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US 6,562,874 B1Granted
Compositions comprising combination of DEFI and modified DEFI and methods of making
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsLeonora Ilardi, Lee Ann Gallagher, Michael Massaro
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Abstract
Composition may be prepared in a single DEFI reactor comprising mixtures of (1) DEFI (directly esterified fatty acyl isethionate) and (2) a compound produced by the reaction of (a) isethionate with a fatty acid replacement (e.g., a multicarboxylic fatty acid, a fatty acid); or (b) fatty acid with an isethionate replacement (e.g., C2-C24 alcohols, C2-C20 organic acids, amines). Such mixtures are milder than DEFI alone while retaining substantially same foaming benefit.
Claims6
A final composition product comprising a mixture of:
- (a) an alkali metal, straight chain, saturated C8 to C22 ester of isethionate produced by the reaction of about 20% to 50% by wt. Alkali metal isethionate and about 35% to 75% by wt. Straight chain saturated C8 to C22 monocarboxylic fatty acid;
- and
- (b) a compound produced by the reaction of:
- (i) C8 to C22 straight chain, saturated monocarboxylic acids;
- and
- (ii) a compound which replaces a portion of the alkali metal isethionate used to make the ester of (a) and which is selected from the group consisting of pentaerythritol, taurine, N-methyltaurine and mixtures thereof;
- wherein (a) and (b) are produced in the same reactor under the same conditions;
- and
- wherein the amount of compound (ii) replacing said alkali isethionate of (a) is 5% to 75% of the isethionate, on a weight basis.
6 more elements
Dependencies are inferred from the claim text.