WO2019022414A1 - Cosmetic puff and manufacturing method therefor - Google Patents

Abstract

The present invention relates to a cosmetic puff made of a polyurethane foam manufactured by reacting, with a polyisocyanate, a polyol and a chain extender which comprise biomass-derived 1,3-propanediol as monomers, wherein the polyurethane foam comprises microcapsules, having biomass-derived 1,3-propanediol, included therein as a central material.

Description

Cosmetic puff and its manufacturing method

The present invention relates to a cosmetic puff and a method of manufacturing the same. More specifically, the present invention relates to a puff which is eco-friendly, has excellent soft touch and moisturizing property, and a manufacturing method thereof.

Cosmetic puffs are generally used to apply skin cover cosmetics such as foundations. As it is mainly used for a sensitive face, it is required to have a soft texture and a cushioning and elasticity so as not to damage the skin.

Therefore, a polyurethane material having good elasticity and stretchability and good durability is widely used as a raw material for puff. Polyurethane is a resin obtained by addition polymerization of polyol and polyisocyanate, and is based on petroleum-based raw materials. Recently, industrial trends are environmentally friendly, and studies on the development and application of raw materials derived from natural materials have been actively pursued to reduce the reliance on petroleum-based raw materials as much as possible. In particular, cosmetics-related fields are products that are in direct contact with the skin, so there is a high demand for environment friendliness.

On the other hand, the cosmetic puff tends to become dry and hard as time passes, so that smooth spreadability of the same cosmetics as in the case of the first use, or smear capable of covering even a small amount of the cosmetic puff can not be obtained. Therefore, the cosmetics are increasingly used, and the cosmetics are thickened or excited and the cosmetics are wasted.

Therefore, the present inventors intend to provide a cosmetic puff having improved softness of the polyurethane material itself and also having moisture retention through 1,3-propanediol derived from biomass and a method for producing the same.

In order to solve the above-mentioned problems, the present invention provides a polyurethane resin composition comprising a polyol containing 1,3-propanediol derived from biomass as a monomer, and a polyurethane produced from a chain extender containing 1,3-propanediol derived from biomass as a monomer A cosmetic puff comprising a foam.

According to a preferred embodiment of the present invention, the polyol is preferably a polyester-based polyol or a polyether-based polyol.

According to another preferred embodiment of the present invention, the polyol is preferably polyoxytrimethylene glycol.

According to another preferred embodiment of the present invention, the polyurethane foam is preferably biomass-derived from 25 to 70% of the carbon skeleton constituting the main chain of the polyurethane.

According to another preferred embodiment of the present invention, the polyurethane foam may further comprise microcapsules in which 1,3-propanediol derived from biomass is contained as a core substance.

According to another preferred embodiment of the present invention, the polyurethane foam is preferably padded with an aqueous solution containing 1 to 10% by weight of microcapsules.

According to another preferred embodiment of the present invention, 1,3-propanediol derived from the biomass contained in the microcapsules is preferably 100 to 150% by weight based on the total weight of the microcapsules.

According to another preferred embodiment of the present invention, the 1,3-propanediol in the microcapsules is preferably adsorbed in the porous silica gel.

According to another preferred embodiment of the present invention, the microcapsules preferably have a size of 0.5 to 30 mu m.

According to another preferred embodiment of the present invention, the polyol is preferably polyoxytrimethylene glycol.

According to another preferred embodiment of the present invention, the cosmetic puff preferably further comprises an antibacterial agent.

According to another preferred embodiment of the present invention, the cosmetic puff may be one in which the dry polyurethane foam and the film are laminated in this order under the polyurethane foam.

In order to solve the above-mentioned problems, the present invention also provides a method for producing a polyurethane polymer, comprising the steps of: preparing a polyurethane polymer by addition polymerization of a polyol containing 1,3-propanediol derived from biomass and a chain extender, polyisocyanate; Kneading and defoaming the dispersion containing the polyurethane polymer, water-soluble fine particles and solvent; Injecting a dispersion liquid obtained by kneading and defoaming into a mold to produce a polyurethane foam molding; And a step of slicing the polyurethane foam molding.

According to a preferred embodiment of the present invention, it is possible to further include padding the sliced polyurethane foam molding with a microcapsule-containing solution containing biomass-derived 1,3-propanediol as a central substance.

