WO2014141543A1 - Cosmetic for shower use, and cosmetic cartridge - Google Patents

Cosmetic for shower use, and cosmetic cartridge Download PDF

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Publication number
WO2014141543A1
WO2014141543A1 PCT/JP2013/082052 JP2013082052W WO2014141543A1 WO 2014141543 A1 WO2014141543 A1 WO 2014141543A1 JP 2013082052 W JP2013082052 W JP 2013082052W WO 2014141543 A1 WO2014141543 A1 WO 2014141543A1
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WO
WIPO (PCT)
Prior art keywords
cosmetic
shower
peg
cartridge
ppg
Prior art date
Application number
PCT/JP2013/082052
Other languages
French (fr)
Japanese (ja)
Inventor
松下 剛
Original Assignee
株式会社 Mtg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 Mtg filed Critical 株式会社 Mtg
Priority to CN201380074447.7A priority Critical patent/CN105142609B/en
Priority to JP2015505234A priority patent/JP6280911B2/en
Priority to KR1020157027815A priority patent/KR20150125717A/en
Publication of WO2014141543A1 publication Critical patent/WO2014141543A1/en
Priority to HK16106510.0A priority patent/HK1218508A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/10Washing or bathing preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0216Solid or semisolid forms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8129Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers or esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers, e.g. polyvinylmethylether
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/86Polyethers
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03CDOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02Plumbing installations for fresh water
    • E03C1/04Water-basin installations specially adapted to wash-basins or baths
    • E03C1/046Adding soap, disinfectant, or the like in the supply line or at the water outlet
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D2040/0093Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks storing soluble solid substances and suitable for application after adding a liquid solvent, e.g. water

Definitions

  • the present invention relates to a shower cosmetic and a cosmetic cartridge accommodated in a cosmetic cartridge that is detachably incorporated in a shower head.
  • cosmetic components such as oils, moisturizers, fragrances, bathing agents and the like are filled in a cosmetic cartridge of a shower device provided in a bathroom or a bathroom. These cosmetic components are eluted from the cosmetic cartridge into cold water or warm water and are sprayed from the shower head.
  • Cosmetic ingredients are usually filled in cosmetic cartridges as solids or powders, but are easy to dissolve in cold water or warm water, so they dissolve in cold water or warm water in a short time, and the solid form has no persistence. As a result, the effect is not sustainable. For this reason, the cosmetic ingredient must be frequently supplied to the cosmetic cartridge, which is complicated. Accordingly, there is a need for a cosmetic ingredient that is suppressed in solubility in cold water or warm water and has a solid form of durability.
  • This type of solid shower product is disclosed in Patent Document 1.
  • This solid shower product contains 30 to 95% by mass of polyethylene glycol together with one or more components selected from pigments, fragrances, bathing agents, cleaning agents and cosmetics.
  • Polyethylene glycol having an average molecular weight of 1000 to 6000 is preferably used.
  • polyethylene glycol is used as a component that suppresses solubility in water.
  • the polyethylene glycol has higher solubility in water than polypropylene glycol and the like.
  • the solubility in water is relatively high, and in particular, the solubility in warm water of 35 ° C. or higher is further enhanced. Therefore, as a solid shower product for a cosmetic cartridge, sustainability of the solid shape was insufficient.
  • the present invention has been made by paying attention to such problems existing in the prior art.
  • the purpose of the present invention is to provide a shower cosmetic that can secure a certain amount of elution with respect to cold water or hot water, while suppressing excessive solubility and obtaining sufficient sustainability of the solid shape. .
  • the shower cosmetic of the present invention contains a polyoxyethylene glycol (hereinafter referred to as PEG) / polyoxypropylene glycol (hereinafter referred to as PPG) copolymer as an essential component.
  • PEG polyoxyethylene glycol
  • PPG polyoxypropylene glycol
  • the shower cosmetic preferably contains polyvinyl alcohol (hereinafter referred to as PVA).
  • the cosmetic for shower includes a cosmetic.
  • the PEG / PPG copolymer, PVA or beauty agent is preferably uniformly dispersed and solid at normal temperature.
  • the mass ratio of PEG to PPG (PEG / PPG) in the PEG / PPG copolymer is preferably (150 to 200) / (35 to 70).
  • the PVA is preferably partially saponified PVA having a saponification degree of 86 to 90 mol%.
  • the content of the PVA is preferably 0.7 to 15% by mass.
  • the cosmetic cartridge accommodated in the shower head of the present invention has an inlet for taking in cold water or hot water, a water passage communicating with the inlet, a storage chamber for storing the cosmetic, and the storage chamber. And a cosmetic storage part having a communication part that allows cold water or hot water passing through the water flow path to enter and exit the storage chamber.
  • the shower cosmetics described in the above are stored.
  • a shower head It is an external view of a shower head, (a) is a front view, (b) is a right side view. It is sectional drawing of a shower head, Comprising: (a) is a longitudinal cross-sectional view of a grip part, (b) is a longitudinal cross-sectional view of the grip part cut
  • the shower cosmetic contains a PEG / PPG copolymer as an essential component.
  • This shower cosmetic agent preferably contains PVA, and more preferably contains a cosmetic agent. Further, the shower cosmetic may contain other components.
  • the PEG / PPG copolymer has a polyoxyethylene glycol (polyethylene glycol) unit and a polyoxypropylene glycol (polypropylene glycol) unit in the molecule, is a nonionic surfactant, and has a moisturizing effect.
  • PEG / PPG copolymer used in the cosmetic for shower those that are solid at room temperature are suitable.
  • the PEG unit constituting the PEG / PPG copolymer functions to increase the solubility of the shower cosmetic in water (cold water or hot water), and the PPG unit suppresses the solubility of the shower cosmetic in water. To function. Therefore, by having both of these PEG units and PPG units, the PEG units and the PPG units act synergistically to suppress the solubility of the cosmetic for shower in cold water and hot water, and to maintain elution sustainability. be able to.
  • the copolymerization ratio of PEG and PPG in the PEG / PPG copolymer is not particularly limited. Therefore, examples of the PEG / PPG copolymer include the following (numbers indicate mass ratio).
  • PEG / PPG (mass ratio) (150 to 200) / (35 to 70).
  • the freezing point of the copolymer having a PEG / PPG mass ratio of 150/35 is 52 ° C.
  • the freezing point of the copolymer having a PEG / PPG weight ratio of 200/70 is 55 ° C.
  • the molecular weight (degree of polymerization) of the PEG / PPG copolymer is increased, the elution rate of the shower cosmetic with respect to cold water or hot water can be suppressed and swelling can be suppressed. Since (smoothness) deteriorates, the molecular weight of the PEG / PPG copolymer is appropriately set in consideration of them.
  • PVA Since PVA has a large number of hydroxyl groups, it has a very strong hydrophilic property and is particularly soluble in hot water. Therefore, by adding PVA to the shower cosmetic, the solubility of the shower cosmetic particularly in warm water of 35 ° C. or higher can be enhanced.
  • This PVA is obtained by saponification reaction of polyvinyl acetate and is represented by the following general formula.
  • the polymerization degree of PVA is represented by m + n
  • the saponification degree is represented by m / (m + n).
  • the degree of saponification is preferably 86 to 90 mol%, the degree of polymerization. Is preferably 1800-2000.
  • the degree of saponification is less than 86 mol% or the degree of polymerization is less than 1800, the tendency for the cosmetic for shower to swell against cold water or hot water becomes unfavorable.
  • the degree of saponification is greater than 90 mol% or the degree of polymerization is greater than 2000, the solubility of the shower cosmetic in cold water or hot water is unfavorable.
  • Beauty agents include collagen, ceramide, placenta, various vitamins (vitamin C, vitamin E, etc.), natural fragrances, synthetic fragrances, formulated fragrances (fragrances, etc.), oils, moisturizers, fragrances, deodorants, antiperspirants, Examples thereof include pigments, preservatives, emulsifiers, amino acids and water.
  • the kind of beauty agent is not limited, You may use a well-known thing.
  • the beauty agent By containing the PEG / PPG copolymer and PVA, the beauty agent can be eluted over a long period of time without the beauty agent being unnecessarily eluted from the shower cosmetic.
  • additive components As other additive components, viscosity modifiers, excipients and the like are appropriately selected and used.
  • the PEG / PPG copolymer constituting the shower cosmetic agent is a main component of the shower cosmetic agent, and is preferably contained in an amount of 80 to 97% by mass in the shower cosmetic agent.
  • the content of the PEG / PPG copolymer is less than 80% by mass, it is difficult to obtain appropriate solubility of the cosmetic for shower in cold water or hot water, and it is difficult to obtain moisture retention.
  • the content of the PEG / PPG copolymer exceeds 97% by mass, the content of PVA and the cosmetic agent is relatively decreased, and an effect based on those components cannot be obtained, which is not preferable.
  • PVA is preferably contained in the shower cosmetic agent in an amount of 0.7 to 15% by mass, more preferably 3.5 to 15% by mass.
  • the content of PVA is less than 0.7% by mass, when the shower cosmetic agent is used, it tends to swell when it comes into contact with cold water or warm water, which is not preferable.
  • the content of PVA exceeds 15% by mass, the content of the PEG / PPG copolymer and the cosmetic agent becomes relatively small, and the effects of these components are not sufficiently exhibited, which is not preferable. .
  • the cosmetic agent is preferably contained in the shower cosmetic agent in an amount of 2 to 7% by mass.
  • the content of the cosmetic agent is less than 2% by mass, effects such as moisturizing property and fragrance as the cosmetic agent cannot be sufficiently exhibited.
  • the content of the beauty agent is more than 7% by mass, the content of the PEG / PPG copolymer or PVA is relatively small, and the function expression by these components is insufficient, and the cosmetic for shower It is not preferable.
  • the content is desirably 5% by mass or less in the shower cosmetic.
  • the content of the other additive components exceeds 5% by mass, the content of each component described above is lowered, and the original function of the cosmetic for shower cannot be expressed.
  • the above-mentioned shower cosmetic is stored in a cosmetic cartridge and is solid at normal temperature for easy management. That is, when the shower cosmetic is not used at the time of washing the body by the shower, it is preferably solid at room temperature in order to maintain its shape.
  • the PEG / PPG copolymer, PVA, and the cosmetic agent are uniformly dispersed because each component can be eluted evenly when it is eluted at the time of use.
  • the shower head 10 includes a head portion 11 and a grip portion 12.
  • the head unit 11 includes a switching unit 20 that is switched to communicate the water channel 70 in the grip unit 12 with one of the downstream channels 71 and 72 shown in FIGS. Is provided.
  • the flow paths 71 and 72 are merged on the downstream side of the switching unit 20.
  • the switching unit 20 includes a first operation member 45 and a second operation member 48.
  • a large number of water spray holes 16 are formed at the tip of the head portion 11.
  • the cartridge 50 is accommodated in the water channel 70 of the grip portion 12 in a replaceable manner.
  • a water passage gap 12 c is formed in the water passage 70 between the inner peripheral surface of the grip portion 12 and the outer peripheral surface of the cartridge 50.
  • the head portion 11 and the grip portion 12 are connected via a screwing portion 12d. By releasing the screwing, the upper portion of the water channel 70 is opened, and the cartridge 50 can be attached to and detached from the grip portion 12.
  • a plurality of raised portions 12 e are formed at the bottom of the downstream side of the water channel 70.
  • a plurality of raised portions 12 e are formed at the bottom of the downstream side of the water channel 70.
  • cold water and hot water are diffused into the water channel 70.
  • a plurality of positioning ribs 12 f that are engaged with the outer peripheral surface of the cartridge 50 and position the cartridge 50 at the center position of the water channel 70 are formed on the inner peripheral surface of the grip portion 12.
  • the cartridge 50 has a lid member 61.
  • the cartridge 50 includes a cartridge case 51 having a bottomed cylindrical shape.
  • a plurality of slits 51 a are formed in the bottom wall of the cartridge case 51.
  • a cylindrical valve chamber 51b communicating with the slit 51a is formed at the center of the bottom wall of the cartridge case 51.
  • the valve chamber 51b communicates with an inner pipe 53 described later through an opening 51c provided in the upper portion of the valve chamber 51b.
  • the opening 51c corresponds to an inflow port, and the inner pipe 53 corresponds to a water passage.
  • a duckbill valve 52 made of an elastic material such as rubber that functions as a check valve is disposed in the valve chamber 51b.
  • the tip 52b of the duckbill valve 52 is broken into two, and the tip 52b is elastically contacted.
  • a cylindrical inner tube 53 whose lower portion is integrated with the valve chamber 51b is disposed at the axial center portion of the cartridge case 51. Yes.
  • the inner pipe 53 is provided with a large number of communication holes 53c at a predetermined pitch in the circumferential direction and over the entire length in the length direction.
  • the communication hole 53c corresponds to a communication part.
  • a medicine container 54 is defined between the inner tube 53 and the valve chamber 51 b and the cartridge case 51.
  • a cylindrical outlet member 55 is fitted to the downstream end portion of the cartridge case 51, and an end portion of the inner pipe 53 is fitted therein, and the outlet member 55 and the inner pipe 53 are communicated with each other.
  • a water-soluble shower cosmetic 100 formed in a solid and substantially cylindrical shape is stored.
  • the storage space of the medicine container 54 corresponds to a storage room, and the medicine container 54 corresponds to a cosmetic agent storage part.
  • a space 101 is formed between the downstream end of the shower cosmetic 100 and the lower end of the outlet member 55 in the initial state where the shower cosmetic 100 is not dissolved.
  • a moisturizing agent containing a moisturizing component is used as the shower cosmetic 100.
