JP5997531B2 - Liquid bath agent - Google Patents

Description

  The present invention relates to a liquid bath agent.

  Conventionally, bathing agents are generally blended with inorganic salts such as sodium sulfate, sodium carbonate, sodium bicarbonate, sodium chloride, and flavors, pigments, plant extracts, etc., and have fatigue recovery, relaxation, skin beautifying effects, etc. Due to expectations, demand has increased in recent years.

  In recent years, with the diversification of consumer needs, in addition to the above effects, there has been a demand for bathing agents for the purpose of protecting the skin and imparting smoothness, and oily properties such as polyols and fats and oils. Liquid baths containing ingredients have been developed.

  In order to promote the above-mentioned effects, it has been studied to add various raw materials. For example, in order to enhance the skin moisturizing effect, various organic salts, inorganic salts, humectants such as glycerin, oils and fats, vitamins, proteins such as collagen, amino acids, surfactants, water-soluble polymers A compound etc. are mix | blended and many of those techniques are disclosed.

  A liquid bath containing rice germ oil and silicone oil is known as a bath for the purpose of enhancing the moisturizing effect of the skin as described above (Patent Document 1). Patent Document 1 describes that by adding rice germ oil to a liquid bath agent, a liquid bath agent having excellent feeling after use, no stickiness, and moist feeling can be obtained. Yes. In addition to the moisturizing effect, a blend of a water-soluble polymer is known (Patent Documents 2 and 3) as an improvement in the feeling of stickiness due to oil components.

Japanese Patent Laid-Open No. 06-080556 JP 2006-213676 A JP 2010-043037 A

  When using the above-mentioned conventional liquid bathing agent, you can feel the smoothness and moistness of the skin immediately after bathing, but after a while the touch is lost, and the good skin feel lasts for a long time. I couldn't get it.

  An object of the present invention is to provide a bath agent that can maintain a good feeling such as smoothness and moist feeling immediately after bathing for a long period of time in addition to a good feeling during use.

  The present inventors have found that when the water bath contains a water-soluble polymer and rice germ oil and / or mineral oil, the skin moist feeling after bathing is maintained. The invention has been completed. Specifically, the present invention provides the following.

  (1) A liquid bath containing a water-soluble polymer and rice germ oil and / or mineral oil.

  (2) The liquid bath agent according to (1), wherein the rice germ oil is contained in an amount of 0.1% or more.

  According to the present invention, it is possible to obtain an excellent moist feeling of the skin immediately after bathing, to prevent rustiness and to maintain the good feeling for a long period of time. Specifically, by using the hot water containing the bathing agent of the present invention, it is possible to further enhance the continuity of the stratum corneum water content and skin blood flow in the skin after bathing.

  Hereinafter, embodiments of the present invention will be described.

  The liquid bath of the present invention contains at least a water-soluble polymer and rice germ oil and / or mineral oil. Especially, it is preferable from the point of the sustainability of a touch to contain all three of water-soluble polymer, rice germ oil, and mineral oil. Furthermore, in addition to these, it is preferable to contain water as a solvent.

  The water-soluble polymer is preferably a polycondensation polymer having a hydroxyl group, and may be appropriately selected from natural polymers or synthetic polymers, for example. However, natural polymers are preferable from the viewpoint of safety and generally inexpensive, and sugar polymers described below are more preferable from the viewpoint of excellent emulsifying function.

The sugar polymer, hydroxypropyl cellulose, sparse hydrated hydroxypropyl methylcellulose. These can be used in combination of two or more .

  The amount of the water-soluble polymer may be appropriately set according to the amount of the oil phase, and is not particularly limited, but is preferably included in the liquid bath agent at 0.0001% or more and 30% or less. If the water-soluble polymer is less than 0.0001%, it becomes difficult to maintain a moist feeling. On the other hand, if it exceeds 30%, stickiness occurs after bathing, which is not preferable.

  The rice germ oil of the present invention is an oil obtained from rice bran or rice germ, and is extracted from rice bran or rice germ. For example, after heat treatment, it is extracted with a solvent such as hexane and manufactured through steps such as solvent removal, purification, and deodorization. Ingredients include tocopherol, tocotrierol, sterol, squalene, ferulic acid, γ-oryzanol, phytin, inositol and the like.

  It is preferable that rice germ oil is contained in the liquid bath agent in an amount of 0.01% or more. If the rice germ oil is less than 0.01%, a moist feeling cannot be obtained. Further, the rice germ oil is preferably less than 80% in the liquid bath. If the rice germ oil is more than 80%, it causes stickiness and stains on the bathtub.

