JPS61152609A - Cosmetic composition - Google Patents

Abstract

PURPOSE:The title cosmetic having improved redispersibility and pearly luster- like appearance, obtained by blending a compound having a specific organic property value, a specific angle from an coorinate axis of the organic properties, and a specific melting point and two or more hydrophilic surface active agents in a specific ratio with water. CONSTITUTION:(a) One or more compound having 300-1,000 organic property value, <=26 deg. angle from coordinate axis of the organic properties, and <=50 deg.C melting point are nused as a pearl agent. The component a and (b) two or more hydrophilic surface active agents selected from a polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, and a polyoxyethylene derivative of natural fats and oils or wax in a ratio of the component a:b of 1:0.5-5 is blended with water, and, if necessary, (c) a polyhydric alcohol and/or (d) phytic acid, to give a cosmetic composition such as toilet lotion, etc., having improved redispersibility for a long period, capable of reviving pearly luster-like appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a cosmetic composition with good redispersibility and a pearlescent appearance.

(Background Art) It has been known that higher fatty acids, esters of higher fatty acids and higher alcohols, etc. are dispersed in lotions, emulsions, creams, shampoos, etc. to impart a pearlescent appearance.

Especially for lotions, myristic acid, palmitic acid,
It has been attempted to solubilize in water above the melting point using stearic acid, behenic acid, etc. and then cool it to precipitate crystals to develop a pearlescent appearance. The disadvantage is that the original beautiful pearlescent appearance disappears as agglomeration or repeated melting and precipitation due to temperature differences occurs.

That is, when the crystals that had settled out after being left for a long time were redispersed, it was difficult to reproduce the beautiful pearlescent appearance.

(Disclosure of the Invention) The present inventors have selected not only higher fatty acids but also a wider range of compounds in order to create a pearlescent appearance in lotion, and at the same time, have found that they have good redispersibility over a long period of time. The present invention was developed as a result of intensive research to develop a composition that reproduces a pearlescent appearance.

That is, the present inventors have discovered that in addition to conventionally known higher fatty acids such as myristic acid, palmitic acid, stearic acid, and behenic acid, a wide range of oils and fats, waxes, alcohols, and esters have a pearlescent appearance. After searching for compounds that express
10) A melting point of 50°C where the above organicity value is 300 or more and 1000 or less and the angle from the organic coordinate axis is 26° or less
It has been found that all of the above compounds (hereinafter referred to as pearling agents) have the ability to develop a pearlescent appearance.

However, in order to stably form a pearlescent appearance and achieve good redispersibility, the specific surfactant and its quantitative relationship with the pearling agent are important. After learning about this and conducting various studies, the composition of the present invention uses one or more types of pearl agents and two or more types of hydrophilic surfactants in specific ratios, and furthermore, polyhydric alcohol and phytic acid are added. do not prevent you from doing so.

The pearl agent used in the present invention includes higher fatty acids such as myristic acid, palmitic acid, stearic acid, behenic acid, lignoceric acid, etc.
/7: Stearyl alcohol, behenyl alcohol, cholesterol, etc., and the esters include cetyl palmitate, stearyl palmitate, cetyl stearate, ethylene glycol mono, di-stearyl, diethylene glycol mono, di-stearyl, These include triethylene glycol mono- and di-stearyl.

The hydrophilic polyoxyethylene alkyl ether used in the present invention includes polyoxyethylene oleyl ether (15-50 Eo) [polyoxyethylene (15-50 Eo)]
50-E/Shi addition) Abbreviation for oleyl ether.

[Similarly abbreviated below], polyoxyethylene lauryl ether (9 to 25 KO), polyoxyethylene cetyl ether (15 to 40 EO), etc. Polyoxyethylene sorbitan fatty acid esters include polyoxyethylene sorbitan monolauric ester (20 EO), etc. ),
These include polyoxyethylene sorbitan monopalmitate (20EO), polyoxyethylene sorbitan monostearate (20EO), etc., and polyoxyethylene derivatives of natural fats and waxes include polyoxyethylene hydrogenated castor oil (30~ 1010')% polyoxyethylene lanolin (30 EO), polyoxyethylene lanolin alcohol (20-40 EO), and the like.

