KR102649230B1 - Eco-friendly polyurethane soft foam and Manufacturing Method Thereof - Google Patents

Abstract

The present invention relates to an eco-friendly polyurethane foam and a method for manufacturing the same, comprising a first polyol containing carbon dioxide, a second polyol with a number average molecular weight of 2,000 g/mol to 6,000 g/mol, and a number average molecular weight of 3,000 g/mol to 6,000. It includes a structure formed by foaming a polyol mixture containing g/mol of a third polyol, a vegetable raw material, and an antibacterial agent, and pores distributed within the structure, and is characterized by an open cell structure. .

Description

Eco-friendly polyurethane foam and manufacturing method thereof {Eco-friendly polyurethane soft foam and Manufacturing Method Thereof}

The present invention relates to an eco-friendly polyurethane foam and a manufacturing method thereof. In particular, it provides an eco-friendly polyurethane foam containing carbon dioxide polyol and a manufacturing method thereof, and provides a cosmetic product comprising the eco-friendly polyurethane foam manufactured by the manufacturing method. It's about tools.

Polyurethane is a polymer compound containing urethane (-NHCOO-) bonds produced through the polyaddition reaction of polyol and isocyanate. Polyol is used to produce the polyurethane, and polyol generally refers to a liquid polymer material with two or more alcohol groups (-OH) attached to the end of the hydrocarbon chain. The polyol is largely divided into two types. When polymerized, if it has an ether bond, it is classified as polyether polyol, and if it has an ester bond, it is classified as polyester polyol. These polyols are essentially used in the production of polyurethane, and are usually manufactured from petroleum-based raw materials. However, recently, due to the problem of depletion of oil resources and the problem of reducing greenhouse gases related to environmental protection, the demand for eco-friendly and renewable materials is increasing. To this end, it is necessary to manufacture polycarbonate polyol using carbon dioxide, a representative greenhouse gas, as a raw material. Various studies are being conducted.

For example, in order to synthesize a polyol, copolymer polycarbonate polyol was synthesized through a reaction between an epoxy compound and carbon dioxide, but it has the disadvantages of difficulty in controlling the molecular weight, the production of by-products corresponding to the epoxy compound used, and the need to use an expensive catalyst.

In addition, research is being conducted on polyol synthesis using five-membered ring carbonate compounds such as ethylene carbonate or propylene carbonate, but the reaction temperature during polyol synthesis is high at 150°C to 200°C, and not only is the conversion rate of polyol low, but the reaction temperature is high during the reaction. There is a disadvantage in that carbonate groups at the ends are decomposed during the initiation or growth stage and carbon dioxide is generated as a by-product.

Meanwhile, the polyurethane can be divided into two types: foam and non-foam. In the case of foam-type polyurethane, the structure, type, content, and block length of the soft phase and hard phase are , it is a material with various physical properties depending on the degree of fine phase separation, and molecular design is possible. Among them, soft polyurethane foam is used as a cosmetic carrier. The cosmetic carrier is made by impregnating a liquid cosmetic composition into soft polyurethane foam, eluting it when necessary, and applying it to the desired area. At this time, in the case of cosmetic loading, several compositions must be impregnated at the same time, and the necessary ingredients must be properly eluted so that they can be used.

Accordingly, the present invention seeks to provide an eco-friendly polyurethane with improved dissolution effect using polycarbonate polyol, a manufacturing method thereof, and a method of utilizing the polyurethane manufactured by the above manufacturing method.

The purpose of the present invention is to provide an eco-friendly polyurethane foam and a method for manufacturing the same.

Additionally, the object is to provide an eco-friendly polyurethane foam with improved hydrophilicity and a method for manufacturing the same.

In addition, the object is to provide a cosmetic tool containing an eco-friendly polyurethane foam that supports cosmetics containing a sunscreen and has improved dissolution effect.

However, these tasks are illustrative and do not limit the scope of the present invention.

According to one aspect of the present invention for achieving the above object, a first polyol containing carbon dioxide, a second polyol having a number average molecular weight of 2,000 g/mol to 6,000 g/mol, and a number average molecular weight of 3,000 g/mol to 6,000 A cosmetic carrier comprising a structure formed by foaming a polyol mixture containing g/mol of a third polyol, a vegetable raw material, and an antibacterial agent, and pores distributed within the structure, and having an open cell structure. We provide soft polyurethane foam.