In order to solve the above-mentioned problems, the present invention also provides a method for producing a polyurethane resin, comprising the steps of: preparing a polyurethane resin solution by addition polymerization of a polyol containing 1,3-propanediol derived from biomass and a chain extender, polyisocyanate; Mixing 100 to 400 parts by weight of an anhydride with 100 parts by weight of the polyurethane resin solution to prepare a blend; Applying and curing the compounding liquid to a release mold to form a coating layer to obtain a laminate having a two-layer structure having a release mold layer and a coating layer; And peeling the releasing fabric from the laminate having the two-layer structure to form a polyurethane foam sheet composed of a coating layer.

According to a preferred embodiment of the present invention, between the step of obtaining a laminate having a two-layer structure and the step of forming the polyurethane foam sheet, the polyurethane coating layer of the laminate having the two- - < / RTI > padding with a microcapsule containing solution containing propanediol as a central substance.

According to another preferred embodiment of the present invention, the microcapsule-containing solution may comprise 1 to 10% by weight of microcapsules, 1 to 5% by weight of a water-soluble urethane-based or acrylic binder and the balance of water.

According to the present invention, a cosmetic puff having excellent softness, stretchability and elasticity can be provided.

The cosmetic puff according to the present invention has a moisturizing property and prevents the drying of the puff, thereby reducing the deterioration of physical properties such as spreadability and spreading property of the puff over time.

The cosmetic puff according to the present invention can moisturize the skin due to the moisturizing ingredient further contained in the puff itself.

In addition, the cosmetic puff according to the present invention can be environmentally friendly by using a regenerated natural material derived from biomass as a raw material.

1 is a schematic diagram of an apparatus that may be used for a padding process in accordance with an embodiment of the present invention.

FIG. 2 is a photograph showing an inner surface of a cosmetic puff including microcapsules of about 3 .mu.m size by SEM according to Example 2 of the present invention. FIG.

FIG. 3 is a photograph showing an inner surface of a cosmetic puff containing microcapsules of about 30 .mu.m size by SEM according to a second embodiment of the present invention.

The cosmetic puff according to the present invention comprises a polyurethane foam produced by reacting a polyol containing 1,3-propanediol derived from biomass as a monomer, a polyisocyanate and a chain extender.

Polyurethane foam

The polyurethane can be obtained by subjecting a polyol and a polyisocyanate to an addition polymerization reaction to prepare a prepolymer having isocyanate groups at both terminals and then reacting the polyhydric alcohol with a terminal isocyanate group as a chain extender.

The polyurethane of the present invention contains, as polymerized units, a polyol containing 1,3-propanediol derived from biomass as a monomer. The 1,3-propanediol derived from biomass may be derived from corn. 1,3-Propanediol derived from corn can provide excellent flexibility and elasticity, soft and moist feel to the polyurethane produced, and can also provide moisturizing properties. Therefore, the softness of the polyurethane itself can be improved, and the puff using the same can also provide moisturizing properties to the skin. The step of obtaining 1,3-propanediol from corn can be carried out according to a known method of saccharifying and fermenting biomass to extract alcohol.

As the polyol containing 1,3-propanediol derived from biomass as a monomer, a polyester-based polyol or a polyether-based polyol can be preferably used.

The polyether-based polyol is prepared by reacting an alkylene oxide with a polyhydric alcohol, and can be prepared by selecting a starting material suitable for the purpose. As polyhydric alcohols, 1,3-propanediol derived from biomass can be used alone or in combination with other polyhydric alcohols. Other polyhydric alcohols include 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, ethylene glycol, diethylene glycol, polyethylene glycol , Polypropylene glycol, and polytetramethylene glycol. The content of 1,3-propanediol derived from biomass can be adjusted according to the physical properties of the desired polyurethane. Propanediol derived from biomass is used in an amount of not less than 50% by weight, more preferably not less than 70% by weight, most preferably, alone, of the polyhydric alcohol monomer component in terms of environmental friendliness and softness May be more preferably used.

In the present invention, the polyether polyol is preferably a polyether polyol produced by using 1,3-propanediol derived from biomass in an amount of 50% by weight or more, preferably 80% by weight or more, more preferably, Glycol is most preferably used.

On the other hand, the polyester-based polyol can be produced by reacting a polyhydric alcohol with an acid. As the polyhydric alcohol, 1,3-propanediol derived from biomass is preferably used, and in addition to 1,3-propanediol derived from biomass, polyhydric alcohols known in the art can also be used in combination. Examples thereof include 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, ethylene glycol, diethylene glycol, polyethylene glycol, polypropylene glycol and polytetramethylene glycol. The content of 1,3-propanediol derived from biomass can be adjusted according to the physical properties of the desired polyurethane. In view of enhancing environmental friendliness and softness, 1,3-propanediol derived from biomass is preferably used in an amount of at least 50% by weight, more preferably at least 80% by weight, most preferably alone in the polyhydric alcohol monomer component May be more preferably used.

