KR20230034914A - Screening method of solvent for extracting polyvinyl chloride, composition, recycled polyvinyl chloride and method for recycling waste - Google Patents

Abstract

The present specification relates to a screening method for a solvent for polyvinyl chloride extraction, a composition, and a method for recycling recycled polyvinyl chloride and wastes. One embodiment of the present specification provides the screening method for the solvent for the polyvinyl chloride extraction, which comprises the following steps of: selecting two or more good solvents for extracting polyvinyl chloride from the wastes containing the polyvinyl chloride from among solvents having a PVC solubility score value of 11 or more according to the following formula 1; and selecting at least one of the solvents having a PVC solubility score value of less than 11 according to the following formula 1 as a non-solvent for extracting the polyvinyl chloride from the wastes containing the polyvinyl chloride.

Description

Screening method of solvent for polyvinyl chloride extraction, composition, recycling method of recycled polyvinyl chloride and waste

This specification claims the benefit of the filing date of Korean Patent Application No. 10-2021-0117874 filed with the Korean Intellectual Property Office on September 03, 2021, all of which are incorporated herein.

The present specification relates to a method for screening a solvent for polyvinyl chloride extraction, a composition, and a method for recycling recycled polyvinyl chloride and waste.

Plastics can be molded into various shapes by heat or pressure, and as the quality of materials is gradually improving, plastics are used to replace objects in everyday life, or new products using them are being developed.

Since these plastics are convenient and easy to use, demand for products made of plastics such as plastic bags, PET bottles, disposable products, packaging products, and electronic products is gradually increasing worldwide.

Plastic used and discarded in this way is incinerated or landfilled. In the case of incineration, a lot of pollutants harmful to the human body are discharged, so the discarded plastic is landfilled rather than incinerated.

However, most plastics take a long time to decompose naturally after disposal, and since the amount of plastic that is landfilled is considerable, interest in plastic recycling is increasing.

Among plastics, polyvinyl chloride (PVC) is widely used in construction materials (pipes, window frames, etc.), wire coatings, synthetic leather, rubber basins, hoses, flooring materials, packaging materials, medical infusion bags, toys, and the like. Various methods for recycling PVC from wastes containing PVC and materials that can minimize damage to humans and the environment during the recycling process must be sought.

The present specification provides a method for screening a solvent for extracting polyvinyl chloride, a composition, and a method for recycling recycled polyvinyl chloride and waste.

In one embodiment of the present specification, selecting a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride as two or more solvents having a PVC solubility score value of 11 or more according to Equation 1 below; and selecting at least one of solvents having a PVC solubility score value of less than 11 according to Equation 1 below as a non-solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride. provides a way

[Equation 1]

In Equation 1 above,

x _k is a real number from -20 to 20, k is an integer from 1 to 9,

는 용매의 화학퍼텐셜이고,

에서, i는 용질이며, j는 용매이고,

is the chemical potential of the solvent,

In, i is the solute, j is the solvent,

r _i is the Hansen dissolution parameter distance of the solvent,

V _sol is the molecular volume of the solvent,

Sol is the solvent, PVC is polyvinyl chloride, and dop is diethylhexyl phthalate.

Another embodiment of the present specification is polyvinyl chloride extracted from waste containing polyvinyl chloride; Two or more good solvents among solvents having a PVC solubility score value of 11 or more according to Formula 1 below; and at least one non-solvent among solvents having a PVC solubility score value of less than 11 according to Equation 1 below.

[Equation 1]

In Equation 1 above,

x _k is a real number from -20 to 20, k is an integer from 1 to 9,

는 용매의 화학퍼텐셜이고,

에서, i는 용질이며, j는 용매이고,

is the chemical potential of the solvent,

In, i is the solute, j is the solvent,

r _i is the Hansen dissolution parameter distance of the solvent,

V _sol is the molecular volume of the solvent,

Sol is the solvent, PVC is polyvinyl chloride, and dop is diethylhexyl phthalate.

Another embodiment of the present specification provides recycled polyvinyl chloride obtained by filtering the above-described composition.

Another embodiment of the present specification includes the steps of selecting a good solvent and non-solvent for polyvinyl chloride extraction using the above-described solvent screening method; contacting the waste containing the polyvinyl chloride with the good solvent and dissolving the polyvinyl chloride in the waste with the good solvent to obtain a polyvinyl chloride solution; And by contacting the dissolving solution with the non-solvent, it provides a method of recycling waste containing polyvinyl chloride comprising the step of precipitating polyvinyl chloride from the dissolving solution.

According to one embodiment of the present specification, various good solvent-non-solvent combinations suitable for the process of extracting polyvinyl chloride from waste containing polyvinyl chloride can be found.

Hereinafter, this specification will be described in detail.

The present specification intends to provide an appropriate combination of a good solvent and a non-solvent selected using parameters capable of predicting, classifying, and evaluating usable solvents for extracting polyvinyl chloride (PVC) from waste. Through this, it is possible to discover a new combination of a good solvent and a non-solvent capable of extracting PVC. Here, the solvent capable of extracting PVC refers to all solvents used to extract PVC from waste, specifically, a good solvent capable of dissolving PVC from waste due to its high solubility in PVC, as well as a solvent in which PVC is dissolved. A non-solvent capable of obtaining PVC by precipitating PVC from a good solvent is also included. In addition, in the present specification, two or more solvents may be mixed and used in one role. For example, two or more solvents may be mixed as a good solvent, and a single solvent may be used as a non-solvent or a mixture of two or more solvents may be used. When a mixed solvent is used, the mixing ratio of each solvent in the mixed solvent, that is, the weight fraction (Weight Fraction) is substituted into Equation 1 to be described later to calculate the PVC solubility score value.

In one embodiment of the present specification, selecting a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride as two or more solvents having a PVC solubility score value of 11 or more according to Equation 1 below; and selecting at least one of solvents having a PVC solubility score value of less than 11 according to Equation 1 below as a non-solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride. provides a way

[Equation 1]

In Equation 1 above,

x _k is a real number from -20 to 20, k is an integer from 1 to 9,

는 용매의 화학퍼텐셜이고,

에서, i는 용질이며, j는 용매이고,

is the chemical potential of the solvent,

In, i is the solute, j is the solvent,

r _i is the Hansen dissolution parameter distance of the solvent,

V _sol is the molecular volume of the solvent,

Sol is the solvent, PVC is polyvinyl chloride, and dop is diethylhexyl phthalate.

In one embodiment of the present specification, the affinity between PVC and the solvent is calculated using data such as the chemical potential of the solvent, the Hansen dissolution parameter distance r _i of the solvent, and the solvent molecular volume V _sol Lo, and based on the calculated result, PVC and A good solvent that mixes well, that is, a solvent that can separate PVC from waste, and a non-solvent that does not mix well with PVC, that is, a solvent that can precipitate PVC from a solvent in which PVC is dissolved, can be classified.

In one embodiment of the present specification, Equation 1 means a solubility score considering factors that can determine solubility between PVC containing a plasticizer and a solvent together with variables of experimental conditions such as temperature. Since Equation 1 tends to have a higher value as the solubility in PVC increases, the higher the value, the more suitable it is for use as a solvent for dissolving PVC, and the lower it is, the more suitable it is for use as a non-solvent.

In one embodiment of the present specification, through the value of Equation 1, the reference value for distinguishing the good solvent and the non-solvent is 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, A good solvent and a non-solvent can be distinguished based on 14, 14.5, 15 or 15.5. Specifically, it can be determined as a good solvent if it is more than the reference value, and it can be determined as a non-solvent if it is less than the reference value.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 8 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one of solvents having a PVC solubility score value of less than 8 according to Formula 1 may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 8.5 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one of solvents having a PVC solubility score value of less than 8.5 or less than 8 according to Formula 1 may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 9 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one of solvents having a PVC solubility score value of 9, 8.5 or less, or 8 or less according to Formula 1 may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 9.5 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one of solvents having a PVC solubility score value of 9.5, 9, 8.5, or 8 according to Formula 1 may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 10 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one of solvents having a PVC solubility score of Equation 1 of less than 10, 9.5 or less, 9 or less, 8.5 or less, or 8 or less may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 10.5 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one solvent having a PVC solubility score of Equation 1 of less than 10.5, less than 10, less than 9.5, less than 9, less than 8.5, or less than 8 may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 11 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one of solvents having a PVC solubility score of 11, 10.5 or less, 10 or less, 9.5 or less, 9 or less, 8.5 or less, or 8 or less according to Formula 1 may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 11.5 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one solvent having a PVC solubility score of Equation 1 of less than 11.5, 11 or less, 10.5 or less, 10 or less, 9.5 or less, 9 or less, 8.5 or less, or 8 or less may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 12 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one solvent having a PVC solubility score of Equation 1 of less than 12, less than 11.5, less than 11, less than 10.5, less than 10, less than 9.5, less than 9, less than 8.5, or less than 8 may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 12.5 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one solvent having a PVC solubility score according to Formula 1 of less than 12.5, 12 or less, 11.5 or less, 11 or less, 10.5 or less, 10 or less, 9.5 or less, 9 or less, 8.5 or less, or 8 or less may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 13 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one solvent having a PVC solubility score value of 13 or less, 12.5 or less, 12 or less, 11.5 or less, 11 or less, 10.5 or less, 10 or less, 9.5 or less, 9 or less, 8.5 or less, or 8 or less according to Formula 1 may be selected.

An exemplary embodiment of the present specification selects two or more of the solvents having a PVC solubility score value of 11 or more according to Equation 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride, and as a non-solvent, the At least one of solvents having a PVC solubility score value of less than 11 according to Formula 1 may be selected.

는 상온에서 용매의 화학퍼텐셜이며, 용질 한 개의 분자가 용매에 묽게 용해되어 있을 때 화학퍼텐셜이다. 화학퍼텐셜은　μ로 표시하고, i는 용질이며, j는 용매를 의미하고, 이때, sol은 용매이며, pvc는 폴리염화비닐이고, dop는 다이에틸헥실 프탈레이트이다. 구체적으로,

은 상온에서 PVC 1 분자가 무한한 개수의 용매에 포함될 때의 화학퍼텐셜을 의미하며, PVC가 용매와 얼마나 친화도를 가지는 지 나타내는 값이다.

은 상온에서 가소제 1 분자가 무한한 개수의 용매에 포함될 때의 화학퍼텐셜을 의미하고, 가소제와 용매간 친화도를 나타내는 값이다.

의 값은 작을수록 친화도가 높음을 나타낸다. 이때, 상온은 가열하거나 냉각하지 않은 자연 그대로의 기온을 의미하며, 예를 들면 20±5℃이다.In Equation 1 of an exemplary embodiment of the present specification,

is the chemical potential of the solvent at room temperature, and is the chemical potential when one molecule of solute is diluted in the solvent. The chemical potential is represented by μ, i is the solute, j is the solvent, where sol is the solvent, pvc is polyvinyl chloride, and dop is diethylhexyl phthalate. Specifically,

Means the chemical potential when one molecule of PVC is included in an infinite number of solvents at room temperature, and is a value indicating how much affinity PVC has with the solvent.

