Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Hair coloring
Reexamination Certificate
1999-08-31
2002-10-15
Travers, Russell (Department: 1617)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Hair coloring
C514S937000, C424S070110
Reexamination Certificate
active
06464967
ABSTRACT:
This application claims priority to French application FR 98 12043, filed Sep. 25, 1998.
The present invention relates to a composition for making up keratinous fibres, especially human hair and lashes, which comprises at least one polyolefin wax. The invention additionally relates to the use of this composition for making up keratinous fibres and to a method of making up these fibres. The makeup composition and the makeup method of the invention are intended more particularly for substantially longitudinal keratinous fibres such as the lashes, eyebrows and hair, including false eyelashes and hairpieces. More especially, the invention relates to a mascara.
Mascaras are at present prepared in accordance with two types of formulation: aqueous mascaras, referred to as cream mascaras, which are in the form of an emulsion of waxes in water; and anhydrous mascaras or mascaras with a low water content, referred to as waterproof mascaras, which are in the form of dispersions of waxes in solvents.
It is known to employ various waxes for the formulation of mascaras, such as those described in the document WO-A-91/12793. Depending on their nature, these waxes impart different makeup properties to the mascara. For example, carnauba wax imparts hardness to the film which is deposited on the lashes, whereas beeswax provides good adhesion of the film to the lashes, although in this case the lashes have a tendency to stick together.
In order to obtain optimum makeup properties, it is possible to use mixtures of waxes, as is described in the document WO-A-95/15741. However, the mascaras obtained may not always be easy to apply to the lashes with the current applicators such as mascara brushes: when the mascara is applied to the lashes, contact of the composition with the lash may leave a clinging and dragging sensation. Moreover, when the mascara comprises waxes which are too hard, it may be difficult to work the deposit of product over the lashes using the brush, which can render it difficult either to control making up or to obtain an even coverage of the lashes. Moreover, a rigid film of mascara leaves the user with an uncomfortable sensation and has a tendency to crumble over time, which opposes the production of a makeup featuring a good hold.
The aim of the present invention is to provide a composition for making up keratinous material, and especially fibres such as the lashes, in the form of a wax-in-water emulsion which can go readily onto the keratinous material and which can lead, after application, to a homogeneous makeup which is comfortable to wear and which exhibits a good hold.
The inventors have discovered that a composition of this kind can be obtained by using at least one specific polyolefin wax. A creamy composition can be obtained which can be easy to apply to keratinous material. The made-up keratinous material can be well coated, in a homogeneous fashion. Moreover, the composition can glide well on the lashes and can be easy to work using the brush. The deposit of the makeup product on the lashes therefore can make it possible to modulate the desired makeup with ease on the lashes and, in particular, to control the amount of product to be deposited on the lashes. Furthermore, the polyolefin wax can be highly compatible with the waxes which are presently used in mascaras, which makes it possible to use the polyolefin wax in a mixture with these common waxes without introducing any particular constraint.
The present invention therefore provides a composition for making up keratinous fibres, in the form of a wax-in-water emulsion, characterized in that it comprises at least one polyolefin wax resulting from the homopolymerization of alpha-olefins having at least 10 carbon atoms, the at least one wax having a melting point ranging from 50 to 80° C.
The invention also provides a mascara product comprising a reservoir, which contains a mascara composition, and a brush for applying the above-defined composition to keratinous fibres, especially the lashes.
The invention additionally provides a method of making up keratinous fibres, especially the lashes, which comprises applying a composition as defined above to the keratinous matter.
The invention provides, furthermore, for the use of a composition as defined above to obtain a makeup which is homogeneous and/or easy to apply and/or which has a good hold.
The invention additionally provides for the use of a polyolefin wax as defined above in a composition for making up keratinous fibres in the form of a wax-in-water emulsion.
The polyolefin wax preferably used in the composition of the invention is obtained from the homopolymerization of an alpha-olefin corresponding to the general formula R—CH═CH
2
in which R denotes an alkyl radical having 10 to 50 carbon atoms and preferably 25 to 50 carbon atoms or mixtures thereof. R is preferably a linear alkyl radical. According to the invention, the homopolymerization of an alpha-olefin means the polymerization of monomers consisting essentially of an alpha-olefin or of a mixture of alpha-olefins as defined above.
The polyolefin wax preferably has a needle penetration, measured at 44° C., which ranges from 15 to 120, more preferably from 100 to 120 and, most preferably, from 105 to 115. The polyolefin wax preferably has a melting point ranging from 50° C. to 60° C.
The polyolefin wax can have a number-average molecular weight ranging from 400 to 3000, preferably from 2000 to 3000 and, more preferably, from 2500 to 2700.
Polyolefin waxes of this kind are described in the U.S. Pat. Nos. 4,060,569 and 4,239,546, the disclosures of which are specifically incorporated by reference herein. These waxes are sold in particular under the names “PERFORMA V® 103”, “PERFORMA V® 253” and “PERFORMA V® 260” by the company Petrolite.
These waxes have the following characteristics:
PERFORMA V ®
PERFORMA V ®
PERFORMA V ®
103
253
260
melting point (ASTM Standard D 36)
74° C.
67° C.
54° C.
number-average molecular weight
2800
520
2600
polydispersity of the molecular weight
6
8
11.5
density measured at 25° C. (ASTM Standard D 792)
0.92 g/cm
3
0.92 g/cm
3
0.90 g/cm
3
hardness (needle penetration-ASTM standard D 1321) at
5
7
12
25° C.
hardness (needle penetration-ASTM standard D 1321) at
20
—
110
44° C.
viscosity at 99° C. (ASTM Standard D 3236)
0.345 Pa · s
0.006 Pa · s
0.358 Pa · s
(345
(6 centipoises)
(358
centipoises)
centipoises)
The polydispersity of the molecular weight corresponds to the ratio of the weight-average molecular weight to the number-average molecular weight.
The needle penetration of the waxes is determined in accordance with the French standard NF T 60-123 or the American standard ASTM D 1321, at the temperature of 44° C. In accordance with these standards, the needle penetration is the measurement of the depth, expressed in tenths of a millimetre, to which a standard needle, weighing 2.5 g, which is placed in a mobile apparatus weighing 97.5 g and is placed on the wax to be tested, for 5 seconds, penetrates into the wax.
The polyolefin wax preferably has a density ranging from 0.85 to 0.95 g/cm
3
.
In the composition of the invention the at least polyolefin wax can generally be present in an amount ranging from 0.1% to 20% by weight relative to the total weight of the composition, and preferably from 0.5% to 12% by weight.
The composition of the invention may comprise, in addition to the above-defined polyolefin wax, one or more additional waxes, which can be selected from waxes of animal origin, waxes of plant origin and waxes of synthetic origin.
The additional waxes which can be used in the composition of the invention preferably have a melting point of between 40 and 110° C., inclusive, and a needle penetration ranging from 1 to 217. The needle penetration of the waxes is determined in accordance with the French standard NF T 60-123 or the American standard ASTM D 1321, at the temperature of 25° C. In accordance with these standards, the needle penetration is the measurement of the depth, expressed in tenths of a millimetre, to which a standard needle, weig
Berman Alysia
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
L'Oreal
Travers Russell
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