Unlock instant, AI-driven research and patent intelligence for your innovation.

Aqueous cosmetic preparation and method for producing same

A technology of cosmetics and preparations, which is applied in the field of aqueous cosmetic preparations, and can solve problems such as not providing technology/formula

Inactive Publication Date: 2011-08-17
FUJIFILM CORP
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] As for the case of mixing fatty acids and ceramides with cosmetics, at present, there is no guideline for the technique / formulation of mixing ceramide-containing particles (in a state of small particle size) into cosmetics at high concentrations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aqueous cosmetic preparation and method for producing same
  • Aqueous cosmetic preparation and method for producing same
  • Aqueous cosmetic preparation and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0297] The present invention is further specifically explained below through examples, but the present invention is not limited to the following examples, as long as it does not deviate from the gist of the present invention. Unless otherwise stated, "parts" are on a mass basis.

[0298] (Preparation of Ceramide Dispersion-1)

[0299] The components described in the following composition of oil phase liquid 1 were stirred at room temperature for about 30 minutes to prepare oil phase liquid 1 .

[0300] In preparing the aqueous phase liquid 1, the inulin lauroyl carbamate described in the following composition of the aqueous phase liquid 1 was added to pure water, heated to about 50° C., and sufficiently stirred and dissolved. After that, the remaining components were added thereto, and the temperature of the liquid was adjusted to 30°C.

[0301]

specific example 1-10

[0302] Ceramide 3B [natural ceramide, specific examples 1-10] 0.9 parts

specific example 1-7

[0303] Ceramide 6 [natural ceramide, specific examples 1-7] 1.1 parts

[0304] Oleic acid (melting point: 14°C) 0.4 parts

[0305] Ethanol [water-soluble organic solvent] 97.6 parts

[0306]

[0307]

[0308] The resulting oil phase liquid 1 (oil phase) and water phase liquid 1 (water phase) are micro-mixed with a KM-type micro-mixer 100 / 100 (which is a collision type) at a ratio (mass ratio) of 1:7 to obtain a liquid Ceramide dispersion-1 at a temperature of 30°C. The usage conditions of the micromixer are as follows.

[0309] -Microchannel-

[0310] oil side microchannel

[0311] Cross-sectional shape / width / depth / length = rectangle / 70μm / 100μm / 10mm

[0312] Aqueous side microchannel

[0313] Cross-sectional shape / width / depth / length = rectangle / 490μm / 100μm / 10mm

[0314] -Flow rate-

[0315] The water phase was added to the outer ring at a flow rate of 21.0 ml / min, the oil phase was added to the inner ring at a flow rate of 3.0 ml / min, and they were slightly mixed....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
electrical conductivityaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The present invention provides an aqueous cosmetic preparation which includes at least a ceramide analog-containing particle that contains at least a ceramide analog, has a volume average particle diameter of from 2 nm to 150 nm and the particle is dispersed in an aqueous phase as an oil-phase component, and a fatty acid having 10 to 30 carbon atoms or salt thereof. The aqueous cosmetic preparation satisfies at least either a condition where the pH is 5.5 or more or a condition where the electric conductivity is 5.0 mS / cm or less.

Description

technical field [0001] The present invention relates to an aqueous cosmetic preparation and a process for preparing such an aqueous cosmetic preparation. Background technique [0002] Ceramides play an important role in moisturizing by being present in the stratum corneum of the skin and forming the lipid barrier needed to retain moisture. Ceramides in the stratum corneum are produced by the degradation of cerebrosides by an enzyme called cerebrosidase. It is known that a part of ceramide is converted into phytosphingosine and sphingosine with an enzyme called ceramidase, and they are important agents for regulating cell proliferation and differentiation. There are seven kinds of ceramides in human skin, and each plays a different role. [0003] However, since ceramide is a highly crystallizable substance with low solubility in other oil solutions and precipitates and crystallizes at low temperatures, it is difficult to maintain stability when it is added to cosmetics. Al...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/68A61K8/36A61Q19/00
CPCA61K8/06A61K8/062A61K2800/21A61K8/361A61Q19/00A61K8/68A61K8/36
Inventor 田代朋子森久容芹泽慎一郎中村善贞
Owner FUJIFILM CORP