JPS61210054A - Production of esterified product of magnolia alcohol and fatty acid, and cosmetic containing esterified product of magnolia alcohol and fatty acid - Google Patents

Abstract

PURPOSE:To provide a cosmetic containing an esterified product derived from magnolia alcohol and a fatty acid, giving refreshing feeling to the skin, and free from stimulation to the skin. CONSTITUTION:The objective cosmetic contains one or more kinds of the esterified products derived from (A) magnolia alcohol which is a mixture of unsaturated higher alcohols of the composition shown in the Table and obtained by the hydrolysis of magnolia oil and (B) a fatty acid such as isopalmitic acid, isostearic acid, stearic acid, oleic acid, etc. The esterified product has high compatibility with various oils or solvents such as liquid paraffin, isopropyl myristate, castor oil, ethanol, etc., and is a lubricant free from oiliness and giving refreshing feeling to the skin.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel cosmetic oil. More specifically, the present invention relates to a method for producing an esterified product of jojoba alcohol and a fatty acid, and a cosmetic containing the esterified product of jojoba alcohol and a fatty acid.

In cosmetic oils, liquid oils generally include liquid paraffin, hydrocarbons such as squalane, animal and vegetable oils, and synthetic oils such as isopropyl myristate, and waxes such as beeswax, carnauba wax, and lanolin are used. There is.

When these oils are applied to the skin, they all have an oily feel. Recently, there has been a trend for cosmetics that have a light feel and are highly safe, and there is a desire for the development of light oils that have a good feel.

As a result of various studies to obtain a cosmetic that has a light feel and does not irritate the skin, the present inventors have found that an esterified product of jojoba alcohol and a fatty acid satisfactorily satisfies the above objectives. I found that. Jojoba alcohol is a hydrolysis product of jojoba oil consisting of an unsaturated higher alcohol composition as shown below, and is an oil with a very light feel.

0,, Hco50H6% 020 H390H62% CjuHo OH28% 0uH4vOH4% The present invention was completed based on such knowledge,
This is a cosmetic containing one or more esterified products of jojoba alcohol and fatty acids.

As the above-mentioned fatty acids, saturated branched, saturated straight-chain, unsaturated, and hydroxyl fatty acids can be used, and those having 12 to 24 carbon atoms are particularly suitable as oil agents.

Saturated branched fatty acids include impalmitic acid and isostearic acid, saturated straight chain fatty acids include stearic acid and behenic acid, and unsaturated fatty acids include oleic acid and linoleic acid.
12-hydroxystearic acid and the like are used as the hydroxy fatty acid.

Furthermore, the fatty acids used as raw materials may be used alone or in a mixture.

The esterified product used in the present invention can be produced by a conventional esterification reaction using a catalyst such as an acid, an alkali, or a metal, and there is no problem even if a hydroxyl group remains.

Synthesis examples of esters of jojoba alcohol and fatty acids (hereinafter referred to as the present ester) used in the present invention and various properties of the present ester are shown below using experimental examples.

Experimental Example I, Jojoba Alcohol/Isostearate Jojoba Alcohol (6.2 g, ca, 20 m
mol)) Isostearic acid (5,7f, 20m mo
l), and p-toluenesulfonic acid (0,07f,0
．． 4 mmol) in toluene (80s+t), Dean
Heating and refluxing was performed using a -3 tark trap until the calculated amount of water accumulated in the water separator. After the reaction was completed, deoxidation was carried out, followed by decolorization using a decolorizing agent, followed by deodorization by blowing steam under reduced pressure to obtain Sample 1, which was pale yellow and almost odorless. Sample 2.3 was synthesized in the same manner.

Table 1 shows the properties of each sample.

Table 1 Sample name Fatty acid in this esterified product Properties and composition of this esterified product Color, properties, C=O
,ashl isostearic acid pale yellow liquid 1
7252 Stearic acid white solid 1730
3 Behenic acid white solid 1728 The resulting esterified products (samples 1 to 3) are compatible with various oils or solvents such as castor oil/ethanol (in the case of sample 1) for liquid halafine and isopropyl myristate. It is an oily product that has a good texture and is not oily and has a light feel.

Next, the present invention will be explained in detail while showing examples.

In each case, cosmetics with excellent feel and performance were obtained. In addition, the content ratio is weight %.

Example 1. Skin cream A) Liquid paraffin 14.0 Squalane 5.0 Jojoba alcohol/isostearate 5.0 Stearic acid 5.0 Cetyl alcohol
1.0 glycerin monostearate 3,
0 Sorbitan monostearate 0.6 Polyoxyethylene sorbitan monostearate 0.4 B) Glycerin 5.0 Potassium hydroxide 0.5 Purified water
60.5 Preservatives
Appropriate amount C) Fragrance
Appropriate amount manufacturing method: 75 to 80% of each of component A and component B
After heating and dissolving at ℃, component B is added to component A and emulsified,
During cooling, component C is added and mixed uniformly, and the mixture is cooled to 30°C to obtain the desired skin cream.

Example 2. Emulsion A) Jojoba alcohol/isostearate 50 cetyl alcohol 5.0 squalane
2.0 glycerin monostearate
1.3 Sorbitan monooleate 1.5
Polyoxyethylene sorbitan monooleate 08B) Glycerin 6,0 xanthan gum
0.2 Purified water
78.2 Preservatives Appropriate amount 0) Flavoring agent Appropriate amount Manufacturing method:
The desired emulsion is obtained in the same manner as in Example 1.

Example 6 Lipstick A) and mustard oil 450 jojoba alcohol behenic acid ester 200 hexadecyl alcohol 10.0 beeswax
4.0 Kyan Deli La Row
60 Carnauba wax 50 Antioxidant Appropriate amount of preservative
Appropriate amount B) Color pace
8,5C) Fragrance
Proper amount production method: Component A is dissolved by heating and mixed uniformly. Component B is added to this and uniformly dispersed using a roll mill. This is melted again and component C is added.

After defoaming, it is poured into a mold and then rapidly cooled to harden to obtain the desired lipstick.

Next, in order to clarify the safety of the jojoba alcohol fatty acid ester of the present invention, a primary irritation test on the human body was conducted using a closed patch test.

That is, using Fin Chamber (Taisho Pharmaceutical Co., Ltd.), a 24-hour occlusion patch is applied to the side of the forearm layer. This test was conducted on 20 healthy people, and judgments were made 1 hour, 24 hours, and 48 hours after removing the bandage.
Items 3) to 3) show no irritation at all and are useful as oils for cosmetics.

In order to clarify the effects of the cosmetics of the present invention, a usage test was conducted on 40 general women aged 25 to 50, and a questionnaire survey was conducted using a double-blind method, focusing on the skin conditioning effects. Table 2 summarizes the results of using the skin cream containing jojoba alcohol and isostearate ester (!l[flN) and the skin cream of Example 1 in which jojoba alcohol and isostearate were replaced with liquid paraffin (control product) for one month. It was shown. In addition, no skin troubles occurred during the use test period.

Table 2. Judgment results of skin conditioning effect

Claims (2)

[Claims] (1) Method for producing an esterification product of jojoba alcohol and fatty acid. (2) Cosmetics containing one or more esterified products of jojoba alcohol and fatty acids.