Automatic dishwashing compositions comprising cobalt catalysts

Details Automatic dishwashing compositions comprising cobalt catalysts Automatic dishwashing compositions comprising cobalt catalysts

1997-11-05

1999-10-05

Fries, Kery

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

For cleaning a specific substrate or removing a specific...

510224, 510227, 510228, 510375, 510376, 134 252, C11D 339, C11D 3395, C11D 754, B08B 304

Patent

active

059623861

ABSTRACT:
Automatic dishwashing detergent compositions comprising certain cobalt catalysts are provided. More specifically, the invention relates to automatic dishwashing detergents which provide enhanced cleaning/bleaching benefits (especially tea stain removal) through the selection of 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; m is 0, 1 or 2 (preferably 1); 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, where y is an integer to obtain a charge-balanced salt (preferably y is 1 to 3; most preferably 2 when T is a -1 charged anion); and wherein further said catalyst has a base hydrolysis rate constant of less than 0.23M.sup.-1 s.sup.-1 (25.degree. C.).
Preferred automatic dishwashing compositions comprise amylase and/or protease enzymes. Included are methods for washing tableware in domestic automatic dishwashing appliances using the cobalt catalysts.

REFERENCES:
patent: 4810410 (1989-03-01), Diakun et al.
patent: 5089162 (1992-02-01), Rapisarda et al.
patent: 5599781 (1997-02-01), Haeggberg et al.
patent: 5703030 (1997-12-01), Perkins et al.
patent: 5705464 (1998-01-01), Scheper et al.
patent: 5798326 (1998-08-01), Goldstein et al.
patent: 5804542 (1998-09-01), Scheper et al.

Affiliated with

Also associated with

Rating

Automatic dishwashing compositions comprising cobalt catalysts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic dishwashing compositions comprising cobalt catalysts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic dishwashing compositions comprising cobalt catalysts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1171274