WO2014046400A1

WO2014046400A1 - Urethane foam impregnated with cosmetic composition

Info

Publication number: WO2014046400A1
Application number: PCT/KR2013/007985
Authority: WO
Inventors: 김경남; 최정선; 최경호; 최영진; 정하진
Original assignee: (주)아모레퍼시픽
Priority date: 2012-09-21
Filing date: 2013-09-04
Publication date: 2014-03-27

Abstract

The present invention relates to a dry polyether-based urethane foam impregnated with a cosmetic composition.

Description

【Specification】

[Name of invention]

Urethane product impregnated with cosmetic composition

Technical Field

The present invention relates to a dry polyether urethane foam impregnated with a cosmetic composition.

Background Art

In the past, the cosmetic composition was mainly used only indoors, but the frequency of using the cosmetic composition even when going out as the lifestyle changes such as the recent leisure activities are increasing. Accordingly, the need for a cosmetic composition that is easy to use and carry is also increasing.

In order to facilitate the use and portability of the cosmetic composition, the cosmetic composition was impregnated with the swatches of various materials, but it was not easy to find a material having excellent durability, layer strength, loading capacity, and discharge power. Therefore, it is necessary to develop a material suitable for impregnating a cosmetic composition.

[Detailed Description of the Invention]

[Technical problem]

The present invention seeks to provide a dry polyether-based urethane foam suitable for impregnating a cosmetic composition.

Technical Solution

One aspect of the present invention provides a dry polyether urethane product impregnated with a cosmetic composition.

Another aspect of the present invention provides a cosmetic comprising a dry polyether-based urethane product impregnated with the cosmetic composition.

Advantageous Effects

The dry polyether urethane foam according to the present invention has excellent durability, filling and discharging power when the cosmetic composition is impregnated, and thus is suitable for impregnating the cosmetic composition.

[Brief Description of Drawings]

1 is a graph showing the layer strength of dry polyether urethane foam and wet polyether urethane foam according to hardness.

2 is a dry polyether-based urethane product and wet polyether-based urethane according to hardness It is a graph showing the discharge power of the product.

Figure 3 is a photograph showing a cosmetic comprising a dry polyether-based urethane foam impregnated with a cosmetic composition of one embodiment of the present invention.

Figure 4 is a schematic diagram showing a process of forming a network structure of a dry polyether-based urethane foam which is an embodiment of the present invention.

[Best form for implementation of the invention]

One aspect of the present invention provides a dry polyether-based urethane foam impregnated with the cosmetic composition. In another aspect of the present invention, the dry polyether-based urethane product may function as a carrier for supporting and maintaining the cosmetic composition. In the present specification, the "urethane foam" is solidified after foaming a polyurethane resin, it may be expressed as "foamed urethane".

In the present specification, "durability"'means the degree to which the urethane foam can be maintained without melting, tearing or expanding when the cosmetic composition is supported in a urethane product and left for a certain time under a predetermined temperature. In, "filling power" means the ability of the urethane product to layer the cosmetic composition, it can be represented by the time required for a certain amount of the cosmetic composition layered on the urethane product. In the present specification, "discharge output" means the amount of the cosmetic composition discharged when taking the cosmetic composition from the urethane foam carrying the cosmetic composition, it is preferable to discharge a suitable amount of cosmetic composition of not much. Urethane products can be divided into polyester urethane products and polyether urethane products.Polyether-based urethane products are stronger in humidity than polyester-based urethane products, and do not break well under high humidity conditions and have high stability. Ether-based urethane products have a larger cell structure than polyester-based urethane products, and have high air permeability, softness, softness, and flexibility. In comparison with the present invention, it is excellent in economic efficiency. Ether-based urethane products are for impregnating cosmetic compositions, which are different from conventional cosmetic applicators (also called puffs or cosmetic sponges). The purpose of the application, that is, the purpose of delivering a cosmetic to the skin by applying a separate cosmetic to the applicator by contacting the applicator itself with the skin, and in itself does not contain a cosmetic composition, The impregnating material of the cosmetic composition impregnated with the cosmetic composition is impregnated with the cosmetic composition itself before being used by the user (requires durability and layering resistance), and when the user uses the appropriate amount of the cosmetic composition, Should be buried in the 'cosmetic applicator' (exhaustability required), the impregnating material of the cosmetic composition of the present invention is not to be in direct contact with the skin, but impregnated with the cosmetic composition to use a separate applicator. Therefore, the 'cosmetic applicator', that is, 'puff' is difficult to penetrate the cosmetic to the inner part of the sponge, if the cosmetic composition penetrates deep into the inner part of the sponge, since the user is not easily applied to the skin during use. Should. On the other hand, the cosmetic composition of the present invention is impregnated, the product is impregnated with the cosmetic composition, the impregnation itself is an important function, it is clearly distinguished from the cosmetic applicator (puff).