Means the chemical potential when one molecule of the plasticizer is included in an infinite number of solvents at room temperature, and is a value representing the affinity between the plasticizer and the solvent.

The smaller the value of is, the higher the affinity. At this time, room temperature means a natural temperature that is not heated or cooled, and is, for example, 20 ± 5 ° C.

In one embodiment of the present specification, diethylhexyl phthalate is the most common plasticizer used in waste polyvinyl chloride, and even if other plasticizers are used, it has chemically similar properties, so diethylhexyl phthalate, which is representative, is selected did

In addition, about 20% by weight to 50% by weight of a plasticizer based on the total weight of the final product is added during the production of polyvinyl chloride. In order to extract PVC from waste, it is desirable to consider the characteristics of the plasticizer added in a non-negligible amount. When extracting PVC from waste, if the plasticizer and solubility are high, more PVC can be extracted. Equation 1 includes factors related to the interaction of the plasticizer and the solvent.

In Equation 1 of an exemplary embodiment of the present specification, the chemical potential can be calculated using COSMO-RS (Conductor like Screening Model for Real Solvents) theory, and COSMO-RS is based on unimolecular quantum chemical calculation. The molecular structure information predicts thermodynamic data, which is the characteristic of each solvent. It can be calculated using COSMOtherm software ( COSMOlogic GmbH & Co. KG ), which makes it easy to calculate.

In Equation 1 of an exemplary embodiment of the present specification, r _i is the Hansen dissolution parameter distance between the solvent and material i, and is calculated through Equation 2 below. _rpvc is the Hansen dissolution parameter distance between the solvent and PVC, indicating how similar the PVC and solvent are. r _dop is the Hansen dissolution parameter distance between the solvent and the plasticizer, indicating how similar the plasticizer and solvent are. The more similar the properties are, the higher the compatibility is, and the smaller r _i is, the more similar they are.

[Equation 2]

=(4×(dD_i-dD_sol)²+(dP_i-dP_sol)²+(dH_i-dH_sol)²)^1/2

=(4×(dD _i -dD _sol ) ² +(dP _i -dP _sol ) ² +(dH _i -dH _sol ) ² ) ^1/2

In Equation 2, dD _i -dD _sol is the difference in diffusion energy between the molecules of substance i and the solvent,

dP _i -dP _sol is the difference in dipole interaction energy between molecules of substance i and solvent,

dH _i -dH _sol is the difference in hydrogen bond energy between the molecules of substance i and the solvent.

In Equation 1 of an exemplary embodiment of the present specification, the Hansen dissolution parameter can be calculated by Y-MB (Yamamoto Molecule Breaking), and can be calculated using HSPip software that conveniently calculates it. Specifically, HSPip software is used to separate molecules into sub-groups, and the Hansen lysis is performed using a Neural Network method that considers the number of sub-groups and inter-group interactions. Calculate the Hansen solubility parameter.

In Equation 1 of an exemplary embodiment of the present specification, V _sol is the molecular volume of the solvent, and the smaller the volume of the solvent molecule, the higher the probability of dissolving PVC by penetrating into the space between the polymers. Therefore, related factors are included.

In Equation 1 of an exemplary embodiment of the present specification, the molecular volume of the solvent can be calculated by quantitative-structure-property-relationship (QSPR), and can be calculated using COSMOtherm software ( COSMOlogic GmbH & Co. KG ) that conveniently calculates it. can

In one embodiment of the present specification, each x _k is a real number of -20 to 20, and k is an integer of 1 to 9. Specifically, x ₁ to x ₉ are real numbers of -20 to 20, respectively.

In one embodiment of the present specification, x ₁ is a control variable representing the degree of influence of chemical potential obtained using COSMOtherm in a method for predicting the solubility of PVC and plasticizer in a solvent. x ₁ is a real number of -20 to 20, specifically a real number of -10 to 10, more specifically a real number of 0 to 5, preferably 1.

In one embodiment of the present specification, x ₂ is an adjustment variable for considering the degree of influence of the chemical potential of PVC on the solvent. At this time, x ₂ adjusts the corresponding variable according to the plasticizer content contained in PVC and process conditions (temperature, pressure, time, etc.). x ₂ is a real number of -20 to 20, specifically a real number of -10 to 10, more specifically a real number of -5 to 5, and preferably may be 0.05.

In one embodiment of the present specification, x ₃ is an adjustment variable for considering the degree of influence of the chemical potential of the plasticizer on the solvent. At this time, x ₃ adjusts the corresponding variable according to the plasticizer content contained in PVC and process conditions (temperature, pressure, time, etc.). x ₃ is a real number of -20 to 20, specifically a real number of -10 to 10, more specifically a real number of -5 to 5, and preferably may be 0.04.

In one embodiment of the present specification, x ₄ is a control variable representing the degree of influence of the Hansen dissolution parameter distance in the method for predicting the solubility of PVC and plasticizer in a solvent. x ₄ is a real number of -20 to 20, specifically a real number of 0 to 20, more specifically a real number of 5 to 15, preferably 10.

In one embodiment of the present specification, x ₅ is an adjustment variable for considering the degree of influence of the Hansen dissolution parameter distance of PVC on the solvent. At this time, x ₅ adjusts the corresponding variable according to the plasticizer content in PVC and process conditions (temperature, pressure, time, etc.). x ₅ is a real number of -20 to 20, specifically a real number of -10 to 10, more specifically a real number of -5 to 5, and preferably may be 0.03.

In one embodiment of the present specification, x ₆ is an adjustment variable for considering the degree of influence of the Hansen dissolution parameter distance of the plasticizer on the solvent. At this time, x ₆ adjusts the corresponding variable according to the plasticizer content contained in PVC and process conditions (temperature, pressure, time, etc.). x ₆ is a real number of -20 to 20, specifically a real number of -10 to 10, more specifically a real number of -5 to 5, and preferably may be 0.003.

In one embodiment of the present specification, x ₇ is a control variable for considering the influence of the solvent molecule volume. As the process temperature increases, the effect on the molecular volume decreases, so x ₇ can be small, and the effect can be adjusted according to the PVC composition and molecular weight. x ₇ is a real number of -20 to 20, specifically a real number of -10 to 10, more specifically a real number of -5 to 5, and preferably may be 0.001.

In one embodiment of the present specification, x ₈ is an adjustment variable for considering the influence of the solvent molecule volume. At this time, x ₈ can adjust the effect of PVC composition and molecular weight. x ₈ is a real number of -20 to 20, specifically a real number of -10 to 10, more specifically a real number of -5 to 5, and preferably may be 0.0001.

In one embodiment of the present specification, x ₉ is a control variable for adjusting the standard of the PVC solubility score value. x ₉ is a real number of -20 to 20, specifically a real number of -10 to 10, more specifically a real number of -5 to 5, preferably 0.

In one embodiment of the present specification, the parameters are adjusted according to the plasticizer content and process conditions (temperature, pressure, time, etc.) included in the discarded PVC. For example, if the plasticizer content is small, x ₂ and x ₅ become larger and x ₃ and x ₆ become smaller. In addition, when the process temperature increases, the effect on the molecular volume decreases, so x ₇ becomes smaller, and when the temperature rises, x ₁ and x ₄ increase to correct the chemical potential and HSP distance calculated on the basis of room temperature.

In one embodiment of the present specification, a solvent having a polyvinyl chloride solubility score value of 13 or more according to Formula 1 can be determined as a good solvent for polyvinyl chloride. At this time, the good solvent means a solvent capable of dissolving polyvinyl chloride, and is a solvent capable of dissolving and extracting polyvinyl chloride from waste.

In an exemplary embodiment of the present specification, x ₁ is 1, x ₂ is 0.005, x ₃ is 0.04, x ₄ is 10, x ₅ is 0.03, x ₆ is 0.003, x ₇ is 0.001, x When ₈ is 0.0001 and x ₉ is 0, a solvent having a PVC solubility score of 13 or more according to Equation 1 can be determined as a good solvent for polyvinyl chloride.

In one embodiment of the present specification, a solvent having a polyvinyl chloride solubility score value of 9 or less according to Formula 1 may be determined as a non-solvent for polyvinyl chloride. At this time, the non-solvent means a solvent having low solubility for polyvinyl chloride, and is a solvent that can be used when precipitating polyvinyl chloride from the extracted polyvinyl chloride solution.

In one embodiment of the present specification, x ₁ is 1, x ₂ is 0.005, x ₃ is 0.04, x ₄ is 10, x ₅ is 0.03, x ₆ is 0.003, x ₇ is 0.001, When x ₈ is 0.0001 and x ₉ is 0, the solvent having a PVC solubility score value of less than 13 according to Equation 1 can be determined as a non-solvent for polyvinyl chloride.

In one embodiment of the present specification, the difference between the PVC solubility score of the good solvent and the PVC solubility score of the non-solvent is 0.1 or more, 0.2 or more, 0.3 or more, 0.4 or more, 0.5 or more, 0.6 or more, 0.7 or more, 0.8 or more. , 0.9 or more, 1 or more, 1.1 or more, 1.2 or more, 1.3 or more, 1.4 or more, 1.5 or more, 1.6 or more, 1.7 or more, 1.8 or more, 1.9 or more, 2 or more, 2.1 or more, 2.2 or more, 2.3 or more, 2.4 or more, 2.5 2.6 or higher, 2.7 or higher, 2.8 or higher, 2.9 or higher, 3 or higher, 3.1 or higher, 3.2 or higher, 3.3 or higher, 3.4 or higher, 3.5 or higher, 3.6 or higher, 3.7 or higher, 3.8 or higher, 3.9 or higher, 4 or higher, 4.1 or higher, 4.2+, 4.3+, 4.4+, 4.5+, 4.6+, 4.7+, 4.8+, 4.9+, 5+, 5.1+, 5.2+, 5.3+, 5.4+, 5.5+, 5.6+, 5.7+, 5.8+ , 5.9+, 6+, 6.1+, 6.2+, 6.3+, 6.4+, 6.5+, 6.6+, 6.7+, 6.8+, 6.9+, 7+, 7.1+, 7.2+, 7.3+, 7.4+, 7.5 7.6 or higher, 7.7 or higher, 7.8 or higher, 7.9 or higher, 8 or higher, 8.1 or higher, 8.2 or higher, 8.3 or higher, 8.4 or higher, 8.5 or higher, 8.6 or higher, 8.7 or higher, 8.8 or higher, 8.9 or higher, 9 or higher, 9.1 or higher, 9.2 or higher, 9.3 or higher, 9.4 or higher, 9.5 or higher, 9.6 or higher, 9.7 or higher, 9.8 or higher, 9.9 or higher, or 10 or higher.

