Powder granules

Abstract

To search for substitutable powder of silicone powder as a new base agent, and provide powder granules with less stimulation on skin in which a liquid component of a cleaning agent and the specific gravity of powder granules can be easily adjusted.SOLUTION: Powder granules contain (A) amino acid derivative and / or a powder component being wax having a melting point of 100°C or higher, and (C) ethyl cellulose.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a powder granulation product, particularly a powder granulation product having lauroyl lysine or a wax base as a main component. [Background technology]

[0002] By blending powdered granules into various detergents, various functions and effects can be imparted to the products, such as giving them a distinctive appearance or scrubbing effect, or blending various foam quality improvers and chemicals that are difficult to blend directly into detergent formulations as granules. However, when such powdered granules are blended into a detergent formulation, the specific gravities of the detergent and the powdered granules generally differ, so the granules tend to float or sink in the liquid detergent during preparation, making it difficult to maintain a stable blend over time.

[0003] For this reason, powder granules composed primarily of polyethylene powder, binders, liquid additives, etc. have been used because the specific gravity of the liquid components of the detergent and the powder granules can be easily adjusted (Patent Document 1).

[0004] However, when fine plastic particles such as polyethylene powder are flushed down the drain, they cannot be completely collected at sewage treatment plants and there is a risk that they will end up in rivers and lakes.The surfaces of these particles are easily soluble in harmful substances, and there is a risk that they will accumulate in the bodies of fish that eat them. As a result, there are growing concerns, particularly in the United States, that tiny plastic particles are flowing into rivers and lakes and polluting the environment.

[0005] It was also known to use powder made from crushed plant seeds as an alternative, but this had the problem of being hard and not round, causing severe irritation to the skin and mucous membranes. It was also known that volcanic ash, cellulose, and calcium carbonate could also be used, but because they have a high specific gravity, it is very difficult to adjust the specific gravity, and there was a problem that the granulated material would settle over time. Furthermore, when using a cleaning agent containing insoluble components derived from volcanic ash, if such insoluble components get into the eyes, there is a problem that they can be too irritating to the eyes.

[0006] It is also known to use silicone powder (Patent Document 2), but there are concerns that its use may be restricted from the viewpoint of environmental issues, such as the fact that silicone is generally not biodegradable and remains in the environment. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-207196 [Patent Document 2] Patent No. 6074492 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention was made in view of the above-mentioned prior art, and the problem to be solved was to solve the above-mentioned problems while searching for a new powder that can replace silicone powder as a base, and to provide a powder granulation product that is less irritating to the skin and that can be easily prepared so that its specific gravity is equivalent to that of the liquid component of a cleanser, or to that of liquid, emulsion, gel, or cream preparations, or to that of soap liquid before cooling and solidifying when produced by a framing method. Furthermore, while the powder granulation product has strength when granulated and during storage, when it is incorporated into liquid, emulsion, gel, or cream preparations or the above-mentioned framed soap, its strength decreases and it disintegrates easily during use, and it is possible to satisfy both granulation and handling properties and disintegration properties when incorporated into a preparation. [Means for solving the problem]

[0009] As a result of intensive research conducted by the present inventors to solve the above-mentioned problems, they selected lauroyl lysine, which is a dehydration condensation product of lauric acid, a higher fatty acid, and lysine, an amino acid, as a new base, or a wax base having a melting point of 100°C or higher, and discovered that a new powder granulation product can be obtained by using ethyl cellulose as a binder, thereby completing the present invention.

[0010] That is, the powder granulated product according to the present invention is (A) a powder component which is an amino acid derivative and / or a wax having a melting point of 100°C or higher; (C) ethyl cellulose; The powder granules are characterized by comprising: The powder component (A) is an amino acid derivative, It is preferable that the composition further contains cellulose. The powder component (A) is a wax having a melting point of 100°C or higher, It is preferable that the composition further contains (B) talc. The amino acid derivative serving as the powder component (A) is preferably a component obtained by dehydration condensation of a higher fatty acid and an amino acid. Furthermore, it is preferable that the amino acid derivative that is the powder component (A) is lauroyl lysine or caproyl lysine. The particle size of the wax having a melting point of 100° C. or higher, which is the powder component (A), is preferably 1 to 30 μm. It is also preferable that the particle size of the wax having a melting point of 100° C. or higher, which is the powder component (A), is a synthetic wax. It is also preferable that the powder component (A) contains 80 to 95% by mass of an amino acid derivative and (C) 1 to 10% by mass of ethyl cellulose. It is also preferable that the composition contains 75 to 90 mass % of (A) wax having a melting point of 100° C. or higher as the powder component, 5 to 20 mass % of (B) talc, and 1 to 10 mass % of (C) ethyl cellulose. It is also preferable that the composition contains 85 to 95 mass % of the amino acid derivative as the powder component (A), 1 to 10 mass % of a wax having a melting point of 100° C. or higher, and 1 to 10 mass % of (C) ethyl cellulose. The present invention also provides a cleansing agent characterized by containing the powder granules. The present invention also provides a cosmetic preparation characterized by containing the powder granules. [Effects of the Invention]