According to one embodiment of the present invention, the first polyol is represented by the following formula (1) and may be formed by reacting a starter and a 5-membered ring carbonate prepared in the presence of an ionic liquid catalyst.

[Formula 1]

According to one embodiment of the present invention, the starter may be a compound containing two or more primary amines or secondary amines.

According to one embodiment of the present invention, the molecular weight of the first polyol is controlled by polymerizing epoxide, and the molecular weight of the first polyol may be 1,000 g/mol to 5,000 g/mol.

According to one embodiment of the present invention, the density of the flexible polyurethane foam may be 20 kg/m ³ to 50 kg/m ³ .

According to one embodiment of the present invention, the hardness of the flexible polyurethane foam may be 10 kgf/cm ² to 50 kgf/cm ² .

According to one embodiment of the present invention, the rebound elasticity of the flexible polyurethane foam may be 20% to 40%.

According to one embodiment of the present invention, the number of pores of the flexible polyurethane foam may be 30 ppi to 90 ppi.

According to one embodiment of the present invention, the elongation rate of the flexible polyurethane foam may be 50% to 150%.

According to another aspect of the present invention, producing a first polyol using a 5-membered ring carbonate prepared in the presence of an ionic liquid catalyst, the first polyol, the second polyol, the third polyol, a vegetable raw material, and an antibacterial agent. A method for producing a flexible polyurethane foam for a cosmetic carrier comprising: forming a polyol mixture by mixing, forming a foam by adding toluene diisocyanate (TDI), and modifying the foam. to provide.

According to one embodiment of the present invention, the step of preparing the first polyol is represented by the following chemical equation 1, wherein polycarbonate polyol is produced by reacting a 5-membered ring carbonate prepared in the presence of an ionic liquid catalyst and a starter. It may include the step of polymerizing the polycarbonate polyol and epoxide.

[Chemical equation 1]

According to one embodiment of the present invention, the first polyol may be contained in an amount of 0.3 wt% to 35 wt% based on polyurethane foam.

According to one embodiment, the second polyol includes a polyether-based polyol with a number average molecular weight of 2,000 g/mol to 6,000 g/mol, and the second polyol has 15 wt% to 55 wt based on polyurethane foam. It may be included as a %.

According to one embodiment, the third polyol includes a polymer polyol (SAN: 30 wt% to 50 wt%) having a number average molecular weight of 3,000 g/mol to 6,000 g/mol, and the third polyol is a polyol mixture. As a standard, it may be included from 30wt% to 60wt%.

According to one embodiment, the vegetable raw material may include one or more selected from soy bean oil-derived polyol and castor oil-derived polyol.

According to one embodiment, the vegetable raw material may contain 0.1 wt% to 10 wt% based on the polyol mixture.

According to one embodiment, the antibacterial agent may include one or more selected from the zinc-based, silver-based, and copper-based.

According to one embodiment, the antibacterial agent may be included in an amount of 0.1 wt% to 10 wt% based on the polyol mixture.

According to one embodiment, the step of forming the foam may further include a foam catalyst.

According to one embodiment, the reforming step may be reticulation of the expanded foam.

According to one embodiment, the film forming treatment may be reforming closed cell foam into open cell foam.

According to one embodiment, the film forming process includes the steps of introducing foam into a vacuum chamber, forming a vacuum inside the vacuum chamber, introducing hydrogen gas and oxygen gas into the vacuum chamber where the vacuum is formed, and flame It may include the step of removing the film through ignition.

According to another aspect of the present invention, a cosmetic tool including a cosmetic carrier and a cosmetic agent impregnating the cosmetic carrier is provided.

According to one embodiment, the cosmetic carrier is a first polyol containing carbon dioxide, a second polyol with a number average molecular weight of 2,000 g/mol to 6,000 g/mol, and a number average molecular weight of 3,000 g/mol to 6,000 g/mol. It may include a structure formed by foaming a polyol mixture containing a third polyol, a vegetable raw material, and an antibacterial agent, and pores distributed within the structure, and may have an open cell structure.

