JPS61141797A - Granular skin washing agent - 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] The present invention relates to a granular skin cleansing agent.
This is a granular skin cleansing agent that contains long-chain acylamino acid salts and an acrylic polymer compound as a binder as essential ingredients. The purpose of this product is to be highly safe and to significantly improve its usage properties by granulating it, especially its solubility in water, lack of roughness when dissolved, and softness of the granules. The aim is to provide fees. Note that the binder in the present invention refers to a substance that binds powders together and maintains a granular shape. [Prior Art] Conventionally, many products exist on the market as granular skin cleansers. However, starch, dextrin, carboxymethylcellulose, hydroxyethylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, etc. are used as binders for making granules, but these are not fully satisfactory in terms of usage characteristics, granule stability, and uniformity. There was no. [Problems to be Solved by the Invention] The present inventors have developed a granular skin cleansing agent that essentially contains an N-long chain acylamino acid fil and an acrylic polymer compound as a binder, which causes less skin irritation and By selecting a binder that maintains the properties of use, such as good foaming power, improved solubility in water, prevention of roughness during dissolution, and making it into granules without sacrificing its weakly acidic properties. , improve solubility during use by softening the granules, that is, making them porous and obtaining granules with strong binding strength;
In order to improve the transportation stability of the granules, as a result of extensive research, we have finally obtained the granular skin cleanser of the present invention. [Means for Solving the Problems] In order to solve the above-mentioned problems, the present inventors used an N-long chain acylamino salt as the main ingredient of the cleaning agent and added an acrylic polymer compound as a binder. We have succeeded in significantly improving the above-mentioned problems, and based on this knowledge, we have achieved something unprecedented. He invented and perfected a new granular skin cleanser. The uninvented configuration will be described below. The N-long chain acylamino acid constituting the monoalkali salt of N-long chain acylamino acid used in the present invention is represented by the following general formula. HOOC-(CH2)n -CH-C0OHC0-NH (RCO indicates a fatty acid residue having 12 to 26 carbon atoms, n
is 1 or 2. ) Particularly preferably N-stearoylglutamic acid, N-myristoylglutamic acid, N-
- Lauroyl glutamic acid, N-stearoyl aspartic acid, N-myristoylaspartic acid, etc. can be used regardless of whether they are D-integrated, L-integrated, or DL-integrated, and can be used alone or in combination. Also good. On the other hand, the bases constituting the monoalkali salt of the N-long chain acylamino acid are 1, for example, triethanolamine, sodium hydroxide, potassium hydroxide, arginine, lysine,
Examples include histidine, ornithine, and oxylysine. Moreover, among these, the basic amino acids can be used regardless of whether they are D, L, or DL, and may be used alone or in combination. The amount of monoalkali salt of N-long chain acylamino acid used is:
It can be used in a range of 1.0 to BO weight %, preferably in a range of 3.0 to 50 weight %. The other essential component, the acrylic polymer compound, is (a) acrylic acid, methacrylic acid, acrylic acid alkyl ester, methacrylic acid alkyl ester, N-acrylic acid amide, N-methacrylic acid amide. Examples of commercially available polymer compounds obtained by copolymerizing at least one to three types include Placize (manufactured by Gooh Kagaku Co., Ltd.), Rohagit (manufactured by Rohm Co., Ltd.), and the like. Some of these polymer compounds are neutralized before use, but in that case, there are no particular restrictions on the neutralizing agent, and alkali metal salts such as sodium and potassium salts,
ammonium salt. Or jetanolamine, triethanolamine,
Organic bases such as aminomethylpropanediol can be used. In addition, as another acrylic polymer compound, at least one of (b) acrylic acid alkylaminoethyl ester, methacrylic acid alkylamino ester, acrylic acid alkyl ester, methacrylic acid alkyl ester, acrylic acid, and methacrylic acid. A polymer compound obtained by copolymerizing ~3 types and making it amphoteric with halogenated acetic acid, for example, a commercially available product is Yukaformer AM-75 (manufactured by Mitsubishi Yuka ■). The compounds may be used alone or in combination. Among these acrylic polymer compounds, particularly preferred is the acrylic polymer compound (a) having 4 carbon atoms.
