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:
Jul. 14, 1998
Filed:
Aug. 21, 1995
Hiroyuki Shimizu, Tokyo, JP;
Akira Sano, Tokyo, JP;
Kazuo Matsuura, Yokohama, JP;
Yuuji Washio, Niigata-ken, JP;
Nippon Oil Co., Ltd., Tokyo, JP;
Mizusawa Industrial, Tokyo, JP;
Abstract
A novel olefin polymerization catalyst is obtained by contacting the following components (1) to (5) with one another: (1) a compound represented by the general formula Me.sup.1 R.sup.1.sub.p (OR.sup.2).sub.q X.sup.1.sub.4-p-q, (2) a compound represented by the general formula Me.sup.2 R.sup.3.sub.m (OR.sup.4).sub.n X.sup.2.sub.z-m-n, (3) an organocyclic compound having conjugated double bonds; (4) a modified organoaluminum compound having Al--O--Al bond(s); and (5) a silicon oxide and/or an aluminum oxide both having characteristic average particle diameter, specific surface area, volume of pores ranging in pore radius from 18 to 1,000 Angstroms, apparent specific gravity not lower than 0.32, and proportion of 50 .mu.m or smaller particles.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile