JP2799362B2 - Post-foamable gel composition - Google Patents

Description

The present invention relates to contents for aerosol products. More particularly, it relates to a post-foamable gel composition for use in aerosol products made from 40% or more of water and a gelling agent, a surfactant, a post-foaming agent, or made by further adding an active ingredient and alcohols.

According to the present invention, there is provided a novel gel composition which does not contain soap (that is, water-soluble salts of higher fatty acids) in the composition, has no sticky feeling after use, and exhibits post-foamability.

Representative products according to the present invention include, for example,
Cosmetics such as lotions, hair treatment agents, hair setting agents, hair dyes, permanent waving agents, anti-inflammatory analgesics,
Pharmaceuticals such as anti-itching agents and polishing agents for automobiles and furniture are exemplified.

[Conventional technology]

As the post-foamable gel composition, JP-B-49-34912 describes a composition which maintains a gel state for 60 seconds after discharge and foams when a shear stress is applied.

This known post-foaming gel composition contains water 40% or more, soap (a water-soluble salt of a higher fatty acid), a water-soluble gelling aid and a post-foaming agent as essential components. Group hydrocarbons and halogenated hydrocarbons are used alone or as a mixture.

[Problems to be solved by the invention]

Conventional post-foamable gel compositions have high gel stability,
The gel state is maintained for at least 60 seconds after discharging, but it is possible because soap is used as an essential component, while foaming when applying shear stress to the one discharged with gel, but the foamed foam contains the soap component It turned out that there was a disadvantage that it would not disappear because it was there.

With respect to the embodiment shown in JP-B-49-34912, the foam which is foamed when the composition is taken out from the palm and rubbed with a finger is forever rubbed with both hands. It does not disappear as it remains and cannot be easily wiped off. This phenomenon has no problem with shaving agents or shampoos that are washed off after use, but a cleaning agent that wipes off dirt with tissue,
It has been found that the composition is unsuitable for a treatment agent or the like which is to be treated without being applied.

Furthermore, addition of alcohols such as ethanol has a drawback that gelation becomes difficult, and there are considerable restrictions on the product design because the composition derived from soap is alkaline.

Therefore, the present inventors have conducted various studies on the post-foamable gel composition, and the time that the discharged gel holds is
It has been found that the time required for applying the gel to the target site and moistening it is as long as 30 seconds.

Therefore, as a result of intensive studies, the gel state was maintained for more than 30 seconds after discharge, foaming occurred when shearing stress was applied, and when shearing stress was continuously applied, it usually disappeared in about 30 seconds even if it was usually about 10 seconds longer. We found a foamable gel composition after foaming and containing a new composition that does not contain soap and does not need to be rinsed with water after use or wiped off with a wet towel, leading to the completion of the present invention.

[Means for solving the problem]

The present invention provides: (1) a gelling agent of 0.01 to 5% by weight, and a surfactant of 0.01 to 5%.
% Of water, 40 to 98% by weight of water, 0.5 to 20% by weight of a post-blowing agent and / or 0.1 to 10% of the active ingredient in said composition.
A composition comprising 5% by weight of an alcohol and 5 to 50% by weight of an alcohol. The composition maintains a gel state at normal temperature and atmospheric pressure for at least 30 seconds, foams when a shear stress is applied, and continues to apply a shear stress. A post-foamable gel composition characterized in that it defoams in a short period of time.

(2) the gelling agent is a carboxyvinyl polymer,
When the surfactant is a nonionic type of HLB 10 or more, and the post-foaming agent is one or a mixture of two or more kinds selected from isopentane, normal pentane, isobutane, normal butane, propane, and dimethyl ether, and includes an alcohol. The post-foamable gel composition according to the above (1), wherein the alcohol is a monohydric alcohol.

(3) The above (1) or (2), wherein the post-foaming agent comprises at least 80% by weight of a component selected from isopentane and normal pentane and at most 20% by weight of a component selected from isobutane, normal butane, propane and dimethyl ether. And b) a post-expandable gel composition.

It is about.

The gelling agent used in the present invention is a component for gelling the final composition, for example, carboxyvinyl polymer, polyvinyl alcohol, sodium polyacrylate, synthetic polymers such as polyethylene glycol, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, Hydroxypropyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose,
Soluble starch, semi-synthetic polymers such as propylene glycol alginate, guar gum, locust bean gum, quince seed, carrageenan, galactan, acacia, tragacanth, pectin, mannan, starch, xanthan gum, dextrin, succinoglucan, curdlan, gelatin, Examples include natural polymers such as casein, albumin, and collagen, but are not limited thereto as long as the aqueous solution can be gelled.

