| 摘要 |
PURPOSE:To provide the title compsn. which does not cause interference in curing by the addition of a nitrite and gives good laminates and cast products, by incorporating a specified amount of an N,N-dialkylaniline (derivative) in an unsaturated polyester and a polymerizable monomer. CONSTITUTION:An unsaturated polyester resin compsn. contains an unsaturated polyester (A), a polymerizable monomer (B) (e.g., styrene) and 0.7-2.0wt% (based on the total amount of the components A and B) N,N-dialkylaniline or derivative (C) (e.g., N,N-dimethylaniline). It is known that an unsaturated polyester resin composed of the compds. A and B can be cured in the presence of diacyl peroxide and the compd. C at room temp. However, the curing reactivity is so high that the amount of the compd. C may be as low as 0.01-0.2wt% based on that of the resin. However, interference in curing with a nitrite cannot be prevented. When 0.7-2.0wt% compd. C is incorporated, the curing is hardly affected by the nitrite and no interference in curing occurs.
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