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.:
Date of Patent:
Aug. 06, 1985
Filed:
Jul. 21, 1983
Applicant:
Inventors:
Akihiro Sato, Chibaken, JP;
Kazutsune Kikuta, Ichiharashi, JP;
Toshihiro Uwai, Ichiharashi, JP;
Kenji Matsuda, Ichiharashi, JP;
Nobutaka Hattori, Chibashi, JP;
Assignee:
Chisso Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526114 ; 502108 ; 502121 ; 502123 ; 502125 ; 502126 ; 502127 ; 526 65 ; 526116 ; 526119 ; 526122 ; 526127 ; 526139 ; 526141 ; 526142 ; 526348 ; 526351 ; 526352 ; 5263486 ; 526901 ; 526902 ; 526904 ;
Abstract
A process for producing .alpha.-olefin polymers having high crystallinity and good particle form, with a high yield is provided. The polymerization therefor is carried out in the presence of a preactivated catalyst suitable particularly to gas phase polymerization or gas phase polymerization following slurry or bulk polymerization. The catalyst is prepared by reacting a reduction solid prepared by reducing TiCl.sub.4 with an organoaluminum compound, with an electron donor and an electron acceptor to obtain a solid product, and