公开(公告)号：EP0886664B1

公开(公告)日：2001-12-19

申请号：EP97908347.4

申请日：1997-03-14

申请人： Ciba Specialty Chemicals Water Treatments Limited

发明人： GREEN, Michael ,  HAWE, Malcolm ,  FIELD, John, Rodney

IPC分类号： C08J3/12

CPC分类号： C08J3/122 ,  Y10S526/91 ,  Y10S526/911 ,  Y10S526/916 ,  Y10T428/2982 ,  Y10T428/2998

摘要： Primary polymer particles having a size at least 90 % below 10 mu m and which contain water-soluble and water-insoluble polymer are made by reverse phase polymerisation of a water-soluble ethylenically unsaturated monomer or monomer blend with cross-linking agent, and the emulsion is then spray-dried to form spray-dried granules which disintegrate upon addition to water, thereby forming an aqueous composition of the insoluble particles having activity similar to the starting emulsion. This aqueous composition of insoluble particles is particularly useful for flocculation, for instance, flocculation of sewage sludge followed by centrifugation or belt pressing, or for viscosification.

摘要翻译： 通过水溶性烯键式不饱和单体或单体共混物与交联剂的反相聚合制备尺寸小于10μm至少90％且含有水溶性和水不溶性聚合物的初级聚合物颗粒， 然后将乳液喷雾干燥以形成喷雾干燥的颗粒，其在加入水时分解，由此形成具有与起始乳液类似的活性的不溶性颗粒的含水组合物。 这种不溶性颗粒的含水组合物特别适用于絮凝，例如污水污泥的絮凝，然后离心或带式压榨，或用于增粘。