[0011] According to the present invention, it is possible to obtain a powder granulation product that is gentle on the skin without using silicone powder, and whose specific gravity can be easily adjusted to liquid, emulsion, gel, or cream preparations, or to a framed soap liquid before cooling and solidifying. DETAILED DESCRIPTION OF THE INVENTION

[0012] (A) a powder component that is an amino acid derivative and / or a wax having a melting point of 100°C or higher The amino acid derivative that is the powder component (A) used in the present invention is preferably a component obtained by dehydration condensation of a higher fatty acid and an amino acid.

[0013] The amount of the amino acid derivative, which is the powder component (A) used in the present invention, is preferably 80% by mass or more in the powder granules. If the amount of the amino acid derivative in the powder granules is 60% by mass or less, granulation is possible, but the powder granules may be slightly sticky when lightly squeezed with the hand, and the powder granules may dissolve or aggregate in the soap, or float or settle slightly in the soap when blended with the powder granules, which is undesirable. Furthermore, when preparing a powder granule using an amino acid derivative and a wax having a melting point of 100°C or higher as the (A) powder component in combination, the amount of the amino acid derivative in the powder granule is preferably 85 to 95% by mass from the viewpoint of appearance when blended into soap. When combined with a wax having a melting point of 100°C or higher, if the amount of the amino acid derivative in the powder granule is less than 85% by mass, the powder granule may dissolve or aggregate in the soap, or may float or settle slightly when blended into soap. Furthermore, if the amount exceeds 95% by mass and the amount of the binder (C) ethyl cellulose is less than 1% by mass, the caking effect is weakened, and the stability of the granule may be impaired (it may become more prone to crumbling).

[0014] Amino acid derivatives include lauroyl lysine or caproyl lysine.

[0015] Furthermore, when a wax having a melting point of 100°C or higher is used as the powder component (A) used in the present invention, it is preferable to use it in combination with an amino acid derivative or (B) talc from the viewpoints of granulation properties, stability in the pot, and appearance when blended with soap.

[0016] Furthermore, when (A) a wax having a melting point of 100°C or higher is used in combination with (B) talc as the powder component, the amount of wax having a melting point of 100°C or higher in the powder granules is preferably 75 to 90% by mass from the viewpoints of granulation ability, stability in the pot, and appearance when blended into soap. When combined with (B) talc, if the amount of wax having a melting point of 100°C or higher in the powder granules is less than 75% by mass, the powder granules may dissolve or aggregate in the soap when blended into the soap, or may rise or sink significantly. If the amount exceeds 95% by mass and the amount of the binder (C) ethyl cellulose is less than 1% by mass, the caking effect is weakened, and the stability of the granules may be impaired (they may become more prone to crumbling). Furthermore, when preparing a powder granule using an amino acid derivative and a wax having a melting point of 100°C or higher as the (A) powder component in combination, the amount of wax having a melting point of 100°C or higher in the powder granule is preferably 1 to 10% by mass from the viewpoint of appearance when blended into soap. When combined with an amino acid derivative, if the amount exceeds 10% by mass, the powder granule may dissolve or aggregate in the soap, and may float or sink slightly when blended into soap.

[0017] (B) Talc The talc (B) used in the present invention is preferably used in combination with a wax having a melting point of 100°C or higher.

[0018] When using wax with a melting point of 100°C or higher and talc (B) as the powder component (A) in combination, the amount of talc (B) in the powder granules is preferably 5 to 20% by mass from the viewpoints of granulation properties, stability in the pot, and appearance when blended with soap. When used in combination with wax with a melting point of 100°C or higher, if the amount of talc (B) in the powder granules is less than 5% by mass, the specific gravity of the powder granules will be small, and the granules may float when blended with soap. If the amount exceeds 20% by mass, when the powder granules are blended with soap, the powder granules may dissolve or aggregate in the soap, and may rise or sink significantly.

[0019] (C) Ethyl cellulose As the binder used in the present invention, (C) ethyl cellulose is suitable because it is water-insoluble and has a good color and odor.

