Process for producing styrenic polymer

专利名称：Process for producing styrenic polymer发明人：Satoshi Ikeuchi,Norio Tomotsu申请号：US08/364728申请日：19941227公开号：US05451648A公开日：19950919

摘要：There is disclosed a process for producing a styrenic polymer having asyndiotactic configuration which comprises polymerizing a styrenic monomer containinghydrogen dissolved therein at a hydrogen partial pressure of at most 1 kg/cm.sup.2 G bythe use of a polymerization catalyst comprising an (a) transition metal compound and a(b) coordination complex compound composed of a cation and an anion in which aplurality of radicals are bonded to a metal, or an aluminoxane and, when necessary, a (c)alkylating agent. The above process is capable of modifying the molecular weight of theobjective SPS, lowering its molecular weight without expanding the molecular weightdistribution, and decreasing the required quantity of the catalyst and the residualquantities of metals in the resultant SPS, whereby the production cost of the objectiveSPS is considerably curtailed.

申请人：IDEMITSU KOSAN CO., LTD.

代理机构：Oblon, Spivak, McClelland, Maier, & Neustadt

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