JPH067220A - Puff for cosmetic powder - Google Patents

Abstract

PURPOSE:To provide a puff which is superior in the touch, elasticity and weather-proof properties, and neither discolors after long time use, nor swells and deteriorates in spite of its contact with silicone oil. CONSTITUTION:This puff comprises a chlorinated polyethylene sponge, a composition in which chlorinated polyethylene of 100 pts.wt. is mixed with stabilizer of 0.5-50 pts.wt., organic foaming agent of 0.5-20 pts.wt. and organic peroxide of 0.5-10 pts.wt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic puff, and more particularly to a cosmetic puff comprising a chlorinated polyethylene sponge suitable for oily cosmetics.

[0002]

2. Description of the Related Art Conventionally, cosmetic puffs made of sponge or polyurethane foam made of synthetic rubber such as NBR or silicone rubber have been generally used, but those made of NBR sponge or polyurethane foam are weather resistant. The silicone rubber sponge has excellent touch and elasticity, but it has the drawback of swelling and deterioration due to the silicone oil often used in cosmetics. , The fields of use were limited.

[0003]

Accordingly, the object of the present invention is to provide excellent feel and elasticity, but also excellent weather resistance and not discolored during long-term use, and swell even when contacted with silicone oil. It is intended to provide a cosmetic puff that does not deteriorate.

[0004]

As a result of earnest research for solving the above-mentioned problems, the present inventor has found that a chlorinated polyethylene sponge is suitable as a material for cosmetic puffs and has reached the present invention. That is, the present invention is based on 100 parts by weight of chlorinated polyethylene, 0.5 to 50 parts by weight of a stabilizer, and an organic foaming agent.
The present invention relates to a cosmetic puff made of a chlorinated polyethylene sponge obtained from a composition containing 0.5 to 20 parts by weight and 0.5 to 10 parts by weight of an organic peroxide.

Explaining this in more detail, the chlorinated polyethylene sponge used as a raw material in the cosmetic puff of the present invention contains, as an essential component, 0.5 to 50 parts by weight of a stabilizer per 100 parts by weight of chlorinated polyethylene. 0.5 to 20 parts by weight of organic foaming agent and 0.5 to 10 parts by weight of organic peroxide, and optionally 100 parts by weight or less of plasticizer, 10 parts by weight or less of crosslinking aid, 300 parts by weight or less of filler, and 20 parts by weight of colorant. Hereinafter, if necessary, a composition obtained by adding a predetermined amount of a lubricant, an antistatic agent, a processing aid, an antioxidant, an ultraviolet protective agent, a flame retardant, etc., is uniformly kneaded, and then heated and foamed. Is obtained.

The chlorinated polyethylene used in the above composition has a chlorine content of 25 to 45% by weight, especially 30 to 45% by weight.
A 40% by weight amorphous material is desirable, for example,
Commercially available Erasulen 301MA, same (same below) 301A, 351A
(E), 401A (E), TR, 302NA (E), 352NA (E), 402NA (E), 3
52NAS, 352PA, 452NA, 406AE, 253A and 303A (all of which are manufactured by Showa Denko KK, product name) can be used. If the chlorine content is less than 25% by weight, it tends to be crystalline, so that the resulting cosmetic puff has poor rubber elasticity, and if it exceeds 45% by weight, the cosmetic puff has high rigidity. Not preferable.

As the stabilizer, since it is premised that the cosmetic puff comes into contact with the human body, heavy metal compounds such as lead, tin and barium compounds are not preferable, and zinc, aluminum and magnesium compounds are preferable. Examples thereof include hydrotalcite (manufactured by Kyowa Kasei Kogyo Co., Ltd.), aluminum silicate, magnesium silicate, etc., and the addition amount thereof is 0.5 per 100 parts by weight of chlorinated polyethylene.
-50 parts by weight, especially 5-20 parts by weight are preferred. This is
If it is less than 0.5 parts by weight, the effect of the stabilizer is not obtained, and if it is added in excess of 50 parts by weight, no further improvement of the effect can be expected and the cost is increased, which is not preferable.