Figure 3 is a product containing the impregnating material of the cosmetic composition impregnated with the cosmetic composition of the present invention, it indicates that the cosmetic applicator may be further included in the product in addition to the impregnating material. . Polyether urethane products can be divided into dry polyether urethane products and wet polyether urethane products according to the production method. The dry sponge is a process that requires precision because the cell structure and hardness of the product can be deformed according to the amount of gas injected by inserting the product block into the gas chamber and injecting and detonating it. The wet sponge is impregnated into a container filled with liquid (chemicals) and then chemically opened, and is mainly used in the production of soft foam products, and is an expensive process because of the variety of liquids used. Dry polyether urethane products generally have a larger pore size than wet polyether urethane products. Wet polyether urethane products are foamed wet and their surface properties are hydrophilic, whereas the surface properties of dry polyether urethane products are lipophilic. Dry polyether urethanes are commercially available under the trade name EZ93N®. Dry polyether-based urethane products have superior layering and ejection forces when the cosmetic composition is supported, compared to wet polyether-based urethane foam, and are suitable for impregnating the cosmetic composition. Therefore, the present invention is not a cosmetic applicator, cosmetic tank It provides a dry polyether-based urethane foam with the unique properties required as a material impregnation material. In one aspect of the invention, the dry polyether-based urethane product is at least 5, 10 or more, 15 or more, 20 or more, 25 or more, 30 or more, 30 or more, 35 or more based on ASKER hardness type F (Type F) It may have a hardness of at least 40 or at least 45. According to another aspect of the present invention, a dry polyether urethane product may have an ASKER hardness tester of F type based on 80 or less, 75 or less, 70 or less, 65 or less, 60 or less, 60 or less, 55 or less, It may have a hardness of 50 or less or 45 or less. In another aspect of the present invention, the polyether urethane foam is based on the ASKER hardness group Type F (F) of 5 to 80 or less specifically 10 to 70 or less, more specifically 30 to 60 or less More specifically, it may have a hardness of 35 to 55 or more. The hardness range of the dry polyether urethane product means the hardness of the dry polyether urethane product before the cosmetic composition is laminated. If the dry polyether-based urethane foam has the above hardness range before the cosmetic composition is laminated, the durability is excellent, and in particular, it is possible to exert an excellent effect in terms of layer strength and discharge power. The dry polyether urethane article of the present invention may have a pore number (ppi) of at least 70, at least 75, at least 80, at least 85, at least 88, or at least 90 per inch. In another aspect of the present invention, the dry polyether-based urethane foam may have a pore number of 110 or less, 108 or less, 105 or less, 103 or less or 100 or less per inch. In another aspect of the invention, the dry polyether-based urethane foam has a pore number of 70 to 110 or less per pore, specifically 80 to 105 or less pores, more specifically 85 to 103 or less pores It can have When the pore number of the urethane product is less than 70 ppi, the elasticity of the product is low, it is inconvenient to use, and it is difficult to control the fluidity of the cosmetic composition, and when the pore number is more than 110 ppi, durability and usability of the impregnated cosmetic composition may be low. In one aspect of the invention, the urethane product may have a reticulated structure. At this time, it is easy to uniformly impregnate the cosmetic composition to the urethane product and the impregnation rate is higher. In the present invention, the urethane product of the reticular structure is to form the product itself into a reticulated structure by a separate process, and the reticulated structure is also called a three-dimensional reticulated neck structure. Reticualized structure is a form transformed into a mesh structure through the process of reticulation of the membrane (wall) of the cells in the form of balloons after foaming, and it is possible to absorb and discharge liquids as well as air permeation. Structure. "Reticulation" is a process of transforming the product structure into a mesh structure according to the use after foaming, and in the case of sponge products, the process of "meshing ¹ " by bursting the walls of each bubble. ^ 113 011) "process is shown in Fig. 4. Therefore, the network structure of the present invention is a completely different structure from the conventional product structure in which a three-dimensional membrane structure is formed in a sponge to prevent cosmetics from penetrating deep inside. In addition, the urethane foam member has a structure different from that of 'covering' with a cloth, net, nonwoven fabric, etc. In one aspect of the present invention, the urethane product may have an open cell structure.

