JP2001199877A - Foam soap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foam soap that has excellent diffusion to which the conventional soap never could attain and can continuously retain the fresh smell even after unsealing. SOLUTION: Molten soap composition is aerated and foamed, then this soap composition and the perfume components are mixed under the condition of a smaller sharing stress energy than that loaded on the aeration treatment, cooled, solidified to give the objective foam soap. The perfume component used here comprises (A) 30-80 wt.% of the component exerting the vapor pressure of >=0.1 mmHg at 20 deg.C, (B) 0-30 wt.% of the component exerting the vapor pressure of >=0.02-0.1 mmHg at 20 deg.C, and (C) 10-40 wt.% of the component exerting the vapor pressure of <=0.02 mmHg at 20 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerated soap which has an excellent scent diffusion property and can maintain a fresh scent even after opening.

[0002]

2. Description of the Related Art In general, perfume components incorporated in soap gradually evaporate into the atmosphere after opening. And
Since the rate of decrease due to volatilization is higher for volatile components having a higher vapor pressure, the composition of the fragrance component gradually increases, and the ratio of the high volatile component is relatively small, and the ratio of the low volatile component is relatively large. It changes. For this reason, there is a problem that the balance of the scent composed of the top note, the middle note, and the base note at the time of blending is lost, and the initial scent can no longer be obtained.

[0003] Therefore, the fragrance component blended into the soap,
Under the first condition that the change in the fragrance balance after opening is minimized, usually a prescription consisting of about 0 to 30% by weight of the top note, 30 to 60% by weight of the middle note, and 40 to 60% by weight of the base note. It has been.

[0004] Incidentally, in a light-weight soap containing bubbles in a soap base (Japanese Patent Laid-Open No. 4-218599, etc.), the fragrance component is stably retained in the bubbles of the base, so that the fragrance balance is maintained even after opening. Is kept stable. However, this lightweight soap is manufactured by adding a fragrance to the soap composition, then foaming by aeration treatment, cooling and solidifying, and a strong shearing force is applied at the time of the aeration. There is a problem that a top note, which has high volatility and is easily decomposed, volatilizes in a gas phase, and is oxidized and decomposed by contact with air, and the fragrance is deteriorated before molding.

On the other hand, recently, as a new method for producing a lightweight soap, a condition in which a soap composition contains bubbles by aeration treatment and then a shear strain energy smaller than the shear strain energy given under the aeration treatment is given. A method of mixing a soap composition and a fragrance is reported below (JP-A-11-43699).

In this production method, the mixing of the fragrance is performed after the aeration treatment in which a large stress is applied, and the fragrance is mixed with a smaller stress, so that the volatilization of the fragrance before the solidification of the soap can be suppressed. In addition, since the fragrance and the air do not come into contact with each other more than necessary, oxidation and decomposition of unstable components in the fragrance can be suppressed.

[0007] However, even with the above technique, the deterioration of the scent formation due to the aeration treatment can be suppressed, and the diffusivity of the scent is comparable to that of ordinary soap.

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to develop a soap which has an excellent diffusible scent which cannot be obtained with conventional soaps and which can maintain a fresh scent after opening. And

[0009]

According to the present invention, after a foam is contained in a molten soap composition by aeration treatment, the soap composition and a fragrance component are separated from the shear strain energy given under the aeration treatment. Is mixed under the condition that a small shear strain energy is given, and is manufactured by cooling and solidifying, and as the flavor component, (A) a component having a vapor pressure of 0.1 mmHg or more at 20 ° C of 30 to 80 or more. (B) 0 to 30% by weight of a component having a vapor pressure at 0.02 mmHg or more and less than 0.1 mmHg, and (C) 10 to 40% by weight of a component having a vapor pressure at 20 ° C of less than 0.02 mmHg. The present invention provides the used foam soap.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The foamed soap of the present invention is obtained by adding a bubble to a molten soap composition by aeration treatment, and then mixing the soap composition and the fragrance component with the shear strain energy given under the aeration treatment. It is produced by mixing under conditions where less shear strain energy is provided.

The above soap composition contains fatty acid soap, nonionic surfactants, inorganic salts, polyols, non-soap anionic surfactants, free fatty acids, water and the like. Additives such as agents, pigments, dyes, oils, and plant extracts are appropriately added. The temperature of the soap composition is maintained at or above the melting point because it is necessary to handle it in a liquid state. In particular, since the viscosity is high and the fluidity is poor, heat generation at the time of aeration increases and quality deterioration is caused. Is preferred.

