KR20180035771A - Impregnated NBR(nitrile butadiene rubber) sponge of gel form cosmetic composition and method of preparing the same - Google Patents

Abstract

The present invention relates to nitrile butadiene rubber (NBR) sponge to be impregnated with a gel-phase cosmetic composition and a method for manufacturing the same. More specifically, the present invention relates to a sponge and a method for manufacturing the same wherein the NBR sponge to be impregnated is not deformed and uniformly discharges a cosmetic composition. The method for manufacturing an NBR sponge to be impregnated with a gel-phase cosmetic composition comprises the following steps: (S10) inserting liquid NBR, a vulcanizing agent, a vulcanizing accelerator, a foam stabilizer, and a dispersant in an agitator, mixing and agitating the same; (S20) inserting the materials, mixed in the earlier step, in the a foaming mold and foaming and molding the same by using a foaming device; (S30) aging a molded product in the foaming mold; (S40) vulcanizing the molded product; (S50) cutting the vulcanized product in a desired thickness; and (S60) forming a shape by cutting the NBR sponge to be impregnated after the cutting step (S50) and forming impregnation holes on the NBR sponge to be impregnated.

Description

TECHNICAL FIELD [0001] The present invention relates to a sponge for an impregnated butadiene rubber (NBR) in a gel-like cosmetic composition, and a method for preparing the same. More particularly, the present invention relates to an impregnated NBR (nitrile butadiene rubber)

The present invention relates to a nitrile butadiene rubber (NBR) sponge for impregnating a gel cosmetic composition, and more particularly to a nitrile butadiene rubber sponge for impregnating a cosmetic composition of a low viscosity, (Nitrile butadiene rubber) sponge for impregnation of a gel cosmetic composition which allows the cosmetic composition to be uniformly discharged when the cosmetic composition is impregnated, and a method for producing the same.

The nitrile butadiene rubber (SPR) sponge for impregnation of the gel cosmetic composition of the present invention has a sufficient elastic restoring force even when an external constant pressure is applied and prevents separation of cosmetics and sedimentation of inorganic oxides to improve storage stability To a nitrile butadiene rubber (NBR) sponge for impregnation of a gel cosmetic composition and a method for producing the same.

The present invention also relates to a method for impregnating a cosmetic composition of a low viscosity gel type into a foamed NBR (nitrile butadiene rubber) sponge and packaging the composition in a compact type container to improve the portability and ease of use of the user, NBR (nitrile butadiene rubber) sponge and a method for producing the same.

In general, a foundation of a color cosmetic composition is a representative color cosmetic material that conceals defects of the skin and exhibits a makeup effect of a natural skin tone. The cosmetic composition may be classified into a powder foundation, a solid foundation, an oily foundation and an emulsion type foundation.

The powder foundation contains more coloring pigments and white pigments than solid ones for beautiful finishing makeup and skin color correction, and coloring pigments and inorganic pigments are blended in different proportions depending on the case. In order to obtain a gloss effect, titanium oxide-based pearl pigment and the like are also used. However, the feeling of use is dry compared to other foundations, it can be clumped by sebum, and the makeup persistence is poor.

A solid foundation uses a sponge with a lot of water. When used as a wet sponge, a hydrophilic surfactant is added to give a creamy texture. When mixed with water, it becomes emulsified. People who prefer to use a refreshing finish because of their freshness and thinness are often used. However, using a sponge that is wet with water can cause skin troubles due to secondary contamination, resulting in poor sebum control ability.

Oily foundation is classified into compact type and stick type, and it is mainly used in winter because of high emollient effect. It spreads well on the skin and is good in adhesion, so it does not get rid of the makeup well and has excellent covering ability, but feeling heavy and frustrating.

And the emulsion type foundation is the most used in the foundation because of the moist feel and the excellent treatment function. Unlike the liquid type with high viscosity, the liquid type with low viscosity gives a feeling of lightness and moist feeling, giving a feeling of fresh feeling.

These emulsion type foundations use the contents in a tube, pump, jar type container, but they are not portable and it is difficult to quantitatively discharge the amount desired by the consumer. Since they have to be applied directly to the skin by hands, .

In addition, since the viscosity of the above-mentioned emulsified foundation is very low in a compact type container which is easy to carry, such as a solid foundation or an oil-based foundation, it is difficult to store in a container and thus it can not be applied to a compact type product.

In order to solve such a problem, Korean Patent Registration Nos. 10-1257628 and 10-1355051 disclose a proposed technique in which a UV-screening agent of a water-in-oil type is applied to a foamed urethane foam of ether polymer or ester polymer type The present invention relates to a cosmetic product impregnated with a foamed urethane foam.

