Rohm and Haas Company

Dow Global Technolgoies LLC

Eileen Fleck Warwick

Megan Anne Diehl

Dolores Ann Shaw

Richard Levy

Bei Yin

Freddie L Singleton

Terry Michael Williams

Beat Heer

Li Liang Chia

Gerhard Tiedtke

Christine Mary Schultz

Dalores Ann Shaw

Li-Liang Chia

Antimicrobial compositions based on the synergistic combination of 2-methyl-3-isothiazolone and selected commercial microbicides where the compositions are substantially free of halogenated 3-isothiazolone, are disclosed. Particularly preferred are combinations of 2-methyl-3-isothiazolone together with benzoic acid, citric acid, sorbic acid, 1,2-dibromo-2,4-dicyanobutane, 1,3-dimethylol-5,5-dimethylhydantoin, phenoxyethanol, benzyl alcohol, zinc pyrithione or climbazole, that provide enhanced microbicidal efficacy at a combined active ingredient level lower than that of the combined individual 3-isothiazolone and commercial microbicide effective use levels.

Synergistic microbicidal combinations

A biocidal composition comprising 2,2-dibromomalonamide and an isothiazolinone-based biocide, and its use for the control of microorganisms in aqueous and water-containing systems.

Compositions of dibromomalonamide and their use as biocides

Synergistic microbicidal compositions containing N-(n-butyl)-1,2-benzisothiazolin-3-one or N-methyl-1,2-benzisothiazolin-3-one.

Microbicidal composition

A microbicidal composition containing: (a) at least one non-halogenated 2-alkyl-4-isothiazolin-3-one selected from substituted and unsubstituted 2-(C-C)alkyl-4-isothiazolin-3-ones; and (b) at least one of 2,2'-dithiobis(N-methylbenzamide) and 2-methylbenzisothiazolone.

A microbicidal composition of 1,2-benzisothiazolin-3-one; and at least one of benzalkonium chloride, benzethonium chloride, benzyl alcohol, caprylyl glycol, chlorphenesin, diazolidinyl urea, ethylparaben, imidazolidinyl urea, methylparaben, phenoxyethanol, linoleamidopropyl PG-dimonium chloride phosphate, cocamidopropyl PG-dimonium chloride phosphate, propylparaben, cis-1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride, dehydroacetic acid or its salts, benzoic acid or its salts, and sodium hydroxymethylglycinate.

Microbicidal compositions containing selected ratios of a non-halogenated 2-alkyl-3-isothiazolone and one or more (C -C ) esters of para-hydroxybenzoic acid are disclosed as improved formulations for controlling microbial growth. In particular the combination of 2-methyl-3-isothiazolone with a mixture of methyl para-hydroxybenzoate and propyl para-hydroxybenzoate is especially effective as a microbicidal component in personal care compositions.

Growing community of inventors

Lansdale, PA, United States of America

Eileen Fleck Warwick