An aeration treatment is performed to make the soap composition contain bubbles. The gas for the aeration treatment can be appropriately selected and used, and in addition to air, an inert gas such as nitrogen can be used. It is preferable to use an inert gas such as nitrogen in order to prevent the above. However, if the amount of nitrogen is too large, the high volatile components of the fragrance are likely to volatilize before being taken into the soap composition, so the amount of nitrogen is 30 to 90% by volume, particularly 50 to 90% by volume. Is preferred. As a volume fraction of bubbles contained in the soap composition by the aeration treatment, considering the solidification rate of the soap, hardness, ease of melting, etc., 10% or more,
In particular, it is preferably at least 30%. Further, from the viewpoint of the strength as a product, the content is preferably 80% or less.

The aeration device used for the aeration process is not particularly limited, and any known device can be used. For example, it is possible to use a rotor having a rotor that is rotationally driven in a stator into which a soap composition and a gas are fed. Specific examples of commercially available products include Euromix (manufactured by Ebara Corporation) and Turbomix (manufactured by Aikosha Corporation). And whip master (manufactured by Tanaka Food Machinery Co., Ltd.).

The shearing strain energy applied to the soap composition by the aeration treatment is such that the bubbles are sufficiently finely divided, so that coalescence or rising of the bubbles before the solidification of the soap is prevented, and the bubbles are uniformly dispersed. From the viewpoint that the properties of the foam soap obtained by dispersing the foam soap are not easily diffused and melted, the energy per unit processing amount (the work per unit time of the rotor is divided by the flow rate per unit time passing through the rotor. Value), 300 kPa or more, especially 50
It is preferably at least 0 kPa. In addition, the shear strain energy during this aeration is used to decompose components other than fragrances,
From the viewpoint of preventing accelerated deterioration such as oxidation, the pressure is preferably 10,000 kPa or less, particularly preferably 5,000 kPa or less.

After the aeration treatment, the soap composition after the treatment and the fragrance component are mixed, and the mixing is performed under the condition where the shear strain energy smaller than the shear strain energy given under the aeration treatment is given. Therefore, it is possible to prevent the fragrance component from moving to the gas phase side, and prevent oxidation and decomposition. Specifically, the energy per unit processing amount is 30
It is preferably at most 0 kPa, particularly preferably at most 100 kPa. Also,
The shear strain energy at the time of mixing the fragrance, from the viewpoint of sufficiently mixing the fragrance with the soap composition, 0.5 kPa or more,
Particularly, the pressure is preferably 10 kPa or more. Further, the temperature in the system at the time of mixing the soap composition and the perfume component is preferably 70 ° C. or lower, particularly 65 ° C. or lower, in order to minimize deterioration of the perfume due to heat history.

The apparatus used for mixing the soap composition and the fragrance component is not particularly limited, and any type can be used. For example, a static mixer (manufactured by Noritake Co., Ltd.) or a sulzer mixer (manufactured by Sumitomo Heavy Industries, Ltd.), which is a static mixer that performs mixing by dividing a soap composition and a fragrance by a plurality of elements; Multi-line mixer (manufactured by Satake Chemical Machinery Co., Ltd.), line homomixer (manufactured by Tokushu Kika Kogyo Co., Ltd.), etc., which are driven by a mixing unit; Typical mixing device.

After the soap composition and the fragrance are mixed, the mixture is poured into a mold and immediately cooled and solidified to room temperature to obtain a product. For cooling, it is preferable to use cooling water of 30 ° C. or lower, particularly 10 ° C. or lower.

In the present invention, (A) 2
Components with a vapor pressure of 0.1 mmHg or more at 0 ° C (top note) 30 to 80% by weight;
It is significant to use a component (middle note) of less than 0.1 mmHg (middle note) from 0 to 30% by weight, and (C) a component having a vapor pressure at 20 ° C of less than 0.02 mmHg (base note) from 10 to 40% by weight. . With conventional machined soap, the more highly volatile top notes are volatilized faster after opening, the more the top notes are blended in a large amount as described above, and the initial fragrance balance will be greatly disrupted. In other words, in the conventional method of producing light soap, even if a large amount of top notes is blended, it will volatilize, oxidize, decompose, etc. due to the large shear strain energy applied during aeration, so that only those with a poor scent can be obtained. It was not done. However, in the present invention, as described above, after aeration, by mixing the fragrance under the condition where a smaller shear strain energy is given than at the time of aeration, it becomes possible to formulate a large amount of the above-described top notes. Further, it is possible to use a volatile component which has a high vapor pressure and is easily volatilized, which cannot be used as a top note with conventional soaps. Thereby, in the bubble soap of the present invention, it is possible to mix a fragrance of a prescription excellent in fragrance, without being affected by reduction of the top note at the time of production, deterioration, etc., and change in fragrance balance after opening. It is a thing.