The foamed urethane foam is a polymer having a urethane bond (-NH-COO-) in a polymer chain, and is produced by bonding an isocyanate having a valence of two or more with an active hydrogen compound such as a polyol. The polyol is selected from a polyether polyol or a polyester polyol.

However, the foamed urethane foam using the polyether polyol or the polyester polyol proceeds together with the exothermic reaction, and polyurethane is foamed while generating heat and high-pressure gas. At this time, in the portion where the foamed thickness is thinly formed, And the pressure is applied, the polyurethane gradually inflates and deforms on the inner surface.

Also, the isocyanate is an aromatic isocyanate such as tolulene diisocyanate (MDI) or methylenediphenyl diisocyanate (MDI), which has a quinone imide structure due to ultraviolet rays, resulting in yellowing of the foamed urethane foam.

Further, the foamed urethane foam containing the polyester polyol reacts with an active material such as an ultraviolet barrier cosmetic composition, a silicone oil or highly polar ethylhexyl methoxycinnamate, butylmethoxydibenzoylmethane, etc., and the foamed urethane foam There is a problem that the durability is lowered, such as the phenomenon of swelling or melting and tearing, and the original function is lost.

In addition, if the amount and stability of the contents are uneven or large depending on the pore size of the foamed urethane foam, the storability of the impregnated contents tends to fall off, and if the contents are too small, impregnation is not possible.

When the elastic hardness of the foamed urethane foam is too high, it is difficult to discharge the contents at a certain pressure when the toilet or the hand is pressed. If the elastic hardness is too low, excessive contents are discharged.

In addition, amine is used as a catalyst in the production of foamed urethane foam. The amine is mostly volatilized by heat during the production of the foamed urethane foam, but there is a problem that the amine remains unpleasant to some people with sensitive smell.

Korean Patent Laid-Open No. 10-2014-0123028 discloses a foamed foam having an improved feeling of use, which is made of NBR (acrylonitrile-butadiene rubber), SBR (styrene butadiene (Ethylene vinyl acetate), latex, silicone, film type, SIS (Styrene Isoprene Styrene), SEBS (Styrene Ethylene Butylene Styrene), PVA (Polyvinyl Alcohol) A silicone elastomer, a nitrile, a butyl, a polyether, and a neoprene. The present invention also relates to a foamed foam for impregnating a cosmetic composition.

The above-mentioned prior art does not provide a manufacturing example of an NBR foam, but merely mentions a technical idea that a foamed foam can be used as an NBR material.

In addition, the conventional NBR foam has a problem that the pores of the NBR foam are not uniform, the pore size is large, and the pore size of the NBR foam is small and densely structured, so that the cosmetic composition can not be impregnated.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a cosmetic composition containing a cosmetic composition, (Nitrile butadiene rubber) sponge for impregnating a gel-like cosmetic composition which allows the composition to be discharged, and a process for producing the same.

The nitrile butadiene rubber (SPR) sponge for impregnation of the gel cosmetic composition of the present invention has a sufficient elastic restoring force even when an external constant pressure is applied and prevents separation of cosmetics and sedimentation of inorganic oxides to improve storage stability It is an object of the present invention to provide a nitrile butadiene rubber (NBR) sponge for impregnating a gel cosmetic composition and a method for producing the same.

The present invention also relates to a method for impregnating a cosmetic composition of a low viscosity gel type into a foamed NBR (nitrile butadiene rubber) sponge and packaging the composition in a compact type container to improve the portability and ease of use of the user, NBR (nitrile butadiene rubber) sponge and a method for producing the same.

The present invention provides a sponge for impregnation of a gel cosmetic composition, which is made of NBR (nitrile butadiene rubber).

Further, it is preferable to add at least one selected from the group consisting of a vulcanizing agent, a vulcanization accelerator, a foam stabilizer, a coagulant, an antibacterial agent and a dispersing agent.

The nitrile butadiene rubber sponge of the present invention is characterized by having a hardness of 15 to 35 on the basis of ASKER hardness F type (Type F).

The nitrile butadiene rubber (NBR) sponge of the present invention has a density of 180 to 240 g / L.

The nitrile butadiene rubber (NBR) sponge of the present invention is characterized by having a pore number of 10 to 150 ppi (pore per inch).

In addition, the nitrile butadiene rubber (NBR) sponge for impregnation of the present invention is an open cell structure.

In addition, the present invention relates to a method for producing a polyurethane foam, which comprises mixing (S10) a liquid NBR (nitrile butadiene rubber), a vulcanizing agent, a vulcanization accelerator, a foam stabilizer and a dispersant into a stirrer, mixing and stirring the same, (S20) of molding and molding the foamed product using a foaming machine, a step (S30) of aging the molded product in the foamed mold, a vulcanizing step (S40) of vulcanizing the aged molded product in the vulcanizer, And a step (S50) of extracting the vulcanized molded article from the foam mold and cutting to a desired thickness.

