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:
Jun. 04, 2019
Filed:
Jul. 07, 2015
Applicant:
Mitsui Chemicals, Inc., Minato-ku, Tokyao, JP;
Inventor:
Nobuo Kawato, Kurume, JP;
Assignee:
MITSUI CHEMICALS, INC., Minato-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/04 (2006.01); C08G 18/10 (2006.01); C08G 18/32 (2006.01); C08G 18/38 (2006.01); C08G 18/72 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01);
U.S. Cl.
CPC ...
C08G 18/3876 (2013.01); C08G 18/10 (2013.01); C08G 18/3228 (2013.01); C08G 18/3234 (2013.01); C08G 18/722 (2013.01); C08G 18/724 (2013.01); C08G 18/73 (2013.01); C08G 18/757 (2013.01); C08G 18/758 (2013.01); G02B 1/04 (2013.01); G02B 1/041 (2013.01);
Abstract
Provided is a polymerizable composition for an optical material including (A) an amine having two or more secondary amino groups, (B) an isocyanate having two or more isocyanato groups, and (C) a thiol having three or more mercapto groups, in which the ratio (a/b) of the molar number a of amino groups in the amine (A) with respect to the molar number b of isocyanato groups in the isocyanate (B) is in the range of 0.10 to 0.60.