| abstract |
NEW MATERIAL:An aromatic diamine compound of formula I (R is H, CH 3 ), and a bismaleimide compound of formula II. n EXAMPLE: 1,4-Bis[4-(4-aminophenoxy)-α,α-dimethyl-benzyl]benzene, and 1, 4- bis[4-(4-maleimidophenoxy)-α,α-dimethylbenzyl]benzene. n USE: The compound of formula I is useful as a raw material for resins having excellent flexibility and moldability and as a curing agent, and the compound of formula II is useful as a raw material for heat-resistant resins having improved flexibility and water absorbing property. n PREPARATION: A compound of formula III is reacted with nitrochlorobenzene or dinitrobenzene in the presence of a base in an aprotic solvent, and the prepared compound of formula IV is reduced to prepare the compound of formula I. The compound of formula I is subjected to a dehydrative condensation reaction with maleic anhydride to prepare the compound of formula II. n COPYRIGHT: (C)1992,JPO&Japio |