C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 7/54 (2006.01) C01B 11/06 (2006.01) C09K 15/16 (2006.01) C11D 3/28 (2006.01) C11D 3/395 (2006.01) C11D 7/32 (2006.01)
Patent
CA 2123993
2123993 9407987 PCTABS00032 The present invention provides for dilute aqueous hypohalite solutions stabilized against decomposition catalyzed by copper ions present in said solution containing a small amount of a multidentate heteroaromatic stabilizer compound including general structure selected from: (1), (2), (3), wherein Ar is comprised of carbon or carbon and nitrogen atoms sufficient to form a 5- or 6-membered aromatic ring or at least one other ring condensed with said 5- or 6-membered aromatic ring, X is selected from the group consisting of nitrogen or carbon which form part of an aromatic ring structure and oxygen, and Y is nitrogen or carbon which form part of an aromatic ring structure. This invention also provides stable hypohalite-containing aqueous bleach, detergent and disinfectant formulations which retain hypohalite stability even after further dilution with copper-contamined water.
Colgate-Palmolive
Smart & Biggar
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