In one embodiment of the present specification, the boiling point of the good solvent is 70 ℃ or more, 71 ℃ or more, 72 ℃ or more, 73 ℃ or more, 74 ℃ or more, 75 ℃ or more, 76 ℃ or more, 77 ℃ or more, 78 ℃ or more, 79 °C or more, 80 °C or more, 81 °C or more, 82 °C or more, 83 °C or more, 84 °C or more, 85 °C or more, 86 °C or more, 87 °C or more, 88 °C or more, 89 °C or more, 90 °C or more, 95 °C or more Or it may be 100 ℃ or more. In this case, when heating is required in the process, it has a boiling point higher than the heating temperature, which is advantageous because there is no loss of the good solvent by heating, and the volatility is controlled to some extent, so it is easy to handle. At this time, the upper limit of the boiling point of the good solvent is not particularly limited, but if the boiling point is too high, the energy required for drying may increase in the process of drying after the PVC extraction is completed, so the good solvent can be selected in consideration of the process cost. For example, the boiling point of the good solvent may be 400°C or less, 350°C or less, or 300°C or less.

Another embodiment of the present specification is polyvinyl chloride extracted from waste containing polyvinyl chloride; Two or more good solvents among solvents having a PVC solubility score value of 11 or more according to Formula 1 below; and at least one non-solvent among solvents having a PVC solubility score value of less than 11 according to Equation 1 below.

[Equation 1]

In Equation 1 above,

x _k is a real number from -20 to 20, k is an integer from 1 to 9,

는 용매의 화학퍼텐셜이고,

에서, i는 용질이며, j는 용매이고,

is the chemical potential of the solvent,

In, i is the solute, j is the solvent,

r _i is the Hansen dissolution parameter distance of the solvent,

V _sol is the molecular volume of the solvent,

Sol is the solvent, PVC is polyvinyl chloride, and dop is diethylhexyl phthalate.

Here, the description of Equation 1 refers to the above description to avoid duplication.

In one embodiment of the present specification, the waste polyvinyl chloride recycling composition is polyvinyl chloride extracted from waste containing polyvinyl chloride by the good solvent, the good solvent used in polyvinyl chloride extraction, and the extracted polyvinyl chloride. It means a state in which all non-solvents that separate and precipitate from the good solvent are included. Depending on the ratio of the good solvent and the non-solvent, the polyvinyl chloride extracted may coexist with the polyvinyl chloride dissolved in the good solvent and the precipitated polyvinyl chloride, or most of the polyvinyl chloride may be precipitated and settled in a solid state.

In one embodiment of the present specification, in the waste polyvinyl chloride recycling composition, when the weight of the good solvent is 100, the content of the non-solvent is at least 100 parts by weight or more, equal to or greater than the weight of the good solvent, so that the solute can precipitate. The higher the content of the non-solvent, the easier the precipitation of the solute and the shorter the process time. However, in order to increase the purity of the solute, it is preferable to adjust the content of the non-solvent in consideration of an appropriate precipitation rate and particle size of the precipitated solute.

In one embodiment of the present specification, when the weight of the good solvent is 100, the content of the non-solvent is 100 parts by weight or more, 150 parts by weight or more, 200 parts by weight or more, 250 parts by weight or more, 300 parts by weight or more, 350 It may be 400 parts by weight or more, 450 parts by weight or more, or 500 parts by weight or more, and may be 1000 parts by weight or less, 900 parts by weight or less, 800 parts by weight or less, 700 parts by weight or less, or 600 parts by weight or less.

In one embodiment of the present specification, the content of the good solvent is not particularly limited as long as ABS in the waste can be dissolved. When the weight of the waste containing waste polyvinyl chloride is 100, the content of the good solvent is at least 100 parts by weight or more, and the solute can be precipitated by adding the same or more than the weight of the waste.

In one embodiment of the present specification, when the weight of waste containing waste polyvinyl chloride is 100, the content of the good solvent is 100 parts by weight or more, 150 parts by weight or more, 200 parts by weight or more, 250 parts by weight or more, 300 parts by weight or more, 350 parts by weight or more, 400 parts by weight or more, 450 parts by weight or more, or 500 parts by weight or more, and 1000 parts by weight or less, 900 parts by weight or less, 800 parts by weight or less, 700 parts by weight or less, or 600 parts by weight may be below.

In one embodiment of the present specification, the good solvent and the non-solvent are each independently any one of an alcohol solvent, a ketone solvent, an ester solvent, an ether solvent, a polar aprotic solvent, a hydrocarbon solvent, and a halogen-containing solvent.

In one embodiment of the present specification, the good solvent is any one of an alcohol-based solvent, a ketone-based solvent, an ester-based solvent, an ether-based solvent, a polar aprotic solvent, a hydrocarbon solvent, and a halogen-containing solvent.

In one embodiment of the present specification, the good solvent is a main solvent of 50% by weight or more in the good solvent; And it may include a co-solvent that is different from the main solvent and less than 50% by weight in the good solvent. Preferably, the weight ratio of the main solvent of the good solvent and the auxiliary solvent of the good solvent may be 50:50 to 99:1.

In one embodiment of the present specification, the main solvent of the good solvent basically means a solvent with a ratio of 50% or more of the total good solvent, and when dissolving the polymer, a solvent in which interaction with the polymer is considered more, and well swelling of the polymer There is an advantage in that all of the solvents of the nature of swelling can be included through mixing of two or more types of solvents.

In one embodiment of the present specification, the good solvent in which the main solvent and the auxiliary solvent are mixed has a PVC solubility score value of 11 or more according to Equation 1 in consideration of the mixing ratio of each solvent in the mixed solvent, that is, the weight fraction. , and is selected in consideration of the difference in solubility for the non-solvent and polyvinyl chloride used together.

In an exemplary embodiment of the present specification, the main solvent of the good solvent is n, n-dimethylacetamide, cyclopentanone, 2-pentanone, dioxane, nitrobenzene, ethylacetate, benzene, trichloroethylene, 1,2-dichloroethane, chloroform, cyclohexanone, tetrahydrofuran, 2 -Can be selected from among butanone, acetone and 4-methylpentan-2-one.

