JP2006008567A - Bath agent composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bath agent composition which comprises a uniform dispersion of orange oil in an aqueous medium, enables efficient bathing by quickly and uniformly dispersing in hot water to which it is added, brings mental stability to a bathing baby with its soft orange fragrance, is excellent in temporal stability in spite of being an aqueous emulsion, causes no separation of components after long-term storage, is excellent in moisturizing effect derived from ceramide contained as an ingredient, is slightly acidic and is therefore gentle to the skin and suitable for bathing babies with sensitive skin. <P>SOLUTION: In the bath agent composition, the orange oil is uniformly dispersed in the aqueous medium. The bath agent composition contains 30-980 pts.wt. water against 1 pt.wt. orange oil. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bath salt composition. More specifically, the present invention relates to a liquid bath salt composition in which orange oil is uniformly dispersed in an aqueous medium.

According to Kojien (2nd edition, published on September 25, 1975, Iwanami Shoten), “bath bath” means “wash your hair, cleanse your body with hot water. "Bathing" means "entering the bath. Yuami." “Yuami” is said to “warm and wash your body in hot water”.

  In general, when bathing, in order to enhance the warming effect by promoting blood circulation, the heat retaining effect after bathing and the moisturizing effect, the bathing agent is dissolved or dispersed in hot water in a bath and immersed in the bath. In this case, since the hair and body are washed separately, the bath salt usually has no cleaning effect on the hair and skin.

  On the other hand, bathing is usually performed for infants such as newborns who do not have enough physical strength to bathe, and hot water is poured into a container such as a baby bath, and the bathing fee is dissolved or dispersed therein. Soak the resulting solution or dispersion in gauze, etc., or wipe the hair and skin, or use soap to clean the hair and skin in advance, and then rinse with hot water in the container to clean the hair and skin. It is implemented for the purpose. However, in the latter case, rinsing such as hot water is necessary, and further, soap remaining due to the rinsing residue causes skin disorders such as rashes in infants with sensitive skin (including newborns). As a result, the use of bathing baths, which do not require rinsing and do not pose the risk of such skin damage, has become the mainstream.

  Therefore, “bathing agent (also referred to as bathing agent)” and “bath bathing agent” are clearly distinguished by whether or not they have a cleaning effect on hair and skin.

  In addition, when bathing, it is desirable to end it as quickly as possible in order to reduce the physical burden on the infant. It is preferable to be able to give comfort without giving such an excessive mental burden to the infant.

  In recent years, according to the researches of the inventors, the newborn babies 2 to 3 days after birth are sniffed with various fragrances (each mother's milk, artificial milk, freshly squeezed orange juice, distilled water) and the electroencephalogram at that time As a result, it was found that when sniffing freshly squeezed orange juice, it is superior to artificial milk, shows almost the same level of comfort as breast milk, and is in a calm state (Non-patent Document 1) reference). Therefore, if the scent of freshly squeezed orange juice can be imparted to the bathing fee, it is considered that the baby can quickly perform bathing in a mentally stable state.

  Freshly squeezed orange juice is thought to contain some orange peel-derived components mainly from orange juice, but among these, the fragrance peculiar to orange is mainly composed of volatile components. It is presumed to be an essential oil called orange oil.

On the other hand, Patent Document 1 discloses cosmetics for use in irritated and cucumbers containing at least one selected from (1) pinene and (2) citral, citronellol, and 1,8-cineole. Lemon essential oil is mentioned as one containing (1) and (2). However, the cosmetics are intended for adults and do not describe any effects on infants, especially psychological effects during bathing. Furthermore, in the examples, the composition of the lemon essential oil (citronelar 21% by weight, citral 25% by weight, pinene 11% by weight) is described, which is greatly different from orange oil (main component is d-limonene). Yes.

  Orange oil is generally known as a natural fragrance. For example, Patent Document 2 discloses a bath agent composition containing citrus seed oil, and orange oil is exemplified as an example of a natural fragrance that may be contained therein.

  However, orange oil is less dispersible in water than other essential oils, and it is extremely difficult to disperse in an aqueous medium by adding a surfactant, and even if it is dispersed, Even though the dispersion stability is low and it seems to be dispersed in an aqueous medium temporarily, it is separated over time, and it is very difficult to maintain the dispersion state stably for a long time.

  The above Patent Document 2 does not show an example in which orange oil is actually used as a natural fragrance, and furthermore, the dosage form of the bath composition is mainly a powder, and dispersion stability of orange oil in an aqueous medium is not shown. There is no mention of sex.

