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Title:
CHROMENE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2013/141143
Kind Code:
A1
Abstract:
Provided is a novel photochromic compound with favorable durability wherein the color during coloring is an intermediate color (exhibits double peak properties), color intensity is high, and color fading is rapid. For example, a chromene compound in which a group having a sulfur atom where the sulfur atom bonds to a seventh position carbon atom (a methylthio group in formula (20)) is introduced to the seventh position carbon atom, as in the compound expressed by formula (20), the compound having high color intensity, a rapid color fading rate, and favorable durability.

Inventors:
IZUMI Shinobu (Mikage-cho,Shunan-sh, Yamaguchi 53, 〒7450053, JP)
SHIMIZU Yasutomo (1-1 Mikage-cho, Shunan-sh, Yamaguchi 53, 〒7450053, JP)
MOMODA Junji (1-1 Mikage-cho, Shunan-sh, Yamaguchi 53, 〒7450053, JP)
Application Number:
JP2013/057330
Publication Date:
September 26, 2013
Filing Date:
March 11, 2013
Export Citation:
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Assignee:
TOKUYAMA CORPORATION (1-1 Mikage-cho, Shunan-shi Yamaguchi, 53, 〒7450053, JP)
International Classes:
C07D311/78; C07C323/21; C07D265/30; C07D277/60; C07D279/14; C07D327/04; C07D497/04; C07D513/04; C09K9/02
Domestic Patent References:
WO2007086532A12007-08-02
WO2002090342A12002-11-14
WO2011016582A12011-02-10
WO2002090342A12002-11-14
WO2007086532A12007-08-02
Other References:
See also references of EP 2829537A4
JOURNAL OF HETEROCYCLIC CHEMISTRY, vol. 19, 1982, pages 135
TETRAHEDRON LETTERS, vol. 39, 1998, pages 4657
Attorney, Agent or Firm:
OHSHIMA Masataka (OHSHIMA PATENT OFFICE, BN Gyoen Building, 17-11, Shinjuku 1-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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