Abstract: A method of controlling the fouling potential of macroinvertebrates, such as mollusks, in aqueous systems which comprises adding to the system an effective controlling amount of a water-soluble alkyl guanidine salt wherein the alkyl group has from about 8 to about 18 carbons.

Abstract: A method of controlling the fouling potential of macroinvertebrates, such as mollusks, in aqueous systems which comprises adding to the system an effective controlling amount of a water-soluble quaternary ammonium salt having the following structure: ##STR1## wherein R.sub.1 is an alkyl group having about 6 to 24 carbons; R.sub.2 is an alkyl, aryl or arylalkyl group having about 6 to 24 carbons; R.sub.3 and R.sub.4 are alkyl groups having about 1 to 4 carbons; and X is chloride, bromide, sulfate, bisulfate, nitrate or acetate. Preferably, the quaternary ammonium salt is water-soluble alkyl dimethyl benzyl ammonium chloride having an alkyl chain length from C.sub.6 to C.sub.24 and, most preferably, it has an alkyl distribution of about 40% C.sub.12, 50% C.sub.14 and 10% C.sub.16.

Abstract: A method of controlling the fouling potential of macroinvertebrates, such as mollusks, in aqueous systems which comprises adding to the system an effective controlling amount of a water-soluble alkyl guanidine salt wherein the alkyl group has from about 8 to about 18 carbons.

Abstract: Bactericidal composition and method for inhibiting and controlling the growth of the capsulated, facultative bacterium, Klebsiella pneumoniae, are disclosed. The composition comprises an amount, effective for the intended purpose, of n-alkyl dimethyl benzyl ammonium chloride and n-dodecylguanidine or water soluble salt thereof. The method comprises administering between about 0.1 to about 200 parts of this combined treatment (based on one million parts of the desired aqueous system) to the particular water containing system for which treatment is desired.

Abstract: The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of wood pulp, in the manufacture of paper, in cooling water systems, and in effluent water treatment. The novel processes and compositions of the present invention are processes of mixtures which show unexpected synergistic activity against microorganisms, including bacteria, (in particular Aerobacter aerogenes) fungi, and algae, which produce slime in aqueous systems which are objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising a combination 1,3-dichloroacetone oxime acetate and polyoxyethylene sorbitol hexaoleate having an average of 40 oxyethylene groups.

Abstract: The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of paper and pulp paper, in cooling water systems and in effluent water treatment. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi and algae, which produce, in aqueous systems or bodies, slime which is objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising .alpha.-Bromo-p-methylacetophenone and 1,3-dichloroacetone oxime acetate.

Abstract: The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of paper and pulp paper, in cooling water systems and in effluent water treatment. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi and algae, which produce, in aqueous systems or bodies, slime which is objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising .alpha.-Bromo-p-methylacetophenone and Bis (trichloromethyl) sulfone.

Abstract: The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of paper, in cooling water systems and in effluent water treatment. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi, and algae, which produce slime in aqueous systems or bodies which are objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising a combination of 1,3-dichloroacetone oxime acetate and beta-bromo-beta-nitrostyrene.

Abstract: The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of pulp paper, in the manufacture of paper, in cooling water systems and in effluent water treatment. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi, and algae, which produce slime in aqueous systems or bodies which are objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising a combination 1,3-dichloroacetone oxime acetate and a mixture of 75% of 5-chloro-2-methyl-4-isothiazolin-3-one calcium chloride and 25% of 2-methyl-4-isothiazolin-3-one calcium chloride.

Abstract: The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of pulp paper, in the manufacture of paper, in cooling water systems and in effluent water treatment. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi, and algae, which produce slime in aqueous systems or bodies which are objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising a combination 1,3-dichloroacetone oxime acetate and n-alkyl (C.sub.12 40%, C.sub.14 50%, C.sub.16 10%) dimethyl benzyl ammonium chloride.