Liquid analogs of certain polyoxyalkylene compounds having a plurality of heteric polyoxypropylene/polyoxyethylene chains as dispersants for pesticidal formulations
申请人:BASF Corporation
公开号:EP0445603A1
公开(公告)日:1991-09-11
A stable, aqueous pesticide dispersion composition comprising a water insoluble pesticide dispersed by a liquid polyoxyalkylene-polyoxypropylene copolymer having the formula
[(EO,PO)m(PO)n[EO,PO)m'H]x
wherein Y is the nucleus of an organic reactive hydrogen compound containing x reactive hydrogen atoms and up to 6, inclusive, carbon atoms, x is an integer, m and n are numbers such that the total molecular weight of the copolymer is from about 3000 to 8000, EO is polyoxyethylene, PO is polyoxypropylene, the copolymer is from 30 to 55 weight percent hydrophile, and from 5 to 25 percent of the ethylene oxide present in the hydrophile is substituted by propylene oxide, such that the hydrophilic portion is heteric and the hydrophobic portion is block; and the balance water.
一种稳定的水性农药分散体组合物,包括由液态聚氧亚烷基-聚氧丙烯共聚物分散的水不溶性农药,其分子式为
[(EO,PO)m(PO)n[EO,PO)m'H]x
其中 Y 是含有 x 个活性氢原子和最多 6 个碳原子(包括 6 个碳原子)的有机活性氢化合物的核,x 是整数,m 和 n 是数字,这样共聚物的总分子量约为 3000 至 8000,EO 是聚氧乙烯,PO 是聚氧丙烯,共聚物中 30 至 55 重量百分比的亲水物,亲水物中 5 至 25 重量百分比的环氧乙烷被环氧丙烷取代,这样亲水部分是杂化的,疏水部分是嵌段的;余量为水。