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

Liquid composition

A liquid composition and group technology, applied in the direction of cosmetics, cosmetic preparations, dressing preparations, etc., can solve the problems of reduced dispersibility and reduced dispersibility

Inactive Publication Date: 2015-07-22
株式会社美丽伴
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, improved dispersibility of such modified peptides was obtained at pH values ​​of 7.0 or higher, and in some cases, dispersibility of such modified peptides decreased with decreasing pH
In some cases, the addition of materials known as cationic surfactants also reduces the dispersibility of this modified peptide

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
  • Liquid composition
  • Liquid composition
  • Liquid composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0103] Hereinafter, the present invention will be described more specifically with reference examples, but it should not be construed as limiting the present invention.

[0104] (Scheme for modified peptide (Ia))

[0105] The reduction step, the step of mixing an oxidizing agent, the solid-liquid separation step, the collection step, the hydrolysis step, and the preparation step described below are carried out to obtain a transparent solution in which the side chain represented by the formula (Ia) (n=1) is dispersed Group modified peptide (Ia).

[0106] restore steps

[0107]Merino wool that has been cleaned with a neutral detergent and dried is cut into pieces of about 5 mm. A mixture of 5.0 parts by weight of the wool flakes, 15.4 parts by weight of a 30 wt% sodium thioglycolate aqueous solution, and 8.5 parts by weight of a 6 mol / L aqueous sodium hydroxide solution was prepared, and the water was further mixed to obtain a liquid to be processed, which The total amount is...

Embodiment 3a and 3b

[0126] (Examples 3a and 3b, Reference Example 1, Examples 4a and 4b, and Reference Example 2)

[0127] As shown in Tables 3 and 4 below, the liquid composition was prepared by mixing the modified peptide (Ia) solution, cetyltrimethylammonium chloride or stearyltrimethylammonium chloride, and water, and adding citric acid Or arginine to adjust pH and prepare.

[0128] [table 3]

[0129]

[0130] [Table 4]

[0131]

[0132]

[0133] Visually observe the liquid compositions of Examples 3a and 3b, Reference Example 1, Examples 4a and 4b, and Reference Example 2 ( image 3 are graphs showing the liquid compositions of Examples 3a and 3b, Reference Example 1, Examples 4a and 4b, and Reference Example 2). There was no difference in transparency between the composition of Reference Example 1 (pH 9.0) and the compositions of Examples 3a and 3b (pH less than 7.0). The dispersibility of the modified peptide (Ia) in the compositions of Examples 3a and 3b was substantially the...

reference example 3

[0134] (Reference Examples 3a to 3f)

[0135] The modified peptide (Ia) solution was mixed with water, and the pH of the mixture was adjusted with citric acid or arginine. In Reference Examples 3a, 3b, 3c, 3d, 3e, and 3f, the pH was adjusted to 4.5, 5.5, 5.8, 7.3, 9.0, and 10.0, respectively. In Reference Examples 3a to 3f, neither the long-chain alkyltrimethylammonium salt nor the N-long-chain alkylpyridinium salt was added.

[0136] The liquid compositions of Reference Examples 3a to 3f were visually observed ( Figure 4 are graphs showing the liquid compositions of Reference Examples 3a to 3f). At pH less than 7.0, a gradual decrease in the dispersibility of the modified peptide (Ia) was observed.

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
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

Provided is a composition in which the dispersibility of a specific modified peptide is less likely to decrease at a pH of less than 7.0. The cosmetic composition contains a modified peptide having one or more side chain groups including one or more units selected from the group consisting of a structure represented by formula (Ia): —S—S—(CH2)n—COOH, wherein n is 1 or 2, a structure represented by formula (Ib): —S—S—CH(CH3)—COOH, a structure represented by formula (Ic): —S—S—CH(COOH)—CH2—COOH, and salts of these structures; and a long-chain alkyltrimethylammonium salt or an N-long-chain alkylpyridinium salt, wherein the ratio of the total content of the long-chain alkyltrimethylammonium salt and the N-long-chain alkylpyridinium salt to the content of the modified peptide is 0.5 or more, and the cosmetic composition has a pH of less than 7.0.

Description

technical field [0001] The present invention relates to liquid compositions containing specifically modified peptides. Background technique [0002] Since peptides obtained by hydrolysis of proteins are expected to be effective in repairing and conditioning hair, they are added to compositions for hair use. Research has also been carried out to improve the effect of these peptides and to provide them with additional functions, among which are known peptide derivatives obtained by cationization, acylation or silylation. JP 2010-132595A and JP 2012-224572A disclose a peptide derivative for use in hair treatment agents, wherein the peptide derivative is a modified peptide obtained by using thioglycolate, mercaptopropionic acid Salt, thiolactate salt, or thiomalate salt are obtained by introducing carboxymethyldithio or other groups into peptides. Such modified peptides having a carboxyl group in the introduced group have improved dispersibility in water compared to the peptid...

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): A61K8/64A61Q5/12A61Q5/00A61Q5/02
CPCA61K2800/59A61K8/34A61Q5/00A61K8/64A61K8/416A61K8/4926A61Q5/02A61Q5/12
Inventor 松本尚人堀井嗣哲西尾彩
Owner 株式会社美丽伴