It is desirable that bathing baths, particularly bathing baths for infants with sensitive skin, contain appropriate moisturizing ingredients for moisturizing the hair and skin after cleaning. Patent Document 3 discloses a cosmetic composition in which ceramide is blended as a moisturizing component, and examples of the cosmetic composition include bath oil.
Michiyuki Yoshida et al., Evaluation of Comfortability against New-born Baby's Odor by EEG (2001 48th Annual Meeting of Japanese Society for Pediatrics, p. 672-673) JP 2001-233723 A Japanese Patent No. 2917347 Japanese Patent Publication No. 6-57651

  An object of the present invention is to provide a liquid bath salt composition in which orange oil is uniformly dispersed in an aqueous medium.

  That is, the bath salt composition of the present invention is characterized in that orange oil is uniformly dispersed in an aqueous medium.

  It is preferable that water is contained in the bath material composition in an amount of 30 to 980 parts by weight with respect to 1 part by weight of orange oil.

  Moreover, it is preferable that the bath salt composition contains polyoxyethylene oleyl ether having an ethylene oxide addition mole number of 2 to 50.

  Furthermore, the bath salt composition preferably contains ceramide, more preferably polyoxyethylene glyceryl isostearate having an ethylene oxide addition mole number of 10 to 60.

  As for the said bath-bath composition, it is desirable that the pH exists in the range of 4-7.

  Moreover, it is preferable that the bath salt composition of this invention is a bath bath composition for infants including a newborn.

  Since the bath oil composition of the present invention has orange oil uniformly dispersed in an aqueous medium, it can be quickly and uniformly dispersed even when added to hot water, enabling efficient bathing, The scent can bathe the infant in a mentally stable state. Furthermore, since the bathing composition of the present invention is in the form of an aqueous emulsion and is excellent in stability over time, no separation of components is observed even when stored for a long period of time.

  In addition, since ceramide is blended, the moisturizing effect is excellent, and it is weakly acidic, gentle to the skin, and suitable for bathing infants with sensitive skin.

  Hereinafter, the present invention will be specifically described.

  The bath salt composition of the present invention is characterized in that orange oil is uniformly dispersed in an aqueous medium.

  According to the Japanese Pharmacopoeia, orange oil is defined as “essential oil obtained by squeezing a kind of peel for edible use of Citrus species (Rutaceae)”. In this specification, orange oil is similar to this, but specifically, it is an essential oil obtained by pressing or steam-distilling the skin and fruit of the kind used for food of the Rutaceae citrus subfamily Citrus genus (Citrus). And from the point of quality, what was obtained by pressing is more preferable. In addition, about the seed, although it may be contained if it is a small amount seeing from the whole raw material in the case of pressing, it is preferable that it is removed. That is, the orange oil used in the present invention is clearly different from the seed oil derived from citrus seeds described in Patent Document 1.

  Specific examples of the mandarin plant that can be used as a raw material for the orange oil include orange, mandarin orange, grapefruit, tongue, hassaku, yuzu, mandarin, and the like. Of these, orange is preferred. Here, the orange includes sweet orange (Citrus sinensis (L.) Osbeck) and bitter orange (Citrus aurantium L. subsp. Amara L.). The essential oil obtained from the former is sweet orange oil. The essential oil obtained from the latter is called bitter orange oil. In the present invention, sweet orange oil or bitter orange oil may be used alone as orange oil, or these may be mixed and used.

  The main component of orange oil is d-limonene, which is contained in an amount of about 90% by weight in the total amount of orange oil. In addition, it contains citral, pinene, decylaldehyde, etc., and has a unique flavor. This flavor is thought to achieve the effect of stabilizing the infant's mental state.

  Orange oil is known as a flavoring agent for preparations. When the preparation is a powder, it may be impregnated and absorbed in the powder. However, since the dispersibility in water is poor, dispersion in an aqueous medium is not possible. Compared with essential oils, it is extremely difficult, and even if it seems to be temporarily dispersed, it will be separated over time. In such a case, it cannot be said that orange oil is uniformly dispersed in the aqueous medium.

On the other hand, in this invention, this orange oil is usually 0.01-3 in a bath salt composition whole quantity.
The orange oil is contained in an amount of 0.1% to 0.5% by weight, and the orange oil is uniformly dispersed in the aqueous medium. That is, the orange oil is not temporarily dispersed in the aqueous medium, but is stably maintained after aging.

  In order to disperse the orange oil uniformly (and for a long period of time) in an aqueous medium, it is preferable to use a surfactant, and the selection thereof is important. In the present invention, it is desirable to use polyoxyethylene oleyl ether as the surfactant. Specifically, polyoxyethylene oleyl ether having an ethylene oxide addition mole number in the range of 2 to 50 is preferable, and polyoxyethylene oleyl ether in the range of 15 to 50 is more preferable.

