Polymerization method

Details Polymerization method Polymerization method

1982-01-04

1984-05-01

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526142, 526156, 5263486, 526352, C08F 402, C08F 1002

Patent

active

044462883

ABSTRACT:
An olefin polymerization and copolymerization catalyst active in the presence of an alkyl aluminum cocatalyst is prepared by mixing, in the presence of a solvent, particles of a silica or alumina material having reactive surface groups, and a magnesium alkyl or a magnesium alkyl-aluminum alkyl complex of the general formula (MgR.sub.2).sub.m (AlR'.sub.3).sub.n where R and R' are alkyl groups and m
is between about 0.5 and 10, inclusive, to form a hydrocarbon insoluble reaction product which is then mixed, in the presence of a solvent, with an electron-donating alcohol and a titanium, vanadium or zirconium halide, oxyhalide or alkoxyhalide, followed by removal, such as by evaporation, of the solvent to give a dry, granular, solid catalyst.

REFERENCES:
patent: 3647772 (1972-03-01), Kashiwa
patent: 3787384 (1974-01-01), Stevens et al.
patent: 4105585 (1978-08-01), Matheson
patent: 4110523 (1978-08-01), Schweier et al.
patent: 4130699 (1978-12-01), Hoff et al.
patent: 4258159 (1981-03-01), Bienfait
patent: 4263168 (1981-04-01), Rochefort et al.
patent: 4263171 (1981-04-01), Shida et al.
Bradley et al., Metal Alkoxides, Academic Pren., N.Y., p. 39 (1978).

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