CN112672725B

CN112672725B - Wet sheet

Info

Publication number: CN112672725B
Application number: CN201980059102.1A
Authority: CN
Inventors: 渡边由树; 蛭间有喜子; 间中勇太; 森下薰; 山田俊一
Original assignee: Shiseido Co Ltd
Current assignee: Shiseido Co Ltd
Priority date: 2018-09-12
Filing date: 2019-09-05
Publication date: 2023-09-19
Anticipated expiration: 2039-09-05
Also published as: WO2020054570A1; JPWO2020054570A1; JP7419245B2; CN112672725A

Abstract

The present invention aims to suppress sulfur odor in a wet sheet obtained by impregnating a sheet containing rayon with a liquid composition. The solution is a wet sheet comprising: tablet comprising rayon, and liquid composition impregnated in tablet, the liquid composition containing 1×10 of total amount of liquid composition ^‑6 ～2×10 ^‑2 A sulfur odor reducing substance selected from at least 1 of an organozinc compound, an organomagnesium compound, and an inorganic magnesium compound in mol/L.

Description

Wet sheet

Technical Field

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

Background

Wet sheets obtained by impregnating a sheet-like nonwoven fabric with a liquid composition are widely used as a material for wiping skin or the like, or as a wet mask or the like. For example, patent document 1 describes a wet wipe having sterilizing and curing effects, which is obtained by containing 0.2 to 6.0 wt% of an aqueous magnesium solution in a wiping base material. Patent document 2 describes a substance obtained by impregnating a non-woven fabric having a contaminated wiping property with a chemical agent containing N, N-diethyltoluamide as a pest repellent component and 5 to 50 wt% of zinc p-phenolsulfonate as an antiperspirant component having alcohol solubility.

On the other hand, as nonwoven fabrics and the like impregnated with the liquid composition, natural fibers such as cotton, hemp, wool and the like, cellulose fibers such as rayon and acetate fibers, fiber cottons such as polyethylene, polypropylene, polyurethane, polyacrylic, polyester, polyvinylidene chloride, polyvinyl chloride, nylon and the like, rayon, cellulose, polyester, polyolefin, cotton, vinylon and the like are known, but rayon may be used in some cases because of its various advantages such as hygroscopicity, elasticity, heat resistance and the like.

Rayon is produced by reacting natural raw material cellulose such as wood pulp and bamboo with alkali (caustic soda) and carbon disulfide to produce a cellulose derivative, dissolving the cellulose derivative in an aqueous alkali solution to prepare a stock solution, extruding the stock solution from a die into an aqueous sulfuric acid solution, and elongating the stock solution to solidify and regenerate cellulose (called a wet spinning method). The carbon disulfide as an impurity is removed by washing with water in the refining step, but there is a problem in that if water is present, the remaining sulfide gives off smell derived from the smell of sulfur powder. In order to solve such a problem, patent document 3 describes a nonwoven fabric comprising rayon as a wet sheet containing 1 to 1000ppm of 1-p-menthene-8-thiol and/or benzothiazole.

In general, as a substance considered to have a deodorizing effect, for example, non-patent document 1 describes zinc oxide as a substance having a sweat smell suppressing effect, and patent document 4 describes magnesium oxide as a substance suppressing a fat smell generated from a body trunk portion. Patent document 5 describes that a reactive deodorant containing 0.1 to 40% by weight of an organozinc compound has an excellent deodorizing effect on hydrogen sulfide, methyl mercaptan, dimethyl sulfide, sulfur dioxide, and the like in the fields of sewage treatment, garbage treatment, industrial waste treatment such as industrial/agricultural, and the like, by spraying or spreading directly on an odor source. Further, patent document 6 describes that a composition containing a combination of a zinc compound, an ionone terpene derivative, and a mint flavor has an effect of deodorizing the oral cavity, and zinc phenolsulfonate has an effect of suppressing fermentation and spoilage taste occurring in the oral cavity.