The weight ratio of pearl agent and surfactant to achieve the present invention is 1:0.5 to 5, preferably 1:1.
~4. If the ratio is below the lower limit, solubilization will not take place, and if it is above the upper limit, a pearlescent appearance will not be formed, or even if it is formed, a lotion with a pearlescent pattern with good redispersibility will not be obtained.

Polyhydric alcohols that can be used in combination in the present invention include propylene glycol and 1.3-butylene glycol.

Glycerin, etc.

The addition of polyhydric alcohols acts as a solubilization promoter when small amounts of surfactants are used, and at the same time is effective in forming a pearlescent appearance.

Phytic acid, which can be used in combination in the present invention, is mainly used in the form of a 50% aqueous solution, and this addition is effective in preventing agglomeration of crystals and improving redispersibility.

In order to produce a lotion having a pearlescent pattern with good redispersibility using the composition of the present invention, it is necessary to solubilize the pearlescent agent under heating and at or below room temperature, as is conventionally done. After this, a water preservative, a polymeric thickener, an ethanol flavoring agent, and other trace ingredients may be added.

(Example) 1 0.05 parts of stearic acid, 0.1 part of polyoxyethylene oleyl ether (20EO), 0.1 part of polyoxyethylene sorbitan monopalmitate (20EO)
1.3 parts, 10 parts of butylene glycolyl, 0.0 parts of phytic acid.
05 parts were added to 90 parts of water, heated to 60°C to form a dissolved layer, and cooled to below room temperature to obtain a lotion having a pearlescent appearance. This lotion was tested at 5℃ and 40℃ for 6 cycles, and the pearlescent appearance was reproduced as it was.
No abnormalities such as aggregation were observed even after being left for several months.

The weight ratio of pearl agent to surfactant in this example is 1:4.

(Example) 2 0.05 part of palmitic acid, 0.05 part of behenic acid, 0.05 part of polyoxyethylene lauryl ether (20EO)
Part, polyoxyethylene hydrogenated castor oil (40EO) 06
08 parts, 30 parts of glycerin, 0.1 part of phytic acid and 6 parts of water.
After heating and dissolving the mixture, 5 parts of ethanol and 0.1 part of paraoxybenzoic acid were added to prepare a lotion.

The same test as in (Example) 1 was conducted on this product, but no abnormality was observed.

The weight ratio of pearl agent and surfactant in this example was 1:1.
It is 3.

(Example) 3 0.2 parts of behenyl alcohol, 0.4 parts of polyoxyethylene sorbicun monopalmitate (20EO), 0.2 parts of polyoxyethylene lanolin (30EO),
A lotion having a pearlescent pattern was obtained in the same manner as in Example 1 by adding 20 parts of propylene glycol and 0.1 part of phytic acid to 78 parts of water.

(Example) The same test as in 1 was conducted, but no abnormality was observed.

The weight ratio of pearl agent to surfactant in this example is 1:3.

(Example) 4 0.4 parts of ethylene glycol monostearyl, 0.2 parts of polyoxyethylene cetyl ether (20EO), 0.4 parts of polyoxyethylene lanolin alcohol (20EO).
A lotion having a pearlescent appearance was obtained in the same manner as in Example 1 by adding 2 parts, 10 parts of 1,3-butylene glycol, and 0.1 part of phytic acid to 80 parts of water.

(Example) A test similar to that in 1 was conducted, but an abnormality was observed.The weight ratio of pearl agent to surfactant in this example was 1:0.4.

[Brief Description of the Drawings] The drawing is an organic conceptual diagram by Fujita, and the shaded area indicates the range of the pearlescent agent of the present invention. Patent applicant: Mitsui Toatsu Chemical Co., Ltd.

Claims (1)

[Claims] 1) A melting point 5 whose main component has an organic value of 300 to 1000 and whose angle from the organic coordinate axis is 26° or less.
One or more compounds having a temperature of 0°C or higher, and two hydrophilic surfactants selected from the group consisting of polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, natural oil or fat, or polyoxyethylene derivatives of waxes. 1. A cosmetic composition, characterized in that the composition contains at least one species in water at a weight ratio of 1:0.5 to 5. 2) Claim 1 obtained by adding polyhydric alcohol
Cosmetic composition described in . 3) The cosmetic composition according to claim 1, which contains phytic acid. 4) The cosmetic composition according to claim 1, which contains a polyhydric alcohol and phytic acid.