Patent ID: 6429220
Filing Date: 2002-08-06
Classification: A01N

Abstract:
An antimicrobial composition consisting essentially of (i) 0.5 to 8% by weight of an isothiazolone compound selected from the group consisting of a compound of the following formula [1] and a compound of the following formula [2], and (ii) an aminocarboxylic acid of the following formula [3], the aminocarboxylic acid being in an amount of moles of 0.1 to 50 times the amount of moles of the isothiazolone compound, the isothiazolone compound and the aminocarboxylic acid both being dissolved in a solvent of water and optionally a hydrophilic solvent; wherein R1 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group or an aralkyl group, X and Y each represents a hydrogen atom or a halogen atom or form a benzene ring in combination with carbon atoms at the 4- and 5-positions of the isothiazolone compound, M represents a cation of an alkali metal, an alkaline earth metal, a heavy metal or an amine, Z represents an anion forming, in combination with the cation represented by M, a compound having a sufficient solubility to form a complex compound, a represents 1 or 2 and n represents an integer required for the anion represented by Z to satisfy a valence of the cation represented by M; wherein R2 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms unsubstituted or substituted with a carboxyl group, R3 represents a linear or branched alkylene group having 1 to 5 carbon atoms, R4 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms unsubstituted or substituted with a carboxyl group, a carbamoyl group, a hydroxyl group, a phenyl group, a hydrophenyl group, an ureido group, a methylthio group or a 4-imidazolyl group, R2 and R4 form a heterocyclic group unsubstituted or substituted with a hydroxyl group or an oxo group in combination with Nâ€”(R3)bâ€”C and b represents 0 or 1.