According to one embodiment, the density of the cosmetic carrier is 20 kg/m ³ to 50 kg/m ³ , the hardness is 10 kgf/cm ² to 50 kgf/cm ² , the rebound elasticity is 20% to 40%, and the average pore is The (pore) number may be 30ppi to 90ppi, and the elongation rate may be 50% to 150%.

The present invention has the effect of providing an eco-friendly polyurethane foam and a manufacturing method thereof.

In addition, there is an effect of providing an eco-friendly polyurethane foam with improved hydrophilicity and a manufacturing method thereof.

In addition, there is an effect of providing a cosmetic tool containing eco-friendly polyurethane foam that supports cosmetics containing sunscreen and has improved dissolution effect.

Further scope of applicability of the present invention will become apparent from the detailed description that follows. However, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art, the detailed description and specific embodiments, such as preferred embodiments of the present invention, should be understood as being given by way of example only.

Figure 1 is a schematic diagram showing the structure of flexible polyurethane foam according to one embodiment.
Figure 2 is a flow chart showing a method of manufacturing flexible polyurethane foam according to one embodiment.
Figure 3 is an image of flexible polyurethane foam before and after modification according to one embodiment.

Hereinafter, the present invention will be described in detail with reference to embodiments of the present invention and drawings. These examples are merely illustrative instructions to explain the present invention in more detail, and it will be obvious to those skilled in the art that the scope of the present invention is not limited by these examples. will be.

Additionally, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains, and in case of conflict, this specification including definitions The description will take precedence.

In order to clearly explain the proposed invention in the drawings, parts unrelated to the description have been omitted, and similar reference numerals have been assigned to similar parts throughout the specification. And when it is said that a part “includes” a certain component, this does not mean that other components are excluded, but that it can further include other components, unless specifically stated to the contrary. In addition, the “part” described in the specification refers to one unit or block that performs a specific function.

Identification codes (first, second, etc.) for each step are used for convenience of explanation. The identification codes do not describe the order of each step, and each step does not clearly state a specific order in context. It may be carried out differently from the order specified above.

That is, each step may be performed in the same order as specified, may be performed substantially simultaneously, or may be performed in the opposite order.

Figure 1 is a schematic diagram showing the structure of flexible polyurethane foam 100 according to one embodiment.

Referring to Figure 1, the flexible polyurethane foam 100 for a cosmetic carrier includes a structure 110 formed by foaming a polyol mixture containing polyol, vegetable raw materials, and antibacterial agents, and pores 120 distributed within the structure. Includes.

In detail, the flexible polyurethane foam 100 includes a first polyol represented by the following formula (1), a second polyol with a number average molecular weight of 2,000 g/mol to 6,000 g/mol, and a number average molecular weight of 3,000 g/mol to 6,000. It includes a structure 110 formed by foaming a polyol mixture containing g/mol of a third polyol, a vegetable raw material, and an antibacterial agent, and pores 120 distributed within the structure, and has an open cell structure. Do it as

[Formula 1]

At this time, the density of the flexible polyurethane foam 100 formed by the foaming is 20 kg/m ³ to 50 kg/m ³ and the hardness is 10 kgf/cm ² to 50 kgf/cm ² . In addition, the flexible polyurethane foam has a rebound elasticity of 20% to 40%, an average pore number of the flexible polyurethane foam of 30ppi to 90ppi, and an elongation rate of 50% to 150%.

Below, the manufacturing method of flexible polyurethane foam according to the present invention will be described in detail.

Figure 2 is a flow chart showing a method (S100) for manufacturing flexible polyurethane foam according to an embodiment.

Referring to Figure 2, the method for manufacturing flexible polyurethane foam (S100) includes preparing the first polyol (S110), forming a polyol mixture (S120), forming a foamed foam (S130), and foamed foam. It includes a step of reforming (S140).

The step of preparing the first polyol (S110) is represented by the following chemical equation 1, and is a step of preparing a polycarbonate polyol by reacting a 5-membered ring carbonate prepared in the presence of an ionic liquid catalyst and a starter, and the polycarbonate polyol It is characterized by comprising a polymerization step.

[Chemical equation 1]

The five-membered ring carbonate is produced by reacting epoxide and carbon dioxide in the presence of an ionic liquid catalyst.

