| 摘要 |
The present invention pertains to a gelling promoter that is obtained by mixing a metathesis polymerization catalyst activator and a norbornene-based monomer, and that promotes the gelling during the polymerization of the norbornene-based monomer in the presence of the catalyst. The gelling promoter is prepared by mixing essentially only two ingredients, namely the activator and the norbornene-based monomer. The present invention also pertains to a liquid formulation that is for reaction injection molding (RIM) and that comprises the gelling promoter. The addition of the gelling promoter to the liquid formulation for RIM produces the effect of reducing the duration of the gelling that occurs when the liquid formulation has come into contact with the catalyst. The use of the liquid formulation for RIM, comprising such a gelling promoter, as a formulation for RIM methods produces the effect of enabling the manufacture of a molded body that retains high mechanical strength and has favorable surface conditions, and the effect of reducing the amount of resin residue on the mold after use. The reaction injectionmolded body of the present invention exhibits the effect of retaining high mechanical strength and having favorable surface conditions. |
