KR920701392A - coloring agent - Google Patents

Abstract

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Description

coloring agent

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Claims (17)

A colorant based on a platelet-shaped material optionally coated with one or more metal oxides, characterized by containing a chiral pearlescent liquid crystalline medium. The colorant of claim 1, wherein the medium is bonded to the surface of the platelet-shaped substrate. The colorant according to claim 1 or 2, wherein the pearlescent liquid crystal medium is a mixture of at least one chiral component and at least one non-chiral component. The colorant according to claim 3, wherein the at least one chiral component is a compound of formula (I) or a chiral steroid ester of formula (II): R ^1- (A ¹ -Z ¹ ) _m -A ² -R ^* (Ⅰ) Wherein R ¹ is R ^* or CN, wherein one or two non-adjacent CH ₂ groups may also be substituted with -O-, -CO-, -0-CO- and / or -CO-O An alkyl radical or alkenyl radical having up to 18 C atoms optionally substituted with at least one halogen atom, and A ¹ and A ² in each case independently of each other a) 1 or 2 non-adjacent CH ₂ groups are -O A 1,4-cyclohexylene group, which may be substituted with a CH ₃ -group with-and / or -S-, b) 1,4-cyclohexenylene, piperidine-1,4-diyl or 1, 4-bicyclo [2,2,2] octylene group, or c) 1 or 2 F-atoms or 1 or 2 CN- or 1 or 2, wherein at least one CH group may also be substituted by N Is a 1,4-phenylene group optionally substituted with ₃ CH ₃ -groups, Z ¹ is -CO-O-, -O-CO, -CH ₂ CH _2- , -CHCN-CN _2- , -CH _{2- CHCN-, -CH = CH-, -OCH 2} -, -CH 2 O-, -CN = N-, -N = CN-, -NO = N-, -N = NO- or a single bond, m 1, 2 or 3, R ^* is a chiral radical providing the optically active compound represented by the general formula (Ⅰ), R ³ is one of the CH ₂ groups -O-, -O-CO- or -CO-O A normal or branched alkyl or alkenyl radical having up to 16 C atoms which may be substituted with-Ster is a saturated or optionally substituted with up to 6 normal or branched alkyl radicals having 1 to 10 C atoms Unsaturated unsaturated 3-yl group. The colorant according to claim 4, wherein R ^* is a chiral radical of the general formula (III): Wherein Q is a single bond, or one or two non-adjacent CH ₂ groups are -CH (CN)-, -CH (F)-, -CH (Cl)-, -O-, -S-,- An alkylene group having 1 to 8 C atoms, which may be substituted with CO—O— or —O—CO, X is H or CH ₃ , Y is F, Cl, Br, CN or CF ₃ , R ⁰ is an alkyl residue different from X, having up to 14 C atoms, in which one or two non-adjacent CH ₂ groups may be substituted with —O—, —CO—O— or —O—CO—. The coloring agent according to claim 3 or 5, wherein the at least one non-chiral compound is a compound of formula (IV): R ^2- (A ³ -Z ² ) _p -A ⁴ -Z ³ -Z ⁵ -R ³ (Ⅳ) Wherein R ² and R ³ in each case may independently be substituted with one or two non-adjacent CH ₂ groups by -O-, -CO-, -O-CO- and / or -CO-O Or an alkyl radical or alkenyl radical having up to 18 C atoms optionally substituted with CN or at least one halogen atom, or one of R ² and R ³ may also be CN or halogen, A ³ , A ⁴ And A ⁵ independently of each other in each occurrence a) one or two non-adjacent CH ₂ groups may also be substituted with —O— and / or —S— and / or a CH ₃ — or CN—group at position 1; 1,4-cyclohexylene group which may be substituted by b) 1,4-cyclohexenylene, piperidine-1,4-diyl or 1,4-bicyclo [2,2,2] octylene Or c) a 1,4-phenylene group optionally substituted with 1 or 2 F atoms or 1 or 2 CH ₃ -or 1 or 2 CN-groups, Z ² and Z ³ are each -CO- O-, -O-CO-, -CH ₂ CH _2- , CHCH-CH ₂ -, -CH ₂ -CHCN-, -CH = CH-, -OCH _2- , -CH ₂ O-, -CH = N-, -N = CH-, -NO = N-, -N = NO- or It is a single bond and p is 0, 1 or 2. The colorant according to any one of claims 1 to 6, wherein the platelet-shaped substrate is mica. 8. A colorant according to claim 7, based on platelet-shaped material coated with one or more metal oxides. The coloring agent according to claim 7 or 8, wherein the coloring agent is coated with at least 1 to 60% by weight of the metals II, III, IV, V and VI. The coloring lacquer composition whose coloring agent is a coloring agent of Claim 1. The coloring paint composition whose coloring agent is a coloring agent of Claim 1. The coloring plastic composition whose colorant is a coloring agent of Claim 1. The colored fiber composition whose colorant is a coloring agent of Claim 1. The colored glass composition whose colorant is the coloring agent of Claim 1. The coloring cosmetic composition whose coloring agent is a coloring agent of Claim 1. The ink composition for coloring printing whose coloring agent is the coloring agent of Claim 1. Hair dye which is a dye of Claim 1. ※ Note: The disclosure is based on the initial application.