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NOVEL (CO)POLYMERS AND A NOVEL POLYMERIZATION PROCESS BASED ON ATOM (OR GROUP) TRANSFER RADICAL POLYMERIZATION
NOVEL (CO)POLYMERS AND A NOVEL POLYMERIZATION PROCESS BASED ON ATOM (OR GROUP) TRANSFER RADICAL POLYMERIZATION
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机译:新型(共)聚合物和基于原子(或基团)转移自由基聚合的新型聚合过程
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摘要
A new polymerization process (atom transfer radical polymerization, or ATRP) based on a redox reaction between a transition metal (e.g., Cu(I)/Cu(II), provides "living" or controlled radical polymerization of styrene, (meth)acrylates. and other radically polymerizable monomers. Using various simple organic halides as model halogen atom transfer precursors (initiators) and transition metal complexes as a model halogen atom transfer promoters (catalysts), a "living" radical polymerization affords (co)polymers having the predetermined number average molecular weight by .DELTA.(M]/[I]o (up to M n 10 5) and a surprisingly narrow molecular weight distribution (M w/M n), as low as 1.15. The participation of free radical intermediates in ATRP is supported by end-group analysis and stereochemistry of the polymerization. In addition, polymers with various topologies (e. g., block, random, star, end-functional and in-chain functional copolymers (for example, of styrene and methyl (meth)acrylate]) have been synthesized using the present process. The polymeric products encompassed by the present invention can be widely used as plastics, elastomers, adhesives, emulsifiers, thermoplastic elastomers, etc.
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机译:一种基于过渡金属(例如Cu(I)/ Cu(II))之间的氧化还原反应的新聚合过程(原子转移自由基聚合或ATRP)可提供苯乙烯,(甲基)丙烯酸酯的“活性”或受控自由基聚合使用各种简单的有机卤化物作为模型卤原子转移前体(引发剂)和过渡金属配合物作为模型卤原子转移促进剂(催化剂),“活性”自由基聚合可提供具有预定功能的(共)聚合物数均分子量为Δ(M] / [I] o(最高达M n> 10 5),分子量分布极窄(M w / M n),低至1.15。端基分析和聚合的立体化学可为ATRP中的中间体提供支持。此外,具有各种拓扑结构的聚合物(例如嵌段,无规,星形,端官能和链内官能共聚物(例如,苯乙烯和甲基(甲基)丙烯酸酯])已使用本方法合成。本发明涵盖的聚合物产品可以广泛用作塑料,弹性体,粘合剂,乳化剂,热塑性弹性体等。
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