JPS63196692A - Pearl gloss composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a pearlescent composition that is incorporated into various household or industrial cleaning products.

[Conventional technology]

BACKGROUND OF THE INVENTION Conventionally, pearlescent luster has often been added to cleaning agents such as hair shampoos, body shampoos, and liquid soaps in order to give consumers a sensual good impression. Therefore, the method for effectively imparting desirable pearlescent luster to such detergents, etc. generally involves crystallizing the pearlescent agent in the final composition, and involves controlling the composition of the crystallization system, crystallization rate, etc. This is an attempt to control crystal growth by changing the

However, in this method of crystallizing the pearlescent substance in the final composition, that is, in the state of the product, the crystallization conditions are extremely limited, and there is little room for taking measures to improve the luster. Recently, a method of forcibly mixing and dispersing a two-component system of monoethanolamide and ethylene glycol dihigher fatty acid ester in an aqueous medium has been disclosed, for example, in Japanese Patent Publication No. 47-804. There is. Even with such mixing and dispersion methods, there are limitations to the concentration of the resulting dispersion, non-uniform crystal sizes of the resulting pearlescent material, and problems with ethylene glycol dihigher fatty acid ester. Since there are drawbacks such as poor hydrolytic stability due to alkali, etc., there is no guarantee that a product that is practically satisfactory will be obtained.

[Problem that the invention seeks to solve]

As described above, the problem with conventional techniques is that it has not been possible to obtain a composition that has a good feeling of use, thermal stability, and hydrolytic stability due to alkali, and can also express excellent pearlescent luster. was there.

[Means for solving problems]

In order to solve the above problems, this invention has a carbon number of 22
This method employs a method of forming a pearlescent composition comprising a saturated higher alcohol and a surfactant. The details will be described below.

First, the saturated higher alcohol of the present invention preferably has a purity of 80% or more, preferably 85% or more when having 22 carbon atoms, and preferably 90% or more when having 20 or more carbon atoms. This is because if the purity of a saturated higher alcohol with 22 carbon atoms is less than 80%, the pearlescent luster will be poor, and if the purity of a saturated higher alcohol with 20 or more carbon atoms is 90%.
This is because even if it is less than that, sufficient pearlescent luster cannot be obtained.

The saturated higher alcohol as used in the present invention brings about extremely favorable results in improving the thermal and alkaline hydrolytic stability of the composition.

Next, the surfactant of the present invention is a salt ionic surfactant, an amphoteric surfactant, or a nonionic surfactant, each singly or as a mixture of two or more thereof. Here, as anionic surfactants, alkylbenzene sulfonates such as sodium alkylbenzenesulfonate, alkylnaphthalene sulfonates such as sodium alkylnaphthalenesulfonate, sodium lauryl sulfate or triethanolamine lauryl sulfate, etc. Sulfated monoglycerides such as alkyl sulfates of number 12 to 18, alkylbenzene polyoxyethylene sulfonates in which the alkyl group has in particular 8 to 12 carbon atoms, laurin monoglyceride sodium sulfate or laurin monoglyceride ammonium sulfate or sulfated coco monoglyceride ammonium salt. , polyoxyethylene alkyl ether sulfates such as sodium polyoxyethylene lauryl ether sulfate or polyoxyethylene lauryl ether sulfate triethanolamine, alkyl ether sulfates such as sodium lauryl ether sulfate or triethanolamine lauryl ether sulfate, sodium lauroyl sarcosine or Sarcosine salts such as lauroyl sarcosine triethanolamine or sodium cocoyl sarcosine, N-acyl-L-glutamic acids such as monosodium N-coconut acyl-glutamate or monotriethanolamine of N-coconut acyl-glutamate; Examples include sulfosuccinates such as dioctyl esters of sulfosuccinic acid salts, and the like. Further, as the amphoteric surfactant, N-alkyl-β-iminodipropionate is used.

Basic quaternary ammonium compounds derived from N-alkyl-β-aminopropionates and 2-alkyl substituted imidacillins, such as hydroxyethylcarboxymethylalkylimidazolinium hydroxide, especially lauric acid, myristic acid or stearic acid Examples include derivatives such as. Furthermore, examples of nonionic surfactants include a condensate of ethylene oxide and a hydrophobic base obtained by condensing propylene oxide with propylene glycol, alkylphenyl polyoxyethylene ether, fatty acid polyhydric alcohol polyoxyethylene, etc. can be exemplified. These surfactants are not limited to those specifically exemplified. For use in this invention, the most preferred surfactant from the viewpoint of pearlescent formation is an anionic surfactant such as sodium polyoxyethylene alkyl ether sulfate, especially sodium polyoxyethylene lauryl ether sulfate (2E, O,). It is a surfactant.

The amounts of the above-mentioned saturated higher alcohols and surfactants are not necessarily limited, but usually 1 to 30% by market weight of saturated higher alcohols and 1 to 30% by weight of surfactants (active content of 1%) are used.
00%) is preferably 5 to 50% by weight. This is because if the amount of the saturated higher alcohol is less than 1% by weight, pearlescent formation is insufficient, if the amount is more than 30% by weight, it is difficult to prepare a pearlescent composition, and if the amount of the surfactant is less than 5% by weight. If the amount is too small, pearlescent formation is insufficient, and if the amount exceeds 50 fE, it is difficult to prepare a pearlescent composition. In addition, various additives such as colorants, flavoring agents, preservatives and sterilizers, antioxidants, and ultraviolet absorbers may be added to the extent that they do not adversely affect the pearlescent luster.

