4,4' bis (3 aminohuenokishi) 3,3', 5,5' tetoramechirubihueniru and its production manner

摘要

NEW MATERIAL:4,4'-Bis(3-aminophenoxy)-3,3',5,5'-tetramethylbiphenyl of formula I. USE:Useful as a raw material for polyimide resin having excellent heat-resistance, processability and high-temperature adhesivity. It has high utility as a base for aerospace vehicle and air craft, base for electrical and electronic parts, heat-resistant adhesive, etc., and can be used in various uses. PREPARATION:The objective compound of formula I can be produced by condensing 4,4'-dihydroxy-3,3',5,5'-tetramethylbiphenyl and m-dinitrobenzene in the presence of a base in an aprotic polar solvent such as N,N- dimethylformamide preferably at 120-180 deg.C and reducing the obtained 4,4'-bis(3- nitrophenoxy)-3,3',5,5'-tetramethylbiphenyl of formula II.