JP2012017273A - Stain removing agent for skin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stain removing agent for skin capable of removing skin stains such as an oil stain on hands without using water nor generating surfactant-containing waste water.SOLUTION: The invention relates to the stain removing agent for skin including the surfactant and powdery crystalline cellulose (water-insoluble) and formed into a thermally reversible gel or paste, or foam state by adding a thickener (gelling agent) to a liquid state diluted by a volatile aqueous solvent. The stain removing agent for skin is powdered or agglomerated by the volatilization of the aqueous solvent by attaching to the skin of hands or the like to which the oil stain is adhered and rubbing the hands or the like.

Description

  The present invention relates to a skin dirt remover. More specifically, in factory and construction sites where water supply facilities are not nearby and water washing is difficult, it is possible to easily remove skin stains, especially oil stains on hands, etc. without water, making it suitable as an on-site hand cleaner The present invention relates to a cleansing agent for skin.

  Conventionally, on-site sites in factories, etc., oily hands and the like have been washed with a skin cleaner (hand cleaner) in hand and a faucet of a water supply facility (water supply facility).

  However, there is a problem in that waste water containing detergent (surfactant) is generated and the load on the purification equipment is increased. In addition, there is a problem that the oil stain on the operation portion (stopper) of the faucet becomes severe.

  Furthermore, when there is no water supply nearby and an attempt is made to change clothes at the site, there are problems such as soiling clothes for changing clothes.

  For this reason, there has been a demand for the development of a skin dirt remover that can easily remove skin dirt on hands and the like even when there is no water supply nearby.

  However, the present inventors do not know a skin dirt remover that can easily remove skin dirt such as oil stains on hands.

  It should be noted that, according to the publication text search (published patent publication), the search item is “summary + claims” and the search keyword is “detergent AND cellulose AND surfactant AND skin OR body OR body”. Hits (searched on June 29, 2010).

  Among them, Patent Documents 1 to 4 whose title of the invention is “skin cleaning composition” are listed as references. Naturally, the inventions related to these “skin cleaning compositions” are all premised on washing with water.

  Patent Documents 1 to 4 contain cellulose or cationized cellulose as a water-soluble polymer, but are different from the water-insoluble or hardly soluble powder crystalline cellulose in the present invention.

JP 2008-31162 A JP 2006-193484 A Japanese Patent Laid-Open No. 2005-60298 JP 2004-262838 A

  In view of the above, the present invention provides a skin stain removing agent that can remove oil stains such as oil stains on hands without using water, and as a result, does not generate surfactant-containing waste water. For the purpose.

  In order to solve the above-mentioned problems, the present inventors have made extensive efforts to develop and, as a result, have arrived at a skin dirt removing agent having the following constitution.

A thickener (gelling agent) is added to a liquid containing a surfactant and powdered crystalline cellulose (water-insoluble) and diluted with a volatile aqueous solvent to form a thermoreversible gel or paste. In the form of foam or foam,
The aqueous solvent is volatilized and powdered or agglomerated by attaching to the skin and rubbing with a hand or the like.

  The skin dirt removing agent of another aspect has the following constitution.

A liquid containing a surfactant and powdered crystalline cellulose, diluted with a volatile aqueous solvent and held in a liquid form, is retained in the sponge body so that it can be exuded by compression,
The aqueous solvent is volatilized by adhering exudate to the skin and rubbing with a hand or the like, whereby the aqueous solvent is pulverized or agglomerated.

Hereinafter, the above-described components and compositions of the present invention, and usage modes will be described.
(1) The surfactant that is an essential component of the skin dirt removing agent of the present invention is not particularly limited, such as nonionic, cationic, anionic, and zwitterionic.

  Among these, nonionic surfactants are desirable from the relationship with other essential components. This is because nonionic surfactants have excellent miscibility with powdered crystalline cellulose, thickeners, and volatile aqueous solvents, as well as high cloud point and excellent storage stability (low temperature stability). . For example, sorbitan fatty acid esters (such as sorbitan monostearate and sorbitan sesquioleate), glycerin fatty acids (such as glyceryl monostearate), propylene glycol fatty acid esters (such as propylene glycol monostearate), hydrogenated castor oil derivatives, glycerin Alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerin fatty acid esters (POE-glycerin mono) Isostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octane) Ludodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl ether, etc.), pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), tetronics, POE castor oil / cured Castor oil derivatives (POE castor oil, POE hydrogenated castor oil, etc.), sucrose fatty acid esters, alkyl glucosides and the like can be mentioned. In particular, the hydrophobic group raw material is higher alcohol (carbon number 8-20) and the hydrophilic group raw material is polyoxyethylene (added mole number: 8-18), for example, propylene glycol polyoxyethylene dodecyl ether (PPG laureth) Is preferred.

  (2) Similarly, powdered crystalline cellulose is a product obtained by lightly hydrolyzing cellulose with an acid and using powdered (water-insoluble or hardly water-soluble) cellulose.

  (3) Similarly, the thickener (gelator) may be a synthetic thickener or a natural thickener (thickening polysaccharide). Among these, a synthetic thickener (carboxyvinyl polymer; carbomer) whose viscosity can be easily adjusted is desirable, but natural thickeners exemplified below can also be used.

