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. 28, 2016
Filed:
Apr. 12, 2012
Applicants:
Toshimitsu Hiraren, Ibaraki, JP;
Katsuhiro Mori, Ibaraki, JP;
Yasutomo Shimizu, Ibaraki, JP;
Inventors:
Assignee:
Tokuyama Corporation, Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/02 (2006.01); C08G 18/42 (2006.01); C08G 18/44 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C08G 18/79 (2006.01); C08K 5/00 (2006.01); C08K 5/1545 (2006.01); C09K 9/02 (2006.01); G02B 1/04 (2006.01); G02B 5/23 (2006.01); G02F 1/153 (2006.01);
U.S. Cl.
CPC ...
G02F 1/1533 (2013.01); C08G 18/022 (2013.01); C08G 18/4277 (2013.01); C08G 18/44 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C08G 18/792 (2013.01); C08K 5/1545 (2013.01); C09K 9/02 (2013.01); G02B 1/04 (2013.01); G02B 5/23 (2013.01); C08K 5/0041 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1033 (2013.01); C09K 2211/1088 (2013.01);
Abstract
Provided is a photochromic composition which can function as an adhesive layer for bonding optical sheets made from a polycarbonate resin or the like and a laminated article using said composition exhibits excellent tight adhesion, heat resistance and photochromic properties. In particular, provided is a photochromic composition which can prevent an elution of the composition from the optical sheets when embedding and polymerizing in a polymerizable monomer. The photochromic composition comprises a polyurethane resin (A) having an isocyanurate structure and a photochromic compound (B).