Prior art literature

Patent literature

Patent document 1: japanese patent No. 3153497

Patent document 2: japanese patent No. 4348670

Patent document 3: japanese patent No. 5598174

Patent document 4: japanese patent No. 5170398

Patent document 5: japanese patent publication No. 6-47004

Patent document 6: japanese patent publication No. 7-098737

Non-patent literature

Non-patent document 1: shentian No. II, et al, japanese cosmetic technology, meeting , vol23, p217 (1989)

Disclosure of Invention

Problems to be solved by the invention

However, the effect of reducing the odor of 1-p-menthene-8-thiol or benzothiazole sulfur described in patent document 3 is not necessarily sufficient, and these substances have their own fragrance, and therefore cannot be used when a wet sheet is intended to be free of perfume, and in the case of using perfume, the influence on the perfume must be considered, and therefore, the wet sheet has a side face that is not easy to use. Further, since the deodorizing effect described in non-patent document 1 and patent documents 4 and 6 does not suppress sulfur odor, it is unclear whether or not the deodorizing effect has an effect on sulfur odor. The organozinc compound described in patent document 5 is directly sprayed or spread onto an odor source, and its use form is quite different. Further, since the optional deodorizing substance is impregnated into the sheet with the liquid composition, it is also required to have good dispersibility in the manufacturing process and uniformity in the impregnation and filling, and it is also required to study the deodorizing substance from the side.

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 sulfur odor is suppressed in a wet sheet obtained by impregnating a sheet containing rayon with a liquid composition.

Means for solving the problems

The wet sheet of the present invention comprises: a sheet comprising rayon, and a liquid composition impregnated in the sheet,

wherein the liquid composition contains 1×10 of the total amount of the liquid composition ^-6 ～2×10 ^-2 At least 1 sulfur odor reducing substance selected from the group consisting of organozinc compounds, organomagnesium compounds, and inorganic magnesium compounds in mol/L.

The solubility of the sulfur odor reducing substance in water at 25℃is preferably 1X 10 ^-6 mol/L or more.

The sheet is preferably a nonwoven fabric.

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

The sulfur odor reducing substance is preferably at least 1 selected from zinc phenolsulfonate, magnesium chloride and magnesium ascorbyl phosphate, and its content is preferably 1×10 relative to the total amount of the liquid composition ^-5 ～1×10 ^-2 mol/L。

The wet sheet may be for wiping.

ADVANTAGEOUS EFFECTS OF INVENTION

The wet sheet of the present invention comprises: tablet comprising rayon, and liquid composition impregnated in tablet, the liquid composition containing 1×10 of total amount of liquid composition ^-6 ～2×10 ^-2 At least 1 sulfur odor reducing substance selected from the group consisting of organozinc compounds, organomagnesium compounds, and inorganic magnesium compounds in mol/L, so that sulfur odor of the wet sheet can be effectively suppressed, and dispersibility and uniformity can be ensured in the manufacturing process.

Detailed Description

Hereinafter, the wet sheet of the present invention will be described in detail.

The wet sheet of the present invention comprises: tablet comprising rayon, and liquid composition impregnated in tablet, the liquid composition containing 1×10 of total amount of liquid composition ^-6 ～2×10 ^-2 At least 1 sulfur odor reducing substance selected from the group consisting of organozinc compounds, organomagnesium compounds, and inorganic magnesium compounds in mol/L.

[ sheet ]

The sheet containing rayon is not particularly limited as long as it contains fibers containing rayon, and may be a woven cloth of fibers, paper, porous film, foam sheet having continuous pores, or a single layer or a laminate thereof, other than nonwoven fabric. The single layer or the laminate may be a material having a surface characteristic changed by secondary processing, such as a material further coated with fibers by flocking or embossed with irregularities, a material having a net shape, or the like.