  Microcrystalline cellulose (MMC), microfibrous cellulose (MFC), guar gum, tara gum, quince seed, carrageenan, galactan, gum arabic, pectin, mannan, starch, xanthan gum, curdlan, methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methylhydroxy Propylcellulose, chondroitin sulfate, dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, tragacanth gum, keratan sulfate, chondroitin, mucoitin sulfate, hydroxyethyl guar gum, carboxymethyl guar gum, dextran, kerato sulfate, locust bean gum, succino Glucan, caronic acid, chitin, chitosan, carboxymethyl chitin, agar, polyvinyl alcohol , Polyvinyl pyrrolidone, carboxyvinyl polymer, sodium polyacrylate, polyethylene glycol, and bentonite.

  In particular, those having a high OH group value are desirable because they are excellent in miscibility with surfactants and powdered cellulose.

  (4) As the volatile aqueous solvent, a solvent selected from ethanol water having a concentration of 30 to 80%, preferably 50 to 75%, is used from the standpoint of harmlessness and versatility. If the concentration is too low, it is difficult to exhibit the required volatility. If the concentration is too high, a problem arises in storage stability (easily volatilized during storage).

  (5) In addition to the above essential components, a moisturizer, preservative, and pH adjuster are appropriately added.

    As the humectant, glycerin or diethylene glycol can be usually used.

    Although it does not specifically limit as an antiseptic | preservative, Phenoxyethanol, a propyl paraben, a butyl paraben, etc. can be used conveniently.

    The pH adjuster is not particularly limited as long as it does not irritate the skin. For example, organic amine compounds can be used, and specific examples include tetraethylamine.

  Next, the preferred composition range of each component is as follows.

Ethanol water (concentration: 50-75%) 60-85%
Powdered crystalline cellulose 10-20%
Surfactant (PPG2 Laureth 8) 1-5%
Moisturizer (glycerin) 1-5%
Thickener (carbomer) 0.1-2.0%
Preservative 0.1-2.0%

(6) Preparation method When the mixture having the above composition is stirred, a gelling agent is contained, and therefore, the mixture becomes a gel or paste due to an action such as hydrogen bonding. And those things are enclosed in an extrusion type container or a push type container. In addition, you may hold | maintain those things so that it can ooze out by compression to a sponge body.

  Then, it is placed in a place where oil stains are likely to occur on the factory site, and when it is desired to remove the oil stains on the hands, they are attached to the hands and rubbed together.

  Then, the oil component is dissolved and removed by the action of the surfactant and absorbed into the gel body in which the skeleton is formed of powdered cellulose, and further, the liquid component volatilizes in a very short time due to the exothermic action of rubbing. Then, the oil component and the like adhering to the hand is held in the cellulose powder and is pulverized or agglomerated (so-called eraser residue).

  In addition, in order to set it as the form of foam aerosol, it is preferable that the soil dirt remover of this invention contains a vaporization component. Examples of the vaporizing component include carbon dioxide gas, liquefied natural gas, and dimethyl ether. In particular, liquefied natural gas is preferable, and its preferable content is 2 to 10% by mass.

  According to the formulation shown below, the paste-like skin dirt remover of the present invention was prepared. Then, the paste-like skin dirt remover was filled in a push-type plastic container.

Ethanol water (concentration 60%) 77.5%
Powdered crystalline cellulose 15%
Surfactant (PPG2 Laureth 8) 3%
Moisturizer (glycerin) 3%
Thickener (carbomer) 0.5%
Preservative 1.0%

  Then, the skin dirt remover filled from the push-type container was ejected to the left hand of both hands to which oil dirt adhered by field work, and about 2 cc was adhered. Thereafter, when both hands were rubbed together, the paste-like stain removing agent was powdered (debris of eraser), and the oil stains on the hands could be removed cleanly.

Claims (7)

A thickening agent (gelling agent) is added to a liquid that contains a surfactant and water-insoluble or hardly soluble powdered crystalline cellulose and diluted with a volatile aqueous solvent to form a thermoreversible gel. Or a paste or foam,
A skin dirt remover wherein the aqueous solvent is volatilized and powdered or agglomerated by attaching to the skin and rubbing with a hand or the like.   2. The skin dirt remover according to claim 1, further comprising any one or more of a humectant, a preservative, and a pH adjuster.   The surfactant is a nonionic surfactant, the thickener is a carboxyvinyl polymer, the aqueous solvent is ethanol water having a concentration of 30 to 80%, and is a thermoreversible gel or paste. The skin dirt remover according to claim 1 or 2, wherein   4. The skin according to claim 3, wherein the composition is powdered crystalline cellulose: 10 to 20% by mass, surfactant: 1 to 5% by mass, and thickener: 0.1 to 2.0% by mass. Dirt remover. A surfactant and water-insoluble or sparingly soluble powdered crystalline cellulose, which is diluted with a volatile aqueous solvent and made liquid, is held in a sponge body so that it can be exuded by compression,
A skin dirt remover characterized in that the aqueous solvent is volatilized and powdered or agglomerated by adhering exudate to the skin and rubbing with a hand or the like.   The skin dirt remover according to claim 5, further comprising any one or more of a humectant, a preservative, and a pH adjuster. 6. The surfactant according to claim 5, wherein the surfactant is a nonionic surfactant, the thickener is a carboxyvinyl polymer, and the aqueous solvent is ethanol water having a concentration of 30 to 80%. 6. A skin dirt remover according to 6.