The gelling agent is present in the composition in an amount of 0.01 to 5% by weight, preferably 0.1% by weight.
Use 05-2% by weight. If the addition amount is less than 0.01% by weight, a sufficient gel cannot be obtained, and if it exceeds 5% by weight, the gelling agent becomes uncomfortable due to stickiness.

The surfactant used in the present invention solubilizes and disperses the post-foaming agent active ingredient. Examples thereof include polyoxyethylene ethylene ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether, and polyoxyethylene castor oil. Nonionic forms such as derivatives, alkyl sulfates, polyoxyethylene alkyl ether sulfates, N-acyl amino acid salts,
N-acylmethyltaurine salt, polyoxyethylene alkyl ether acetate, alkyl sulfocarboxylate, α
-Anionic types such as olefin sulfonates, alkyl phosphates and polyoxyethylene alkyl ether phosphates, cationic types such as alkyl ammonium salts and alkyl benzyl ammonium salts, amphoteric types such as betaine acetate, imidazolium betaine and lecithin; Examples include a mold and the like, but the invention is not limited thereto.

The surfactant is present in the composition in an amount of 0.01 to 5% by weight, preferably
Use 0.1-3% by weight. If the added amount is less than 0.01% by weight, the solubilizing and dispersing of the active ingredient of the post-blowing agent is not sufficient, and if it exceeds 5% by weight, unpleasant feeling is given due to stickiness of the surfactant.

Water used in the present invention is a base of the composition,
Usually, tap water, distilled water, ion-exchanged water or the like is used, and 40 to 98% by weight, preferably 60 to 95% by weight of the composition is used. If the addition amount is less than 40% by weight, not only sufficient foaming cannot be obtained, but also it is economically undesirable. On the other hand, if it exceeds 98% by weight, the amounts of other components are substantially affected, and the composition of the present invention cannot be obtained.

The post-foaming agent used in the present invention is to bring the gel-like composition opened to the atmospheric pressure into a foamed state, for example,
Aliphatic hydrocarbons such as propane, butane, pentane, and hexane; partially or totally halogenated hydrocarbons such as trichlorotrifluoroethane and dichlorotetrafluoroethane; and dimethyl ether. Not something.

The post-blowing agent is used in the composition in an amount of 0.5% to 20% by weight, preferably 1% to 10% by weight. If the amount is less than 0.5% by weight, sufficient foaming cannot be obtained, and if it exceeds 20% by weight, foaming occurs at the moment of opening to atmospheric pressure, which is not preferable.

The reason why the liquefied gas such as isobutane, normal butane, propane or dimethyl ether is used in an amount of 20% by weight or less is to improve the foamability.

The alcohol used in the present invention may be a monohydric alcohol such as ethyl alcohol or isopropyl alcohol, or a polyhydric alcohol such as ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin or sorbitol in the composition in an amount of 1% by weight to 50%. % By weight, preferably
5% by weight to 20% by weight can be used.

These monohydric alcohols, ethyl alcohol, denatured ethyl alcohol and isopropyl alcohol help to improve the transparency of the resulting gel and prevent freezing at low temperatures.

The post-foamable gel composition according to the present invention is used as a cosmetic, such as a lotion, a wiping agent for part or all of the body, a hair treatment agent, a hair setting agent, a hair dye, a permanent waving agent, an antiperspirant, a depilatory agent and the like. It can be prepared as a pharmaceutical formulation by adding an anti-inflammatory analgesic, an anti-itch agent, or an active ingredient used in household products such as a polishing agent for automobiles and furniture, a hard surface cleaner, a detergent for clothes, a deodorant, and the like. it can.

Next, the present invention will be described in more detail based on examples, but the present invention is not limited to only these examples.

〔Example〕

Example 1 (Lotion) 10.0 parts of 95% brucine-denatured ethanol, ion-exchanged water 7
6.55 parts, glycerin 5.0 parts, NP-20 as surfactant
(Nikko Chemicals Co., Ltd., HLB20.0) 1.0 part, Carbopol 940 (BFGoodrich Chemical Compa
ny) 0.2 parts, Bouquet 8451 / SA (Yamamoto Perfume Co., Ltd.) 0.05 parts as a fragrance, 0.2 parts triethanolamine, and 7.0 parts isopentane as a post-foaming agent. Transparent pressure-resistant container made of polyethylene terephthalate for aerosol. And attached with an aerosol valve, shaken well, and pressurized to about 2 kg / cm ² (gauge pressure) with nitrogen gas to prepare a post-foaming gel composition (60 g).