In general, a urethane product manufactured through a foaming and aging process has a closed cell or semi-open cell structure. When the urethane product has a closed cell structure, it is preferable to have an open cell structure because bubbles are not trapped in the urethane and the low viscosity emulsified cosmetic composition is not easily impregnated. The present invention may have a complete open cell structure in which only a frame remains by popping a cell surface of a product through the above-described reticulation process. The dry polyether-based urethane product of the reticulated structure of the present invention has a softer texture than the wet urethane foam, and because of the characteristics of the reticulated structure, the open cell structure has opened the cell surface. Since it is not, a soft feel is not necessarily required, and the dry polyether urethane foam having such a mesh structure has excellent layering force and discharge power, and thus can be used as a cosmetic composition impregnating material.

In one aspect of the present invention, "pore number" refers to the number of pores per inch of urethane foam, the number of pores in the present specification using the WI-QA-14 (ASTM standard) in the horizontal, vertical 1 tooth It can be the average of the number of pores in the measurement.

The higher the ppi value, the smaller the pore size. Pore count is visual perception As a result, the recognition of the pore may vary depending on the state of the pore recognized by country. For example, Visual Counting Method (ppi check) in Japan, the United States, and Europe is shown in Table 1 below.

Table 1

Visual Counting Method (ppi check)

Throughout this specification, ppi is represented using the American Visual Counting Method. Therefore, the ppi of the urethane foam according to one aspect of the present invention is about 30 ppi different from the ppi measured when using the Japanese Visual Counting Method.

Cell size in the present invention is the average value measured by an optical microscope (NIKON ECLIPSE 80i).

In one aspect of the present invention, the dry polyether urethane foam may have a density of at least 1, at least 1, at least 3, at least 1.5, or at least 1.8 pcf (pounds per cubic feet). In another aspect of the present invention, the dry polyether urethane product may have a density of 3 or less, 2.8 or less, 2.5 or less, 2.3 or less, or 2 or less pcf. In another aspect of the present invention, a dry polyether urethane The article may have a density of 1 to 3 pcf (pounds per cubic feet), specifically 1 to 2 pcf. If the density of the urethane foam is less than 1 pcf, the cosmetic composition may be excessively discharged and inconvenient to use. If the density exceeds 3 pcf, the cosmetic composition may be effectively impregnated due to the lack of pores that may impregnate the cosmetic composition. It can be difficult to be. In this specification, the density may be a value measured by the ASTM D3574 method. In one aspect of the invention, at least 4 cm, at least 4.2 cm, at least 4.4 cm or at least 4.6 cm and at most 5 cm, at most 4.9 cm or at most 4.8 cm and at least 0.5 cm, at least 0.6 cm or at least 0.8 cm and 2 cm or less ， 1.8 cm or less ， 1.5 cm or less ， 1.3 cm or less The dry polyether urethane foam having a thickness of 1 cm or less has a viscosity of 5,000 to 15,000 cps (centi poise) within 3 seconds or more and 4 seconds or more and 10 seconds or less, 8 seconds or less, or 6 seconds or less. 10 g or more, 13 g or more or 15 g or more and 20 g or less, 18 g or less or 16 g or less can be layered. In another aspect of the invention, at least 4 cm, at least 4.2 cm, at least 4.4 cm or at least 4.6 cm and at most 5 cm, at most 4.8 cm or less, at most 4.8 cm and at least 0.5 cm, at least 0.6 cm or at least 0.8 cm And when the dry polyether-based urethane product having a thickness of 2 cm or less, 1.8 cm or less, 1.5 cm or less, 1.3 cm or less, or 1 cm or less carries a cosmetic composition having a viscosity of 5,000 to 15,000 cps. Cosmetic compositions of 0.2 g or more, 0.3 g or more or 0.4 g or more and 0.7 g or less, 0.6 g or less or 0.5 g or less can be discharged.