The acid component for producing the polyester-based polyol is not particularly limited as long as it can react with 1,3-propanediol to produce a polyester-based polyol. Specific examples thereof include sebacic acid, adipic acid, succinic acid, isophthalic acid and terephthalic acid. From the viewpoint of environmental friendliness, sebacic acid or succinic acid derived from biomass can be preferably used, and sebacic acid is more preferable in terms of softness of the polyurethane puff and elasticity and stretchability.

The polyhydric alcohol containing 1,3-propanediol derived from biomass and the acid may be reacted at a molar ratio of 1: 1 to 1.3, and the weight average molecular weight of the produced polyester-based polyol is preferably about 1,000 to 4,000, More preferably from 1,000 to 3,000, and most preferably from 1,500 to 2,500. By having such a weight average molecular weight, softness can be imparted to the produced puff.

The polyisocyanate may include aromatic, aliphatic and / or cycloaliphatic polyisocyanates. Examples of the aromatic polyisocyanate include 2,4-toluene diisocyanate, 2,6-toluene diisocyanate and 4,4-methylene diphenyl diisocyanate, and aliphatic and alicyclic polyisocyanates include 1,6-hexamethylene di Isocyanate (HDI), isophorone diisocyanate (IPDI), and methylene bis (4-cyclohexyl isocyanate). These may be used alone or in combination.

The polyol and the polyisocyanate are preferably added in an excess amount of the polyisocyanate to the polyol so that the isocyanate group is disposed at the end of the prepolymer obtained after the addition reaction.

The polyhydric alcohol used as the chain extender may be the same as that used in the polyol, and 1,3-propanediol derived from biomass may preferably be used.

The hydroxyl group of the polyhydric alcohol used as the chain extender reacts with the isocyanate group of the prepolymer to form a polyurethane polymer. The weight average molecular weight of the polyurethane polymer may be reacted until the weight average molecular weight of the polyurethane polymer reaches a desired value, and the weight average molecular weight of the polyurethane polymer is preferably 200,000 to 400,000. In addition to the viscosity of 20,000 ~ 70,000cps, 25 ℃, 100 % modulus of 10 ~ 30kg / cm ² is preferred.

By making the weight average molecular weight, viscosity, and 100% modulus all fall within the above range, it is possible to retain cushioning property and stretchability while securing a soft feel required as a cosmetic puff.

In the present invention, the polyurethane may be subjected to the prepolymer synthesis and the chain extension reaction in separate processes or in a single process. For example, after the polyol and the polyisocyanate are reacted in the first step, the reaction of the prepolymer and the chain extender can be carried out in the subsequent second step, or the polyol, the polyisocyanate and the chain extender may be mixed And the chain extension reaction may be carried out together.

When the polyol, the polyisocyanate and the chain extender are reacted together, the molar ratio is preferably 1: 5 to 6: 4 to 6. If the molar ratio is different, the molecular weight may not increase to a desired level, or the viscosity may increase and the reaction may be slowed down.

According to the present invention, 25 to 70% of the carbon skeleton constituting the main chain of the polyurethane is derived from biomass, and preferably 60% or more. By doing so, a polyurethane foam sheet improved in environmental friendliness and softness can be obtained.

In addition, the cosmetic puff according to the present invention may further include microcapsules containing 1,3-propanediol derived from biomass as a central substance for improving the moisture retention.

Microcapsule

The cosmetic puff of the present invention may further comprise microcapsules containing 1,3-propanediol derived from biomass as a central substance.

The present invention uses a microcapsule to contain a separate moisturizing substance, preferably 1,3-propanediol derived from biomass, in the cosmetic puff so that the moisturizing effect can be enhanced when the puff is used.

The 1,3-propanediol derived from the biomass contained in the microcapsules is preferably 100 to 150% by weight based on the total weight of the microcapsules. By entering this range, adequate moisture retentivity can be imparted by pressurization, and durability of the microcapsule can be ensured.

As the wall material of the microcapsule, it is preferable to use porous silica gel so that the moisturizing component can be continuously released during puff use. The porous silica gel contains many voids and can adsorb moisturizing substances into the pores. Therefore, when the puff is used, the moisturizing material adsorbed by pressurization can be released to the skin.