  • the shower cosmetic 100 is dissolved by cold water or hot water introduced through the communication hole 53c of the inner tube 53 to generate a moisturizing liquid. Then, the moisturizing liquid flows out of the cartridge 50 through the outlet member 55.
  • a reticulated strainer 57 is disposed between the upper end portion of the inner pipe 53 and the outlet member 55 shown in FIG.
  • the strainer 57 is made of a wire mesh or the like, and a number of fine holes are formed in the strainer 57.
  • the strainer 57 keeps the particles separated from the solid drug 100 and flowing out from the communication hole 53c from flowing out to the head part 11 side.
  • the strainer 57 has an inverted cup shape as a whole, and bulges toward the downstream side of the shower cosmetic 100.
  • the user pushes in the second operation member 48 as shown in FIG.
  • the flow channel 71 on the water passage gap 12c side of the water channel 70 is opened, and the flow channel 72 on the inner tube 53 side is closed, so that cold water and hot water are It flows into the flow path 71 of the head part 11 through the water flow gap 12 c through the shower hose and is discharged from the water spray hole 16.
  • the duckbill valve 52 is not opened, and water does not flow into the inner pipe 53 of the cartridge 50.
  • the user presses the pressing portion 45a of the first operating member 45.
  • the flow path 72 is opened. Accordingly, the cold water or hot water not only flows from the water passage gap 12c to the flow path 71 but also opens the flow path 72 on the upstream side of the duckbill valve 52, and therefore, as shown in FIGS. 2 (a) and 2 (b).
  • the duckbill valve 52 is opened and flows into the inner pipe 53 of the cartridge 50.
  • the cold water or hot water that has flowed into the inner tube 53 flows into the medicine container 54 through the communication hole 53 c of the inner tube 53.
  • the cold water or hot water that has flowed into the medicine container 54 dissolves the medicine in the medicine container 54 and becomes a moisturizing liquid. Then, the moisturizing liquid flows out from the communication hole 53 c into the inner pipe 53 and flows into the flow path 72 from the outlet member 55 through the strainer 57.
  • the moisturizing liquid in the flow path 72 is mixed with cold water or warm water flowing in the flow path 71 from the water passage gap 12 c on the downstream side of the switching unit 20 to become a diluted moisturizing liquid. Then, the diluted moisturizing liquid is discharged from the sprinkling holes 16.
  • the hole is not formed in the wall of the valve chamber 51b, if the volume of the shower cosmetic 100 is reduced by dissolution, cold water and hot water that have entered the medicine container 54 through the communication hole 53c are reduced in volume. A turbulent flow is formed around the later shower cosmetic 100, and the shower cosmetic 100 after the volume reduction is lifted. For this reason, even if a hole is not formed in the wall of the valve chamber 51b, the shower cosmetic 100 is appropriately dissolved and flows out from the communication hole 53c.
  • a normal shower that does not include the moisturizing liquid and a shower that includes the moisturizing liquid can be obtained by the selection operation of the first and second operating members 45 and 48.
  • the inner diameter of the inner tube 53, the size and number of the openings of the communication hole 53c, the arrangement position, and the like are set so that a moisturizing liquid with an appropriate concentration can be obtained. If it does in this way, the cosmetics 100 for showers will be scraped off little by little by the cold water or warm water which flowed in the chemical
  • a space 101 is formed on the downstream side of the shower cosmetic 100, and an interval is formed between the upper end of the shower cosmetic 100 and the strainer 57.
  • the strainer 57 bulges downstream. It is formed in a shape. Therefore, a relatively large particle peeled from the shower cosmetic 100 moves so as to fluctuate due to the water flow on the upstream side of the strainer 57. For this reason, it can prevent that such a granular material adheres to the inside of the strainer 57, and a flow path is blocked.
  • the shower cosmetic 100 contains a PEG / PPG copolymer as an essential component, it can exhibit a certain solubility while suppressing its solubility in cold water or warm water. Moreover, since the shower cosmetic 100 contains PVA, the solubility in warm water is particularly enhanced. Furthermore, the moisturizing agent as a beauty agent can improve the moist feeling of the skin after taking a shower.
  • a humectant is used as the medicine stored in the cartridge 50.
  • the medicine contained in the cartridge 50 is not limited to this, but is a perfume, a slimming agent, other cosmetic additives such as whitening lotion, antiperspirant, acne, atopy, and a dermatological drug. May be.
  • medical agent was used, the shape and form of a chemical
  • a gel-like or particulate drug may be used.
  • the duck bill valve 52 is provided in the cartridge 50 so that the water does not flow into the cartridge 50 when only water is sprayed from the shower head 10.
  • the check valve that prevents water from flowing into the cartridge when only water is sprayed may have a configuration other than the duckbill valve 52. Further, when only water is sprayed, if the solution in which the medicine is dissolved in the cartridge 50 does not flow out, the water may flow into the cartridge 50.
  • the shower cosmetic of the present embodiment was configured to include a PEG / PPG copolymer as an essential component.
  • a PEG / PPG copolymer as an essential component.
  • the shower cosmetic was further configured to contain PVA.
  • the solubility of PVA in water varies depending on the temperature, and the solubility in hot water is higher than that in cold water. Therefore, the solubility of the entire cosmetic for shower with respect to cold water or hot water can be adjusted by adjusting the addition amount of PVA. Moreover, the swelling property of the cosmetic for shower can be suppressed by adding PVA.
  • the shower cosmetic is further configured to include a cosmetic agent. Therefore, effects such as moisturizing property, deodorizing property, antiperspirant property, antiseptic property and the like based on the beauty agent can be exhibited while maintaining appropriate solubility of the cosmetic for shower in cold water or hot water.
  • the PEG / PPG copolymer, the PVA, and the beauty agent were uniformly dispersed and solidified at room temperature. As a result, these components can be uniformly eluted during use.
  • the mass ratio of PEG to PPG in the PEG / PPG copolymer is (150 to 200) / (35 to 70). In this case, it is possible to improve the sustainability by suppressing the solubility of the cosmetic for shower in water and warm water.
  • the PVA is a partially saponified PVA having a saponification degree of 86 to 90 mol%.
  • the content of the PVA is 0.7 to 15% by mass. As a result, it is possible to reduce the possibility that the shower cosmetic agent swells when touched with cold water or hot water when the shower cosmetic agent is used.
  • a more preferable content of PVA is 1 to 13% by weight with reference to Example 11 and Examples 14 and 15.
  • a more preferred content of PVA is 3.5 to 7% by weight with reference to Examples 2, 9 and 10.
  • the cosmetic cartridge of this embodiment includes an opening 51c (inlet) for taking in cold water or hot water, an inner pipe 53 (water passage) communicating with the opening 51c, and a storage space (accommodating room) for storing the cosmetic. And a communication hole 53c (communication portion) through which the storage space and the inner pipe 53 (water passage) communicate with each other and cold water or hot water passing through the inner pipe 53 (water passage) can enter and exit the storage space.
  • a medicine container 54 drug container
  • the shower cosmetic 100 is housed in the medicine container 54.
  • the above-described shower cosmetic that can secure a certain amount of elution with respect to cold water or warm water and suppress excessive solubility and obtain sufficient sustainability of the solid shape is preferable.
  • Example 1 Example 1 and Comparative Examples 1 and 2
  • Example 1 the following cosmetic ingredients were mixed by the following production method to prepare a shower cosmetic.
  • the materials of the above sections a, b1, and b2 are put into a vacuum emulsification kettle, heated to 80 ° C. in a vacuum state while stirring with a paddle, and uniformly dissolved.
  • the heating temperature is 80 ° C. in this embodiment, it may be any temperature suitable for dissolution.
  • section c is put into the kettle, and while stirring with a paddle, it is heated to 80 ° C. in a vacuum state and kneaded until uniform.
  • the heating temperature is 80 ° C. in this embodiment, but may be any temperature suitable for uniform dispersion.
  • a predetermined temperature for example, about 65 ° C.
  • the material of the section d is added, and while stirring with the paddle, cooling is continued.
  • the take-out temperature is lower than the predetermined temperature, it is taken out and molded into a predetermined shape to obtain a shower cosmetic.
  • This shower cosmetic is solid at room temperature (for example, 25 ° C.).
  • the take-out temperature is not limited as long as it is easy to take out from the pot (in this embodiment, 65 ° C.).
  • the shape of the shower cosmetic is not limited as long as it can be stored in a cartridge loaded with the shower cosmetic.
  • an appropriate shape such as powder, granular shape, columnar shape, or cylindrical shape can be selected.
  • Comparative Example 1 instead of the PEG / PPG-150 / 35 copolymer in Example 1, the PEG / PPG-150 / 35 copolymer has substantially the same unit (block) as the PEG unit. PEG homopolymer was used.
  • the shape of the cosmetic agent in the example and the comparative example was each cylindrical.
  • Example 1 and Comparative Examples 1 and 2 The shower cosmetic of Example 1 and Comparative Examples 1 and 2 is filled in the cartridge 50 described above, and hot water of 35 ° C., 40 ° C. and 45 ° C. is supplied from the shower head at a flow rate of 9 L / min as follows.
  • Sprinkled with water That is, in one test cycle, warm water is passed for 1 minute, allowed to stand at room temperature for 1 hour, then warm water is passed for 15 minutes, dried at 40 ° C. for 8 hours, the mass of the cartridge 50 is measured, and the cartridge 50 is measured.
  • the weight loss (g) of the cosmetic agent was measured, and the elution concentration (ppm) was determined.
  • Example 1 the elution concentration of the shower cosmetic was able to be suppressed to a low concentration of 13.4 to 36.9 ppm regardless of the temperature of the hot water.
  • the elution concentration was as high as 41.3 ppm when the temperature of the hot water was 35 ° C., and the elution concentration increased to 89.2 ppm when the temperature was 45 ° C.
  • the elution concentration was 22.9 ppm when the temperature of hot water was 35 ° C., but the elution concentration rapidly increased to 80.3 ppm when the temperature was 40 ° C. When the temperature was 45 ° C., the elution concentration reached 112.3 ppm.
  • Example 1 there was no swelling due to water and good results were obtained for any of the bodily sensation during shower use, the moisturizing feeling after drying, and the solid shape sustainability.
  • PEG of Comparative Example 1 although the solid shape can be maintained, the elution concentration with respect to warm water cannot be adjusted, the slimy feeling during shower use is not obtained, and the moisturizing feeling after drying is weak.
  • PPG of Comparative Example 2 a slimy feeling during shower use was obtained, but the solid shape could not be maintained, and a moisturizing feeling after drying was not obtained.
  • the ingredients of the cosmetics for showers in Examples 2 to 5 were as follows.
  • Example 2 (A) PEG / PPG-150 / 35 copolymer 91.8% by mass (B1) The following three components total 1.7% by mass 1,2-octanediol, ethylhexylglycerin, Methyl paraoxybenzoate (b2) The following three components total 2.0% by mass Amino acids, collagen, water (c) PVA 3.5% by mass (D) Fragrance 1.0% by mass (Example 3) (A) PEG / PPG-150 / 35 copolymer 92.8% by mass (B1) The following three components total 1.7% by mass 1,2-octanediol, ethylhexylglycerin, Methyl paraoxybenzoate (b2) The following three components total 2.0% by mass Amino acids, collagen, water (c) PVA 2.5% by mass (D) Fragrance 1.0% by mass Example 4 (A) PEG / PPG-150 / 35 copolymer 93.8% by mass
  • Example 2 there was no swelling due to water in any of the bodily sensation during use of the shower, the moisturizing feeling after drying, and the solid shape sustainability, and good results were obtained as in Example 1.
  • Example 6 In Examples 6 to 8, shower cosmetics were prepared using only the PEG / PPG copolymer.
  • Example 6 only PEG / PPG-150 / 35 copolymer was used in Example 6, only PEG / PPG-200 / 70 copolymer was used in Example 7, and PEG / PPG-150 / 35 copolymer was used in Example 8.
  • a shower cosmetic was prepared using only a mixture of 50% by mass of a polymer and 50% by mass of a PEG / PPG-200 / 70 copolymer.
  • the elution concentration (ppm) was determined from the weight loss (g) of the shower cosmetic in the cartridge 50 in the same manner as in Example 1, and the results are shown in Table 3.
  • Example 6 Although the elution concentration of the cosmetic was slightly high at 45 ° C, it could be suppressed to a low concentration of 27.0 to 27.6 ppm at 35 ° C and 40 ° C. In Example 7, the elution concentration of the cosmetic agent could be suppressed to a low concentration of 5.6 to 10.7 ppm regardless of the temperature. Also in Example 8, regardless of the temperature, the elution concentration of the cosmetic agent could be suppressed to a sufficiently low concentration of 13.1 to 23.0 ppm.
  • Example 6 the body feeling (smooth feeling) during use of the shower, the moisturizing feeling after drying, and the solid shape sustainability were measured in the same manner as in Example 1. As a result, the experience during use was almost the same as in Example 1.
  • Example 9 to 13 shower cosmetics were prepared using a PEG / PPG copolymer and PVA and changing the PVA content.
  • Example 9 93% by mass of PEG / PPG-150 / 35 copolymer and 7% by mass of PVA were used, and in Example 10, 96.5% by mass of PEG / PPG-150 / 35 copolymer and PVA 3.5%.
  • Example 11 99% by mass of PEG / PPG-150 / 35 copolymer and 1% by mass of PVA were used, and in Example 12, PEG / PPG-150 / 35 copolymer was 99.5% by mass.
  • Example 13 a cosmetic for shower was prepared using 84% by mass of PEG / PPG-150 / 35 copolymer and 16% by mass of PVA.
