CATALYST FOR POLYMERIZATION OF OLEFINS

摘要

Prodn. of catalyst comprises reacting TiCl4 with reaction product (I) of organoaluminium cpd. and electron donor, reacting the obtd. solid product (II) with electron donor and electron acceptor, mixing the obtd. solid product (III) with organoaluminium cpd. in inert solvent to prepare catalyst soln., absorbing a small quantity of alpha-olefin and a very small quantity of COS to the catalyst soln. maintained at 0 - 70 deg.C and prepolymerising.