Pulverulent binder composition

A pulverulent binder composition for binding particulate materials, comprising the components:

• A) 10 to 99.99 parts by weight of at least one pulverulent interpolymer having a glass transition temperature Tg or a melting temperature of 230° C. and containing units derived from one or more comonomers
• a1) selected from the group consisting of vinyl esters of optionally branched C1-18 alkylcarboxylic acids, (methy)acrylic esters of optionally branched C1-15 alcohols, dienes, monoolefins, vinyl aromatics and vinyl halides, and
• a2) from 0.1 to 50% by weight, based on the total weight of all comonomers, of one or more ethylenically unsaturated comonomers bearing at least one functional group;
• B) 0 to 89.99 parts by weight of at least one pulverulent compound different from interpolymer A) which bears two or more functional groups capable of entering into a covalent bond with the functional groups of said interpolymer A);
• and
• C) 0.01 to 90 parts by weight of at least one melt viscosity lowering component selected from the group consising of polyesters, polyamides, polyethers, polyolefins, polyvinyl alcohols, polyvinyl esters, polyvinyl acetals, fatty alcohols, fatty alcohol esters, fatty acids, fatty acid esters, fatty acid amides, fatty acid metal soaps, montan acids, montan acid esters, montan acid soaps, and paraffins, said melt viscosity lowering component having a glass transition temperature Tg or a melting temperature of ≦150° C.,
• wherein the parts by weight total 100 parts by weight.