Specifically, the five-membered ring carbonate is converted into propylene oxide, epichlorohydrin, allyl glycidyl ether, and glycidol in the presence of the ionic liquid catalyst. It is characterized in that it is formed by reacting carbon dioxide and an epoxide containing at least one selected from the group consisting of.

For example, the method for producing the 5-membered ring carbonate is represented by the following chemical equation 2, where epoxide and carbon dioxide react in the presence of an ionic liquid catalyst to form a 5-membered ring carbonate (cyclic carbonate). there is.

[Chemical equation 2]

In Chemical Scheme 2, R includes a straight or branched C1-C10 alkyl group.

The starter is characterized as a compound containing two or more primary amines or secondary amines. For example, the starter preferably contains at least one selected from the Jeffamine series.

The step of polymerizing the polycarbonate polyol is characterized by controlling the molecular weight by polymerizing the polycarbonate polyol and the epoxide. For example, the molecular weight of the polycarbonate polyol may be 1000 g/mol to 5000 g/mol, but is not limited thereto, and is preferably controlled to a level that does not affect the viscosity when forming foam.

Meanwhile, the epoxide included to polymerize the polycarbonate polyol is a group consisting of propylene oxide, epichlorohydrin, allyl glycidyl ether, and glycidol. It is characterized in that it contains one or more types selected from. In detail, in order to polymerize the polycarbonate polyol, it is preferable to select the epoxide contained in the epoxide to produce the 5-membered ring carbonate.

For example, to produce the first polyol, the propylene oxide and carbon dioxide are reacted in the presence of an ionic liquid catalyst to produce propylene carbonate, a five-membered ring carbonate, and the propylene carbonate and the starter are reacted to produce poly. Carbonate polyol can be produced. At this time, in order to control the molecular weight of the polycarbonate polyol, the polycarbonate polyol may be polymerized by adding propylene oxide included in the production of the 5-membered ring carbonate.

The step of forming the polyol mixture (S120) is characterized in that the first polyol, the second polyol, the third polyol, the vegetable raw material, and the antibacterial agent are mixed to form the polyol mixture.

The first polyol is characterized in that it contains 0.3 wt% to 35 wt% based on the polyol mixture. For example, if the first polyol is included in less than 0.3 wt%, there is no control effect on the dissolution of cosmetics, and if it is included in more than 35 wt%, shrinkage of the flexible foam may occur.

The second polyol includes a polyether-based polyol having a number average molecular weight of 2,000 g/mol to 6,000 g/mol, and the second polyol is characterized in that it contains 15 wt% to 55 wt% based on the polyol mixture. do. For example, if the second polyol is included in less than 15 wt%, the viscosity increases, making it difficult to form foam, and if it is included in more than 55 wt%, hardness may decrease.

The third polyol includes a polymer polyol (SAN: 30 wt% to 50 wt%) having a number average molecular weight of 3,000 g/mol to 6,000 g/mol, and the third polyol is 30 wt% to 60 wt based on the polyol mixture. It is characterized by being included in %. For example, if the third polyol is included in less than 30 wt%, the hardness of the product may decrease, and if it is included in more than 60 wt%, the hardness of the product is so high that it cannot be used.

The vegetable raw material is characterized in that it contains at least one selected from polyols derived from soy bean oil and polyols derived from castor oil. More specifically, the vegetable raw material serves as an eco-friendly material, and the vegetable raw material is characterized in that it contains 0.1 wt% to 50 wt% based on the polyol mixture. For example, if the vegetable raw material is included in less than 0.1 wt%, the effect of using eco-friendly raw materials cannot be expected, and if it is included in more than 50 wt%, it cannot be commercialized due to the effect of physical properties.

The antibacterial agent is characterized in that it contains at least one selected from the zinc series, silver series, and copper series. In detail, the antibacterial agent improves the antibacterial properties of the flexible polyurethane foam, and the antibacterial agent is contained in an amount of 0.1 wt% to 10 wt% based on the polyol mixture. For example, if the antibacterial agent is included in less than 0.1 wt%, it cannot exhibit antibacterial properties, and if it is included in more than 10 wt%, it affects foam foaming and normal foam cannot be manufactured.

