Pigments and extender pigments with enhanced skin adhesion for cosmetic preparations
AssigneeU.S. Cosmetics Corporation
InventorsMasaru Kobayashi, William Zavadoski, William Kalriess, Ian Smith, Shigeru Kishida
Life of this patent
Estimating the term…
Abstract
A composition and method for enhancing skin adhesion of cosmetics by using pigments and extender pigments for the cosmetics, which pigments and extender pigments are treated with at least one hydrophobidizing agent and/or hydrophobidizing/lipophobidizing agent and one or more high viscosity esters having a viscosity in excess of 30 cps. The present invention further comprises such coated pigments and extender pigments as well as cosmetics made therewith.
Claims8
A composition for use in a cosmetic preparation comprising at least one of a pigment and extender pigment having exposed surfaces thereof, wherein the surfaces of the pigment and extender pigment art coated with at least one of a hydrophobidizing agent and a hydrophobidizing/lipophobidizing agent and at least one high viscosity ester of viscosity in excess of 30 cps, wherein the ester can be either a smile ester or a mixture of more than one ester or polyester, wherein these esters or polyesters are made from fatty acids selected from the group consisting of stearic acid, isostearic acid, hydroxystearic acid, palmitic acid, oleic acid, erucic acid, ricinoleic acid, and myristic acid and from carboxylic acids selected from the group consisting of malic acid, caprylic acid, capric acid, adipic acid, and 2-ethylhexanoic acid;
- an alcohol selected from the group consisting of glycerin, cholesterol, phytosterol, isostearyl alcohol, and octyldodecanol, and organic compounds selected from the group consisting of a dimer of pentaerythritol and hexitol anhydrides derived from sorbitol whereby skin adhesion is enhanced and wherein said coating is stable even in the presence of water.
A method for increasing skin adhesion of cosmetic preparations having pigments or extender pigments, comprising the steps of:
- a) coating surfaces of the pigments or extender pigments with at least one of a hydrophobidizing agent, and a hydrophobidizing/lipophobidizing agent and at least one high viscosity ester of viscosity in excess of 30 cps, wherein the ester can be either a single ester or a mixture of more than one ester or polyester, wherein these esters or polyesters are made from fatty acids selected from the group consisting of stearic acid, isostearic acid, hydroxystearic acid, palmitic acid, oleic acid, erucic acid, ricinoleic acid, and myristic acid and from carboxylic acids selected from the group consisting of malic acid, caprylic acid, capric acid, adipic acid, and 2-ethylhexanoic acid;
- an alcohol selected from the group consisting of glycerin, cholesterol, phytosterol, isostearyl alcohol, and octyldodecanol, and organic compounds selected from the group consisting of a dimer of pentaerythritol and hexitol anhydrides derived from sorbitol said coating being stable in the presence of water, and
- b) incorporating the pigment or extender pigment in a cosmetic preparation.
Dependencies are inferred from the claim text.