Abstract: A method for increasing the effectiveness of a biocide is described. In the method, at least one biocide and at least one diethanolamide are applied to a substrate or aqueous system subject to the growth of microorganisms. The diethanolamide is applied in an amount effective to increase the biocidal activity of the biocide. Biocidal compositions are described where the biocide and the diethanolamide are present in a combined amount effective to control the growth of at least one microorganism. Methods for controlling the growth of microorganisms on various substrates and in various aqueous systems are also described. The combination of the biocide and the diethanolamide is particularly useful as a biocide in the leather industry, the lumber industry, the papermaking industry, the textile industry, the agricultural industry, and the coating industry, as well as in industrial process waters.

Abstract: Compositions comprising a mixture of 2-(thiocyanomethylthio)benzothiazole and methylene-bis(thiocyanate) with dimethylamide of a carboxylic acid are disclosed which are synergistically effective compared to the respective components alone in controlling the growth of microorganisms in or on a product, material, or medium. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions comprising a compound of formula I ##STR1## where R and R' are independently selected from hydrogen and alkyl of 1 to 4 carbon atoms, R" is a moiety selected from the group consisting of (a) hydrogen, (b) a halogen atom selected from the group consisting of F, Cl, Br, and I, and (c) a nitro group, or the hydrochloride salt of said compound; and at least one preservative are disclosed which are synergistically effective compared to the respective components alone in controlling and/or reducing the growth of microorganisms in or on a material or medium. Methods to control and/or reduce the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions for controlling the growth of microorganisms in or on a product, material or medium comprising synergistically effective amounts of methylene-bis(thiocyanate) and at least one organic acid, its salt or ester are disclosed. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions for controlling the growth of microorganisms in or on a product, material or medium comprising synergistically effective amounts of halogenated acetophenones, such as 2-bromo-4-hydroxyacetophenone, and at least one organic acid, its salt or ester are disclosed. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: An emulsifier composition containing 1,4-bis(bromoacetoxy)-2-butene (BBAB) is disclosed which has the ability to disperse and/or dissolve uniformly in aqueous systems thereby effectively controlling the growth of microorganisms. The composition contains BBAB and a nonionic emulsifier.A method for inhibiting the growth of microorganisms with this composition in an amount effective to control the growth of microorganisms is also disclosed.

Abstract: Compositions comprising a compound of formula I ##STR1## where R and R' are independently selected from hydrogen and alkyl of 1 to 4 carbon atoms, R" is a moiety selected from the group consisting of (a) hydrogen, (b) a halogen atom selected from the group consisting of F, Cl, Br, and I, and (c) a nitro group, or the hydrochloride salt of said compound; and at least one preservative are disclosed which are synergistically effective compared to the respective components alone in controlling and/or reducing the growth of microorganisms in or on a material or medium. Methods to control and/or reduce the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions for controlling the growth of microorganisms in or on a product, material or medium comprising synergistically effective amounts of halogenated acetophenones, such as 2-bromo-4-hydroxyacetophenone, and at least one organic acid, its salt or ester are disclosed. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions for controlling the growth of microorganisms in or on a product, material or medium comprising synergistically effective amounts of methylene-bis(thiocyanate) and at least one organic acid, its salt or ester are disclosed. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions for controlling the growth of microorganisms in or on a product, material or medium comprising synergistically effective amounts of methylene-bis(thiocyanate) and at least one organic acid, its salt or ester are disclosed. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions for controlling the growth of microorganisms in or on a product, material or medium comprising synergistically effective amounts of halogenated acetophenones, such as 2-bromo-4-hydroxyacetophenone, and at least one organic acid, its salt or ester are disclosed. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions for controlling the growth of microorganisms in on a product, material or medium comprising synergistically effective amounts of methylene-bis(thiocyanate) and at least one organic acid, its salt or ester are disclosed. Methods to control growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.

Abstract: Compositions for controlling the growth of microorganisms in or on a product, material or medium comprising synergistically effective amounts of halogenated acetophenones, such as 2-bromo-4-hydroxyacetophenone, and at least one organic acid, its salt or ester are disclosed. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.