAKA;UCHIDA, HIROSHI;SHIGEMURA, MINORU;TANIHARA, NOZOMU |