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    • 13. 发明授权
    • Heat-resistant maleimido polymers/block copolymers
    • 耐热马来酰亚胺聚合物/嵌段共聚物
    • US5294674A
    • 1994-03-15
    • US804674
    • 1991-12-10
    • Sunil K. VarshneyPhilippe TeyssieRoger Fayt
    • Sunil K. VarshneyPhilippe TeyssieRoger Fayt
    • C08F4/06C08F4/46C08F22/36C08F22/40C08F122/40C08F293/00C08F297/00C08F297/02C08F267/10C08F271/02
    • C08F297/026C08F122/40
    • Novel N-substituted maleimide homopolymers having a number-average molecular weight ranging from 12,000 to about 100,000 are prepared by anionically polymerizing an N-substituted maleimide monomer, in solvent phase, in the presence of at least one organometallic polymerization initiator which comprises sec-butyllithium, a sodium alcoholate, diphenylmethylpotassium, naphthalenelithium or naphthalenesodium, and novel N-substituted maleimide homopolymers having a polydispersity index ranging from 1.1 to 1.5 are prepared by anionically polymerizing an N-substituted maleimide monomer, in solvent phase, in the presence of at least one alkali metal organometallic polymerization initiator and at least one inorganic or organic salt of an alkali or alkaline earth metal; novel block copolymers include blocks of the above maleimido homopolymers and, e.g., blocks of an acrylic or methacrylic polymer.
    • 通过在至少一种有机金属聚合引发剂的存在下,在溶剂相中阴离子聚合N-取代的马来酰亚胺单体,制备数均分子量为12,000至约100,000的新型N-取代的马来酰亚胺均聚物,该有机金属聚合引发剂包括仲丁基锂 ,醇钠,二苯基甲基钾,萘锂或萘钠,以及分子量指数为1.1〜1.5的新型N-取代马来酰亚胺均聚物,是通过在溶剂相中,在至少一种 碱金属有机金属聚合引发剂和至少一种碱金属或碱土金属的无机或有机盐; 新的嵌段共聚物包括上述马来酰亚胺均聚物的嵌段和例如丙烯酸或甲基丙烯酸聚合物的嵌段。