A wiping agent (Example 2), a hair setting agent (Example 3), a hair treatment agent (Example 4) and a bactericide (Example 5) were prepared in the same manner as in Example 1 except that the composition was changed. did.

Example 2 (Washing agent) w / w% Deionized water 91.819 Surfactant NP-20 0.8 (Nippon Chemicals Co., Ltd., HLB20.0) Gelling agent Carbopol 940 0.18 (BFGoodrich Chemcal Company) Dyeing Blue No. 1 0.001 triethanolamine 0.2 post-foaming agent isopentane 7.0 100.0 Example 3 (hair setting agent) w / w% 95% brucine denatured ethanol 10.0 ion-exchanged water 73.099 glycerin 5.0 surfactant BC-40TX 1.0 (Nikko Chemicals Co., Ltd., HLB20) .0) Active ingredient Vinylpyrrolidone acetic acid 3.0 Vinyl copolymer Fragrance Jasmin BAT-2862 (Takasago Fragrance Co., Ltd.) 0.1
Dye Red No. 102 0.001 Gelling agent Carbopol 934 0.4 (BFGoodrich Chemcal Company) Triethanolamine 0.4 Post-foaming agent Isopentane 6.3 n-butane 0.7 100.0 Example 4 (Hair treatment agent) w / w% 95% Brusin-modified ethanol 10.0 ions Exchanged water 73.599 Glycerin 5.0 Surfactant AM-301 (Nikko Kerukaruzu K.K.) 3.0 Active ingredient CA-2465 (Nikko Kerukaruzu K.K.) 0.3 〃 Promois W-52 (Seiwa Kasei) 1.0 Fragrance Jasmin BAT-2862 (Takasago) Fragrance Co., Ltd.) 0.1
Dye Yellow No. 5 0.001 Gelling agent Hydroxyethylcellulose 1.0 Post-foaming agent n-pentane 5.0 100.0 Example 5 (bactericide) w / w% 95% geraniol-denatured ethanol 10.0 Deionized water 82.9 Surfactant PBC-44 (Nikko Kelkarz ( 1.0) Active ingredient CA-101 (Nikko Kelkarz Co., Ltd.) 0.1 Gelling agent Hydroxyethyl cellulose 1.0 Post-foaming agent Isopentane 5.0 100.0 Example 6 (Lotion) Surfactant NP-20 (91.819 parts by weight of ion-exchanged water) 0.8 parts by weight of the same as in Example 1 and the gelling agent Carbopol 940 (B.
A solution obtained by dissolving 0.18 parts by weight of F. Goodrich Chemical Company, 0.2 parts by weight of triethanolamine, and 0.001 part by weight of Dye Blue No. 1 was used as a first stock solution. 93 parts by weight of undiluted solution and 2nd undiluted solution, 7
Parts by weight and sent to one pipeline homomixer with two cylinders, agitated and uniformly mixed gel composition was taken out, 100 parts by weight were filled into the inner bag side of the aerosol pressure-resistant container having an inner bag, and a valve After mounting, a foaming gel composition lotion was prepared. A liquefied petroleum gas (composed of propane and isobutane) having a gauge pressure of 4.0 kg / cm ² at 25 ° C from a gas injection valve provided at the bottom of the aerosol pressure container in the space formed inside the outer bag and inside the aerosol pressure container. , And a spout was attached to an aerosol valve to prepare a stock solution and a gas-separated lotion aerosol product.

〔The invention's effect〕

The post-foamable gel composition of the present invention does not use soap,
It is good without stickiness even if not washed off with water or wiped off with a wet towel after use, and can be easily wiped off. Further, it has the property that once foaming is continued, foam once foamed easily disappears. Therefore, the post-foamable gel composition of the present invention is very useful for those who want to wipe off with a lotion or tissue. In the case of a leave-on agent such as a treatment agent, it is not only possible to know the applied part because it is foamed, but also it is easily defoamed, so there is no problem in the appearance at all. Are also very useful.

