Catalyst containing an aromatic silicon compound for the polymer

Details Catalyst containing an aromatic silicon compound for the polymer Catalyst containing an aromatic silicon compound for the polymer

1985-06-12

1986-04-29

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526115, 526125, 526128, 526 65, 526352, C08F 464, C08F 1002

Patent

active

045858390

ABSTRACT:
A catalyst for the polymerization of ethylene comprising at least one halogenated compound of a transition metal of Groups IV to VI of the Periodic System and at least one aromatic silicon compound having the formula .phi..sub.n Si(OH).sub.4-n, in which .phi. is a substituted or unsubstituted aromatic or polyaromatic ring compound having from 6 to 15 carbon atoms and 1.ltoreq.n.ltoreq.3, said silicon compound being present in a molar ratio of between 0.2 and 2 inclusive with respect to said transition metal. Polymerization of ethylene may be carried out under a pressure of between 200 to 2500 bars and at a temperature of between 170.degree. and 300.degree. C. with the catalyst of this invention.

REFERENCES:
patent: 3558587 (1971-01-01), Bayer et al.
patent: 3701763 (1972-10-01), Wada et al.
patent: 4229318 (1980-10-01), Tamm et al.
patent: 4263169 (1981-04-01), Scata et al.
patent: 4298717 (1981-11-01), Machon

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