Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2000-02-03
2001-09-04
Gupta, Yogendra N. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S119000, C510S130000, C510S137000, C510S158000, C510S421000
Reexamination Certificate
active
06284718
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a composition for topical use, containing an oxyethylenated acetylenic diol, and to its cosmetic use. Furthermore, the invention relates to removing make-up from and/or cleansing the skin, the hair and/or mucous membranes.
2. Discussion of the Background
A make-up-removing composition is expected to be able to remove all kinds of make-up products, e.g., lipstick, powder, eye shadow, foundation, etc., without damaging the skin, and leaving the skin clean and soft. Many make-up-removing products have aqueous bases, e.g., aqueous, aqueous-alcoholic, aqueous-glycolic lotions, and transparent aqueous gels. The products contain dissolved surfactants that facilitate make-up removal by placing the make-up products in suspension. These surfactants should have good make-up removing efficacy, good skin tolerability, and they should provide good stability to the composition containing them.
A surfactant which is effective for cleansing or removing make-up, such as a anionic surfactant, is usually tolerated poorly by the skin. In contrast, a mild surfactant, such as a nonionic surfactant, often has an insufficient detergent activity. Regarding the nonionic surfactants, better make-up-removing efficacy can be obtained by increasing the amount of the surfactant in the composition. However, increasing the amount of the surfactant may lead to stability problems, e.g., recrystallization, coloration, and poor fastness with respect to light and temperature.
Therefore, a need remains for a relatively non-irritant and nonionic surfactant that has good make-up-removing properties at low concentrations.
The document U.S. Pat. No. 3,268,593 describes the use of oxyethylenated acetylenic diols as surfactants and detergents. However, the quantity of these diols that are required to be effective is unsatisfactorily high and thus can lead to poor tolerability by the skin.
SUMMARY OF THE INVENTION
It has now been discovered that among the oxyethylenated acetylenic diols, those having a small number of oxyethylenated groups were the most efficient, even in a low amount, for removing make-up and/or for cleansing the skin, mucous membranes and/or the hair. However, these weakly oxyethylenated diols are difficult to incorporate in topical compositions because they have a low water solubility. The present inventors have discovered that by combining the diols with a amphiphilic compound having an hydrophillic-lipophillic balance (HLB) greater than or equal to 15, it was possible to incorporate the oxyethylenated acetylenic diols easily in a topical composition.
An object of the invention is thus a composition for topical use, containing, in a physiologically acceptable medium, from 0.01 to 0.5% by weight relative to the total weight of the composition, of one or more oxyethylenated acetylenic diol of formula (I):
in which:
R and R′ represent, independently of each other, an alkyl radical containing from 1 to 10 carbon atoms;
n and m represent a number ranging from 0 to 10, and the sum n+m is from 2 to 10, and at least one amphiphilic compound for dissolving the oxyethylenated acetylenic diol having an HLB of greater than or equal to 15.
The compounds of formula (I) make it possible to obtain compositions which have lasting stability and which are very well tolerated, in particular on account of the efficacy of these compounds at low percentages. In addition, these compounds possess good make-up-removing and cleansing efficacy at low percentages.
Another object of the invention is the cosmetic use of the composition as defined above for cleansing and/or removing make-up from the skin, mucous membranes (lips), the hair and/or the eyes.
Another object of the invention is a cosmetic process for cleansing and/or removing make-up from the skin, mucous membranes, the hair and/or the eyes, characterized in that a composition as defined above is applied to the skin, mucous membranes, the hair and/or the eyes.
DETAILED DESCRIPTION OF THE INVENTION
In formula (I), the radicals R or R′ can represent, for example, an ethyl, methyl, propyl, isopropyl, butyl and/or an isobutyl radical. According to one preferred embodiment of the invention, R and R′ are identical.
In the compound of formula (I), n and m can be integers or non-integers.
According to one preferred embodiment of the invention, the diol of formula (I) is chosen from oxyethylenated derivatives of 2,4,7,9-tetramethyl-5-decyne-4,7-diol (formula (I) with R=R′=isopropyl), sold by the company Air Products under the name Surfynol, and more especially 2,4,7,9-tetramethyl-5-decyne-4,7-diol oxyethylenated with 3.5 mol of ethylene oxide, sold under the name Surfynol 440.
The amount of oxyethylenated acetylenic diol in the composition of the invention preferably ranges from 0.01 to 0.5% and preferably from 0.05 to 0.5% by weight relative to the total weight of the composition. These ranges include all specific values and subranges there between, including 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, and 0.45% by weight.
The amphiphilic compound dissolving the oxyethylenated acetylenic diol can be chosen in particular from compounds which have a solubility in water to at least 5% by weight. Such a compound has an HLB of greater than or equal to 15 and can be ionic, nonionic or amphoteric. It is preferably a nonionic compound.
Nonionic amphiphilic compounds which can be used in the composition of the invention are, for example, alkoxylated or glycerolated alkenyl succinates, such as hexadecenyl succinate 18 EO sold by the company ICI under the name Arlatone 8016, and polyglycerol dodecenyl succinate 3 EO sold by the company BASF under the name Cremophor COS; block copolymers of ethylene oxide and of propylene oxide, such as the Poloxamer products; fatty alkyl ethers of a sugar, such as allylpolyglucosides; sorbitan fatty esters and oxyethylenated sorbitan fatty esters, such as sorbitan laurate 20 EO (Polysorbate 20); oxyethylenated glycerol esters such as the triester of acetic acid and glycereth-7 (glycereth-7 triacetate), and mixtures thereof.
The amount of solubilizing amphiphilic compound can vary within a wide range depending on the amount of acetylenic diol present in the composition and can range, for example, from 0.001 to 10% and preferably from 0.01 to 5% by weight relative to the total weight of the composition. These ranges include all specific values and subranges there between including 0.005, 0.015, 0.025, 0.075, 0.1, 0.5, 0.75, 1, 3, and 4.5% by weight. According to one preferred embodiment of the invention, the weight ratio between the oxyethylenated acetylenic diol and the solubilizing amphiphilic compound preferably ranges from 1:10 to 10:1 and preferably from 1:2 to 2:1. The composition of the invention intended for topical application contains a physiologically acceptable medium, i.e. a medium which is compatible with the skin, including the scalp, mucous membranes and/or the eyes and can constitute in particular a cosmetic and/or dermatological composition.
The composition can be in any pharmaceutical form normally used in cosmetics and dermatology. In particular, the composition may be in the form of an optionally gelled aqueous solution; a dispersion, such as a lotion which is optionally a two-phase lotion; an emulsion obtained by dispersing a fatty phase in an aqueous phase (O/W), (W/O), a triple emulsion (W/O/W or O/W/O), or a vesicular dispersion of ionic and/or nonionic type. The present composition is prepared using procedures well-known to those of ordinary skill in the art.
The composition of the invention can contain, for example, a lotion, a gel, a milk, a make-up-removing lotion or milk, a cleansing lotion or milk, a shampoo, or a shower gel.
The composition according to the invention can comprise a fatty phase based on animal, plant, mineral, silicone, fluoro and/or synthetic oil. The fatty phase can also contain any other fatty substance liable to be present in the fatty phase, such as, for example, fatty acids, fatty alcohols
Boyer Charles
Gupta Yogendra N.
L'Oreal
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
LandOfFree
Composition for topical use containing an acetylenic diol,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composition for topical use containing an acetylenic diol,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition for topical use containing an acetylenic diol,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2440990