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METHOD OF OBTAINING POWDERED POLYMERS, POWDERED POLYMER OBTAINED THEREBY AS WELL AS MINERAL BUILDING MATERIALS AND METHOD OF PRODUCING AQUEOUS DISPERSION OF A POLYMER
METHOD OF OBTAINING POWDERED POLYMERS, POWDERED POLYMER OBTAINED THEREBY AS WELL AS MINERAL BUILDING MATERIALS AND METHOD OF PRODUCING AQUEOUS DISPERSION OF A POLYMER
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机译:获得粉末状聚合物的方法,由此获得的粉末状聚合物以及矿物建筑材料以及生产聚合物水分散体的方法
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摘要
The use of copolymers (I) or their salts as drying aids for aqueous dispersions of polymers (II) is claimed. (I) comprise (A) 20-95 mole % 3-6C ethylenically unsaturated carboxylic acid(s), (B) 5-80 mole % hydroxyalkyl ester(s) of 3-6C ethylenically unsaturated carboxylic acid(s) and (C) 10 mole % other monomers. Also claimed are (i) a method of producing polymer powder by drying aqueous (II) dispersions in the presence of (I); (ii) the polymer powder obtained in this way; (iii) dry mineral building material formulations containing this powder; and (iv) aqueous polymer dispersions obtained by free radical aqueous emulsion polymerisation in the presence of (I).
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