JPH0317013A - Bathing agent - Google Patents

Abstract

PURPOSE:To provide a convenient and economical bathing agent containing propylene carbonate as an active component, exhibiting excellent body-warming effect and resistant to aging. CONSTITUTION:The objective agent is produced by using propylene carbonate as a main component and, as necessary, properly compounding with vegetable essential oil (e.g. eucalyptus oil), natural or synthetic perfume (e.g. citronellol or linalyl acetate), extract of vegetable component (e.g. orange peel or lavender), colorant, etc. Propylene carbonate is a carbonic acid ester of propylene glycol and synthesized from propylene oxide and carbon dioxide gas. It gives propylene glycol and carbon dioxide gas by hydrolysis. The concentration of propylene carbonate in bath water is 0.005-0.01% and the compound is transcutaneously absorbed and gives excellent body-warming effect at the concentration.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bath additive characterized by containing brobylene carbonate (propylene carbonate, hereinafter abbreviated as PC) as an active ingredient. [Prior art and problems] Bath salts are external preparations, and the products can be classified into four types: powder, liquid, tablets, and dried plant powder. The powder type is the most consumed in general households.In the past, this type mainly contained sulfur salt, borax, phosphates, etc., but recently sodium bicarbonate has become the main component. Contains a high ratio. Although these products can reproduce the water quality of natural hot springs, the water quality of natural hot springs is not necessarily ideal for daily use at home, because weakly alkaline bath salts can cause stiff shoulders, neuralgia, sensitivity to cold, and fatigue. Although it has excellent recovery effects, it has the disadvantage that it is highly irritating to the skin of infants and children, and can easily cause skin irritation in people with skin sensitivity.

The tablet type can maintain a slightly acidic ['H value of around 6] at the concentration used, so its dermatological safety can be highly evaluated, but the drawback is that the carbon dioxide effect tends to decrease over time. Therefore, in households where many people take baths, several tablets are required. A product that has been used in liquid form for a long time is polysulfide potassium trisium. This product has excellent efficacy in treating skin diseases, but the drawback is that it generates a trace amount of toxic hydrogen sulfide gas, which can darken the bathtub and easily cause blackening and corrosion of metals such as faucets and pulp. have. The liquid type is a very unique product that uses crude drug extracts and essential oils as its active ingredients, but the drawback is that the thermal effect is slightly inferior to the powder type because it does not contain inorganic salts. Kizamibag is a natural herbal medicine that has been used for a long time and is a bath additive that matches the natural taste.
Wild plants are used, but the drawbacks are that they have a low thermal effect and it is troublesome to dispose of used bags. Sake bath is a liquid type that has a very strong thermal effect. This is not suitable for people who are hypersensitive to alcohol, and the desired effect will not be obtained unless a considerable amount of alcohol is added. [Means for Solving the Problems] In order to solve the above-mentioned problems, the present inventor conducted intensive research and found that PC has a very high thermal effect as a bath additive. The present invention was completed based on the discovery that the present invention has the following properties. That is, the present invention relates to a bath additive characterized by containing PC as an active ingredient.

[Effect]

PC is a carbonate ester of propylene glycol, which is synthesized from propylene oxide and carbon dioxide gas.

When hydrolyzed, it dissociates into propylene glycol and carbonic acid. The inventor has determined that this PC has a working concentration of 10-20 g/200
Q or o. It has been found that it can be absorbed transdermally at a low temperature of 0.01% to 0.01% and provides an excellent thermal effect.

PC is used as a raw material for cosmetics, and its specifications are stipulated by standards outside the standards for cosmetic raw materials.

PC's LD. is 29 g/Kg, indicating high biochemical safety.

Ethylene carbonate has similar effects, but is less safe than PC and is therefore unsuitable for household use.

[Structure of the invention]

When implementing the present invention, various product forms can be developed as detailed below. As a diluent for PC, propylene glycol, dipropylene glycol, polyethylene glycol, ethyl alcohol, glycerin, and, to a limited extent, water can be used. Various natural or synthetic pigments can be used as coloring agents. PC mixed with natural fragrances can be used not only as a general bath additive but also as aromatherapy for the purpose of beauty effects and treatment of various diseases. The essential oils that can be used are benzoin oil, ylang ylang oil, camille oil,
Clary sage oil, cypress oil, sandalwood night, cedarwood ura, jasmine oil, juniver oil, camphor oil,
Sage oil, geranium oil, thyme oil, frankincense oil, neroli oil, pine twenty-one dollar oil, basil oil, patchouli oil, rosea, hyssop extract, fennel oil, black biver oil, peppermint oil, bergamot oil, marjoram oil, Marie Examples include gold oil, melissa oil, myrrh oil, eucalyptus oil, lemongrass oil, and rosemary oil. These can be used alone or in combination.

