This composition improved to be polymerized and harden syrups of the methacrylate monomer - 0125 methyl styrene-b-acrylate in the presence of metallic salt of hemiperester maleic acid,

摘要

ABSTRACT OF THE DISCLOSUREIn the use of certain metal salts of the hemi-perester of maleic acid as catalysts for the polymerizationand curing of ethylenically unsaturated monomers and ofmethyl methacrylate-containing syrups the addition of anactivator such as sodium bisulfite provides a substantialreduction in the curing time. The process is relativelyinsensitive to the amount of filler used. The salts of maleichemi-peresters, in combination with the activators, are alsouseful for polymerizing ethylenically unsaturated monomers.