Acrylic acid or methacrylic ester of ~18 aliphatic alcohol, copolymer of acrylic acid, methacrylic acid and acrylic butyester or methacrylic ester having 1 to 3 carbon atoms. The acrylic polymer compound (b) is, for example, the following (I), (II) group (I) dimethylaminoethyl (meth)acrylate, diethylaminoethyl (meth)acrylate (II) (meth)acrylate Examples include those obtained by copolymerizing monomers selected from stearyl (meth)acrylate, lauryl (meth)acrylate, butyl (meth)ethyl acrylate, and further treating the monomer with halogenated acetic acid to make it amphoteric. In addition, the average molecular weight of the acrylic polymer compound is 10.0
00 to 100.000 can be used, and within this range, a product that is satisfactory as a granular skin cleansing agent in terms of safety, granule moldability, usage characteristics, etc. can be obtained. Furthermore, if the blending amount is in the range of 0.1 to 15% by weight, the granules will not become too hard or crumble during transportation, and a skin cleansing material that is pleasant to the touch can be obtained. The present invention is a granular skin cleansing agent characterized by essentially containing the above-mentioned ingredients, and further includes surfactants, powders, water-soluble polymers, pigments, fragrances, and superfats commonly used in cosmetics. Agents etc. can be added as appropriate. In addition, the granular skin cleanser of the present invention can be used not only as a facial cleanser, but also as a facial cleanser.
It can also be used as a body cleaning material and a hand cleaning material. The method for producing the granular skin cleanser of the present invention includes mixing, granulation,
It is carried out in processes such as drying, and in particular in the granulation process, it can also be manufactured using a wet granulator, but if a fluidized granulation dryer is used, the process is simplified and more uniform granules can be obtained. Therefore, it is very convenient. The granular skin cleanser of the present invention is produced, for example, by the method shown below. The monoalkali salt of Φ N-long chain acylamino acid and its low content ingredients are uniformly mixed. ■ ■ in a fluidized granulation dryer, after dissolving the acrylic polymer compound in water and/or ethanol solvent,
Granulate and dry. ■ Fill containers. The granular skin cleansing/surgical product of the present invention obtained by the above method is as follows:
Due to the binder, although the granules appear to be hard, they are highly soluble in water, have very little roughness, and are uniform during use. Furthermore, the binder of the acrylic polymer compound did not interfere with the weak acidity of the cleaning material of the present invention, and good results were obtained without impairing foaming properties and foam quality. [Example 1] Next, the present invention will be further explained by giving examples. These do not limit the present invention in any way. Example [11 (Formulation) (% by weight) (1)
Monosodium N-lauroyl-L-glutamate 30.0 (of) Sodium lauryl sulfate 5.0 (3) Hydroxypropyl starch 47.8 (4) Ethanol
10.0 (5) Fragrance
0.1 (0 Yukaho-F -AM-75 (*1) 7.0 (*l) Alkyl methacrylate (01-C1g) / Monochloroacetic acid #A of dimethylaminoethyl methacrylate copolymer (Mitsubishi Oil (Manufacturing method) A Mix (1) to (3) uniformly. B Add (5) and (6) to (4) and dissolve. Spray B on CA and dry while granulating. Product. Example [21 (Formulation) (% by weight) (1)
N-coconut oil fatty acid-L-glutamate monosodium 20.0 (2) Sodium lauroylmethyltaurate 15.0 (3)
My ka
1.0 (4 hydroxypropyl starch 10.0 (5) corn starch
10.0 ((f) Magnesium aluminum silicate 27.9 (2) Polyvinylpyrrolidone 3.0 (8) Plastic size L -1
280 (Book 2) 3.0 (9) Incense
Fee 0.
1 (10) Ethanol 1
0.0 (*2) Acrylic ester/methacrylic ester copolymer (manufactured by Gooh Kagaku Co., Ltd.) (Manufacturing method) A (1) ~ (mix evenly. B (7) ~ ((support)) Dissolve in 60). Spray B onto CA and dry while granulating. Example

[3] (Formulation) (Weight%) (1)
Monopotassium N-stearoyl-L-aspartate 5.0(2)N
-Myristoyl-L-glutamate monosodium 8.0(3)
Tarri
28.0(4) Titanium oxide 2.0(5) Crystalline cellulose 38.8C phrase Incense
Fee 0.1(
2) Polyvinylpyrrolidone 4.0 (8
) Yuka Homer AM-754,0 (9) Ethanol 10.0 (Production method) A Mix (1) to (5) uniformly. B (6) to (8) are dissolved in (9). Spray B onto CA and dry while granulating to obtain a product. [Effect of the invention] In order to confirm the excellence of the granular skin cleansing surgery of the present invention,
Examples [11 to [31. and Comparative Example [1] shown below.