  • the elution concentration (ppm) was determined from the reduction (g) of the shower cosmetic in the cartridge 50 in the same manner as in Example 1, and the results are shown in Table 4.
  • Example 12 the elution concentration of the cosmetic agent was 6.1 to 43.3 ppm, and only the PEG / PPG-150 / 35 copolymer was used. Compared to Example 6, the concentration could be suppressed to a low level. In Example 12, the elution concentration of the cosmetic agent was 22.1 to 51 ppm, and could not be suppressed to a sufficiently low concentration as compared with Example 6.
  • Example 9 the body feeling (smooth feeling) during use of the shower, the moisturizing feeling after drying, and the solid shape sustainability were measured in the same manner as in Example 1.
  • the feeling during use was almost the same as that in Example 6.
  • Example 12 the moisturizing feeling after use and the solid shape sustainability were improved as compared to Example 6, and in Example 13, the solid shape sustainability was improved as compared to Example 6.
  • the PVA blended in the shower cosmetic can enhance the solubility of the shower cosmetic in water, in particular the solubility in hot water, and the PVA content is preferably 0.7 to 15 mass. %.
  • Example 14 and 15 In Examples 14 and 15, a shower cosmetic was prepared using a PEG / PPG copolymer, PVA, and a cosmetic agent.
  • Example 14 a shower cosmetic was prepared using 86% by mass of a PEG / PPG-150 / 35 copolymer, 13% by mass of PVA, and 1% by mass of a cosmetic agent.
  • Example 15 a shower cosmetic was prepared using 86% by mass of a PEG / PPG-200 / 70 copolymer, 13% by mass of PVA, and 1% by mass of a cosmetic agent.
  • a cosmetic agent a mixture of propanediol (wetting agent), capryl glycol (preservative), ethylhexyl glycerin (deodorant, antiperspirant), and methyl parahydroxybenzoate (preservative) was used.
  • the elution concentration (ppm) was determined from the weight loss (g) of the shower cosmetic in the cartridge 50 in the same manner as in Example 1, and the results are shown in Table 5.
  • Example 14 the elution concentration of the cosmetic agent was 10.2 to 25.6 ppm, compared to Example 6 using only the PEG / PPG-150 / 35 copolymer. The concentration was sufficiently low.
  • the elution concentration of the cosmetic agent was 3.1 to 10.3 ppm, and could be suppressed to a lower concentration than Example 7 using only the PEG / PPG-200 / 70 copolymer. .
  • Example 14 the body feeling (smooth feeling) during use of the shower, the moisturizing feeling after drying, and the solid shape sustainability were measured in the same manner as in Example 1.
  • the bodily sensation during use and the moisturizing feeling after use were the same as those in Examples 6 and 7, respectively, but both have slightly higher swellability and lower solid shape sustainability. did.

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Abstract

This cosmetic for shower use contains as an essential ingredient a polyethylene glycol (PEG)/polyoxypropylene glycol (PPG) copolymer. The cosmetic for shower use preferably further contains polyvinyl alcohol (PVA), and more preferably a beautifying agent. Due to this feature, a constant rate of elution in cold or hot water can be ensured, while also minimizing excessive solubility so as to afford satisfactory persistence of solid shape.

Description

シャワー用化粧剤及び化粧剤カートリッジShower cosmetic and cosmetic cartridge
 本発明は、シャワーヘッドに着脱可能に内蔵した化粧剤カートリッジに収容されるシャワー用化粧剤及び化粧剤カートリッジに関する。 The present invention relates to a shower cosmetic and a cosmetic cartridge accommodated in a cosmetic cartridge that is detachably incorporated in a shower head.
 一般に浴室や洗面所に設けられるシャワー装置の化粧剤カートリッジ内には、油剤、保湿剤、香料、浴用剤等の化粧剤成分が充填されている。そして、それらの化粧剤成分が化粧剤カートリッジ内から冷水中又は温水中に溶出し、シャワーヘッドから散布されるようになっている。化粧剤成分は、通常固形又は粉末として化粧剤カートリッジ内に充填されるが、冷水又は温水に溶解しやすいため、短時間のうちに冷水又は温水に溶解してしまい、固形形状に持続性がなく、ひいては、その効果に持続性がない。このため、化粧剤カートリッジに化粧剤成分を頻繁に補給しなければならず、煩雑であった。従って、冷水又は温水に対する溶解性が抑制され、固形形状の持続性を備えた化粧剤成分が求められている。 Generally, cosmetic components such as oils, moisturizers, fragrances, bathing agents and the like are filled in a cosmetic cartridge of a shower device provided in a bathroom or a bathroom. These cosmetic components are eluted from the cosmetic cartridge into cold water or warm water and are sprayed from the shower head. Cosmetic ingredients are usually filled in cosmetic cartridges as solids or powders, but are easy to dissolve in cold water or warm water, so they dissolve in cold water or warm water in a short time, and the solid form has no persistence. As a result, the effect is not sustainable. For this reason, the cosmetic ingredient must be frequently supplied to the cosmetic cartridge, which is complicated. Accordingly, there is a need for a cosmetic ingredient that is suppressed in solubility in cold water or warm water and has a solid form of durability.
 この種の固形シャワー用製品が特許文献1に開示されている。この固形シャワー用製品は、色素、香料、浴用剤、洗浄剤及び化粧品から選ばれる1種又はそれ以上の成分とともに、ポリエチレングリコールを30~95質量%含有するものである。ポリエチレングリコールとしては、平均分子量が1000~6000のものが好適に使用される。そして、この固形シャワー用製品を使用することにより、冷水又は温水に対する固形シャワー用製品の溶解時間が長く、色素、香料、浴用剤、洗浄剤及び化粧品の溶出を均一にすることができる。 This type of solid shower product is disclosed in Patent Document 1. This solid shower product contains 30 to 95% by mass of polyethylene glycol together with one or more components selected from pigments, fragrances, bathing agents, cleaning agents and cosmetics. Polyethylene glycol having an average molecular weight of 1000 to 6000 is preferably used. By using this solid shower product, the dissolution time of the solid shower product in cold water or warm water is long, and the elution of the pigment, the fragrance, the bath agent, the cleaning agent, and the cosmetic product can be made uniform.
特公平2-7571号公報Japanese Patent Publication No. 2-7571
 前述の特許文献1に記載されている従来構成の固形シャワー用製品では、水に対する溶解性を抑える成分としてポリエチレングリコールが使用されている。しかしながら、そのポリエチレングリコールは、ポリプロピレングリコール等に比べて水に対する溶解性は高い。このため、化粧剤成分が化粧剤カートリッジに充填されて使用されたとき、水に対する溶解性が比較的高く、特に35℃以上の温水に対する溶解性は一層高くなる。従って、化粧剤カートリッジ用の固形シャワー用製品としては、固形形状の持続性が不十分であった。 In the solid shower product described in Patent Document 1 described above, polyethylene glycol is used as a component that suppresses solubility in water. However, the polyethylene glycol has higher solubility in water than polypropylene glycol and the like. For this reason, when the cosmetic ingredient is filled in the cosmetic cartridge and used, the solubility in water is relatively high, and in particular, the solubility in warm water of 35 ° C. or higher is further enhanced. Therefore, as a solid shower product for a cosmetic cartridge, sustainability of the solid shape was insufficient.
 この発明は、このような従来の技術に存在する問題点に着目してなされたものである。その目的とするところは、冷水や温水に対する一定の溶出量を確保できる一方、過度の溶解性を抑制して固形形状の十分な持続性を得ることができるシャワー用化粧剤を提供することにある。 The present invention has been made by paying attention to such problems existing in the prior art. The purpose of the present invention is to provide a shower cosmetic that can secure a certain amount of elution with respect to cold water or hot water, while suppressing excessive solubility and obtaining sufficient sustainability of the solid shape. .
 上記の目的を達成するために、本発明のシャワー用化粧剤は、ポリオキシエチレングリコール(以下、PEGという)/ポリオキシプロピレングリコール(以下、PPGという)共重合体を必須成分として含むものである。 In order to achieve the above object, the shower cosmetic of the present invention contains a polyoxyethylene glycol (hereinafter referred to as PEG) / polyoxypropylene glycol (hereinafter referred to as PPG) copolymer as an essential component.
 シャワー用化粧剤には、ポリビニルアルコール(以下、PVAという)を含むことが好ましい。 The shower cosmetic preferably contains polyvinyl alcohol (hereinafter referred to as PVA).
 さらに、シャワー用化粧剤には、美容剤を含むことが好ましい。 Furthermore, it is preferable that the cosmetic for shower includes a cosmetic.
 前記PEG/PPG共重合体、PVA又は美容剤は、均一に分散され、常温にて固形状であることが好ましい。 The PEG / PPG copolymer, PVA or beauty agent is preferably uniformly dispersed and solid at normal temperature.
 前記PEG/PPG共重合体におけるPEGとPPGとの質量比(PEG/PPG)は、(150~200)/(35~70)であることが好ましい。 The mass ratio of PEG to PPG (PEG / PPG) in the PEG / PPG copolymer is preferably (150 to 200) / (35 to 70).
 前記PVAは、ケン化度が86~90モル%の部分ケン化PVAであることが好ましい。 The PVA is preferably partially saponified PVA having a saponification degree of 86 to 90 mol%.
 前記PVAの含有量は、0.7~15質量%であることが好ましい。 The content of the PVA is preferably 0.7 to 15% by mass.
 また、本発明のシャワーヘッド内に収容される化粧剤カートリッジは、冷水又は温水を取り込む流入口と、前記流入口に連通する通水路と、化粧剤を収納する収納室を有するとともに、前記収納室と前記通水路とを連通して、前記通水路を通過する冷水又は温水を前記収納室に出入り可能にする連通部を有する化粧剤収納部とを備え、前記化粧剤収納部には、上記いずれかに記載のシャワー用化粧剤が収納されているものである。 Further, the cosmetic cartridge accommodated in the shower head of the present invention has an inlet for taking in cold water or hot water, a water passage communicating with the inlet, a storage chamber for storing the cosmetic, and the storage chamber. And a cosmetic storage part having a communication part that allows cold water or hot water passing through the water flow path to enter and exit the storage chamber. The shower cosmetics described in the above are stored.
 本発明によれば、冷水や温水に対する一定の溶出量を確保できる一方、過度の溶解性を抑制して十分な持続性を得ることができるという効果を奏する。 According to the present invention, it is possible to ensure a certain amount of elution with respect to cold water or warm water, while at the same time suppressing the excessive solubility and obtaining sufficient sustainability.
シャワーヘッドの外観図であって、(a)は正面図、(b)は右側面図。It is an external view of a shower head, (a) is a front view, (b) is a right side view. シャワーヘッドの断面図であって、(a)はグリップ部の縦断面図、(b)は(a)とは異なる部分で切断したグリップ部の縦断面図。It is sectional drawing of a shower head, Comprising: (a) is a longitudinal cross-sectional view of a grip part, (b) is a longitudinal cross-sectional view of the grip part cut | disconnected by the part different from (a). シャワーヘッドのグリップ部の内部構造を説明する図であり、(a)は平面図、(b)は斜視図。It is a figure explaining the internal structure of the grip part of a shower head, (a) is a top view, (b) is a perspective view. シャワーヘッドに内蔵されるカートリッジを説明する図であって、(a)はカートリッジの外観を示す斜視図、(b)はカートリッジの断面図。It is a figure explaining the cartridge incorporated in a shower head, Comprising: (a) is a perspective view which shows the external appearance of a cartridge, (b) is sectional drawing of a cartridge. 実施例1及び比較例1,2のシャワー用化粧剤について、温水の温度と、温水中へのシャワー用化粧剤の溶出濃度との関係を示すグラフ。The graph which shows the relationship between the temperature of warm water and the elution density | concentration of the shower cosmetic in warm water about the cosmetics for showers of Example 1 and Comparative Examples 1 and 2.
 以下、この発明を具体化した実施形態を詳細に説明する。 Hereinafter, embodiments embodying the present invention will be described in detail.
 シャワー用化粧剤は、PEG/PPG共重合体を必須成分として含むものである。このシャワー用化粧剤には、PVAが含まれることが好ましく、さらに美容剤が含まれることが好ましい。また、シャワー用化粧剤には、その他の成分が含まれていてもよい。 The shower cosmetic contains a PEG / PPG copolymer as an essential component. This shower cosmetic agent preferably contains PVA, and more preferably contains a cosmetic agent. Further, the shower cosmetic may contain other components.
 次に、シャワー用化粧剤の各成分について説明する。 Next, each component of the shower cosmetic will be described.
 (PEG/PPG共重合体)
 PEG/PPG共重合体は、分子中にポリオキシエチレングリコール(ポリエチレングリコール)単位とポリオキシプロピレングリコール(ポリプロピレングリコール)単位とを有し、ノニオン界面活性剤であって、保湿効果を有する。シャワー用化粧剤に用いられるPEG/PPG共重合体としては、常温で固体であるものが好適である。
(PEG / PPG copolymer)
The PEG / PPG copolymer has a polyoxyethylene glycol (polyethylene glycol) unit and a polyoxypropylene glycol (polypropylene glycol) unit in the molecule, is a nonionic surfactant, and has a moisturizing effect. As the PEG / PPG copolymer used in the cosmetic for shower, those that are solid at room temperature are suitable.
