| abstract |
Disclosed herein is a process for preparing highly filled acrylic articles comprising: (a) providing a solution of an acid-functional acrylic polymer-in-monomer solution; (b) mixing into said solution a catalytic amount of polymerization promoter system; (c) blending into said mixture 40 percent to 80 percent inert particulate filler to form a casting mixture; (d) introducing said casting mixture to a mold; and (e) curing said molded casting mixture; whereby the viscosity of said casting mixture is controlled and the settling of said filler is minimized by the presence of units from said carboxylic acid in said polymer. |