公开(公告)号：SE312236B

公开(公告)日：1969-07-07

申请号：SE404758

申请日：1958-04-25

Applicant: HOECHST AG

Inventor： RUST K ,  GUMBOLD A ,  HEITZER E ,  HOERNDLER K ,  SOMMER S

IPC: C01G23/02 ,  C08F2/00 ,  C08F10/00 ,  B01J11/84

Abstract: C3-8 a -olefins such as propylene, butene-1, 3-methylbutene-1 or styrene are polymerized to products of more than 90% isotactic content, by use of a solid catalyst prepared by reacting an alkyl aluminium halide with TiCl4 in a reaction medium in the range of - 20 to + 40 DEG C. and in molar ratio of 0,5 to 2:1 and then heating the catalyst at 40-150 DEG C., which catalyst is activated with an organoaluminium compound, preferably an alkyl aluminium halide. The catalyst may be separated from the reaction medium and washed with an inert solvent, before or after the heat treatment; or the latter may be carried out by washing the catalyst with inert solvent at a raised temperature. Optically, the heat treatment is effected in presence of diphenyl ether, tetrahydrofurane, dioxane, sodium chloride or an organoaluminium compound.