  When polyoxyethylene oleyl ether with the number of moles of ethylene oxide added in the above range is used as a surfactant, orange oil can be uniformly dispersed in an aqueous medium alone or with other components such as ceramide described later. Even when stored for a long time, separation does not occur.

  The polyoxyethylene oleyl ether is usually 0.1 to 5 parts by weight, preferably 0.1 to 3 parts by weight, based on 1 part by weight of orange oil. Used for.

  Furthermore, it is preferable that the bath salt composition of the present invention contains ceramide from the viewpoint of improving the moisturizing effect.

  Ceramide is a compound present in the stratum corneum of living skin and plays an important role in constructing and maintaining a lipid barrier necessary for water retention in the living body. This ceramide is an amphiphilic substance and is a compound having a hydrophobic group and a hydrophilic group in the same molecule. In addition to natural ceramide contained in the skin stratum corneum of the living body, there are compounds similar to this natural ceramide, and these also construct and maintain the lipid barrier necessary for water retention in the living body, It is equally used as ceramide. In the present specification, the term “ceramide” is not particularly limited, and includes natural ceramide and similar compounds.

  Examples of the ceramide used in the present invention include natural ceramide, N- (hexadecyloxyhydroxypropyl) -N-hydroxyethylhexadecanamide, N-acyl sphingosine, N-acyl sphingosine-containing ceramide, N-acyl phytosphingosine. N-acylphytosphingosine-containing ceramide, sphingomyelin, phytosphingosine and other synthetic ceramides, ceramide-like compounds and the like.

  The ceramide is used in the bath salt composition of the present invention so as to have an amount of usually 0.01 to 5 parts by weight, preferably 0.01 to 1 part by weight with respect to 1 part by weight of orange oil.

  In the present invention, it is preferable to use polyoxyethylene glyceryl monoalkyl ester in order to disperse the ceramide uniformly and for a long period of time in an aqueous medium. Polyoxyethylene glyceryl monoalkyl ester is a compound obtained by addition polymerization of ethylene oxide to a free hydroxyl group of mono fatty acid glycerin.

  The polyoxyethylene glyceryl monoalkyl ester preferably has 18 alkyl groups in the monoalkyl moiety, and carboxylic acid having an alkyl group having 18 carbon atoms capable of forming an ester with glycerin includes stearic acid. And isostearic acid.

More specifically, it is preferable to use polyoxyethylene glyceryl isostearate as the polyoxyethylene glyceryl monoalkyl ester. More specifically, polyoxyethylene glyceryl isostearate having an ethylene oxide addition mole number in the range of 10 to 60 is preferable, and polyoxyethylene glyceryl isostearate in the range of 15 to 60 is more preferable.

  When polyoxyethylene glyceryl isostearate having an ethylene oxide addition mole number within the above range is used, it is possible to disperse ceramide uniformly and for a long time in an aqueous medium, and also adversely affect the dispersion stability of orange oil. Therefore, the dispersion state of both orange oil and ceramide in the aqueous medium can be stably maintained.

  The polyoxyethylene glyceryl monoalkyl ester is usually used in an amount of 5 to 100 parts by weight, preferably 10 to 50 parts by weight, based on 1 part by weight of ceramide.

  Furthermore, the bathing composition of the present invention may contain other oily base materials from the viewpoint of moisturizing hair and skin and supplying oil. Such an oily base is not particularly limited as long as it does not impair the object of the present invention, and the oily properties described in cosmetic raw material standards, cosmetic blending raw material standards, Japanese pharmacopoeia, food additive official regulations, etc. A substrate can be used as appropriate.

  Specifically, for example, mineral oils such as liquid paraffin; natural animal and plant oils such as squalane, avocado oil, rosehip oil, olive oil, camellia oil, sesame oil, sunflower oil, sweet almond oil, jojoba oil; caprylic acid, capric acid , Diglycerin esters or triglycerin esters (mono- or mixed glycerides) of fatty acids such as myristic acid, oleic acid, and isostearic acid. These can be used alone or in combination. Among these, liquid paraffin and squalane can be preferably mentioned.

  Surfactants for dispersing these other oily base materials in an aqueous medium are not particularly limited, and are generally described in cosmetic raw material standards, cosmetic compounding raw material standards, Japanese pharmacopoeia, food additive official regulations, etc. Anionic anionic surfactants, nonionic surfactants, and amphoteric surfactants can be widely exemplified.

