WO2020054570A1

WO2020054570A1 - Wet sheet

Info

Publication number: WO2020054570A1
Application number: PCT/JP2019/034955
Authority: WO
Inventors: 由樹渡邊; 有喜子蛭間; 勇太間中; 薫森下; 山田　俊一
Original assignee: 株式会社資生堂
Priority date: 2018-09-12
Filing date: 2019-09-05
Publication date: 2020-03-19
Also published as: CN112672725B; JP7419245B2; CN112672725A; JPWO2020054570A1

Abstract

[Problem] To suppress sulfur odor in a wet sheet in which a sheet containing rayon is impregnated with a liquid composition. [Solution] A wet sheet including a sheet that contains rayon and a liquid composition impregnated into the sheet, wherein the liquid composition contains, relative to the total weight of the liquid composition, 1 × 10^-6 to 2 × 10^-2 mol/L of at least one sulfur-odor-reducing substance selected from the group consisting of organic zinc compounds, organic magnesium compounds, and inorganic magnesium compounds.

Description

Wet sheet

The present invention relates to a wet sheet obtained by impregnating a sheet containing rayon with a liquid composition.

ウエ A wet sheet in which a liquid composition is impregnated in a sheet-like nonwoven fabric or the like is widely used for wiping the skin or the like, or as a wet mask or the like. For example, Patent Document 1 describes a wet tissue having a sterilizing or healing power, in which a wiping base contains an aqueous solution of magnesium in an amount of 0.2 to 6.0% by weight. Further, Patent Document 2 discloses an agent which contains N, N-diethyltoluamide as a pest repellent component and 5 to 50% by weight of zinc paraphenolsulfonate as an alcohol-soluble antiperspirant component. Which is impregnated into a nonwoven fabric having

On the other hand, nonwoven fabrics and the like impregnated with the liquid composition include natural fibers such as cotton, hemp and wool, cellulosic fibers such as rayon and acetate, polyethylene, polypropylene, polyurethane, polyacryl, polyester, polyvinylidene chloride, and polyvinyl chloride. Various materials are known, such as cotton, rayon, cellulose, polyester, polyolefin, cotton, vinylon, and synthetic fibers such as nylon, but various advantages such as moisture absorption, moisture release, elasticity, and heat resistance. , Rayon may be used in some cases.

Rayon is made by reacting natural cellulose such as wood pulp and bamboo with alkali (caustic soda) and carbon disulfide to produce a cellulose derivative. This is dissolved in an alkaline aqueous solution to form a stock solution. It is extruded and stretched to coagulate and regenerate fibrous material (cellulose) (referred to as wet spinning method). Although carbon disulfide, which is an impurity, is removed by washing with water in the refining process, the remaining sulfide has a problem that explosive odor due to sulfur is generated when water is present. In order to solve such a problem, Patent Document 3 discloses a wet sheet in which a nonwoven fabric containing rayon contains 1 to 1000 ppm of 1-p-menthen-8-thiol and / or benzothiazole. I have.

In general, as a substance deemed to have a deodorizing effect, for example, Non Patent Literature 1 discloses zinc oxide as a substance having a sweat odor suppressing effect, and Patent Literature 4 discloses magnesium oxide having an oily smell generated from a body trunk. It is listed as an inhibitor. Patent Document 5 discloses that a reactive deodorant containing 0.1 to 40% by weight of an organozinc compound is directly sprayed on an odor source in fields such as sewage treatment, garbage treatment, and industrial waste treatment such as industry and agriculture. Alternatively, it is described that the compound has an excellent deodorizing effect on hydrogen sulfide, methyl mercaptan, dimethyl sulfide, sulfur dioxide and the like by spraying. Further, Patent Document 6 discloses that a composition containing a combination of a zinc compound, a yonone ketone terpene derivative and a mint flavor has an effect of preventing oral odor, and zinc phenolsulfonate suppresses fermentation and putrefaction odor that occur in the oral cavity. It is described as having an effect.

