| 摘要 |
A composition comprising (A) a polyphenol such as bisphenol A, (B) a polymer resulting from polymerizing (1) an alkenyl phenol such as p-isopropenylphenol and (2) a polymerizable ethylenically unsaturated monomer such as 2-ethylhexyl acrylate can be converted to a copolymer modified polycyanate by reaction with a cyanogen halide such as cyanogen chloride in the presence of a base such as triethylamine. These polycyanates can be cured by trimerization in the presence of a suitable catalyst or by copolymerization with an epoxy resin. Epoxy resins can also be prepared from the composition comprising components (A) and (B) by reaction with an epihalohydrin such as epichlorohydrin and subsequent dehydrohalogenation with a basic acting compound such as sodium hydroxide.
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