| 摘要 |
Poly alpha -olefin, for example, polypropylene, is produced with an excellent yield by bringing, in the presence of an organic acid ester, a feed, containing at least one alpha -olefin having 3 or more carbon atoms, for example, propylene, into contact with a catalyst which comprises (A) a solid catalytic ingredient prepared (a) by reacting a Grignard compound of the formula, R3MgX wherein R3=C1-8 alkyl and X=halogen, with a reaction product of an aluminium halide with an organic silicon compound of the formula, Rn1Si(OR2)4-n, wherein R1=C1-8 alkyl or phenyl, R2=C1-8 alkyl, n=1, 2 or 3, (b) bringing the resultant reaction product into a first contact with titanium tetrahalide, (c) treating the resultant titanium-containing solid product with an organic acid ester, and, finally, (d) bringing the treated solid product into a second contact with titanium tetrahalide, and; (B) another catalytic ingredient consisting of a trialkyl aluminium of the formula, AlR34 wherein R4=C2-6 alkyl. |
