JPH0475960B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention relates to a cleaning composition for puffs. PRIOR ART Puffs are used for applying foundation. Puffs are relatively expensive and are typically washed and used repeatedly. Soap or household liquid detergents are generally used for cleaning, but puffs that are stained with oil-based foundations are clogged with pigment and are difficult to remove, so they are eventually thrown away for aesthetic reasons. This tendency is remarkable for NBR-based puffs and cross-linked PVA-based puffs. At present, no cleaning agent specifically designed for this puff has been developed. Problems to be Solved by the Invention The object of the present invention is to develop a cleaning composition that can easily remove stains from foundation puffs. The present inventors discovered that conventionally known to have high detergency,
Various detergents, such as kitchen detergents, laundry detergents,
Attempts have been made to clean puffs stained with oil-based foundations using various surfactants most commonly used in toilets, furniture, window glass, automobile cleaners, etc., but most surfactants, In particular, anionic surfactants such as alkylbenzene sulfonates and alkyl sulfates, which are usually highly evaluated for their high detergency, can remove oily stains from puffs, but they have little effect on colored stains. There was found. Means to Solve the Problem The inventors of the present invention repeatedly studied a huge number of surfactants, and found that by using a certain type of nonionic surfactant, stains on puffs, which was thought to be almost impossible, were solved. It has been found that it can be removed extremely easily and almost completely. That is, the present inventor has proposed (a) a nonionic surfactant with an HLB of 8 to 14 selected from polyoxyethylene alkyl ether and polyoxyethylene alkyl phenyl ether having a side chain alkyl group having 12 to 14 carbon atoms, and (b) A puff cleaning composition containing as an essential component a water-soluble solvent selected from lower alcohols, alkylene glycols, and polyalkylene glycols, and substantially free of ionic surfactants. In the present invention, the nonionic surfactant has an average
Selected from the range HLB8 and HLB14. The average means that, for example, a nonionic surfactant with an HLB of 6 and an HLB of 16 may be blended to obtain one with an HLB of 10. In the present invention, active agents other than nonionic surfactants, such as anionic surfactants, cationic surfactants, and amphoteric surfactants, are not preferred. These cannot be used in combination with nonionic surfactants to obtain better results. A preferred group of nonionic surfactants that can be used in the present invention are polyoxyethylene alkyl ethers derived from side chain-containing alcohols having 12 to 14 carbon atoms, especially secondary alcohols. Whether the number of carbon atoms is greater or less than this, the puff's effectiveness in removing colored stains is reduced. When using a secondary _C12 - _C14 alcohol, particularly good results are obtained when the number of moles of ethylene oxide added is in the range of 4-8. A second example that is particularly preferred in the present invention is a polyoxyethylene alkyl phenyl ether type nonionic surfactant, and particularly good results are obtained with ethylene oxide adducts of nonylphenol or octylphenol. The appropriate number of moles of ethylene oxide added is 4 to 8 moles. A small amount of other nonionic surfactants may be added to the present invention. Examples are esters of polyethylene glycol (hereinafter referred to as PEG) and higher fatty acids,
Sorbitan alkylate or its ethylene oxide adduct. Examples of esters of PEG and higher fatty acids include esters of PEG (average molecular weight 200) and oleic acid. These esters do not necessarily have a sufficient cleaning effect compared to the alkyl ethers and alkyl phenyl ethers, but they may be used in combination with alkyl ethers and alkyl phenyl ethers because they cause less roughness on hands. Examples of other preferred nonionic surfactants that can be used in combination include fatty acid diethanolamide type surfactants. Particularly good results are obtained with coconut oil fatty acid diethanolamide (1:1 type). Fatty acid diethanolamide type surfactants are preferred because they are mild to the skin. The detergent for puffs of the present invention contains a suitable water-soluble solvent in addition to the above-mentioned nonionic surfactant. 100% nonionic surfactants usually form a gel when mixed with water, making them difficult to use. and polyalkylene glycols, such as polyethylene glycols such as diethylene glycol and triethylene glycol, dipropylene glycol, tripropylene glycol, and the like. Of course, other suitable additives such as cleaning aids (builders), dyes, fragrances, preservatives, fungicides, antibacterial agents, etc. may also be added. The cleaning agent of the present invention can also be used to clean puffs used in emulsion-type foundations, cake-type foundations, etc., but these can be relatively easily cleaned with ordinary detergents. Therefore, the cleaning composition of the present invention is particularly suitable for cleaning oily foundations. Effects of the Invention By using the cleaning composition for puffs of the present invention, puffs that could not be sufficiently cleaned with conventional household detergents, soaps, etc. can be cleaned very easily and almost completely. The present invention will be explained below with reference to Examples. Examples 1 to 6 and Comparative Examples 1 to 21 Half of a commercially available NBR-based puff was contaminated with an oil-based foundation of the following formulation, and after being left for one day, the results shown in Table-
Make a 0.5% aqueous solution of the surfactant shown in 1 (in the case of a nonionic surfactant, a 50% solution of isopropyl alcohol) in terms of surfactant, and add 500 ml (30 to 40%
℃) for 3 minutes. Table 1 shows the test results.
Shown below. Oil-based foundation prescription weight parts (base) Liquid paraffin 29.3 Isopropyl palmitate 15.0 Microcrystal wax 5.0 Ozokerite 5.0 Candelilla wax 0.5 (Pigment) Titanium oxide 20.0 Kaolin 15.0 Talc 5.0 Red iron oxide 1.6 Yellow iron oxide 3.0 Black iron oxide 0.4 (Fragrance) Fragrance 0.2 In Table 1, POE is polyoxyethylene residue,
PEG represents a polyethylene glycol residue, n represents the number of moles, and MW represents the molecular weight. ◎: Appears to have almost all dirt removed. ○: Some dirt remained. △: Significant amount of dirt remained. ×: Almost the same in appearance as before cleaning.

【table】

[Table] Examples 6 to 25 Using the combination active agent shown in Table 2 (hereinafter referred to as a cleansing agent), half of a commercially available NBR-based puff was contaminated with an oil-based foundation of the above formulation, and then washed for one day. After leaving it for a while, apply 2g of the cleaning agent shown in Table 2, massage it for 20 seconds, and then soak it in 500ml of warm water (30-40℃) for 30 minutes.
The skin was massaged for seconds and rinsed with running warm water (30-40°C) for 45 seconds. The test results are shown in Table-2. The evaluation was the same as in Example 1.

【table】

【table】

Claims (1)

[Scope of Claims] 1 (a) A nonionic surfactant with an HLB of 8 to 14 selected from polyoxyethylene alkyl ether and polyoxyethylene alkyl phenyl ether having a side chain alkyl group having 12 to 14 carbon atoms, and (b) A puff cleaning composition containing as an essential component a water-soluble solvent selected from lower alcohols, alkylene glycols, and polyalkylene glycols, and substantially free of ionic surfactants. 2. The composition according to item 1, wherein the polyoxyethylene alkyl ether is an ethylene oxide adduct of a secondary alcohol. 3. The composition according to item 1, wherein the alkylphenyl group is nonylphenyl or octylphenyl.