Method for producing cosmetic, method for preparing gel for cosmetics, and method for reducing quantity of high-molecular thickener added to starting materials of cosmetic

A polymer thickener and cosmetic gel technology, which is applied in the field of cosmetics manufacturing, can solve the problems of increased viscosity of cosmetics, difficult cosmetic gelation, uncomfortable use of cosmetics, etc., to improve the feeling of use and reduce the amount of cosmetics. Effects of peeling and dripping, suppressing increase in viscosity of cosmetics

Active Publication Date: 2014-02-05
NISSAN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if the amount of polymer thickener added to the cosmetic is too much, it will not be easy to gel the cosmetic evenly due to the increase in the viscosity of the cosmetic.
In addition, the polymer thickener is also the cause of skinning (よれ) and liquid dripping in the cosmetics, resulting in an uncomfortable feeling of use in the cosmetics

Method used

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  • Method for producing cosmetic, method for preparing gel for cosmetics, and method for reducing quantity of high-molecular thickener added to starting materials of cosmetic
  • Method for producing cosmetic, method for preparing gel for cosmetics, and method for reducing quantity of high-molecular thickener added to starting materials of cosmetic
  • Method for producing cosmetic, method for preparing gel for cosmetics, and method for reducing quantity of high-molecular thickener added to starting materials of cosmetic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0152] Hereinafter, the present invention will be more specifically described by way of examples and comparative examples, but the present invention is not limited to the following examples.

[0153] In addition, the meanings of the abbreviations used in the following examples and the compounds used are as follows.

[0154] Gly: Glycine

[0155] His: Histidine

[0156] Carboxyvinyl polymer: Carbopol 940 (manufactured by ITO Co., Ltd.)

[0157] TEA: Triethanolamine (manufactured by Junsei Chemical Co., Ltd.)

[0158] PG: propylene glycol

[0159] CMC: Carboxymethylcellulose (manufactured by Asone Co., Ltd.)

[0160] In the following tables, "◯" indicates that gelation occurred, "×" indicates that gelation did not occur, and "-" indicates that it was not performed.

[0161] In addition, in the present invention, although eluate (solvent separation) is generated on the gel, the gel can be used for the production of cosmetics.

Synthetic example 1

[0162] [Synthesis Example 1: Synthesis of N-palmitoyl-Gly-His]

[0163] In a 500mL 4-neck flask, put 14.2g (91.6mmol) of histidine, 30.0g (91.6mmol) of N-palmitoyl-Gly-methyl ester, 300g of toluene, and add 28% methanol solution of sodium methoxide as a base 35.3 g (183.2 mmol), heated to 60°C in an oil bath and continued stirring for 1 hour. Then, it was taken out from the oil bath and left to cool to 25° C., reprecipitated with 600 g of acetone, and filtered. The solid obtained at this time was dissolved in a mixed solution of 600 g of water and 750 g of methanol, 30.5 mL (183.2 mmol) of 6N hydrochloric acid was added thereto for neutralization, and a solid was precipitated, followed by filtration. Next, the obtained solid was dissolved in a mixed solution of 120 g of tetrahydrofuran and 30 g of water at 60°C, 150 g of ethyl acetate was added, and the mixture was cooled from 60°C to 30°C. Then, the precipitated solid was filtered. The obtained solid was heated to 60° C. i...

Embodiment 1

[0164] [Example 1: Evaluation test of hydrogelation ability of carboxyvinyl polymer, TEA, N-palmitoyl-Gly-His]

[0165] Add N-palmitoyl-Gly-His synthesized in Synthesis Example 1 to a threaded tube (Maruem No.5, manufactured by Maruem Co., Ltd.) so that the concentration of N-palmitoyl-Gly-His is 0.1 to 1.0 wt% (w / w), the concentration of TEA is 0.015-0.09wt% (w / w), heated to 80-100°C using a heating block constant temperature bath (manufactured by Japan Genetics Co., Ltd.), and visually confirmed that the transparent dispersion is achieved. On the other hand, a carboxyvinyl polymer was added to a threaded tube (Maruem No.5, manufactured by Maruem Co., Ltd.) to a concentration of 0.025 to 0.15 wt% (w / w), and a heating block constant temperature bath (Japan Genetics Co., Ltd.) heated to 80°C. In the carboxyvinyl polymer in the heated state, add the TEA aqueous solution of N-palmitoyl-Gly-His in the heated and dispersed state at a weight ratio of 1:1, and stir with a vortex mix...

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Abstract

The present invention provides a method for producing a cosmetic, a method for preparing a gel for cosmetics, and a method for reducing the quantity of a high-molecular thickener to be added to starting materials of a cosmetic. The present invention relates to: a method for producing a cosmetic, said method comprising adding to starting materials of a cosmetic, in addition to a high-molecular thickener, at least one kind of a lipid peptide-type gelling agent, which comprises a low-molecular lipid peptide or a salt thereof, at a ratio of 0.1-0.5 wt% relative to the mass of the high-molecular thickener, and thus forming a thickening gel; a method for preparing a gel for cosmetics, said method comprising adding to an aqueous vehicle of a cosmetic a high-molecular thickener and at least one kind of a lipid peptide-type gelling agent, which comprises a low-molecular lipid peptide or a salt thereof, at the ratio as described above, and thus forming a gel; and a method for reducing the quantity of a high-molecular thickener to be added to starting materials of a cosmetic, said method comprising adding to the starting materials of the cosmetic, in addition to a high-molecular thickener, at least one kind of a lipid peptide-type gelling agent, which comprises a low-molecular lipid peptide or a salt thereof, at the ratio as described above.

Description

technical field [0001] The present invention relates to a method for producing cosmetics, a method for preparing a gel for cosmetics, and a method for reducing the amount of polymer thickener blended into cosmetic raw materials. Background technique [0002] Various additives have been added to cosmetics in order to impart various effects such as moisturizing effect, antiseptic effect, and thickening effect to cosmetics. For example, in order to make cosmetics have a thickening effect, it is necessary to mix common polymer thickeners such as carboxyvinyl polymers in the cosmetics. [0003] However, if the amount of the polymer thickener added to the cosmetic is too much, it will not be easy to gel the cosmetic uniformly due to the increase in the viscosity of the cosmetic. In addition, polymer thickeners are also the cause of peeling (よれ) and liquid dripping in cosmetics, resulting in an uncomfortable feeling of use in cosmetics. Summary of the invention [0004] The pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/64A61K8/02A61K8/73A61K8/81A61Q19/00C09K3/00
CPCA61K8/8147A61K8/731A61K2800/10A61K2800/594A61K2800/48A61Q19/00A61K8/042A61K8/64A61K8/73A61K8/02A61K8/81
Inventor 松本圭吾井本鹰行岩间武久
Owner NISSAN CHEM CORP
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