 このPEG/PPG共重合体を構成するPEG単位は、水(冷水又は温水)に対するシャワー用化粧剤の溶解性を高めるように機能し、PPG単位は水に対するシャワー用化粧剤の溶解性を抑制するように機能する。従って、これらのPEG単位とPPG単位の双方を有することにより、PEG単位とPPG単位とが相乗的に作用し、冷水及び温水に対するシャワー用化粧剤の溶解性を抑制し、溶出の持続性を図ることができる。 The PEG unit constituting the PEG / PPG copolymer functions to increase the solubility of the shower cosmetic in water (cold water or hot water), and the PPG unit suppresses the solubility of the shower cosmetic in water. To function. Therefore, by having both of these PEG units and PPG units, the PEG units and the PPG units act synergistically to suppress the solubility of the cosmetic for shower in cold water and hot water, and to maintain elution sustainability. be able to.
 PEG/PPG共重合体におけるPEGとPPGとの共重合比は特に制限されない。従って、
PEG/PPG共重合体としては、下記のものを挙げることができる(数字は質量比を示す)。
The copolymerization ratio of PEG and PPG in the PEG / PPG copolymer is not particularly limited. Therefore,
Examples of the PEG / PPG copolymer include the following (numbers indicate mass ratio).
 PEG/PPG-3/17共重合体、PEG/PPG-5/30共重合体、PEG/PPG-5/35共重合体、PEG/PPG-8/55共重合体、PEG/PPG-10/30共重合体、PEG/PPG-10/65共重合体、PEG/PPG-12/35共重合体、PEG/PPG-16/17共重合体、PEG/PPG-20/9共重合体、PEG/PPG-20/20共重合体、PEG/PPG-20/60共重合体、PEG/PPG-22/25共重合体、PEG/PPG-25/30共重合体、PEG/PPG-30/35共重合体、PEG/PPG-35/40共重合体、PEG/PPG-50/40共重合体、PEG/PPG-150/35共重合体、PEG/PPG-160/30共重合体、PEG/PPG-190/60共重合体、PEG/PPG-200/40共重合体、PEG/PPG-200/70共重合体、PEG/PPG-240/60共重合体、PEG/PPG-300/55共重合体。 PEG / PPG-3 / 17 copolymer, PEG / PPG-5 / 30 copolymer, PEG / PPG-5 / 35 copolymer, PEG / PPG-8 / 55 copolymer, PEG / PPG-10 / 30 copolymer, PEG / PPG-10 / 65 copolymer, PEG / PPG-12 / 35 copolymer, PEG / PPG-16 / 17 copolymer, PEG / PPG-20 / 9 copolymer, PEG / PPG-20 / 20 copolymer, PEG / PPG-20 / 60 copolymer, PEG / PPG-22 / 25 copolymer, PEG / PPG-25 / 30 copolymer, PEG / PPG-30 / 35 Copolymer, PEG / PPG-35 / 40 copolymer, PEG / PPG-50 / 40 copolymer, PEG / PPG-150 / 35 copolymer, PEG / PPG-160 / 30 copolymer, PEG / PPG-190 60 copolymer, PEG / PPG-200/40 copolymer, PEG / PPG-200/70 copolymer, PEG / PPG-240/60 copolymer, PEG / PPG-300/55 copolymer.
 上記の共重合体の例の内、PEG/PPG(質量比)=(150~200)/(35~70)の範囲であることが好ましい。この共重合比が150/35を越えて、PEGの割合が大きくなると、冷水及び温水に対するシャワー用化粧剤の溶解性が高くなり過ぎる傾向を示す。一方、共重合比が200/70より小さくなって、PEGの割合が小さくなると、冷水及び温水に対するシャワー用化粧剤の溶解性が不十分となる。 Of the above copolymer examples, the range is preferably PEG / PPG (mass ratio) = (150 to 200) / (35 to 70). When this copolymerization ratio exceeds 150/35 and the proportion of PEG increases, the solubility of the shower cosmetic in cold water and hot water tends to be too high. On the other hand, when the copolymerization ratio is smaller than 200/70 and the ratio of PEG is decreased, the solubility of the shower cosmetic in cold water and hot water becomes insufficient.
 ちなみに、PEG/PPG質量比が150/35の共重合体の凝固点は52℃、PEG/PPG重量比が200/70の共重合体凝固点は55℃である。 Incidentally, the freezing point of the copolymer having a PEG / PPG mass ratio of 150/35 is 52 ° C., and the freezing point of the copolymer having a PEG / PPG weight ratio of 200/70 is 55 ° C.
 なお、PEG/PPG共重合体の分子量(重合度)が高くなれば、冷水又は温水に対するシャワー用化粧剤の溶出速度が抑えられ、膨潤も抑制されるが、シャワー用化粧剤の使用時における体感(ぬめり感)が悪くなるため、それらを考慮してPEG/PPG共重合体の分子量が適宜設定される。 If the molecular weight (degree of polymerization) of the PEG / PPG copolymer is increased, the elution rate of the shower cosmetic with respect to cold water or hot water can be suppressed and swelling can be suppressed. Since (smoothness) deteriorates, the molecular weight of the PEG / PPG copolymer is appropriately set in consideration of them.
 (PVA)
 PVAは、多数の水酸基を有することから、非常に強い親水性を有し、特に温水に可溶という特性がある。従って、シャワー用化粧剤にPVAを配合することにより、特に35℃以上の温水に対するシャワー用化粧剤の溶解性を高めることができる。
(PVA)
Since PVA has a large number of hydroxyl groups, it has a very strong hydrophilic property and is particularly soluble in hot water. Therefore, by adding PVA to the shower cosmetic, the solubility of the shower cosmetic particularly in warm water of 35 ° C. or higher can be enhanced.
 このPVAは、ポリ酢酸ビニルのケン化反応により得られ、下記の一般式で示される。 This PVA is obtained by saponification reaction of polyvinyl acetate and is represented by the following general formula.
 -〔CH-CH(OH)〕-〔CH-CH(OCOCH)〕
 ここで、PVAの重合度はm+n、ケン化度はm/(m+n)で表される。
-[CH 2 -CH (OH)] m- [CH 2 -CH (OCOCH 3 )] n
Here, the polymerization degree of PVA is represented by m + n, and the saponification degree is represented by m / (m + n).
 シャワー用化粧剤に用いられるPVAとしては、温水に対する溶解性を高めるとともに、膨潤性を抑えることができる点から、部分ケン化PVAが好ましく、ケン化度が好ましくは86~90モル%、重合度が好ましくは1800~2000のものである。ケン化度が86モル%未満又は重合度が1800未満の場合には、シャワー用化粧剤が冷水や温水に対して膨潤する傾向が強くなって好ましくない。一方、ケン化度が90モル%より大きく又は重合度が2000より大きい場合には、冷水や温水に対するシャワー用化粧剤の溶解性が低下して好ましくない。 As the PVA used in the cosmetic for shower, partially saponified PVA is preferable from the viewpoint of enhancing the solubility in warm water and suppressing swelling, and the degree of saponification is preferably 86 to 90 mol%, the degree of polymerization. Is preferably 1800-2000. When the degree of saponification is less than 86 mol% or the degree of polymerization is less than 1800, the tendency for the cosmetic for shower to swell against cold water or hot water becomes unfavorable. On the other hand, when the degree of saponification is greater than 90 mol% or the degree of polymerization is greater than 2000, the solubility of the shower cosmetic in cold water or hot water is unfavorable.
 (美容剤)
 美容剤としては、コラーゲン、セラミド、プラセンタ、各種ビタミン(ビタミンC、ビタミンE等)、天然香料、合成香料、調合香料(フレグランス等)、油剤、保湿剤、香料、消臭剤、制汗剤、色素、防腐剤、乳化剤、アミノ酸、水等を挙げることができる。美容剤の種類は限定されるものではなく、公知のものを使用してもよい。
(Beauty agent)
Beauty agents include collagen, ceramide, placenta, various vitamins (vitamin C, vitamin E, etc.), natural fragrances, synthetic fragrances, formulated fragrances (fragrances, etc.), oils, moisturizers, fragrances, deodorants, antiperspirants, Examples thereof include pigments, preservatives, emulsifiers, amino acids and water. The kind of beauty agent is not limited, You may use a well-known thing.
 前記PEG/PPG共重合体及びPVAを含有することにより、美容剤がシャワー用化粧剤から無駄に溶出することなく、その美容剤を長期間に亘って溶出させることができる。 By containing the PEG / PPG copolymer and PVA, the beauty agent can be eluted over a long period of time without the beauty agent being unnecessarily eluted from the shower cosmetic.
 (その他の添加剤成分)
 その他の添加剤成分としては、粘度調整剤、賦形剤等が適宜選択して用いられる。
(Other additive components)
As other additive components, viscosity modifiers, excipients and the like are appropriately selected and used.
 (シャワー用化粧剤の組成)
 シャワー用化粧剤を構成するPEG/PPG共重合体は、シャワー用化粧剤の主成分であって、シャワー用化粧剤中に80~97質量%含まれることが好ましい。このPEG/PPG共重合体の含有量が80質量%を下回ると、冷水や温水に対するシャワー用化粧剤の適度な溶解性を得ることが難しく、また保湿性を得ることも難しくなる。一方、PEG/PPG共重合体の含有量が97質量%を上回ると、PVAや美容剤の含有量が相対的に減少し、それらの成分に基づく効果が得られず、好ましくない。
(Composition of cosmetic for shower)
The PEG / PPG copolymer constituting the shower cosmetic agent is a main component of the shower cosmetic agent, and is preferably contained in an amount of 80 to 97% by mass in the shower cosmetic agent. When the content of the PEG / PPG copolymer is less than 80% by mass, it is difficult to obtain appropriate solubility of the cosmetic for shower in cold water or hot water, and it is difficult to obtain moisture retention. On the other hand, when the content of the PEG / PPG copolymer exceeds 97% by mass, the content of PVA and the cosmetic agent is relatively decreased, and an effect based on those components cannot be obtained, which is not preferable.
 また、PVAは、シャワー用化粧剤中に0.7~15質量%含まれることが好ましく、3.5~15質量%含まれることがさらに好ましい。PVAの含有量が0.7質量%未満の場合には、シャワー用化粧剤の使用時に冷水又は温水に接触したとき、シャワー用化粧剤が膨潤する傾向が強くなって好ましくない。一方、PVAの含有量が15質量%を超える場合には、PEG/PPG共重合体及び美容剤の含有量が相対的に少量になり、それらの成分による効果が十分に発揮されず、好ましくない。 Further, PVA is preferably contained in the shower cosmetic agent in an amount of 0.7 to 15% by mass, more preferably 3.5 to 15% by mass. When the content of PVA is less than 0.7% by mass, when the shower cosmetic agent is used, it tends to swell when it comes into contact with cold water or warm water, which is not preferable. On the other hand, when the content of PVA exceeds 15% by mass, the content of the PEG / PPG copolymer and the cosmetic agent becomes relatively small, and the effects of these components are not sufficiently exhibited, which is not preferable. .
 さらに、美容剤は、シャワー用化粧剤中に2~7質量%含まれることが好ましい。美容剤の含有量が2質量%より少ない場合には、美容剤としての保湿性、芳香性等の効果を十分に発現することができなくなる。一方、美容剤の含有量が7質量%より多い場合には、PEG/PPG共重合体やPVAの含有量が相対的に少なくなってそれらの成分による機能の発現が不足し、シャワー用化粧剤として好ましくない。 Furthermore, the cosmetic agent is preferably contained in the shower cosmetic agent in an amount of 2 to 7% by mass. When the content of the cosmetic agent is less than 2% by mass, effects such as moisturizing property and fragrance as the cosmetic agent cannot be sufficiently exhibited. On the other hand, when the content of the beauty agent is more than 7% by mass, the content of the PEG / PPG copolymer or PVA is relatively small, and the function expression by these components is insufficient, and the cosmetic for shower It is not preferable.
 加えて、その他の添加剤成分が配合される場合には、その含有量はシャワー用化粧剤中に5質量%以下であることが望ましい。その他の添加剤成分の含有量が5質量%を超えると、前述した各成分の含有量が低下し、シャワー用化粧剤の本来の機能を発現できなくなって好ましくない。 In addition, when other additive components are blended, the content is desirably 5% by mass or less in the shower cosmetic. When the content of the other additive components exceeds 5% by mass, the content of each component described above is lowered, and the original function of the cosmetic for shower cannot be expressed.
 上記のシャワー用化粧剤は化粧剤カートリッジに収納するとともに、管理を容易にするために、常温で固形状であることが好ましい。すなわち、シャワー用化粧剤をシャワーによる身体の洗浄時に使用しない場合、その形状を維持するため、常温において固形状であることが好ましい。また、PEG/PPG共重合体とPVAと美容剤とは、均一に分散しておくと、使用時に溶出する場合、各成分を均一に溶出させることができるため好ましい。 It is preferable that the above-mentioned shower cosmetic is stored in a cosmetic cartridge and is solid at normal temperature for easy management. That is, when the shower cosmetic is not used at the time of washing the body by the shower, it is preferably solid at room temperature in order to maintain its shape. In addition, it is preferable that the PEG / PPG copolymer, PVA, and the cosmetic agent are uniformly dispersed because each component can be eluted evenly when it is eluted at the time of use.
 (化粧剤カートリッジ及びシャワーヘッド)
 次に、実施形態の化粧剤カートリッジ(以下、単にカートリッジという)50が組み込まれるシャワーヘッド10、及び、カートリッジ50の構成を図1~図4に基づいて説明する。
(Cosmetic cartridge and shower head)
Next, the configuration of the shower head 10 in which the cosmetic cartridge (hereinafter simply referred to as the cartridge) 50 according to the embodiment is incorporated and the cartridge 50 will be described with reference to FIGS.