The porous silica gel that forms the walls of the microcapsules has an average particle size of about 30 탆 or less in diameter. Preferably, it has an average particle size of from 0.1 mu m to 30 mu m in diameter, more preferably from 0.3 mu m to 10 mu m, and still more preferably from 0.5 mu m to 9 mu m. This range can be preferably used without affecting the mechanical properties of the puff and the soft feel of the puff.

Porous silica gel is commercially available. The method of adsorbing the moisturizing substance, which is a central substance, on the porous silica gel can be carried out by appropriately selecting a method known in the art, for example, by using ultrasonic waves.

The microcapsules are contained in the range of 1 to 10% by weight, preferably 3 to 5% by weight based on the weight of the impregnating liquid for padding of the polyurethane foam. By allowing the puff to fall within the above-mentioned range, it is possible to appropriately impart moisture retentivity by pressurization when the puff is used, and to appropriately retain the stretchability of the puff.

Cosmetic puff

The cosmetic puff according to the present invention comprises a polyol comprising the above-mentioned biomass-derived 1,3-propanediol as a monomer and a polyurethane foam prepared from a chain extender.

The polyurethane foam may further include porous silica gel-based microcapsules containing the biomass-derived 1,3-propanediol as a central substance for adsorption to improve the moisture retention property.

In addition, the polyurethane foam is supported by a dry polyurethane foam and a synthetic resin film which are sequentially stacked on the lower surface of the polyurethane foam puff for maximizing the elasticity, stretchability and soft feeling of the polyurethane foam puff and for the convenience of the user.

The polyurethane foam containing polyurethane foam or microcapsule is preferably in the range of 1 to 2 mm with respect to the total thickness of the cosmetic puff.

The dry polyurethane may preferably be one produced by a known dry polyurethane manufacturing process, and is preferably in the range of 4 to 5 mm with respect to the total thickness of the cosmetic puff.

The material of the synthetic resin film is not particularly limited, but it is more preferable that the puff is made of the same polyurethane film as the polyurethane foam in view of the elasticity and elasticity of the puff and the peeling and hydrolysis resistance.

In addition, the cosmetic puff according to the present invention may be provided with a handle or the like attached to a part of the synthetic resin film, for example, which is usually used for user's convenience.

Further, the cosmetic puff according to the present invention may contain an antibacterial agent through an antibacterial treatment. The antibacterial treatment can be carried out using known antibacterial agents according to known methods in this field. For example, an antibacterial agent such as a zinc-based antibacterial compound or metal nanoparticles may be incorporated into a polyurethane foam sheet by a method such as impregnation or spraying, thereby exhibiting an antibacterial function. Or a polyurethane foam sheet containing microcapsules by impregnation, spray coating or the like, thereby exhibiting an antibacterial function. Or a cosmetic puff containing a polyurethane foam sheet by impregnation, spray coating or the like, thereby exhibiting an antibacterial function.

Manufacturing method of cosmetic puff

The cosmetic puff according to the present invention can be produced by a batch or continuous process. The batch formula can secure a wide surface area of the cross section of the produced polyurethane puff, and has the advantage of easily securing the physical properties required for the cosmetic puff. The continuous type has advantages in that the puff size can be easily adjusted, the process time is saved, and the mass production is easy. Therefore, it can be selected and used according to the manufacturing situation.

The batch process can be carried out by known methods in this field. According to one example, water-soluble fine particles such as sodium sulfate, potassium sulfate, sodium chloride, potassium chloride, sodium bicarbonate, sodium carbonate, potassium carbonate, A polyurethane polymer and a solvent is kneaded and defoamed, a polyurethane foam molded article is prepared using the mold, and then the formed polyurethane foam molded article is sliced to an appropriate thickness to produce a polyurethane foam sheet . On the other hand, the water-soluble fine particles may be used alone or in combination of two or more.

The produced polyurethane foam sheet can be provided as it is or after the microcapsule is padded, and then the process of laminating the dry polyurethane foam sheet and the synthetic resin film. The process for laminating the dry polyurethane foam sheet and the synthetic resin film may be a known method for maintaining a laminated structure such as fusion bonding such as heat fusion or application of an adhesive without any particular limitation. The padding of the microcapsule can be carried out according to a known method in this field, for example, through the padding apparatus shown in Fig. In the padding process, the polyurethane foam sheet is obtained by impregnating the microcapsule impregnation liquid through a padding device, and then, through a squeeze roller, into a polyurethane foam sheet containing a desired content of microcapsules.

