Powder laundry detergent product with improved cold water residue properties
AssigneeChurch & Dwight Co., Inc.
InventorsBruce R. Conley, Anthony J. Falotico, Louis R. Mazzola, Herman L. Marder
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Abstract
This invention provides a powder carbonate-based laundry detergent which can be utilized in cold water fabric laundering with a minimized remainder of undissolved detergent residue in the wash water. An essential aspect of the laundry detergent formulation is a content of a partially sulfated and neutralized blend of ethoxylated alcohol surfactant constituents. A preferred type of surfactant ingredient is a Neodol 23-3 derived type of blend which is 60-65 percent sulfated and neutralized.
Claims8
A powder laundry detergent composition with improved cold water residue properties, which is a granulated blend of ingredients comprising (1) between about 40-90 weight percent of a water-soluble detergent builder ingredient wherein at least one third of the detergent builder ingredient is sodium carbonate;
- and (2) between about 5-40 weight percent of a detergent active ingredient which is a surfactant blend comprising (a) between about 40-80 weight percent, based on the surfactant weight, of an anionic salt compound consisting essentially of the formula:
- R—O—(CH2CH2O)n—SO3M
- where R is a C12-C13 alkyl group, n is an average number of ethoxylate groups between about 2-6, and M is an alkali metal or ammonium cation, and (b) between about 20-60 weight percent, based on surfactant weight, of a nonionic compound consisting essentially of the formula:
- R—O—(CH2CH2O)n—H
- where R is a C12-C13 alkyl group, and n is an average number of ethoxylate groups between about 2-6.
A detergent active composition which is a surfactant blend comprising (a) between about 40-80 weight percent of an anionic salt compound consisting essentially of the formula:
- R—O—(CH2CH2O)n—SO3M
- where R is a C12-C13 alkyl group, n is an average number of ethoxylate groups between about 2-6, and M is an alkali metal or ammonium cation, and (b) between about 20-60 weight percent of a nonionic compound consisting essentially of the formula:
- R—O—(CH2CH2O)n—H
- where R is a C12-C13 alkyl group, and n is an average number of ethoxylate groups between about 2-6.
Dependencies are inferred from the claim text.