In addition, the present invention further includes a forming step (S60) for cutting the impregnated NBR sponge to a predetermined size so that the impregnating NBR sponge can be accommodated in the cosmetic container after the cutting step (S50), and forming the impregnating hole in the impregnating NBR sponge .

As described above, the nitrile butadiene rubber (NBR) sponge for impregnation of the gel cosmetic composition according to the present invention and the method for producing the same are characterized in that a nitrile butadiene rubber sponge for NBR (impregnation) It is not deformed, and when the cosmetic composition is impregnated, the cosmetic composition is uniformly discharged.

The nitrile butadiene rubber (SPR) sponge for impregnation of the gel cosmetic composition of the present invention has a sufficient elastic restoring force even when an external constant pressure is applied, and is effective in separating cosmetics and preventing precipitation of inorganic oxides and improving storage stability have.

In addition, the cosmetic composition of the low viscosity gel type is impregnated into a foamed NBR (nitrile butadiene rubber) sponge and packaged in a compact type container, thereby enhancing portability and ease of use of the user.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing a method for producing a nitrile butadiene rubber (NBR) sponge for impregnation of a gel cosmetic composition. FIG.
2 is a perspective view of a foamed NBR (nitrile butadiene rubber) sponge according to an embodiment of the present invention.
3 is a perspective view of a foamed NBR (nitrile butadiene rubber) sponge according to another embodiment of the present invention.
4 is a sectional view of a foamed NBR (nitrile butadiene rubber) sponge according to another embodiment of the present invention.
5 is a perspective view of a foamed NBR (nitrile butadiene rubber) sponge according to another embodiment of the present invention.

The present invention has been accomplished in order to achieve the above technical object and as a result, it has been found that a method for manufacturing a nitrile butadiene rubber (NBR) sponge for impregnation of a gel cosmetic composition has been developed, The nitrile butadiene rubber (NBR) sponge of the present invention has excellent stability of deformation, water resistance and storage stability.

In order to accomplish the above object, the present invention provides a sponge for impregnating a gel-like cosmetic composition, which is made of NBR (nitrile butadiene rubber).

NBR (nitrile butadiene rubber) is a copolymer of acrylonitrile and butadiene prepared by emulsion polymerization, which is a main component of impregnated NBR (nitrile butadiene rubber) sponge.

By using the NBR (nitrile butadiene rubber), the nitrile butadiene rubber (NBR) sponge 10 is not deformed by the external environment of the cosmetic composition, and when the cosmetic composition is impregnated, the cosmetic composition is uniformly discharged, It has a sufficient elastic restoring force even when an external constant pressure is applied, and separates cosmetics and prevents precipitation of inorganic oxides, thereby improving storage stability.

The content of nitrile butadiene rubber (NBR) is preferably 91.5 to 98.1% by weight based on the total weight of the composition of the nitrile butadiene rubber (NBR) sponge 10 for impregnation.

It is preferable to add at least one selected from the group consisting of a vulcanizing agent, a vulcanization accelerator, a foam stabilizer, a coagulant, and a dispersing agent.

As the vulcanizing agent, a conventional vulcanizing agent containing sulfur (S), selenium (Se) or tellurium (Te) can be used.

The content of the vulcanizing agent is preferably 0.5 to 1.5% by weight based on the total weight of the composition of the impregnated NBR (nitrile butadiene rubber) sponge 10.

If the content of the vulcanizing agent is less than 0.5 wt%, the elastic force of the nitrile butadiene rubber sponge 10 is lowered. If the vulcanizing agent is more than 1.5 wt%, the nitrile butadiene rubber (NBR) sponge 10 is in a hard state There is a problem that when the external pressure is applied to the sponge 10 for impregnation NBR (nitrile butadiene rubber), the elastic restoring force is not sufficient.

As the vulcanization accelerator, Zinc diethyldithiocarbamate, Zinc of 2-mercaptobenzothiazole, EZ, MZ or ZnO may be used, but not limited thereto, May be used.

The content of the vulcanization accelerator is preferably 0.5 to 2.0% by weight based on the total weight of the composition of the impregnated NBR (nitrile butadiene rubber) sponge 10.

If the content of the vulcanization accelerator is less than 0.5% by weight, the vulcanization temperature and time can not be shortened. If the content of the vulcanization accelerator is more than 2.0% by weight, the vulcanization process proceeds too fast to produce a uniform nitrile butadiene rubber (NBR) There is no problem.

The foam stabilizer may be, but is not limited to, Trimene base (Ethane, chloro-, polymer with ammonia and formaldehyde) or Core Tex TNM-14S (Polyalkylene Glycol Derevatives).

The content of the foam stabilizer is preferably 0.2 to 1.0% by weight based on the total weight of the composition of the impregnated NBR (nitrile butadiene rubber) sponge 10.

