Title:
PHOTOCHROMIC CYCLIC COMPOUND AND CURABLE COMPOSITION CONTAINING SAID PHOTOCHROMIC CYCLIC COMPOUND
Document Type and Number:
WIPO Patent Application WO/2021/167027
Kind Code:
A1
Abstract:
This photochromic cyclic compound is represented by formula (1). In the formula, L is a divalent bridging group and PC is a divalent T-type photochromic base structure group including a naphthopyran structure, one end of the bridging group L having been bonded at least to the 3-position of the naphthopyran structure.
Inventors:
MIYAZAKI MASAYUKI (JP)
TAKENAKA JUNJI (JP)
MOMODA JUNJI (JP)
VENU SRINIVAS (JP)
MORI KATSUHIRO (JP)
TAKENAKA JUNJI (JP)
MOMODA JUNJI (JP)
VENU SRINIVAS (JP)
MORI KATSUHIRO (JP)
Application Number:
PCT/JP2021/006218
Publication Date:
August 26, 2021
Filing Date:
February 18, 2021
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
International Classes:
C09K9/02; C07D493/10; C07F7/18; C08K5/159; C08K5/3442; C08K5/5435; C08L101/00; G02B1/10
Domestic Patent References:
| WO2019009230A1 | 2019-01-10 | |||
| WO2016143910A1 | 2016-09-15 | |||
| WO2014136919A1 | 2014-09-12 | |||
| WO2001060881A2 | 2001-08-23 | |||
| WO2005028465A1 | 2005-03-31 | |||
| WO2018235771A1 | 2018-12-27 |
Foreign References:
| JPS6366178A | 1988-03-24 | |||
| JPH08217985A | 1996-08-27 | |||
| JPH08291285A | 1996-11-05 | |||
| JPH06199827A | 1994-07-19 | |||
| JPH04112885A | 1992-04-14 | |||
| JPS5246079A | 1977-04-12 | |||
| JP2018062496A | 2018-04-19 |
Other References:
COELHO, PAULO J. ET AL.: "The effect of a sulphur bridge on the photochromic properties of indeno-fused naphthopyrans", TETRAHEDRON, vol. 60, no. 11, 2004, pages 2593 - 2599, XP004492590, DOI: 10.1016/j.tet.2004.01.034
See also references of EP 4108735A4
See also references of EP 4108735A4
Attorney, Agent or Firm:
ONO, Hisazumi et al. (JP)
Download PDF: