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    • 1. 发明授权
    • Preparation of a cationic copolymer
    • 阳离子共聚物的制备
    • US4217262A
    • 1980-08-12
    • US37618
    • 1979-05-10
    • Anthony T. CosciaHans P. PanzerMichael N. D. O'Connor
    • Anthony T. CosciaHans P. PanzerMichael N. D. O'Connor
    • C08F2/32C08L33/02C08L33/24
    • C08F2/32
    • A cationic copolymer is prepared by first dissolving the total quantity of a suitable nonionic monomer in water. To this solution there is added up to about 95 mole percent of the total quantity of a suitable cationic monomer of greater reactivity than the nonionic monomer. The solution is then emulsified in a sufficient quantity of a hydrocarbon oil so as to provide a water-in-oil emulsion, with the water phase dispersed. Polymerization is then initiated with incremental additions of the withheld cationic monomer continuing throughout the copolymerization reaction. The resulting cationic copolymer exhibits a uniform distribution of cationic moieties along the polymer chain length which, in turn, has been shown to be a surprisingly more effective cationic copolymer when employed as a dewatering aid.
    • 通过首先将合适的非离子单体的总量溶解在水中来制备阳离子共聚物。 对于该溶液,加入比非离子单体更高反应性的合适的阳离子单体总量的约95摩尔%。 然后将溶液在足够量的烃油中乳化,以提供水相分散的油包水乳液。 然后通过在整个共聚反应中继续进行的逐渐添加的保留的阳离子单体开始聚合。 所得的阳离子共聚物沿着聚合物链长度显示出阳离子部分的均匀分布,其又被用作脱水助剂时,其显示出令人惊奇地更有效的阳离子共聚物。