In the present invention, the perfume component (A) having a vapor pressure of not less than 0.1 mmHg at 20 ° C. is classified as a so-called top note, for example, limonene, lemon oil, orange pera, bergamot oil, Tridecenal, cineol, lime oil, grapefruit oil, hexenol, hexyl aldehyde, cis-3
-Hexenol, cis-3-hexenyl acetate, cis-3
-Hexenyl butyrate, hexenyl acetate, trans-2-hexenal, dibutyl sulfide, dimethyl sulfide, trimethylhexenal, ethyl-2-
Methyl butyrate, fractone, manzanate, allyl heptanoate, acetal, ethyl acetate, ethyl acetoacetate, ethyl formate, ethyl heptanoate, ethyl octanoate, ethyl propionate, benzaldehyde, cis-6-nonenal, melonal , Ethyl butyrate, ethyl isobutyrate, ethyl isovalerate, isoamyl acetate, isoamyl alcohol, isoamyl formate, isobutyl acetate, prenyl acetate, heptyl acetate, octenol, octenyl acetate, dimethylol, ethyl amyl ketone, methyl amyl ketone, Methylheptenone, spearmint oil, isoamylisovalerate,
Methyl benzoate, paracresyl methyl ether, octyl aldehyde, nonyl aldehyde, galvanum oil, maltol, lavanging rosso, rosemary oil, lavender oil, eucalyptol, camphor, borneol isobornyl acetate, citronella oil, rose oxide, tetrahydrogela Nial, tetrahydrolinalool, methylbenzyl alcohol and the like can be mentioned.

In the present invention, the fragrance component having a vapor pressure at 20 ° C. of not less than 0.02 mmHg and less than 0.1 mmHg in (B) is classified as a so-called middle note, for example, methyloctylacetaldehyde, citral, lemongrass. Oil, orange bitter oil, hexyl butyrate, isocyclocitral, methyl octyne carbonate, butyleaf oil, diethyl malonate, allyl heptanoate, gamma nonalactone nonenol, taget oil, linalyl acetate, methyl nonyl ketone, peppermint oil , Fentyl acetate, fentyl alcohol, ethyl salicylate, methyl salicylate, anethole, estragole, caraway oil, black pepper oil, celery seed oil, column oil, parsley Oil, citronellyl formate, delta damascon, damacenone, ethyl benzoate, ethyl linalool, linalool, terpineol, methyl phenyl acetate, decyl aldehyde, undecyl aldehyde, undecylenaldehyde, dodecyl aldehyde, styryl aldehyde, allyl amyl glycolate, lavender Oil, terpinyl acetate, methyl isoeugenol, geraniol,
Geranium oil, geranyl acetate, nerol, neryl acetate, phenylethyl acetate, phenylethyl alcohol, rosedomeabsolute, tetrahydrogeraniol, tetrahydrogeranyl acetate, benzyl acetate, benzylacetone, benzyl alcohol, iranylane oil, anisaldehyde,
Examples include terpineol, phenylacetaldehyde, butylcyclohexyl acetate, civet absolute, ethyl phenyl acetate and the like.

In the present invention, the fragrance component having a vapor pressure at 20 ° C. of less than 0.02 mmHg of (C) is classified as a so-called base note, for example, linalool oxide, rubofix, hexenyl salicylate, flarorozone, Helional, ethyl methyl phenyl glycidate, raspberry ketone, undecalactone, delta decalactone, gamma decalactone, deltown decalactone, delta dodecalactone, gamma dodecalactone, delta nonalactone, allyl phenoxy acetate, alpha damascon, dimethyl benzylcal Vinyl acetate, decenol, diphenylmethane, cis jasmon, dihydrojasmon, edion, dimethyl anthranilate, methyl anthranilate, porjonal, cyclamen alde Hyd, anisyl acetone, phenylacetaldehyde, allyl ionone, dihydro beta ionone, ionone alpha, ionone beta, ceryl methyl ether, moss synth, kashmelan, celestride, ethylene brasilate, muscone, pentalide, cibetone, phenylethyl phenylacetate, ethyl Vanillin, vanillin, heliotropin, heliotropylacetone, methylnonylacetaldehyde,
Allyl cyclohexane propionate, eugenol,
Citronellol, Citronellyl Acetate, Diphenyl Oxide, Rosinol, Hexylcinnamic Aldehyde, Lilyal, Lillal, Methyl Ionone, Cedarwood Oil, Cedrol, Cedrol Acetate, Acetyl Cedrene, Cedrill Methyl Ether, IsoE Super, Sandal Synth, Patchouli Oil , Pearl Ride, Indole, Dynamic Alcohol, Coumarin,
Amyl salicylate, benzyl salicylate, hexyl salicylate and the like can be mentioned.

