Polymerization of ethylene

Details Polymerization of ethylene Polymerization of ethylene

1988-08-12

1990-06-05

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502117, 502127, 526160, 5263485, 5263486, 526352, C08F 466, C08F 1002

Patent

active

049315170

ABSTRACT:
A process for the polymerization of ethylene comprises bringing ethylene or ethylene and at least one .alpha.-olefin in contact with a catalyst comprising a metallocene compound of a transition metal selected from Groups IVB, VB and VIB, an aluminoxane and a silicon compound having an Si-O-C bond for polymerization. The use of the silicon compound having an Si-O-C bond in the catalysis by a combination of a metallocene compound and an aluminoxane results in the production of ethylene polymers having a lower melt flow rate (MFR) than those produced similarly except for the silicon compound not being used.

REFERENCES:
patent: 3242099 (1966-03-01), Manyik et al.
patent: 3271376 (1966-09-01), Achon et al.
patent: 4451688 (1984-05-01), Kuroda et al.
patent: 4542199 (1985-09-01), Kaminsky et al.
Chemical Abstracts, vol. 68, No. 10, 1968, p. 3935, No 40310m, Columbus, Ohio, US; & JP-A-22 058 ('67) (Keiichi Azuma, Kazuo Shikata, and Kaiji Yokokawa), 30-10-1964.

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