Abstract: Halogenated 4'-methoxyacetophenones of formula I: ##STR1## wherein X is a halogen; Y is a halogen; and n is 1 or 2 as microbicides for inhibiting the growth of microorganisms in aqueous systems and on surfaces, as well as for inhibiting slime formation in aqueous systems and biocidal compositions containing effective amounts of the halogenated 4'-methoxyacetophenones.

Abstract: A method of protecting plants and seeds thereof which are susceptible to attack by microorganisms. To the plant or seed is applied a compound having the formula ##STR1## wherein R and R' are independently selected from hydrogen and alkyl of 1 to 4 carbon atoms; and 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 the compound. The method disclosed is especially useful for protecting ornamental plants, vegetable plants and cereal crop plants and seeds thereof which are susceptible to attack by microorganisms. A composition containing the compound of formula I for use in protecting plants which are susceptible to attack by microorganisms is also provided.

Abstract: Novel capped polymeric quaternary ammonium compositions formed by reacting ionene type polymers with tertiary amines are useful as microbicides, corrosion inhibitors, debonding agents, flocculants, softeners, plant growth regulators, and demulsifiers.

Abstract: Novel capped polymeric quaternary ammonium compositions formed by reacting ionene type polymers with tertiary amines are useful as microbicides, corrosion inhibitors, debonding agents, flocculants, softeners, plant growth regulators, and demulsifiers.

Abstract: A method of preserving an aqueous system which is susceptible to microbiological degradation. To the system is added a compound having the formula ##STR1## wherein R and R' are independently selected from hydrogen or a methyl group, 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 the compound. The method disclosed is especially useful for preserving aqueous solutions, emulsions, and suspensions which are susceptible to microbiological degradation.

Abstract: Novel capped polymeric quaternary ammonium compositions formed by reacting ionene type polymers with tertiary amines are useful as microbicides, corrosion inhibitors, debonding agents, flocculants, softeners, and demulsifiers.

Abstract: Novel polyquaternary ammonium compounds prepared from N,N'-bis(dialkylaminoalkyl)ureas, hydrochloric acid, epichlorohydrin and tertiary amines are useful as microbicides, corrosion inhibitors, debonding agents, flocculants, softeners, anti-static agents, and demulsifiers.

Abstract: Novel polyquaternary ammonium compounds prepared from N,N'-bis(dialkylaminoalkyl)ureas, hydrochloric acid, epichlorohydrin and tertiary amines are useful as microbicides, corrosion inhibitors, debonding agents, flocculants, softeners, anti-static agents, and demulsifiers.

Abstract: Quaternary ammonium salts formed by the reaction of hexamethylenetetramine with carboxylic acids and esters, amides and nitriles substituted in the alpha position by chlorine or bromine are preservatives for aqueous solutions, emulsions, and suspensions which are susceptible to microbiological degradation.