Personal care composition and method of making
AssigneeThe Procter & Gamble Company
InventorTimothy Charles Gulbin
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Abstract
This invention relates to an improved crystallization process of hydrogenated castor oil structurant which results in (i) a dispersion having a high concentration of the structurant, and (ii) a crystal habit/form that results in a higher yield stress in the final product, imparting high stability, for a given amount structurant. In addition, the resulting personal care product is consumer desired, as less structurant residue is observed on hair after the use of the personal care product.
Claims25
A personal care composition comprising
- a. from about 5% to about 25 wt % of an detersive surfactant;
- b. from about 1% to about 20% wt % of hydrogenated castor oil premix composition by weight of the personal care composition wherein the hydrogenated castor oil premix composition comprises:
- i. from about 0.30% to about 4% of hydrogenated castor oil by weight of the premix composition;
- ii. from about 15% to about 40% of one or more surfactants, by weight of the premix composition;
- iii. from about 60% to about 80% a aqueous carrier by weight of the premix composition;
- c. from about 80% to about 95% of an aqueous carrier by weight of the personal care composition;
- wherein the personal care composition comprises from about 0.03% to about 1% of hydrogenated castor oil by weight of the personal care composition, and
- wherein the personal care composition comprises crystals and
- wherein from about 80 weight % to about 100 weight % of the crystals have a fiber shape, and
- wherein from about 80% to about 100% of the fiber shaped crystals are longer than about 5 micrometers.
A method of making a personal care composition comprising the steps of:
- a. preparing a premix composition by
- 1. mixing
- i. from about 0.30% to about 4% of hydrogenated castor oil by weight of the premix composition, wherein the hydrogenated castor oil comprises of particles of which 90% by weight of the total hydrogenated castor oil consists of particle with size of less than 60 micrometers;
- ii. from about 15% to about 40% of one or more surfactants, by weight of the premix composition;
- iii. from about 60% to about 80% of an aqueous carrier by weight of the premix composition;
- 2. adjusting the pH of the premix composition to about 5 to about 12;
- 3. heating the premix composition to 65-84° C.;
- 4. cooling the premix composition to a temperature of about 60° C. to about 20° C.
- b. forming a personal care composition by combining the pre-mix with
- 1. from about 5% to about 25% of detersive surfactant by weight of the personal care composition;
- 2. from about 80% to about 95% of an aqueous carrier by weight of the personal care composition;
- wherein the personal care composition comprises from about 0.03% to about 1% of hydrogenated castor oil by weight of the personal care composition, and
- wherein the personal care composition comprises crystals and
- wherein from about 80 weight % to about 100 weight % of the resulting crystals have a fiber shape, and
- wherein from about 80% to about 100% of the fiber shaped crystals are longer than about 5 micrometers.
A method according to claim 6, wherein the personal care composition comprises from about 0.05% to about 0.5% of hydrogenated castor oil by weight of the personal care composition.
A method according to claim 7, wherein the personal care composition comprises from about 0.05% to about 0.15% of hydrogenated castor oil by weight of the personal care composition.
A method according to claim 9, wherein from about 80% to about 100% of the fiber shaped crystals have a length of from about 10 micrometers to about 50 micrometers.
A method according to claim 10, wherein from about 80% to about 100% of the fiber shaped crystals have a length of from about 20 micrometers to about 40 micrometers.
The method of claim 20, wherein the anionic surfactant SLE1S.
A personal care composition comprising
- a. from about 5% to about 25% by weight of the personal are composition of a detersive surfactant;
- b. from about 0.30% to about 4% of hydrogenated castor oil by weight of the personal care composition;
- c. an aqueous carrier;
- wherein the personal care composition comprises crystals and
- wherein from about 80 weight % to about 100 weight % of the crystals have a fiber shape, and
- wherein from about 80% to about 100% of the fiber shaped crystals are longer than about 10 micrometers.
Dependencies are inferred from the claim text.