Process for producing styrenic polymer

专利名称：Process for producing styrenic polymer发明人：Ryozo Okumura,Kiichi Izumida申请号：US07/833506申请日：19920211公开号：US05191040A公开日：19930302

摘要：A process for producing a styrenic polymer suitable for making moldedproducts which has excellent quality without a decrease in the productivity. The processcomprises feeding a compound consisting essentially of a styrenic monomer to 2 to 6units of reactors connected in series and carrying out a bulk polymerization at a reactiontemperature of 90° to 200° C. and a difference of reaction temperatures among the unitsof reactors of not more than 40° C. and in the presence of 10 to 450 ppm by weight of anorganic peroxide represented by the following formula (I): ##STR1## wherein R

represents a tertiary alkyl group or a tertiary aralkyl group, and R.sup.1 and R.sup.2 eachrepresent an alkyl group having 1 to 2 carbon atoms, the styrenic polymer having aweight average molecular weight of 30×10.sup.4 to 70×10.sup.4 and a ratio of weightaverage molecular weight (Mw) to number average molecular weight (Mn of not morethan 3.0.

申请人：IDEMITSU PETROCHEMICAL CO., LTD.

代理机构：Frishauf, Holtz, Goodman & Woodward

更多信息请下载全文后查看