Japanese Patent No. 3153497 Japanese Patent No. 4348670 Japanese Patent No. 5598174 Japanese Patent No. 5170398 Japanese Patent Publication No. 6-47004 Japanese Patent Publication No. 7-098737

However, 1-p-menten-8-thiol and benzothiazole described in Patent Document 3 cannot always say that the effect of reducing sulfur odor is sufficient, and since these substances themselves have a fragrance, a wet sheet is not used. If it is desired to use it as a fragrance, it cannot be used, and if a fragrance is used, the effect on the fragrance must be taken into consideration. In addition, since the deodorant effect described in Non-Patent Document 1 and Patent Documents 4 and 6 does not suppress sulfur odor, it is unknown whether or not sulfur odor is effective. The organozinc compound described in Patent Literature 5 is directly sprayed or sprayed on an odor source, and is completely different in usage mode. In addition, the deodorant substance that can be selected must have good dispersibility in the manufacturing process and uniformity at the time of impregnation filling from the manufacturing process of impregnating the sheet with the liquid composition. Is also necessary.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a wet sheet in which a liquid composition is impregnated into a sheet containing rayon, in which a sulfur odor is suppressed.

The wet sheet of the present invention is a sheet containing rayon, a wet sheet containing a liquid composition impregnated in the sheet,
The liquid composition contains at least one sulfur odor reducing substance selected from the group consisting of an organic zinc compound, an organic magnesium compound and an inorganic magnesium compound in an amount of 1 × 10 ⁻⁶ to 2 × 10 ^{− with} respect to the total amount of the liquid composition. ^It contains ² mol / L.

The sulfur odor reducing substance preferably has a solubility in water at 25 ° C. of 1 × 10 ⁻⁶ mol / L or more.

The sheet is preferably a non-woven fabric.

レー The rayon content of the sheet is preferably 50% by mass or more.

The sulfur odor reducing substance is preferably at least one selected from the group consisting of zinc phenolsulfonate, magnesium chloride and magnesium ascorbyl phosphate, and the content thereof is 1 × 10 4 with respect to the total amount of the liquid composition. It is preferably ^-5 to 1 × 10 ⁻² mol / L.

The wet sheet can be used for wiping.

The wet sheet of the present invention is a wet sheet containing a sheet containing rayon and a liquid composition impregnated in the sheet, wherein the liquid composition is selected from the group consisting of an organic zinc compound, an organic magnesium compound and an inorganic magnesium compound. The liquid sheet contains at least one sulfur odor reducing substance in an amount of 1 × 10 ⁻⁶ to 2 × 10 ⁻² mol / L based on the total amount of the liquid composition. In addition to being able to suppress, it is possible to ensure dispersibility and uniformity in the manufacturing process.

Hereinafter, the wet sheet of the present invention will be described in detail.
The wet sheet of the present invention is a wet sheet containing a sheet containing rayon and a liquid composition impregnated in the sheet, wherein the liquid composition is selected from the group consisting of an organic zinc compound, an organic magnesium compound and an inorganic magnesium compound. The liquid composition contains at least one sulfur odor reducing substance in an amount of 1 × 10 ⁻⁶ to 2 × 10 ⁻² mol / L based on the total amount of the liquid composition.

[Sheet]
The sheet containing rayon is not particularly limited as long as it is a sheet containing fibers containing rayon, and in addition to a nonwoven fabric, a fiber woven fabric, Japanese paper, a porous film, or a foam sheet having continuous pores. Or a single layer or a laminate thereof. These single layers or laminates may be covered with fibers by flocking, or may have a modified surface characteristic or a meshed shape by secondary processing such as embossing of unevenness. .
The shape of the sheet is not particularly limited, and examples thereof include a square, a rectangle, an ellipse, a circle, a heart, a semicircle, a semiellipse, a trapezoid, and a face.

