Aromatic bismaleimide derivatives and process for preparing...

Details Aromatic bismaleimide derivatives and process for preparing... Aromatic bismaleimide derivatives and process for preparing...

C - Chemistry, Metallurgy

07

D

260/306.3

C07D 207/456 (2006.01) C07D 207/452 (2006.01) C07D 403/12 (2006.01)

Patent

CA 1284328

Abstract A novel aromatic bismaleimide having the formula (I): Image (I) wherein X is Image , Image , Image or Image , where R1 R2, R3 and R4 are a hydrogen atom or a methyl group. The bismaleimide is prepared by reacting an aromatic diamine having the formula (II): Image (II) wherein X is the same as in the formula (I) with maleic anhydride and then conducting the ring-closing reaction of the resultant aromatic bismaleamic acid. The bismaleimide is useful as the raw material for aromatic bismaleimide type thermal setting resin having excellent impact strength, flexibility and toughness.

526035

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