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:
Jan. 07, 2020
Filed:
Dec. 16, 2016
Applicant:
Japan Polypropylene Corporation, Chiyoda-ku, JP;
Inventors:
Assignee:
Japan Polypropylene Corporation, Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/659 (2006.01); C08F 4/609 (2006.01); C08F 4/649 (2006.01); C08F 110/06 (2006.01); C08F 4/658 (2006.01); C08F 10/00 (2006.01);
U.S. Cl.
CPC ...
C08F 4/65912 (2013.01); C08F 4/6093 (2013.01); C08F 4/6498 (2013.01); C08F 4/658 (2013.01); C08F 4/65916 (2013.01); C08F 10/00 (2013.01); C08F 110/06 (2013.01);
Abstract
A method for producing a solid catalyst component (Aa) for α-olefin polymerization, which includes: bringing components (A1) to (A4) into contact with one another in an inert solvent; and without washing the contact product with an inert solvent, aging the contact product by keeping for a holding time of 3 days or more and 180 days or less, regarding the time point that all of the components (A1) to (A4) first come into contact, as a starting point.