| 摘要 |
PURPOSE:To prevent physical properties of an obtained crosslinked polymer molded product from lowering by a method wherein the catalyst component is used in excess within a specified amount over the amount, which develops the fastest polymerization rate. CONSTITUTION:In the reaction injection molding, which obtains a crosslinked polymer molded product by rapidly mixing the combination of reactive solutions, which consists of reactive solution of metathetical polymeric monomer containing catalyst component of metathetical polymerization catalyst type and reactive solution of metathetical polymeric monomer containing activating component of metathetical polymerization catalyst type, through collision mixing and casting the resultant mixture in a mold, the ratio of the catalyst component to the activating component is used in excess than the ratio of catalyst component to the activating component, which develops the fastest polymerization rate, by 50mol.% or less of the catalyst component. As the metathetical polymeric monomer, raw material mainly consisting of dicyclopentadiene is especially preferably used. As the catalyst component of metathetical polymerization catalyst type a tungsten compound is especially preferable. As the activating component of metathetical polymerization catalyst type, tetraalkyltin, aluminum alkyl compound and aluminum alkyl halide compound are preferable. |
