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:
Sep. 25, 2018
Filed:
Feb. 05, 2015
Applicant:
Mitsui Chemicals, Inc., Minato-ku, Tokyo, JP;
Inventors:
Hidetaka Tsukada, Omuta, JP;
Shinsuke Ito, Omuta, JP;
Naoyuki Kakinuma, Omuta, JP;
Kenichi Goto, Chiba, JP;
Toshihiko Nakagawa, Ichihara, JP;
Satoshi Yamasaki, Chiba, JP;
Assignee:
MITSUI CHEMICALS, INC., Minato-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/72 (2006.01); C08G 18/73 (2006.01); C08G 18/38 (2006.01); G02B 1/04 (2006.01); B29C 45/00 (2006.01); B29D 11/00 (2006.01); C08G 18/75 (2006.01); C08J 5/00 (2006.01); C08G 18/24 (2006.01); B29L 11/00 (2006.01);
U.S. Cl.
CPC ...
C08G 18/722 (2013.01); B29C 45/0001 (2013.01); B29C 45/0053 (2013.01); B29D 11/00009 (2013.01); C08G 18/244 (2013.01); C08G 18/3876 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C08G 18/758 (2013.01); C08J 5/00 (2013.01); G02B 1/041 (2013.01); B29L 2011/0016 (2013.01); C08J 2375/04 (2013.01);
Abstract
Disclosed is a polymerizable composition for an optical material containing polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2); and polythiol (b) having a di- or higher functional thiol group, in which the modified aliphatic polyisocyanate (a2) is contained in the polyisocyanate (a) in the amount of less than or equal to 60 weight %.