As described above, the microcapsule-impregnating solution is prepared by adding 1 to 10% by weight of microcapsules to the total weight of the impregnating solution, 1 to 5% by weight of a water-soluble urethane or acrylic binder so that the microcapsules can be retained in the polyurethane foam, Water.

The padding can be adjusted to suit the conditions such as process time, squeeze pressure, etc. so that the microcapsule can be included in the desired amount. It is possible to easily adjust the degree of impregnation of the polyurethane foam while maintaining the durability of the microcapsule by performing the temperature at 150 to 170 ° C.

On the other hand, in the continuous process, a method (first aspect) using an undulating fabric having a deep bend on the surface and a method (second aspect) using a puff slicing as in a batch method is possible.

According to a first aspect of the present invention, there is provided a process for producing a polyurethane foam, comprising: coating a blend containing a solvent-type polyurethane resin solution, an anhydride and a solvent on a release fabric woven with warp and weft, which is a synthetic fiber filament having a fineness of 300 to 450 denier; Coating and curing to form a polyurethane coating layer on the release fabric; Separating the release fabric from the coated fabric having the coating layer formed thereon to obtain a polyurethane foam sheet as a cosmetic puff, thereby obtaining a polyurethane foam sheet constituting the cosmetic puff. The first aspect can transfer the curved pattern of the release fabric to the surface of the polyurethane foam sheet by using a release fabric made by weaving a synthetic fiber yarn of a cotton-like finish. Accordingly, it is possible to provide a polyurethane foam sheet excellent in soft and emotional touch feeling without going through the buffing process.

According to a second aspect, there is provided a process for producing a polyurethane foam, comprising the steps of: forming a blend liquid coating layer by coating a blend liquid containing a solvent-type polyurethane resin, an anhydride and a solvent on a release mold; Laminating another release fabric on the coating layer; Successively coagulating / rinsing / drying the laminate to obtain a laminate having a three-layer structure; Slicing a middle layer of the manufactured laminate; A polyurethane foam sheet is obtained through a step of peeling a release-type monolayer from a laminate having a two-layer structure having two dissociative monolayers formed by slicing and a coating layer to obtain a polyurethane foam sheet. It is possible to obtain a polyurethane foam sheet having a smooth and emotional touch feeling which can be obtained by the batch method while being continuous through the slicing step. Since the second aspect is subjected to the slicing process, it is not necessary to use a step-like fabric having the same degree as in the first aspect. For example, the polyester fabric can be used without any particular limitation.

In the first and second aspects, the blending liquid containing a polyurethane resin for coating can be prepared by mixing and stirring, for example, 100 to 400 parts by weight of an anhydride solution with respect to 100 parts by weight of a solvent-type polyurethane resin.

The anhydrous cargo liquid may have a concentration sufficient to form a slurry by blending with the polyurethane resin. According to one embodiment, it is preferable that sodium fluoride is mixed and dispersed in dimethylformamide as a solvent and sodium sulfate at a concentration of 75% to 80% as an anhydride.

The viscosity of the compounding liquid is preferably 15,000 to 60,000 cps / 25 占 폚 in the first aspect in view of easiness of coating operation and transfer of pattern of release fabric. The second aspect is preferably adjusted to 60,000-70,000 cps / 25 占 폚 in order to secure the thickness of the coating layer for slicing.

The coating can be carried out by a known method in the field, for example a knife over roll coater or the like can be used.

The produced polyurethane foam sheet can be provided as it is or after the microcapsule is padded, and then the process of laminating the dry polyurethane foam sheet and the synthetic resin film. The process for laminating the dry polyurethane foam sheet and the synthetic resin film may be a known method for maintaining a laminated structure such as fusion bonding such as heat fusion or application of an adhesive without any particular limitation.

The padding of the microcapsules in the continuous process may be carried out in the process of producing the polyurethane foam sheet, although the padding process may be carried out after the polyurethane foam sheet is produced as in the batch process.

In the latter case, in the method according to the first aspect, the coating is cured after coating to form a polyurethane coating layer on the release fabric, and a step of peeling the release fabric from the coating fabric on which the coating layer is formed to obtain a polyurethane foam sheet as a cosmetic puff The advantage of the continuous type can be doubled by performing the padding process, and the convenience of the padding process can be ensured.