The step of forming the expanded foam (S130) is characterized by adding a curing agent to the polyol mixture to form the expanded foam. At this time, a blowing agent and a foaming catalyst may be further included to form the foam, and the foaming catalyst may include a metal catalyst and an interfacial stabilizer.

In detail, as a curing agent is added to the polyol mixture and stirred, a reaction begins to form a foam, and the pores and physical properties of the foam can be controlled by adding the blowing agent and the foaming catalyst.

At this time. It is preferable to use an isocyanate series as the curing agent, for example, toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), etc.

The step of modifying the foam (S140) is to film-form the foam, which involves modifying the foam with a closed cell pore structure to have an open cell pore structure. It is characterized by

Specifically, in order to form a film on the foam, it is preferable to put the foam into a vacuum chamber to form a vacuum, then add hydrogen and oxygen gas, and then remove the film through spark ignition. At this time, as the expanded foam is treated with a film, the closed cells are removed, thereby improving the breathability of the soft polyurethane foam. As the breathability is improved, the carrying efficiency of the supporting liquid can be improved. In other words, as the film is formed, the ventilation is improved and the amount of support liquid increases.

Below, cosmetic tools containing the soft polyurethane foam will be described in detail.

The cosmetic tool includes a cosmetic material and includes a cosmetic carrier and a cosmetic agent for impregnating the cosmetic carrier.

The cosmetic carrier includes a first polyol containing carbon dioxide, a second polyol with a number average molecular weight of 2,000 g/mol to 6,000 g/mol, a third polyol with a number average molecular weight of 3,000 g/mol to 6,000 g/mol, and vegetable raw materials. and a soft polyurethane foam including a structure 110 and pores 120 formed by foaming a polyol mixture containing an antibacterial agent.

In detail, the cosmetic carrier supports the cosmetic, and the density of the cosmetic carrier 210 is preferably 20 kg/m ³ to 50 kg/m ³ . For example, if the density is less than 20 kg/m ³ , the shape may not be maintained well when cosmetics are loaded, and if it exceeds 50 kg/m ³ , the hardness may be too high, resulting in difficulty eluting the carrier liquid.

In addition, it is desirable for the hardness to be between 10kgf/cm ² and 50kgf/cm ² . If the hardness is less than 10kgf/cm ² , the product cannot maintain its shape due to natural leaching of the support liquid after loading, and if it exceeds 50kgf/cm ² , the product cannot maintain its shape. Due to high hardness, difficulties in dissolution may occur.

In addition, it is preferable that the rebound elasticity is 20% to 40%. If it is less than 20%, an excess amount may be eluted when the support solution is eluted, and if it exceeds 40%, a small amount may be eluted when the support solution is eluted.

In addition, the average number of pores is preferably 30ppi to 90ppi. If it is less than 30ppi, the cell may be too large and the support solution may be easily eluted. If it exceeds 90ppi, the cell may be too small and the support solution may not be easily eluted. there is

In addition, it is preferable that the elongation rate is 50% to 150%. If it is less than 50%, the foam may easily break, and if it exceeds 150%, cutting may not work well during foam processing.

Meanwhile, the cosmetic carrier 210 supports the cosmetic agent 230, and the supported cosmetic agent 230 is eluted by pressure. Accordingly, the cosmetic 230 is preferably in a liquid form in order to be supported on the cosmetic carrier 210, and there is no limitation on the composition of the cosmetic 230. For example, the cosmetic may be a sunscreen, and the sunscreen may be ethylhexyl methoxycinnamate (EHMC).

In addition, in order to support the cosmetic material 230 on the cosmetic carrier 210, it is preferable to impregnate the cosmetic carrier 210 with the cosmetic agent 230. However, there is no limitation on the method of carrying the cosmetic material 230 on the cosmetic carrier 210.

Hereinafter, the present invention will be described in detail through examples and experimental examples. However, the following examples and experimental examples are merely illustrative of the present invention, and the present invention is not limited by the following examples and experimental examples.

Examples and comparative examples.

Preparation Example 1. Preparation of the first polyol.

Propylene carbonate, a five-membered ring carbonate, was prepared by reacting propylene oxide and carbon dioxide in the presence of an ionic liquid catalyst, and polycarbonate polyol was prepared by reacting the propylene carbonate and the starter.

