首页> 外国专利> SUPPORTED CATALYSTS FOR USE IN ATOM TRANSFER RADICAL POLYMERIZATION AND CONTINUOUS PROCESSES FOR ATOM TRANSFER RADICAL POLYMERIZATION

SUPPORTED CATALYSTS FOR USE IN ATOM TRANSFER RADICAL POLYMERIZATION AND CONTINUOUS PROCESSES FOR ATOM TRANSFER RADICAL POLYMERIZATION

机译:用于原子转移自由基聚合的辅助催化剂和用于原子转移自由基聚合的连续方法

摘要

A series of support systems for atom transfer radical polymerization of various monomers is disclosed. The complexes of a copper bromide and a multidentate amine physically adsorbed onto silica gel, alumina gel or other polymeric particles mediate living polymerization of non- or low polar monomers, including methacrylates, acrylates and styrenic monomers. The polymers have controlled molecular weights and narrow molecular weight distributions. The catalyst/ligand complex may be easily recovered for subsequent uses. The recycled catalysts have high activities and mediated living polymerizations, producing polymers with controlled molecular weights and low molecular weight distributions. Multidentate amines were also chemically grafted onto silica gels. These grafted catalyst ligand complexes also mediate living polymerizations of monomers such as methacrylates, acrylates and styrenic monomers. Also disclosed is a continuous process for atom transfer radical polymerization using a column reactor packed with a supported catalyst. Homo-polymers and random copolymers with controlled molecular weights may be produced by the reactor in a continuous manner. Block copolymers of different monomers may also be prepared using packed column reactors arranged in series.
机译:公开了用于各种单体的原子转移自由基聚合的一系列载体体系。物理吸附在硅胶,氧化铝凝胶或其他聚合物颗粒上的溴化铜和多齿胺的络合物可介导非极性或低极性单体(包括甲基丙烯酸酯,丙烯酸酯和苯乙烯单体)的活性聚合。该聚合物具有受控的分子量和窄的分子量分布。催化剂/配体络合物可以容易地回收以用于后续用途。再循环的催化剂具有高活性和介导的活性聚合,可生产分子量可控且分子量分布低的聚合物。多齿胺也被化学接枝到硅胶上。这些接枝的催化剂配体络合物还介导单体的活性聚合,例如甲基丙烯酸酯,丙烯酸酯和苯乙烯单体。还公开了使用填充有载体催化剂的柱反应器进行原子转移自由基聚合的连续方法。可以通过反应器以连续方式生产具有受控分子量的均聚物和无规共聚物。也可以使用串联布置的填充柱反应器来制备不同单体的嵌段共聚物。

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