Bismaleimide and production thereof

Abstract

Abstract NEW MATERIAL:2,2-Bis[ 4-(3-maleimidophenoxy)phenyl ]-1,1,1,3,3,3-hexafluoro propane shown by formula I. USE:A raw material monomer for polymaleimide resins and polyamine modified polymaleimide resins having excellent heat resistance and flexibility. Useful as resin materials such as electrical and electronic insulating materials, heat- resistant adhesives and aerospace industrial materials requiring specific functions. PREPARATION:An ether bond-containing diamine shown by formula II is reacted with maleic anhydride in an organic solvent such as acetone, a prepared bismaleamic acid shown by formula III is reacted with acetic anhydride as a dehydrating agent in an organic solvent such as acetone in the presence of a base such as triethylamine and a catalyst such as MgO and cobalt (II) acetate at 20-80 deg.C for 0.5-9hr and subjected to ring formation through dehydration to readily give a compound shown by formula I of light yellow crystal.

Inventors

• 👤 Yukihiro Yoshikawa
• 👤 幸宏 吉川
• 👤 Midori Yamazaki
• 👤 みどり 山崎
• 👤 Kenichi Sugimoto
• 👤 賢一 杉本
• 👤 Teruhiro Yamaguchi
• 👤 彰宏 山口

Bibliographic Details