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:
Feb. 19, 2019
Filed:
Jul. 15, 2015
Applicant:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Inventors:
Yoshihiko Nishimori, Tokyo, JP;
Kazuya Zenyoji, Tokyo, JP;
Rie Sakata, Tokyo, JP;
Teruo Kamura, Tokyo, JP;
Assignee:
MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/04 (2006.01); C08G 75/04 (2016.01); C07C 319/28 (2006.01); C07C 321/10 (2006.01); C07C 321/14 (2006.01);
U.S. Cl.
CPC ...
C07C 319/28 (2013.01); C07C 321/10 (2013.01); C07C 321/14 (2013.01); C08G 75/04 (2013.01); G02B 1/04 (2013.01);
Abstract
The present invention provides a polythiol composition containing, as the main component, a polythiol compound (a) having two or more mercapto groups, and containing 0.5% by mass or less of a nitrogen-containing compound (b) in which at least one mercapto group in the polythiol compound (a) is substituted with a group represented by formula (1).