Title:
CHROMENE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2011/078030
Kind Code:
A1
Abstract:
Provided is a novel, durable photochromic compound that exhibits a medium color tone when in a colored state, low initial coloration, high color density, and a high fading speed. Said photochromic compound is a chromene compound, the basic skeleton of which is an indeno(2,1-f)naphtho(1,2-b)pyran structure represented by structural formula (1). One of the carbon atoms between the fifth carbon atom and the twelfth carbon in the pyran structure, inclusive, is connected via a carbon-carbon bond to a substituent which is a condensed polycyclic group wherein an alicyclic ring, aliphatic heterocyclic ring, aromatic ring, or aromatic heterocyclic ring is condensed with an alicyclic ring or aliphatic heterocyclic ring which has a binding site for the carbon atom in the pyran structure.
More Like This:
Inventors:
TAKAHASHI TOSHIAKI (JP)
TAKENAKA JUNJI (JP)
TAKENAKA JUNJI (JP)
Application Number:
PCT/JP2010/072550
Publication Date:
June 30, 2011
Filing Date:
December 15, 2010
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
TAKAHASHI TOSHIAKI (JP)
TAKENAKA JUNJI (JP)
TAKAHASHI TOSHIAKI (JP)
TAKENAKA JUNJI (JP)
International Classes:
C07D311/94; C07D455/02; C09K9/02; G02B5/23; G02C7/10
Domestic Patent References:
| WO2005028465A1 | 2005-03-31 | |||
| WO2006110221A1 | 2006-10-19 | |||
| WO2006110513A1 | 2006-10-19 | |||
| WO2005090327A1 | 2005-09-29 |
Foreign References:
| JP2005187420A | 2005-07-14 |
Attorney, Agent or Firm:
TAKEZAWA Soichi et al. (JP)
Soichi Takezawa (JP)
Soichi Takezawa (JP)
Download PDF: