25-04-2019 дата публикации
Номер: US20190119501A1
An organic colorant complex with the following general structure: 1. An organic colorant complex with the following general structure (I):{'br': None, 'sub': n', 'm', 'x', 'y, 'AB(DE)TQ\u2003\u2003(I)'}whereinA is an organic chromophore selected from an azo, phthalocyanine or anthraquinone chromophore group;B is an electrophilic reactive group selected from monochlorotriazine, monofluorotriazine, dichlorotriazine, sulfatoethyl sulfone, vinyl sulfone, 2,3-dichloroquinoxaline, and 2,4-difluor-5-chloropyrimidine groups and is covalently bonded to A directly or through a linking group;D is a nucleophilic linking group covalently bonding B and E, selected from NR, O, S, and 4-oxyanilino (—HN-Ph-O—); wherein R is H, alkyl, aryl or E;E is an organic moiety or an end group;T is a cationic quaternary ammonium group covalently linked to A;Q is a counterion, bonded to the organic chromophore through ionic interaction with T; andn, m, x, and y each independently are integers of 1-10.2. A method for preparing the organic colorant complex of claim 1 , comprising the steps of{'sub': n', 'x', 'x', 'n', 'm', 'x', 'x, '(a) reacting, under basic conditions, a reactive dye of the formula ABTMwith a nucleophile organic compound DE to form a compound of the formula AB(DE)TM,'}{'sub': n', 'm', 'x', 'x', 'n', 'm', 'x', 'y, 'sup': +', '−, '(b) reacting the compound AB(DE)TMwith an organic cationic compound, QZ wherein Q is a cation and Z is an anion to form the organic colorant complex of the formula AB(DE)TQand'}(c) purifying the colorant complex to remove inorganic salts.or(a′) covalently bonding reactive dye AB to a nucleophile DE by heating an aqueous or organic composition of nucleophile and the dye to a temperature of at least 30° C. at a pH of the reaction composition which avoids protonating amine if present in the reaction mixture{'sub': x', 'y, '(b′) reacting the formed anionic colorant from (a′) with a cationic compound TQto form the desired colorant complex, and'}(c′) purifying ...
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