In one aspect of the invention, the cosmetic composition that can be impregnated into a dry polyether-based urethane product is a liquid cosmetic composition, specifically WAX type water in oil) or 0 / W (oil in water) type Cosmetic composition of the present invention.

In one aspect of the invention, the cosmetic composition may have a viscosity of 5,000 to 15,000 cps (centi poise), specifically 7,000 to 13,000 cps, more specifically 8,000 to 12,000 cps, even more specifically 9,000 to 11,000 cps. When the cosmetic composition has the above viscosity range, not only is it suitable for exhibiting the intended effect of the present invention, but also the dry polyether-based urethane foam may exhibit excellent properties, and has a viscosity in the above range in terms of cost-effectiveness. May be appropriate. In the present invention, the viscosity can be measured with a viscosity measuring instrument, for example LVDV Π + PR0 or RVDV III ULTRA, spindle N0. 63 or spindle N0. 64, the speed may be a value measured at 5 RPM or 12 RPM, but is not particularly limited thereto. Viscosity values can be changed by measuring instruments, spindles, or RPMs. One aspect of the present invention provides a cosmetic comprising a dry polyether-based urethane product impregnated with the cosmetic composition. The cosmetics by applying the cosmetic composition to a dry polyether-based urethane product according to an aspect of the present invention, the cosmetic composition is well layered, while taking an appropriate amount of cosmetic composition when taking the cosmetic composition, while maintaining excellent durability for a long time Can be. In one aspect of the invention, the cosmetic composition includes a cosmetic composition for skin care or a cosmetic composition for makeup, specifically, a makeup primer, makeup base, foundation, powder, two cakes, lipstick, Lip Gloss _Eyeshadow® Eyebrow Concealer, Lip Liner _Shock Blusher, _Sunscreen , Lotion, Cream or Essence, more specifically Makeup Primer, Makeup _Base , Liquid or Solid Foundation, Powder, Twice Cake, Lipstick, Lip Gloss It may be formulated as an eye bird, eyebrow, concealer or blusher, but is not limited thereto. Cosmetics according to another aspect of the present invention is a container including a lower portion for storing a dry polyether-based urethane product and an upper portion of the cover to which a mirror or the like can be attached, generally referred to simply as a "fact" It may be provided as. In another aspect of the present invention, when a cosmetic product including a dry polyether-based urethane product impregnated with a sunscreen is provided as a fact, it is very simple to use and carry compared to other sunscreen cosmetics, and also has a cornering effect. It may be more preferable in that it can give. Hereinafter, the structure and effect of the present invention will be described in more detail with reference to Examples, Comparative Examples and Experimental Examples. However, the following Examples, Comparative Examples and Experimental Examples are provided only for the purpose of illustration to assist in understanding the present invention, but the scope and scope of the present invention is not limited thereto.

[Examples and Comparative Examples]

A dry polyether urethane foam and a wet polyether urethane product prepared by a general method of the art were prepared. The characteristics of each urethane product are shown in the table below. The density in Table 2 was measured by ASTM D3547.

Table 2

Experimental Example 1 Evaluation of Durability The durability of the dry polyether urethane product as an example and the wet polyether urethane product as a comparative example was compared. The specific experimental method is as follows.

The urethane articles of Examples and Comparative Examples were rounded to a diameter of 48 mm X 10 mm thick and then impregnated with 15 g of the same cosmetic composition having a viscosity of 10,000 cps. After standing at 55 ^° C for 7 days, the state was confirmed. The results are shown in the table below. The method for measuring the viscosity of the cosmetic composition may be a viscosity measuring device, for example LVDV π + PRO or RVDV III ULTRA, spindle NO. 63 or spindle NO. 64, may be a value measured at a speed of 5 RPM or 12 RPM.

Table 3

As can be seen from the above, the dry polyether-based urethane product remained in a good state even after impregnating the cosmetic composition, and was excellent in durability.

