Water soluble ter- or higher polymer water-in-oil emulsions comprising:
(a) an aqueous phase comprising from abouy 60 to about 80 weight percent and containing therein from about 30 to about 70 weight percent of a ter- or higher polymer and from about 30 to about 70 weight percent of water,
(b) a hydrophobic liquid comprising from about 15 to about 39.5 weight percent, and
(c) an oil-soluble surfactant comprising from about 0.5 to about 5 weight percent, said weight percents based on the total weight of the emulsion.
The water-in-oil emulsion may be inverted into aqueous systems wherein the polymer is released.
水溶性三元或以上聚合物油包
水型乳液,包括
(a)
水相,包括约 60%至约 80%的重量百分比,其中含有约 30%至约 70% 的三元或以上聚合物和约 30%至约 70%的
水、
(b) 一种疏
水性液体,重量百分比约为 15%至 39.5%,以及
(c) 油溶性表面活性剂,占约 0.5%至约 5%的重量百分比,所述重量百分比基于乳液的总重量。
油包
水型乳液可倒入
水性体系中,在其中释放聚合物。