Hair conditioning composition having higher yield point and higher conversion rate of fatty compound to gel matrix

摘要

Disclosed is a hair conditioning composition comprising: (a) a cationic surfactant; (b) a high melting point fatty compound; and (c) an aqueous carrier; wherein the cationic surfactant, the high melting point fatty compound, and the aqueous carrier form a gel matrix; wherein the composition has from about 90% to about 100% of a conversion rate of the high melting point fatty compound to the gel matrix; and wherein the composition has a yield point of about 33 Pa or more. Also disclosed is a method of manufacturing of hair conditioning composition. The compositions of the present invention, and the compositions made by the method of the present invention, provide improved conditioning benefits, especially, improved wet conditioning benefits after rinsing and improved dry conditioning, while maintaining wet conditioning benefit before rinsing.

主权项

1. A method of manufacturing a hair conditioning composition, wherein the composition comprises a cationic selected from the group consisting of behenyl trimethyl ammonium chloride and stearyl trimethyl ammonium chloride surfactant, fatty alcohol selected from the group consisting of stearyl alcohol, cetyl alcohol, behenyl alcohol and mixtures thereof and an aqueous carrier;
wherein a total amount of the cationic surfactant and the high melting point fatty compound is from about 7.0% to about 15% by weight of the composition; wherein the method comprises the steps:
(1) preparing a premix (oil phase) comprising the cationic surfactants and the high melting point fatty compounds, wherein the temperature of the premix is higher than a melting point of the high melting point fatty compounds; and(2) preparing an aqueous carrier (aqueous phase), wherein the temperature of the aqueous carrier is below the melting point of the high melting point fatty compounds; and(3) mixing the premix with the aqueous carrier and forming a gel matrix;wherein the mixing step (3) comprises the steps:
(3-1) feeding either of the oil phase or the aqueous phase into a high shear field having an energy density of about 1.0×102 J/m3 or more;(3-2) feeding the other phase directly to the field; and(3-3) forming an emulsion wherein the premix has a temperature of from about 65° C. to about 95° C. when mixing it with the aqueous carrier wherein the aqueous carrier has a temperature of from about 10° C. to about 52° C.; when mixing it with the premix wherein the temperature of the aqueous phase, when mixing it with the premix is at least about 5° C. lower than the temperature of the premix wherein the temperature of the aqueous carrier, when mixing it with the premix, is from about 2° C. to about 60° C. lower than the melting point of the high melting point fatty compounds; and wherein the premix and the aqueous carrier are mixed by a high shear homogenizer wherein the hair conditioning composition comprises less than 0.1% dialkyl cationic surfactants, by weight of the composition and wherein the oil phase is substantially free of water and wherein the premix is injected to a high shear field having an energy density of from about 1.0×104 J/m3 to about 1.0×107 J/m3 using a direct injection rotor-stator homogenizer where the water is already present.