JPH0362691B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to bath additives, and more particularly to solid bath additives that moisturize the skin after bathing and provide a refreshing feel. [Prior art and its problems] Bathing has various effects such as cleaning the body, warming not only the limbs but also the body to the core, and relaxing the mind, and more than half of the people take a bath every day. On the other hand, bathing removes oil from the skin, and people with dry skin require some kind of treatment, and various skin care products are used. These problems have also been studied in bath salts, and oils and moisturizers have been added to them. However, when an oily component such as oil is added as much as possible to achieve its effect, there is a problem that the oil remains on the skin after coming out of the hot water, resulting in a characteristic stickiness that does not feel good to the touch. [Means for Solving the Problems] As a result of extensive research in order to solve the above problems, the present inventors have found that bath additives containing certain specific ingredients do not leave the skin feeling moisturized after bathing. The present invention was completed based on the discovery that it provides a crispy and crispy feeling without feeling sticky. That is, the present invention provides the following components: (1) an oily component; (2) a fine powder with a particle size of 3μ or less that is substantially insoluble in water and has a sedimentation ratio of 50% by weight or less after 24 hours in water; 3) 100-500% by weight of solid sugars based on oily components;
and (4) a water-soluble emulsifying/dispersing agent selected from the group consisting of gum agents, water-soluble proteins, water-soluble vinyl polymers, water-soluble polyalkylene glycols, anionic surfactants, and nonionic surfactants. It is intended to provide an agent for The oil in the oil component used in the bath additive of the present invention is insoluble or poorly soluble in water, is liquid or solid at room temperature, and when liquid is viscous and flammable, Examples include: Oils and fats: soybean oil, bran oil, jojoba oil, avocado oil, almond oil, olive oil, cacao butter, sesame oil, persik oil, castor oil, coconut oil, mink oil, beef tallow,
Natural fats and oils such as pork fat, hydrogenated oils obtained by hydrogenating these natural fats and oils, and synthetic triglycerides such as myristic acid glyceride and 2-ethylhexanoic acid glyceride. Waxes Carnauba wax, spermaceti wax, beeswax, lanolin, etc. Hydrocarbons Liquid paraffin, petrolatum, paraffin, microcrystalline wax, ceresin, squalane, pristane, etc. Higher fatty acids lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid, lanolic acid, isostearic acid, etc. Higher alcohols lauryl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, lanolin alcohol, cholesterol, 2-hexyldecanol, etc. Esters Myristyl lactate, cetyl lactate, isopropyl myristate, myristyl myristate, isopropyl palmitate, isopropyl adipate, butyl stearate, decyl oleate, etc. Silicone Oil The fine powder used in the present invention must be substantially insoluble in water, have a sedimentation ratio of 50% by weight or less after 24 hours in water, and have a particle size of 3 microns or less. be. If the sedimentation ratio after 24 hours in water is 50% by weight or more, the fine powder will settle to the bottom of the bathtub, causing not only a rough feeling when taking a bath, but also failure to obtain the desired effect. The sedimentation ratio of the fine powder after 24 hours in water is more preferably 30% by weight or less. Also,
Even if the particle size is 3 microns or more, the powder will still settle to the bottom of the bathtub, giving a rough feeling when taking a bath, and the desired effect will not be obtained. There are no particular restrictions on fine powders that meet these conditions, but such fine powders are preferably selected from those generally referred to as cosmetic powders, such as acrylic resins, styrene resins, epoxy resins, etc. Resin, nylon, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate resin, polytetrafluoroethane, copolymers of these polymers, silicic acid, calcium silicate,
Examples include natural silicic acid, aluminum, synthetic aluminum silicate, zeolite, titanium oxide, talc, kaolin, mica, and bentonite. The true specific gravity of the fine powder is preferably close to 1, and it is better to bring the true specific gravity close to 1 by combining, melting, or surface treating powders with light and heavy true specific gravity. In addition, the sedimentation ratio in the present invention is
It was calculated by dispersing 0.5 grams of the sample in a No. 6 Uchena colorimeter tube filled with water to a height of 30 cm, and then measuring the dry weight of the sample after it had settled completely after 24 hours. In the present invention, the solid saccharide is used to make the bath additive of the present invention in a solid form, and includes, for example, dextrin, cyclodextrin, sorbitol, saccharide, glucose, maltose, fructose, starch, and lactose. Among these, dextrin and cyclodextrin are particularly preferred. Water-soluble emulsifying/dispersing agents are used to emulsify or disperse oily components, and include the following. Gum agents: gum arabic, xanthan gum, gum tragacanth, etc. Water-soluble proteins: sodium caseinate, milk protein, gelatin,
