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    • 1. 发明申请
    • Polymerisation of ethylenically unsaturated monomers
    • 烯属不饱和单体的聚合
    • US20100249321A1
    • 2010-09-30
    • US12801447
    • 2010-06-09
    • Richard J. HarrisonBruce C. GilbertAndrew F. ParsonsDerek J. Irvine
    • Richard J. HarrisonBruce C. GilbertAndrew F. ParsonsDerek J. Irvine
    • C08F251/00C08F14/00C08F24/00C08F26/06C08F26/10C08L75/00
    • C08F4/50
    • Ethylenically unsaturated, particularly acrylic, monomers are polymerised using a catalyst system including a manganese carbonyl initiator, an organic halogen reactive substrate and an allylic halide chain termination agent. Desirably the manganese carbonyl initiator is a dimanganese compound, particularly dimanganese decacarbonyl (Mn2(CO)10). The catalysis mechanism appears to involve initiator homolysis, abstraction of halogen from the reactive substrate forming an organic free radical which acts as a chain initiator for polymerisation and eventual reaction of the propagating chain radical with the chain terminating agent. The speed or extent of reaction may be modified by the inclusion of Lewis acids in the reaction mixture. The resulting polymers are telechelic and may have different end groups. The polymers can be reacted further to functionalise them and/or to form block copolymers.
    • 使用包括羰基羰基引发剂,有机卤素反应性底物和烯丙基卤化物链终止剂的催化剂体系来聚合乙烯基不饱和的,特别是丙烯酸的单体。 期望的羰基羰基引发剂是二甘氨酸化合物,特别是二甘氨酸的十羧基(Mn 2(CO)10))。 催化机理似乎涉及引发剂均聚,从反应性底物中提取卤素,形成有机自由基,其起到用于聚合的链引发剂和增链链基团与链终止剂的最终反应。 可以通过在反应混合物中加入路易斯酸来改变反应的速度或程度。 所得聚合物是遥爪的并且可以具有不同的端基。 聚合物可进一步反应以使其功能化和/或形成嵌段共聚物。