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. 26, 2023
Filed:
Jul. 18, 2019
Tokuyama Corporation, Shunan, JP;
Takao Noguchi, Tsukuba, JP;
Junji Takenaka, Tsukuba, JP;
Junji Momoda, Tsukuba, JP;
Takayoshi Kawasaki, Tsukuba, JP;
Yasutomo Shimizu, Tsukuba, JP;
Masayuki Miyazaki, Tsukuba, JP;
TOKUYAMA CORPORATION, Shunan, JP;
Abstract
The present invention relates to a photochromic compound including a polyvalent residue on which at least one group having a photochromic moiety is substituted, and at least one long-chain group not containing a photochromic moiety and having a molecular weight of 300 or more is further substituted; and a curable composition containing the same. In accordance with the present invention, it is possible to provide a photochromic compound which has high solubility in a polymerizable compound serving as a matrix while retaining high photochromic characteristics and is hardly affected by the matrix; and a curable composition containing the same.