Example 1. Manufacturing of flexible polyurethane foam.

Flexible polyurethane foam was prepared by adding polycarbonate polyol, polyether polyol, polymer polyol, vegetable raw materials, antibacterial agent, curing agent, foaming agent, and foaming catalyst prepared through Preparation Example 1. Afterwards, in order to form a film on the foam, the foam was put into a vacuum chamber to create a vacuum, hydrogen and oxygen gas were added, and the film was removed through spark ignition.

Comparative Example 1. Preparation of flexible polyurethane foam

Flexible polyurethane foam was manufactured in the same manner as in Example 1 except for adding the polycarbonate polyol. In detail, flexible polyurethane foam was manufactured by increasing the ratio of polyether polyol instead of polycarbonate polyol.

Table 1 below compares the physical properties of the flexible polyurethane foam of Example 1 and Comparative Example 1.

Example 1 Comparative Example 1 Properties Density (kg/m ³ ) 35.01 35.01 Hardness (kgf/314cm ² ) 31.7 33.95 Rebound elasticity (%) 32 24 Cell size (PPI) 70 70 elongation rate 112 104 breathable Before the unveiling 21.9 13.8 After the unveiling 198 -- Dissolution characteristics Dissolution amount (%) 95% 92%

Referring to Table 1, it can be seen that as polycarbonate polyol is added, the density, hardness, and cell size are similar, but the rebound elasticity, elongation, and breathability are improved. That is, it can be confirmed that the physical properties of the flexible polyurethane foam are improved as the first polyol, polycarbonate polyol, is manufactured and added.

Figure 3 is an image of flexible polyurethane foam before and after modification according to one embodiment.

Figure 3 (a) is an image before modifying the flexible polyurethane foam (before film forming), and it can be seen that a shiny transparent film exists.

Figure 3(b) is an image after modifying the soft polyurethane foam (after film forming treatment), and it can be seen that the shiny transparent film has been removed and pores are formed on the surface of the soft polyurethane foam.

Through Table 1 and Figure 3, it can be seen that as the surface of the flexible polyurethane foam is modified (film forming treatment), breathability is improved by about 10 times or more.

Experimental Example 1. Confirmation of dissolution characteristics.

In order to confirm the characteristics of the flexible polyurethane foam prepared through Example 1 and Comparative Example 1, the soft polyurethane foam was soaked in ethylhexyl methoxycinnamate (EHMC), a sunscreen, and the supported soft poly The amount of EHMC eluted from the urethane foam was confirmed, and the results are shown in Table 1 above.

Referring to Table 1, the elution amount of the flexible polyurethane foam of Example 1 is 95%, and the elution amount of the flexible polyurethane foam of Comparative Example 1 is 93%, which confirms that the elution amount of the flexible polyurethane foam of Example 1 is large. there is . It is believed that the amount of EHMC eluted is greater due to the physical properties of the flexible polyurethane foam.

In this specification, only a few examples are described among the various embodiments performed by the present inventors, but the technical idea of the present invention is not limited or limited thereto, and of course, it can be modified and implemented in various ways by those skilled in the art.

100: Soft polyurethane foam
110: structure
120: Qigong

Claims (25)

0.3 wt% to 35 wt% of a first polyol, which is a polycarbonate polyol with a number average molecular weight of 1,000 g/mol to 5,000 g/mol represented by the following formula (1),
15 wt% to 55 wt% of a second polyol, which is a polyether-based polyol with a number average molecular weight of 2,000 g/mol to 6,000 g/mol,
30 wt% to 60 wt% of a third polyol, which is a polymer polyol with a number average molecular weight of 3,000 g/mol to 6,000 g/mol,
Vegetable raw materials and antibacterial agents
It consists of a structure formed by foaming a polyol mixture containing,
The structure is characterized by an open cell structure with pores distributed within it,
The first polyol is a flexible polyurethane foam for a cosmetic carrier obtained by reacting epoxide with carbon dioxide in the presence of an ionic liquid catalyst to produce a 5-membered ring carbonate, and reacting the 5-membered ring carbonate with a starter according to Scheme 1 below. .
[Formula 1]