If the content of the foam stabilizer is less than 0.2% by weight, fine bubbles generated when stirring the liquid NBR (nitrile butadiene rubber) can not be removed. If the content is more than 1.0% by weight, discoloration of the nitrile butadiene rubber (NBR) There is a problem that appears.

Sodium hexafluoride or bentonite may be used as the coagulant, but not limited thereto, and a kind conventionally used in the art may be used. The amount of coagulant can be controlled by the solidification rate.

The content of the coagulant is preferably 0.5 to 3.0% by weight based on the total weight of the composition of the impregnated NBR (nitrile butadiene rubber) sponge 10.

If the amount of the coagulant is less than 0.5 wt%, the liquid NBR (nitrile butadiene rubber) mixtures do not effectively coagulate. If the coagulant is more than 3.0 wt%, the nitrile butadiene rubber (NBR) sponge 10 ages.

Sodium Butylnaphthalene Sulfonate may be used as the dispersing agent, but the present invention is not limited thereto, and a species conventionally used in the art can be used.

The content of the dispersant is preferably 0.2 to 1.0% by weight based on the total weight of the composition of the impregnated NBR (nitrile butadiene rubber) sponge 10.

If the content of the dispersant is less than 0.2 wt%, the mixture of nitrile butadiene rubber (NBR) can not be uniformly dispersed. If the content of the dispersant is more than 1.0 wt%, the molecules of the dispersant are associated with each other to form spherical or rod- There is a problem of causing instability of NBR (nitrile butadiene rubber) particles.

The present invention is characterized by further comprising an antibacterial agent.

The antimicrobial agent can be, but not limited to, a gold-ilite light nano colloid solution, a silver-tourmaline nano colloid solution, or a metal nano colloid solution coated with silicon oxide. In the metal nanocolloid solution coated with the silicon oxide, the metal may be at least one selected from the group consisting of Au, Ag, Pt, Pd, Ru, Fe, Cu, Co) or nickel (Ni) is preferably used.

The antimicrobial agent prevents bacterial habitat which may be generated in a nitrile butadiene rubber (NBR) sponge 10 for impregnation, and prevents skin inflammation from being caused by bacterial inhibition.

The content of the antibacterial agent is preferably 0.1 to 0.5% by weight based on the total weight of the composition of the nitrile butadiene rubber (NBR) sponge 10 for impregnation.

If the content of the antibacterial agent is less than 0.1 wt%, the antimicrobial activity of the nitrile butadiene rubber sponge 10 is weak. If the content of the antibacterial agent is more than 0.5 wt%, the nitrile butadiene rubber (NBR) The pH and viscosity of the sponge 10 are lowered, and the foam is broken at the time of foaming, so that the pores of the nitrile butadiene rubber (NBR) sponge 10 are not uniform.

The content of the nitrile butadiene rubber sponge 10 containing the antibacterial agent is 91.0 to 98.0% by weight of nitrile butadiene rubber (NBR), 0.5 to 1.5% by weight of a vulcanizing agent, 0.5 to 2.0% by weight of a vulcanization accelerator, 1.0% by weight, a coagulating agent 0.5-3.0% by weight, an antibacterial agent 0.1-0.5% by weight and a dispersing agent 0.2-1.0% by weight.

The nitrile butadiene rubber sponge 10 of the present invention has a hardness of 15 to 35 and a density of 180 to 240 g / L based on the ASKER hardness F type (Type F) .

The nitrile butadiene rubber sponge 10 used in the present invention should be a nitrile butadiene rubber sponge having a suitable hardness and suitably an open cell type nitrile butadiene (NBR) rubber foam sponge 10 having a hardness of 15 to 35 and a density of 180 to 240 g / L in terms of ASKER hardness standard DUROMETER HARDNESS meter type F (Type F) nitrile butadiene rubber sponge 10 may be used.

If the hardness of the impregnation sponge is less than 15 and the density is less than 180 g / L, the impregnation sponge is too soft to impregnate the low-viscosity gel cosmetics with a uniform distribution, There is a problem that a low viscosity gel cosmetic impregnated with a nitrile butadiene rubber sponge for NBR impregnation is excessively discharged. When the hardness is more than 35 and the density is more than 240 g / L, the impregnation sponge is hard, There is a problem that the cosmetic material is not easily discharged.

The nitrile butadiene rubber (NBR) sponge 10 of the present invention has a pore number of 10 to 150 ppi (pore per inch).

The nitrile butadiene rubber (NBR) sponge 10 includes at least one impregnation sponge having a pore number of 10 to 150 ppi (pore per inch). The pore number may be a nitrile butadiene rubber (NBR) Refers to the number of pores per inch of sponge.