[0020] The blending amount of (C) ethyl cellulose used in the present invention is preferably 1 to 10% by mass in the powder granules in terms of caking properties and granulation properties.

[0021] The powder granules may contain colorants, synthetic chemicals, oils, etc., within the range that does not impair the effects of the present invention.

[0022] Generally, framed soap or liquid cleansing agents are often processed at 70°C to 90°C during preparation, and therefore the melting point of the granules is preferably 90°C or higher.

[0023] <Method for producing powder granules> In producing the powder granulated product according to the present invention containing the above components (A) to (C), first, the components (A) to (C) are transferred to a stirring device, and the solvent is added in three portions, stirring each time to obtain a mixture. Solvents that dissolve binders include ethanol, methanol, acetone, and hexane. Among these, ethanol is preferably used from the viewpoint of safety. The resulting mixture is extruded through a mesh (20M) to granulate. Thereafter, the granulated material is dried to volatilize the solvent. Thereafter, the mixture was extruded using a mesh (60M) to obtain a powder granulated product. Here, 20M refers to a sieve with an opening of 0.701 mm, and 60M refers to a sieve with an opening of 0.246 mm.

[0024] As the base for the cleanser or cosmetic to be blended with the powder granules, a commonly used one can be used as is. Specifically, cleansers include those containing aliphatic soaps or synthetic surfactants such as acyl glutamates and cetyl sulfates as the main component, while cosmetics include lotions, emulsions, creams, gels, and the like. The formulation may be cream, paste, gel, liquid, or powder. Specific examples of the product include cleansers such as cleansing foams, cleansing powders, cleansing creams, transparent soaps, hair shampoos, and body shampoos; massage products such as massage creams and massage gels; and hair care products such as hair treatments and hair packs. [Example]

[0025] The present invention will be further described below with reference to specific examples, but the present invention is not limited to these. The blending amounts of components are in mass % unless otherwise specified. The evaluation methods used in the present invention are as follows.

[0026] (1) Granulation properties The powder granules were evaluated for texture when held in the hand and for the success or failure of granulation, based on the following criteria: 〇: It has a moderate amount of moisture and maintains its shape for a while when squeezed lightly with your hand. It is not sticky and is granulated uniformly. △: Slightly sticky when lightly squeezed with hands, but granulation is possible ×: Granulation not possible

[0027] (2) Stability in the pot during manufacturing The powder granules were stirred in the soapy water for several minutes, and the presence or absence of dissolution and disintegration of the powder granules was expressed and evaluated based on the following criteria. 〇: The powder granules were added to a soap making vessel (70℃) and stirred for 15 minutes, after which the powder granules were not dissolved or disintegrated. △: The powder granules were added to a soap making vessel (70°C) and stirred for 15 minutes, after which some of the powder granules dissolved and disintegrated. ×: The powder granules were added to a soap making vessel (70°C), and after stirring for 15 minutes, the powder granules were completely dissolved and disintegrated.

[0028] (3) Appearance The powder granules were blended with a soap base to produce soap, which was then evaluated. ◯: The powder granules are uniformly dispersed throughout the soap, with no floating or settling. △: The powder granules dissolved or aggregated in the soap, and slightly floated or settled. ×: The powder granules dissolved or aggregated in the soap, and significantly floated or settled.

[0029] (4) Theoretical specific gravity The theoretical specific gravity was calculated using the following formula: When the powder granules consist of components A, B, C, ... N, The amount of each ingredient is A', B', C', N', If the specific gravity of each component is a, b, c, n, then (Theoretical specific gravity)=100 / {(A' / a)+(B' / b)+(C' / c)++(N' / n)} However, A'+B'+C'+...N'=100 a,b,c,...n>0

[0030] First, the present inventors searched for and investigated powders that could be substituted for silicone powder. The results are shown in Table 1.

[0031] [Table 1]

[0032] The results of the study in Table 1 reveal that lauroyl lysine (Test Example 1-3) and synthetic wax (Test Example 1-9), which have excellent granulation properties and stability in the pot, are suitable.

[0033] Next, the present inventors investigated the optimum amount of lauroyl lysine to be incorporated into the powder granules using cellulose as a base. The resulting powder granules were added to a soap manufacturing kettle containing a soap base by a known method, and the appearance of the soap when blended was evaluated. The results are shown in Table 2.

[0034] [Table 2]

[0035] The results in Table 2 show that when the lauroyl lysine content in the powder granulation product is 40% by mass or more (Test Examples 2-3 to 2-4), the granulation properties and appearance (sedimentation) when soap is blended tend to improve, and from the standpoints of granulation properties, stability in the kettle, and appearance when soap is blended, it is preferable for the lauroyl lysine content in the powder granulation product to be 80% by mass or more (Test Examples 2-5 to 2-7).