In the method according to the second aspect, slicing the middle layer of the manufactured laminate, separating the release layer from the laminate having the two-layered structure having the two release-type single-layer and coating layer formed by slicing and forming the polyurethane foam sheet The advantage of the continuous type can be doubled by carrying out the padding process, and the convenience of the padding process can be ensured.

The padding process can be applied in the same manner as described above with reference to the layout formula, and therefore will not be described.

Hereinafter, the present invention will be described more specifically with reference to examples and test examples. It is to be understood that the scope of the present invention is not limited to these embodiments and test examples, and that variations, substitutions, and insertions conventionally known in the art And this is also included in the scope of the present invention.

Example

≪ Example 1 >

1,3-propanediol derived from corn was reacted at a molar ratio of 0.2 / 1.2 / 1.4 with polyoxytetramethylene glycol (DuPont, PO3G, weight average molecular weight: 2,000), methylene diphenyl diisocyanate (molecular weight: 250) Ether-based polyurethane was synthesized. The synthesized polyurethane had a molecular weight of 223,000, a viscosity of 42,000 cps, a modulus of 100% at 25 ° C, and a soft polyether polyurethane of 20 kg / cm ² based on a polyurethane single film thickness of 1 mm.

Thereafter, 266 parts by weight of an anhydrous liquid mixed and dispersed in 75% concentration of sodium sulfate in dimethylformamide was added to 100 parts by weight of the above polyether-based polyurethane resin solution to a release fabric which was woven with a synthetic fiber filament having a fineness of 400 denier The compounding solution was applied using a coater. Thereafter, the coating material was cured to prepare a coating material on which the compound liquid coating layer was formed on the release fabric. The release fabric was peeled off from the coated fabric so as to obtain a polyurethane foam sheet. The physical properties of the prepared polyurethane foam sheet were measured, and the results are shown in Table 1 below.

A polyurethane foam sheet was laminated with a thickness of 0.98 mm, a dry polyurethane 5 mm, and a polyurethane film to prepare a cosmetic puff. The resulting puff was subjected to sensory evaluation as described below.

≪ Example 2 >

1,3-propanediol derived from corn was reacted at a molar ratio of 0.2 / 1.2 / 1.4 with polyoxytetramethylene glycol (DuPont, PO3G, weight average molecular weight: 2,000), methylene diphenyl diisocyanate (molecular weight: 250) Ether-based polyurethane was synthesized. The synthesis of polyurethane having a molecular weight 252,000 and a viscosity of 48,000cps, 25 ℃, 100% Modulus is the polyurethane film with thickness 1mm alone basis 25kg / cm ^2, was synthesized the soft polyether-based polyurethane.

Thereafter, 266 parts by weight of an anhydrous liquid mixed and dispersed in 75% concentration of sodium sulfate in dimethylformamide was added to 100 parts by weight of the above polyether-based polyurethane resin solution to a release fabric which was woven with a synthetic fiber filament having a fineness of 400 denier The compounding solution was applied using a coater. Thereafter, the coating material was cured to prepare a coating material on which the compound liquid coating layer was formed on the release fabric. The release fabric was peeled off from the coated fabric so as to obtain a polyurethane foam sheet. The physical properties of the prepared polyurethane foam sheet were measured, and the results are shown in Table 1 below.

The impregnation solution containing microcapsules 3 μm and 30 μm each containing 1,3-propanediol derived from biomass onto porous silica gel was prepared, placed in a padding bath, and the polyurethane foam sheet was provided in a padding device. The polyurethane foam sheet was padded with an aqueous solution containing about 4% by weight of microcapsules, and the process was carried out.

A polyurethane foam sheet having undergone a padding process was laminated with a thickness of 0.98 mm, a dry polyurethane 5 mm, and a polyurethane film to prepare a cosmetic puff. The resulting puff was subjected to sensory evaluation as described below.

≪ Example 3 >

1,3-propanediol derived from corn, and sebacic acid derived from castor oil were condensed and polymerized in a molar ratio of 1: 1 to synthesize a biopolyester-based polyol having a weight average molecular weight of 2,000. Polyurethane was synthesized by synthesizing the produced biopolyester polyol, methylenediphenyl diisocyanate (molecular weight: 250) and 1,3-propanediol derived from corn at a molar ratio of 0.2 / 1.2 / 1.4. The synthesized polyurethane had a molecular weight of 223,000, a viscosity of 41,000 cps, a modulus of 100% at 25 ° C, and a soft polyurethane based polyurethane having a polyurethane single film thickness of 20 mm / cm ² .