  The mineral oil of the present invention is a mixture of hydrocarbons that is liquid at room temperature, obtained by distilling petroleum and then refining it by removing solid paraffin.

  The mineral oil is preferably contained at 95% or less in the liquid bath agent. If the mineral oil is more than 95%, the sticky feeling and bathtub stains are produced. Moreover, it is preferable that 0.1% or more of mineral oil is contained in a liquid bath agent. If the mineral oil is less than 0.1%, it will be difficult to maintain smoothness.

  Water that can be used for cosmetics can be used without particular limitation. For example, purified water, ionic water, deep ocean water, and the like can be used.

  Further, in the bathing agent of the present invention, in addition to the above components, depending on the purpose, oily components other than rice germ oil and mineral oil, medicinal components such as herbal medicines / plant extracts / vitamins, polysaccharides / proteins / Amino acids / enzymes, alcohols, fragrances, dyes / pigments / pigments and the like can be blended.

  Examples of oil components other than rice germ oil and mineral oil include, for example, hydrocarbon oils such as liquid paraffin and squalane; ester oils such as cetyl octoate, isopropyl adipate, isopropyl palmitate, and isopropyl myristate; Contains vegetable oils such as germ oil, olive oil, jojoba oil, soybean oil, almond oil, cypress oil, cinnamon oil, castor oil, coconut oil, lavender oil, eucalyptus oil, rose oil, sage oil, and at least one hydrocarbon It is preferable to contain a liquid oil of the system. In addition, the said oily component may combine 1 type (s) or 2 or more types.

  Herbal medicines / plant extracts / vitamins include sardines, sandalwood, valerian, oysters, kokuboku, senkyu, orange peel, orange peel, ginseng powder, carrots, keihi, peonies, mint leaves, oxon, sanshin, bukuryo, dokukatsu, shobu, Sea bream, pine beetle, peony, jujube, ryuunou, saffron, abalone extract, chimpi, fennel, campi powder, chamomile, aloe, aloe vera, melissa, rosemary, maroni, western sawtooth grass, rice bran extract, onion extract and garlic extract, arnica, Vitamins A, B, C, D, E, F, K and the like can be mentioned.

  Examples of polysaccharides / proteins / amino acids / enzymes include starch, carrageenan, hydroxyethylcellulose, methylcellulose, chitin, chitosan and other polysaccharides, sodium carboxymethylcellulose, chondroitin sulfate, hyaluronic acid and other mucopolysaccharides, collagen, elastin, keratin, and hybroin. Casein and its derivatives, amino acids such as alanine, glycine, aspartic acid, glutamic acid and threonine, enzymes such as cellulase, protease and lipase, ceramide and nucleic acids (DNA, RNA) and the like.

  Examples of alcohols include ethanol, isopropyl alcohol, lauryl alcohol, cetyl alcohol, stearyl alcohol, (iso) stearyl alcohol, oleyl alcohol, cholesterol and the like.

  As a fragrance, various essential oils such as jasmine, camomil, neroli, sea bream, lemon, perpena, citronella, kayapte, salpia, thyme, rosemary, hyssop, pagele, perilla, marjoram, laurel, juniper berry, nutmeg, ginger, onion, Garlic, Bergamot, Clary Sage, Peppermint, Jasmine, Petit Glen, Nuts Meg, Cinnamon, Cloves, Mace, Orange, Camphor, Artemisia, Salvia, Sandalwood Oil, Costas Oil, Labdanum Oil, Formic Acid, Acetic Acid, Ethyl Formate, Propyl Formate, Acetic Acid Awakening fragrances such as esters, amyl nitrite, trimethylcyclohexanol, allyl sulfide, nonyl alcohol, decyl alcohol, phenylethyl alcohol, methyl carbonate, ethyl carbonate, etc. Hypnotic fragrance, phenyl acetate, guaiacol, indole, cresol, thiophenol, p-dichlorobenzene, p-methylquinoline, isoquinoline, pyridine, camphor, mercaptan, ammonia, hydrogen sulfide, etc. Mouthol, cineole, eugenol, citral, hydroxy as an appetite-enhancing fragrance such as estragole, elemol, anxiety and antidepressant such as citral, citronellal, borneol, linalool, geraniol, nerol, rosinol Citronellal, absynth oil acetic acid, amber, musk, α-pinene, limonene, methyl salicylate, terpene compounds and the like.

