| 摘要 |
Curable mixtures containing (a) an aromatic bismaleimide of formula <IMAGE> (I) wherein R1 and R2 are identical or different and each is C1-C4alkyl, and R3 and R4 are each independently of the other a hydrogen or halogen atom, and (a) a propenyl compound of formula II <IMAGE> (II) wherein m and n are each independently of the other 1 or 2, Z is a hydrogen atom or C1-C4alkoxy, and A is a radical of formula IIa, IIb or IIc <IMAGE> (IIa) <IMAGE> (IIb) or <IMAGE> (IIc) wherein D is -SO2- or -CO- or is a radical of formula <IMAGE> (III) or <IMAGE> (IV) wherein X and X1 are each independently of the other -CO-, -SO2- or -O-, and p is 0 or 1, E is phenylene or a radical of formula V <IMAGE> (V) wherein G is <IMAGE> and q is 0 or 1, are readily processable, well suited for the preparation of prepregs or fibre-reinforced composites, and give mouldings having excellent fracture toughness.
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