Process for the polymerization or copolymerization of ethylene

Details Process for the polymerization or copolymerization of ethylene Process for the polymerization or copolymerization of ethylene

1982-06-04

1984-08-07

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502111, 502116, 526125, 526128, 5263486, 526352, 526909, C08F 402, C08F 1002

Patent

active

044645180

ABSTRACT:
Polymerization of ethylene or copolymerization of ethylene with other .alpha.-olefin is carried out in the presence of a specific catalyst system. The catalyst system is obtained by preparing a reaction product (A) of an organic aluminum compound (I) represented by the formula AlR.sub.n.sup.1 X.sub.3-n where R.sup.1 is hydrogen or an alkyl group having from 1 to 10 carbon atoms, X is Cl or Br and n is a number satisfying 0<n<3, with a mixture of a straight chain aliphatic alcohol and a branched chain aliphatic alcohol or a cyclic alcohol, separately preparing a reaction product (B) of an organic magnesium compound with a hydropolysiloxane or a silicone compound in which organic groups and hydroxyl groups are bonded to silicon atoms, reacting the reaction product (A) with the reaction product (B) to produce a reaction product (C), reacting the reaction product (C) with a halogen-containing titanium or vanadium compound to obtain a solid product (D) and mixing the solid product (D) with an organic aluminum compound (II).

REFERENCES:
patent: 3907759 (1975-09-01), Okada et al.
patent: 4223118 (1980-09-01), Tsubaki et al.

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