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    • 7. 发明授权
    • Cationic nitrogen acrylamide polymers
    • 阳离子氮丙烯酰胺聚合物
    • US4777218A
    • 1988-10-11
    • US13517
    • 1987-02-11
    • Herbert K. ReimschuesselWilliam G. J. ChiangGeorge J. W. Tichenor
    • Herbert K. ReimschuesselWilliam G. J. ChiangGeorge J. W. Tichenor
    • C02F1/54C08F8/30C08F8/44C08F20/56
    • C02F1/54C08F8/30C08F8/48C08F2800/10
    • Novel cationic polymers are provided by reaction of high molecular weight polymers and copolymers of acrylamide with an alkyl epoxide compound such as glycidyldialkylamine or glycidyltrialkylammonium salt to form polymer chain units containing e.g. pendant (N-2-hydroxypropyl) dialkylamine groups or their trialkylammonium salts. Processes for making the graft copolymers are provided in which the reaction is carried out while maintaining the reaction mixture in gel form by swelling the starting solid polymer with a solvent mixture.The reaction may be carried out in a homogeneous reaction environment or in a heterogeneous reaction environment by dispersing the starting solid polymer in an inert liquid that is a non-solvent for both the polymer and the salt. The polymeric products of the reaction may be hardened with a suitable liquid, such as isopropanol, to a solid particulate material.
    • 通过高分子量聚合物和丙烯酰胺与烷基环氧化合物如缩水甘油基二烷基胺或缩水甘油基三烷基铵盐的共聚物的反应提供了新的阳离子聚合物,以形成含有例如, (N-2-羟丙基)二烷基胺基或其三烷基铵盐。 提供制备接枝共聚物的方法,其中通过用溶剂混合物溶胀起始固体聚合物,同时保持反应混合物为凝胶形式,进行反应。 该反应可以在均相反应环境中或通过将起始固体聚合物分散在用作聚合物和盐的非溶剂的惰性液体中而在均相反应环境中进行。 反应的聚合产物可以用合适的液体如异丙醇固化成固体颗粒材料。