Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions
Reexamination Certificate
2000-11-07
2002-10-08
Krass, Frederick (Department: 1614)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
C424S401000, C424S484000, C424S485000, C424S486000, C424S070110, C424S070120, C424S070160, C424SDIG002, C514S063000, C514S772300, C514S880000, C514S951000, C524S731000, C524S267000
Reexamination Certificate
active
06461597
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable.
REFERENCE TO A MICROFICHE APPENDIX
Not applicable.
1. Field of the Invention
This invention relates to a cosmetic raw material, a cosmetic, and a cosmetic manufacturing method. More specifically, the invention relates to [a] a cosmetic raw material that is capable of uniformly dispersing a silicone or organic oil and crosslinked particles in a cosmetic; [b] a cosmetic [i] which consists of cosmetic raw material [a] and other cosmetic raw materials, [ii] in which a silicone oil or organic oil and crosslinked particles are uniformly dispersed, [iii] in which the touch on fingers and skin, spreading and feeling of use are good, [iv] which prevents unruly hair, stray hair, and tangling hair so that hair can easily be arranged, and [v] which can impart a fresh, dry feeling without any stickiness; and [c] a method for efficient manufacture of such cosmetic.
2. Background of the Invention
The use of silicone oils, organic oils, and crosslinked silicone particles as cosmetic raw materials for improving the feeling and slip properties of cosmetics on the skin, or for improving the feeling of use and slip properties of hair cosmetics, is known. The use of silicone oils or organic oils with crosslinked silicone parts in such applications is also known.
Examples of cosmetics containing silicone oils and crosslinked silicone particles include cosmetics which contain crosslinked silicone particles that have a three dimensional network structure and high viscosity or low-viscosity silicone oils, as shown in Japanese Patent Application Kokai No. Hei 1-165509, and Japanese Patent Application Kokai No. Hei-1-190757. Cosmetics which contain the crosslinked product of a hydrosilylation crosslinkable silicone composition and a low viscosity silicone oil are shown in Japanese Patent Application Kokai No. Hei 1-207354. A cosmetic which contains a silicone oil emulsion consisting of a crosslinked silicone product, a low viscosity silicone oil, a polyoxysilane modified silicone type surfactant and water, is shown in Japanese Patent Application Kokai No. Hei 3-79669. A foundation cosmetic material which contains a silicone oil emulsion of a low viscosity silicone oil and a silicone that is solid at room temperature, is shown in Japanese Patent Application Kokai No. Hei 3-271211. A skin cleansing agent which contains a silicone rubber and a silicone oil, is shown in Japanese Patent Application Kokai No. Hei 6-502646/U.S. Pat. No. 5,154,849, Oct. 13, 1992. A cosmetic consisting of a high-molecular weight silicone and a silicone rubber, is shown in Japanese Patent Application Kokai No. Hei 7-330537.
Hair cosmetics that contain silicone oils and crosslinked silicone particles are shown in Japanese Patent Application Kokai No. Hei 2-172906; Japanese Patent Application Kokai No. Hei 5-139932; and Japanese Patent Application Kokai No. Hei 10-36228. Hair cosmetics containing crosslinked silicone particles that contain a silicone oil are shown in Japanese Patent Application Kokai No. Hei 2-243612/U.S. Pat. No. 4,980,167, Dec. 25, 1990; and Japanese Patent Application Kokai No. Hei 5-262987.
Cosmetics that contain organic oils and crosslinked silicone particles are shown in Japanese Patent Application Kokai No. Sho 61-194009; Japanese Patent Application Kokai No. Sho 63-313710/EP 295886, Dec. 21, 1988; Japanese Patent Application Kokai No. Hei 7-258027; and Japanese Patent Application Kokai No. Hei 7-267820.
However, in these cosmetics, the silicone oils or organic oils and the crosslinked silicone particles used as raw materials are combined with other cosmetic raw materials. As a result, the crosslinked silicone particles are not sufficiently dispersed in the cosmetics. Furthermore, the silicone oils or organic oils used have a poor affinity for the crosslinked silicone particles, so that the intrinsic characteristics of the particles cannot be sufficiently exhibited. For any water based cosmetic, in particular, a sufficient shear force cannot be applied when the silicone oils or organic oils and the crosslinked silicone particles are dispersed in other cosmetic raw materials, and as a result, the stability of the cosmetics is insufficient, and the feel provided when the cosmetics are used is generally poor.
In the case of a hair cosmetic in which silicone oils or organic oils and the crosslinked silicone particles are used as cosmetic raw materials, the crosslinked silicone particles are not sufficiently dispersed in the hair cosmetic. Moreover, the affinity of the silicone oils or organic oils for the crosslinked silicone particles is poor, so that the intrinsic characteristics of the crosslinked silicone particles cannot be sufficiently exhibited. For water based hair cosmetics in particular, a sufficient shear force cannot be applied when the silicone oils or organic oils and the crosslinked silicone particles are dispersed in other hair cosmetic raw materials. As a result, the stability of the hair cosmetics is insufficient, and the feel experienced when the hair cosmetic is used is generally poor.
BRIEF SUMMARY OF THE INVENTION
The object of this invention is to provide [a] a cosmetic raw material capable of uniformly dispersing a silicone or organic oil and crosslinked particles in a cosmetic; [b] a cosmetic [i] which consists of such cosmetic raw material and other cosmetic raw materials, [ii] in which a silicone oil or organic oil and crosslinked particles are uniformly dispersed, [iii] in which the touch on fingers and skin, the spread of the cosmetic and the feeling of use are good, [iv] which prevents unruly hair, stray hair and tangling of hair, so hair can easily be arranged, and [v] which can impart a fresh, dry feeling without any stickiness; and [c] a method for the efficient manufacture of such cosmetic.
These and other features of the invention will become apparent from a consideration of the detailed description.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
Not applicable.
DETAILED DESCRIPTION OF THE INVENTION
The cosmetic raw material of the invention consists of a silicone oil or an organic oil emulsion containing crosslinked particles with a mean particle diameter of 0.05 to 100 &mgr;m. The particles are crosslinked by a hydrosilylation reaction of a liquid crosslinkable composition consisting of (A) an organic compound having at least two aliphatic unsaturated bonds per molecule, (B) a silicon containing organic compound having at least two hydrogen atoms bonded to silicon atoms in each molecule, (C) a hydrosilylation reaction catalyst, and optionally (D) an organopolysiloxane having at least one alkenyl group per molecule. The crosslinked particles are contained in droplets of the silicone oil or in droplets of the organic oil. The droplets have a mean particle size of 0.1 to 500 &mgr;m, and the droplets are dispersed in water. The particle diameter of the crosslinked particles is smaller than the particle diameter of the droplets of the silicone oil or the droplets of the organic oil.
According to one embodiment of the invention, the cosmetic raw material consists of an oil composition in which the crosslinked particles are dispersed in the silicone oil or in the organic oil, and the oil composition is obtained by removing water from the emulsion.
In another embodiment, the cosmetic of the invention consists of the cosmetic raw material which comprises the emulsion combined with other cosmetic raw materials.
In a further embodiment, the cosmetic of the invention consists of the cosmetic raw material which comprises the oil composition combined with other cosmetic raw materials.
In yet another embodiment, the cosmetic of the invention is prepared according to a method in which the cosmetic raw material consisting of the emulsion is combined with other cosmetic raw materials.
Kobayashi Kazuo
Masaru Ozaki
Morita Yoshitsugu
De Cesare Jim L.
Dow corning Toray Silicone Co., Ltd.
Krass Frederick
Ostrup Clinton
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