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    • 1. 发明授权
    • Aqueous emulsions containing hydrophilic silicone-organic copolymers
    • 含有亲水硅氧烷 - 有机共聚物的乳液
    • US4584337A
    • 1986-04-22
    • US683303
    • 1984-12-18
    • Chi-long LeeWen-Bin Shyu
    • Chi-long LeeWen-Bin Shyu
    • C08F299/00B01D53/22B01D71/28B01D71/40B01D71/70B01D71/80C08F283/12C08F290/00C08F290/06C08F299/08C08G18/61C08G18/81C08L83/00C08L83/04C08L83/10C09D5/14C09D155/00C09D183/07C08L51/08
    • C08G18/61C08F290/068C08G18/8116
    • This present invention provides aqueous emulsions which are capable of depositing coatings and membranes of hydrophilic, water-absorbing silicone-organic polymer elastomers. The elastomers are free radical polymerized copolymers of (A) from 50 to 95 parts by weight of block copolymers containing polydiorganosiloxane segments and polyalkyleneoxy segments which block copolymers contain terminal aliphatically unsaturated groups such as those derived from the reaction of isocyanatoethyl methacrylate with terminal free hydroxyl groups present on the polyalkyleneoxy segments and (B) from 5 to 50 parts by weight of at least one substantially water insoluble aliphatically unsaturated organic monomer which is compatible with (A) such as methyl methacrylate. The aqueous emulsions are useful for forming coatings and membranes of the above elastomers and also provide a vehicle for the deposition of coatings of such elastomers which are capable of controllably releasing bioactive agents such as insecticides or herbicides which are dispersed within the elastomer film deposited from the aqueous emulsion.
    • 本发明提供了能够沉积亲水性,吸水性有机硅聚合物弹性体的涂层和膜的水性乳液。 弹性体是(A)50至95重量份的含聚二有机硅氧烷链段和聚亚烷基氧基链段的嵌段共聚物的自由基聚合共聚物,所述嵌段共聚物含有末端脂族不饱和基团,例如衍生自甲基丙烯酸异氰酸根合乙酯与末端游离羟基的反应 存在于聚亚烷基氧基部分和(B)5至50重量份的与(A)如甲基丙烯酸甲酯相容的至少一种基本上不溶于水的不饱和有机单体。 水乳液可用于形成上述弹性体的涂层和膜,并且还提供用于沉积这种弹性体的涂层的载体,其能够可控地释放生物活性剂如杀虫剂或除草剂,其分散在由 水乳液。