In one embodiment of the present specification, the co-solvent of the good solvent is n, n-dimethylacetamide, cyclopentanone, 2-pentanone, dioxane, nitrobenzene, ethylacetate, benzene, trichloroethylene, 1,2-dichloroethane, chloroform, cyclohexanone, tetrahydrofuran, 2 -butanone, acetone, 4-methylpentan-2-one, 1,2,3-propanetrioltrinitrate, tetramethylenesulfoxide, 1-piperidinecarboxaldehyde, 1-acetylpiperidine, n-methyl-2-pyrrolidinone, 1,4-dimethylpyrrolidone, 1,3-dimethyl -2-imidazolidinone, 1,5-dimethylpyrrolidone, hexamethylphosphoramide, dimethylpropyleneurea, 1-ethyl-2-pyrrolidone, 1,3-dimethylpyrrolidone, 4-acetylmorpholine, 1-[ethoxy(methyl)phosphoryl]methylpiperidine, n,n-dimethylpropanamide, tributylphosphineoxide, 1-propyl-2-pyrrolidinone, n-isopropylpyrrolidone, n,n,4-trimethylbenzamide, n-methyl-o-acetotoluidide, 2-cyclohexen-1-one, n,n,3-trimethylbenzamide, n,n- dimethylbenzamide, trimethylenesulfide, n,n,2-trimethylbenzamide, 1,3-dioxane, tetramethylurea, 2-azacyclooctanone, 4-methyl-1-propyl-2-pyrrolidinone, 5-methyl-1-propyl-2 -pyrrolidinone, n,n-diethylacetamide, 1,3-propanedithiol, 4,5-dihydro-2-methylthiazole, pyrrolidine, 3-methoxy-n,n-dimethylpropanamide, 4-fluoro-n,n-dimethylbenzamide, cycloheptanone, 1 -morpholinopentan-1-one, 3-methylcyclohexanone, n,n-dimethylbutanamide, caprolactam, tetrahydrothiophene, 2-methoxy-n,n-dimethylbenzamide, dimethylformamide, 1,2-ethanedithiol, 1,4,7,10-tetraoxacyclododecane, ethyl 1,3-dimethyl-2-oxopyrrolidine-3-carboxylate, 1-(4-methylpiperidyl)butan-1-one, 2-methylcyclohexanone, 1-(2,6-dimethylmorpholin-4-yl)butan-1-one, n,n-diethylformamide, 4-(propan-2-yl)phenyldimethylcarbamate, n,n-dimethyl-3-phenylpropanamide, n-(1-methyl-2-methoxyethyl)-n-chloroacetyl-2-ethyl-6-methylaniline , dichloroacetylchloride, n,n-diethyl-3-(2-methyl-1,3-dioxolan-2-yl)propanamide, n-acetylcaprolactam, d-camphor, n-methylformanilide, ethyl n-acetyl-n-ethyl-beta -alaninate, (2,5-dimethoxyphenyl)acetaldehyde, 4-methylcyclohexanone, 2,6-dimethyl-2,5-cyclohexadiene-1,4-dione, 4-vinylcyclohexene dioxide, nicotine, 2-methylcyclopentanone, dimethylveronal, diethyl(trichloromethyl)phosphonate, 3-methyl-6-isopropylidenecyclohexanone, 1-heptanoyl-4-methylpiperazine, n,n-diethyl-4-oxopentanamide, n-ethyl-n-phenylacetamide, dimethyldisulfide, 4,6-dimethylpyrimidine, 1,4-oxathiane, n-sec-butylpyrrolidone, 1-(4-methylpiperidin-1-yl)pentan-1-one, 1-butyl-5-methyl-2-pyrrolidinone, 3 -methyl-2-oxazolidone, n,n-dimethyl-4-(propan-2-yl)benzamide, 2,5-dimethylpyrazine, mesitenelactone, propyl 4-(dimethylamino)-4-oxobutanoate, diethyldimethylamidophosphate, isophorone, n,n -dimethyl 4-methoxybenzamide, 1,2,3,5-tetramethoxybenzene, 3,4,5-trimethoxytoluene, caprolactone, 3-methyl-piperidin-2-one, 2-ethylhexylsalicylate, ethyl 3-ethyl-2-oxooxolane-3 -carboxylate, 1-ethyl-3,5,7-trimethyl-1,3-dihydro-azepin-2-one, dimethylisosorbide, cyclotenebutyrate, ethyl 2-(2-methoxyphenoxy)acetate, cyrene, 2,4,4-trimethyl -6-oxocyclohex-1-en-1-yl acetate, 1,2-benzodihydropyrone, tripropyleneglycolethyletherisomer , 3,4-dimethoxypropiophenone, methylaminoacetaldehydedimethylacetal, methyl 2,6-dimethoxybenzoate, 1,3-dimethyl-1,2,3,4-tetrahydro-4-quinolinone, ethyl 3,5-dimethoxybenzoate, 4-methoxybenzaldehyde, ethyl (4 -methylphenoxy)acetate, 2,3,4-trimethoxyacetophenone, ethylimidazole, methyl 2-oxocyclooctanecarboxylate, ethyl 2-methyl-4-oxocyclohex-2-enecarboxylate, 2',5'-dimethoxyacetophenone, isobutylformate, ethyl 2-(2,6 -dimethylphenoxy)acetate, ethyl 2-(benzyloxy)acetate, hexylacetoacetate, diethylglutarate, 4-carbethoxy-2-ethyl-3-methyl-2-cyclohexen-1-one, nepetalactone, tripropyleneglycolbutylether, ethyl 5,5-dimethyl-2- oxofuran-3-carboxylate, 2-ethoxybenzaldehyde, methyl-2,4-dimethoxybenzoate, 5,5-diethyl-4-methoxyfuran-2(5h)-one, ethyl 4,6-dimethyl-2-oxo-3,4- dihydro-2h-pyran-5-carboxylate, ethyl 4-phenoxybutanoate, 2,5-dimethoxypropiophenone, ethyl 5,5-dimethyl-2-oxotetrahydrofuran-3-carboxylate, ethyl 3-(5-oxotetrahydrofuran-2-yl)propanoate, benzylsalicylate, n,n-diethyl-4-methyl-4h-pyr idine-1-carboxamide, p-tolylacetonitrile, 5-methyl-2(3h)-furanone, 1-methyl-2-(3-pyridyl)pyrrole, formicacidpentylester, ethyl 4-(dimethylamino)benzoate, n-butylacetamide, 4- methylbenzaldehyde, 3',4'-dimethoxyisobutyrophenone, benzaldehyde, 1,2,4-triethoxybenzene, isobutylphenoxyacetate, m-dimethoxybenzene, 3-oxobutanoicacid-1-methylethylester, ethyl2-(cyclohexylmethyl)-3-oxobutanoate, 5-ethyldihydro-2( 3h)-furanone, 2-isopropyl-n,2,3-trimethylbutyramide, 4-(4-methylpiperidino)pyridine, 3-oxaspiro-undecan-2-one, formicacidhexylester, methyl 2,2-dimethyl-4,6-dioxocyclohexanecarboxylate , ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate, benzenepropanenitrile, 4,4-dimethyl-5,6,7,8-tetrahydro-1H-isochromen-3-one, ethyl 2 ,6-dimethyl-4-oxocyclohex-2-enecarboxylate, n,n-dimethyloctanamide, 1-(2,5-dimethylpyrrolidin-1-yl)pentan-1-one, gamma-butyrolactone, t-butylacetoacetate, 4-(methoxymethyl )anisole, mintlactone, 2-methoxyethylacetoacetate, p-(2,2-dimethoxyethoxy)anisole, 1-(1-ethylpro pyl)-2-pyrrolizinone, 2,5-dimethoxytetrahydrofuran, 2-acetoxy-1-ethoxypropane, 1,3-dimethyl-4-ethylcarbostyril, 1-(4-methoxyphenoxy)acetone, glycerol tripropionate, 3-dimethylaminoanisole, 2,4 -dimethylbenzaldehyde, paraldehyde, glyceryl tributyrate, 2,3,4,5-tetramethoxytoluene, 1,3,3-trimethyl-2h-quinolin-4-one, 3-cyclohexene-1-carboxaldehyde, isobutylsalicylate, 2-(1-methylpropyl )phenyl methylcarbamate, (2,2-diethoxyethoxy)benzene, methyl 3-(5-oxooxolan-2-yl)propanoate, 4-acetoxy-2,5-dimethyl-3(2h)-furanone, 3-ethylchroman-2- one, ethyl 3-cyclohexyl-3-oxopropanoate, 1-propyl-2(1h)-pyridinone, 7-methyl-4,4a,5,6-tetrahydro-3H-naphthalen-2-one, 1-(3,5 -dimethylphenoxy)propan-2-one, ethyl 3-(2,5,5-trimethyl-1,3-dioxan-2-yl)propanoate, 1-tetralone, 4-methyl-3-penten-2-one, 1 -tert-butylpyrrolidin-2-one, methyl 2-(4-(tert-butyl)phenoxy)acetate, 2,6,10,10-tetramethyl-1-oxaspiro(4,5)deca-2,6-dien- 