JPH024709A - Cleaning composition - Google Patents

Abstract

PURPOSE:To obtain a readily producible cleaning composition, containing a specific saturated higher alcohol and specified higher fatty acid salt as principal ingredients and having excellent pearly lustrousness, temperature stability, detergency and mild reaction to the skin. CONSTITUTION:A cleaning composition, containing (A) a higher alcohol, containing a saturated hydrocarbon consisting essentially of 22C behenyl alcohol with >=80wt.%, preferably >=85wt.% purity thereof and (B) one or more higher fatty acid salts selected from alkaline metal, ammonium or alkanolamine salts of 0-22C saturated fatty acids and/or unsaturated fatty acids as principal ingredients, mass-producible in a short time at a low cost and capable of expressing improved pearly luster, excellent in hydrolytic stability with heat and alkalis with good feeling of use.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] This invention relates to skin cleansing compositions such as facial cleansers and body shampoos.

[Conventional technology]

In the past, for the purpose of increasing the commercial value of detergents such as facial cleansers and body shampoos, pearlescent luster has often been imparted to them. In order to impart such pearlescent luster, techniques have been adopted to crystallize pearlescent crystals such as higher fatty acids or ethylene glycol fatty acid esters. It is not easy to develop a formulation that satisfies detergency and temperature stability while simultaneously producing p+
The + value is in the alkaline region and is unstable, which is not preferable. Furthermore, in order to crystallize such higher fatty acids and ethylene glycol fatty acid esters as crystals with excellent pearlescent luster, a J) formation step, that is, a step of maintaining the temperature for a certain period of time, is required, making production difficult. It cannot be said that it is easy.

[Problem to be solved by the invention]

In this way, conventional techniques have not been able to develop cleaning compositions that are easy to produce, exhibit excellent pearlescent luster, have excellent temperature stability and excellent detergency, and have mild reactions to the skin. There was a problem that things could not be obtained, and the challenge was to solve this problem.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention adopts a method of producing a cleaning composition containing a saturated higher alcohol and a higher fatty acid salt as main components.

The details will be described below.

First, the saturated higher alcohol in this invention is mainly behenyl alcohol whose saturated hydrocarbon group has 22 carbon atoms, and its content is 80% by weight or more, preferably 85% by weight or more, and the saturated higher alcohol has 20 or more carbon atoms. Behenyl alcohol, which has a content of 90ffl% or more, is a substance that can be easily obtained, for example, by reducing fatty acids obtained from rapeseed oil and then distilling them, and has traditionally been used as a raw material for cosmetics, pharmaceuticals, etc. :1 is a highly purified product widely used.

Next, the higher fatty acid salt of the present invention is one or a mixture of two or more of alkali metal salts, ammonium salts, or alkanolamine salts of fatty acids consisting of both or one of saturated fatty acids and unsaturated fatty acids having 8 to 22 carbon atoms. Examples of materials that form such salts include inorganic bases such as sodium hydroxide and potassium hydroxide salts;
Examples include organic bases such as monoethanolamine, jetanolamine, and triethanolamine.

The higher fatty acid may be separately produced in advance or may be produced during the process of preparing the cleaning composition of the present invention.

Here, when blending the saturated higher alcohol and higher fatty acid salt, it is desirable to use a surfactant, and the surfactant can be one of anionic surfactants, amphoteric surfactants, and nonionic surfactants. One or two types can be used. That is, as an anionic surfactant, 1. Alkyl sulfate salt R, -0-5O,M (wherein R6 is an alkyl group or alkenyl group having 8 to 18 carbon atoms, M is an alkali metal, ammonium or (groups such as alkanolamine) ■, polyoxyethylene alkyl sulfate salt R, -
0-(CH2CH,0). SO3M (wherein R1 and M
is as described above. n is 1 to 5 on average) ■, dialkyl sulfosuccinate salt R, -0OC
-CH-5O,M R2-00C-CH3 (In the formula, R2 and M are as described above. R2 is also an alkyl group or alkenyl group having 8 to 18 carbon atoms) ■, Acyl isethionate R, -COOCH2CH2SO,M ( In the formula, R and M are as above.) ■, α-olefin sulfonate rl, CH=CI(CH2SO,M or R,CI(-CH2CH2SO3M H (in the formula, R1 and M are as above) Vl , N-anluglutamate R, CO-NH-CHOOM CHzCHgCOOMz (In the formula, R3 is an alkyl group or alkenyl group having 7 to 21 carbon atoms, M, and M2 are groups such as hydrogen, alkali metal, ammonium, or alkanolamine). , N-acylmethyltaurine salt CH.

R4CON CHz CHz S Oz M (R in the formula
1 is an alkyl group or alkenyl group having 10 to 18 carbon atoms. M
is as described above. ) ■, N-acylamino acid salt R1Co-N-(CH2), COOM (In the formula, R1 is an alkyl group or alkenyl group having 10 to 16 carbon atoms, and R6 is a straight or branched alkyl group having 1 to 4 carbon atoms. or hydrogen. M is as above. m is 1 or 2
Ampholytic surfactants include amino acid type (methyl alkylaminopropionate, alkylaminoethylglycine hydrochloride), hetain type (lauryldimethylaminoacetate hetain, 2-alkyl-N-carboxymethylhydroxydiethylimidazonium hequine) ), sulfonic acid type (N-lauryl-N, N-dimethylaminopropylsulfonic acid), nonionic surfactants include polyoxyethylene alkyl ether, glycerin fatty acid ester, sorbitan fatty acid ester (Span type)
, polyoxyethylene sorbicun fatty acid ester (Tw
een type), sucrose fatty acid ester, higher fatty acid alkanolamide, alkylamine oxide, etc. These surfactants are not limited to the above examples, and any surfactant can be used without any problem.

