Olefin polymerization catalyst component, process for production

Details Olefin polymerization catalyst component, process for production Olefin polymerization catalyst component, process for production

1990-10-31

1993-09-21

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526138, 526348, 5263486, 526904, C08F 4654, C08F 4651

Patent

active

052470318

ABSTRACT:
A catalyst component (X") obtained by treating an olefin polymerization catalyst (X) formed from (A) a solid titanium catalyst component comprising magnesium, titanium, halogen and an electron donor as essential ingredients, (B) an organoaluminum compound catalyst component, and as required, (C) an electron donor with an alpha-olefin by preliminarily polymerizing the alpha-olefin in an amount of 0.1 to 500 g per gram of the solid titanium catalyst component (A) in the presence of said catalyst (X), and contacting the treated catalyst (X') with at least 0.1 mole, per gram-atom of titanium in the treated catalyst (X'), of oxygen. A process for producing the olefin polymerization catalyst component. A catalyst (Y) for olefin polymerization formed from [I] the above catalyst component (X"), [II] an organoaluminum compound catalyst component and as required [III] an electron donor. Also provided is a process for polymerizing olefins in the presence of the olefin polymerization catalyst (Y).

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patent: 4952649 (1990-08-01), Kioka et al.
patent: 4990479 (1991-02-01), Ishimaru et al.
patent: 5028671 (1991-07-01), Kioka et al.

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