Method for producing a stereoregular polyolefin

Details Method for producing a stereoregular polyolefin Method for producing a stereoregular polyolefin

1989-12-21

1992-05-12

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502125, 502126, 502127, 526128, 526132, 526351, C08F 4654, C08F 4656, C08F 1004

Patent

active

051129272

ABSTRACT:
A method for producing a stereoregular polyolefin in the presence of a catalyst comprising a transition metal compound and an organometallic compound, wherein a catalyst system is employed which comprises (i), (ii) and (iii): (A) a solid catalyst component obtained by reacting to a uniform solution containing (i) at least one member selected from the group consisting of metallic magnesium and an organic hydroxide compound and an oxygen-containing organic magnesium compound, (ii) a compound of Group IIIB of the Periodic Table, and (iii) an oxygen-containing organic silicon compound, (iv) at least one aluminum halide, to obtain a solid product, and reacting to the solid product, (v) an electron donative compound, and (vi) a titanium halide compound; (B) at least one member selected from the group consisting of organometallic compounds of metals of Groups IA, IIA, IIB, IIIB and IVB of the Periodic Table; and (C) an electron donative compound.

REFERENCES:
patent: 4175170 (1979-11-01), Schweier et al.

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