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US 10,702,456 B2Granted
In-SITU process for making a small particle narrow distribution fatty acyl isethionate in oil composition
AssigneeConopco, Inc.
InventorsAnat Shiloach, John Robert Winters, Badreddine Ahtchi-Ali
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Abstract
The invention relates to novel compositions and novel in-situ process for making small average particle size, narrow distribution FAI in oil. The process comprises preparing FAI; separately optionally heating oil; adding oil to FAI in a molten state; heating to defined temperature; and cooling the heated mixture at a defined, controlled rate which ensures proper size and distribution are met.
Claims14
A process for making an oil continuous composition, the process comprising the steps of:
- a) reacting HOR′SO3M,
- where R′ is a divalent hydrocarbon radical having 2 to 4 carbons and M is an alkali metal cation,
- with RCOOH, where R is a monovalent aliphatic radical having 7 to 24 carbons to produce RCOOR″SO3M,
- said reactants being combined at a temperature of 20 to 25° C. and heated to 200° to 245° C.;
- b) adding an oil selected from the group consisting of mineral oil, triglyceride oil, silicone oil and mixtures thereof, wherein said oil has optionally been heated from 20-25° C. to 80 to 130° C., to the heated reaction product of step (a) while still in a molten state;
- c) continuing to heat a mixture of the product of (a) and oil of (b) at a temperature of 200 to 245° C. to form a liquid phase mixture of fatty acyl isethionate, unreacted fatty acid, unreacted isethionate, catalyst, if used, trace impurities, if any, and oil;
- and
- d) cooling the resultant mixture at 0.5 to 5° C. per minute to below the solidification temperature of the fatty acyl isethionate.
5 more elements
Dependencies are inferred from the claim text.