ANTHRAQUINONE COMPOUND, LIQUID CRYSTAL COMPOSITION FOR DIMMING INCLUDING SAID COMPOUND, AND DIMMING ELEMENT

• Main Authors: SUZUKI Saori, OHTANI Kohei, MUTO Hitomi, YOSHIMOTO Takashi
• Format: Patent
• Language: English; French; Japanese
• Published: 30.12.2021
• Subjects: ADHESIVES; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FREQUENCY-CHANGING; LAKES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The present invention relates to an anthraquinone compound represented by formula (1) (in formula (1), R1 represents a C1-9 alkyl group and R2 represents a C1-8 alkyl group.); a yellow dichroic pigment that includes this compound; a liquid crystal composition for dimming that contains this yellow dichroic pigment and a liquid crystal material; and a dimming element that uses this composition. La présente invention concerne un composé d'anthraquinone représenté par la formule (1) (dans la formule (1), R1 représente un groupe alkyle en C1-9 et R2 représente un groupe alkyle en C1-8) ; un pigment dichroïque jaune qui comprend ledit composé ; une composition de cristaux liquides pour gradation qui contient ledit pigment dichroïque jaune et un matériau de cristaux liquides ; et un élément de gradation qui utilise ladite composition. 本発明は、下記式（１）（式（１）中、Ｒ１は炭素数１乃至９のアルキル基を、Ｒ２は炭素数１乃至８のアルキル基をそれぞれ表す。）で表されるアントラキノン化合物、この化合物を含む黄色二色性色素、この黄色二色性色素及び液晶材料を含有する調光用液晶組成物、ならびにこの組成物を用いた調光素子に関する。