| abstract |
PURPOSE: To increase a yield per unit solid catalyst, by polymerizing a 3C or higher olefin in the presence of an organic acid ester by using a catalyst obtained from a specified titanium-containing solid catalyst component and a trialkylaluminum. n CONSTITUTION: A catalyst is produced from (a) a solid catalyst compound obtained by contacting a titanium tetrachloride with a solid obtained by treating, with an organic acid ester, a titanium-containing solid obtained by contacting with a titanium tetrachloride, a solid obtained by reacting a Grignard compound with the reaction product between an aluminum halide and a tetraalkoxysilane and (b) a trialkylaluminum represented by the formula, wherein R 7 is a 2W6C alkyl. Then, a 3C or higher α-olefin such as propylene or 1-butene is polymerized in the presence of an organic acid ester such as methyl toluylate by the use of the catalyst. n COPYRIGHT: (C)1981,JPO&Japio |