| abstract |
The invention relates to a process for the production of moldings from particulate materials and binders which can be reused after comminution, characterized in that the particulate materials with a binder composition containing DOLLAR AA) one or more polymers from one or more comonomer units from the group , comprising vinyl esters of unbranched or branched alkylcarboxylic acids with 1 to 18 C atoms, acrylic acid esters or methacrylic acid esters of branched or unbranched alcohols with 1 to 15 C atoms, dienes, olefins, vinyl aromatics and vinyl halides, and from 4 to 60% by weight, based on the total weight of the copolymer, one or more units which contain carboxyl, hydroxyl, phosphonate, sulfonate or NH groups, and DOLLAR AB) a filler or a plurality of fillers with a polar surface which correspond to those mentioned under A) polar groups can interact, DOLLAR A treat be formed and shaped and solidified into shaped bodies, and if necessary the shaped body thus obtained is comminuted for recycling and the material thus obtained is reused for the production of shaped bodies. |