8-one, ethyl 4-ethoxybenzoate, maltyl isobutyrate, 4-methyl-1,3-dioxane, 2-acetylpyridine, 1,4-dieth oxybenzene, 1-(2,2-diethoxyethoxy)-4-methylbenzene, cyclohexyl lactone, 2-(2-butoxyethoxy)ethyl acetate, n-methylbenzamide, 3-acetyl-5-propyldihydrofuran-2(3h)-one, 2, 2-diethoxyethoxymethylbenzene, n-methyl-m-tolylcarbamate, ethylene glycol dibutyrate, 4-cyano-2-fluorobenzoyl chloride, 3,6-dimethyl-2,3,3a,4,5,7a-hexahydro-1-benzofuran-2 -one, ethyl 2-(2-oxocyclohexyl)acetate, 4-(2-acetoxyethoxy)toluene, 4-(2,5-dimethylpyrrol-1-yl)-2,6-dimethylmorpholine, 1-butylpyridin-2(1h) -one, n,n-dimethyldecanamide, valeraldehyde, 2-(3-pyridyl)piperidine, 4-methoxypropiophenone, 4-tert-butyl-n,n-dimethylbenzamide, acetylacetone, ethyl 2-methyl-2-phenoxypropanoate, ethyl 2- acetyl-5-oxohexanoate, n-sec-isopentylpyrrolidone, 4-methyl-1-tetralone, 2-butoxyethanolacetate, isobutyric anhydride, n-hexyl-2-pyrrolidinone, 3-benzyl-2,4-pentanedione, ethyl 5-oxodecanoate, methyl 2-hexyl-3-oxocyclopentanecarboxylate, 8-ethyl-1-oxaspiro[4.5]decan-2-one, n,n'-dibutylethyleneurea, methyl 3-oxododecanoate, 3-methyl -5-isopropyl-4-carbethoxy-2-cyclohexene-1-one, 6-pentyl-2h-pyran-2-one, m-methoxyacetophenone, benzisoxazole, n,n-diethylnicotinamide, ethyl 3-(2-oxocyclohexyl)propanoate , propyl 4-ethoxybenzoate, 5-butyl-5-ethyltetrahydro-2h-pyran-2-one, ethyl 2-oxo-1-propylcyclohexanecarboxylate, 2-propoxyethylacetate, dimethyl 2-methylglutarate, o-methylcorypalline, 1-pentylimidazole, n- formylmorpholine, methyl 2-butoxybenzoate, 7-butyloxepan-2-one, propanoic anhydride, acetophenone, 1-(3-methylpiperidin-1-yl)pentan-1-one, 1-butyl-2-methyl-imidazole, anisaldehyd diethyl acetal , 1-(2-methylpiperidin-1-yl)pentan-1-one, 5-butyl-5-ethyloxolan-2-one, 2,4,6-trimethylbenzaldehyde, n,n-diethylcyclohex-3-ene-1- carboxamide, butan-2-yl 4-methoxybenzoate, propylene glycol alpha methylbenzyl ether, 5-(benzyloxy)pentan-2-one, n,n-dimethyldodecanamide, n,n-diethyl-m-toluamide, (s)-dihydrobovolide, 3,4-dihydro-3-oxoedulan, butyl 2-methoxybenzoate, 7-cyclohexyloxepan-2-one, dimethyl 1,4-cyclohexanedicarboxylate, del ta-decalactone, ethyl 2,5-dimethylphenoxyisobutyrate, 4a,8-dimethyl-3,4,5,6,7,8-hexahydronaphthalen-2-one, 5-hydroxy-2-decenoic acid lactone, ethyl 2-(2 -oxooxolan-3-yl)acetate, methyloctalacton, 3-pentanone, 2,4-diacetylfuran, 2'-pentyloxyacetophenone, furfural, diethylmalonate, 1-(azepan-1-yl)butan-1-one, p-methoxyvalerophenone, n ,n-diethylbenzamide, 4,4-dimethylnaphthalen-1(4h)-one, gamma-decalactone, piperitone, ethylacetoacetate, 1-hexylimidazole, dihydromintlactone, 4-heptanone, dimethyl glutarate, 4-(benzyloxy)-4-methylpentan-2 -one, 3,3-dimethyl-1-phenoxybutan-2-one, molinate, 7-methoxy-2,2-dimethylchromene, propiophenone, ethyl 2-benzoyl-3-methylbutanoate, n,n-diethyl-2-methylcyclohexane- 1-carboxamide, 5-methyl-5-propyl-1,3-dioxan-2-one, 3-methyl-5-(2-oxopropyl)oxolan-2-one, 1-(azepan-1-yl)pentan- 1-one, 2-(2-ethoxyethoxy)-ethanolacetate, 2-methyl-1-(1-phenylethyl)imidazole, methyl 6-(diethylamino)-6-oxohexanoate, 5-undecanolide, 4-methyl-5-pentyloxolan- 2-one, 2-ethoxyethylbenzoa te, 3,4-dihydro-2(1h)-naphthalenone, 1-methoxy-3-(4-methylphenoxy)benzene, n,n-dihexylacetamide, dihydroactinidiolide, 1-pentanoylpiperidine, propan-2-yl 6-(dimethylamino) -6-oxohexanoate, 5,5-dimethyl-4-(3-oxobutyl)oxolan-2-one, 1-octylpyrrolidin-2-one, gamma-undecalactone, 4-ethoxyphenethylacetate, 2-hexanoylcyclohexan-1-one, gamma- methyldecalactone, 1-(azepan-1-yl)-3-methylbutan-1-one, methyl dihydrojasmonate, p-methoxypivalophenone, 2-acetyl-4-tert-butylcyclohexan-1-one, 4,4-dibutyl-gamma-butyrolactone , 4-ethyl-2,6-dimethoxyphenol, n,n-diethylcyclohexanecarboxamide, 5-dodecanolide, 1-hexanoylpiperidine, 1-heptyl-1h-imidazole, 2-isopropoxyethylbenzoate, butanoic anhydride, methylacetoacetate, 2,3,3-trimethylindanone, 5-hexyl-4-methyldihydrofuran-2(3h)-one, phenoxyacetone, 1-propoxy-2-propanol, ethyl di-n-propylthiolcarbamate, 1,2-dimethoxy-4-methylbenzene, tetrahydrofurfurylpropionate, 2-pyrrolidon, 2- methoxypropyl acetate, 4-dodecanolide, 2-ethoxy-4-(methoxymethyl)phenol, n-isopenty lpropionanilide, pentylpiperidine-1-carboxylate, 1-(2-ethylpiperidin-1-yl)butan-1-one, isopropyl 2-isopropoxy-benzoate, n,n-dibutylpentanamide, 2,3-dihydro-2,2-dimethyl- 7-hydroxybenzofuran, 2-heptanone, 2-[2-(2-methoxypropoxy)propoxy]-1-propanol, 1,2,3,4,5,6,7,8-octahydro-2,8,8-trimethylnaphthalene -2-carbaldehyde, cycloate, 4-methylquinoline, 5-nonanone, n,n-dipentylbutanamide, 3-dimethylamino-2-methylpropiophenone, 2-ethyl-1-pentanoylpiperidine, 4-(ethoxymethyl)-2-methoxyphenol, n,n -dibutylhexanamide, 2-ethylhexyllactate, tripropyleneglycolmonomethylether, magnolione, 1-octylimidazole, butylformate, butylate, 5-ethyl-2-(2-furyl)-4-propyl-m-dioxane, 1-methoxy-4-(2-methoxyethoxymethyl) benzene, hexylpiperidine-1-carboxylate, 4-propylcyclohexanone, 2,5,8,11,14,17-hexaoxaoctadecane, ethyl n,n-diethylsuccinamate, ethyl dipentylcarbamate, 2-butoxyethyl 4-methylbenzoate, 4'-pentylacetophenone, vernolate, 2-cyclopentyl cyclopentanone, 2-butoxyethylbenzoate, trimethoxymethane, phenoyethylpropio nate, 4'-isobutylacetophenone, 2-methylindole, n,n,2-triethylhexanamide, 2-methoxy-4-propylphenol, 3,5-bis(2-methylpropyl)cyclohexane-1,2-dione, 2,4-diethoxy -6-methylpyrimidine, ethyl-2-hydroxybenzoate, p-ethoxybenzaldehyde, glycerol triacetate, p-hexylacetophenone, n,n-diisopropyl-phenylacetamide, 3-ethylundecane-4,6-dione, 1-benzazine, methyl 5-methylsalicylate, n ,n-dipropylheptanamide, 4-methylpyridine, 4-pentylcyclohexanone, 4-pyridinecarboxaldehyde, oxolan-2-yl methylheptanoate, 2-(2-(4-methylcyclohex-3-enyl)propyl)cyclopentanone, 2-isopropoxyphenol, octanophenon, 2- benzyl-4-methyl-1,3-dioxane, ethylbenzoate, 4-methyl-2-(2-methylpropyl)oxan-4-ol, 3-(diethylamino)propiophenone, benzylacetoacetate, isoamylbenzoate, pyridine, dichloromethane and 1,1, It may be selected from 2,2-tetrachloroethane, but is not limited thereto.

