Shaped articles

Claim 1

A shaped article obtained by impregnating or coating a preform comprised of mineral fibers, non-fibrous mineral fillers and starch with a composition containing a binder comprised of a copolymer of a) 60-95% by weight of methyl methacrylate, b) 5-40% by weight of acrylic or methacrylic acid, c) 0-35% by weight of one or more acrylic esters of a C 1 -C 8 -alkanol, d) 0-5% by weight of a copolymerizable olefinically polyunsaturated monomer, and e) 0-5% by weight of another copolymerizable monomer selected from the group consisting of acrylonitrile, methacrylonitrile, vinyl esters of alkanoic acids of 2 to 6 carbon atoms and aromatic vinyl compounds, with the proviso that ##EQU2## Tg 1 = the glass transition temperature in °K of a polymer solely composed of said methyl methacrylate, Tg 2 = the glass transition temperature in °K of a polymer solely composed of said acrylic or methacrylic acid, Tg 3 = the glass transition temperature in °K of a polymer solely composed of said one or more acrylic esters of C 1 -C 8 -alkanol, Tg 4 = the glass transition temperature in °K of a polymer solely composed of said another copolymerizable monomer, x 1 =w 1 /(w 1 +w 2 +w 3 +w 4 ), x 2 =w 2 /(w 1 +w 2 +w 3 +w 4 ), x 3 =w 3 /(w 1 +w 2 +w 3 +w 4 ), x 4 =w 4 /(w 1 +w 2 +w 3 +w 4 ), w 1 = the weight of said methyl methacrylate in said copolymer, w 2 = the weight of said acrylic or methacrylic acid in said copolymer, w 3 = the weight of said one or more acrylic esters of a C 1 -C 8 -alkanol in said copolymer, and w 4 = the weight of said another copolymerizable monomer in said copolymer.