 図1(a)(b)に示すように、シャワーヘッド10は、ヘッド部11とグリップ部12とから構成されている。ヘッド部11にはグリップ部12内の水路70を図2(a)(b)に示す下流側の流路71,72のうちのいずれか一方と連通させるために切替え操作される切替部20が設けられている。流路71,72は切替部20の下流側で合流されている。この切替部20は、第1操作部材45及び第2操作部材48を備えている。ヘッド部11の先端部には多数の散水孔16が形成されている。 As shown in FIGS. 1A and 1B, the shower head 10 includes a head portion 11 and a grip portion 12. The head unit 11 includes a switching unit 20 that is switched to communicate the water channel 70 in the grip unit 12 with one of the downstream channels 71 and 72 shown in FIGS. Is provided. The flow paths 71 and 72 are merged on the downstream side of the switching unit 20. The switching unit 20 includes a first operation member 45 and a second operation member 48. A large number of water spray holes 16 are formed at the tip of the head portion 11.
 図2(a)(b)に示すように、前記グリップ部12の水路70の内部には、前記カートリッジ50が交換可能に収容されている。グリップ部12の内周面とカートリッジ50の外周面との間における水路70には通水間隙12cが形成されている。ヘッド部11とグリップ部12とは螺合部12dを介して連結され、その螺合を解除することにより、水路70の上部が開放されて、グリップ部12内にカートリッジ50を脱着できる。 2 (a) and 2 (b), the cartridge 50 is accommodated in the water channel 70 of the grip portion 12 in a replaceable manner. A water passage gap 12 c is formed in the water passage 70 between the inner peripheral surface of the grip portion 12 and the outer peripheral surface of the cartridge 50. The head portion 11 and the grip portion 12 are connected via a screwing portion 12d. By releasing the screwing, the upper portion of the water channel 70 is opened, and the cartridge 50 can be attached to and detached from the grip portion 12.
 図3(a)(b)に示すように、水路70の下流側の底部には、複数の嵩上げ部12eが形成されている。図2(a)(b)に示すように、この嵩上げ部12e上にカートリッジ50を載置することによって、冷水及び温水が、水路70内に拡散される。グリップ部12の内周面には、カートリッジ50の外周面に係合して、カートリッジ50を水路70の中心位置において位置決めする複数の位置決めリブ12fが形成されている。 As shown in FIGS. 3A and 3B, a plurality of raised portions 12 e are formed at the bottom of the downstream side of the water channel 70. As shown in FIGS. 2A and 2B, by placing the cartridge 50 on the raised portion 12 e, cold water and hot water are diffused into the water channel 70. A plurality of positioning ribs 12 f that are engaged with the outer peripheral surface of the cartridge 50 and position the cartridge 50 at the center position of the water channel 70 are formed on the inner peripheral surface of the grip portion 12.
 図4(a)(b)に示すように、カートリッジ50は蓋部材61を有する。カートリッジ50は、有底筒体形状のカートリッジケース51を備える。カートリッジケース51の底壁には、複数のスリット51aが形成されている。図4(b)に示すように、カートリッジケース51の底壁の中心には、スリット51aと連通する円柱形状の弁室51bが形成されている。この弁室51bは、その弁室51bの上部に設けた開口51cを介して後述する内管53と連通する。開口51cは、流入口に相当し、内管53は通水路に相当する。 4A and 4B, the cartridge 50 has a lid member 61. The cartridge 50 includes a cartridge case 51 having a bottomed cylindrical shape. A plurality of slits 51 a are formed in the bottom wall of the cartridge case 51. As shown in FIG. 4B, a cylindrical valve chamber 51b communicating with the slit 51a is formed at the center of the bottom wall of the cartridge case 51. The valve chamber 51b communicates with an inner pipe 53 described later through an opening 51c provided in the upper portion of the valve chamber 51b. The opening 51c corresponds to an inflow port, and the inner pipe 53 corresponds to a water passage.
 図2(a)(b)及び図4(b)に示すように、弁室51b内には、逆止弁として機能するゴム等の弾性材よりなるダックビル弁52が配置されている。ダックビル弁52の先端部52bは2つに割れて、その先端部52bは弾性接触される。 2 (a) (b) and 4 (b), a duckbill valve 52 made of an elastic material such as rubber that functions as a check valve is disposed in the valve chamber 51b. The tip 52b of the duckbill valve 52 is broken into two, and the tip 52b is elastically contacted.
 図2(a)(b)及び図4(b)に示すように、カートリッジケース51の軸心部には、下部が前記弁室51bと一体化された円筒形状の内管53が配置されている。内管53には、周方向に、かつ長さ方向の全長にわたって多数の連通孔53cが所定ピッチで透設されている。連通孔53cは連通部に相当する。内管53及び弁室51bとカートリッジケース51との間には、薬剤収容部54が区画されている。カートリッジケース51の下流側端部には筒状の出口部材55が嵌合され、その内部には内管53の端部が嵌入されて、出口部材55と内管53とが連通されている。薬剤収容部54の収納空間内には、固形でほぼ円筒状に形成された水溶性のシャワー用化粧剤100が収容されている。前記薬剤収容部54の収納空間は収納室に相当し、薬剤収容部54は化粧剤収納部に相当する。そして、シャワー用化粧剤100が溶解されていない初期状態においてシャワー用化粧剤100の下流側端部と、出口部材55の下端との間には空間101が形成されている。本実施形態では、シャワー用化粧剤100として、例えば保湿成分を含む保湿剤を用いる。このシャワー用化粧剤100は、内管53の連通孔53cを介して導入された冷水又は温水によって溶解されて、保湿液を生成する。そして、保湿液は、出口部材55を介してカートリッジ50の外に流出する。 As shown in FIGS. 2 (a), 2 (b) and 4 (b), a cylindrical inner tube 53 whose lower portion is integrated with the valve chamber 51b is disposed at the axial center portion of the cartridge case 51. Yes. The inner pipe 53 is provided with a large number of communication holes 53c at a predetermined pitch in the circumferential direction and over the entire length in the length direction. The communication hole 53c corresponds to a communication part. A medicine container 54 is defined between the inner tube 53 and the valve chamber 51 b and the cartridge case 51. A cylindrical outlet member 55 is fitted to the downstream end portion of the cartridge case 51, and an end portion of the inner pipe 53 is fitted therein, and the outlet member 55 and the inner pipe 53 are communicated with each other. In the storage space of the medicine storage portion 54, a water-soluble shower cosmetic 100 formed in a solid and substantially cylindrical shape is stored. The storage space of the medicine container 54 corresponds to a storage room, and the medicine container 54 corresponds to a cosmetic agent storage part. A space 101 is formed between the downstream end of the shower cosmetic 100 and the lower end of the outlet member 55 in the initial state where the shower cosmetic 100 is not dissolved. In the present embodiment, for example, a moisturizing agent containing a moisturizing component is used as the shower cosmetic 100. The shower cosmetic 100 is dissolved by cold water or hot water introduced through the communication hole 53c of the inner tube 53 to generate a moisturizing liquid. Then, the moisturizing liquid flows out of the cartridge 50 through the outlet member 55.
 図4(b)に示す内管53の上端部と出口部材55との間には、網状のストレーナ57が配置されている。このストレーナ57は金網等よりなり、ストレーナ57には多数の微細な孔が形成されている。このストレーナ57は、固形状態の薬剤100から分離して連通孔53cから流出した粒体を、ヘッド部11側に流出しないように留める。ストレーナ57は、全体として逆カップ状をなし、シャワー用化粧剤100の下流に向かって膨出されている。 A reticulated strainer 57 is disposed between the upper end portion of the inner pipe 53 and the outlet member 55 shown in FIG. The strainer 57 is made of a wire mesh or the like, and a number of fine holes are formed in the strainer 57. The strainer 57 keeps the particles separated from the solid drug 100 and flowing out from the communication hole 53c from flowing out to the head part 11 side. The strainer 57 has an inverted cup shape as a whole, and bulges toward the downstream side of the shower cosmetic 100.
 次に、以上のように構成されたシャワーヘッドの化粧剤カートリッジ及びシャワー用化粧剤の作用について説明する。 Next, the operation of the shower head cosmetic cartridge and shower cosmetic configured as described above will be described.
 保湿液を含まないシャワーを利用する場合には、図2(a)に示すように、使用者は第2操作部材48を押し込む。このようにすれば、詳細な説明は省略するが、水路70の通水間隙12c側の流路71が開放されるとともに、内管53側の流路72が閉鎖されて、冷水や温水が、シャワーホースを介し、通水間隙12cを通ってヘッド部11の流路71に流れ、散水孔16から放出される。この場合、内管53の下流側の流路72が閉塞しているため、ダックビル弁52は開放されず、カートリッジ50の内管53の内部には、水が流入しない。従って、この状態において、ダックビル弁52が自身の弾性によって閉塞されており、内管53内の水圧がダックビル弁52の上流側の水圧より高くなったとしても、その圧力差はダックビル弁52に対して弁閉鎖方向に作用する。従って、内管53内の保湿液がシャワーヘッド10の外部のシャワーホース側に逆流することを回避できる。 When using a shower that does not contain moisturizing liquid, the user pushes in the second operation member 48 as shown in FIG. In this way, although detailed explanation is omitted, the flow channel 71 on the water passage gap 12c side of the water channel 70 is opened, and the flow channel 72 on the inner tube 53 side is closed, so that cold water and hot water are It flows into the flow path 71 of the head part 11 through the water flow gap 12 c through the shower hose and is discharged from the water spray hole 16. In this case, since the flow path 72 on the downstream side of the inner pipe 53 is closed, the duckbill valve 52 is not opened, and water does not flow into the inner pipe 53 of the cartridge 50. Therefore, in this state, even if the duckbill valve 52 is closed by its own elasticity and the water pressure in the inner pipe 53 becomes higher than the water pressure on the upstream side of the duckbill valve 52, the pressure difference is relative to the duckbill valve 52. Acting in the valve closing direction. Therefore, it is possible to prevent the moisturizing liquid in the inner pipe 53 from flowing backward to the shower hose side outside the shower head 10.
 保湿液を含むシャワーを利用する場合には、使用者は第1操作部材45の押圧部45aを押圧する。このため、図示はしないが流路72が開放される。従って、冷水又は温水は、前記通水間隙12cから流路71側へ流れるだけではなく、ダックビル弁52の上流側の流路72が開放されるため、図2(a),(b)に示すダックビル弁52が開かれて、カートリッジ50の内管53の内部に流入する。内管53内に流入した冷水又は温水は、内管53の連通孔53cを介して、薬剤収容部54に流入する。薬剤収容部54に流された冷水又は温水は、薬剤収容部54の薬剤を溶解し、保湿液となる。そして、その保湿液は連通孔53cから内管53内に流出し、ストレーナ57を介して、出口部材55内から流路72に流入する。 When using a shower containing moisturizing liquid, the user presses the pressing portion 45a of the first operating member 45. For this reason, although not shown, the flow path 72 is opened. Accordingly, the cold water or hot water not only flows from the water passage gap 12c to the flow path 71 but also opens the flow path 72 on the upstream side of the duckbill valve 52, and therefore, as shown in FIGS. 2 (a) and 2 (b). The duckbill valve 52 is opened and flows into the inner pipe 53 of the cartridge 50. The cold water or hot water that has flowed into the inner tube 53 flows into the medicine container 54 through the communication hole 53 c of the inner tube 53. The cold water or hot water that has flowed into the medicine container 54 dissolves the medicine in the medicine container 54 and becomes a moisturizing liquid. Then, the moisturizing liquid flows out from the communication hole 53 c into the inner pipe 53 and flows into the flow path 72 from the outlet member 55 through the strainer 57.
 流路72内の保湿液は、切替部20の下流側において通水間隙12cから流路71内を流れてきた冷水又は温水と混合されて、希薄された保湿液となる。そして、希薄された保湿液は、散水孔16から放出される。なお、弁室51bの壁には孔が形成されていないが、シャワー用化粧剤100が溶解によってその体積が減少すれば、連通孔53cを通して薬剤収容部54に入り込んだ冷水や温水が、体積減少後のシャワー用化粧剤100の周囲で乱流を形成し、体積減少後のシャワー用化粧剤100を浮き上がらせる。このため、弁室51bの壁に孔が形成されていなくても、シャワー用化粧剤100は適切に溶解されて連通孔53cから流出される。 The moisturizing liquid in the flow path 72 is mixed with cold water or warm water flowing in the flow path 71 from the water passage gap 12 c on the downstream side of the switching unit 20 to become a diluted moisturizing liquid. Then, the diluted moisturizing liquid is discharged from the sprinkling holes 16. In addition, although the hole is not formed in the wall of the valve chamber 51b, if the volume of the shower cosmetic 100 is reduced by dissolution, cold water and hot water that have entered the medicine container 54 through the communication hole 53c are reduced in volume. A turbulent flow is formed around the later shower cosmetic 100, and the shower cosmetic 100 after the volume reduction is lifted. For this reason, even if a hole is not formed in the wall of the valve chamber 51b, the shower cosmetic 100 is appropriately dissolved and flows out from the communication hole 53c.
 以上のように、第1,第2操作部材45,48の選択操作により、保湿液を含まない通常のシャワーと保湿液を含むシャワーとを得ることができる。この場合、適切濃度の保湿液が得られるように、前記内管53の内径,連通孔53cの開口の大きさや数、あるいは配置位置等が設定される。このようにすれば、薬剤収容部54内に流入した冷水又は温水によってシャワー用化粧剤100が少しずつ削り取られて、瞬時に溶解される。 As described above, a normal shower that does not include the moisturizing liquid and a shower that includes the moisturizing liquid can be obtained by the selection operation of the first and second operating members 45 and 48. In this case, the inner diameter of the inner tube 53, the size and number of the openings of the communication hole 53c, the arrangement position, and the like are set so that a moisturizing liquid with an appropriate concentration can be obtained. If it does in this way, the cosmetics 100 for showers will be scraped off little by little by the cold water or warm water which flowed in the chemical | medical agent accommodating part 54, and it will melt | dissolve instantly.
