Detergent powders of improved solubility
AssigneeLever Brothers Company
InventorsAnthony A. Rapisarda, Joseph Romeo, Jose A. Lopez
Life of this patent
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Abstract
The present invention relates to a powder detergent composition of improved solubility and methods of making them. The composition comprises a silicate free alkaline blend consisting essentially of about 10-60% builder, about 0.6-6% surfactant. about 20-50% alkaline agent and 0-70% filler; and an admixture of said blend with about 10-30% of solid alkali metal silicate and a chlorine donor providing about 0.4-1.5% available chlorine, the pH of the resulting finished product being about 10.4 or greater at about a 0.25% product use concentration.
Claims9
A process for making a powder detergent of improved solubility, comprising the steps of:
- (1) preparing a silicate free alkaline blend consisting essentially of, in percent by weight of the finished product, about 10-60% builder, about 0.6-6% surfactant, about 20-50% alkaline agent and 0 to about 70% filler;
- and
- (2) thereafter mixing said blend with about 10-30% solid alkali metal silicate and a chlorine donor providing about 0.4-1.5% available chlorine, the pH of the resulting product being about 10.4 or greater at about 0.25% product use concentration.
A process of making a detergent powder of improved solubility, comprising the steps of:
- (1) preparing a silicate free blend consisting essentially of, in percent by weight of the finished product, about 24% of anhydrous sodium tripolyphosphate, about 15% sodium sulfate, about 35% soda ash, and a premix prepared by adding about 8% water to about 3% of a nonionic surfactant selected from the group consisting of polyoxyethylene polyoxypropylene block copolymers and linear alcohol alkoxylates;
- and
- (2) thereafter mixing said blend with about 13.8% sodium silicate, and about 1.5% sodium dichloroisocyanurate.
A process for making a detergent powder of improved solubility, comprising the steps of:
- (1) preparing a silicate free blend consisting essentially of, in percent by weight, about 24% of a builder selected from the group consisting of sodium citrate and trisodium carboxymethyloxy succinate, about 16% sodium sulfate, about 35% soda ash, about 4.5%-6% nonionic surfactant, and about 3% sodium polyacrylate;
- and
- (2) thereafter mixing said blend with about 13% solid sodium silicate and about 1%-2% sodium dichloroisocyanurate.
Dependencies are inferred from the claim text.