In one embodiment of the present specification, the non-solvent is any one of an alcohol-based solvent, a ketone-based solvent, an ester-based solvent, an ether-based solvent, a polar aprotic solvent, a hydrocarbon solvent, and a halogen-containing solvent.

In one embodiment of the present specification, the non-solvent is a main solvent of 50% by weight or more in the non-solvent; and an auxiliary solvent that is different from the main solvent and less than 50% by weight in the non-solvent. Preferably, the weight ratio of the main solvent of the non-solvent and the auxiliary solvent of the non-solvent may be 50:50 to 99:1.

In one embodiment of the present specification, the main solvent of the non-solvent basically means a solvent with a ratio of 50% or more of the total non-solvent, and when dissolving the polymer, a solvent in which interaction with the polymer is considered more and well swelling the polymer There is an advantage in that all of the solvents of the nature of swelling can be included through mixing of two or more types of solvents.

In one embodiment of the present specification, the sole non-solvent has a PVC solubility score value of less than 11 according to Equation 1, and is selected in consideration of the solubility difference between the good solvent and polyvinyl chloride used together.

In one embodiment of the present specification, the sole non-solvent is propanol, diethylether, n-heptane, hexane, 1,4-butadiol, octane, cyclopentane, propyleneglycol, dimethylsulfoxide, methanol, ethanol, 2-propanol, 2,4-dimethylhexane, 3-ethyl-2,4-dimethylpentane, 2,7-dimethyloctane, 2,6-dimethyl-heptane, 2-methyl-3-ethylpentane, 3,3-dimethylhexane, 2,3,5-trimethylhexane, 2,3, 4-trimethylpentane, 2,2-dimethylheptane, 3,3-dimethylpentane, 1,1,1,2,2,3,3,4,4-nonafluorotetracosane, 2,5-dimethylhexane, 2,2-dimethylhexane, 2, 3,3-trimethylpentane, formicacid, 2,2,6-trimethylheptane, 2,2,4-trimethylhexane, 2,2,3-trimethylpentane, 2,3,3,4-tetramethylpentane, 2,4,4-trimethylhexane, 1-hydroxybenzotriazole, 3-ethyl-2,2-dimethyl-pentane, 2,2,4,6,6-pentamethylheptane, 2,2,5-trimethylhexane, 2-nitroethanol, 2,2,3,4-tetramethylpentane, octamethyltrisiloxane, 2,2,3,3-tetramethylhexane, 1,5-pentanediol, 1,1,1,2,2,3,3-heptafluorooundecane, 2,2,5,5-tetramethylhexane, 2,2,3, 3-tetramethylpentane, 2,2,4-trimethylpentane, 2,2,4,4-tetramethylpentane, do decamethylcyclohexasiloxane, acetaldehydeammonia, 1,1,1,2,2,3,3,4,4-nonafluorohexadecane, dodecamethylpentasiloxane, 1,1,1,2,2,3,3-heptafluorononane, 1,3-dioxolan-2- one, decamethyltetrasiloxane, 1-(perfluorohexyl)docosane, hexamethyldisilane, 1,1,1,2,2,3,3,4,4,5,5-undecafluorononadecane, tetradecamethylhexasiloxane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6-tridecafluorohexacosane, 1,1,1,2,2,3,3,4,4-nonafluorooundecane, 1,1,1,2,2,3,3 ,4,4-nonafluorododecane, hexadecamethylheptasiloxane, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorotetracosane, propynol, 1,1,1,2,2,3 ,3,4,4-nonafluorodecane, ethanolamine, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorodocosane, 2-hydroxypropanenitrile, 1,1,1,2 ,2,3,3,4,4,5,5,6,6-tridecafluoroicosane, 1,1,1,2,2,3,3,4,4-nonafluorononane, 1,1,1,2,2 ,3,3,4,4,5,5,6,6-tridecafluorooctadecane, cis-2-butene-1,4-diol, 1,1,1,2,2,3,3,4,4,5 -decafluorononane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorooctacosane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6-tridecafluorohexadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8, 8-heptadecafluorohexacosane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoropentacosane, 1,1,1,2,2, 3,3,4,4,5,5,6,6-tridecafluoropentadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8, 8-heptadecafluorotetracosane, 1-(perfluorohexyl)octane, 1,1,1,2,2,3,3,4,4,5,5-undecafluorodecane, 1,1,1,2,2,3,3,4 ,4,5,5,6,6-tridecafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorodocosane, 1h ,8h-hexadecafluorooctane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotriacontane, hexacosamethyldodecasiloxane , 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoroicosane, 1,1,1,2,2,3,3 ,4,4,5,5,6,6-tridecafluorododecane, 1,3-propanediol, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooundecane, 1 ,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorononadecane, 1,1,1,2,2,3,3,4 ,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorononacosane, 1,1,1,2,2,3,3,4,4,5,5 ,6,6,7,7,8,8-heptadecafluorooctadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-pentadecafluorotetradecane, 1,1 ,1,2,2,3,3,4,4,5,5,6-dodecafluorononane, 1,1,1,2,2,3,3,4,4,5,5- undecafluorooctane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-pentadecafluorotridecane, 1-perfluorooctyloctane, 1,1,1,2,2,3, 3,4,4,5,5,6,6-tridecafluorodecane, 1,1,1,2,2,3,3,4,4,13,13,14,14,15,15,16,16, 16-octadecafluorohexadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoropentadecane, 1,1,1,2,2, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorohentriacontane, formicin, 1,1,1, 2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorotetradecane, 1-(henicosafluorodecyl)undecane, 1,1,1,2,2,3,3 ,4,4,5,5,6,6,7,7,8,8-heptadecafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7 ,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorooctacosane, ethylenecyanohydrin, 1,1,1,2,2,3,3,4,4,5,5,6 ,6,7,7,8,8,9,9,10,10-henicosafluoroicosane, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooctane, perfluorooctylbromide , 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorooctadecane, 1,1,1 ,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorododecane, 1,1,1,2,2,3,3,4,4,5 ,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorotetracosane, pentacosafluor otricosane, 1-(perfluorohexyl)propane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10 -henicosafluoropentadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorodecane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotetradecane, 1,1,1,2,2,3,3,4,4 ,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorooctadecane, 1,1,1,2,2,3,3,4 ,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5 ,6,6,7,7,8,8,9,9,10,10-henicosafluorododecane, glycol, tetratriacontafluorotetracosane, glycerol, 1,1,1,2,2,3,3,4,4,5,5 ,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorotetradecane, methylhydroperoxide, H ₂ O, 4-hydroxymethyl-1,3-dioxolan-2-one , hydroxyacetonitrile, perfluorooctane, cis-perfluorodecalin, methanesulfonicacid, formamide, 4-methylphenol, PBr ₃ , H ₂ O ₂ , BBr ₃ , methylbutane, 2,2-dimethylbutane, 2,2,3-trimethyl-butane, 2,2- dimethylpentane, 2,3-dimethylbutane, pentane, 2,4-dimethylpentane, 2-methylpentane, 2-methylhexane, 3-methylpentane, 3-methyl-hexane, 3-ethylpentan e, 3-ethyl-3-methylpentane, 2-methylheptane, 3,3-diethylpentane, 3-methylheptane, 2-methyloctane, 4-methylheptane, 3-ethylheptane, 2-methyl-nonane, 3-methyloctane, 4-methyloctane, 2-methyldecane, 3-methyl-nonane, 1,1,3,3-tetramethylcyclopentane, 1,3-butanediol, 4-methyldecane, 5-methyl-nonane, 4-methyl-nonane, 1,1-dimethylcyclopentane, 1, 1,2-trimethylcyclopentane, 1,1,2-trimethylcyclohexane, n-decane, n-nonane, isobutylcyclopentane, (1-methylethyl)-cyclopentane, tert-butylcyclohexane, pentadecane, tridecane, 1,1,3-trimethylcyclopentane, 1, 1,3-trimethylcyclohexane, nonadecane, heptadecane, octadecane, ethylcyclopentane, dodecane, n-undecane, propylcyclopentane, isobutylcyclohexane, isopropylcyclohexane, 1-ethyl-1-methylcyclopentane, 2,3,3-trimethyl-1-butene, 2,4, 4-trimethyl-1-pentene, n-hexylcyclopentane, pentylcyclopentane, 1-isopropyl-4-methylcyclohexane, trimethylaluminum, n-tetradecylcyclopentane, tridecylcyclopentane, tetradecane, n-dodecylcyclopentane, n-decylcyclopentane, n-propy lcyclohexane, ethylcyclohexane, 3,3-dimethyl-1-butene, n-hexadecane, pentene, 2,3,3-trimethyl-1-pentene, decylcyclohexane, pentylcyclohexane, 3,4-dicyclohexyl-2,5-dimethylhexane, 2- methyl-1-butene, 3,3-dimethyl-1-pentene, 4,4-dimethyl-1-pentene, butylcyclohexane, methylcyclopentane, methylcyclohexane, decahydronaphthalene, hexahydroindene, bicyclohexyl, cyclohexane, 2,4,4-trimethyl-2- pentene, 2,3-dimethyl-1-pentene, tricyclohexylmethane, butylcyclopentane, 1-hexene, 2,3-dimethyl-1-butene, methylformamide, 3,3-dimethyl-1-butyne, triethyleneglycol, 3-methoxy-1, 2-propanediol, 2,4-dimethyl-1-pentene, 1-heptene, 3-methyl-1-pentene, 3-ethyl-2-methyl-1-pentene, 1,4-bis(1,1-dimethylethyl) -benzene, diethyleneglycol, octane, methoxyacetic acid, 1-nonene, 4-methyl-1-hexene, 1,2,3,4-tetrahydro-1,1,3,4,4,6-hexamethylnaphthalene, 1,3,5 -triisopropylbenzene, 1,2,2,6,6-pentamethylpiperidine, 1,4-diethylbenzene, 2-methyl-2-butene, isoprene, 4-methyl-1-pentene, 1-tetradecene, 3-ethyl-1-pentene , 2-methyl-3 -heptene, 1-decene, 2,3,4-trimethyl-2-pentene, 1-nonadecene, butylbenzene, 2-ethoxy-2-methyl-propane, 1,2-diethylbenzene, ethanedial, cyclohexylbenzene, galaxolide, 1,2 ,3,4-tetramethylbenzene, 1,2,3,5-tetramethylbenzene, pentaethylbenzene, 1,3,5-trimethylbenzene, isobutanol, peroxyaceticacid, 1,6-hexanediol, 2,6-di-tert-butyl-4-methylpyridine , 2,2'-(methylimino)bis-ethanol, 1,3-bis(1-methylethyl)-benzene, 2,7-diisopropylnaphthalene, 1,2,3,5-tetraethylbenzene, tetrahydro-2,2,5, 5-tetramethylfuran, 1,5-diisopropylnaphthalene, 2,3-butanediol, 1,2-diisopropylbenzene, benzene, 1-pentan-2-yl-4-pentan-3-ylbenzene, tetradecylbenzene, pentadecylbenzene, ethylbenzene, 3,6- bis-(methoxymethyl)-durene, himachalen_gamma, 1-(1,1-dimethylethyl)-3-methylbenzene, tridecylbenzene, 1-(methoxymethyl)-4-(2,4,4-trimethylpentan-2-yl)benzene, dodecylbenzene , 1,2,4-trimethylbenzene, 1-cyclohexyl-2-isopropylbenzene, dl-pin-2(3)-ene, 2,6-di-tert-butylpyridine, 1,1'-oxybis-octane, 1,5 -Hexanediol, 1-(1,1-dimethyleth yl)-3,5-dimethylbenzene, menthylisovalerate, 1-methyl-7-(1-methylpropyl)naphthalene, tert-butanol, himachalen_beta, dimethoxymethane, 1,2,3,4,5,6,7,8-octahydroanthracene, (1,1-dimethylethyl)benzene, 1,2-hexanediol, cyclohexene, perhydrofarnesylacetone, delta-cadinene, isopropylbenzene, undecylbenzene, 2,5-hexanediol, dipropyleneglycol, 1,6-dimethyl-4-isopropyltetralin, di-n-propylether , diisopropylether, cuparen, 1,4-bis(1-methylethyl)-benzene, 2,4-dimethyl-3-thiapentane, 1-methoxy-4-(2,4,4-trimethylpentan-2-yl)benzene, 1 -may be selected from ethoxybutane, decylbenzene and cycloheptane, but is not limited thereto.

