公开(公告)号：US5753735A

公开(公告)日：1998-05-19

申请号：US876945

申请日：1997-06-16

申请人： Michael O. Okoroafor ,  William H. McDonald ,  Alan E. Wang

发明人： Michael O. Okoroafor ,  William H. McDonald ,  Alan E. Wang

IPC分类号： C08J9/00 ,  C08K5/54 ,  B01J13/00

CPC分类号： C08J9/0066 ,  C08J9/0023 ,  C08J2375/04 ,  Y10S516/01

摘要： A composition comprising a particulate dispersion of from 50% to 98.9% by weight of a siloxane-polyoxyalkylene copolymer surfactant, from 1% to 49.9% by weight of a nonionic organic surfactant other than the siloxane-polyoxyalkylene copolymer surfactant and from 0.1% to 25% by weight, based on the total weight of the composition, of a particulate material having a particle size of less than 20 microns, is described. A method of preparing such a composition, and polyurethane and polyisocyanurate foams containing such a composition are also described. The nonionic organic surfactant is preferably an ethoxylated nonylphenol. The particulate material is preferably a hydrophobic precipitated silica. The composition of the invention is useful as an additive in the preparation of rigid polyurethane and polyisocyanurate foams.

摘要翻译： 一种组合物，其包含50至98.9重量％的硅氧烷 - 聚氧化烯共聚物表面活性剂，1重量％至49.9重量％的除硅氧烷 - 聚氧化烯共聚物表面活性剂之外的非离子有机表面活性剂和0.1至25重量％ 描述了基于组合物总重量的重量％的粒径小于20微米的颗粒材料。 还描述了制备这种组合物的方法，以及含有这种组合物的聚氨酯和聚异氰脲酸酯泡沫。 非离子有机表面活性剂优选为乙氧基化壬基酚。 颗粒材料优选为疏水性沉淀二氧化硅。 本发明的组合物可用作制备刚性聚氨酯和聚异氰脲酸酯泡沫的添加剂。