When blending the pearlescent composition of the present invention obtained in this way into a household or industrial cleaning agent, the blending ratio is not particularly limited, but as a general guideline, it is 1 to 501i It is desirable that the concentration be approximately 1%. This is because if the amount is less than 1% by weight, imparting pearlescent properties is insufficient, and if the amount is more than 50% by weight, the detergency deteriorates, which is not preferable.

[Effect]

In the composition of the present invention, the saturated higher alcohol having 22 carbon atoms exhibits a pearlescent luster with acid resistance, alkali resistance, and lipolytic properties when used in combination with a surfactant.

〔Example〕

Examples 1 to 7: Saturated higher alcohol having 18 carbon atoms 0.4
%, 0.6% for 20, 91.7% for 22, 24
An alcohol (Calcol 220-85, manufactured by Kako Soup Co., Ltd.) containing 1.3% of chloride was selected, and the following 7 types of surfactants A to G were selected, and these were mixed with water in the proportions shown in the table. did.

A: Sodium polyoxyethylene lauryl ether sulfate (2E, O,) (70%), B: Sodium polyoxyethylene lauryl ether sulfate (3E, O,) (27
%).

C Sodium nilauryl sulfate [94%], D Triethanolamine nilauryl sulfate [40%].

E: lauroyl sulfcin triethanolamine [30
%], F nilauryldimethylamine betaine acetate [26%], GIN-coco fatty acid acyl-glutamic acid monotriethanolamine [30%], the resulting mixture was reduced to 80%.
The solution was heated to a temperature of 0.degree. C. to form a homogeneous liquid, and then cooled with stirring to precipitate pearlescent flaky crystals, thereby preparing a pearlescent composition of the present invention. The pearlescent composition thus prepared was mixed with 8% sodium polyoxyethylene lauryl ether sulfate (2E, 0.28% solution) 50
1111%, coconut oil fatty acid jetanolamide 3% modified
To adjust the viscosity, an appropriate amount of sodium chloride (0.5 to 1.0% by saliva volume) and purified water in an amount such that the total amount was 100% by saliva volume were added to prepare a shampoo for pearlescent evaluation.

The viscosity (25° C.) of this shampoo was adjusted to 1500±100 cp by adjusting the amount of sodium chloride. The pearlescent luster of the obtained shampoo was evaluated by visual judgment according to the following criteria. That is, very good (5), somewhat good (4), fair (3), and somewhat poor (2).
, a three-level evaluation of extremely poor (1).

Regarding high-temperature stability, a shampoo containing the above-mentioned pearlescent composition is left at 45°C for one month, and those with no change in pearlescent luster are marked O, indicating a slight change. A three-level evaluation method was used, in which Δ marks are given for those that have disappeared, and X marks are given to those that have disappeared, and the evaluation results of the above-mentioned pearlescent property and this high temperature stability, as well as the overall evaluation of both, are also listed in the table.

It is clear from the table that the shampoo containing the pearlescent composition of the present invention has good pearlescent properties and high temperature stability.

Example 8: 25% of surfactant A used in Example 1 and Example 7
10% by weight of the same surfactant G used in Example 1~
7, and heated to 80°C, and 54% by weight of water and 1% by weight of sodium chloride, which were separately heated to 80°C. was added to uniformly dissolve the mixture, and the mixture was cooled to 45° C. with stirring to precipitate flaky crystals.

The pearlescent composition obtained by straining in this way is Example 1
As a result of the evaluation based on the evaluation method performed in 7 to 7, the pearlescent property was good, and even after being kept at 45°C for one month, no change in the pearlescent property was observed. Thermal stability was also excellent. Also, Example 1~
Similarly to Example 7, 8% by weight of the above pearlescent composition was added to the shampoo base and mixed. The pearlescent properties and thermal stability were evaluated and both were excellent.

〔effect〕

The pearlescent composition of the present invention has excellent pearlescent luster and thermal stability, and is also excellent in hydrolytic stability under heat and alkali, so it can be used as hair shampoo, body shampoo, etc. When added to cosmetic detergents, household detergents for hand washing or dishwashing, industrial detergents such as car shampoo, etc., it can give a beautiful pearlescent luster, and even after being exposed to high temperatures for long periods of time, it will remain the same. Not only does it show no abnormality in gloss and can be used even in a wider pH range of 1, but the saturated higher alcohol in the composition of this invention also gives it a good feeling of use, making it better than conventional commercially available products. Many excellent effects that are not seen before will appear. Therefore, it can be said that the significance of this invention is extremely large.

Claims (1)

[Claims] 1. A pearlescent composition comprising a saturated higher alcohol having 22 carbon atoms and a surfactant. 2. The pearl according to claim 1, wherein the saturated higher alcohol having 22 carbon atoms has a purity of 80% or more, preferably 85% or more, and the saturated higher alcohol having 20 carbon atoms or more has a purity of 90% or more. Glossy composition. 3. The pearlescent composition according to claim 1, wherein the surfactant is an anionic, amphoteric or nonionic surfactant, each singly or in a mixture of two or more.