Protection of isothiazolinone biocides from free radicals

Details Protection of isothiazolinone biocides from free radicals Protection of isothiazolinone biocides from free radicals

A - Human Necessities

01

N

A01N 43/90 (2006.01) A01N 43/80 (2006.01) C09K 15/06 (2006.01)

Patent

CA 2124234

ABSTRACT PROTECTION OF ISOTHIAZOLINONE BIOCIDES FROM FREE RADICALS Biocidal isothiazolinone or isothiazolothione compounds are stabilized with an effective amount of a free-radical scavenyer compound. Exemplary of the biocidal isothiazolones are 1,2-benzisothiazolin-3-one, 2-methyl-4-5-trimethylene- 4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one. Effective free-radical scavengers include 3,3-thiodipropionic acid, L-ascorbic acid, D-ascorbic acid, fumaric acid, diethylhydroxylamine, glutaraldehyde, butyraldehyde, L-tartaric acid, 4-methoxyphenol and propyl gallate.

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