If the number of pores in the impregnating sponge 10 is less than 10 ppi, the number of pores impregnated with the cosmetic composition will be low, resulting in poor penetration. If the pore number is more than 150 ppi, have. And more preferably 50 to 100 ppi.

The nitrile butadiene rubber (NBR) sponge 10 of the present invention is characterized by an open cell structure.

The low viscosity gel cosmetic composition is contained in a compact type container by using a nitrile butadiene rubber (NBR) sponge 10 for impregnation. This is because the compact type container is excellent in portability compared to a tube or pump type container in terms of portability and ease of making, but in the case of a flowable cosmetic, it is likely to overflow or contaminate the container, As shown in FIG. 2, the low-viscosity gel cosmetic composition is impregnated in a foamed NBR (nitrile butadiene rubber) sponge 10 to be housed in a compact type container.

3 to 4, the low viscosity gel-like cosmetic composition is impregnated with a foamed NBR (nitrile butadiene rubber) sponge 10 having an impregnated hole 20, and is embedded in a compact type container do.

As shown in FIG. 5, the foamed NBR (nitrile butadiene rubber) sponge 10 may be formed with the impregnated holes 20 formed in an unoriented manner.

The impregnated hole 20 can easily impregnate the low viscosity gel cosmetic composition into the foamed NBR sponge 10 and the impregnated hole 20 serves as a capillary so that the low viscosity gel cosmetic composition is applied to the foamed NBR sponge 10 ). ≪ / RTI >

The nitrile butadiene rubber (NBR) sponge 10 impregnated with the low viscosity gel cosmetic composition is a closed cell in which the air bubbles are trapped in NBR (nitrile butadiene rubber), so that the low viscosity gel cosmetic composition is not impregnated Therefore, an open cell is preferable.

A method of manufacturing a nitrile butadiene rubber (NBR) sponge for impregnation of a gel cosmetic composition according to the present invention will now be described with reference to the accompanying drawings.

1 is a flow chart showing a method of manufacturing a nitrile butadiene rubber (NBR) sponge for impregnation of a gel cosmetic composition according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, and it is to be understood that the present invention is not limited thereto.

The present invention relates to a method for producing a curable composition, which comprises the steps of (S10) injecting a liquid NBR (nitrile butadiene rubber), a vulcanizing agent, a vulcanizing accelerator, a foam stabilizer and a dispersant into a stirrer, mixing and stirring the same, (S20) of injecting into a foam mold and foaming and molding using a foaming machine, aging the molded article in a foam mold (S30), vulcanizing step (S40) of vulcanizing the aged molded article in a vulcanizer, (S50) of extracting the molded product from the foam mold and cutting the molded product to a desired thickness.

In addition, the present invention further includes a forming step (S60) for cutting the impregnated NBR sponge to a predetermined size so that the impregnating NBR sponge can be accommodated in the cosmetic container after the cutting step (S50), and forming the impregnating hole in the impregnating NBR sponge .

The manufacturing method of the present invention will be described separately for each step.

A liquid NBR (nitrile butadiene rubber), a vulcanizing agent, a vulcanization accelerator, a foam stabilizer, an antibacterial agent and a dispersant are added to the stirrer, followed by mixing and stirring (S10).

A vulcanizing agent, a vulcanizing accelerator, a foam stabilizer, an antimicrobial agent and a dispersing agent are introduced into the agitator, wherein the vulcanizing agent is one of sulfur (S), selenium (Se) or tellurium (Te) Wherein the vulcanization accelerator is selected from the group consisting of zinc diethyldithiocarbamate, zinc salt of 2-mercaptobenzothiazole, EZ, MZ or ZnO. And the core stabilizer is added to a Trimene base (Ethane, chloro-, polymer with ammonia and formaldehyde) or Core Tex TNM-14S (Polyalkylene Glycol Derevatives), and the antimicrobial agent is a gold- Solution, a silver-tourmaline nanocolloid solution, and a metal nano-colloid solution coated with silicon oxide, and the dispersant is selected from the group consisting of sodium butyl lauryl sulphonate naphthalene sulfonate).

The raw materials are put into the stirrer and mixed and stirred at a speed of 30 to 100 rpm. If the speed is less than 30 rpm, there is a problem that the respective raw materials are not mixed uniformly. If the speed is more than 100 rpm, particles of liquid NBR (nitrile butadiene rubber) may be broken.

In addition, a viscosity control agent and a pH adjuster are further added to prevent problems of stability of particles of liquid NBR (nitrile butadiene rubber), which may occur during the manufacturing process, and generation of defective products in advance.

The viscosity adjusting agent may be selected from the group consisting of casein, sodium carboxymethyl cellulose and hydroxypropyl methyl cellulose, and the pH adjusting agent may be selected from the group consisting of potassium hydroxide or sodium hydroxide Aqueous solution is used.