Egg protein, soy protein, whey protein, etc. Water-soluble vinyl polymer: Water-soluble polyalkylene glycol: Polyethylene glycol, etc. Anionic surfactants: alkylbenzene sulfonates, higher alcohol sulfate ester salts, etc. Nonionic surfactants: polyoxyalkylene alkyl phenyl ethers, polyoxyalkylene adducts of higher alcohols or higher fatty acids, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene-polyoxypropylene condensates, etc. . Among these emulsifying/dispersing agents, gums such as gum arabic and xanthan gum, water-soluble proteins such as sodium caseinate and whey protein, and water-soluble polyethylene glycol are preferred. The bath additives of the present invention can be prepared, for example, by the method of the present invention, including oily components, solid sugars, gums, water-soluble proteins, water-soluble vinyl polymers, water-soluble polyalkylene glycols, anionic surfactants, and nonionic surfactants. A powder obtained by spray-drying or freeze-drying an oil-in-water emulsion containing a water-soluble emulsifying/dispersing agent selected from the group consisting of active agents;
It is produced by mixing fine powder with a particle size of 3μ or less that is substantially insoluble in water and has a sedimentation ratio of 50% by weight or less after 24 hours in water. The amount of fine powder, solid saccharide, and water-soluble emulsifying/dispersing agent is not particularly limited;
Preferably, the fine powder is 10 to 500% by weight, the solid sugar is 100 to 500% by weight, and the water-soluble emulsifying/dispersing agent is 5 to 100% by weight. The bath additives of the present invention may further contain the following conventionally known raw materials for bath additives that are commonly used as bath additives, but are not limited to those exemplified. (a) Inorganic salts Sodium chloride, sodium hydrogen carbonate, sodium carbonate, borax, sodium sulfate, sodium sulfide, sodium sesquicarbonate, sodium nitrate, sodium thiosulfate, sodium polyphosphate, sodium phosphate, calcium oxide, magnesium oxide, carbonate Calcium, magnesium carbonate, potassium chloride, potassium sulfide, etc. (a) Inorganic acids Boric acid, metasilicic acid, silicic anhydride, etc. (c) Organic acids succinic acid, fumaric acid, malic acid, tartaric acid, citric acid, benzoic acid, etc. (d) Herbal medicines: fenugreek, chamomile, cinnamon, safflower, peony, peonies, iris, senkiyu,
Japanese spruce, chimpi, soju yutsu, valerian, bean sprout, spruce, thin cargo, bukuriyo, ginseng, etc. (e) Pigments Tar pigments specified by Ordinance of the Ministry of Health and Welfare such as (1) of Yellow No. 4, Blue No. 1, and Yellow No. 202, chlorophyll, riboflavin,
Natural pigments that are approved as food additives, such as crocin, safflower, and anthraquinone. (f) Vitamins Vitamin A, vitamin C, vitamin D, vitamin E, etc. (G) Fragrances (H) Others Sulfur, hot water, mineral sand, mica powder, neutral clay, rice bran, fungicides, and other ingredients necessary for formulation. The bath additives of the present invention can be made into any conventionally known dosage forms such as powders, pellets, tablets, etc. that are commonly used as bath additives. It is generally preferable to add these to the bath water so that the oily component is 10 to 500 ppm, particularly 20 to 100 ppm. [Effects of the Invention] In the bath additive of the present invention, the oil dispersed in the bath water adheres to the skin, replenishing the oil content on the skin and making the skin firm after bathing. It can suppress stickiness and provide a refreshing feel. [Example] Examples and comparative examples of the present invention will be shown below to specifically clarify the effects of the present invention. Example 1 200 parts by weight of water was added to 18 parts by weight of liquid paraffin, 2 parts by weight of squalane, 10 parts by weight of gum arabic, and 40 parts by weight of dextrin, emulsified by a conventional method, and then spray-dried to form a powder. I got it. To this powder, add 10 parts by weight of acrylic resin ⁽¹⁾ , 10 parts by weight of sodium sulfate, and trace amounts of pigments and fragrances and mix uniformly to make a bath additive with a single use amount of 30 grams. (1) Acrylic resin: Sedimentation amount after 24 hours 12%, average particle size 0.4 microns, maximum particle size 1 micron or less Comparative example 1 20 parts by weight of liquid paraffin, 4 parts by weight of polyoxyethylene stearyl ether, trace amounts of dyes and fragrances,
After adding 200 parts by weight of water to 40 parts by weight of dextrin and emulsifying it by a conventional method, this is spray-dried to obtain a powder, which is used as a bath additive with a single use amount of 30 grams. Comparative Example 2 After adding 200 parts by weight of water to 20 parts by weight of liquid paraffin, 4 parts by weight of polyoxyethylene stearyl ether, 20 parts by weight of titanium oxide ⁽²⁾ , a trace amount of coloring matter/flavor, and 40 parts by weight of dextrin, and emulsifying in a conventional manner. ,
This is spray-dried to obtain a powder, which is used as a bath additive with a single use amount of 30 grams. (2) Titanium oxide: 95% sedimentation amount after 24 hours, average particle size 0.4 microns, maximum particle size 1 micron or less Comparative example 3 20 parts by weight of liquid paraffin, 4 parts by weight of polyoxyethylene stearyl ether, and 200 parts by weight of water. In addition, the mixture was emulsified by a conventional method and then spray-dried to obtain a powder. To this powder, 10 parts by weight of zeolite ⁽³⁾ , 10 parts by weight of sodium sulfate,
Add a small amount of coloring matter and fragrance and mix evenly to make a bath salt with a single use amount of 30 grams. (3) Zeolite: 99% sedimentation amount after 24 hours, average particle size 0.4 microns Bath additives of Example 1 and Comparative Examples 1 to 3 were prepared,
Each bath salt was used by 20 panelists in the usual manner for 10 days, and their overall evaluation as a bath salt (overall feeling of use) and the moisturized and refreshing feeling of the skin after taking a bath were evaluated. The results are shown in Table 1.