Further, it is easy to add alcohol, and it can be expected to improve the blending of various active ingredients and the feeling of use.

Hereinafter, in order to specifically explain the effects of the present invention, test examples regarding the dispersibility, foaming property, defoaming property, gel state, and stickiness of the post-foamable gel composition of the present invention will be described.

Test Example (a) Test Method (Dispersibility) The composition in a transparent pressure-resistant container was observed, and the dispersibility of the post-foaming agent in other components was evaluated according to the following criteria.

(Criterion criteria) ：: Uniformly dispersed ×: Discontinuous phase recognized and not uniformly dispersed (foaming) Approximately 1 g of post-foamable gel composition on a glass plate at room temperature
After being discharged and left for 30 seconds, it was spread with a finger to a diameter of about 5 cm, and the foaming state was evaluated according to the following criteria.

(Judgment criteria) A: No foaming was observed for 30 seconds after ejection, foaming was observed after spreading B: Foaming was observed immediately after ejection or 30 seconds after ejection C: Foaming 30 seconds after ejection Non-recognizable, foaming is not observed even after spreading (defoaming) Post-foamable gel composition is placed on a glass plate at room temperature in an amount of about 1 g.
The foam was discharged, spread with a finger to a diameter of about 5 cm, allowed to stand still in a foamed state, and the time required for disappearance of the foam was measured and evaluated according to criteria.

(Judgment criteria) A: Bubble almost disappears within 2 hours after foaming B: Bubble almost disappears within 12 hours after foaming C: Foam that does not disappear for more than 12 hours (gel state) The composition in the transparent pressure-resistant container that has been left standing upright for 24 hours in the state of
The time required for 80% to move downward was measured, and the gel state was evaluated according to the following criteria.

(Judgment criteria) A: 60 seconds or more B: 30 seconds or more but less than 60 seconds C: 30 seconds or less (stickiness) After discharging about 0.5 g of foamable gel composition to the back of the hand, use a finger to measure the diameter. It was spread to about 3 cm, left for about 1 second, and then wiped off with tissue paper to evaluate the sticky feeling according to the following criteria.

(Judgment criteria) A: No stickiness B: Somewhat sticky C: Some stickiness (b) Test results The results of this test are as shown in Table 1.

Comparative Example 1 in the table is a shaving agent prepared in the same manner as in Example 1 except that the composition contains soap as follows.

Comparative Example 1 (shaving agent) w / w% 95% brucine-denatured ethanol 10.0 ion-exchanged water 64.75 glycerin 5.0 palmitic acid 5.8 sularic acid 2.0 triethanolamine 4.2 NP-20 (Nikko Chemicals Co., Ltd.) 1.0 Carbopol 940 0.2 Bouquet 8451 / SA (Yamamoto Perfume Co., Ltd.) 0.05 isopentane 7.0 100.0 Comparative Example 2 shows the same composition as Example 1 except that the surfactant was omitted.

Comparative Example 3 shows a case where the gelling agent was removed from Example 1.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI A61K 7/15 A61K 7/15 7/50 7/50 C08J 9/00 C08J 9/00 9/30 9/30 C09K 3/30 C09K 3/30 Z (58) Field surveyed (Int. Cl. ⁶ , DB name) C09K 3/00 103 C09K 3/00 111 A61K 7/00-7/50

Claims (3)

(57) [Claims] 1. Gelling agent 0.01-5% by weight, nonionic surfactant 0.01-5% by weight, water 40-98% by weight, post-foaming agent 0.5
A composition containing 0.1 to 10% by weight of an active ingredient and 5 to 50% by weight of an alcohol to the composition containing at least 30 seconds at room temperature and atmospheric pressure. A post-foamable gel composition, which retains and foams when a shear stress is applied, and defoams within 30 seconds when a shear stress is continuously applied. 2. The gelling agent is a carboxyvinyl polymer, the nonionic surfactant is HLB10 or more, and the post-foaming agent is one or more selected from isopentane, normal pentane, isobutane, normal butane, propane and dimethyl ether. 2. The post-foamable gel composition according to claim 1, wherein the composition is a mixture of two or more kinds, and when the composition contains alcohols, the alcohol is a monohydric alcohol. 3. The post-foaming agent comprises at least 80% by weight of a component selected from isopentane and normal pentane and at most 20% by weight of a component selected from isobutane, normal butane, propane and dimethyl ether.
Or the post-expandable gel composition according to 2.