JPH06108089A - Powdery detergent composition - Google Patents

Abstract

PURPOSE:To prevent the dusting (spattering) of sodium and potassium N- lauroylglutamates and improve the dispersibility and solubility thereof to thereby improve a detergent composition prepared from these salts in dispersibility and solubility and in the prevention of dusting. CONSTITUTION:Powders of sodium and potassium N-lauroylglutamates having a moisture content adjusted to about 3.5-10wt.% are used to give this composition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder detergent composition, and more particularly to a powder detergent composition containing a powdery sodium salt and / or potassium salt of N-lauroylglutarminic acid as a main component.

[0002]

2. Description of the Related Art N-long chain acylamino acids and salts thereof are
Amisoft as an amino acid-based anionic surfactant
Some products are sold under the trade name of (registered trademark),
The N-long chain acyl group in these compounds includes an acyl group derived from coconut oil fatty acid, lauric acid, myristic acid, stearic acid, a mixed fatty acid of hardened beef tallow and coconut oil, and the amino acid is L -Including glutamic acid,
And salts include alkali metal salts such as sodium and potassium, organic amine salts such as monoethanolamine salt,
And basic amino acid salts are already known to be included. In addition, "Amisoft", whose amino acid is an acidic amino acid, has the same weak acidity as the skin and has a high level of safety against the skin because it is extremely less irritating. It is already known that it is used as a detergent.

By the way, in such "Amisoft",
The powdery sodium salt and potassium salt of N-lauroylglutamic acid are produced, for example, by spray-drying the solution, and are often used as a raw material for powder detergents such as facial cleansing powder and bath salts. Has a large powdering level (Konadachi) when preparing a powder detergent, and also has a large powdering level when it is actually used and its dispersibility in water and solubility in water are not always good. The problem is that there is no such thing.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides powders of N-lauroylglutamic acid sodium salt and potassium salt having suppressed powdering property and improved dispersibility and solubility. It is an object of the present invention to provide a powder detergent containing such powder as a main component and having improved handling physical properties.

[0005]

Means for Solving the Problems As a result of intensive research to solve the above-mentioned problems, the present inventor has found that the powderiness, dispersibility and solubility of N-lauroylglutamic acid sodium salt and potassium salt can be found. Poorness is caused by excessive drying. Therefore, if the water content of the powder of sodium salt and potassium salt of N-lauroylglutamic acid is adjusted, the above-mentioned preparation of the powder cleaning agent containing such powder as a main component can be performed. It was also found that the problems at the time of use can be solved, and the present invention has been completed based on such knowledge.

That is, the present invention has a water content of about 3.5-
The present invention relates to a powder detergent composition containing about 10% by weight of a powdery sodium salt and / or potassium salt of N-lauroylglutamic acid.

The present invention will be sequentially described below.

[0008] The water content of the powder of a commercially available sodium salt of N-lauroyl-L-glutamic acid, which has an excessively small water content due to excessive drying, is highly powdery and has poor dispersibility and solubility, It is usually over 1% by weight,
There is no particular difficulty in adjusting this water content to about 3.5 to about 10% by weight (humidification process). For example, simply spreading the powder to be humidity-controlled and exposing it to high-humidity outside air achieves the purpose. However, for more efficient operation, forced humidity control using a humidifier or the like can be used. The higher the water content, the more dry the powder becomes and the less powder is formed. However, when the water content exceeds about 10% by weight, N-
The powder of the sodium salt of lauroyl glutamic acid does not lose the powdery property and is not preferable.

The powderiness (scatterability) of the powder of sodium salt and potassium salt of N-lauroylglutamic acid at the time of production of the powder detergent composition in which these are blended as raw materials can of course be visually observed. ,
A more accurate measurement can be made by a scattering test using a powder tester.

The powder standing property of this powder detergent composition in actual use can of course be visually observed.
For example, it can be performed by a sensory test by a trained panel.

When this powder detergent composition is actually used for washing the face, it is preliminarily dissolved in water (cold water or hot water). The dispersibility and solubility in water, which are problems at this time, are A small amount of water can be placed on the palm of the hand and the powder of the cleaning agent can be added to it for easy inspection.
A more accurate measurement can be performed by measuring the dissolution rate (dissolution time) in water. By the way, N-
Powders of sodium salt and potassium salt of lauroyl glutamic acid, which are excessively dried, form so-called lumps and have poor dispersibility in water even if added to water in order to dissolve it in water, and eventually dissolve. The sex is bad.

The composition of the powder detergent composition of the present invention is not particularly limited except that powdery N-lauroylglutamic acid sodium salt and / or potassium salt having a predetermined water content is used as an essential raw material. It goes without saying that facial cleansing powders commonly used for powder detergents, raw materials for detergents such as shampoo, and raw materials for bath agents such as nigri hot water can be appropriately used as desired.

The powder cleaning agent in the present invention includes a powder bath agent and the like in addition to a powder cleaning agent such as a face-washing powder, a powder hair shampoo, a powder toothpaste and a kitchen cleanser. The powder cleaning agent of the present invention has such a broad meaning.

[0014]

EXAMPLES The present invention will be further described below with reference to examples.

Example 1 (moisture content and physical properties to be handled) Four kinds of commercially available sodium and potassium N-lauroyl-L-glutamate samples were collected, and the water content of these samples was adjusted to adjust the water content and the powderiness ( Scatterability), dispersibility and solubility were examined. The results are shown in Table 1 (a)
~ (D).

[0016]

[Table 1]

[0017]

[Table 2]

In this test, the water content was measured by the Karl Fischer method, the powderiness (scatterability) was measured by a scatterability test by a powder tester, and the solubility in water was measured by the dissolution time in water (1.5 g / 100m
The dispersibility in water was measured by taking a powder (about 1 g) on the palm and adding a small amount of water.

The dissolution rate can be evaluated as good within a dissolution time of 300 seconds, the dispersibility can be evaluated as good at 70 or more, and the dispersibility is good if it does not become a palm or a lump (○), When a small amount of lumps are generated, it is acceptable (Δ), and when a large amount is generated, it is defective (×).

Example 2 (cleaning agent) With the compositions shown in Tables 2 to 5 below, the raw materials shown in each table were well kneaded with a powder mixer to prepare a face-washing powder, powder toothpaste, kitchen cleanser and bath agent. . In each table, the composition ratio is shown in parts by weight.

[0021]

[Table 3]

[0022]

[Table 4]

These products were excellent in handling physical properties during production (during adjustment) and during use.

[0024]

Industrial Applicability According to the present invention, the sodium salt and potassium salt of N-lauroylglutaminic acid, which are excellent in handling characteristics (powdering property (scatterability), dispersibility and solubility), can be easily provided, and by extension, Thus, it has become easy to provide a detergent composition having N-lauroylglutamate sodium and potassium salts as raw materials excellent in such characteristics.

Claims (1)

[Claims] 1. A powder detergent composition comprising a powdery sodium salt and / or potassium salt of N-lauroylglutamic acid having a water content of about 3.5 to about 10% by weight.