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:
Nov. 12, 2019
Filed:
May. 18, 2016
Applicant:
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Inventors:
Yusuke Izawa, Mie, JP;
Masaru Utsunomiya, Tokyo, JP;
Norikazu Konishi, Mie, JP;
Kouta Tanaka, Mie, JP;
Takayuki Suzuki, Mie, JP;
Shinichirou Matsuzono, Mie, JP;
Assignee:
MITSUBISHI CHEMICAL CORPORATION, Chiyoda-ku, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 29/94 (2006.01); C08K 5/20 (2006.01); C08G 63/183 (2006.01); C07D 307/08 (2006.01); C08G 63/78 (2006.01);
U.S. Cl.
CPC ...
C07C 29/94 (2013.01); C07D 307/08 (2013.01); C08G 63/183 (2013.01); C08G 63/78 (2013.01); C08K 5/20 (2013.01);
Abstract
A 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and containing 2-pyrrolidone or N-methylpyrrolidone in a concentration, as converted into a nitrogen atom, of from 1.0 to 25 ppm by weight and methods of use thereof.