JPH0711288A - Liquid detergent composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition having viscosity for easy use, shelf stability for a long period of time without impairing foaming properties and cleanability by using both an N-acylglutamate and a colloidal silicate. CONSTITUTION:A liquid detergent composition containing an N-acyl glutamate (e.g. N-lauroyl glutamate) is mixed with a colloidal silicate (e.g. magnesium aluminum silicate) to give the objective composition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid detergent capable of thickening without impairing foamability and detergency and having a stable viscosity even after long-term storage.
The present invention relates to a liquid detergent composition containing N-acylglutamate, and a liquid detergent composition containing colloidal silicate.

[0002]

2. Description of the Related Art A liquid detergent composition is usually blended with various thickeners to impart an appropriate viscosity in order to improve its handleability and usability. On the other hand, N-acyl glutamate is widely used in various detergents such as solid detergents, cream-like detergents, liquid detergents and cosmetics because of its low irritation, high safety, foaming and good feel after use. .

However, the liquid detergent composition containing N-acylglutamate is difficult to handle due to the fact that it is difficult to obtain the effect of the thickener and has a low viscosity. As a method for solving such a problem, Japanese Patent Laid-Open No. 64-75
No. 410 only proposes a method of blending a nonionic polyalkylene glycol having a specific structure, and a new thickening method has been demanded.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a liquid detergent composition containing an N-acylglutamate which solves the above problems and has improved foaming properties and detergency while having improved storage stability. It is to be.

[0005]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventors have found that the N-acylglutamate aqueous solution is stable even when stored for a long period of time by incorporating a colloidal silicate. It was found that a liquid detergent having a high viscosity can be obtained, and the present invention has been completed.

The present invention will be described in detail below. Examples of the N-acyl glutamate used in the present invention include linear chains having 8 to 22 carbon atoms such as N-lauroyl glutamic acid, N-myristoyl glutamic acid, N-palmitoyl glutamic acid, N-stearoyl glutamic acid and N-cocoyl glutamic acid. Alternatively, it has a branched or saturated acyl group. Examples of the salt include alkali metal salts such as sodium and potassium, alkanolamine salts such as monoethanolamine, diethanolamine and triethanolamine, and basic amino acid salts such as lysine and arginine. These may be used alone or in combination of two or more as needed. The amount of N-acylglutamate compounded is usually 2 to 30% by weight, preferably 5 to 25% by weight.

The colloidal silicate used in the present invention is a synthetic or natural water-soluble polymer which swells with water to form a colloid.
For example, "aegum" which is aluminum magnesium silicate (Vanderbilt trade name), "laponite" which is a helicite (Nippon Silica trade name), "bentonite" which is montmorillonite (Kanto bentonite trade name), etc. are commercially available. .

The amount of the colloidal silicate compounded in the detergent composition of the present invention is usually 0.05 to 10.0% by weight, preferably 0.5 to 5.0% by weight. If it is less than 0.05%, a sufficient thickening effect cannot be obtained. There is no particular problem if the content is 10.0% or more, but the thickening effect does not change even if the content is further increased.

The cleaning composition of the present invention may contain known components within a range that does not affect the effects of the present invention. That is, anion, nonion, which is usually used in liquid detergents,
Surfactants such as amphoteric surfactants and higher alcohols, protein derivatives, oily components such as polyethylene glycol fatty acid esters, moisturizers such as ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin and sorbitol, cationic, anions -Soluble and nonionic water-soluble polymer substances, sodium citrate, electrolytes such as salt, crude drugs, vitamins, ultraviolet absorbers, bactericides, preservatives, antioxidants, pH adjusters, sequestering agents, fragrances, etc. Can be used as appropriate.

[0010]

INDUSTRIAL APPLICABILITY The liquid detergent composition of the present invention uses a colloidal silicate in combination with an N-acylglutamate salt to obtain a liquid detergent having a viscosity which is easy to use without impairing foaming property and detergency. Is obtained. Moreover, the stable viscosity can be maintained even after long-term storage.

[0011]

EXAMPLES Next, the present invention will be described more specifically by way of examples, but the present invention is not limited to the following examples. In addition, each compounding amount in this Example was represented by weight%.

The evaluation method used in this example is shown below.

Viscosity Test Method The viscosity of a sample at 25 ° C. was measured with a B-type viscometer and shown in centipoise (cps). Evaluation of thickening effect ○: Good viscosity 200 cps or more ×; Poor viscosity less than 200 cps

Storage stability After storing the sample at 50 ° C. for one month, it was returned to 25 ° C. and the viscosity was measured. Evaluation of storage stability A viscosity decrease was determined from the viscosity immediately after preparation of the sample and the viscosity after a long-term storage test.

[0015]

[Equation 1] ◯: Good viscosity reduction rate of less than 20% ×: Poor viscosity reduction rate of 20% or more

Evaluation of foamability (foaming force) The foaming force is measured by the loss miles test method (JIS K 33).
62). Measurement temperature is 40 ℃, sample concentration is 0.2
At 5%, the foam height (ml) after 5 minutes was taken as the foaming power. ◯: 240 ml or more Δ: 200 to 240 ml ×; 200 ml or less

Examples 1 to 3 and Comparative Examples 1 to 4 Various liquid detergents shown in Table 1 were prepared and their performances were evaluated.
The blending amount of each composition in the table is% by weight.

As is clear from the results shown in Table 1, Comparative Example 1
In the case of 2, the thickening effect is insufficient. In the case of Comparative Example 3,
Although a thickening effect is recognized, the viscosity is greatly reduced by long-term storage, and the quality cannot be stably maintained for a long time.
Furthermore, Comparative Examples 3 and 4 impair the foamability. Examples 1 to 3 were very excellent not only in the thickening effect, but also in the viscosity not decreased even when stored for a long period of time, and the foamability was not impaired.

[0019]

[Table 1]

Example 4 Kitchen Detergent Composition Potassium N-lauroylglutamate 15.0 Laurylamine oxide 3.0 Coconut oil fatty acid dietanolamide 5.0 POE (5) Sodium lauryl ether sulfate 8.0 "Vee gum" 0 .5 Urea 1.0 Preservative 0.3 Perfume 0.1 Dye Appropriate amount Purified water Remainder

Example 5 Hair shampoo composition N-Cocoyl glutamic acid triethanolamine 18.0 1,3-butylene glycol 5.0 Cationized cellulose 0.5 Poly (dimethyl diallylammonium chloride / acrylic amide) "Murcoat 550" 1.0 "Vegum" 3.5 Preservative 0.3 Perfume 0.2 Purified water Balance

Example 6 Body shampoo-composition N-Cocoyl glutamic acid triethanolamine 15.0 1,3-butylene glycol 5.0 hydroxypropyl cellulose 0.5 "Vee gum" 4.0 dl-pyrrolidone carvone Sodium acid 2.0 Preservative 0.2 Perfume 0.2 Purified water Balance

The composition shown above had an excellent foaming power and at the same time had a long-term stable viscosity.

Claims (1)

[Claims] 1. A liquid detergent composition containing an N-acylglutamate, wherein a colloidal silicate is blended.