As an organic foaming agent, its decomposition temperature is 150
It is preferably above ℃, especially above 170 ℃. This is
If the temperature is lower than 150 ° C, it will be difficult to control the primary vulcanization, which will be described later, and the total amount of the foaming agent will foam during primary foaming, and the resulting cosmetic puff will be hard. Representative examples of the organic foaming agent include dinitrosopentamethylenetetramine, azodicarboxylic acid amide, 4-4′-oxybisbenzenesulfonyl hydrazide, hydrazodicarboxylic acid amide, and the like.
These are used alone or in combination of two or more. The amount added is preferably 0.5 to 20 parts by weight, more preferably 1 to 5 parts by weight, based on 100 parts by weight of chlorinated polyethylene.
If the amount is less than 0.5 part by weight, the foaming is not sufficiently performed, and if it exceeds 20 parts by weight, the amount of decomposition gas generated is too large and abnormal foaming (mixing of abnormally large cell diameter) is not preferable.

As an organic peroxide, its one-minute half-life is
A temperature of 140 to 200 ° C is desirable, for example, 1,
1-bis (t-butylperoxy) -3,3,5-trimethylcyclohexane, t-butylperoxyisopropyl carbonate, t-butylperoxybenzoate, dicumyl peroxide, 2,5-dimethyl-2,
Examples thereof include 5-bis (t-butylperoxy) hexane and t-butylcumyl peroxide, and these are used alone or in combination of two or more. The amount of addition is 0.5 to 10 parts by weight, preferably 1 to 5 parts by weight, based on 100 parts by weight of chlorinated polyethylene. If this amount is less than 0.5 parts by weight, unvulcanization tends to occur, and if it exceeds 10 parts by weight, the resulting cosmetic puff loses elasticity and becomes resinous, which is not preferable.

As the plasticizer, any of those usually used for vinyl chloride resins can be used. This includes, for example, phthalates such as dioctyl phthalate, dibutyl phthalate, diisononyl phthalate and butylbenzyl phthalate; fats such as dioctyl adipate, diisononyl adipate, di-n-butyl adipate and dibutyl sebacate. Group dibasic acid esters; glycol esters such as pentaerythritol ester and diethylene glycol benzoate; tricresyl phosphate,
Phosphates such as triphenyl phosphate; epoxidized oils such as epoxidized soybean oil and epoxidized linseed oil; citrate esters such as acetyltributyl citrate, acetyltrioctyl citrate, and tri-n-butyl citrate. Trialkyl trimellitates such as octyl trimellitate and triisodecyl trimellitate; tetra-n-octylpyromellitate, polypropylene adipate, other polyester plasticizers, etc., and one or more of them may be mentioned. Used in combination. This addition amount is equal to or less than 100 parts by weight of chlorinated polyethylene, and particularly preferably 5 to 50 parts by weight.
If it exceeds the same amount, the kneading operability will be deteriorated and vulcanization inhibition will be likely to occur.

Examples of the crosslinking aid include polyfunctional monomers such as triallyl cyanurate, triallyl isocyanurate, trimethylolpropane trimethacrylate and triallyl trimellitate. The amount added is 10 parts by weight or less, particularly 1 to 5 parts by weight, based on 100 parts by weight of chlorinated polyethylene. If it exceeds 10 parts by weight, the elasticity of the obtained cosmetic puff is impaired, which is not preferable.

As the filler, silica obtained by a wet or dry method is preferable in order to improve the strength of the base material of the cosmetic puff, and it is generally within the range of 30 parts by weight or less relative to 100 parts by weight of chlorinated polyethylene. used. If it exceeds 30 parts by weight, the resulting cosmetic puff becomes brittle, which is not preferable. Examples of the filler for the purpose of increasing the amount include heavy calcium carbonate, calcium carbonate such as light calcium carbonate, clay, alumina white, barium carbonate, talc, etc. These are used alone or in combination of two or more kinds. . These may be added for the purpose of adjusting the hardness, in which case the amount added is 100% chlorinated polyethylene.
The maximum amount is 100 parts by weight with respect to parts by weight, and the addition of more than 100 parts by weight impairs the processability of the composition and is not preferred.