  Of these, when liquid paraffin is used as the oily base, it is usually a nonionic surfactant, preferably polyoxyethylene alkyl ether, more preferably a polyoxyethylene alkyl having 16 to 18 carbon atoms in the alkyl group. It is desirable to use ether, more preferably polyoxyethylene stearyl ether, polyoxyethylene cetyl ether. These can be used alone or in combination.

  When squalane is used as the oily base, it is usually an amphoteric surfactant, preferably a sorbitan fatty acid ester, more preferably a sorbitan fatty acid ester having a fatty acid-derived portion of 16 to 18 carbon atoms, more preferably monostearic acid. It is desirable to use sorbitan or sorbitan monopalmitate. These can be used alone or in combination.

  Furthermore, at the time of dispersion, higher alcohols having 16 to 18 carbon atoms such as cetyl alcohol, oleyl alcohol, octadecyl alcohol, stearyl alcohol, and mixtures thereof may be used as a dispersion aid.

  Such other oily base materials and surfactants and dispersion aids used for dispersion of the oily base materials can be used in amounts that do not impair the purpose of the present invention. These can be used in a total amount of 0.1 to 10 parts by weight, preferably 1 to 5 parts by weight, so as to be contained in the bathing composition of the present invention.

  As described above, since the bath oil composition of the present invention is obtained by uniformly dispersing orange oil in an aqueous medium, water is usually contained as a medium. Although it does not specifically limit as water, For example, what becomes drinkable, such as purified water, distilled water, deionized water, natural spring water, city water, is preferably used from a viewpoint of safety. Water is usually used in an amount of 30 to 980 parts by weight, preferably 300 to 900 parts by weight with respect to 1 part by weight of orange oil.

  In addition, a preservative, a natural extract derived from animals and plants, a pH adjuster, a pigment, and the like may be appropriately added as other components other than those described above to the bath salt composition of the present invention.

  Examples of the preservative include methyl paraoxybenzoate, propyl paraoxybenzoate, isopropyl paraoxybenzoate, butyl paraoxybenzoate, sodium benzoate, and phenoxyethanol. Of these, sodium benzoate and phenoxyethanol are preferred.

  Examples of natural extracts derived from animals and plants include disodium glycyrrhizinate, dipotassium glycyrrhizinate, placenta extract, Melissa extract, horsetail extract, aloe extract and the like.

  Examples of the pH adjuster include citric acid, sodium citrate, sodium hydroxide, potassium hydroxide, lactic acid and the like.

  As the coloring matter, natural coloring agents and artificial coloring agents known as food coloring agents can be used, but are not limited thereto.

  The bath salt composition of the present invention can be prepared by mixing and dispersing the above-described components according to a conventional method.

  For example, as an example, dispersion 1 prepared by dispersing ceramide in an aqueous medium under heating with polyoxyethylene glyceryl isostearate, orange oil and polyoxyethylene oleyl ether prepared separately A dispersion 2 is prepared by mixing the solution 1 with Thereafter, by separately adding the dispersion 3 (prepared by dispersing the above-mentioned other oily base material in an aqueous medium using a surfactant) to the dispersion 2, stirring and mixing the mixture sufficiently, and cooling. It can be obtained as a milky emulsion. In addition, when adding the solution 1 containing orange oil to the dispersion liquid 1, it is preferable to carry out after the temperature of the dispersion liquid 1 shall be 55 degrees C or less from a viewpoint of preventing the loss of the flavor component by volatilization.

  In addition, as for the bathing-bath composition of this invention, it is desirable that the pH is in the range of 4-7 normally, Preferably it is 4.5-6.5. When the pH of the bathing composition is within the above range, the skin surface irritation can be reduced because it is similar to the pH value of the skin surface.

  In addition, it is desirable that the bath salt composition has a viscosity measured with a B-type viscometer at 25 ° C. in the range of usually 1 to 100 mPa · s, preferably 5 to 50 mPa · s. When the bathing composition has a viscosity within the above range, when it is poured into hot water filled in a container such as a baby bath, it disperses more quickly, and the entire hot water without stirring the hot water. Therefore, it is possible to perform bathing more efficiently. Moreover, even when the stock solution is touched, there is a smooth touch and it is not sticky, so there is no discomfort when the stock solution is accidentally touched and it can be washed off immediately.

In addition, when the bathing composition is poured into hot water, the hot water becomes cloudy, so there is no misunderstanding about whether or not it is added.

  Furthermore, in the bathing composition, orange oil is uniformly dispersed in an aqueous medium, and the flavor component volatilizes during bathing, so that the mental state of the infant can be stabilized. It is preferably used as a bathing bath composition.