 加えて、シャワー用化粧剤100の下流側に空間101が形成され、しかも、シャワー用化粧剤100の上端とストレーナ57との間に間隔が形成され、加えて、ストレーナ57が下流側に膨出状に形成されている。そのため、シャワー用化粧剤100から剥離された比較的大きな粒体が、ストレーナ57の上流側において水流によって乱舞するように動く。このため、そのような粒体がストレーナ57内側に付着して流路が塞がれることを防止できる。 In addition, a space 101 is formed on the downstream side of the shower cosmetic 100, and an interval is formed between the upper end of the shower cosmetic 100 and the strainer 57. In addition, the strainer 57 bulges downstream. It is formed in a shape. Therefore, a relatively large particle peeled from the shower cosmetic 100 moves so as to fluctuate due to the water flow on the upstream side of the strainer 57. For this reason, it can prevent that such a granular material adheres to the inside of the strainer 57, and a flow path is blocked.
 シャワー用化粧剤100には必須成分としてPEG/PPG共重合体が含まれていることから、冷水又は温水に対する溶解性を抑えつつ、一定の溶解性を発現することができる。また、シャワー用化粧剤100にはPVAが含まれているため、特に温水に対する溶解性が高められる。さらに、美容剤としての保湿剤により、シャワーを浴びた後の肌のしっとり感を良好にすることができる。 Since the shower cosmetic 100 contains a PEG / PPG copolymer as an essential component, it can exhibit a certain solubility while suppressing its solubility in cold water or warm water. Moreover, since the shower cosmetic 100 contains PVA, the solubility in warm water is particularly enhanced. Furthermore, the moisturizing agent as a beauty agent can improve the moist feeling of the skin after taking a shower.
 このように、本実施形態のシャワー用化粧剤100によれば、冷水又は温水に対する過度の溶解性を抑えることができると同時に、一定の溶出量で長期間に亘って安定した状態で溶出させることができる。 As described above, according to the shower cosmetic 100 of the present embodiment, excessive solubility in cold water or warm water can be suppressed, and at the same time, it is eluted in a stable state over a long period of time with a constant amount of elution. Can do.
 (変更例)
 ・ 上記実施形態においては、カートリッジ50に収容される薬剤として保湿剤を用いた。カートリッジ50に収容される薬剤は、これに限らず、香水、スリミング剤、美白作用を有する化粧水、制汗剤などの他の化粧用添加剤、ニキビ、アトピー、皮膚病対策用の薬剤であってもよい。また、上記実施形態においては、固形かつ円筒状の薬剤を用いたが、薬剤の形状や形態はこれに限定されない。例えば、ジェル状や粒子状の薬剤等を用いてもよい。
(Example of change)
In the above embodiment, a humectant is used as the medicine stored in the cartridge 50. The medicine contained in the cartridge 50 is not limited to this, but is a perfume, a slimming agent, other cosmetic additives such as whitening lotion, antiperspirant, acne, atopy, and a dermatological drug. May be. Moreover, in the said embodiment, although the solid and cylindrical chemical | medical agent was used, the shape and form of a chemical | medical agent are not limited to this. For example, a gel-like or particulate drug may be used.
 ・ 上記実施形態においては、シャワーヘッド10から水のみを散布する場合には、カートリッジ50に水が流入しないように、カートリッジ50にダックビル弁52を設けた。水のみを散布する際にカートリッジに水が流入しないようにする逆止弁は、このダックビル弁52以外の構成であってもよい。また、水のみを散布する場合に、カートリッジ50において薬剤が溶解した溶液が流出しない構成であれば、カートリッジ50に水が流入する構成にしてもよい。 In the above embodiment, the duck bill valve 52 is provided in the cartridge 50 so that the water does not flow into the cartridge 50 when only water is sprayed from the shower head 10. The check valve that prevents water from flowing into the cartridge when only water is sprayed may have a configuration other than the duckbill valve 52. Further, when only water is sprayed, if the solution in which the medicine is dissolved in the cartridge 50 does not flow out, the water may flow into the cartridge 50.
 この実施形態によれば、以下のような効果を得ることができる。 According to this embodiment, the following effects can be obtained.
 (1)本実施形態のシャワー用化粧剤は、PEG/PPG共重合体を必須成分として含むように構成した。この結果、PEG/PPG共重合体のPEG単位とPPG単位の相乗的な働きにより、冷水や温水に対する一定の溶出量を確保できる一方、過度の溶解性を抑制して固形形状の十分な持続性を得ることができる。 (1) The shower cosmetic of the present embodiment was configured to include a PEG / PPG copolymer as an essential component. As a result, the synergistic action of the PEG unit and the PPG unit of the PEG / PPG copolymer can ensure a certain amount of elution with respect to cold water or hot water, while suppressing the excessive solubility and sufficient sustainability of the solid shape. Can be obtained.
 (2)シャワー用化粧剤には、さらにPVAを含むように構成した。PVAの水に対する溶解度は温度に応じて変化し、冷水よりも温水に対する溶解度が高い。そのため、PVAの添加量を調節することによって、冷水や温水に対するシャワー用化粧剤全体の溶解度を調節することができる。また、PVAを添加することによって、シャワー用化粧剤の膨潤性を抑制することができる。 (2) The shower cosmetic was further configured to contain PVA. The solubility of PVA in water varies depending on the temperature, and the solubility in hot water is higher than that in cold water. Therefore, the solubility of the entire cosmetic for shower with respect to cold water or hot water can be adjusted by adjusting the addition amount of PVA. Moreover, the swelling property of the cosmetic for shower can be suppressed by adding PVA.
 (3)シャワー用化粧剤には、さらに美容剤を含むように構成した。そのため、冷水や温水に対するシャワー用化粧剤の適度な溶解性を維持しつつ、美容剤に基づく保湿性、消臭性、制汗性、防腐性等の効果を発揮することができる。 (3) The shower cosmetic is further configured to include a cosmetic agent. Therefore, effects such as moisturizing property, deodorizing property, antiperspirant property, antiseptic property and the like based on the beauty agent can be exhibited while maintaining appropriate solubility of the cosmetic for shower in cold water or hot water.
 (4)本実施形態のシャワー用化粧剤では、PEG/PPG共重合体と、前記PVAと前記美容剤とが均一に分散され、常温にて固形状にした。この結果、使用時にこれらの成分を均一に溶出させることができる。 (4) In the shower cosmetic of this embodiment, the PEG / PPG copolymer, the PVA, and the beauty agent were uniformly dispersed and solidified at room temperature. As a result, these components can be uniformly eluted during use.
 (5)前記PEG/PPG共重合体におけるPEGとPPGとの質量比は、(150~200)/(35~70)である。この場合、水及び温水に対するシャワー用化粧剤の溶解性を抑制して持続性を向上させることができる。 (5) The mass ratio of PEG to PPG in the PEG / PPG copolymer is (150 to 200) / (35 to 70). In this case, it is possible to improve the sustainability by suppressing the solubility of the cosmetic for shower in water and warm water.
 (6)前記PVAは、ケン化度が86~90モル%の部分ケン化PVAである。この結果、部分ケン化PVAの添加量を調節することによって、冷水や温水に対するシャワー用化粧剤全体の溶解度の調節を、より一層容易に行うことができる。また、部分ケン化PVAを添加することによって、シャワー用化粧剤の膨潤性を抑制することができる。 (6) The PVA is a partially saponified PVA having a saponification degree of 86 to 90 mol%. As a result, by adjusting the amount of the partially saponified PVA, the solubility of the entire shower cosmetic with respect to cold water or hot water can be more easily adjusted. Moreover, the swelling property of the cosmetic for shower can be suppressed by adding partially saponified PVA.
 (7)前記PVAの含有量は、0.7~15質量%である。この結果、シャワー用化粧剤の使用時にシャワー用化粧剤が冷水又は温水に触れて膨潤するおそれを低減することができる。PVAのより好ましい含有量は、実施例11及び実施例14,15を参照すると、1~13重量%である。PVAのさらに好ましい含有量は、実施例2,9及び10を参照すると、3.5~7質量%である。 (7) The content of the PVA is 0.7 to 15% by mass. As a result, it is possible to reduce the possibility that the shower cosmetic agent swells when touched with cold water or hot water when the shower cosmetic agent is used. A more preferable content of PVA is 1 to 13% by weight with reference to Example 11 and Examples 14 and 15. A more preferred content of PVA is 3.5 to 7% by weight with reference to Examples 2, 9 and 10.
 (8)本実施形態の化粧剤カートリッジは、冷水又は温水を取り込む開口51c(流入口)と、開口51cに連通する内管53(通水路)と、化粧剤を収納する収納空間(収容室)を有するとともに、前記収納空間と前記内管53(通水路)を連通して内管53(通水路)を通過する冷水又は温水が前記収納空間を出入り可能な連通孔53c(連通部)を有する薬剤収容部54(薬剤収容室)を備え、薬剤収容部54には、上記シャワー用化粧剤100が収納されている。 (8) The cosmetic cartridge of this embodiment includes an opening 51c (inlet) for taking in cold water or hot water, an inner pipe 53 (water passage) communicating with the opening 51c, and a storage space (accommodating room) for storing the cosmetic. And a communication hole 53c (communication portion) through which the storage space and the inner pipe 53 (water passage) communicate with each other and cold water or hot water passing through the inner pipe 53 (water passage) can enter and exit the storage space. A medicine container 54 (drug container) is provided, and the shower cosmetic 100 is housed in the medicine container 54.
 この結果、本実施形態によれば、冷水や温水に対する一定の溶出量を確保できるとともに過度の溶解性を抑制して、固形形状の十分な持続性が得られる上記のシャワー用化粧剤を、好適に使用することができる。 As a result, according to this embodiment, the above-described shower cosmetic that can secure a certain amount of elution with respect to cold water or warm water and suppress excessive solubility and obtain sufficient sustainability of the solid shape is preferable. Can be used for
 次に、実施例及び比較例を挙げて前記実施形態をさらに具体的に説明する。 Next, the embodiment will be described more specifically with reference to examples and comparative examples.
 (実施例1及び比較例1、2)
 実施例1では、下記のa~dで区分される成分を、下記の製造方法により混合してシャワー用化粧剤を調製した。
(Example 1 and Comparative Examples 1 and 2)
In Example 1, the following cosmetic ingredients were mixed by the following production method to prepare a shower cosmetic.
 (a)
  PEG/PPG-150/35共重合体     92.15質量%
 (b1)  下記の3つの成分合計          1.7質量%
  1,2-オクタンジオール(保湿剤)、エチルヘキシルグリセリン(消臭剤、制汗剤)、パラオキシ安息香酸メチル(防腐剤)
 (b2)  下記の3つの成分合計          1.5質量%
  アミノ酸、コラーゲン、水
 (c)
  PVA                     3.65質量%
 (d)
  香料                       1.0質量%
 (製造方法)
 シャワー用化粧剤の製造方法について説明する。
(A)
PEG / PPG-150 / 35 copolymer 92.15% by mass
(B1) The following three components total 1.7% by mass
1,2-octanediol (humectant), ethylhexyl glycerin (deodorant, antiperspirant), methyl paraoxybenzoate (preservative)
(B2) The following three components total 1.5% by mass
Amino acids, collagen, water (c)
3.65% by mass of PVA
(D)
Fragrance 1.0% by mass
(Production method)
A method for producing a shower cosmetic will be described.
 上記区分a,b1,b2の材料を真空乳化釜に投入し、パドルで攪拌しながら真空状態で、80℃に加温し、均一に溶解する。なお、加温温度は本実施例では80℃であるが溶解するのに適切な温度であればよい。 The materials of the above sections a, b1, and b2 are put into a vacuum emulsification kettle, heated to 80 ° C. in a vacuum state while stirring with a paddle, and uniformly dissolved. Although the heating temperature is 80 ° C. in this embodiment, it may be any temperature suitable for dissolution.
 次に、区分cの材料を前記釜に投入し、パドルで攪拌しながら真空状態で、80℃まで加温して均一になるまで練り込む。前記加温温度は本実施例では80℃であるが均一に分散するのに適切な温度であればよい。 Next, the material of section c is put into the kettle, and while stirring with a paddle, it is heated to 80 ° C. in a vacuum state and kneaded until uniform. The heating temperature is 80 ° C. in this embodiment, but may be any temperature suitable for uniform dispersion.
 次に、パドルで攪拌しながら、真空状態で冷却を開始し、所定温度(例えば65℃程度)まで低下した時点で区分dの材料を投入し、パドルで攪拌しながら、冷却を継続して、前記所定温度よりもさらに低下した取り出し温度になった時点で取り出して、所定形状に成形し、シャワー用化粧剤を得る。このシャワー用化粧剤は、常温(例えば、25℃)では、固形状となる。なお、前記取り出し温度は、釜から取り出し易い温度(本実施例では65℃としている。)であれば限定されない。 Next, while stirring with a paddle, cooling is started in a vacuum state, and when the temperature falls to a predetermined temperature (for example, about 65 ° C.), the material of the section d is added, and while stirring with the paddle, cooling is continued. When the take-out temperature is lower than the predetermined temperature, it is taken out and molded into a predetermined shape to obtain a shower cosmetic. This shower cosmetic is solid at room temperature (for example, 25 ° C.). The take-out temperature is not limited as long as it is easy to take out from the pot (in this embodiment, 65 ° C.).