As the colorant, any one commonly used in vinyl chloride resins can be used. Such colorants include, for example, metals such as aluminum powder and bronze powder, carbons such as carbon black, oxides such as titanium oxide, zinc white, and red iron oxide, sulfates such as precipitated barium sulfate, and calcium carbonate. Inorganic pigments such as carbonates such as basic magnesium carbonate, clay, silicates such as ultramarine blue, chromates such as yellow lead, aluminates such as cobalt blue, and ferrocyan compounds such as dark blue; toluidine red; Azo pigments such as permanent carmine FB, disazo yellow AAA, lake red C, polycyclic pigments such as phthalocyanine blue, indanthrone blue, quinacridone red, Victoria pure blue BO lake, dyed lakes such as alkali blue toner, azine Organic pigments such as pigments and fluorescent pigments; and basic And the like; fees, acid dye, solvent dye, dyes such as disperse dyes. These colorants may be used alone or in combination of two or more. In general, the addition amount is often small, and 0.01 to 2 parts by weight for organic pigments and 1 to 2 parts by weight for inorganic pigments are sufficient with respect to 100 parts by weight of chlorinated polyethylene.

As described above, the composition may further contain a lubricant, an antistatic agent, a processing aid, an antioxidant, if necessary.
It is possible to add and blend a predetermined amount of an ultraviolet protective agent, a flame retardant and the like. Examples of the lubricant include fatty acid lubricants such as stearic acid, palmitic acid and myristic acid, aliphatic amide lubricants such as stearic acid amide, palmitic acid amide, and methylenebisstearamide, glyceryl monostearate, ethyl diaminostearate and butyl. Fatty acid ester lubricants such as stearate, or metallic soap,
Low molecular weight wax, polyethylene wax, liquid paraffin, etc. are mentioned, and these are used by 1 type or in combination of 2 or more types.

As the antistatic agent, various cationic, anionic, nonionic or amphoteric surfactants are used. Specific examples include alkyl amine salts, alkyl quaternary ammonium salts, alkyl imidazoline derivatives, fatty acid amine salts, alkyl phosphate ester salts, alkyl sulfate ester salts, polyoxyethylene alkyl ethers, fatty acid glycerin esters, and the like. Used alone or in combination of two or more. A methyl methacrylate resin or the like is used as the processing aid.

As the antioxidant, aldol-α-naphthelamine, N-N-diphenyl-p-phenylenediamine, phenyl-β-naphthelamine, 2,6-dibutyl-p-cresol, 2,5-di-t- Butyl hydroquinone, 2,2'-thiobis- (4-methyl-6-t
-Butylphenol), alkylated aryl phosphites, etc., and these are used alone or in combination of two or more.

Examples of the anti-UV agent include salicylic acid derivatives such as phenyl salicylate, benzophenone compounds such as 2,4-dihydroquinone benzophenone, and 2-
Examples thereof include benzotriazole-based compounds such as (2′-hydroxy-5′-methylphenyl) benzotriazole and anilide oxalate derivatives, and these are used alone or in combination of two or more.

Examples of the flame retardant include inorganic compounds such as antimony trioxide and sodium antimonate, phosphoric acid esters and phosphoric acid compounds, chlorinated flame retardants such as chlorinated paraffins and chlorinated polyolefins, and brominated flame retardants such as hexabromobenzene. Examples thereof include a flame retardant, and these are used alone or in combination of two or more.

From the composition comprising the above-mentioned various components,
In order to obtain a chlorinated polyethylene sponge which is a material for the cosmetic puff of the present invention, first, a chlorinated polyethylene and a stabilizer are appropriately placed in a container, together with a plasticizer and a crosslinking aid, if necessary,
Weigh each separately and mix, stir and mix. Transfer the resulting mixture to a pressure kneader, Banbury mixer, etc.
Knead uniformly with two rolls at 120 ° C. Prior to this kneading, a filler or a colorant may be added if necessary. The obtained kneaded mass is wound around two heated rolls and roll-kneaded. Further, an organic foaming agent and an organic peroxide are added and uniformly kneaded, and then the mixture is dispensed into a sheet. This sheet is made slightly thicker than the spacer, and press plates are applied to the top and bottom to perform primary vulcanization and primary foaming in a press at 170 to 180 ° C for 5 to 10 minutes. The sponge sheet thus obtained is taken out and put in an oven at 180 to 220 ° C. for 10 to 30 minutes as a free state for secondary vulcanization and secondary foaming to obtain a chlorinated polyethylene sponge sheet.