The blending ratio (weight ratio) of saturated higher alcohol and higher fatty acid salt is preferably in the range of 1:20 to 20=1. If the blending ratio of the saturated higher alcohol is less than this range, a pearlescent luster cannot be obtained, and if it is greater than this range, the detergency and feeling of use will deteriorate, which is not preferable.

Further, the blending ratio of behenyl alcohol is 1 to 30% by weight. This is because when the amount is less than 1% by weight, excellent pearlescent luster cannot be obtained, and on the other hand, when the amount is more than 30% by weight, the detergency and foaming power become poor.

Furthermore, it is desirable that the amount of higher fatty acid salt added is 1 to 50% by weight. Because it is less than 1% by weight or 50%
This is because when the amount exceeds the weight percentage, excellent pearlescent luster cannot be obtained.

The amount of surfactant blended is preferably 1 to 80% by weight, but this is less than 7% by weight or 80% by weight.
This is because when the amount exceeds 100%, excellent pearlescent luster cannot be obtained.

In addition to the above-mentioned ingredients, the cleaning composition of the present invention includes antiseptic sterilizers, antioxidant shavings, coloring agents, flavoring agents, superfat agents, moisturizing agents, etc., which are commonly used in facial cleansers, body shampoos, etc. Metal ion sequestering agents, various medicinal ingredients, etc. may be added as appropriate.

[Effect]

The saturated higher alcohol in this invention not only has the effect of developing pearlescent luster in a short time and the acid- and alkali-resistant effect, but also has the following properties:
It also exhibits the fatliquing effect unique to saturated higher alcohols.

[Example] The raw materials used in the Examples and Comparative Examples are listed below. It should be noted that all blending ratios are in weight %.

Saturated higher alcohol; ■Behenyl alcohol A (M1 surface weight 1<0 ■Behenyl alcohol B (1st table change M) Table 1 Higher fatty acid salt: ■Sodium coconut oil fatty acid ■Triethanolamine myristate surfactant: ■Polyoxyethylene [POE] (2) Sodium lauryl sulfate ■ Sodium lauryl sulfate ■ Sodium α-olefin sulfonate ■ N-Coconut oil fatty acid - triethanolamine glutamate ■ Sodium lauroyl sarcosine [Phase] Hetaine lauryl dimethylaminoacetate ■ 2-Alkyl- N-carboxymethyl-N-hydroxy.

Diethylimidazolium betaine @POE (10) Lauryl ether @POIE (20) Sorbitan monostearate ■ Sucrose laurate Wetting agent Others: ■ Glycerin ■ Propylene glycol Examples 1 to 8: Facial cleanser ( Examples 1-6) and body shampoos (Example 7.8) were prepared. The preparation method is to heat behenyl alcohol, higher fatty acid salt, surfactant, purified water and other ingredients to 80°C, mix uniformly, and then cool to 40°C. The resulting cleansing agent has excellent pearlescent luster immediately after preparation and can be used immediately as a facial cleanser, body shampoo, etc. In order to examine the properties of the obtained cleaning composition, a pearlescent test, a high temperature stability test of pearlescent luster, and a detergency test were conducted, and the results are summarized in Table 3.

Here, the methods and evaluation criteria for each test are as follows.

Pearl luster test: Visually judged in 5 grades: very good (5), excellent (4), fair (3), poor (2), very poor (1) Evaluate.

High-temperature stability test for pearlescent luster: The state of the sample after being left in a constant temperature room at 45°C for one month was evaluated according to the following criteria in Table 3. No change in pearl luster is observed (○ mark), a slight change is observed (△ mark), pearl luster has disappeared or has not been pearl luster since the time of preparation (
Evaluate in 3 stages (x mark).

Cleaning power test: A cleaning power test was conducted by 20 men and women, and the results were rated as good (+1),
Sensory evaluation in 3 stages: good (0), bad (-1),
Find the average value, 1.0 to 0.5 (O mark), 0.5 to
-○, 5 (△ mark), -0,5 to -1,0 (X mark) 3
Shown in stages.

Comparative Examples 1 and 2: Cleaning compositions were prepared in exactly the same manner as in Example 1, except that the formulations shown in Table 2 were used, and the same tests were conducted.
The obtained results are also listed in Table 3.

As is clear from Table 3, Comparative Examples 1 and 2 lacked pearlescent properties compared to Examples 1 to 8, and were gel-like or emulsion-like, so they lacked detergency and had poor usability.

[Effects] The cleaning composition of the present invention has few restrictions on manufacturing conditions and formulations, and can be easily manufactured in a short time. Moreover, not only is the production cost low, but mass production is also possible. In addition, it has excellent pearlescent properties and is also stable to hydrolysis due to heat and alkali, so no abnormality is observed in the pearlescent luster even after a long period of time at high temperatures. Not only can it be used in a wider range of pH values, but the saturated higher alcohol in the cleaning composition of this invention also provides a unique and good feeling of use, which is not found in conventional commercially available products. Many effects appear. Therefore, it can be said that the significance of this invention is extremely large.

Claims (1)

[Claims] (1) Mainly behenyl alcohol with a saturated hydrocarbon group having 22 carbon atoms, the purity of which is 80% by weight or more, preferably 85% by weight or more, and the content of saturated higher alcohol with 20 or more carbon atoms is 90% by weight or more. One or two alkali metal salts, ammonium salts, or alkanolamine salts of a fatty acid consisting of a higher alcohol and both or one of a saturated fatty acid and an unsaturated fatty acid having 8 to 22 carbon atoms.
A cleaning composition characterized by containing as a main component a higher fatty acid salt which is a mixture of more than one species.