THREE-EFFECTOR TYPE BLUE REACTIVE DYE

摘要

PURPOSE: A three-effector type blue reactive dye has one monochlorotriazine and two vinyl sulfonyl groups in one dye molecule to provide high dyeability and reliability without generating dye wastewater. CONSTITUTION: A tree-effector type blue reactive dye is represented by the formula 1: wherein Z and Z' are independently OSO3M or OCOCH3, at least either of Z or Z' being OCOCH3; n is an integer from 0 to 2; and M is an alkali metal atom. The reactive dye is prepared by (a) diazotizating of a compound having the formula 2 and coupling the diazotized compound with an 1-naphthol-8-amino-3,6-disulfonic acid neutral solution; separating condensation reaction of a phenylenediamine sulfonic neutral solution and cyanuric chloride at a temperature in the range from 0 to 5°C; (c) after diazotization of the condensate of the step (b), adding the reaction solution of the step (a) at a temperature in the range from 0 to 5°C and performing a coupling reaction at a pH value of less than 7; and (c) adding aminophenyl-beta-acetoxyethylsulfon or aminophenyl-beta-sulfatoethylsulfon to the coupling solution of the step (c) at a temperature in the range from 35 to 45°C.