As described above, the fragrance component used in the present invention comprises (A) a top note: 30 to 80% by weight, (B) a middle note: 0 to 30% by weight, and (C) a base note: 10 to 40% by weight. %, But the preferred composition is (A) top note: 40-80% by weight, (B) middle note: 5-25
% By weight, (C) base note: 15-35% by weight, particularly preferred composition is (A) top note: 45-70% by weight, (B) middle note: 10-20% by weight, (C) base note : 20-35
% By weight.

[0023]

EXAMPLES In the following Examples and Comparative Examples, perfume and soap compositions having the following formulations were used.

[Fragrance formula] Fragrance A (for bubble soap) ・ Top note (vapor pressure at 20 ° C. 0.10 mmHg or more) (Components) (parts by weight) Bergamot oil 245 Lemon oil 50 Orange pera 100 Grapefruit oil 50 cis-3 -Hexenol 5 Fractone 50 Subtotal 500 (composition ratio 50% by weight) ・ Middle note (vapor pressure at 20 ° C 0.02mmHg or more and less than 0.10mmHg) (Components) (parts by weight) Linalool 100 Linalyl acetate 50 Subtotal 150 (composition ratio 15% by weight)・ Base note (vapor pressure at 20 ℃ less than 0.02mmHg) (Ingredients) (parts by weight) Helional 20 Edion 150 Sedolyl methyl ether 50 Pentalide 100 Heliotropin 30 Subtotal 350 (35% by weight) Total 1000 (100% by weight ) )

Fragrance B (for machined soap) ・ Top note (vapor pressure at 20 ° C. 0.10 mmHg or more) (Components) (parts by weight) Nonylaldehyde 5 Galvanum oil 5 Lavender oil 30 Subtotal 36 (3.6% by weight) Middle note (vapor pressure at 0.02 mmHg or more and less than 0.10 mmHg at 20 ° C) (Ingredients) (parts by weight) dodecylaldehyde 5 phenylethyl alcohol 259 geraniol 100 benzyl acetate 50 terpineol 50 linalyl acetate 50 subtotal 464 (46.4% by weight) Base note (vapor pressure less than 0.02 mmHg at 20 ℃) Hexylcinnamic aldehyde 150 Lilyal 100 Cedarwood oil 50 Pearlride 100 Coumarin 50 Benzyl salicylate 50 Subtotal 500 (50% by weight) Total 1000 (100% by weight)

[Soap Composition Formulation] Soap composition A (foam soap) (Component) (% by weight) Sodium laurate 16.0 Sodium myristate 16.0 Sodium cocoyl isethionate 3.0 Sodium lauroyl lactate 2.0 Polyoxyethylene (12) monolau Rate 4.0 Lauric acid 2.0 Myristic acid 2.0 Glycerin 13.0 Sorbitol 3.0 Sodium chloride 1.2 Pigment 0.3 Stabilizer (chelating agent) 1.0 Fragrance 1.5 Water 35.0 Total 100.0

Soap composition B (mechanical kneading soap) (Ingredient) (% by weight) Soap base * 88.5 Water 10.0 Pigment 0.3 Perfume 1.2 Total 100.0 *: Palm kernel fatty acid / palm stearin fatty acid = 50/50
Na salt

Example 1 A soaping apparatus A (Euromix manufactured by Ebara Corporation) was used at a flow rate of 39 kg / hr of soap composition A adjusted to 70 ° C. and at a flow rate of 26 N l / hr of air containing 87.5% by volume of nitrogen. MDF0). In this aeration apparatus, the rotor was rotated under the conditions of 1000 kPa (500 rpm) to perform aeration treatment. Then, the soap composition after the aeration treatment, and a mixture of perfume A and a pigment (0.1 wt% aqueous dispersion of titanium oxide) in a ratio of 3: 2 (weight ratio) were statically mixed at a flow rate of 1 kg / hr, respectively. It was sent to the equipment (Noritake Company Limited static mixer, diameter 11mm, 21 elements). In this mixing device, mixing was continuously performed under the condition of a pressure loss of 100 kPa. The mixture sent out from the mixing device was poured into a mold and cooled and solidified to obtain a product. The specific gravity of the product was 0.6 and contained 40% gas.

