我们曾报道过将负载型钛系催化剂用于乙丙共聚制取粘度添加剂的初步结果.这在当时是负载型钛系催化剂用于乙丙共聚的首次尝试,结果是催化剂的活性很高,寿命比传统用的钒系催化剂长,腐蚀性也小,共聚物用作润滑油的粘度调节剂性能良好.它的缺点是所得共聚物中有小部分不溶于烃类溶剂,将可溶部分调入机械油,数日后有微量絮状 We have previously reported the preliminary results of using a supported titanium catalyst in the copolymerization of ethylene and propylene as a viscosity additive, which was the first attempt of a supported titanium based catalyst for the copolymerization of ethylene and propylene at the time, with the result that the activity of the catalyst was high, It is longer and less corrosive than conventional vanadium catalysts and has good properties as a viscosity modifier for lubricating oils. The disadvantage is that a small percentage of the resulting copolymer is insoluble in hydrocarbon solvents, Mechanical oil, a few days later a trace floc