In one embodiment of the present specification, the non-solvent in which the main solvent and the co-solvent are mixed has a PVC solubility score value of less than 11 according to Equation 1 in consideration of the mixing ratio of each solvent in the mixed solvent, that is, the weight fraction. , and is selected in consideration of the difference in solubility for the good solvent and polyvinyl chloride used together.

In one embodiment of the present specification, the main solvent of the non-solvent may be selected from among propanol, diethylether, n-heptane, hexane, 1,4-butadiol, octane, cyclopentane, propyleneglycol, dimethylsulfoxide, methanol, ethanol and 2-propanol there is.

In one embodiment of the present specification, the co-solvent of the non-solvent is propanol, diethylether, n-heptane, hexane, 1,4-butadiol, octane, cyclopentane, propyleneglycol, dimethylsulfoxide, methanol, ethanol, 2-propanol, 2,4 -dimethylhexane, 3-ethyl-2,4-dimethylpentane, 2,7-dimethyloctane, 2,6-dimethyl-heptane, 2-methyl-3-ethylpentane, 3,3-dimethylhexane, 2,3,5-trimethylhexane, 2 ,3,4-trimethylpentane, 2,2-dimethylheptane, 3,3-dimethylpentane, 1-(perfluorobutyl)icosane, 2,5-dimethylhexane, 2,2-dimethylhexane, 2,3,3-trimethylpentane, formicacid, 2, 2,6-trimethylheptane, 2,2,4-trimethylhexane, 2,2,3-trimethylpentane, 2,3,3,4-tetramethylpentane, 2,4,4-trimethylhexane, 1-hydroxybenzotriazole, 3-ethyl-2, 2-dimethyl-pentane, 2,2,4,6,6-pentamethylheptane, 2,2,5-trimethylhexane, 2-nitroethanol, 2,2,3,4-tetramethylpentane, octamethyltrisiloxane, 2,2,3,3- tetramethylhexane, 1,5-pentanediol, 1,1,1,2,2,3,3-heptafluoroundecane, 2,2,5,5-tetramethylhexane, 2,2,3,3-tetramethylpentane, 2,2,4- trimethylpentane, 2,2,4,4-tetramethylpentane, dodecamethylc yclohexasiloxane, acetaldehydeammonia, 1,1,1,2,2,3,3,4,4-nonafluorohexadecane, dodecamethylpentasiloxane, 1,1,1,2,2,3,3-heptafluorononane, 1,3-dioxolan-2- one, decamethyltetrasiloxane, 1-(perfluorohexyl)docosane, hexamethyldisilane, 1,1,1,2,2,3,3,4,4,5,5-undecafluorononadecane, tetradecamethylhexasiloxane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6-tridecafluorohexacosane, 1,1,1,2,2,3,3,4,4-nonafluorooundecane, 1,1,1,2,2,3,3 ,4,4-nonafluorododecane, hexadecamethylheptasiloxane, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorotetracosane, propynol, 1,1,1,2,2,3 ,3,4,4-nonafluorodecane, ethanolamine, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorodocosane, 2-hydroxypropanenitrile, 1,1,1,2 ,2,3,3,4,4,5,5,6,6-tridecafluoroicosane, 1,1,1,2,2,3,3,4,4-nonafluorononane, 1,1,1,2,2 ,3,3,4,4,5,5,6,6-tridecafluorooctadecane, cis-2-butene-1,4-diol, 1,1,1,2,2,3,3,4,4,5 -decafluorononane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorooctacosane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6-tridecafluorohexadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8 -heptadeca fluorohexacosane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoropentacosane, 1,1,1,2,2,3, 3,4,4,5,5,6,6-tridecafluoropentadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8- heptadecafluorotetracosane, 1-(perfluorohexyl)octane, 1,1,1,2,2,3,3,4,4,5,5-undecafluorodecane, 1,1,1,2,2,3,3,4,4 ,5,5,6,6-tridecafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorodocosane, 1h,8h -hexadecafluorooctane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotriacontane, hexacosamethyldodecasiloxane, 1 ,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoroicosane, 1,1,1,2,2,3,3,4 ,4,5,5,6,6-tridecafluorododecane, 1,3-propanediol, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooundecane, 1,1 ,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorononadecane, 1,1,1,2,2,3,3,4,4 ,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorononacosane, 1,1,1,2,2,3,3,4,4,5,5,6 ,6,7,7,8,8-heptadecafluorooctadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-pentadecafluorotetradecane, 1,1,1 ,2,2,3,3,4,4,5,5,6-dodecafluorononane, 1,1,1,2,2,3,3,4,4,5,5-undecafluor ooctane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-pentadecafluorotridecane, 1-perfluorooctyloctane, 1,1,1,2,2,3, 3,4,4,5,5,6,6-tridecafluorodecane, 1,1,1,2,2,3,3,4,4,13,13,14,14,15,15,16,16, 16-octadecafluorohexadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoropentadecane, 1,1,1,2,2, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorohentriacontane, acetamidomethanol, 1,1,1, 2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorotetradecane, 1-(henicosafluorodecyl)undecane, 1,1,1,2,2,3,3 ,4,4,5,5,6,6,7,7,8,8-heptadecafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7 ,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorooctacosane, ethylenecyanohydrin, 1,1,1,2,2,3,3,4,4,5,5,6 ,6,7,7,8,8,9,9,10,10-henicosafluoroicosane, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooctane, perfluorooctylbromide , 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorooctadecane, 1,1,1 ,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorododecane, 1,1,1,2,2,3,3,4,4,5 ,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorotetracosane, pentacosafluorot ricosane, 1-(perfluorohexyl)propane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10 -henicosafluoropentadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorodecane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotetradecane, 1,1,1,2,2,3,3,4,4 ,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorooctadecane, 1,1,1,2,2,3,3,4 ,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5 ,6,6,7,7,8,8,9,9,10,10-henicosafluorododecane, glycol, tetratriacontafluorotetracosane, glycerol, 1,1,1,2,2,3,3,4,4,5,5 ,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorotetradecane, methylhydroperoxide, H ₂ O, 4-hydroxymethyl-1,3-dioxolan-2-one , hydroxyacetonitrile, perfluorooctane, perfluorodecalin, methanesulfonicacid, formamide, 4-methylphenol, PBr ₃ , H ₂ O ₂ , BBr ₃ , methylbutane, 2,2-dimethylbutane, 2,2,3-trimethyl-butane, 2,2-dimethylpentane, 2,3-dimethylbutane, pentane, 2,4-dimethylpentane, 2-methylpentane, 2-methylhexane, 3-methylpentane, 3-methylhexane, 3-ethylpentane, 3-et hyl-3-methylpentane, 2-methylheptane, 3,3-diethylpentane, 3-methylheptane, 2-methyloctane, 4-methylheptane, 3-ethylheptane, 2-methyl-nonane, 3-methyloctane, 4-methyloctane, 2-methyldecane, 3-methyl-nonane, 1,1,3,3-tetramethylcyclopentane, 1,3-butanediol, 4-methyldecane, 5-methyl-nonane, 4-methyl-nonane, 1,1-dimethylcyclopentane, 1,1,2- trimethylcyclopentane, 1,1,2-trimethylcyclohexane, n-decane, n-nonane, isobutylcyclopentane, isopropylcyclopentane, tert-butylcyclohexane, pentadecane, tridecane, 1,1,3-trimethylcyclopentane, 1,1,3-trimethylcyclohexane, nonadecane, heptadecane, octadecane, ethylcyclopentane, dodecane, n-undecane, propylcyclopentane, isobutylcyclohexane, isopropylcyclohexane, 1-ethyl-1-methylcyclopentane, 2,3,3-trimethyl-1-butene, 2,4,4-trimethyl-1-pentene, n- Hexylcyclopentane, pentylcyclopentane, 1-isopropyl-4-methylcyclohexane, trimethylaluminum, n-tetradecylcyclopentane, tridecylcyclopentane, tetradecane, n-dodecylcyclopentane, n-decylcyclopentane, n-propylcyclohexane, Ethylcyclohexane, 3,3-dimethyl-1-butene, n-hexadecane, pentene, 2,3,3-trimethyl-1-pentene, decylcyclohexane, pentylcyclohexane, 3,4-dicyclohexyl-2,5-dimethylhexane, 2-methyl- 1-butene, 3,3-dimethyl-1-pentene, 4,4-dimethyl-1-pentene, butylcyclohexane, methylcyclopentane, methylcyclohexane, decahydronaphthalene, hexahydroindene, bicyclohexyl, cyclohexane, 2,4,4-trimethyl-2-pentene, 2,3-dimethyl-1-pentene, tricyclohexylmethane, butylcyclopentane, 1-hexene, 2,3-dimethyl-1-butene, methylformamide, 3,3-dimethyl-1-butyne, triethyleneglycol, 3-methoxy-1,2- propanediol, 2,4-dimethyl-1-pentene, 1-heptene, 3-methyl-1-pentene, 3-ethyl-2-methyl-1-pentene, 1,4-di-tert-butylbenzene, diethyleneglycol, octane, methoxyaceticacid, 1-nonene, 4-methyl-1-hexene, 1,1,3,4,4,6-hexamethyltetralin, 1,3,5-triisopropylbenzene, 1,2,2,6,6-pentamethylpiperidine, 1, 4-diethylbenzene, 2-methyl-2-butene, isoprene, 4-methyl-1-pentene, 1-tetradecene, 3-ethyl-1-pentene, 2-methyl-3-heptene, 1-decene, 2,3, 4-trimethyl-2-pentene; 1-nonadecene, butylbenzene, 2-ethoxy-2-methyl-propane, 1,2-diethylbenzene, ethanedial, cyclohexylbenzene, galaxolide, 1,2,3,4-tetramethylbenzene, 1,2,3,5-tetramethylbenzene, pentaethylbenzene, 1,3,5-trimethylbenzene, isobutanol, peroxyaceticacid, 1,6-hexanediol, 2,6-di-tert-butyl-4-methylpyridine, 2,2'-(methylimino)bis-ethanol, 1,3-bis( 1-methylethyl)-benzene, 2,7-diisopropylnaphthalene, 1,2,3,5-tetraethylbenzene, tetrahydro-2,2,5,5-tetramethylfuran, 1,5-diisopropylnaphthalene, 2,3-butanediol, 1,2 -diisopropylbenzene, 1-(2-pentyl)-4-(3-pentyl)benzene, tetradecylbenzene, pentadecylbenzene, ethylbenzene, 3,6-bis-(methoxymethyl)-durene, 5-hydroxy-6-methoxy-8-[( 4-amino-1-methylbutyl)amino]quinoline trihydrobromide, 1-(1,1-dimethylethyl)-3-methylbenzene, tridecylbenzene, 1-(methoxymethyl)-4-(2,4,4-trimethylpentan-2-yl) benzene, dodecylbenzene, 1,2,4-trimethylbenzene, 1-cyclohexyl-2-isopropylbenzene, 4,6,6-Trimethylbicyklo(3,1,1)hept-3-ene, 2,6-di-tert-butylpyridine, 1,1'-oxybis-octane, 1,5-he xanediol, 1-(1,1-dimethylethyl)-3,5-dimethylbenzene, menthylisovalerate, 1-methyl-7-(1-methylpropyl)naphthalene, tert-butanol, beta-himachalen, dimethoxymethane, 1,2,3,4 ,5,6,7,8-octahydroanthracene, tert-butylbenzene, 1,2-hexanediol, cyclohexene, 6,10,14-trimethylpentadecan-2-one, delta-cadinene, isopropylbenzene, undecylbenzene, 2,5-hexanediol, dipropyleneglycol , 1,6-dimethyl-4-isopropyltetralin, di-n-propylether, diisopropylether, cuparene, 1,4-bis(1-methylethyl)-benzene, 2,4-dimethyl-3-thiapentane, 1-methoxy-4- It may be selected from (2,4,4-trimethylpentan-2-yl)benzene, 1-ethoxybutane, decylbenzene and cycloheptane, but is not limited thereto.

Another embodiment of the present specification provides recycled polyvinyl chloride obtained by filtering the above-described composition.

In another embodiment of the present specification, most of the polyvinyl chloride extracted by the good solvent from the waste containing polyvinyl chloride in the waste polyvinyl chloride recycling composition is precipitated by the non-solvent and is in a solid state. can be submerged by Recycled polyvinyl chloride can be obtained by filtering the composition containing the precipitated polyvinyl chloride.

In another embodiment of the present specification, the recycled polyvinyl chloride includes both a state in which the composition is filtered, or a state in which excess solvents are removed by drying after filtering.

In one embodiment of the present specification, the recycled polyvinyl chloride includes additives derived from waste. At this time, the additive derived from the waste is not particularly limited as long as it is an additive that has been added to produce the waste, but includes, for example, a plasticizer. When producing a product using the recycled polyvinyl chloride, additives such as plasticizers are already included, so there is an advantage in that additives such as plasticizers are not added or the amount of additives can be reduced.

In one embodiment of the present specification, the waste is not particularly limited as long as it contains PVC, but for example, construction materials (pipes, window frames, etc.) containing PVC, wire coatings, synthetic leather, rubber basins, hoses, flooring materials , packaging materials, medical infusion bags, toys, and the like.

In one embodiment of the present specification, the recycled polyvinyl chloride is PVC extracted by solvent extraction, and during extraction with a solvent, low molecular weight PVCs are filtered to have an average molecular weight greater than PVC produced by polymerization or PVC in waste. it rises In addition, since the average molecular weight of PVC changes, dynamic physical properties affected by the average molecular weight, such as its glass transition temperature (Tg) and melting temperature (Tm), change, so as the average molecular weight of PVC increases, the glass transition temperature (Tg), Dynamic properties such as melting temperature (Tm) also increase.

Another embodiment of the present specification includes the steps of selecting a good solvent and non-solvent for polyvinyl chloride extraction using the above-described solvent screening method; contacting the waste containing the polyvinyl chloride with the good solvent and dissolving the polyvinyl chloride in the waste with the good solvent to obtain a polyvinyl chloride solution (hereinafter referred to as a dissolution process); and precipitating polyvinyl chloride from the dissolving solution by contacting the dissolving solution with the non-solvent (hereinafter, referred to as a precipitation process). .

In the present specification, the method of recycling wastes The description of the step of selecting a good solvent and non-solvent for polyvinyl chloride extraction may refer to the above-described screening method for a solvent for extraction of PVC.

In one embodiment of the present specification, the step of extracting the polyvinyl chloride may include polyvinyl chloride, further comprising a separation step of separating solids from the polyvinyl chloride solution obtained in the dissolution step. At this time, the solid content is a solid that does not dissolve in a good solvent for polyvinyl chloride, and corresponds to an impurity.

In one embodiment of the present specification, the step of extracting the polyvinyl chloride may further include a rinsing process of rinsing the polyvinyl chloride precipitated by the precipitation process.

In one embodiment of the present specification, the step of extracting the polyvinyl chloride may further include a drying process of drying the polyvinyl chloride precipitated by the precipitation process.

Hereinafter, the present specification will be described in more detail through examples. However, the following examples are only for exemplifying the present specification, and are not intended to limit the present specification.

[Example]

A solution was prepared by adding a PVC waste sample to the good solvent in Table 1 and stirring at 120 rpm for 3 hours at room temperature. Then, PVC was precipitated by dropping the non-solvent of Table 1 below into the solution. At this time, the weight ratio of waste PVC:good solvent:non-solvent is 1:5:20, and the weight ratio of the main solvent and the auxiliary solvent among the good solvents is 60:40.

After all the non-solvent was dropped, the reaction solution was filtered through a filter to obtain a filtered solid. The filtered solid was additionally washed with the same non-solvent as the non-solvent and dried to obtain recycled PVC.

good solvent non-solvent sample (g) Recovery (g) PVC recovery rate main solvent auxiliary solvent Example 1 cyclohexanone DMPA IPA 20 6.8 51% Example 2 cyclohexanone MC IPA 20 2.3 14% Example 3 DMPA MC IPA 20 0.9 7%

★ DMPA: N,n-dimethylpropanamide, IPA: 2-propanol, MC: dichloromethane

The PVC solubility score values of the solvents used in Table 1 are shown in Table 2 below. Looking at Table 1 with reference to the PVC solubility score values in Table 2, in the case of dichloromethane (MC), the PVC solubility score is the lowest among the good solvents used, that is, the solubility of PVC is the lowest among the good solvents in the examples. . Therefore, it can be confirmed that Examples 2 and 3 using dichloromethane (MC) as a co-solvent have a lower recovery rate than Example 1 in which the main solvent is cyclohexanone and the co-solvent is N,n-dimethylpropanamide (DMPA).

