A SYNERGISTIC COMBINATION FOR USE IN CONTROLLING FUNGAL OR BACTERIAL GROWTH IN SYNTHETIC METALWORKING FLUIDS

摘要

A method of controlling fungal or bacterial growth in a synthetic metalworkig fluid comprising the addition to said fluid of (a1) 5-chloro-2-methyl-4-isothiazolin-3-one and (a2) 2-methyl-4-isothiazolin-3-one and (b) an ionene polymer wherein the ratio by weight of the sum of components (a1) and (a2) to component (b) is form 1:99 to 99:1 and wherein the amounts of the components are synergistically effective to control fungal or bacterial growth in said fluid. Compositions containing these three components are also disclosed.