The thickness of the sheet is not particularly limited and can be appropriately selected depending on the intended purpose. When the sheet is a nonwoven fabric, the thickness is preferably 0.1 to 10 mm, more preferably 0.1 to 5 mm. Also, the basis weight is preferably 10 ~ 80g / m ^2, more preferably 30 ~ 50g / m ^2. When the basis weight is 10 g / m ² or more, it does not break when used, and when it is 80 g / m ² or less, it is possible to suppress an increase in cost.

レー The content of rayon in the sheet is preferably 50 to 100% by mass, more preferably 70 to 100% by mass, based on its own weight before impregnation of the sheet. Other materials include hydrophilic fibers, hydrophobic fibers, and the like. One type may be used in combination with rayon, or two or more types may be used in appropriate combination. Examples of the hydrophilic fibers include natural cellulosic fibers such as cotton, pulp, and hemp; regenerated cellulosic fibers such as Tencel; regenerated fibers such as chitin, alginic acid fibers, and collagen fibers. Examples of the hydrophobic fiber include fibers made of polyolefin resin such as polyethylene (PE) and polypropylene (PP), fibers made of polyester resin such as polyethylene terephthalate, fibers made of polyamide resin such as nylon, and polyacrylonitrile resin. Fiber, a fiber made of polyvinyl ethanol resin, a fiber made of polyurethane resin, and the like.

Above all, hydrophobic fibers are preferable, and fibers made of a polyolefin resin such as polyethylene (PE) and polypropylene (PP) are preferable. The mass ratio of the material composition in the sheet is preferably rayon / hydrophobic fiber = 90/10 to 50/50, more preferably 80/20 to 70/30.

A commercially available sheet can be used as the sheet. If the sheet is a nonwoven fabric, various nonwoven fabrics commercially available from, for example, Daiwabo Polytech Co., Ltd., Futamura Chemical Co., Ltd., and Sansho Paper Industry Co., Ltd. can be used.

[Liquid composition]
(Sulfur odor reducing substance)
The liquid composition contains at least one sulfur odor reducing substance selected from the group consisting of organic zinc compounds, organic magnesium compounds and inorganic magnesium compounds. Here, the solubility of each of the organic zinc compound, the organic magnesium compound, and the inorganic magnesium compound in water at 25 ° C. is preferably 1 × 10 ⁻⁶ mol / L or more, more preferably 1 × 10 ⁻⁵ mol / L. L or more, more preferably 1 × 10 ⁻⁴ mol / L or more, particularly preferably 1 × 10 ⁻³ mol / L or more. When the solubility in water at 25 ° C. is 1 × 10 ⁻⁶ mol / L or more, the powder is less likely to aggregate and the productivity is improved.

Preferred examples of the organic zinc compound include zinc phenolsulfonate, zinc benzoate, and zinc p-tert-butyl benzoate.
Examples of the organomagnesium compound include magnesium acetate, magnesium propionate, magnesium lactate, magnesium citrate, magnesium EDTA, magnesium malate, magnesium gluconate, magnesium benzoate, magnesium benzenesulfonate, magnesium toluenesulfonate, xylenesulfonic acid. Magnesium, magnesium cumene sulfonate, magnesium ascorbyl phosphate and the like can be mentioned.
Examples of the inorganic magnesium compound include magnesium chloride, magnesium sulfate, magnesium carbonate, magnesium phosphate and the like.
From the viewpoint of versatility and the like, zinc phenol sulfonate, magnesium chloride or magnesium ascorbyl phosphate is desirable. These sulfur odor reducing substances may be used alone or in an appropriate combination of two or more.