1 to [21] were evaluated by physical measurements and sensory tests. Comparative example [11 (Formulation) (wt%) (1
) Monosodium N-lauroyl-glutamate 30.0(2)
Sodium lauryl sulfate 5.0(3)
Hydroxypropyl starch 54.9 (4 scents)
Fee 0
．． 1 (5) Ethanol 10.
0 (Production method) A Mix (1), (ri) and a part of (3). B Dissolve (4) and the rest of (3) in @. Spray B on CA and dry while granulating. Comparative example [21 (Formulation) (wt%) (1)
N-stearoyl-L-7 monopotassium subpartate 5.0(ri) N-myristoyl-L
- Monosodium glutamate 8.0 (3)
Tarri
28.0 (titanium tetroxide 2.0 (phrase) crystalline cellulose 42.8 ((e) fragrance
Fee 0.1 (
7) Polyvinylpyrrolidone 4.0 (
8) Ethanol 10.0
(yiI method) A. Mix (1) to (5) uniformly. Dissolve B(6) and (2) in (8). CB is sprayed onto A, granulated and dried to produce a product. (Specific surface a) The sample for measurement has a size of 100 mesh (0,141] m11 or more and 42 mesh (0,3
50II11) or less, average particle size 60 mesh (0,25
Measurements were made using objects with a diameter of 0 m■). The specific surface area was measured using monosoap and the results are shown in Table 1. All measured values are the average of the measured values of 6 samples. Table 1 As is clear from Table 1, compared to the comparative example, the product of the present invention has
Although the granule size is the same, the specific surface area shows a large value,
This is because the product of the present invention has a porous structure! This is due to the large number of voids inside the U grain. Therefore,
When used, the product of the present invention exhibits excellent water affinity and solubility. (Usage characteristics) The use characteristics of the product of the present invention were sensory evaluated by a panel consisting of 12 people specializing in sensory evaluation. The results are shown in Table 2. The evaluation showed the average value of the evaluation scores of each panel. (Evaluation points) +3: Very good + 2: Good +1 = Somewhat good 0: Can't say either -1: Somewhat bad -2: Bad -3: Very bad (blank below) Table 2 Results of Table 2 As is clearer, the granular skin cleansing agent of the present invention was extremely superior in usage properties such as ease of dissolution in water and lack of roughness upon dissolution, compared to the comparative example. Applicant: Kobayashi Corner Co., Ltd. Proceedings Amendment (Voluntary) January 16, 1985 1. Indication of the case 1988 Patent Application No. 247694 2. Name of the invention: Granular Skin Cleansing Surgery 3. Amendment. Patent applicant address: 3-6-2-4, Nippon Tachibana, Chuo-ku, Tokyo Date of amendment order: 5 Subject of amendment: 6 - Correct contents (1) Page 14 of Specification 1 Delete "part of" in line 11. (2) Delete “and (remainder of 3)” on page 14, line 12 of specification 1. (3) “Spray B on A,” on page 15, line 1 O of specification 1.
Granulate and dry to make a product. " is corrected to "A is sprayed with B, and the product is obtained by drying while granulating."

Claims (4)

[Claims] (1) N-long chain acylamino acid (general formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ In the formula, RCO indicates a fatty acid residue having 12 to 26 carbon atoms. n is 1 or 2.) A granular skin cleanser characterized by essentially containing a monoalkaline salt and an acrylic polymer compound as a binder. (2) A patent claim in which the alkaline substance constituting the monoalkali salt of the N-long chain acylamino acid is an inorganic base such as sodium hydroxide or potassium hydroxide and/or an organic base such as L-arginine or triethanolamine. Range number (
The granular skin cleansing agent described in section 1). (3) The granular skin cleanser according to claim (1), which has a pH in the weakly acidic to neutral range. (4) The acrylic polymer compound is at least one of (a) acrylic acid, methacrylic acid, acrylic acid alkyl ester, methacrylic acid alkyl ester, N-acrylic acid amide, and N-methacrylic acid amide. A polymer compound obtained by copolymerizing three types, and/or (b) acrylic acid alkylaminoethyl ester, methacrylic acid alkylaminoethyl ester, acrylic acid alkyl ester, methacrylic acid alkyl ester, acrylic acid, methacrylate The granular skin cleanser according to claim (1), which is a polymer compound obtained by ampholytizing at least one to three copolymers of acrylic acid with halogenated acetic acid.