SOLID HAIR DETERGENT COMPOSITION

Abstract

An object of the present invention is to provide a solid hair detergent composition that achieves both the handleability of the agent when used and the crack suppression property during storage. The solid hair detergent composition including (A) an alkali metal cocoyl isethionate salt, (B) cationized guar gum, and (C) water can improve both the handleability of the agent when used and the crack suppression property during storage.

Claims

1. A solid hair detergent composition comprising (A) an alkali metal cocoyl isethionate salt, (B) cationized guar gum, and (C) water.

2. The solid hair detergent composition according to claim 1, wherein a content of component (B) is 1 to 20 parts by weight per 100 parts by weight of component (A).

3. The solid hair detergent composition according to claim 1, wherein the content of component (B) is 0.05 to 1.5 parts by weight per 1 part by weight of component (C).

4. The solid hair detergent composition according to claim 1, the composition comprising 5 to 25 wt % of the component (C).

5. The solid hair detergent composition according to claim 1, further comprising (D) a cationized polymer other than cationized guar gum.

6. The solid hair detergent composition according to claim 5, wherein component (D) is a polymer containing a diallyl dimethyl quaternary ammonium halide as a constitutional unit.

7. The solid hair detergent composition according to claim 5, wherein a content of component (D) is 0.1 to 10 parts by weight per 100 parts by weight of component (A).

8. The solid hair detergent composition according to claim 1, further comprising (E) a polyhydric alcohol.

9. The solid hair detergent composition according to claim 8, wherein a content of component (E) is 0.5 to 10 parts by weight per 100 parts by weight of component (A).

10. The solid hair detergent composition according to claim 8, wherein the content of component (E) is 0.05 to 0.5 parts by weight per 1 part by weight of component (C).

11. The solid hair detergent composition according to claim 1, further comprising (F) a coconut oil fatty acid and/or (G) an alkali metal isethionate salt.

Description

EXAMPLES

[0064] Hereinafter, the present invention will be more specifically described with reference to Examples. The present invention is not limited to these Examples.

[0065] Solid hair detergent compositions (30.0 g/piece, 5.8 cm×4.2 cm×1.0 cm) shown in Table 1 were prepared. Specifically, the components shown in Table 1 were pulverized and mixed by a three roll mill, then kneaded by an extruder set at 50° C., and molded by a pressing machine using a mold. The molded product was removed from the mold and naturally cooled to room temperature to produce a solid hair detergent composition. The details of the ingredients used in each solid hair detergent composition are as follows. [0066] Sodium cocoyl isethionate: component in PUREACT I-78 (Innospec Active Chemicals LLC) [0067] Sodium lauroyl glutamate: Aminosurfact ALMS-P1 (Asahi Kasei Finechem Co., Ltd.) [0068] Sodium lauroyl aspartate: AminoFoamer FLMS-P1 (Asahi Kasei Finechem Co., Ltd.) [0069] Guar hydroxypropyltrimonium chloride: CATINAL CG-100LD (TOHO Chemical Industry Co., Ltd.) [0070] Polyquatemium-10: POIZ C-150L (Kao Corporation) [0071] Polyquatemium-22: Merquat 295 (Lubrizol Japan Limited), cation density 6.0 meq/g, weight average molecular weight 190,000 [0072] Coconut oil fatty acid: component in PUREACT I-78 [0073] Sodium Isethionate: component in PUREACT I-78

[0074] The obtained solid hair detergent compositions were evaluated as follows for the handleability when used, crack suppression property during storage, moldability, lathering, and smoothness in rinsing. The results are shown in Table 1.

Handleability of Agent When Used

[0075] Each solid hair detergent composition was thoroughly wetted with 100 g of water, and after cutting off water droplets, the solid hair detergent composition was rubbed back and forth for 5 times on a palm, and the amount of the agent transferred to the hand was evaluated on a scale of 1 to 10, in which 10 points were given to the amount of the agent in the case of the solid hair detergent composition of Example 4, and 1 point was given to the amount of the agent in the case of the solid hair detergent composition of Comparative Example 1. It is determined that the higher the score is, the more excellent the handleability of the agent when used is. When the score was 6 points or more, it was determined that the desired handleability was achieved.

Crack Suppression Property During Storage

[0076] Each solid hair detergent composition was immersed in water having a temperature of 5° C. for 2 hours, then taken out from the water, and allowed to stand in an environment having a temperature of 5° C. and a humidity of 30% RH for 1 day. Thereafter, the crack density (ratio of the area of cracks to the surface area of the solid hair detergent composition) in the solid hair detergent composition was evaluated on a scale of 1 to 10, in which 10 points were given to the case where there was no crack, and 1 point was given to the case where the composition had cracks to the degree of the crack density of the solid hair detergent composition of Comparative Example 2 (many large cracks occurred). It is determined that the larger the score is, the better the crack suppression property during storage is. When the score was 5 points or more, it was determined that there was no problem as an actual product with respect to the crack suppression property during storage.

Moldability

[0077] The difference between the shape of each solid hair detergent composition and the shape of the mold and the degree of the difference were evaluated. Specifically, the degree of divergence from the mold shape was evaluated on a scale of 1 to 5, in which 5 points were given to the case where the shape of the solid hair detergent composition was molded according to the shape of the mold and there was no divergence from the mold shape (neither indentation nor chipping was observed), and 1 point was given to the case where the composition had a divergence from the mold shape due to indentation and/or chipping to the degree of the divergence found in the solid hair detergent composition of Comparative Example 1. It is determined that the larger the score is, the more excellent the moldability is, and the more excellent the beauty of the appearance of the solid hair detergent composition is.