The sulfur odor reducing substance is contained in an amount of 1 × 10 ⁻⁶ to 2 × 10 ⁻² mol / L, preferably 1 × 10 ⁻⁵ to 1 × 10 ⁻² mol / L, based on the total amount of the liquid composition. Preferably it is 1 × 10 ⁻⁵ to 2 × 10 ⁻³ mol / L, particularly 5 × 10 ⁻⁵ to 2 × 10 ⁻⁴ mol / L. When two or more sulfur odor reducing substances are contained, the total amount of the contained sulfur odor reducing substances is meant.
When the amount of the sulfur odor reducing substance is 1 × 10 ⁻⁶ mol / L or more based on the total amount of the liquid composition, the sulfur odor can be effectively reduced. Further, when the amount of the sulfur odor reducing substance is 2 × 10 ⁻² mol / L or less based on the total amount of the liquid composition, the offset of the fragrance contained in the liquid composition can be suppressed. Further, even when the liquid composition does not contain a fragrance, the metal ion is contained in the liquid composition by the fact that the sulfur odor reducing substance is 2 × 10 ⁻² mol / L or less based on the total amount of the liquid composition. In addition, it is possible to prevent the generation of insoluble substances with other components contained in the wet sheet, and to reduce the removal of the fragrance when the fragrance such as perfume is applied to the application target site of the wet sheet.

(Other substances contained in the liquid composition)
The amount of the liquid composition impregnated in the sheet is preferably 1 to 10 times the weight of the sheet before impregnation. In the case of a wiping sheet, it is preferably 1 to 5 times, more preferably 2 to 4 times, particularly preferably about 3.5 times. When it is at least 1 time, a sufficient liquid is released at the time of use, and when it is used for wiping, at 5 times or less, an appropriate liquid remains on the skin after use, resulting in non-sticky usability.

Liquid compositions include components usually used in external preparations for skin such as cosmetics and pharmaceuticals, such as water, humectants, surfactants, liquid oils and fats, hydrocarbons, higher fatty acids, higher alcohols, esters, silicones, and water-soluble polymers. , Thickeners, ultraviolet absorbers, sequestering agents, lower alcohols, polyhydric alcohols, sugars, amino acids, organic amines, polymer emulsions, solubilizers, fresheners, pH adjusters, skin nutrition, vitamins, oxidation An inhibitor, an antioxidant aid, a coloring agent, a fragrance and the like can be appropriately compounded as needed.

Examples of the humectant include polyethylene glycol, propylene glycol, dipropylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12. -Hydroxystearate, alkylene oxide derivative, sodium lactate, bile salt, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, lycopodium extract, yarrow extract, melilot extract, etc. Is mentioned. When a humectant is included, the feeling of use is better, and it is suitable for blending or removing cosmetics.

Other incorporable components include, for example, collagen, elastin, phytocollage, preservatives (eg, ethyl paraben, butyl paraben); anti-inflammatory agents (eg, glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, allantoin, etc.); Agents (for example, placenta extract, saxifrage extract, arbutin and the like); various extracts (for example, oak, spinach, sicon, peonies, assembly, birch, sage, loquat, carrot, aloe, mallow, iris, grape, yoquinin, Loofah, lily, saffron, senkyu, ginger, hypericum, ononis, garlic, capsicum, chimpanzee, corn, seaweed, etc., activators (eg, royal jelly, photosensitizer, cholesterol derivatives, etc.); blood circulation promoters (eg, noni) Acid valenylamide, nicotinic acid benzyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, gingerone, canthari tincture, ictamol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandate, cinnarizine, tolazoline, Acetylcholine, verapamil, cepharanthin, γ-oryzanol, etc.); antiseborrheic agents (eg, sulfur, thiantol, etc.); anti-inflammatory agents (eg, tranexamic acid, thiotaurine, hypotaurine, etc.).

[Manufacture of wet sheet]
In the wet sheet of the present invention, the method of impregnating the sheet with the liquid composition can be performed by a known means, and examples thereof include a dropping method, a spraying method, a pressure method, and a dipping method. One or a plurality of sheets are used as they are or folded, and the sheets are impregnated with the liquid composition.

It is preferable that the impregnated sheet is immediately enclosed in a highly airtight container, especially in an airtight bag, which does not transmit light, such as an aluminum laminate package or a package internally coated with polyethylene terephthalate (PET). More preferably, it is hermetically loaded. In the wet sheet of the present invention, the sulfur odor reducing substance contained in the liquid composition is 2 × 10 ⁻² mol / L or less even when the sulfur odor reducing substance is a metal salt of zinc or magnesium. The formation of other components and insoluble substances contained in the liquid composition can be prevented.