Thereafter, 226 parts by weight of an anhydrous liquid mixed and dispersed in dimethylformamide at a concentration of 75% with respect to 100 parts by weight of the polyester-based polyurethane resin solution was mixed with a release fabric woven with a synthetic fiber filament of a fineness of 350 denier The compounding solution was applied using a coater. Thereafter, the coating material was cured to prepare a coating material on which the compound liquid coating layer was formed on the release fabric. The release fabric was peeled off from the coated fabric so as to obtain a polyurethane foam sheet. The physical properties of the prepared polyurethane foam sheet were measured, and the results are shown in Table 1 below.

The impregnation solution containing microcapsules 3 μm and 30 μm each containing 1,3-propanediol derived from biomass onto porous silica gel was prepared, placed in a padding bath, and the polyurethane foam sheet was provided in a padding device. The polyurethane foam sheet was adjusted to contain about 20% by weight of microcapsules, and the process was carried out.

A polyurethane foam sheet having undergone a padding process was laminated to a thickness of 0.93 mm, a dry polyurethane 5 mm, and a polyurethane film to prepare a cosmetic puff. The resulting puff was subjected to sensory evaluation as described below.

<Comparative Example>

Polyether polyurethane having a biomass content of 0% was prepared by synthesizing a petroleum-based polyether polyol (PTMG-2000), polyisocyanate and ethylene glycol as a petroleum monomolecular diol at a molar ratio of 0.2 / 1.2 / 1.4. The synthesized polyurethane synthesized flexible polyurethane with a molecular weight of 267,000, a viscosity of 45,000 cps, and a modulus of 25 ° C and a 100% modulus of 20 kg / cm ² based on a polyurethane single film thickness of 1 mm.

Thereafter, 266 parts by weight of an anhydrous liquid containing 75% by weight of sodium sulfate dispersed in dimethylformamide was added to 100 parts by weight of the present polyether-based polyurethane resin solution, to a release fabric which was woven with a synthetic fiber filament having a fineness of 300 to 450 denier The mixed compound liquid was applied using a coater. Thereafter, the coating material was cured to prepare a coating material on which the compound liquid coating layer was formed on the release fabric. The release fabric was peeled off from the coated fabric so as to obtain a polyurethane foam sheet. The physical properties of the prepared polyurethane foam sheet were measured, and the results are shown in Table 1 below.

A polyurethane foam sheet was laminated to a thickness of 0.90 mm, a dry polyurethane 5 mm, and a polyurethane film to prepare a cosmetic puff. The resulting puff was subjected to sensory evaluation as described below.

[Table 1]

From the above Table 1, tensile strength tests on the polyurethane foam sheets of Examples 1 to 3, in which the biomass content of the carbon skeleton constituting the polyurethane main chain is 60% or more, are compared with the conventional petroleum-based polyurethane foam sheets It can be seen that all the evaluation items have equivalent properties. Therefore, it can be seen that the elasticity and stretchability required for the cosmetic puff are secured.

On the other hand, the 100% modulus and elongation associated with the softness of the polyurethane foam sheet were comparable to those of the comparative examples, and in Examples 1 and 2, the modulus and elongation were much smoother than the comparative examples. This is presumably due to the physical properties of 1,3-propanediol derived from biomass, and polyether-based polyurethane is more advantageous in securing softness than polyester-based polyurethane. It can thus be seen that improved softness can be imparted to the polyurethane foam sheet and the cosmetic puff comprising it.

It can also be seen that Examples 1 to 3 also have the same or higher performance than conventional petroleum-based raw materials in terms of water absorption, elastic recovery, air permeability, and the like.

Sensory evaluation:

Subjective efficacy evaluations were carried out on 20 to 30-year-old women in Examples 1 to 3 (Examples 2 and 3 were 3 μm microcapsule puffs) and Comparative Example puffs. The subjects were given the same liquid foundation (the tones were provided to suit each skin), and each puff was used to evaluate the softness (soft touch), spreadability, spreadability, and moisturizing properties of the puff. The moisturizing properties were evaluated by evaluating the degree of moisturizing feeling after 3 hours after applying the foundation. The evaluation was made by taking the maximum point as 5 points and the lowest point as 1 point. The following results are the average of the results of each user.

