QUINOLINE-4-CARBOXYLIC ACID DERIVATIVE, AND COLORATING AGENT IN PRESSURE-SENSITIVE AND THERMOSENSITIVE RECORDING MATERIAL COMPRISING SAME

摘要

The quinoline-4-carboxylic acid derivatives have the general formula I …… in which one of the radicals… R<1>, R<2> and R<3> represents hydrogen, and the other two, independently of one another, represent hydrogen, fluorine, chlorine, bromine, linear and branched C1-C5-alkyl, hydroxyl, C1-C10-alkoxy, which may also be interrupted by 1 or 2 oxygen atoms in the alkyl, or represents …… in which… R<7> denotes hydrogen, methyl or ethyl and… R<8> denotes C1-C4-alkanoyl, benzoyl, p-chlorobenzoyl, C1-C6-alkyl, benzyl or p-chlorobenzyl, or… R<1> and R<2> together denote a fused-on benzene ring,… R<2> and R<3> together denote unsubstituted or C1- to C4-alkyl-substituted methylenedioxy or ethylenedioxy,… R<4> denotes hydroxyl, C1-C10-alkoxy, which may be interrupted by 1 to 4 oxygen atoms, or denotes unsubstituted or chlorine-substituted phenyl-C1-C2-alkoxy,… R<5> denotes hydroxyl or C1-C10-alkoxy, where R<4> and R<5>, if they are in the ortho position, together can also be methylenedioxy or 1,2-ethylenedioxy,… R<6> denotes hydrogen, hydroxyl, methoxy, ethoxy, chlorine, fluorine or C1-C4-alkyl and… X denotes C1-C20-alkoxy, benzyloxy, p-chlorobenzyloxy, phenylethyloxy, cyclopentoxy or cyclohexoxy or …… in which… R<9> denotes hydrogen, methyl or ethyl and… R<1><0> denotes hydrogen, C1-C20-alkyl, unsubstituted phenyl or phenyl which is mono- or disubstituted by chlorine, methoxy or methyl, or denotes a radical of the formula …… in which… R<1> to R<6> have the abovementioned meaning and… Z is oxygen or >N-R<9> and… R<1><3> denotes linear or branched C2-C10-alkylene, which may be interrupted by up to 4 oxygen atoms, or denotes 1,2-, 1,3- or 1,4-xylylene,… and are used as colour formers for pressure- and heat-sensitive recording materials.