Alkylaryl-o-ethoxylate blends with their respective sulfates
AssigneeChurch & Dwight Co., Inc.
InventorsCharles D. Carr, Archana Gupta
Life of this patent
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Abstract
A process for the preparation of mixed ethoxylated alkyl phenol/alkyl phenol ethoxy sulfate surfactants, such surfactants, and detergent formulations incorporating the same. The mixed surfactants are more tolerant of sodium carbonate, allowing greater amounts of sodium carbonate to be used so that the amount of surfactant can be reduced resulting in overall cost savings in the resultant laundry product.
Claims17
A surfactant blend comprising an alkylaryl-O-ethoxylate having a relatively low ethoxy content and an alkylaryl-O-ethoxylate having a relatively high ethoxy content together with their respective sulfates wherein the alkyl portion of each ethoxylate and each sulfate is independently selected from the group consisting of alkyls of 6 to 12 carbon atoms;
- the aryl portion of each ethoxylate and each sulfate is independently selected from the group consisting of aryls having 6-10 carbon atoms;
- the low ethoxylate component and its sulfate independently have an average of from about 1 to about 6 ethoxy groups per molecule;
- and the high ethoxylate component and its sulfate independently have an average of from about 7 to about 14 ethoxy groups per molecule;
- wherein sum of the high ethoxylate component and its sulfate is present in a weight ratio of about 90:10 to 10:90 relative to the sum of the low ethoxylate component and its sulfate.
Dependencies are inferred from the claim text.