[Table 2]

From Table 2, it can be seen that the cosmetic puff according to the present invention is not much different from the comparative example in spreading and spreading properties, but it is more excellent in terms of softness. On the other hand, it can be seen that the moisturizing property is remarkably excellent. These results are believed to be due to the softness and elasticity of 1,3-propanediol derived from biomass.

Meanwhile, after using the same foundation and puff for one month, the subjects were evaluated for softness through moisturizing property felt by the skin, spreadability of the foundation, cosmetic residue on the puff, and hardness. The evaluation was made by taking the maximum point as 5 points and the lowest point as 1 point. The higher the score, the better. The following results are the average of the results of each user.

[Table 3]

It can be seen from Table 3 that the moisturizing and softness of the cosmetic puff according to the present invention is more prominent when used for a long period of time than the comparative example. It can be seen that Examples 2 and 3, in which the moisture retention was further improved by microcapsules, were superior in softness and persistence of moisturizing property as compared with Example 1. It is presumed that the rinseability was also complemented by the moisturizing properties of 1,3-propanediol derived from the biomass contained in the puff.

The cosmetic puff of the present invention comprises a polyurethane containing 1,3-propanediol derived from biomass as a monomer and a polyurethane foam prepared from a chain extender containing 1,3-propanediol derived from biomass as a monomer Lt; / RTI &gt; Thus, according to the present invention, it is possible to provide a cosmetic puff which is environmentally friendly, excellent in soft touch and moisturizing property, and a method for producing the same.

Claims (16)

A cosmetic puff comprising a polyurethane containing 1,3-propanediol derived from biomass as a monomer and a polyurethane foam made from a chain extender containing 1,3-propanediol derived from biomass as a monomer. The method according to claim 1, Wherein the polyol is a polyester-based polyol or a polyether-based polyol. The method according to claim 1, Characterized in that the polyol is polyoxytrimethylene glycol. The method according to claim 1, Wherein the polyurethane foam is derived from biomass in an amount of 25 to 70% of the carbon skeleton constituting the main chain of the polyurethane. The method according to claim 1, Wherein the polyurethane foam further comprises microcapsules containing 1,3-propanediol derived from biomass as a core substance. 6. The method of claim 5, Characterized in that the polyurethane foam is padded with an aqueous solution containing from 1 to 10% by weight of microcapsules. 6. The method of claim 5, Wherein the 1,3-propanediol derived from the biomass contained in the microcapsule is 100 to 150% by weight based on the total weight of the microcapsules. 6. The method of claim 5, Wherein the microcapsule 1,3-propanediol is adsorbed in a porous silica gel. 6. The method of claim 5, Wherein the microcapsule has a size of 0.5 to 30 占 퐉. The method according to claim 1, Wherein the cosmetic puff further comprises an antimicrobial agent. The method according to claim 1, Wherein the cosmetic puff comprises a dry polyurethane foam and a film laminated in this order under the polyurethane foam. Preparing a polyurethane polymer by addition polymerization of a polyol including a biomass-derived 1,3-propanediol and a chain extender, a polyisocyanate; Kneading and defoaming the dispersion containing the polyurethane polymer, water-soluble fine particles and solvent; Injecting a dispersion liquid obtained by kneading and defoaming into a mold to produce a polyurethane foam molding; And And slicing the polyurethane foam molding. 13. The method of claim 12, Further comprising the step of padding the sliced polyurethane foam formed body with a solution containing microcapsules containing 1,3-propanediol derived from biomass as a center material. Preparing a polyurethane resin solution by addition polymerization of a polyol including a biomass-derived 1,3-propanediol and a chain extender, a polyisocyanate; Mixing 100 to 400 parts by weight of an anhydride with 100 parts by weight of the polyurethane resin solution to prepare a blend; Applying and curing the compounding liquid to a release mold to form a coating layer to obtain a laminate having a two-layer structure having a release mold layer and a coating layer; And And peeling the releasing fabric from the laminate having the two-layer structure to form a polyurethane foam sheet composed of a coating layer. 15. The method of claim 14, Between the step of obtaining the laminate of the two-layer structure and the step of forming the polyurethane foam sheet, the polyurethane coating layer of the laminate of the two-layer structure contains 1,3-propanediol derived from biomass as a central substance And padding the solution with a solution containing one microcapsule. 16. The method according to claim 13 or 15, Wherein the microcapsule-containing solution comprises 1 to 10% by weight of microcapsules, 1 to 5% by weight of a water-soluble urethane-based or acrylic binder, and water in a remaining amount.

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