Experimental Example 2 Evaluation of Filling Force

The layer strength of the dry polyether urethane product and the wet polyether urethane foam were compared. Specifically, the hardness of each urethane product before impregnating the cosmetic composition based on the ASKER hardness tester Type F was measured, and each of the dry polyether urethane foam and the wet polyether urethane foam was 48 mm in diameter. After a round of X thickness 10 mm, the time taken to impregnate 15 g of the same cosmetic composition with a viscosity of 10,000 cps was measured. The viscosity of the cosmetic composition is Spindle Number (Spindle Number) No. Measured with LVDV Π + PRO set at 63 and Spindle Speed (RPM) 5 rpm. The results are shown in the table below and in FIG. 1.

Table 4

As can be seen from the above results, the dry polyether-based urethane product is an asker

(ASKER) Hardness Tester When showing the hardness of the F type (Type F) standard 30 to 55, the layering time of the cosmetic composition was short to 10 seconds or less. On the other hand, the wet polyether-based urethane foam shows that the higher the hardness, the longer the stratification and the lower the stratification force.

Experimental Example 3 Evaluation of Discharge Force

(1) Optimal emission investigation

First, in order to investigate the appropriate amount of cosmetic composition in a single discharge, the general public is allowed to apply various amounts of the cosmetic composition to the general public, and then 1 to 9 points for each item that can derive the optimum emissions. Higher is better) and the results are shown in the table below. "Coating" refers to the amount of skin suitable for application, "cosmetic effect" 'is a good coverage, but does not stick to the uniform make-up, and means that the make-up in a suitable time, "convenience" means It is not necessary to take cosmetic composition several times, and it is convenient to control the amount when applying, and "satisfaction" means overall satisfaction degree. "

Table 5

As can be seen from the above, when the amount of the single coating of the cosmetic composition is 0.3 to 0.5 g, especially about 0.5 g, the applicability, makeup effect and ease, and further, the satisfaction was high. Therefore, it can be seen that if one can take 0.3 to 0.5 g, especially about 0.5 g when the cosmetic composition is taken.

(2) evaluating force

The discharge power of the dry polyether urethane product and the wet polyether urethane product was compared. Specifically, after measuring the hardness before impregnating the cosmetic composition based on the ASKER hardness tester F (Type F), the same viscosity of 10,000 cps to dry polyether urethane foam and wet polyether urethane foam The cosmetic composition was sufficiently supported, and the amount (g) of the cosmetic composition discharged when taken once using a puff was measured. The results are shown in the table below and in FIG. 2.

Table 6

As can be seen from the above results, both the dry polyether and wet polyether urethane products showed a tendency to decrease the amount of the cosmetic composition discharged to the puff with increasing hardness. In the case of the dry polyether urethane foam, 0.3 to 0.5 g when the hardness is 30 to 60 or less, specifically 35 to 55 or less, based on the ASKER hardness tester Type F before impregnation of the cosmetic composition. It showed a single discharge of, showing excellent discharge power. On the other hand, wet polyether-based urethanes have an inferior discharge power due to a significant decrease in the one-time discharge of the cosmetic composition from when the hardness of the ASKER hardness type F before the cosmetic composition is impregnated is 35 or more. Seemed. Based on the above results, the durability, laminar strength, and ejection force of the dry polyether urethane and wet polyether urethane were compared.

Table 7

As such, the dry polyether-based urethane product exhibits excellent durability, layer strength, and ejection force, and thus is preferable for impregnating a cosmetic composition.

Claims

[Range of request]

[Claim 1]

Dry polyether urethane product impregnated with a cosmetic composition.

[Claim 2]

The method of claim 1,

Dry polyether urethane foam is a dry polyether urethane product having a hardness of 10 to 70 based on the ASKER hardness type F before impregnating the cosmetic composition.

[Claim 3]

The method of claim 1,

Dry polyether urethane foam is a dry polyether urethane product having a network structure.

[Claim 4]

The method of claim 1,

Dry polyether urethane is a dry polyether urethane that has a pore number of 70 to 110 per inch.

[Claim 5]

The method of claim 1,

The cosmetic composition is a dry polyether urethane product having a viscosity of 5,000 to 15,000 cps (cent i poise).

[Claim 6]

Cosmetics containing a dry polyether urethane foam impregnated with a cosmetic composition.