Chinese Journal of Applied Chemistry ›› 1984, Vol. 0 ›› Issue (3): 41-46.
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Zhao Xingfa1, Yang Dezheng1, Zhou Yishou1, Din Hongan1, Zhang Li2, Chen Xiuhua2, Xu Yun2, Liao Shijian2, Guo Hefu2
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Abstract: A highly active supported catalyst (TiCl4-PCl3)/MgCl2-AlEt3 for ethylene-propylene copolymerization is reported. Ethylene-propylene copolymer withlow molecular weight and narrow molecular weight distribution has beenobtained through the addition of PCl3 ligand in the catalyst system andthe hydrogen regulation in the course of reaction. The copolymer is sui-table for viscosity index improver for lubricating oil, having rather goodoverall properties in respect of viscosity index, thickness, low temperatureviscosity, and stabilities against shearing, oxidation. heat etc..
Zhao Xingfa, Yang Dezheng, Zhou Yishou, Din Hongan, Zhang Li, Chen Xiuhua, Xu Yun, Liao Shijian, Guo Hefu. A VISCOSITY INDEX IMPROVER FOR LUBRICATING OIL FROM ETHYLENE-PROPYLENE COPOLYMER[J]. Chinese Journal of Applied Chemistry, 1984, 0(3): 41-46.
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