  EXAMPLES Hereinafter, although this invention is demonstrated further more concretely based on an Example, this invention is not limited to these Examples.

  In a vacuum kettle with a 500 kg capacity stirring blade (paddle, homogenizer), 2.50 kg of polyoxyethylene glyceryl isostearate (mole number of ethylene oxide = 40), 1.50 kg of sodium benzoate, purified water (78-82 ° C.) 230.00 kg was added, and N- (hexadecyloxyhydroxypropyl) -N-hydroxyethylhexadecanamide 0.05 kg was added with stirring while rotating the paddle at 83 to 87 ° C. and 20 rpm, and the above temperature range The stirring was continued for 10 minutes while maintaining the temperature, and the homogenizer was rotated at 500 rpm for 10 minutes to solubilize.

  Thereafter, the paddle is cooled to 60 ° C. while rotating at 20 rpm, and 2.50 kg of phenoxyethanol is added while maintaining this temperature and stirring is continued. Then, 0.05 kg of dipotassium glycyrrhizinate in a separate container (78-82 ° C.) The product was dissolved in 5.00 kg and added to the vacuum kettle, and the inside of the vessel was further washed with a small amount of purified water (78-82 ° C.) and added to the vacuum kettle.

  While continuing the stirring (20 rpm) in the paddle, it was cooled to 55 ° C., and in another container, 3.00 kg of polyoxyethylene oleyl ether (added mole number of ethylene oxide = 20) and 1.50 kg of orange oil were mixed. The obtained pale yellow opaque solution was added, and the inside of the container was further washed with a small amount of purified water (78 to 82 ° C.), and this was also added to the vacuum kettle.

  Next, while continuing stirring (20 rpm), the mixture was cooled to 45 ° C., cooled at 45 ° C. for 10 minutes, and then 250.00 kg of emulsion P separately prepared in another container was added. Washed with water (78-82 ° C.) and added to the vacuum kettle.

  Then, it cooled to 30 degreeC, continuing stirring (20 rpm), and obtained the emulsion bathing material composition.

  The total amount of purified water subjected to the co-washing was 3.90 kg.

  The separately prepared emulsion P is 50% by weight of purified water and the other components are as follows: liquid paraffin, polyoxyethylene stearyl ether, polyoxyethylene cetyl ether, squalane, sorbitan monostearate, mono Sorbitan palmitate, cetostearyl alcohol, sodium benzoate, citric acid.

  The viscosity of the bathing bath composition obtained (measured with a B-type viscometer at 25 ° C.) was 10 mPa · s, and the pH was 5.1.

  A part of the bathing composition was filled in a 250 ml polyethylene lidded container and sealed, and then stored at room temperature and 50 ° C. for 3 months. As a result of visual inspection after the storage period, no separation or precipitation of components such as orange oil was observed under any conditions.

  When 5 mL of this bathing composition is poured into a baby bath (capacity 20 L) with a temperature of 37-40 ° C. usually used for bathing, it quickly disperses in the hot water and diffuses throughout the hot water. And it was confirmed visually that the whole hot water was slightly cloudy. In addition, a faint orange fragrance derived from orange oil was also confirmed from this hot water.

[Comparative Example 1]
A bath salt composition was prepared in the same manner as in Example 1 except that polyoxyethylene behenyl ether (ethylene oxide addition mole number = 20) was used instead of polyoxyethylene oleyl ether (ethylene oxide addition mole number = 20). .

  The viscosity of the soaking bath composition obtained (measured with a B-type viscometer at 25 ° C.) was 8 mPa · s, and the pH was 5.3.

  A part of the bathing composition was filled in a 250 ml polyethylene lidded container and sealed, and then stored at room temperature and 50 ° C. for 3 months. As a result of visual inspection after the storage period, separation of components considered to be orange oil was observed under any conditions.

Claims (7)

  A bath salt composition characterized in that orange oil is uniformly dispersed in an aqueous medium.   The water bath composition according to claim 1, wherein water is contained in an amount of 30 to 980 parts by weight with respect to 1 part by weight of orange oil.   The bathing bath composition according to claim 1 or 2, wherein polyoxyethylene oleyl ether having an ethylene oxide addition mole number of 2 to 50 is contained.   The ceramide is contained, The bathing-bath composition in any one of Claims 1-3 characterized by the above-mentioned.   The bath salt composition according to claim 4, wherein polyoxyethylene glyceryl isostearate having an ethylene oxide addition mole number of 10 to 60 is contained.   The bathing composition according to any one of claims 1 to 5, wherein the pH is in the range of 4-7.   The bath composition according to any one of claims 1 to 6, which is for infants including newborns.