The mixture mixed in the agitator is adjusted to have a viscosity of 5,000-12,000 cps through a viscosity regulator and a pH of 10-11 by adjusting the pH of the mixture to stabilize the particles of liquid NBR (nitrile butadiene rubber) Can be prevented in advance.

The mixture stirred with the coagulant is introduced into a foaming mold having a predetermined shape, followed by foaming and molding (S20) using a foaming machine.

The coagulant is preferably sodium fluorite or bentonite, and is foamed and molded at 25 to 35 DEG C for 5 minutes to 1 hour.

(S30) of aging the molded product in the foamed mold.

The aging temperature and time are aged at 25 to 35 DEG C for 1 to 3 hours. The reason for carrying out the maturing step is that the small bubbles in the mixture obtained in the step S10 are raised to a large bubble to make the bubbles of the sponge constant.

If the temperature is lower than 25 ° C, the stability of the foam is significantly lowered, and thus the pore size becomes uneven. When the temperature is higher than 35 ° C, the water contained in the liquid NBR (nitrile butadiene rubber) have.

If the aging time is less than 1 hour, NBR (nitrile butadiene rubber) that has not yet formed into a large pore can be obtained. If the aging time is more than 3 hours, the vulcanization at the vulcanization becomes high and the hardness becomes high .

A vulcanizing step (S40) of vulcanizing the aged molded product in a vulcanizer is performed.

The vulcanizer is a device for vaporizing the vulcanizing agent injected in the step S10 into a gas and converting the formed material into an elastic material such as rubber.

The molded article is vulcanized in a vulcanizer at a temperature of 85 to 105 DEG C for 40 to 65 minutes. If the temperature is less than 85 ° C, the vulcanization time becomes long, and the molded article may not have sufficient elasticity. If the temperature exceeds 105 ° C, the molded article may burn or discolor.

If the time is less than 40 minutes, the molded article may not be sufficiently vulcanized to have elasticity specific to rubber. If the time exceeds 65 minutes, the molded article may be exposed to excessive heat for a long time, resulting in burning or discoloration of the molded article.

The vulcanized shaped article is extracted from the mold and cut to a desired thickness (S50).

When the vulcanization process is completed, cut to the thickness of the impregnation sponge.

After the cutting step S50, the forming step S60 may be further performed in which the impregnating NBR sponge is cut to a predetermined size so as to be contained in the cosmetic container, and the impregnating hole is formed in the impregnating NBR sponge have.

The purpose of forming the impregnated hole is to increase the impregnation force of the standard impregnated NBR (nitrile butadiene rubber) sponge.

The nitrile butadiene rubber sponge 10 obtained by the above method has a hardness of 15 to 35 on the basis of ASKER hardness F type F and has a density of 180 to 240 g / And has a pore number of 10 to 150 ppi (pore per inch).

The impregnated NBR (nitrile butadiene rubber) sponge 10 of the present invention can impregnate a gel cosmetic composition, and can store and carry the gel cosmetic composition stably and safely.

The cosmetic composition that can be impregnated into the impregnated NBR (nitrile butadiene rubber) sponge 10 of the present invention is an emulsifiable composition, specifically, a w / o type or oil-in-water (O / W) Composition, specifically an oil-dispersed or water-dispersible composition.

The impregnated NBR (nitrile butadiene rubber) sponge 10 of the present invention can be housed in a compact cosmetic container having an open upper part and a container main body containing the contents and a container lid hinged to one side of the main body of the container.

Hereinafter, examples, comparative examples and test examples of the present invention will be described in detail.

The following examples, comparative examples and test examples are illustrative of the present invention, and the present invention is not limited to the following examples, comparative examples and test examples.

[ Example  ] Gel phase Cosmetics  Of the composition Impregnation NBR ( nitrile  butadiene rubber sponge

(S10): Liquid NBR (nitrile butadiene rubber) and vulcanizing agent sulfur (S) were added to a tank equipped with a stirrer, zinc diethyldithiocarbamate as a vulcanization accelerator, Trimenbase as a foam stabilizer and sodium butylnaphthalenesulfonate as a dispersant While mixing and stirring at 45 rpm, the viscosity control agent casein was added, the viscosity was adjusted to 6,500 cps, and the pH was adjusted to 10.6 by the addition of a 6% aqueous solution of potassium hydroxide.

(S20): The mixture obtained in the above step (S10) was added to the mold for foaming together with sodium silicate as a coagulant, followed by foaming and molding at 30 DEG C for 1 hour.

(S30): The molded product obtained after foaming and molding was put into an aging tank and aged at 30 DEG C for 1 to 3 hours.

(S40): The sliced cut molding was put into a dry vulcanizer and then vulcanized at a temperature of 85 to 105 DEG C for 40 to 65 minutes.

(S50): When the vulcanization process is completed, the process is cut to the thickness of the impregnation sponge.

