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。