| Rinse-off personal care compositions containing high modulus lipids -> Monitor Keywords |
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Rinse-off personal care compositions containing high modulus lipidsRelated Patent Categories: Drug, Bio-affecting And Body Treating Compositions, Live Hair Or Scalp Treating Compositions (nontherapeutic), Anionic Surfactant ContainingRinse-off personal care compositions containing high modulus lipids description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060239953, Rinse-off personal care compositions containing high modulus lipids. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATION(S) [0001] This application claims the benefit of Provisional Application Ser. Nos. 60/658,687, filed Mar. 4, 2005, and 60/700,960, filed Jul. 20, 2005. FIELD OF THE INVENTION [0002] The present invention relates to the field of personal care compositions for improving appearance and feel of keratinous surfaces. More specifically, the present invention relates to rinsable personal care compositions that provide excellent skin appearance, skin moisturization and conditioning, and/or skin cleansing. BACKGROUND OF THE INVENTION [0003] Personal care compositions are well known and widely used. These compositions have long been employed to cleanse and moisturize skin, deliver actives, hide imperfections and to reduce the oiliness/shine associated with sebum. [0004] While the compositions and disclosures of the prior art provide useful advances in the art of personal care compositions, there remains the need for compositions that deliver immediate improvements in appearance and skin feel that will effectively deposit on all parts of the body. The compositions also need to be easy to apply and should not have a greasy or tacky feeling after application. It is further desirable for the compositions to deliver the above skin conditioning and appearance benefits via an application and removal process, such as in-the-shower or in-the-bath lotion, or a keratin-cleansing composition. Unfortunately for these applications, the moisturizers contained in the compositions are often readily rinsed or otherwise removed from the skin; this is particularly true when surfactant is also present. In recent publications, compositions containing structured lipids have been taught to provide enhanced deposition of moisturizers to the skin. It has been recognized that there is increased tackiness of the coating experienced by users when compositions contain more structured lipids and/or lipids with a higher modulus. It is now believed that utilizing a combination of high modulus lipids and esters in compositions, that the deposition of moisturizers can be maintained, while the tackiness of the coating can be substantially reduced upon rinsing, wiping or otherwise removing the product from the keratin surface. Therefore, it is desirable to provide a topical, rinseable and/or removable compositions that comprise a select level of skin benefit agent which include a high modulus lipids blended with esters to provide a unique level of skin moisturization without tackiness or greasiness across all skin types. SUMMARY OF THE INVENTION [0005] The present invention relates to a rinsable personal care composition that comprise (a) 0 to 75 weight percent of a surfactant; (b) 0.01 to 99 weight percent of skin benefit agent comprising a high modulus lipid in combination with an ester; and (d) 0 to 99 weight percent water. [0006] The present invention also relates to a process for moisturizing the skin that comprises the steps of: (a) cleansing the skin; (b) applying to the skin a composition comprising 0 to 75 weight percent of a surfactant; 0.01 to 99 weight percent of a skin benefit agent comprising a high modulus lipid and an ester; and 0 to 99 weight percent water and (c) rinsing said composition. [0007] The present invention also relates to a process for removing make-up that comprises the steps of: (a) applying the skin a composition comprising 0 to 75 weight percent of a surfactant; 0.01 to 99 weight percent of a skin benefit agent comprising a high modulus lipid and an ester; and 0 to 99 weight percent water and (b) rinsing or wiping away said composition. DETAILED DESCRIPTION OF THE INVENTION [0008] All percentages and ratios used herein are by weight of the total composition and all measurements made are at 25.degree. C., unless otherwise designated. [0009] The term "amphoteric surfactant," as used herein, is also intended to encompass zwitterionic surfactants, which are well known to formulators skilled in the art as a subset of amphoteric surfactants. [0010] The term "dermatologically-acceptable," as used herein, means that the compositions or components thereof so described are suitable for use in contact with human skin without undue toxicity, incompatibility, instability, allergic response, and the like. [0011] The term "diameter" as used herein, means the largest distance across the major axis of the particulate material. Diameter can be determined by any suitable method known in the art, such as particle size analyzer Mastersizer 2000 manufactured by Malvern Instruments. [0012] As used herein "high modulus lipid," means a lipid that has a lipid modulus of at least 50 Pa, preferably at least 75 Pa, 100 Pa, more preferably at least 200 Pa, even more preferably more than 300 Pa, even more preferably greater than 400 Pa, more preferably greater than 600 Pa as, and most preferably 700 Pa determined using the Lipid Modulus Test described in the Analytical Methods section below. The high modulus lipid should have a lipid modulus of no more than 5000 Pa, preferably no more than 4000 Pa, preferably no more than 3000 Pa, even more preferably no more than 2000 Pa and most preferably less than 1000 Pa. [0013] The term "hydrophobically modified interference pigment" or "HMIP", as used herein, means a portion of the interference pigment surface has been coated with a hydrophobic material. Hydrophobically modified interference pigments that are suitable for use in the compositions of the present invention are those disclosed in US Patent Application Publication No. 2004/0223929 A1, published Nov. 11, 2004. [0014] The term "interference pigment", as used herein, means a pigment with pearl gloss prepared by coating the surface of a particle substrate material (generally platelet in shape) with a thin film. The thin film is a transparent or semitransparent material having a high refractive index. The higher refractive index material shows a pearl gloss resulting from mutual interfering action between reflection and incident light from the platelet substrate/coating layer interface and reflection of incident light from the surface of the coating layer. [0015] The term "lipid modulus" as used herein is a term often used to describe deformations of solid, and in this case its use reflects the fact that the structurants add a solid-like nature to the lipid. This can aid in effectively balancing deposition, retention and spreading (feel) of the lipid blend on the skin. Lipid modulus is as determined using the Lipid Modulus Test described below in the Analytical Methods section below. [0016] As used herein, "non-platelet particle" refers to any shape of a particle in the personal care composition differing from the platelet shape including, but not limited to, configurations such as spherical, cylindrical configuration, rectangular, triangular, trapezoidal, semi-circular, hourglass, or irregular shapes. The non-platelet particles may have an aspect ratio define by A/B=or >0.20, the length A and the width being B, more preferably greater than 0.25, even more preferably greater than 0.3. Non-platelet particles and hydrophobically modified non-platelet particles that are suitable for use in the present application are disclosed in U.S. patent application Ser. No. 11/057,957, filed on Feb. 15, 2005 by Taylor et al., titled "Personal Care Compositions Containing Hydrophobically Modified Non-Platelet Particles." [0017] The term "personal care composition" as used herein, unless otherwise specified, refers to the compositions of the present invention, wherein the compositions are intended for topical application to the skin or hair. [0018] The term "rinsable composition" as used herein, means a composition designed to be rinsed off by a liquid such as water. After the composition is rinsed off, benefit agents remain on the skin. [0019] The term "safe and effective amount" as used herein means an amount of a compound, component, or composition sufficient to significantly induce a positive benefit, preferably a positive skin appearance or feel benefit, including independently the benefits disclosed herein, but low enough to avoid serious side effects, i.e., to provide a reasonable benefit to risk ratio, within the scope of sound medical judgment. Continue reading about Rinse-off personal care compositions containing high modulus lipids... 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