 シャワー用化粧剤の形状は、このシャワー用化粧剤を装填するカートリッジに収納できる形状であれば限定されるものではない。例えば、前記カートリッジに収納できるシャワー用化粧剤の形状としては、粉末、粒状、柱状、筒状等の適宜の形状を選択できる。 The shape of the shower cosmetic is not limited as long as it can be stored in a cartridge loaded with the shower cosmetic. For example, as the shape of the shower cosmetic that can be stored in the cartridge, an appropriate shape such as powder, granular shape, columnar shape, or cylindrical shape can be selected.
 一方、比較例1では、前記実施例1において、PEG/PPG-150/35共重合体に代えて、PEG/PPG-150/35共重合体のPEG単位と略同一の単位(ブロック)を有するPEGホモポリマーを使用した。 On the other hand, in Comparative Example 1, instead of the PEG / PPG-150 / 35 copolymer in Example 1, the PEG / PPG-150 / 35 copolymer has substantially the same unit (block) as the PEG unit. PEG homopolymer was used.
 また、比較例2では、実施例1において、PEG/PPG-150/35共重合体に代えて、PEG/PPG-150/35共重合体のPPG単位と略同一の単位(ブロック)を有するPPGホモポリマーを使用した。 In Comparative Example 2, PPG having substantially the same unit (block) as the PPG unit of PEG / PPG-150 / 35 copolymer in place of PEG / PPG-150 / 35 copolymer in Example 1. A homopolymer was used.
 なお、実施例と比較例とにおける化粧剤の形状は、同一の条件を維持するために、それぞれ筒状とした。 In addition, in order to maintain the same conditions, the shape of the cosmetic agent in the example and the comparative example was each cylindrical.
 (試験方法)
 実施例1及び比較例1、2のシャワー用化粧剤を、上記したカートリッジ50に充填し、シャワーヘッドより9L/分の流量で35℃、40℃及び45℃の温水を次のような試験サイクルで散水した。すなわち、一試験サイクルでは、1分間温水を通水し、1時間室温で放置し、次いで15分間温水を通水し、40℃で8時間乾燥後、カートリッジ50の質量を測定して、カートリッジ50内の化粧剤の減量(g)を測定し、溶出濃度(ppm)を求めた。その結果を表1及び図5に示した。
(Test method)
The shower cosmetic of Example 1 and Comparative Examples 1 and 2 is filled in the cartridge 50 described above, and hot water of 35 ° C., 40 ° C. and 45 ° C. is supplied from the shower head at a flow rate of 9 L / min as follows. Sprinkled with water. That is, in one test cycle, warm water is passed for 1 minute, allowed to stand at room temperature for 1 hour, then warm water is passed for 15 minutes, dried at 40 ° C. for 8 hours, the mass of the cartridge 50 is measured, and the cartridge 50 is measured. The weight loss (g) of the cosmetic agent was measured, and the elution concentration (ppm) was determined. The results are shown in Table 1 and FIG.
 図5において、◇は実施例1、□は比較例1及び△は比較例2を示す。 In FIG. 5, ◇ indicates Example 1, □ indicates Comparative Example 1 and Δ indicates Comparative Example 2.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
 表1及び図5に示したように、実施例1においては、温水の温度にかかわらず、シャワー用化粧剤の溶出濃度を13.4~36.9ppmという低い濃度に抑えることができた。一方、比較例1のPEGの場合には、温水の温度が35℃のとき溶出濃度が41.3ppmという高い溶出濃度を示し、45℃のときには溶出濃度が89.2ppmまで上昇した。また、比較例2のPPGの場合には、温水の温度が35℃のとき溶出濃度が22.9ppmという比較的低い溶出濃度を示したが、40℃のときには溶出濃度が80.3ppmまで急上昇し、45℃のときには溶出濃度が112.3ppmにまで到る結果となった。 As shown in Table 1 and FIG. 5, in Example 1, the elution concentration of the shower cosmetic was able to be suppressed to a low concentration of 13.4 to 36.9 ppm regardless of the temperature of the hot water. On the other hand, in the case of PEG of Comparative Example 1, the elution concentration was as high as 41.3 ppm when the temperature of the hot water was 35 ° C., and the elution concentration increased to 89.2 ppm when the temperature was 45 ° C. In the case of the PPG of Comparative Example 2, the elution concentration was 22.9 ppm when the temperature of hot water was 35 ° C., but the elution concentration rapidly increased to 80.3 ppm when the temperature was 40 ° C. When the temperature was 45 ° C., the elution concentration reached 112.3 ppm.
 次に、前記実施例1及び比較例1、2のシャワー用化粧剤に関し、シャワー使用中の体感(ぬめり感)、乾燥後の保湿感及び固形形状の持続性について測定し、それらの結果を表2に示した。 Next, for the shower cosmetics of Example 1 and Comparative Examples 1 and 2, the body sensation (smoothness) during use of the shower, the moisturizing feeling after drying, and the persistence of the solid shape were measured, and the results are shown. It was shown in 2.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
 表2に示したように、実施例1では、シャワー使用中の体感、乾燥後の保湿感及び固形形状持続性のいずれについても、水による膨潤はなく、良好な結果が得られた。一方、比較例1のPEGの場合、固形形状は持続できるが、温水に対する溶出濃度の調整ができず、シャワー使用中のぬめり感は得られず、乾燥後の保湿感も弱いものであった。また、比較例2のPPGの場合、シャワー使用中のぬめり感は得られるが、固形形状を持続できず、乾燥後の保湿感も得られなかった。 As shown in Table 2, in Example 1, there was no swelling due to water and good results were obtained for any of the bodily sensation during shower use, the moisturizing feeling after drying, and the solid shape sustainability. On the other hand, in the case of PEG of Comparative Example 1, although the solid shape can be maintained, the elution concentration with respect to warm water cannot be adjusted, the slimy feeling during shower use is not obtained, and the moisturizing feeling after drying is weak. In addition, in the case of PPG of Comparative Example 2, a slimy feeling during shower use was obtained, but the solid shape could not be maintained, and a moisturizing feeling after drying was not obtained.
 (膨潤性について)
 (実施例2~5)
 次に、実施例2~5について説明する。
(About swelling)
(Examples 2 to 5)
Next, Examples 2 to 5 will be described.
 実施例2~5のシャワー用化粧剤の成分は、下記の通りとした。 The ingredients of the cosmetics for showers in Examples 2 to 5 were as follows.
 (実施例2)
 (a)
  PEG/PPG-150/35共重合体       91.8質量%
 (b1)  下記の3つの成分合計            1.7質量%
 1,2-オクタンジオール、エチルヘキシルグリセリン、
 パラオキシ安息香酸メチル
 (b2)  下記の3つの成分合計            2.0質量%
  アミノ酸、コラーゲン、水
 (c)
  PVA                        3.5質量%
 (d)
  香料                         1.0質量%
 (実施例3)
 (a)
  PEG/PPG-150/35共重合体        92.8質量%
 (b1)  下記の3つの成分合計            1.7質量%
 1,2-オクタンジオール、エチルヘキシルグリセリン、
 パラオキシ安息香酸メチル
 (b2)  下記の3つの成分合計            2.0質量%
  アミノ酸、コラーゲン、水
 (c)
  PVA                       2.5質量%
 (d)
  香料                        1.0質量%
 (実施例4)
 (a)
  PEG/PPG-150/35共重合体      93.8質量%
 (b1)  下記の3つの成分合計            1.7質量%
 1,2-オクタンジオール、エチルヘキシルグリセリン、
 パラオキシ安息香酸メチル
 (b2)  下記の3つの成分合計            2.0質量%
  アミノ酸、コラーゲン、水
 (c)
  PVA                        1.5質量%
 (d)
  香料                         1.0質量%
 (実施例5)
 (a)
  PEG/PPG-150/35共重合体       94.8質量%
 (b1)  下記の3つの成分合計            1.7質量%
 1,2-オクタンジオール、エチルヘキシルグリセリン、
 パラオキシ安息香酸メチル
 (b2)  下記の3つの成分合計            2.0質量%
  アミノ酸、コラーゲン、水
 (c)
  PVA                        0.5質量%
 (d)
  香料                         1.0質量%
 上記実施例2~5のシャワー用化粧剤を、実施例1と同様の上記製造方法により調製した。これらの実施例2~5において、実施例1と同様に、前記試験方法で試験を行い、カートリッジ50内の膨潤状態を確認した。
(Example 2)
(A)
PEG / PPG-150 / 35 copolymer 91.8% by mass
(B1) The following three components total 1.7% by mass
1,2-octanediol, ethylhexylglycerin,
Methyl paraoxybenzoate (b2) The following three components total 2.0% by mass
Amino acids, collagen, water (c)
PVA 3.5% by mass
(D)
Fragrance 1.0% by mass
(Example 3)
(A)
PEG / PPG-150 / 35 copolymer 92.8% by mass
(B1) The following three components total 1.7% by mass
1,2-octanediol, ethylhexylglycerin,
Methyl paraoxybenzoate (b2) The following three components total 2.0% by mass
Amino acids, collagen, water (c)
PVA 2.5% by mass
(D)
Fragrance 1.0% by mass
Example 4
(A)
PEG / PPG-150 / 35 copolymer 93.8% by mass
(B1) The following three components total 1.7% by mass
1,2-octanediol, ethylhexylglycerin,
Methyl paraoxybenzoate (b2) The following three components total 2.0% by mass
Amino acids, collagen, water (c)
PVA 1.5 mass%
(D)
Fragrance 1.0% by mass
(Example 5)
(A)
PEG / PPG-150 / 35 copolymer 94.8% by mass
(B1) The following three components total 1.7% by mass
1,2-octanediol, ethylhexylglycerin,
Methyl paraoxybenzoate (b2) The following three components total 2.0% by mass
Amino acids, collagen, water (c)
PVA 0.5 mass%
(D)
Fragrance 1.0% by mass
The shower cosmetics of Examples 2 to 5 were prepared by the same production method as in Example 1. In Examples 2 to 5, as in Example 1, the test was performed by the test method, and the swelling state in the cartridge 50 was confirmed.
 上記した実施例2では、シャワー使用中の体感、乾燥後の保湿感及び固形形状持続性のいずれについても、水による膨潤はなく、実施例1と同様に良好な結果が得られた。 In Example 2 described above, there was no swelling due to water in any of the bodily sensation during use of the shower, the moisturizing feeling after drying, and the solid shape sustainability, and good results were obtained as in Example 1.
 実施例3~実施例5では、実施例1、実施例2に比して、若干の膨潤が見られたが比較例1、比較例2よりはその膨潤は、軽いものであった。 In Examples 3 to 5, some swelling was observed as compared to Examples 1 and 2, but the swelling was lighter than those in Comparative Examples 1 and 2.
 (実施例6~8)
 実施例6~8では、PEG/PPG共重合体のみを用いてシャワー用化粧剤を調製した。
(Examples 6 to 8)
In Examples 6 to 8, shower cosmetics were prepared using only the PEG / PPG copolymer.
 すなわち、実施例6ではPEG/PPG-150/35共重合体のみを用い、実施例7ではPEG/PPG-200/70共重合体のみを用い、実施例8ではPEG/PPG-150/35共重合体50質量%とPEG/PPG-200/70共重合体50質量%の混合物のみを用い、シャワー用化粧剤を調製した。 That is, only PEG / PPG-150 / 35 copolymer was used in Example 6, only PEG / PPG-200 / 70 copolymer was used in Example 7, and PEG / PPG-150 / 35 copolymer was used in Example 8. A shower cosmetic was prepared using only a mixture of 50% by mass of a polymer and 50% by mass of a PEG / PPG-200 / 70 copolymer.
 得られたシャワー用化粧剤について、実施例1と同様にしてカートリッジ50内のシャワー用化粧剤の減量(g)から溶出濃度(ppm)を求め、その結果を表3に示した。 For the shower cosmetic obtained, the elution concentration (ppm) was determined from the weight loss (g) of the shower cosmetic in the cartridge 50 in the same manner as in Example 1, and the results are shown in Table 3.
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
 表3に示したように、実施例6においては、化粧剤の溶出濃度を45℃で少し高いものの、35℃及び40℃では27.0~27.6ppmという低い濃度に抑えることができた。実施例7においては、温度にかかわらず、化粧剤の溶出濃度を5.6~10.7ppmという低い濃度に抑えることができた。実施例8においても、温度にかかわらず、化粧剤の溶出濃度を13.1~23.0ppmという十分低い濃度に抑えることができた。 As shown in Table 3, in Example 6, although the elution concentration of the cosmetic was slightly high at 45 ° C, it could be suppressed to a low concentration of 27.0 to 27.6 ppm at 35 ° C and 40 ° C. In Example 7, the elution concentration of the cosmetic agent could be suppressed to a low concentration of 5.6 to 10.7 ppm regardless of the temperature. Also in Example 8, regardless of the temperature, the elution concentration of the cosmetic agent could be suppressed to a sufficiently low concentration of 13.1 to 23.0 ppm.
 また、実施例6~8のシャワー用化粧剤に関し、シャワー使用中の体感(ぬめり感)、乾燥後の保湿感及び固形形状持続性について実施例1と同様にして測定した。その結果、使用中の体感は、実施例1とほぼ同等であった。 Further, regarding the cosmetics for showers of Examples 6 to 8, the body feeling (smooth feeling) during use of the shower, the moisturizing feeling after drying, and the solid shape sustainability were measured in the same manner as in Example 1. As a result, the experience during use was almost the same as in Example 1.
