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. 10, 2013
Filed:
Jul. 01, 2005
Applicants:
Junji Momoda, Tokuyama, JP;
Takayoshi Kawasaki, Tokuyama, JP;
Toshiaki Ohtani, Tokuyama, JP;
Inventors:
Assignee:
Tokuyama Corporation, Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 220/28 (2006.01); C08F 220/32 (2006.01); C08F 220/12 (2006.01); C08F 220/14 (2006.01); C08K 5/06 (2006.01); C08L 33/08 (2006.01); C08L 33/10 (2006.01); C08L 33/14 (2006.01); C08L 33/16 (2006.01); C09K 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A photochromic cured product exhibiting favorable photochromic properties such as a high color density and a large fading rate, and excellent base member properties such as a high hardness, a high heat resistance and a high impact resistance. A curable composition contains a polymerizable monomer which exhibits the L-scale Rockwell hardness of not larger than 40, a bifunctional polymerizable monomer which exhibits the L-scale Rockwell hardness of not smaller than 60, a polyfunctional polymerizable monomer which exhibits the L-scale Rockwell hardness of not smaller than 60, and a photochromic compound.