In Formula 1, m and n are positive integers representing repeating units of the epoxide and the 5-membered ring carbonate, respectively.
[Scheme 1]

In Scheme 1, R represents a straight-chain or branched C1-C10 alkyl group. delete According to paragraph 1,
The starter is a flexible polyurethane foam for a cosmetic carrier, which is a compound containing two or more primary amines or secondary amines. According to paragraph 1,
The first polyol is a flexible polyurethane foam for a cosmetic carrier in which the number average molecular weight is controlled by polymerizing epoxide. According to paragraph 1,
A soft polyurethane foam for a cosmetic carrier, wherein the density of the soft polyurethane foam is 20 kg/m3 to 50 kg/m3. According to paragraph 1,
A soft polyurethane foam for a cosmetic carrier, wherein the hardness of the soft polyurethane foam is 10kgf/cm2 to 50kgf/cm2. According to paragraph 1,
The soft polyurethane foam for a cosmetic carrier has a rebound elasticity of 20% to 40%. According to paragraph 1,
Soft polyurethane foam for a cosmetic carrier, wherein the average pore number of the soft polyurethane foam is 30 ppi to 90 ppi. According to paragraph 1,
Soft polyurethane foam for a cosmetic carrier, wherein the soft polyurethane foam has an elongation of 50% to 150%. Preparing a first polyol, which is a polycarbonate polyol with a number average molecular weight of 1,000 g/mol to 5,000 g/mol, represented by the following formula (1);
0.3 wt% to 35 wt% of the first polyol, 15 wt% to 55 wt% of the second polyol, which is a polyether-based polyol with a number average molecular weight of 2,000 g/mol to 6,000 g/mol, and a number average molecular weight of 3,000 g/mol to 6,000 g/mol. Forming a polyol mixture by mixing 30 wt% to 60 wt% of a third polyol, which is a polymer polyol, with vegetable raw materials and an antibacterial agent;
Adding a curing agent to the polyol mixture to form a foam;
Step of reforming the foam
Including,
The step of preparing the first polyol involves reacting epoxide with carbon dioxide in the presence of an ionic liquid catalyst to produce a 5-membered ring carbonate, and reacting the 5-membered ring carbonate with a starter to produce a polycarbonate polyol according to Scheme 1 below. steps,
Polymerizing the polycarbonate polyol and epoxide
A method for producing a flexible polyurethane foam for a cosmetic carrier comprising a.
[Formula 1]

In Formula 1, m and n are positive integers representing repeating units of the epoxide and the 5-membered ring carbonate, respectively.
[Scheme 1]

In Scheme 1, R represents a straight-chain or branched C1-C10 alkyl group. delete delete delete delete According to clause 10,
A method of producing a flexible polyurethane foam for a cosmetic carrier, wherein the vegetable raw material includes at least one selected from the group consisting of polyol derived from soy bean oil and polyol derived from castor oil. According to clause 15,
A method of producing a flexible polyurethane foam for a cosmetic carrier, wherein the vegetable raw material is 0.1 wt% to 50 wt% based on the polyol mixture. According to clause 10,
A method of producing a flexible polyurethane foam for a cosmetic carrier, wherein the antibacterial agent is at least one selected from the zinc series, silver series, and copper series. According to clause 17,
A method of producing a flexible polyurethane foam for a cosmetic carrier, wherein the antibacterial agent is 0.1 wt% to 10 wt% based on the polyol mixture. According to clause 10,
A method of producing a flexible polyurethane foam for a cosmetic carrier, wherein the step of forming the foam further includes a foam catalyst. According to clause 10,
The modifying step is a method of producing a flexible polyurethane foam for a cosmetic carrier, wherein the foam is reticulated. According to clause 20,
The film forming treatment is a method of manufacturing a flexible polyurethane foam for a cosmetic carrier, wherein the closed cell foam is modified into an open cell foam. The method of claim 21, wherein the film forming process includes:
Injecting foam into a vacuum chamber;
forming a vacuum inside the vacuum chamber;
Injecting hydrogen gas and oxygen gas into the vacuum chamber where the vacuum is formed;
Removing the membrane through spark ignition
A method for producing a flexible polyurethane foam for a cosmetic carrier comprising a. delete delete delete