[Table] The bath additive of the present invention moisturizes the skin after bathing,
Moreover, it is an excellent bathing agent that gives a refreshing feel and is preferred by those who prefer the condition of hot water. Example 2 200 parts by weight of water was added to 10 parts by weight of liquid paraffin, 8 parts by weight of squalane, 10 parts by weight of gum arabic, and 35 parts by weight of dextrin, emulsified by a conventional method, and then spray-dried to form a powder. I got it. To this powder, add 10 parts by weight of acrylic resin ⁽¹⁾ , 15 parts by weight of sodium sulfate, and trace amounts of pigments and fragrances and mix uniformly to make a bath additive with a single use amount of 30 grams. Example 3 200 parts by weight of water was added to 2 parts by weight of cetanol, 18 parts by weight of liquid paraffin, 5 parts by weight of glyceride monostearate, 2 parts by weight of sodium caseinate, and 40 parts by weight of dextrin, and the mixture was emulsified by a conventional method.
This was spray dried to obtain a powder. To this powder, add 10 parts by weight of acrylic resin ⁽¹⁾ , 20 parts by weight of sodium bicarbonate, and a small amount of coloring matter/flavor, mix uniformly, and then dry granulate to obtain pellets. It was used as a drug. Example 4 5 parts by weight DIA (diisopropyl adipate),
20 parts by weight of water were added to 15 parts by weight of liquid paraffin, 2 parts by weight of whey protein, and 40 parts by weight of dextrin, and the mixture was emulsified by a conventional method, and then spray-dried to obtain a powder. To this powder, add 10 parts by weight of acrylic resin ⁽¹⁾ , 10 parts by weight of sodium hydrogen carbonate, 5 parts by weight of sodium carbonate, 15 parts by weight of succinic acid, 0.5 parts by weight of polyethylene glycol 6000, and trace amounts of coloring matter and fragrance, and mix uniformly. , tablet, 1
Obtained 50 grams of tablets. The tablets were packaged in an aluminum bag and used as a bath additive. Example 5 200 parts by weight of water was added to 10 parts by weight of liquid paraffin, 8 parts by weight of squalane, 10 parts by weight of gum arabic, 10 parts by weight of acrylic resin ⁽¹⁾ and 35 parts by weight of dextrin, and the mixture was emulsified by a conventional method. A powder was obtained by spray drying. To this powder, add 15 parts by weight of sodium sulfate and trace amounts of pigments and fragrances and mix uniformly to make a bath additive with a single use amount of 25 grams.

Claims (1)

[Scope of Claims] 1. The following components (1) an oily component; (2) a fine powder with a particle size of 3 μm or less that is substantially insoluble in water and has a sedimentation ratio of 50% by weight or less after 24 hours in water; 3) 100-500% by weight of solid sugars based on oily components;
and (4) a water-soluble emulsifying/dispersing agent selected from the group consisting of gum agents, water-soluble proteins, water-soluble vinyl polymers, water-soluble polyalkylene glycols, anionic surfactants, and nonionic surfactants. agent. 2 Oily components, solid sugars, and water-soluble emulsifying/dispersing agents selected from the group consisting of gum agents, water-soluble proteins, water-soluble vinyl polymers, water-soluble polyalkylene glycols, anionic surfactants, and nonionic surfactants. Powder obtained by spray-drying or freeze-drying an oil-in-water emulsion containing A method for producing a bath additive, which comprises mixing the following.