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Title:
ANTHRAQUINONE COMPOUND, LIQUID CRYSTAL COMPOSITION CONTAINING SAID COMPOUND, AND DIMMING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2023/100848
Kind Code:
A1
Abstract:
The present invention is an anthraquinone compound represented by formula (1) (in the formula, R1 represents a hydrogen atom, a straight chain or branched chain alkyl group having a carbon count of 1-12, or a straight chain or branched chain alkoxy group having a carbon count of 1-12. R2 represents a hydrogen atom, a straight chain or branched chain alkyl group having a carbon count of 1-8, or a straight chain or branched chain alkoxy group having a carbon count of 1-8). R2 may be a straight chain or branched chain alkyl group having a carbon count of 1-8. R1 may be a straight chain or branched chain alkoxy group having a carbon count of 1-8, or may be a straight chain or branched chain alkyl group having a carbon count of 1-4. The present invention also relates to a dimming liquid crystal composition containing this anthraquinone compound and a liquid crystal material. The present invention also relates to a dimming element obtained by sandwiching the dimming liquid crystal composition or a photocured product thereof between a pair of substrates disposed facing each other, at least one among which is a transparent substrate having a transparent electrode.

Inventors:
OGAWA KANAE (JP)
OHTANI KOHEI (JP)
SHIRAISHI MASAKAZU (JP)
MUTO HITOMI (JP)
SUZUKI SAORI (JP)
Application Number:
PCT/JP2022/043896
Publication Date:
June 08, 2023
Filing Date:
November 29, 2022
Export Citation:
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Assignee:
NIPPON KAYAKU KK (JP)
International Classes:
C07C323/38; C09B1/58; C09K19/12; C09K19/60
Domestic Patent References:
WO2022158493A12022-07-28
WO2022220212A12022-10-20
Foreign References:
JPS6372759A1988-04-02
JPS6372760A1988-04-02
JP2000336366A2000-12-05
US4126626A1978-11-21
JP2009108295A2009-05-21
JP2003192664A2003-07-09
Other References:
"Liquid Crystal Device Handbook", 1989, NIKKAN KOGYO SHIMBUNSHA, pages: 154 - 192
Attorney, Agent or Firm:
ASAMURA IP P.C. (JP)
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