Clear, colorless soap bar with superior mildness, lathering and discoloration resistance
AssigneeJohnson & Johnson Consumer Products, Inc.
InventorDanilo L. Lambino
Life of this patent
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Abstract
The present invention relates to a clear colorless soap bar with superior mildness, lathering and discoloration resistance. The clear colorless soap consists of a blend of C12-C18 fatty acids neutralized with sodium hydroxide (NaOH) and triethanolamine (TEA). Excess TEA acts as a co-solvent and is responsible for clarity of the soap bar. The bar also contains a branched chain acid such as isostearic acid to break up crystallinity and add to product clarity. Low color and color stability are obtained by removing unsaturated fatty acids, and by the use of antioxidants (BHT and Vitamin E). Low levels of C6 to C10 fatty acids provide exceptional mildness.
Claims23
A clear soap bar comprising:
- (a) 0.1 to 1.0 percent by weight of a reducing agent;
- (b) about 40 to about 65 percent by weight of a mixture of alkali metal salts of C6 to C22 carboxylic acids and alkanolamine salts of C6 to C22 carboxylic acids;
- (c) about 35 to about 60 percent by weight of a solvent mixture comprising water and alkanolamine;
- and
- (d) from about 0.001 to about 1.0 percent by weight of an antioxidant selected from the group consisting of butylated hydroxy toluene, butylated hydroxy anisole, vitamin E, vitamin E derivatives, and mixtures thereof;
- wherein about 2 to about 20 weight percent of the carboxylic acids are C8 to C18 branched carboxylic acids, and wherein the carboxylic acids have an iodine number less than or equal to about 2.0.
A clear soap bar comprising:
- (a) sodium hydrosulfite, present at a concentration of about 0.2 percent to about 0.6 percent by weight;
- (b) about 50 to about 55 percent by weight of a mixture of sodium and triethanolamine salts of C.sub.6 to C.sub.22 carboxylic acids, the weight ratio of said sodium salts to said triethanolamine salts being from about 45:55 to about 55:45;
- (c) at least about 90 percent by weight of the carboxylic acids from which the carboxylic acid salts are derived are C.sub.12 to C.sub.18 linear, straight chain saturated carboxylic acids;
- (d) about 40 to about 45 percent by weight of a solvent mixture, said solvent mixture further comprises water and from about 65 percent to about 85 percent by weight triethanolamine;
- (e) butylated hydroxy toluene at a concentration of about 0.005 percent to about 0.05 percent by weight and Vitamin E at a concentration of about 0.1 percent by weight;
- and
- (f) the remaining percentage of the carboxylic acids from which the carboxylic acids salts are derived are branched carboxylic acids selected from the group consisting of isostearic acid, 2-ethyl-hexanoic acid and mixtures thereof, and wherein said branched carboxylic acids comprise from about 2 to about 10 percent by weight of the total of the carboxylic acids from which the soap bar is derived.
Dependencies are inferred from the claim text.