(S60): Impregnation holes were formed in the cutter and the sponge according to the impregnating standard to prepare a nitrile butadiene rubber (VBR) sponge for impregnation.

[Comparative Example] Manufacturing method of foamed urethane sponge for impregnation

To compare the nitrile butadiene rubber (NBR) sponge for impregnation of the gel cosmetic composition of the present invention, a foamed urethane sponge for impregnation was prepared.

A method for manufacturing a foamed urethane sponge for impregnation

Water, amine catalyst, and silicone surfactant were mixed and mixed thoroughly for 20 minutes to prepare an amine mixture.

A polyether polyol or a polyester polyol and an isocyanate selected from toluene isocyanate or methylene diphenyl diisocyanate.

The amine mixture was added to the polyol and the isocyanate mixture and mixed and foamed at 3,500 rpm while maintaining the temperature at 24 to 26 ° C.

The blowing apparatus was operated to discharge gas generated during the foaming process, and then a foamed urethane sponge for impregnation was prepared.

The following tests were carried out by impregnating a low viscosity gel-like cosmetic composition into an impregnated NBR (nitrile butadiene rubber) sponge made by the above example and a foamed urethane sponge for impregnation made by a comparative example.

[Test Example 1] Deformation stability test of impregnation sponge

The NBR (nitrile butadiene rubber) sponge for impregnation and the foamed urethane sponge for impregnation of the comparative example were impregnated with the ester oil, the polar organic sunscreen agent and the volatile silicone oil contained in the composition of the low viscosity gel cosmetic composition, The volume reduction ratio of the impregnated NBR (nitrile butadiene rubber) sponge of the example and the comparative example of the impregnated foamed urethane sponge were measured.

Table 1 shows the deformation results of the impregnation sponge.

Comparative Example
Polyether foam urethane foam Comparative Example
Polyester foamed urethane sponge Example
NBR Sponge Ester oil 6.7% 3% 0.5% Polar organic sunscreen 10% 4 % 1.2% Volatile silicone oil 1.5% 0.5% 0.3%

As shown in Table 1, the polyether sponge, the polyester sponge, and the NBR sponge impregnated with the ester oil, the polar organic sunscreen agent, the volatile silicone oil, the polyether foam, the ester oil and the polar organic sunscreen, But the NBR sponge showed the least strain and excellent storage stability.

[Test Example 2] Water resistance test of impregnation sponge

In order to evaluate the hydrolysis characteristics of the impregnated NBR (nitrile butadiene rubber) sponge of the Example and the impregnated foamed urethane sponge of the Comparative Example, 10% concentration of caustic soda, hydrochloric acid, and nitric acid were added to the polyether foamed urethane sponge, The urethane sponge and the NBR sponge of the example were impregnated at room temperature for 7 days, then the polyether foamed urethane sponge, the polyester foamed urethane sponge and the NBR sponge of the example of the comparative example impregnated with the above were naturally dried.

The tensile specimen of the impregnating sponge of the above-mentioned embodiment and the comparative example of the impregnating sponge were subjected to tensile force to increase the force. The load at the breaking point was divided by the fracture cross-sectional area of the tensile specimen. The original length of the tensile specimen was subtracted from the original length of the tensile specimen, and the elongation, which is a percentage value obtained by dividing the original length of the specimen length, is shown in Table 2.

Comparative Example
Polyether foam urethane foam Comparative Example
Polyester foamed urethane sponge Example
NBR Sponge 10% caustic soda 88% collapse 98% 10% hydrochloric acid 76% collapse 94% 10% nitric acid 69% collapse 91%

As shown in Table 2, it was found that the NBR sponge of the Example was stable to hydrolysis, but the polyester sponge of Comparative Example collapsed.

[ Test Example  3] Impregnation NBR ( nitrile  butadiene rubber Sponge  Experiment of preference according to hardness

When the low viscosity gel cosmetic composition is impregnated into a nitrile butadiene rubber sponge for impregnation and applied to skin using a makeup tool, the difference in preference according to the hardness of the impregnated NBR (nitrile butadiene rubber) sponge is compared.

In Example 2, a low viscosity gel cosmetic composition was impregnated with a nitrile butadiene rubber (VBR) sponge having a hardness of 5, and Example 3 was prepared by impregnating a low viscosity gel cosmetic composition with a nitrile butadiene rubber (VBR) In Example 4, the low viscosity gel cosmetic composition was impregnated with a nitrile butadiene rubber (VBR) sponge having a hardness of 50.

