PURPOSE: Provided is an acidic antibacterial dye which not only realizes various colors but also has antibacterial effect and thus is useful for the production of antibacterial fibers capable of preventing inflammatory diseases and bad odors.CONSTITUTION: The acidic antibacterial dye comprises a sulfonamide-based antibacterial agent to which a dye intermediate is coupled via a diazo-coupling reaction.The acidic antibacterial dye is represented by the following formula 1 wherein A is 3-methyl-1-1...

PURPOSE: To microcapsule a substance which does not show an affinity for gelatin by using the substance recrystallized from an aq. soln. of a high polymer contg. a dissociative group as a core substance.CONSTITUTION: A core substance such as carbochon sulfadiazine and sulfamerazine are dissolved in a good solvent to obtain a soln. as concentrated as possible in microcapsuling the core substance which does not show an affinity for gelatin by using the gelatin. And the core substance is recrystall...

PURPOSE: To microcapsule a substance which does not show an affinity for gelatin by using the substance recrystallized from an aq. soln. of a high polymer contg. a dissociative group as a core substance.CONSTITUTION: A core substance such as carbochon sulfadiazine and sulfamerazine are dissolved in a good solvent to obtain a soln. as concentrated as possible in microcapsuling the core substance which does not show an affinity for gelatin by using the gelatin. And the core substance is recrystall...