Styrenebutadienerubber (SBR) was cyclized with the aid of cationic catalyst system based on diethylaluminum chloride(Al) and benzyl chloride(RCl).
应用一氯二乙基铝和苄基氯催化剂体系进行了丁苯橡胶的阳离子环化反应。
2
Solution polymerized styrene-butadienerubber ( S-SBR ) was fractionated by repeated precipitation method, using redistilled toluene as solvent and ethyl alcohol as precipitant.
本工作用甲苯作溶剂，乙醇作沉淀剂，用沉淀分级法，对溶聚丁苯橡胶（S-SBR）进行了分级。
3
A brief introduction of the technical innovation of butadiene evaporation unit is given in the article. During the expansion of the SBR(Styrene - ButadieneRubber) plant of Qilu Petrochemical Corp.