Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1998-02-24
1999-08-17
Diamond, Alan
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510221, 510222, 510224, 510226, 510227, 510228, 510229, 510231, 510232, 510233, 510235, 134 252, C11D 716, C11D 718, C11D 742
Patent
active
059393734
ABSTRACT:
Automatic dishwashing detergent compositions comprising phosphate builder and metal-containing bleach catalyst, preferably catalysts containing manganese and/or selected from selected cobalt/ammonia catalysts. Preferred compositions comprise cobalt bleach catalyst having the formula:
wherein cobalt is in the +3 oxidation state; n is 4 or 5 (preferably 5); M is one or more ligands coordinated to the cobalt by one site; B is a ligand coordinated to the cobalt by two sites; b is 0 or 1 (preferably 0); and when b=0, then m+n 6, and when b=1, then m=0 and n=4; and T is one or more appropriately selected counteranions present in a number y, wherein y is an integer to obtain a charge-balanced salt (preferably y is 1-3; most preferably 2 when T is a -1 charged anion); and wherein further the catalyst has a base hydrolysis rate constant of less than 0.23M.sup.-1 s.sup.-1 at 25.degree. C. Preferred automatic dishwashing compositions further comprise amylase and/or protease.
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Haeggberg Donna Jean
Scheper William Michael
Diamond Alan
Rasser Jacobus C.
Robinson Ian S.
The Procter & Gamble & Company
Zerby Kim William
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