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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5330949 B1

PDFFull Text
Date of Patent:
Jul. 19, 1994

Filed:

Apr. 26, 1990

Method for producing polyolefin

Applicant:
Inventors:

Hideo Funabashi, Ichihara, JP;

Akira Tanaka, Ichihara, JP;

Rikuo Ohnishi, Ichihara, JP;

Toshikazu Kasahara, Ichihara, JP;

Takashi Yamawaki, Ichihara, JP;

Assignee:

Idemitsu Petrochemical Company, Ltd., Tokyo, JP;

Attorney:

Nikaido, Marmelstein, Murray & Oram

Primary Examiner:

Edward J Smith

Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
502111 ; 502156 ; 502242 ; 502251 ; 502263 ; 502439 ; 502120 ; 502125 ; 526 97 ; 526124 ; 526351 ; 526348 ; 5263486 ; 525268 ;
Abstract

A method for producing a polyolefin is disclosed which comprises polymerizing an .alpha.-olefin in the presence of a catalyst composition comprising (A) a solid catalyst component prepared by contacting (a) a solid component comprising a magnesium alkoxide and/or a magnesium salt of a fatty acid supported on an inorganic oxide composed of at least one member selected from the group consisting of oxides of elements belonging to Groups II, III and IV of the periodic table and/or a composite inorganic oxide containing at least one member selected from the group consisting of oxides of elements belonging to Groups II, III and IV of the periodic table, the inorganic oxide or composite inorganic oxide having a surface hydroxide concentration of 3 .mu.mol/m.sup.2 or less, (b) an electron donating compound and (c) a titanium halide, (B) an organic metal compound, and (C) an electron donating compound. According to the method, a step of removing the catalyst residue: from the polypropylene produced can be eliminated and the products have well balanced mechanical strength such as stiffness and impact strength.

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Funabashi, Hideo. (1994). Method for producing polyolefin (U.S. Patent No. 5330949). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5330949

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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