The above Examples 2 to 4 were cremated for 50 days for women in their 20s and 30s for 7 days, and the use results were compared and evaluated. The preference of the impregnated NBR (nitrile butadiene rubber) sponge according to the hardness was evaluated by the sensory evaluation (5 point scaling method), and it was very good 5 point, good 4 point, average 3 point, poor 2 point, very poor 1 Point. The evaluation scores are shown in Table 3 below.

division Foamed NBR (nitrile butadiene rubber) sponge used for impregnation
Hardness (ASKER hardness F type) preference Example 2 5 2.4 Example 3 25 4.8 Example 4 50 3.8

As shown in Table 3, Example 3 in which the composition of Preparation Example was impregnated with a nitrile butadiene rubber (VBR) sponge having a hardness of 25 was found to have the highest preference.

[ Test Example  4 ] Impregnation NBR ( nitrile  butadiene rubber Sponge Pore  Experiment of preference according to number

We compared the differences in preference according to the number of pores of impregnated NBR (nitrile butadiene rubber) sponge when applying a low viscosity gel cosmetic composition to a skin using impregnated NBR (nitrile butadiene rubber) sponge and using a makeup tool.

In Example 5, a low-viscosity gel cosmetic composition was impregnated with a 5-pph nitrile butadiene rubber (SPR) sponge. In Example 6, a low-viscosity gel cosmetic composition was impregnated with 60 ppi of nitric olefine rubber sponge. In Example 7, the low viscosity gel cosmetic composition was impregnated with a nitrile butadiene rubber sponge for impregnation with a pore volume of 200 ppi.

The above Examples 5 to 7 were cremated for 50 days in the 20s and 30s for 7 days, and the use results were compared and evaluated. The preference of the impregnated NBR (nitrile butadiene rubber) sponge according to the number of pores was evaluated by a questionnaire consisting of sensory evaluation (5 point scaling method), very good 5 points, good 4 points, average 3 points, poor 2 points, very poor 1 point. The evaluation scores are shown in Table 4 below.

division Foamed NBR (nitrile butadiene rubber) sponge used for impregnation
Number of pores (ppi) preference Example 5 5 2.6 Example 6 60 4.7 Example 7 200 3.4

As shown in Table 4, Example 6 in which the composition of the preparation example was impregnated with an impregnation NBR (nitrile butadiene rubber) sponge having a pore number of 60 ppi showed the highest preference.

As described above, the present invention is not limited to the NBR (nitrile butadiene rubber) sponge for impregnation of the gel cosmetic composition and the method for producing the same, and the present invention is not limited to the above-described embodiments, It is to be understood that the present invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims and their equivalents. Lt; / RTI >

10: Foamed NBR sponge 20: Impregnated hole

Claims (5)

A nitrile butadiene rubber (NBR), a vulcanizing agent, a vulcanization accelerator, a foam stabilizer, a coagulant and a dispersant,
A viscosity control agent and a pH adjusting agent were added to prevent stability problems and defects of particles of liquid NBR (nitrile butadiene rubber)
Having a hardness of 15 to 35 on the basis of an ASKER hardener F type (Type F), a density of 180 to 240 g / L, a pore number of 10 to 150 ppi (pore per inch) Characterized in that the gel-like cosmetic composition is a cell (open cell) structure. A vulcanization accelerator in an amount of 0.5 to 2.0% by weight, a foam stabilizer in an amount of 0.2 to 1.0% by weight, a coagulant in an amount of 0.5 to 3.0% by weight and a dispersant in an amount of 0.2 to 1.0% by weight Lt; / RTI >
A viscosity control agent and a pH adjusting agent were added to prevent stability problems and defects of particles of liquid NBR (nitrile butadiene rubber)
Having a hardness of 15 to 35 on the basis of an ASKER hardener F type (Type F), a density of 180 to 240 g / L, a pore number of 10 to 150 ppi (pore per inch) Characterized in that the gel-like cosmetic composition is a cell (open cell) structure. A vulcanization accelerator of 0.5 to 2.0% by weight, a foam stabilizer of 0.2 to 1.0% by weight, a coagulant of 0.5 to 3.0% by weight, an antimicrobial agent of 0.1 to 0.5% by weight, 0.2 to 1.0% by weight of a dispersing agent,
A viscosity control agent and a pH adjusting agent were added to prevent stability problems and defects of particles of liquid NBR (nitrile butadiene rubber)
Having a hardness of 15 to 35 on the basis of an ASKER hardener F type (Type F), a density of 180 to 240 g / L, a pore number of 10 to 150 ppi (pore per inch) Characterized in that the gel-like cosmetic composition is a cell (open cell) structure. The method according to claim 1,
A nitrile butadiene rubber (NBR) sponge for impregnation of a gel cosmetic composition, further comprising an antibacterial agent. 4. The method according to any one of claims 1 to 3,
Wherein the foamed NBR (nitrile butadiene rubber) sponge 10 has an impregnated hole 20. The nitrile butadiene rubber (NBR) sponge for impregnating the gel cosmetic composition.

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