The chlorinated polyethylene sponge thus obtained can be used as the cosmetic puff of the present invention by peeling off one or both surface skins with a slicer or the like and punching it into a desired shape.

[0021]

Since the cosmetic puff according to the present invention is made of the above-mentioned chlorinated polyethylene sponge as a material, it has excellent feel and elasticity, yet has excellent weather resistance and does not discolor during long-term use. It does not swell or deteriorate when it comes into contact with oil.

[0022]

EXAMPLES The present invention will now be described in more detail with reference to examples, but the present invention is not limited to these descriptions. Example 1 a) Erasulene 351A (Showa Denko KK, chlorinated polyethylene, trade name) 100 parts by weight, b) Hydrotalcite KW
-2200 (Kyowa Chemical Industry Co., Ltd., stabilizer, trade name) 10 parts by weight, c) t-butyl cumyl peroxide (organic peroxide) 3 parts by weight, d) triallyl cyanurate (crosslinking aid) 3 parts by weight Parts and e) 3.5 parts by weight of dinitrosopentamethylenetetramine (organic blowing agent) on a scale 5
In a plastic container having a capacity of 1 liter, the components a, b and d therein are mixed, and this mixture is evenly wound on a 6 "double roll having a roll surface temperature of 80 ° C for about 10 minutes. After kneading, the above components c and e were added, and the mixture was further kneaded for 10 minutes, and then preformed into a sheet with a thickness of 10 t and a size of 200 mm square. Put the above sheet inside, 170
Primary vulcanization and primary foaming were performed for 7 minutes with a press at ℃. The sheet was taken out of the press and put in a dryer at 200 ° C. for 30 minutes for secondary vulcanization and secondary foaming. The specific gravity of the obtained sponge sheet was 0.35. Remove the skin on both the front and back sides of this sheet with a slicer and use a 100φ die
A cosmetic puff of 10t × 100φ was obtained.

Example 2 A cosmetic puff was obtained in the same manner as in Example 1 except that 20 parts by weight of dioctyl phthalate was added as a plasticizer in addition to the components a to e (mixed with the components a, b and d). It was The specific gravity of the sponge sheet at this time was 0.25.

Example 3 A cosmetic puff was obtained in the same manner as in Example 1 except that 50 parts by weight of dioctyl phthalate was added as a plasticizer in addition to the components a to e (mixed with the components a, b and d). It was At this time, the specific gravity of the sponge sheet was 0.18.

The cosmetic puff obtained in Example 1 had a hard feel, the cosmetic puff obtained in Example 2 had an intermediate feel, and the cosmetic puff obtained in Example 3 had a soft feel. When each puff was immersed in a hexamer of dimethylsiloxane, which is frequently used as a cosmetic agent, at room temperature for 7 days, it was confirmed that the puff could be used as various cosmetic puffs without weight change and strength deterioration. A similar test was conducted on a silicone rubber-based cosmetic puff for comparison. As a result, the volume was expanded by 200% and the strength was remarkably deteriorated, and the product could no longer be used as a cosmetic puff.

[0026]

EFFECTS OF THE INVENTION The cosmetic puff of the present invention has excellent feel and elasticity, but also has excellent weather resistance, does not discolor during long-term use, and swells and deteriorates upon contact with silicone oil. Absent.

Claims (1)

[Claims] 1. A stabilizer to 100 parts by weight of chlorinated polyethylene.
A cosmetic puff consisting of a chlorinated polyethylene sponge obtained from a composition containing 0.5 to 50 parts by weight, an organic foaming agent of 0.5 to 20 parts by weight, and an organic peroxide of 0.5 to 10 parts by weight.