| 摘要 |
PURPOSE:To provide a thermosetting compsn. which has excellent moldability and gives cured articles having good heat resistance and flexibility, by blending an epoxy compd. with a prepolymer obtd. by reacting an arom. cyanamide with an arom. amine compd. CONSTITUTION:An arom. cyanamide compd. of formula I (wherein A is an org. group having an arom. ring; R is H, benzenesulfonyl, benzenecarbonyl or benzyl group; m is 2 or greater) such as m-phenylene-dicyanamide is pre-reacted with an arom. amine of formula II (wherein B is an org. group having an arom. ring; n is 2 or greater) such as m-phenylene-diamine in a solvent such as methyl ethyl ketone at 60-150 deg.C to obtain a prepolymer. 5-100pts.wt. at least one compd. selected from among epoxy compd., maleimide compd., phenol compd., etc. is blended with 100pts.wt. said prepolymer to obtain the desired thermosetting compsn.
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