Preparation of azo dyes from other azo compounds

CCHEMISTRY METALLURGY C09Paints, dyes C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES MORDANTS LAKES

C09B43/00Preparation of azo dyes from other azo compounds

C09B43/003Cyclisation of azo dyes; Condensation of azo dyes with formation of ring C09B43/006by introduction of hydrocarbon radicals on C-atom of azo dye C09B43/02by sulfonation C09B43/04by nitration C09B43/06by oxidation C09B43/08by reduction C09B43/085by reacting nitro azo dyes with amine or amino azo dye with nitro compounds C09B43/10with formation of a new azo or an azoxy bridge C09B43/11by introducing hydrocarbon radicals or substituted hydrocarbon radicals on primary or secondary amino groups C09B43/12by acylation of amino groups C09B43/124with monocarboxylic acids, carbamic esters of halides, mono- isocyanates, or haloformic acid esters C09B43/1242with heterocyclic monocarboxylic acids C09B43/1245with formation of NHCOOR, NHCOSR or NHCSOR groups by acylation C09B43/1247with formation of NHSO2R or NHSO3H radicals C09B43/128Aliphatic, cycloaliphatic or araliphatic acids C09B43/132having the carboxylic group directly attached to an aromatic carbocyclic ring C09B43/136with polyfunctional acylating agents C09B43/14with phosgene or thiophosgene C09B43/145with polycarboxylic acids C09B43/15with formation of cyclic imides of ortho- or peri- dicarboxylic acids C09B43/155with di- or poly-isocyanates C09B43/16linking amino-azo or cyanuric acid residues C09B43/18by acylation of hydroxyl group or of mercapto group C09B43/20with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters C09B43/202Aliphatic, cycloaliphatic, araliphatic carboxylic acids C09B43/204Heterocyclic monocarboxylic acids C09B43/206with formation of OCXN or OSO2N group C09B43/208with formation of OCXXH or OCXXR and R being hydrocarbon C09B43/22having the carboxylic group directly attached to an aromatic carbocyclic ring C09B43/24with formation of -O-SO2-R or -O-SO3H radicals C09B43/26with polyfunctional acylating agents C09B43/263Polycarboxylic acids C09B43/266Di-or polyisocyanates C09B43/28by etherification of hydroxyl groups C09B43/30by esterification of -COOH or -SO3H groups C09B43/32by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines by reacting keto-groups with amines C09B43/325by reacting sulfonic acids with amines C09B43/34by reacting ortho- or peri-dicarboxylic dyes C09B43/36with amino-anthracene or amino-anthraquinone dyes C09B43/38by reacting two or more ortho-hydroxy naphthoic acid dyes with polyamines C09B43/40by substituting hetero atoms by radicals containing other hetero atoms C09B43/405by substituting radicals containing hetero atoms for -SO2R radicals and R being hydrocarbon C09B43/42by substituting radicals containing hetero atoms for -CN radicals C09B43/44by substituting amine groups for hydroxyl groups or hydroxyl groups for amine groups Desacylation of amino-acyl groups Deaminating