Agglomeration of natural or synthetic polymer powder - obtd. by agglomerating small sized fractions of powder in presence of soln. or dispersion of agglomerating aid

摘要

A dusting, water soluble or swellable agglomeration of natural or synthetic polymer powder is obtd. by agglomerating the less than 0.2mm, pref. less than 0.1 mm sized fractions of the powder in presence of a soln. or dispersion of an agglomerating aid in water and/or a non-miscible organic solvent or of the molten or sintered aid. Esp. 0.1-1 wt% aid, e.g. a (co)polymer of an olefin, a polyester, a polyvinyl ester, an epoxy resin, is used. The powder is a natural polysaccharide, or a synthetic (co)polymer based e.g. on maleic acid, (meth)acrylamide, cellulose. USE/ADVANTAGE - For absorption of body fluids, soil improvement, flocculating agent, thickener; the fines do not have to be separated from the rest of the powder to obtain the agglomerates.