[Usage form]
The use form of the wet sheet of the present invention is not particularly limited, and examples thereof include a face sweat wipe sheet, a body sweat wipe sheet, a body deodorant sheet, a foot wipe sheet, a nursing wipe sheet, and a sebum wipe sheet. Wipe sheet, skin care sheet impregnated with cosmetics such as lotion and milky lotion, impregnated with cosmetics such as serum, face (whole or cheeks, eyes, mouth, etc.), arm It can be used as a mask (pack) sheet or the like that is used by being in close contact with the entire or local site such as a part, a leg, a chest, an abdomen, and a neck, and then peeled off after standing for an appropriate time.

Next, the present invention will be described in more detail with reference to examples.
According to the formulations shown in Tables 1 and 2, the liquid compositions of Examples and Comparative Examples were prepared by a conventional method. Each liquid composition was added to a non-woven fabric containing 80% rayon (rayon: hydrophobic fiber (PP / PE (50/50)) = 80:20, basis weight 40 g / m ² ) in an amount of about 3 times the mass of the non-woven fabric. The liquid composition was impregnated.

(Evaluation)
(Sulfur odor reduction effect)
The impregnated nonwoven fabric was evaluated for sulfur odor by three persons blindly after 4 hours according to the following criteria.
A: Sulfur smell is not felt. B: Sulfur smell is hardly felt. C: Sulfur smell is not felt, but the quality of perfume is slightly changed. D: Sulfur smell is felt.

(Dispersion stability of powder)
After stirring the liquid compositions used in the examples and comparative examples, one minute after stopping the stirring, the dispersion state of the powder was visually evaluated according to the following criteria.
A: Dissolved and not dispersed as a solid B: Uniformly dispersed C: Precipitate observed at the bottom of beaker The evaluation results are shown in Tables 1 and 2 together with the formulation of the liquid composition. In the table, PPG is an abbreviation for polypropylene glycol, and PEG is an abbreviation for polyethylene glycol.

As shown in Table 1, the zinc phenolsulfonates of Examples 1 and 4 to 7, the magnesium chloride of Example 2, and the ascorbyl magnesium phosphate of Example 3 all have good sulfur odor reduction effects, and the powders are also dispersed. It had good stability and excellent manufacturability. On the other hand, as shown in Table 2, the sulfur odor could not be reduced only by the fragrance (Comparative Examples 1 and 2), and the zinc oxide of Comparative Example 3 had a good sulfur odor reduction effect, but the dispersion stability of the powder was good. Was considered to be inferior in manufacturability. In Comparative Examples 4 to 6, since the dispersion stability of the powder was good, it was considered that the productivity was good, but the sulfur odor reducing effect was not recognized.

Table 3 shows examples of formulations of other liquid compositions.

Claims

A sheet containing rayon, a wet sheet containing a liquid composition impregnated in the sheet,
The liquid composition comprises at least one sulfur odor reducing substance selected from the group consisting of an organozinc compound, an organomagnesium compound and an inorganic magnesium compound in an amount of 1 × 10 −6 to 2 × based on the total amount of the liquid composition. Wet sheet containing 10 -2 mol / L.
2. The wet sheet according to claim 1, wherein the sulfur odor reducing substance has a solubility in water at 25 ° C. of 1 × 10 −6 mol / L or more.
ウエ The wet sheet according to claim 1 or 2, wherein the sheet is a nonwoven fabric.
4. The wet sheet according to claim 1, wherein the rayon content of the sheet is 50% by mass or more.
The wet sheet according to any one of claims 1 to 4, wherein the sulfur odor reducing substance is at least one selected from the group consisting of zinc phenolsulfonate, magnesium chloride and magnesium ascorbyl phosphate.
6. The wet sheet according to claim 5, wherein the content of the sulfur odor reducing substance is 1 × 10 −5 to 1 × 10 −2 mol / L with respect to the total amount of the liquid composition.
The wet sheet according to any one of claims 1 to 6, wherein the wet sheet is for wiping.