The shape of the sheet is not particularly limited, and examples thereof include square, rectangle, oval, round, heart, semicircle, semi-oval, trapezoid, face shape, and the like.

The thickness of the sheet is not particularly limited and may be appropriately selected depending on the purpose, but in the case where the sheet is a nonwoven fabric, it is preferably 0.1 to 10mm, more preferably 0.1 to 5mm. Further, the order of the components is preferably 10 to 80g/m ² More preferably 30 to 50g/m ² . If the pay-per-view is 10g/m ² The above-mentioned components are not broken when used, and the content of the components is 80g/m ² In the following, the cost can be suppressed.

The content of the rayon in the sheet is preferably 50 to 100% by mass, and more preferably 70 to 100% by mass, based on the weight of the sheet before impregnation. Examples of the other materials include hydrophilic fibers and hydrophobic fibers, and only 1 type may be used in combination with the rayon, or 2 or more types may be used in combination as appropriate. Examples of the hydrophilic fibers include natural cellulose fibers such as cotton, pulp, and hemp; regenerated cellulose fibers such as tenascal; regenerated fibers such as chitin, alginic acid fibers and collagen fibers. Examples of the hydrophobic fibers include fibers made of polyolefin resins such as Polyethylene (PE) and polypropylene (PP), fibers made of polyester resins such as polyethylene terephthalate, fibers made of polyamide resins such as nylon, fibers made of polyacrylonitrile resins, fibers made of polyvinyl alcohol resins, and fibers made of polyurethane resins.

Among them, hydrophobic fibers are preferable, and fibers made of polyolefin resins 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.

The sheet may be a commercially available product, and if it is a nonwoven fabric, various nonwoven fabrics commercially available from, for example, dow duct, febrile bush, febrile chemical, san Zhao paper, etc. may be used.

[ liquid composition ]

(Sulfur odor reducing substance)

The liquid composition contains at least 1 sulfur odor reducing substance selected from the group consisting of organozinc compounds, organomagnesium compounds, and inorganic magnesium compounds. Here, the solubility of each of the organozinc compound, organomagnesium compound, inorganic magnesium compound in water at 25℃is preferably 1X 10 ^-6 mol/L or more, more preferably 1X 10 ^-5 mol/L or more, more preferably 1X 10 ^-4 The molar ratio is more than 1X 10, particularly preferably ^-3 mol/L or more. By a solubility in water of 1X 10 at 25 DEG C ^-6 The powder is less likely to agglomerate and the productivity is improved by mol/L or more.

The organic zinc compound may preferably be zinc phenolsulfonate, zinc benzoate, zinc p-tert-butylbenzoate or the like.

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, magnesium xylenesulfonate, magnesium isopropylbenzene sulfonate, and magnesium ascorbyl phosphate.

Examples of the inorganic magnesium compound include magnesium chloride, magnesium sulfate, magnesium carbonate, and magnesium phosphate.

From the viewpoint of versatility and the like, zinc phenolsulfonate, magnesium chloride or magnesium ascorbyl phosphate is desirable. These sulfur odor reducing substances may be used alone in an amount of 1 or 2 or more kinds thereof may be used in an appropriate combination.

The sulfur odor reducing substance is contained in an amount of 1×10 based on the total amount of the liquid composition ^-6 ～2×10 ^-2 mol/L, preferably 1X 10 ^-5 ～1×10 ^-2 mol/L, more preferably 1X 10 ^-5 ～2×10 ^-3 mol/L, in particular 5X 10 ^-5 ～2×10 ^-4 mol/L. In addition, when the sulfur odor reducing substance is contained in an amount of 2 or more, the total amount of sulfur odor reducing substances contained is referred to.

