JPS60221498A - Detergent - 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 The present invention relates to powder or granular cleansers, particularly skin cleansers.

Conventionally, powdered detergents are made by crushing foaming detergents such as fatty acid soaps or synthetic surfactants together with inorganic powder to form bilge, granulating them into appropriate sizes as needed, and then using them as detergents. was.

However, since the main ingredients are only a foaming cleanser and bilgoo, the degreasing power is too strong, and the skin feels very tight after washing.

Furthermore, if the amount of foaming detergent is reduced in order to weaken the degreasing power, there is a drawback that the foaming power naturally decreases.

In view of these circumstances, the present inventors have conducted extensive research and found that by blending straight-chain saturated fatty acids, a powder or granular detergent that is moisturized after use, that is, has an excellent emollient effect and has improved foaming power, can be obtained. It is a straight chain saturated fatty acid, and examples thereof include lauric acid, myristic acid, palmitic acid, stearic acid, and behenic acid.

If the fatty acid number is 11 or less, the emollient effect will be reduced, and if the number is 23 or more, the emollient effect will be present, but it will not be effective in the foaming direction and will even slightly inhibit foaming, which is not preferable. .

In addition, fatty acids containing unsaturated bonds or branched chains, such as oleic acid, linoleic acid, and isostearic acid, are liquid and are therefore not suitable as ingredients in powder or granular detergent formulations.

(Left below) In addition to the above-mentioned straight-chain saturated fatty acids, the present invention also uses straight-chain saturated fatty acids with 12 to 22 carbon atoms having 1 to 3 hydroxyl groups in the molecule, such as 12-hydroxystearic acid, 9, l
O-dihydroxystearic acid and the like can also be used.

The above straight chain saturated fatty acids and straight chain saturated fatty acids having a hydroxyl group can be used by selecting any one type or two or more types from these, and the blending amount is 2 to 40% of the amount of cleaning fee.
If it is less than 2%, the effect of the combination will not be exhibited.
If it exceeds 40%, although an emollient effect can be obtained, foaming is inhibited, which is not preferable. It can be blended in any proportion between 2 and 40% depending on the desired emollient effect and foaming detergency. Preferably it is 5 to 20%.

As the detergent base in which the straight chain saturated fatty acid or the straight chain saturated fatty acid having a hydroxyl group is blended, a powdered detergent base that is commonly considered can be used.

Foaming cleaning agents include fatty acid soaps made from fatty acids such as stearic acid, valmitic acid, myristic acid, and lauric acid and alkalis such as sodium and potassium, as well as general-purpose soaps such as N-lauroyl-L-glutamate sodium higher alcohol sulfate ester salts. Use one or more foaming cleaning agents.

Inorganic powders such as talc, kaolin, and titanium oxide, which are conventionally blended in powder cleaning materials, can also be used in combination.

However, if the amount of inorganic powder is extremely large, the amount of foaming detergent and straight chain saturated fatty acid will inevitably decrease, making it difficult for the performance of the powder or granular detergent itself and the effects of the present invention to be exhibited, which is not preferable.

Furthermore, water-soluble inorganic salts such as sodium sulfate can also be blended as long as they are solid.

Moreover, drugs, pigments, fragrances, etc. can be added as necessary.

After mixing and pulverizing the above ingredients in proportions suitable for the purpose, if necessary, granulating to an appropriate size to obtain a powder or granular cleaning agent.

Next, the present invention will be explained in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

(Margin below) Example 1 Fatty acid sodium soap 50% i% (Beef tallow: coconut oil = -yo: 3o) Talc 3゜ Myristic acid.

Pigment: Appropriate amount of fragrance: Appropriate amount of soap, talc, myristic acid, and pigment were mixed and ground, sprayed with fragrance, and dried to obtain a powdered skin cleansing agent.

Example 2 N-lauroyl-glutamic acid 40w large thorium Sodium cetyl sulfate 1゜ Titanium oxide 44 Lauric acid 3 12-hydroxystearic acid 3 Fragrance (appropriate amount) A powdered skin cleanser was obtained according to Example 1.

Sodium fatty acid soap 60 weight maximum beef tallow: coconut oil = 70:30) N-myristoyl-N-methyl 2゜sodium taurine titanium oxide 16 behenic acid 2 hydroxyglopyl cellulose 2 fragrance appropriate amount of foaming detergent, inorganic powder and behenic acid After mixing and pulverizing, hydroxypropyl cellulose is granulated as a binder. Thereafter, particles with a particle size of 30 to 100 mesh were sieved to obtain a granular skin cleansing agent.

(The following is a blank space) In Example 1, compared to Comparative Example 1, the foaming power was improved even though the amount of foaming detergent was the same, and the emollient effect was also significantly improved. This is an effect due to the combination of straight chain saturated fatty acids.

Comparing Example 2 and Comparative Example 2, it was found that when the amount of straight chain saturated fatty acids was appropriate, both the foaming power and the emollient effect were good as shown in Example 2, but when the amount of fatty acids was excessive, In this case, as shown in Comparative Example 2, although there is an emollient effect, the foaming power is significantly reduced.

Example 3 has a slightly lower amount of linear saturated fatty acids than Examples 1 and 2, and although the emollient effect is slightly less, both the foaming power and the emollient effect are within sufficiently satisfactory levels.

By blending the straight chain saturated fatty acids as described above, it is possible to obtain a cleaning agent with improved foaming power and excellent emollient effect after use.

The foaming power test method and emollient effect evaluation method are as follows.

(Left below) [Foaming power test method] Dissolve the sample at a concentration of 2% in water adjusted to a calcium ion concentration of 70 ppm to obtain an aqueous sample solution. Sample aqueous solution 40
Pour 0 ml into the mixer and stir for exactly 1 minute at a speed of 4000 revolutions per minute with turbine-type blades. The volume (tnl) of the foam foamed by stirring was read immediately after 1 minute of rotation, and was taken as the foaming power value.

Note that the measurement temperature was 35°C.

[Evaluation method of emollient effect]

Ten professional beauty technicians used each sample in the same way as they would normally use a cleanser, gave a score for each answer below, and averaged the values to determine the emollient effect rating.

Moisturized after face wash 5 points Slightly moisturized 4 points Normal 3 points, 2 points Tubular 1 point Patent applicant Shiseido Co., Ltd. Spontaneous writing of procedural amendments) 1. Indication of the case 1980 Patent Application No. 77250 2 , Name of the invention 3, Person making the amendment 4, Detailed description of the invention in the specification subject to amendment 5, Contents of the amendment (1) "Obtained" in item 14 of page 8 of the specification. Insert the following sentence between this and the table on page 9.

"Comparative example 1 Fatty acid sodium soap 50% by weight (Beef tallow: coconut oil - 70':30) Talc 50 Pigment Appropriate amount Fragrance (appropriate amount) According to Example 1, a non-skin cleanser was obtained.

Comparative Example 2 N-lauroyl-glutamine 40% by weight acid 1-
Lithium N-myristoyl-N-methyl 10 Sodium lauric acid 25 Stearic acid 25 Perfume Appropriate amount According to Example 2, a granular skin cleanser was obtained. J or more

Claims (1)

[Claims] Straight chain saturated fatty acid having 12 to 22 carbon atoms and 1 to 3 hydroxyl groups
Powder or granular cleaning agent characterized by containing one or more types selected from the group consisting of linear saturated fatty acids having 12 to 22 carbon atoms.