| 摘要 |
<p>1535483 Acetone-anil/maleimide copolymers CIBA-GEIGY AG 6 April 1977 [8 April 1976] 14503/77 Heading C3P A curable mixture comprises (a) one or more maleimides of formula in which R is an n valent aliphatic or aromatic group and n is 1, 2 or 3 and/or maleimide prepolymers obtained by the reaction of one or more such maleimides with an aliphatic, cycloaliphatic or aromatic diprimary diamine of 2-40 carbon atoms with a ratio of 1 imido group equivalent to 0À05 to 1 amino group equivalent; (b) acetone-anil (i.e. 2,2,4-trimethyl-1-dihydroquinoline; and optionally (c) a compound containing at least one C = C group. The compositions are curable at 50- 300‹ C., preferably in a mould, to produce articles. In the examples, compound (a) is either N,N<SP>1</SP> - 4,4<SP>1</SP> - diphenylmethane - bismaleimide, or a reaction product thereof with 4,4<SP>1</SP>-diaminodiphenyl methane. Comonomers (c) of diallyl phthalate, or diallyl bisphenol A are also used.</p> |
