Biocidal cyclic thiohydroxamic acids and salts or complexes...

C - Chemistry – Metallurgy – 07 – D

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C07D 277/50 (2006.01) A01N 43/50 (2006.01) A01N 43/52 (2006.01) A01N 43/78 (2006.01) C07D 233/84 (2006.01) C07D 233/88 (2006.01) C07D 277/36 (2006.01) C07D 277/70 (2006.01) C07D 277/72 (2006.01) C09D 5/02 (2006.01) C14C 9/00 (2006.01)

Patent

CA 1340330

Compounds having a 5 membered, nitrogen containing ring with a chione group adjaceny to a nitrogen atom substituted with an OR group have antimicrobial properties. Metal complexes or salts of formula (I) also have antimicrobial properties. (see fig. I) wherein: A is a nitrogen or carbon atom, which may be substituted; B and D are, independently, oxygen or sulphur or a nitrogen or carbon atom which may be substituted; or A and/or B and/or B and/or D may be part of a ring system; R is hydrogen, a hydrocarbyl group, a substltuted hydrocarbyl group, an acyl group, a substituted acyl group or a group -COOR1; and R1 is a hydrocarbyl group with the proviso that B and D are not both sulphur or both oxygen. The compounds, or the metal complexes or salts thereof, can be used as a cutting fluid preservative, a wood preservative, in cooling water applications or as an antimicrobial agent in a paint. Some of the compounds are new. The metal complexes or salts are new.

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