Polymerization catalyst and method

Details Polymerization catalyst and method Polymerization catalyst and method

1984-02-27

1991-04-09

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526123, 526352, C08F 4658, C08F 1000

Patent

active

050066196

ABSTRACT:
A catalyst and method in which the catalyst is used in association with an aluminum cocatalyst in the polymerization and copolymerization of 1-olefins. The catalyst is prepared by reacting certain multifunctional organic silicon compounds (silanes) with silica, alumina or the like having surface hydroxyl groups, or a mixture thereof, in which the silicon compound reacts with these surface hydroxyl groups, followed by reacting the product of this with a halide or alkoxide of a Group IVB or VB transition metal such as titanium, vanadium, zirconium or mixtures of these and finally reacting this product with a Group IIA organometallic compound or compound such as magnesium and calcium. The Group IIA organometallic compound can also be added before these transition metal compounds.

REFERENCES:
patent: 3787384 (1974-01-01), Stevens et al.
patent: 4115319 (1978-09-01), Scata et al.
patent: 4258159 (1981-03-01), Bienfait
patent: 4301029 (1981-11-01), Caunt et al.
patent: 4468477 (1984-08-01), Caunt et al.
patent: 4565795 (1986-01-01), Short et al.

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