Iron stabilizers for 3-isothiazolones

Details Iron stabilizers for 3-isothiazolones Iron stabilizers for 3-isothiazolones

C - Chemistry, Metallurgy

07

D

C07D 275/03 (2006.01) A01N 25/22 (2006.01) A01N 43/80 (2006.01)

Patent

CA 2112962

ABSTRACT OF THE DISCLOSURE A method of preparing a stable, dilute aqueous solution of at least one 3-isothiazolone compound comprising 5-chloro-2-methyl-3- isothiazolone, the concentration of said compound(s) in said solution being about 0.5 to 5% by weight based on solution, comprising introducing about 0.1 to 5% by weight based on said solution, of a ferric salt as the stabilizer is disclosed. Dilute aqueous solutions of about 0.5 to 5.0 parts by weight of at least one 3-isothiazolone compound comprising 5-chloro-2-methyl-3- isothiazolone, about 0.1 to 2.5 parts by weight of a stabilizing, water soluble, non-chelated ferric salt, and about 92 to 99 parts by weight of aqueous solvent, also disclosed. 14

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