Lathering

[0078] A lathering operation was performed on 0.5 g of each solid hair detergent composition in the palm of a hand for 10 seconds using 100 g of water. The amount of the lather produced by the lathering operation was evaluated on a scale of 1 to 10, in which 10 points were given to the amount of the lather produced by the solid hair detergent composition of Example 13, and 1 point was given to the case where lather was not produced. It is determined that the higher the score is, the more excellent in lathering the solid hair detergent composition is.

Smoothness in Rinsing

[0079] Hair was washed with 1.0 g of each solid hair detergent composition and rinsed with hot water (38° C.). Smoothness of the hair in rinsing was evaluated on a scale of 1 to 10, in which 10 points (very smooth) were given to the solid hair detergent composition of Example 4, and 1 point (coarse) was given to the solid hair detergent composition of Comparative Example 2. It is determined that the higher the score is, the better the smoothness of the solid hair detergent composition in rinsing is.

TABLE-US-00001 TABLE 1 Examples 1 2 3 4 5 6 7 (A) Sodium 100 100 100 100 100 100 100 (58.7) (67.2) (63.1) (61.2) (63.1) (63.1) (69.5) Sodium — — — — — — — Sodium — — — — — — — (B)  chloride 6.7 7.3 7.3 7.3 7.3 7.3 2.4 (D) -10 — — — — — — — (D) -22 6.7 — — 4.9 — — — (E) Glycerin 6.7 — 9.8 9.8 — — — (E) Propylene glycol — — — — 9.8 — — (E) 1,3-butylene glycol — — — — — 9.8 — (F) Coconut oil fatty acid 14.7 14.6 14.6 14.6 14.6 14.6 14.6 (G) Sodium 2.3 2.4 2.4 2.4 2.4 2.4 2.4 (C) Water 33.3 24.4 24.4 24.4 24.4 24.4 24.4 (19.6) (16.4) (14.9) (16.9) Total 170 149 158 163 159 159 144 (B) part by weight/(C)  part by weight 0.20 1.39 0.30 0.30 0.30 0.30 0.10  part by weight/(C)  part by weight 0.20 — 0.40 0.40 0.40 0.40 —  when used (scale of 1 to 10) 10 8 8 10 6 6  property during storage 10 8 10 10 9 9 7 (scale of 1 to 10) Moldability (scale of 1 to 5) 4 4 2 2 4 4 4  (scale of 1 to 10) 9 10 9 9 9 9 8 Smoothness in  (scale of 1 to 10) 10 10 9 10 7 7 7 Examples 8 2 9 10 11 12 13 (A) Sodium 100 100 100 100 100 100 100 (68.3) (67.2) (65.1) (63.1) (72.5) (72.1) (72.0) Sodium — — — — — — — Sodium — — — — — — — (B)  chloride 4.9 7.3 12.2 17.1 8.9 8.9 8.9 (D) -10 — — — — — — — (D) -22 — — — — — — 0.3 (E) Glycerin — — — — — 0.6 0.6 (E) Propylene glycol — — — — — — — (E) 1,3-butylene glycol — — — — — — — (F) Coconut oil fatty acid 14.6 14.6 14.6 14.6 13.9 (G) Sodium 2.4 2.4 2.4 2.4 2.5 2.5 2.5 (C) Water 24.4 24.4 24.4 24.4 12.7 12.7 12.7 (16.7) (16.4) (15.9) (15.4) (9.2) (9.1) (9.1) Total 146 149 154 159 138 139 139 (B) part by weight/(C)  part by weight 0.20 0.30 0.50 0.70 0.70 0.70 0.70  part by weight/(C)  part by weight — — — — — 0.05 0.05  when used (scale of 1 to 10) 6 8 8 8 8 8 10  property during storage 8 8 8 5 6 6 (scale of 1 to 10) Moldability (scale of 1 to 5) 3 4 2 2 4 4 5  (scale of 1 to 10) 8 10 9 8 9 10 10 Smoothness in  (scale of 1 to 10) 8 10 9 10 7 7 9 Comparative Examples 1 2 3 4 5 (A) Sodium — — 100 100 100 (58.7) (67.2) (67.2) Sodium 100 — — — — Sodium (75.9) (B) Guar 7.3 7.3 — — — chloride (D) -10 — — 6.7 7.3 — (D) -22 — — 6.7 — 7.3 (E) Glycerin — — 6.7 — — (E) Propylene glycol — — — — — (E) 1,3-butylene glycol — — — — — (F) Coconut oil fatty acid — — 14.7 14.6 14.6 (G) Sodium — — 2.3 2.4 2.4 (C) Water 24.4 24.4 33.3 24.4 24.4 (18.5) (18.5) (19.6) (16.4) (16.4) Total 132 132 170 149 149 (B) part by weight/(C)  part by weight 0.30 0.30 — — — ( ) part by weight/(C)  part by weight — — 0.20 — —  when used (scale of 1 to 10) 1 6 4 6 4  property during storage 7 1 8 3 8 (scale of 1 to 10) Moldability (scale of 1 to 5) 1 2 5 4 3  (scale 1 to 10) 3 4 8 6 6 Smoothness in  (scale of 1 to 10) 2 1 2 2 1 In the table, the unit of  value showing the blending amount of each component is “part by weight” unless otherwise , and the  of numerical value in brackets is “wt %”. indicates data missing or illegible when filed