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    • 8. 发明授权
    • Process for preparing methacrylimide-containing polymers
    • 制备含甲基丙烯酰亚胺的聚合物的方法
    • US4816524A
    • 1989-03-28
    • US857163
    • 1986-04-29
    • Hisao AnzaiHideaki MakinoIsao SasakiKozi NishidaMasaru Morimoto
    • Hisao AnzaiHideaki MakinoIsao SasakiKozi NishidaMasaru Morimoto
    • C08F8/32
    • C08F8/32
    • Methacrylimide-containing polymers are continuously produced by introducing 10 to 60 wt. % of an inert solvent, 90 to 40 wt. % of methacrylic acid, a methacrylic acid ester or a monomer mixture comprising at least 50 wt. % of methacrylic acid or a methacrylic acid ester, and a radical polymerization initiator and a molecular weight modifier into a polymerization reaction zone, converting at least 80 wt. % of the charged monomer to a polymer at 60.degree.-170.degree. C., adding a compound represented by the formula:R--NH.sub.2wherein R represents a hydrogen atom, an alkyl group having 1-12 carbon atoms, a cycloalkyl group having 7-11 carbon atoms or an aryl group having 6-10 carbon atoms,to the polymerization reaction liquid, carrying out reaction of the resulting mixture at 150.degree. to 300.degree. C. in an imidization reaction zone, and finally separating volatile substances from the reaction fluid.
    • 含有甲基丙烯酰胺的聚合物通过引入10至60wt。 %的惰性溶剂,90〜40wt。 %的甲基丙烯酸,甲基丙烯酸酯或包含至少50wt。 %的甲基丙烯酸或甲基丙烯酸酯,以及自由基聚合引发剂和分子量调节剂进入聚合反应区,将至少80wt。 加入到60℃-170℃的聚合物的%,加入由式R-NH 2表示的化合物,其中R表示氢原子,具有1-12个碳原子的烷基,具有7个 -11个碳原子或具有6-10个碳原子的芳基,在聚合反应液中,在酰亚胺化反应区中将所得混合物在150-300℃下进行反应,最后从反应中分离出挥发性物质 流体。