 Resin denture base molding apparatus |
| In view of the aforementioned problems, it is an object of the present invention to provide an ... |
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| Dental material |
| OF PREFERRED EMBODIMENTS The foregoing object is achieved by impregnating communicating holes of a ... |
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| Dental mouthpiece and method of making same |
| OF PREFERRED EMBODIMENTS Referring to FIG. 1, there is seen an arch-shaped mouthpiece substrate 10.... |
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| Method for manufacturing a dental prosthesis |
| It is the object of the present invention to provide an improved method for manufacturing fiber ... |
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| Nozzle contact device of an injection machine |
| The present invention provides a nozzle contact device of an injection machine. The nozzle contact ... |
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| Process for providing a decorative transfer in a molded product |
| In a first aspect, the present invention pertains to a decorative transfer including a backing and ... |
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| Means for centrifugally casting a plastic tubular member |
| Referring now in more detail and by reference characters to the drawings which illustrate a ... |
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| Methods for emplacing and maintaining transmission lines |
| This invention provides an external housing or conduit in the form of a prelaid, continuous ... |
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| Hose reinforced with discontinuous fibers oriented in the radial direction |
| Referring to FIG. 1, hose 1 with a section removed illustrates a hose having fibers 2 oriented in ... |
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| Reinforced plastic tapered rod products and the method and apparatus for producing same |
| Referring now in more detail and by reference characters to the drawings which illustrate a ... |
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Cosmetic or dermatological composition comprising an oil-in-water emulsion based on oily globules provided with a lamellar liquid crystal coating
| Details |
Inventors: Ribier, Alain; Simonnet, Jean-Thierry; Griat, Jacqueline;
Assignee: L'Oreal (Paris, FR)
Primary Examiner: Bleutge; John C.
Assistant Examiner: Harrison; Robert H.
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Cosmetic or dermatological compositions comprising an oil-in-water type emulsion containing oily globules which are coated with a lamellar liquid crystal coating and are dispersed in an aqueous phase, in which each oily globule contains at least one lipophilic compound which is cosmetically or dermatologically active and is individually coated with a monolamellar or oligolamellar layer of at least one lipophilic surface-active agent, at least one hydrophilic surface-active agent, and at least one fatty acid, the coated oily globules having a mean diameter of less than 500 nanometers, preferably less than 200 nanometers, and the oily phase contains a basic agent in the dissolved state, exhibit good skin and hair penetration. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the context of the present invention, the term lipophilic active compound is understood to refer to the active compound per se when it is itself an oil or alternatively, if it is not, the active compound dissolved in an oil.
Oils which may be used are oils conventionally used as vehicles in cosmetic compositions, such as for example short-chain fatty acid triglycerides, silicone oils and the like.
The present invention provides emulsions having fatty phase droplets of extremely small size which are coated with an extremely fine mono- or oligolamellar layer.
The term oligolamellar layer is understood to refer to a layer comprising from 2 to 5 lipid lamellae.
Since the mean size of the coated oily globules is less than 500 nanometers and preferably less than 200 nanometers, their penetration into the intercorneocytic spaces, which are of comparable size, is greatly facilitated.
Preferably, the oily globules have a polydispersity index of less than 0.
1, as measured by a laser granulometer.
The active agent contained in or constituted by the oily globule may consequently be transported and delivered to the skin or hair at the site where its action will be the most effective.
According to a preferred embodiment of the invention, the lipophilic surface-active agent, the hydrophilic surface-active agent and the fatty acid each contain at least one saturated fatty chain having more than about 12 carbon atoms approximately.
Even more preferably, this fatty chain contains from 16 to 22 carbon atoms.
According to another preferred embodiment of the invention, the lipophilic surface-active agent has an HLB value of between about 2 and about 5.
As is well known, HLB (Hydrophilic-Lipophilic Balance) is understood to refer to the equilibrium between the size and force of the hydrophilic group and the size and force of the lipophilic group of the surface-active agent.
Examples of such lipophilic surface-active agents are sucrose distearate, diglyceryl distearate, tetraglyceryl tristearate, decaglyceryl decastearate, diglyceryl monostearate, hexaglyceryl tristearate, decaglyceryl pentastearate, sorbitan monostearate, sorbitan tristearate, diethylene glycol monostearate, the ester of glycerol and palmitic and stearic acids, polyoxyethylenated monostearate 2 EO (containing 2 oxyethylene units), glyceryl mono- and dibehenate and pentaerythritol tetrastearate
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Nonmetallic Processes 
