Mixed salts of sulfonated estolides and other derivatives of fatty acids, and methods of making them
First Claim
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1. A composition comprising a mixture of sodium and potassium salts of sulfo-estolides, which have the following Formula:
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Abstract
Sulfo-estolides and methods of making them are described. Also described are phase-stable compositions formed from mixtures of different salts of sulfo-estolides, particularly mixtures of sodium and potassium salts of sulfo-estolides, and methods of obtaining phase-stable sulfo-estolide mixed salt compositions. The sulfo-estolide mixed salt compositions can be used in detergent formulations, such as laundry detergents, household, industrial and institutional cleaning formulations, and person care products.
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34 Claims
- 1. A composition comprising a mixture of sodium and potassium salts of sulfo-estolides, which have the following Formula:
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15. A process for preparing a phase-stable sulfo-estolide composition comprising the steps of:
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(a) providing at least one sulfonated intermediate made by sulfonating at least one unsaturated fatty carboxylic acid having 8 to 24 carbon atoms; (b) reacting the sulfonated intermediate with a chain termination agent having 4 to 24 carbon atoms to form at least one sulfo-estolide; (c) neutralizing the at least one sulfo-estolide by adding to the at least one sulfo-estolide a caustic agent selected from the group consisting of KOH, NaOH and mixtures thereof to obtain a neutralized sulfo-estolide salt; (d) bleaching the neutralized sulfo-estolide salt with hydrogen peroxide at a pH level in the range of about 4.5 to about 7.5; and (e) adding additional KOH, NaOH or mixtures thereof before, during or after the bleaching step in an amount sufficient to obtain a mixture of potassium and sodium sulfo-estolide salts that results in a phase-stable sulfo-estolide composition that is clear and homogeneous. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A laundry detergent composition, comprising:
about 2% to about 90% by weight of a mixture of sodium and potassium salts of sulfo-estolides having the following Formula 1; - View Dependent Claims (30, 31)
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32. A laundry detergent composition, comprising:
about 2% to about 90% by weight of a mixture of sodium and potassium salts of sulfo-estolides having the following Formula 1; - View Dependent Claims (33)
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34. A composition comprising a mixture of salts of sulfo-estolides, which have the following Formula:
Specification