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:
May. 18, 2021
Filed:
Dec. 15, 2016
Eneos Corporation, Tokyo, JP;
Tatsuo Yamaguchi, Tokyo, JP;
Koichi Sato, Tokyo, JP;
Tatsuya Chiba, Tokyo, JP;
Teruhisa Kuroki, Tokyo, JP;
ENEOS Corporation, Tokyo, JP;
Abstract
Provided is a method for producing a butene polymer, comprising: a polymerization step of performing polymerization reaction by contacting a raw material component comprising 20% by mass or more of isobutene with a Lewis acid catalyst; and a distillation step of subjecting a solution to be treated containing a reaction product of the polymerization reaction and a butene oligomer added to the reaction product to distillation treatment to obtain the butene polymer, wherein an amount of the butene oligomer added is 25 parts by mass or larger with respect to 100 parts by mass of the reaction product.