The total amount of the sulfur odor reducing substance relative to the liquid composition was 1×10 ^-6 Above mol/L, sulfur odor can be effectively reduced. In addition, the total amount of the sulfur odor reducing substance relative to the liquid composition was 2×10 ^-2 The mol/L or less can inhibit the cancellation of the perfume contained in the liquid composition. In addition, even in the case where the liquid composition does not contain a perfume, the total amount of the sulfur odor reducing substance to the liquid composition is 2×10 ^-2 The amount of the metal ions is not more than the mol/L, and the formation of insoluble substances with other components contained in the liquid composition can be prevented, and in the case of applying a perfume such as perfume to the application site of the wet sheet, the removal of the perfume can be reduced.

(other substances contained in the liquid composition)

The amount of the liquid composition impregnated into the sheet is preferably 1 to 10 times the weight of the sheet before impregnation. In the case of the wiping sheet, it is preferably 1 to 5 times, more preferably 2 to 4 times, particularly about 3.5 times. When the amount is 1 or more times, sufficient liquid is discharged during use, and when the amount is 5 or less times in the case of wiping, moderate liquid remains on the skin after use, and thus, non-sticky usability is obtained.

The liquid composition may be mixed with components used for external preparations for skin such as usual cosmetics and medicines, for example, water, moisturizers, surfactants, liquid oils and fats, hydrocarbons, higher fatty acids, higher alcohols, esters, silicones, water-soluble polymers, thickeners, ultraviolet absorbers, sequestering agents, lower alcohols, polyols, sugars, amino acids, organic amines, polymer emulsions, solubilizing agents, coolants, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidant auxiliaries, colorants, perfumes, and the like, as needed.

Examples of the humectant include polyethylene glycol, propylene glycol, dipropylene glycol, glycerin, 1, 3-butanediol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucin sulfate, carpronic acid, atelocollactone-12-hydroxystearate, alkylene oxide derivatives, sodium lactate, bile acid salts, dl-pyrrolidone formate, short chain soluble collagen, diglycerol (EO) PO adduct, silk reeling extract, tragacanth extract, and lutetium extract. If a humectant is contained, the feeling of use is better, and the cosmetic is suitably dissolved or removed.

Examples of other components that can be blended include collagen, elastin, phyto collagen, and preservatives (ethyl parahydroxybenzoate, butyl parahydroxybenzoate, etc.); anti-inflammatory agents (e.g., glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, sabinol, allantoin, etc.); whitening agents (e.g., placenta extract, saxifrage extract, arbutin, etc.); various extracts (e.g., phellodendron, coptis chinensis, lithospermum root, paeonia lactiflora, swertia japonica, birch, sage, loquat, carrot, aloe, mallow, iris, grape, coix seed, luffa, lily, saffron, ligusticum wallichii, ginger, hypericum perforatum, formononeti, garlic, capsicum, dried orange peel, angelica, seaweed, etc.), activators (e.g., royal jelly, biotin, cholesterol derivatives, etc.); blood circulation promoting agents (e.g., vanillylamide nonanoate, benzyl nicotinate, beta-butoxyethyl nicotinate, capsaicin, zingibrone, cantharides tincture, ichthyol, tannic acid, alpha-borneol, tocopheryl nicotinate, inositol hexanicotinate, cyclic mandelate, cinnarizine, tolazoline, acetylcholine, verapamil, stephanine, gamma-oryzanol, etc.); anti-seborrheic agents (e.g., sulfur, dimethylthianthrene, etc.); anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.), and the like.

[ production of wet sheet ]

In the wet sheet of the present invention, the impregnation method of the liquid composition into the sheet can be carried out by a known means, and examples thereof include a dropping method, a spraying method, a pressing method, and an impregnation method. The sheet is directly or folded, etc., 1 or more sheets are used, and the liquid composition is impregnated therein.

The impregnated sheet is preferably immediately sealed in a container having high air tightness, and particularly preferably sealed and packed in a bag or the like having good air tightness, which does not pass light, such as an aluminum laminate package or a package having an inner surface coated with polyethylene terephthalate (PET). The wet sheet of the present invention contains a sulfur odor reducing substance of 2X 10 because the sulfur odor reducing substance is a metal salt of zinc or magnesium ^-2 The molar ratio is not more than the molar ratio, and thus the metal ions can be prevented from forming insoluble matters with other components contained in the liquid composition.