COMPARATIVE EXAMPLE 1 A soap composition A adjusted to 70 ° C. was mixed at a flow rate of 39 kg / hr with a 3: 2 (weight ratio) mixture of a fragrance A and a pigment (a 0.1% by weight aqueous dispersion of titanium oxide). At a flow rate of 1 kg / hr, and air containing 87.5% by volume of nitrogen, a flow rate of 26 Nl / hr was sent to an aeration apparatus (Euromix MDF0 manufactured by Ebara Corporation). In this aeration apparatus, the rotor was rotated under the conditions of 1000 kPa (500 rpm) to perform aeration treatment. The mixture sent out from the aeration apparatus was poured into a mold, cooled and solidified to obtain a product. The specific gravity of this product is 0.6
It contained 0%.

Comparative Example 2 All components of the perfume A and the soap composition B were mixed by a mixer for 15 minutes, and then kneaded with a three-roll mill (manufactured by Nippon Kakoki Co., Ltd.) under cooling water at 25 ° C. Thereafter, the product was extruded with a vacuum two-stage prodder (manufactured by Nippon Kakoki Co., Ltd.) while degassing (the cylinder portion was 25 ° C., and the conical cone portion was 40 to 45 ° C.), and the product was obtained by stamping. The specific gravity of this product is 1.04 and contains no gas.

Comparative Example 3 A product having a specific gravity of 0.6 and containing 40% of gas was obtained in exactly the same manner as in Example 1 except that perfume B was used instead of perfume A.

Comparative Example 4 A product having a specific gravity of 0.6 and containing 40% of gas was obtained in exactly the same manner as in Comparative Example 1, except that perfume B was used instead of perfume A.

Comparative Example 5 A product having a specific gravity of 1.04 and containing no gas was obtained in exactly the same manner as in Comparative Example 2, except that perfume B was used instead of perfume A.

Test Example 1 With respect to the various soaps obtained in Example 1 and Comparative Examples 1 to 5, the diffusibility and stability of the fragrance were evaluated according to the following methods.

Evaluation method Evaluation was carried out according to the following method by sensory evaluation when hands were washed with lukewarm water (around 35 ° C.) using a panel of 5 persons, and based on the conventional mechanical kneading soap (Comparative Example 5).
A sample superior to this was "3", a sample equivalent thereto was "2", and a sample poorer than this was "1".

(1) Diffusion of scent The soap immediately after opening was evaluated by directly smelling the scent during washing (when lathering for 10 seconds).

(2) Stability of fragrance Based on the soap immediately after opening, the change in the strength and balance of the fragrance of the soap after use for 2 weeks and the fragrance during washing (when lathering for 10 seconds) and residual scent (towel) Evaluation was made by directly sniffing the scent remaining on the skin 5 minutes after drying.

(Judgment Criteria) The average of the evaluation is 2.6 to 3.0: The average of the A evaluation is 1.6 to 2.4: The average of the B evaluation is 1.0 to 1.4: C

Results The results are shown in Table 1.

[0040]

[Table 1]

[0041]

The bubble soap of the present invention has an excellent diffusibility which has not been obtained in the past and can maintain a fresh scent after opening.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C083 AA122 AB332 AC082 AC122 AC132 AC152 AC172 AC212 AC242 AC352 AC402 AC472 AC842 AD532 BB41 CC02 CC23 DD21 EE06 EE07 FF05 4H003 AB03 AC08 BA06 DA02 EA19 EB04 EB05 ED02 FA26

Claims (1)

[Claims] 1. After the soap composition contains bubbles by aeration treatment, the soap composition and the fragrance component are given a shear strain energy smaller than the shear strain energy given under the aeration treatment. A bubble soap produced by mixing, cooling and solidifying under the conditions, wherein as the fragrance component, (A) a component having a vapor pressure at 20 ° C of 0.1 mmHg or more 30 to 80% by weight, (B) 20 ° C
Component 0-3 whose vapor pressure at 0.02 mmHg or more and less than 0.1 mmHg
Foam soap using 0% by weight and (C) 10 to 40% by weight of a component having a vapor pressure of less than 0.02 mmHg at 20 ° C.