Patent ID: 6080789
Filing Date: 2000-06-27
Classification: A01N

Abstract:
A method for disinfecting a substrate with a hard water tolerant disinfecting composition, said method comprising contacting said substrate with biocidal effective amount of said composition comprising(a) at least one quaterinary ammonium compound selected from the group consisting of a quaternary ammonium carbonate, a quaternary ammonium bicarbonate, or a combination thereof;(b) an aqueous solvent comprising hard water of at least 600 ppm of water hardness and optionally, propylene glycol; and(c) a surfactant, wherein said quaternary ammonium carbonate has the formula ##STR4## and said quaternary ammomium bicarbonate has the formula ##STR5## and wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently selected from the group consisting of C.sub.8 -C.sub.12 alkyl groups.