[0036] Next, the present inventors investigated the optimum amount of synthetic wax to be blended in the powder granules using cellulose as a base. The resulting powder granules were added to a soap manufacturing kettle containing a soap base by a known method, and the appearance of the soap when blended was evaluated. The results are shown in Table 3.

[0037] [Table 3]

[0038] The results in Table 3 show that when the synthetic wax content in the powder granules is 80 mass % or more (Test Examples 3-5 to 3-7), the granulation properties tend to improve, but the soap tends to become slightly cloudy when blended. Furthermore, by combining synthetic wax and talc, the granulation properties, stability in the kettle, and appearance when blended with soap were improved (Test Examples 3-7 to 3-10), and it was found that it is preferable for the powder granules to contain 75 to 90% by mass of synthetic wax and 5 to 20% by mass of talc (Test Examples 3-8 to 3-10).

[0039] Next, the present inventors investigated the effect of using lauroyl lysine in combination with a synthetic wax.

[0040] [Table 4]

[0041] From the results in Table 4, it was confirmed that when lauroyl lysine and synthetic wax were used in combination, if the synthetic wax content in the powder granules was 15% by mass or more (Test Examples 4-3 to 4-10), the appearance tended to become cloudy when blended with soap. When lauroyl lysine and synthetic wax are used in combination, it was found that, from the standpoints of granulation properties, stability within the pot, and appearance when blended with soap, it is preferable for the powder granules to contain 85 to 95% by mass of lauroyl lysine and 1 to 10% by mass of synthetic wax (Test Examples 2-7, 4-1, and 4-2).

[0042] The following shows examples of formulations in which the powder granules of the present invention are incorporated into soap compositions.

[0043] [Table 5]

Claims

1. (A) a powder component which is an amino acid derivative and / or a wax having a melting point of 100°C or higher; (C) ethyl cellulose; A powder granulated product comprising:

2. the powder component (A) is an amino acid derivative, Furthermore, cellulose The powder granule according to claim 1, comprising:

3. the powder component (A) is a wax having a melting point of 100°C or higher, Furthermore, (B) talc The powder granule according to claim 1, comprising:

4. 3. The powder granulated product according to claim 1, wherein the amino acid derivative as the powder component (A) is a component obtained by dehydration condensation of a higher fatty acid and an amino acid.

5. 3. The powder granulated product according to claim 1, wherein the amino acid derivative (A) is lauroyl lysine or caproyl lysine.

6. 4. The powder granulated product according to claim 1, wherein the particle size of the wax having a melting point of 100° C. or higher, which is the powder component (A), is 1 to 30 μm.

7. 4. The powder granulated product according to claim 1, wherein the particle size of the wax having a melting point of 100° C. or higher, which is the powder component (A), is a synthetic wax.

8. 3. The powder granule according to claim 1, comprising 80 to 95% by mass of the amino acid derivative as the powder component (A) and 1 to 10% by mass of ethyl cellulose as the powder component (C).

9. The powder granule according to claim 3, characterized in that it contains 75 to 90 mass% of (A) a wax having a melting point of 100°C or higher as a powder component, 5 to 20 mass% of (B) talc, and 1 to 10 mass% of (C) ethyl cellulose.

10. The powder granule according to claim 1, characterized in that it comprises 85 to 95 mass% of the amino acid derivative as the powder component (A), 1 to 10 mass% of a wax having a melting point of 100°C or higher, and 1 to 10 mass% of (C) ethyl cellulose.

11. A cleansing agent characterized by comprising the powder granulated product according to any one of claims 1 to 3, 9 and 10.

12. A cleansing agent comprising the powder granulated material according to claim 4.

13. A cleanser comprising the powder granulated material according to claim 5.

14. A cleansing agent comprising the powder granulated material according to claim 6.

15. A cleanser comprising the powder granulated material according to claim 7.

16. A cleansing agent comprising the powder granulated material according to claim 8.

17. A cosmetic preparation comprising the powder granulated product according to any one of claims 1 to 3, 9 and 10.

18. A cosmetic preparation comprising the powder granulated product according to claim 4.

19. A cosmetic preparation comprising the powder granulated product according to claim 5.

20. A cosmetic preparation comprising the powder granulated product according to claim 6.

21. A cosmetic preparation comprising the powder granulated product according to claim 7.

22. A cosmetic preparation comprising the powder granulated product according to claim 8.

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