Automatic dishwasher powder detergent composition
AssigneeColgate-Palmolive Company
InventorsFahim U. Ahmed, Charles E. Buck
Life of this patent
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Abstract
The application is directed to an automatic dishwasher powder detergent composition with improved anti-filming and anti-spotting properties and to a method of using the detergent composition. The detergent composition comprises silica anti-filming agent, a water soluble polyacrylate antispotting agent, inorganic builder salts, chlorine bleach and bleach-stable detergent. The compositions provide reduced filming and spotting on dishware, glassware, china and the like, particularly in hard water at low temperature. The powder compositions are dry, free flowing and are highly soluble and readily dispersed in the wash bath.
Claims10
An automatic dishwasher powder detergent composition comprising approximately by weight:
- (a) 20 to 70% inorganic or organic detergent builder salt, said inorganic or organic detergent builder salt being selected from the group consisting essentially of alkali metal polyphosphates, alkali metal borates, alkali metal carbonates, alkali metal bicarbonates, alkali metal citrates and alkali metal tartarates and mixtures thereof;
- (b) 5 to 40% alkali metal silicate;
- (c) 0 to 30% alkali metal carbonate;
- (c) 0.1 to 6% chlorine bleach stable, water-dispersible organic detergent active material;
- (e) 0 to 6% chlorine bleach stable foam depressant;
- (f) chlorine bleach compound in an amount sufficient to provide about 0.5 to 8% of available chlorine;
- and
- (g) 0.5 to 3% of a nonabrasive silica anti-filming agent having a particle size of 0.75 to 3.0 microns.
An automatic dishwasher powder detergent composition comprising approximately by weight:
- (a) 20 to 60% alkali metal tripolyphosphate;
- (b) 8 to 35% sodium silicate;
- (c) 5 to 25 alkali metal carbonate;
- (d) 0.5 to 6% chlorine bleach stable, water dispersible organic nonionic detergent active material;
- (e) 0.1 to 5% chlorine bleach stable foam depressant;
- (f) chlorine bleach compound in an amount sufficient to provide about 0.5 to 5% of available chlorine;
- (g) a 0.5 to 2.0% amount of a nonabrasive silica anti-filming agent having a particle size of 0.75 to 1.5 microns;
- and
- (h) 0 to 12% moisture.
Dependencies are inferred from the claim text.