For bath additives containing 13C as an effective ingredient, synthetic fragrances and semi-combined fragrances that are medically safe can be used. In general, compounds containing aldehydes are highly irritating to the skin, and there are many synthetic fragrances that are highly safe compared to ester-type compounds.

citronellol, citronellyl acetate, terpenyl lactate,
Methyl anthranilate, isoamyl isovalerate, ethyl isovalerate, undecalactone, ethylene brasylate, ethyl caprylate, ethyl cabroate, allyl caproate, 1,1-carvone, isoamyl formate, geraniol, geranyl acid , linalyl acetate, and isoamyl salicylate can be selected arbitrarily. 1) Bath additives containing C as an effective ingredient are divine Japanese and Chinese herbal medicines.
Western herbal medicines and extracts of wild flower necks can be combined. These are chimpi, spruce. l-Uki, Senkyu,
Camille, brown rice porridge, snail, peppermint, aloe, horsetail, horseradish, medicinal carrot, loquat, sagebrush, japonica, japonica, peony. It can be represented by extracts such as turmeric, peach, comfrey, rosemary, and lavender.

The bath salt based on the present invention further includes nutrients such as vitamin B2 and its derivatives, vitamin E, soybean lecithin, egg yolk lecithin, and egg yolk NL+, and fatliquoring agents such as olive oil, mink oil, jojoba oil, squalene, lanolin, and lanolin alcohol. Ma bodies etc. can be blended. Also, if necessary, protease, reverse, etc. can be added as an intoxicant. The pigments, nutrients, fatliquors, enzymes, etc. mentioned above can be arbitrarily selected without departing from the essence of the present invention.

〔Example〕

The present invention will be explained below with examples. ! However, the present invention is not limited to the examples.

Prepare the bath salts shown in Table 1 and add 15ml to 200ml.
Table 1 shows the results of adding Sotol II to 40°C hot water in a hot water bath and taking a bath. Table 2 shows the results of the evaluation after adding the product to 40°C hot water in a bathtub and then taking a bath.

Table-1 Group (ji) No. l No. 2 No. 3 No. 4 N
o. 5 Comparative Commercial Product - Tl Earth Agent Brobylene Carbonate Kokai. - Pinene eucalyptus extract 1 - Ronerol linalyl acetate lemon oil Δ bathing red Thermal effect (warmth) Skin feel 95 5 ◎ 0 95 5 ◎ 0 95 5 ◎ O 95 5 ◎ 0 95 5 ◎ 0 Refreshing feeling ◎ ◎ ◎ ◎ ◎ Powdered bath salts containing sodium bicarbonate as the main ingredient 25
g/ 200 liters used ◎ Δ ◎ Table-2 Composition (%) No. 6 No. 7 No. 8 No. 9 Main agent propylene carbonate group Fusarasato 2 Horsetail horsetail soybean bath Thermal effect (warmth) Skin feel 95 5 ◎ 0 95 5 ◎ O 95 5 ◎ O 95 5 ◎ ◎ Refreshing feeling○ ○ ◎ O Comparison No. 10 city version product table 2 95 5 ◎ 0 ◎ O O O Ne2 Touki. Liquid bath salts containing extracts of various herbal medicines such as Cucumber and several other herbal medicines, standard i9 usage amount: 1.0 ml/200 baths [Effects of the Invention] The bath salts of the present invention have superior thermal effects than conventional bath salts, and It has the advantage of being easy to handle, there is no risk of inhaling allergen powders, it does not irritate the hair roots even if you wash your hair with bath water, and there is no need to use hot water. are doing. Furthermore, it does not have the instability of pt+ due to changes over time, which is observed in bath additives containing sodium bicarbonate as the main ingredient, nor the decrease in thermal effect due to changes over time, which is observed with tablet-type products. It has been revealed that the bath additive according to the present invention has stable Pl1 and does not change over time, and is convenient and economical for repeated use and use by a large number of people.

Claims (3)

[Claims] (1) A bath additive characterized by containing propylene carbonate as an active ingredient. (2) A bath additive characterized by blending propylene carbonate with plant essential oils and natural or synthetic fragrances. (3) A bath additive characterized by blending a plant component extract with propylene carbonate.