  As dyes / pigments / pigments, Red 106, Red 2, Yellow 4, Green 3, Blue 1, Blue 213, Orange 205, Yellow 202 1, Green 204, Blue 2 Ministry of Health and Welfare Ordinary Tar Dye Appendices I and II Dye, Chlorophyll, Riboflavin, Annat, Canthaxanthin, Crocin, Cochineal, Benibana, Natural dyes recognized as food additives such as anthraquinone, titanium oxide, zinc oxide, yellow Examples thereof include inorganic pigments such as iron oxide, red iron oxide (Bengara), black iron oxide, and ultramarine blue.

  The bathing agent of the present invention may be basic, but is preferably weakly acidic from the viewpoint of irritation to the skin, and particularly preferably pH 4-7. Further, the viscosity is preferably 20 to 8000 mPa · s, particularly 50 to 5000 mPa · s, more preferably 50 to 1000 mPa · s from the viewpoint of ease of charging and dispersibility.

  The liquid bathing agent of the present invention obtained as described above is used by being accommodated in a container such as a resin, plastic, glass, aluminum can or the like. The mouth of these containers (liquid bathing agent outlet) is, for example, a watering mouth to make it uniform when it is poured into bath water, or has a quantitative mechanism to release a certain amount. An extension hose or the like may be provided so that it can be poured into the bottom of the bathtub.

  As a bathing method, for example, a normal method in which the liquid bathing agent is mixed with bath water set to a temperature equal to or higher than the human body temperature in the bath and then bathed can be used without particular limitation.

  EXAMPLES The present invention will be described in more detail with reference to examples below, but these do not limit the present invention at all.

<Examples 1-3 and Comparative Examples 1-3>
A liquid bath agent was prepared with the composition (% by weight) shown in Table 1, and a sensory evaluation test for the moist feeling and rustiness was performed based on the following evaluation criteria. In addition, the lukewarm water after the test use was put in a bucket and left to check for the presence of dirt. The sensitivity evaluation results are shown in Tables 2-7.

(Sensory evaluation test)
The bathing agent 0.8 mL of Example 1 and Comparative Example 1 was dissolved in 8 L of lukewarm water (37 ± 2 ° C.). In the test subjects (four women and three men) who washed the forearms of both arms, one arm was the target product (Example or Comparative Examples 2 to 4), and the other arm was dissolved in the bath preparation of Comparative Example 1. It was immersed in hot water for 5 minutes, and then both arms were taken out of the hot water and towel-dried. Thereafter, the test subject touched the forearm with the fingertip after washing with water, and evaluated the feeling of use, the moist feeling of the skin, and the roughness in five levels from 3 (pretty good) to -1 (bad). The results are shown in Tables 2-7.

  Table 8 shows the results of evaluation as to which of the feelings of use was superior compared to the examples or comparative examples with reference to Comparative Example 1.

  The liquid bath containing the water-soluble polymer of the present invention and rice germ oil and / or mineral oil is a comparative liquid bath containing any one of water-soluble polymer and rice germ oil or mineral oil. Compared to the agent, it is excellent in preventing moistness and rustling from the beginning, and the feeling lasts for a long time. In particular, when the liquid bath of Example 3 containing a water-soluble polymer, rice germ oil, and mineral oil was used, the results were much better than those of the others. Similarly, the overall feeling of use of the examples is excellent.

  For example, when attention is paid to the moist feeling of the skin immediately after being immersed in lukewarm water containing a bath agent, any of Comparative Examples 2 to 4 each containing a water-soluble polymer, rice germ oil, and mineral oil in the bath agent. The score is only less than one. On the other hand, the score when using the bath agent of the example containing at least water-soluble polymer and further containing rice germ oil and / or mineral oil is 1.4 or more in each case, The value is higher than that predicted from the results when used alone. Further, this tendency is not limited to just after the immersion, but persists for a long time after the immersion. The same can be said about prevention of rustling.

  As a specific factor of the results of these sensory tests, it is conceivable that in the skin after being immersed in the lukewarm water containing the bathing agent of the present invention, the stratum corneum moisture content and skin blood flow persistence are excellent.

Claims (2)

Hydroxypropylmethylcellulose or one or more selected from hydrophobic hydroxypropyl methylcellulose and a liquid bath agent containing the rice germ oil and Mi Neraruoiru.   The liquid bath agent according to claim 1, wherein the rice germ oil is contained in an amount of 0.1% or more.