Method of preparing a product composition comprising a discrete particle and an aqueous base composition
Disclosed is a method of preparing a product composition comprising steps of: Preparing a mixture composition comprising a surfactant and a high melting point fatty compound and benefit agent; Separately preparing an aqueous base composition comprising a surfactant, a high melting point fatty compound, and an aqueous carrier and wherein the aqueous base composition is substantially free of detersive surfactant; Mixing the mixture composition and the aqueous base composition to form a discrete particle of the mixture composition dispersed in the aqueous base composition. Alternatively, the method comprises steps of preparing a discrete particle of the mixture composition; and mixing it with the aqueous composition. The methods of the present invention provide a product composition with at least one the followings: more flexibility in the product composition rheology; improved stability in the product composition; improved deposition of benefit agents; and improved visual/aesthetic appearance.
1. A method of preparing a hair conditioning product composition comprising steps of:
Preparing a discrete particle mixture composition comprising a surfactant wherein the surfactant is selected from the group consisting of behenyl trimethyl ammonium methosulfate, behenyl trimethyl ammonium chloride, stearamidopropyl dimethylamine, and mixtures thereof and a high melting point fatty compound wherein the high melting point fatty compound is selected from the group consisting of cetyl alcohol, stearyl alcohol and mixtures thereof and a benefit agent wherein the benefit agent is a coloring agents to add a different color to the discrete particle from the color of the aqueous base composition, Separately preparing an aqueous base composition comprising a surfactant, a high melting point fatty compound, and an aqueous carrier, wherein the aqueous base composition is substantially free of a detersive surfactant selected from anionic surfactants, zwitterionic surfactant, amphoteric surfactant, and combinations thereof;
Mixing the discrete particle mixture composition and the aqueous base composition, to form a discrete particle of the mixture composition dispersed in the aqueous base composition.
2. The method of claim 1 , wherein mixing the mixture composition and the aqueous base composition, both at a temperature lower than the melting point of the high melting point fatty compound contained in the mixture compound.
3. The method of claim 1 , wherein mixing the discrete particle and the aqueous base composition, both at a temperature lower than the melting point of the high melting point fatty compound contained in the discrete particle.
4. The method of claim 1 , wherein the mixture composition is prepared by steps of:
preparing a melting mixture composition comprising the surfactant and the high melting point fatty compound, wherein the temperature of the melting mixture composition is higher than a melting point of the high melting point fatty compound contained in the mixture composition;
cooling the melting mixture composition to the temperature which is lower than a melting point of the high melting point fatty compound contained in the mixture composition, to form the mixture composition;
wherein the benefit agent is added to the mixture composition before cooling, during cooling and/or right after cooling.
5. The method of claim 1 , wherein the discrete particles are not coated or encapsulated.
6. The method of claim 1 , wherein the discrete particle exists in the composition for 1 month or longer.
7. The method of claim 1 , wherein the discrete particle is swollen in the product composition.
8. The method of claim 1 , wherein the discrete particle is not an oil-in-water emulsion or water-in-oil-in-water emulsion.
9. The method of claim 1 , wherein the discrete particle before swelling is solid.
10. The method of claim 1 , wherein the discrete particle before swelling contains less than about 50% of water, by weight of the discrete particle.
11. The method of claim 1 , wherein the discrete particle before swelling comprises from about 10% to about 100% the surfactants and the high melting point fatty compounds, by weight of the discrete particle.
12. The method of claim 1 , wherein the surfactant contained in the aqueous base composition is hydrophobic.
13. The method of claim 1 , wherein the surfactant contained in the aqueous base composition is selected from the group consisting of: a cationic surfactant, a nonionic surfactant.
14. The method of claim 1 , wherein the surfactant contained in the discrete particle is hydrophobic.