REDISPERSIBLE POLYMER POWDERS

专利名称：REDISPERSIBLE POLYMER POWDERS发明人：KUEHN, HARTMUT,KIESEL,

VOLKER,ROTHENHAEUSSER,BERND,WICHMANN, ANDREAS

申请号：EP963390.4申请日：19981208公开号：EP1042391A1公开日：20001011

摘要：A redispersible polymer powder has very polyvalent uses, for example inhydraulic setting systems, but also as binder for the most different applications, and canbe produced by spray drying aqueous dispersions. The sprayable aqueous dispersionsare prepared by mixing an aqueous polymer dispersion 1 (containing polymer I) with anaqueous polymer dispersion 2 (containing polymer II). The diameter of the particles ofpolymer I is 5 to 150 times, preferably 15 to 50 times larger than the diameter of theparticles of polymer II. Polymer I is a film-forming polymer at room temperature whilepolymer II has a higher glass transition temperature than polymer I, is water-insolubleand therefore is undissolved in the aqueous dispersion to be sprayed. These polymerpowders are characterised by a distinctly improved block strength and very goodstorage stability.

申请人：BUNA SOW LEUNA OLEFINVERBUND GMBH

地址：Postfach 11 63 06201 Merseburg DE

国籍：DE

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