 (実施例9~13)
 実施例9~13では、PEG/PPG共重合体と、PVAとを用い、PVAの含有量を変化させてシャワー用化粧剤を調製した。
(Examples 9 to 13)
In Examples 9 to 13, shower cosmetics were prepared using a PEG / PPG copolymer and PVA and changing the PVA content.
 すなわち、実施例9ではPEG/PPG-150/35共重合体93質量%とPVA7質量%とを用い、実施例10ではPEG/PPG-150/35共重合体96.5質量%とPVA3.5質量%とを用い、実施例11ではPEG/PPG-150/35共重合体99質量%とPVA1質量%とを用い、実施例12ではPEG/PPG-150/35共重合体99.5質量%とPVA0.5質量%とを用い、実施例13ではPEG/PPG-150/35共重合体84質量%とPVA16質量%とを用い、シャワー用化粧剤を調製した。 That is, in Example 9, 93% by mass of PEG / PPG-150 / 35 copolymer and 7% by mass of PVA were used, and in Example 10, 96.5% by mass of PEG / PPG-150 / 35 copolymer and PVA 3.5%. In Example 11, 99% by mass of PEG / PPG-150 / 35 copolymer and 1% by mass of PVA were used, and in Example 12, PEG / PPG-150 / 35 copolymer was 99.5% by mass. In Example 13, a cosmetic for shower was prepared using 84% by mass of PEG / PPG-150 / 35 copolymer and 16% by mass of PVA.
 得られたシャワー用化粧剤について、実施例1と同様にしてカートリッジ50内のシャワー用化粧剤の減量(g)から溶出濃度(ppm)を求め、その結果を表4に示した。 For the obtained shower cosmetic, the elution concentration (ppm) was determined from the reduction (g) of the shower cosmetic in the cartridge 50 in the same manner as in Example 1, and the results are shown in Table 4.
Figure JPOXMLDOC01-appb-T000004
Figure JPOXMLDOC01-appb-T000004
 表4に示したように、実施例9~11及び実施例13においては、化粧剤の溶出濃度が6.1~43.3ppmであり、PEG/PPG-150/35共重合体のみを用いた実施例6に比べて低い濃度に抑えることができた。実施例12においては、化粧剤の溶出濃度が22.1~51ppmであり、実施例6に比べて十分に低い濃度に抑えることができなかった。 As shown in Table 4, in Examples 9 to 11 and Example 13, the elution concentration of the cosmetic agent was 6.1 to 43.3 ppm, and only the PEG / PPG-150 / 35 copolymer was used. Compared to Example 6, the concentration could be suppressed to a low level. In Example 12, the elution concentration of the cosmetic agent was 22.1 to 51 ppm, and could not be suppressed to a sufficiently low concentration as compared with Example 6.
 また、実施例9~13のシャワー用化粧剤に関し、シャワー使用中の体感(ぬめり感)、乾燥後の保湿感及び固形形状持続性について実施例1と同様にして測定した。その結果、実施例9~11では、使用中の体感は、実施例6とほぼ同等であった。実施例12では、使用後の保湿感及び固形形状持続性が実施例6に比べて向上し、実施例13では、固形形状持続性が実施例6に比べて向上した。 Further, regarding the cosmetics for showers of Examples 9 to 13, the body feeling (smooth feeling) during use of the shower, the moisturizing feeling after drying, and the solid shape sustainability were measured in the same manner as in Example 1. As a result, in Examples 9 to 11, the feeling during use was almost the same as that in Example 6. In Example 12, the moisturizing feeling after use and the solid shape sustainability were improved as compared to Example 6, and in Example 13, the solid shape sustainability was improved as compared to Example 6.
 従って、シャワー用化粧剤中に配合されたPVAは水に対するシャワー用化粧剤の溶解性を高め、特に温水に対する溶解性を高めることができるとともに、PVAの含有量は好ましくは0.7~15質量%であることが示された。 Therefore, the PVA blended in the shower cosmetic can enhance the solubility of the shower cosmetic in water, in particular the solubility in hot water, and the PVA content is preferably 0.7 to 15 mass. %.
 (実施例14及び15)
 実施例14及び15では、PEG/PPG共重合体と、PVAと、美容剤とを用いてシャワー用化粧剤を調製した。
(Examples 14 and 15)
In Examples 14 and 15, a shower cosmetic was prepared using a PEG / PPG copolymer, PVA, and a cosmetic agent.
 すなわち、実施例14ではPEG/PPG-150/35共重合体86質量%と、PVA13質量%と、美容剤1質量%とを用いてシャワー用化粧剤を調製した。実施例15ではPEG/PPG-200/70共重合体86質量%と、PVA13質量%と、美容剤1質量%とを用いてシャワー用化粧剤を調製した。美容剤としては、プロパンジオール(湿潤剤)、カプリルグリコール(防腐剤)、エチルヘキシルグリセリン(消臭剤、制汗剤)、パラオキシ安息香酸メチル(防腐剤)の混合物を使用した。 That is, in Example 14, a shower cosmetic was prepared using 86% by mass of a PEG / PPG-150 / 35 copolymer, 13% by mass of PVA, and 1% by mass of a cosmetic agent. In Example 15, a shower cosmetic was prepared using 86% by mass of a PEG / PPG-200 / 70 copolymer, 13% by mass of PVA, and 1% by mass of a cosmetic agent. As a cosmetic agent, a mixture of propanediol (wetting agent), capryl glycol (preservative), ethylhexyl glycerin (deodorant, antiperspirant), and methyl parahydroxybenzoate (preservative) was used.
 得られたシャワー用化粧剤について、実施例1と同様にしてカートリッジ50内のシャワー用化粧剤の減量(g)から溶出濃度(ppm)を求め、その結果を表5に示した。 For the shower cosmetic obtained, the elution concentration (ppm) was determined from the weight loss (g) of the shower cosmetic in the cartridge 50 in the same manner as in Example 1, and the results are shown in Table 5.
Figure JPOXMLDOC01-appb-T000005
Figure JPOXMLDOC01-appb-T000005
 表5に示したように、実施例14においては、化粧剤の溶出濃度が10.2~25.6ppmであり、PEG/PPG-150/35共重合体のみを用いた実施例6に比べて十分に低い濃度に抑えることができた。実施例15においては、化粧剤の溶出濃度が3.1~10.3ppmであり、PEG/PPG-200/70共重合体のみを用いた実施例7に比べて低い濃度に抑えることができた。 As shown in Table 5, in Example 14, the elution concentration of the cosmetic agent was 10.2 to 25.6 ppm, compared to Example 6 using only the PEG / PPG-150 / 35 copolymer. The concentration was sufficiently low. In Example 15, the elution concentration of the cosmetic agent was 3.1 to 10.3 ppm, and could be suppressed to a lower concentration than Example 7 using only the PEG / PPG-200 / 70 copolymer. .
 また、実施例14及び15のシャワー用化粧剤に関し、シャワー使用中の体感(ぬめり感)、乾燥後の保湿感及び固形形状持続性について実施例1と同様にして測定した。その結果、実施例14及び15では、使用中の体感及び使用後の保湿感は、それぞれ実施例6及び7と同等であったが、いずれも膨潤性が若干高くなり、固形形状持続性は低下した。 Further, regarding the cosmetics for showers of Examples 14 and 15, the body feeling (smooth feeling) during use of the shower, the moisturizing feeling after drying, and the solid shape sustainability were measured in the same manner as in Example 1. As a result, in Examples 14 and 15, the bodily sensation during use and the moisturizing feeling after use were the same as those in Examples 6 and 7, respectively, but both have slightly higher swellability and lower solid shape sustainability. did.
 10…シャワーヘッド、11…ヘッド部、12…グリップ部、51…カートリッジケース、51c…開口(流入口)、52…ダックビル弁、53…内管(通水路)、53c…連通孔(連通部)、54…薬剤収容部(化粧剤収納部)、100…シャワー用化粧剤。 DESCRIPTION OF SYMBOLS 10 ... Shower head, 11 ... Head part, 12 ... Grip part, 51 ... Cartridge case, 51c ... Opening (inlet), 52 ... Duck bill valve, 53 ... Inner pipe (water passage), 53c ... Communication hole (communication part) 54... Medicine container (cosmetic agent container), 100. Shower cosmetic.

Claims (13)

  1. ポリオキシエチレングリコール(以下、PEGという)/ポリオキシプロピレングリコール(以下、PPGという)共重合体を必須成分として含むシャワー用化粧剤。 A cosmetic for shower comprising a polyoxyethylene glycol (hereinafter referred to as PEG) / polyoxypropylene glycol (hereinafter referred to as PPG) copolymer as an essential component.
  2. ポリビニルアルコール(以下、PVAという)を含む請求項1に記載のシャワー用化粧剤。 The shower cosmetic according to claim 1, comprising polyvinyl alcohol (hereinafter referred to as PVA).
  3. 美容剤を含む請求項1又は請求項2に記載のシャワー用化粧剤。 The cosmetic for shower according to claim 1 or 2, comprising a beauty agent.
  4. 前記PEG/PPG共重合体、PVA又は美容剤は、均一に分散され、常温にて固形状である請求項1から請求項3のいずれか1項に記載のシャワー用化粧剤。 The cosmetic for shower according to any one of claims 1 to 3, wherein the PEG / PPG copolymer, PVA, or beauty agent is uniformly dispersed and is solid at room temperature.
  5. 前記PEG/PPG共重合体におけるPEGとPPGとの質量比は、(150~200)/(35~70)である請求項1から請求項4のいずれか1項に記載のシャワー用化粧剤。 The shower cosmetic according to any one of claims 1 to 4, wherein a mass ratio of PEG to PPG in the PEG / PPG copolymer is (150 to 200) / (35 to 70).
  6. 前記PVAは、ケン化度が86~90モル%の部分ケン化PVAである請求項2から請求項5のいずれか1項に記載のシャワー用化粧剤。 The shower cosmetic according to any one of claims 2 to 5, wherein the PVA is a partially saponified PVA having a saponification degree of 86 to 90 mol%.
  7. 前記PVAの含有量は、0.7~15質量%である請求項2から請求項6のいずれか1項に記載のシャワー用化粧剤。 The shower cosmetic according to any one of claims 2 to 6, wherein a content of the PVA is 0.7 to 15% by mass.
  8. シャワーヘッド内に収容される化粧剤カートリッジであって、
     前記カートリッジは、冷水又は温水を取り込む流入口と、
     前記流入口に連通する通水路と、
     化粧剤を収納する収納室を有するとともに、前記収納室と前記通水路を連通して前記通水路を通過する冷水又は温水が前記収納室を出入り可能な連通部を有する化粧剤収納部を備え、
     前記化粧剤収納部には、請求項1から請求項7のいずれか1項に記載のシャワー用化粧剤が収納されている化粧剤カートリッジ。
    A cosmetic cartridge housed in a showerhead,
    The cartridge includes an inlet for taking in cold water or hot water;
    A water passage communicating with the inlet,
    A cosmetic storage section having a storage section for storing a cosmetic agent, and a communication section that allows the cold water or hot water passing through the water passage to communicate with the storage chamber and the water passage to enter and exit the storage chamber;
    A cosmetic cartridge in which the cosmetic for shower according to any one of claims 1 to 7 is stored in the cosmetic storage.
  9. 請求項8に記載の化粧剤カートリッジであって、
     筒状のカートリッジケースと、そのカートリッジケースの軸心位置に貫設された内管とを備えるとともに、前記カートリッジケースと内管との間に薬剤収容室を設け、前記内管の管壁に複数の連通孔を透設し、内管の下流側端部にストレーナを設けた化粧剤カートリッジ。
    The cosmetic cartridge according to claim 8,
    A cylindrical cartridge case and an inner tube penetrating at the axial center of the cartridge case are provided, and a medicine storage chamber is provided between the cartridge case and the inner tube, and a plurality of tubes are provided on the tube wall of the inner tube. The cosmetic cartridge is provided with a strainer at the downstream end of the inner tube.
  10. 前記連通孔を前記内管の軸方向の全長にわたって配列し、前記薬剤収容室内には固形の水溶性の薬剤を収容するとともに、薬剤収容室内において水溶性の薬剤の下流側には空間を形成した請求項9に記載の化粧剤カートリッジ。 The communication holes are arranged over the entire length in the axial direction of the inner tube, and a solid water-soluble drug is stored in the drug storage chamber, and a space is formed on the downstream side of the water-soluble drug in the drug storage chamber. The cosmetic cartridge according to claim 9.
  11. 前記ストレーナを下流側に向かって膨出させた請求項9又は10に記載の化粧剤カートリッジ。 The cosmetic cartridge according to claim 9 or 10, wherein the strainer bulges toward the downstream side.
  12. 前記カートリッジケースの上流側端部に、前記内管の下流側端部の内部に連通する弁室を設け、その弁室内には逆止弁を設けた請求項9から請求項11のいずれか一項に記載の化粧剤カートリッジ。 The valve chamber which communicates with the inside of the downstream end portion of the inner pipe is provided at the upstream end portion of the cartridge case, and a check valve is provided in the valve chamber. The cosmetic cartridge according to Item.
  13. 前記弁室とカートリッジケースとの間に前記薬剤収容室の上流側端部を配置するとともに、逆止弁の周囲を弁室の周壁によって閉鎖した請求項12に記載の化粧剤カートリッジ。 The cosmetic cartridge according to claim 12, wherein an upstream end of the medicine storage chamber is disposed between the valve chamber and the cartridge case, and the periphery of the check valve is closed by a peripheral wall of the valve chamber.
PCT/JP2013/082052 2013-03-11 2013-11-28 Cosmetic for shower use, and cosmetic cartridge WO2014141543A1 (en)

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