[ use form ]

The wet sheet of the present invention is not particularly limited in its use form, and may be used, for example, as a facial wipe, a body deodorant sheet, a foot wipe, a nursing wipe, a sebum wipe, or the like, as a skin care sheet impregnated with a cosmetic such as a lotion or an emulsion, as a skin care sheet impregnated with a cosmetic such as a cosmetic liquid, and as a mask (pack) sheet which is used by being brought into close contact with the whole or partial parts of the face (whole, or cheek, eye, mouth corner, etc.), wrist, leg, chest, abdomen, neck, etc., and peeled off after being left for a suitable period of time.

Examples

The present invention will be described in further detail by examples.

Liquid compositions of examples and comparative examples were prepared by a conventional method according to the formulations shown in tables 1 and 2. For each liquid composition, a nonwoven fabric containing 80% rayon (rayon: hydrophobic fibers (PP/PE (50/50))=80:20 was impregnated with a liquid composition in an amount of about 3 times the mass of the nonwoven fabric, and 40g/m was paid ² )。

(evaluation)

(Sulfur odor reduction Effect)

For the nonwoven fabric impregnated as described above, sulfur odor was evaluated by 3 persons after 4 hours by blind measurement based on the following criteria.

A: no sulfur smell is perceived

B: is not easy to feel sulfur smell

C: although no sulfur odor was perceived, the texture of the fragrance was slightly changed

D: feel sulfur smell

(dispersion stability of powder)

After stirring the liquid compositions used in examples and comparative examples, the state of dispersion of the powder was evaluated by visual observation based on the following criteria after the stirring was stopped for 1 minute.

A: dissolve but not disperse as a solid

B: uniformly disperse

C: sediment was observed at the bottom of the beaker

The evaluation results are shown in tables 1 and 2 together with the prescription of the liquid composition. In the table, PPG is polypropylene glycol, and PEG is an abbreviation for polyethylene glycol.

As shown in table 1, the zinc phenolsulfonate of examples 1, 4 to 7, the magnesium chloride of example 2, and the magnesium ascorbyl phosphate of example 3 all had good sulfur odor reducing effect, and the powder was also excellent in dispersion stability and manufacturability. On the other hand, as shown in table 2, sulfur odor cannot be reduced by the perfume alone (comparative examples 1 and 2), but zinc oxide of comparative example 3 is considered to have poor dispersion stability of powder, though the sulfur odor reduction effect is good. In comparative examples 4 to 6, the powder was excellent in dispersion stability, and therefore, the manufacturability was considered to be excellent, but the effect of reducing sulfur odor was not confirmed.

Table 3 shows examples of formulations of other liquid compositions.

Claims

1. A wet sheet comprising: a sheet comprising rayon, and a liquid composition impregnated in the sheet,

wherein the liquid composition contains 1×10 of the total amount of the liquid composition ^-6 ～2×10 ^-2 At least 1 sulfur odor reducing substance selected from the group consisting of zinc phenolsulfonate, magnesium chloride and magnesium ascorbyl phosphate in a mol/L.

2. The wet sheet according to claim 1, wherein the sulfur odor reducing substance has a solubility in water of 1 x 10 at 25 °c ^-6 mol/L or more.

3. The wet sheet according to claim 1 or 2, which is a nonwoven fabric.

4. The wet sheet according to claim 1, wherein the rayon content of the sheet is 50 mass% or more.

5. The wet sheet according to claim 1, wherein the sulfur odor reducing substance is contained in an amount of 1X 10 based on the total amount of the liquid composition ^-5 ～1×10 ^-2 mol/L。

6. The wet sheet according to claim 1 or 2, which is for wiping.