PVC solubility score value division cyclohexanone 13.60 good solvent DMPA 13.77 good solvent MC 13.14 good solvent IPA 8.95 non-solvent

Claims (14)

Selecting two or more of the solvents having a PVC solubility score value of 11 or more according to the following formula 1 as a good solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride; and
A method for screening a solvent for extracting polyvinyl chloride comprising the step of selecting at least one of solvents having a PVC solubility score value of less than 11 according to Equation 1 below as a non-solvent for extracting the polyvinyl chloride from waste containing polyvinyl chloride. :
[Equation 1]

In Equation 1 above,
x _k is a real number from -20 to 20, k is an integer from 1 to 9,

is the chemical potential of the solvent,

In, i is the solute, j is the solvent,
r _i is the Hansen dissolution parameter distance of the solvent,
V _sol is the molecular volume of the solvent,
Sol is the solvent, PVC is polyvinyl chloride, and dop is diethylhexyl phthalate. The method of claim 1, wherein the good solvent has a boiling point of 85° C. or higher. polyvinyl chloride extracted from waste containing polyvinyl chloride;
Two or more good solvents among solvents having a PVC solubility score value of 11 or more according to Formula 1 below; and
A waste polyvinyl chloride recycling composition comprising at least one non-solvent among solvents having a PVC solubility score value of less than 11 according to Formula 1 below:
[Equation 1]

In Equation 1 above,
x _k is a real number from -20 to 20, k is an integer from 1 to 9,

is the chemical potential of the solvent,

In, i is the solute, j is the solvent,
r _i is the Hansen dissolution parameter distance of the solvent,
V _sol is the molecular volume of the solvent,
Sol is the solvent, PVC is polyvinyl chloride, and dop is diethylhexyl phthalate. The waste polyvinyl chloride recycling composition according to claim 3, wherein the boiling point of the good solvent is 85° C. or higher. The waste poly according to claim 3, wherein the good solvent and the non-solvent are each independently selected from alcohol solvents, ketone solvents, ester solvents, ether solvents, polar aprotic solvents, hydrocarbon solvents, and halogen-containing solvents. Vinyl chloride recycling composition. The method according to claim 3, wherein the good solvent, 50% by weight or more of the main solvent in the good solvent; and an auxiliary solvent different from the main solvent and less than 50% by weight in the good solvent. The method according to claim 6, wherein the main solvent of the good solvent is n, n-dimethylacetamide, cyclopentanone, 2-pentanone, dioxane, nitrobenzene, ethylacetate, benzene, trichloroethylene, 1,2-dichloroethane, chloroform, cyclohexanone, tetrahydrofuran, 2-butanone, A composition for recycling waste polyvinyl chloride selected from acetone and 4-methylpentan-2-one. The method according to claim 6, wherein the co-solvent of the good solvent is n, n-dimethylacetamide, cyclopentanone, 2-pentanone, dioxane, nitrobenzene, ethylacetate, benzene, trichloroethylene, 1,2-dichloroethane, chloroform, cyclohexanone, tetrahydrofuran, 2-butanone, acetone, 4-methylpentan-2-one, 1,2,3-propanetrioltrinitrate, tetramethylenesulfoxide, 1-piperidinecarboxaldehyde, 1-acetylpiperidine, n-methyl-2-pyrrolidinone, 1,4-dimethylpyrrolidone, 1,3-dimethyl-2- imidazolidinone, 1,5-dimethylpyrrolidone, hexamethylphosphoramide, dimethylpropyleneurea, 1-ethyl-2-pyrrolidone, 1,3-dimethylpyrrolidone, 4-acetylmorpholine, 1-[ethoxy(methyl)phosphoryl]methylpiperidine, n,n-dimethylpropanamide, tributylphosphineoxide, 1 -propyl-2-pyrrolidinone, n-isopropylpyrrolidone, n,n,4-trimethylbenzamide, n-methyl-o-acetotoluidide, 2-cyclohexen-1-one, n,n,3-trimethylbenzamide, n,n-dimethylbenzamide, trimethylenesulfide , n,n,2-trimethylbenzamide, 1,3-dioxane, tetramethylurea, 2-azacyclooctanone, 4-methyl-1-propyl-2-pyrrolidinone, 5-methyl-1-propyl-2-pyrr olidinone, n,n-diethylacetamide, 1,3-propanedithiol, 4,5-dihydro-2-methylthiazole, pyrrolidine, 3-methoxy-n,n-dimethylpropanamide, 4-fluoro-n,n-dimethylbenzamide, cycloheptanone, 1- morpholinopentan-1-one, 3-methylcyclohexanone, n,n-dimethylbutanamide, caprolactam, tetrahydrothiophene, 2-methoxy-n,n-dimethylbenzamide, dimethylformamide, 1,2-ethanedithiol, 1,4,7,10-tetraoxacyclododecane, ethyl 1 ,3-dimethyl-2-oxopyrrolidine-3-carboxylate, 1-(4-methylpiperidyl)butan-1-one, 2-methylcyclohexanone, 1-(2,6-dimethylmorpholin-4-yl)butan-1-one, n ,n-diethylformamide, 4-(propan-2-yl)phenyldimethylcarbamate, n,n-dimethyl-3-phenylpropanamide, n-(1-methyl-2-methoxyethyl)-n-chloroacetyl-2-ethyl-6-methylaniline, dichloroacetylchloride, n,n-diethyl-3-(2-methyl-1,3-dioxolan-2-yl)propanamide, n-acetylcaprolactam, d-camphor, n-methylformanilide, ethyl n-acetyl-n-ethyl-beta- alaninate, (2,5-dimethoxyphenyl)acetaldehyde, 4-methylcyclohexanone, 2,6-dimethyl-2,5-cyclohexadiene-1,4-dione, 4-vinylcyclohexene dioxi de, nicotine, 2-methylcyclopentanone, dimethylveronal, diethyl(trichloromethyl)phosphonate, 3-methyl-6-isopropylidenecyclohexanone, 1-heptanoyl-4-methylpiperazine, n,n-diethyl-4-oxopentanamide, n-ethyl-n-phenylacetamide, dimethyldisulfide, 4,6-dimethylpyrimidine, 1,4-oxathiane, n-sec-butylpyrrolidone, 1-(4-methylpiperidin-1-yl)pentan-1-one, 1-butyl-5-methyl-2-pyrrolidinone, 3 -methyl-2-oxazolidone, n,n-dimethyl-4-(propan-2-yl)benzamide, 2,5-dimethylpyrazine, mesitenelactone, propyl 4-(dimethylamino)-4-oxobutanoate, diethyldimethylamidophosphate, isophorone, n,n -dimethyl 4-methoxybenzamide, 1,2,3,5-tetramethoxybenzene, 3,4,5-trimethoxytoluene, caprolactone, 3-methyl-piperidin-2-one, 2-ethylhexylsalicylate, ethyl 3-ethyl-2-oxooxolane-3 -carboxylate, 1-ethyl-3,5,7-trimethyl-1,3-dihydro-azepin-2-one, dimethylisosorbide, cyclotenebutyrate, ethyl 2-(2-methoxyphenoxy)acetate, cyrene, 2,4,4-trimethyl -6-oxocyclohex-1-en-1-yl acetate, 1,2-benzodihydropyrone, tripropyleneglycolethyletherisomer, 3,4 -dimethoxypropiophenone, methylaminoacetaldehydedimethylacetal, methyl 2,6-dimethoxybenzoate, 1,3-dimethyl-1,2,3,4-tetrahydro-4-quinolinone, ethyl 3,5-dimethoxybenzoate, 4-methoxybenzaldehyde, ethyl (4-methylphenoxy)acetate , 2,3,4-trimethoxyacetophenone, ethylimidazole, methyl 2-oxocyclooctanecarboxylate, ethyl 2-methyl-4-oxocyclohex-2-enecarboxylate, 2',5'-dimethoxyacetophenone, isobutylformate, ethyl 2-(2,6-dimethylphenoxy)acetate , ethyl 2-(benzyloxy)acetate, hexylacetoacetate, diethylglutarate, 4-carbethoxy-2-ethyl-3-methyl-2-cyclohexen-1-one, nepetalactone, tripropyleneglycolbutylether, ethyl 5,5-dimethyl-2-oxofuran-3- carboxylate, 2-ethoxybenzaldehyde, methyl-2,4-dimethoxybenzoate, 5,5-diethyl-4-methoxyfuran-2(5h)-one, ethyl 4,6-dimethyl-2-oxo-3,4-dihydro-2h- pyran-5-carboxylate, ethyl 4-phenoxybutanoate, 2,5-dimethoxypropiophenone, ethyl 5,5-dimethyl-2-oxotetrahydrofuran-3-carboxylate, ethyl 3-(5-oxotetrahydrofuran-2-yl)propanoate, benzylsalicylate, n, n-diethyl-4-methyl-4h-pyridine -1-carboxamide, p-tolylacetonitrile, 5-methyl-2(3h)-furanone, 1-methyl-2-(3-pyridyl)pyrrole, formicacidpentylester, ethyl 4-(dimethylamino)benzoate, n-butylacetamide, 4-methylbenzaldehyde , 3',4'-dimethoxyisobutyrophenone, benzaldehyde, 1,2,4-triethoxybenzene, isobutylphenoxyacetate, m-dimethoxybenzene, 3-oxobutanoicacid-1-methylethylester, ethyl2-(cyclohexylmethyl)-3-oxobutanoate, 5-ethyldihydro-2(3h )-furanone, 2-isopropyl-n,2,3-trimethylbutyramide, 4-(4-methylpiperidino)pyridine, 3-oxaspiro-undecan-2-one, formicacidhexylester, methyl 2,2-dimethyl-4,6-dioxocyclohexanecarboxylate, ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate, benzenepropanenitrile, 4,4-dimethyl-5,6,7,8-tetrahydro-1H-isochromen-3-one, ethyl 2, 6-dimethyl-4-oxocyclohex-2-enecarboxylate, n,n-dimethyloctanamide, 1-(2,5-dimethylpyrrolidin-1-yl)pentan-1-one, gamma-butyrolactone, t-butylacetoacetate, 4-(methoxymethyl) anisole, mintlactone, 2-methoxyethylacetoacetate, p-(2,2-dimethoxyethoxy)anisole, 1-(1-ethylpropyl)- 2-pyrrolizinone, 2,5-dimethoxytetrahydrofuran, 2-acetoxy-1-ethoxypropane, 1,3-dimethyl-4-ethylcarbostyril, 1-(4-methoxyphenoxy)acetone, glycerol tripropionate, 3-dimethylaminoanisole, 2,4-dimethylbenzaldehyde, paraldehyde, glyceryl tributyrate, 2,3,4,5-tetramethoxytoluene, 1,3,3-trimethyl-2h-quinolin-4-one, 3-cyclohexene-1-carboxaldehyde, isobutylsalicylate, 2-(1-methylpropyl)phenyl methylcarbamate , (2,2-diethoxyethoxy)benzene, methyl 3-(5-oxooxolan-2-yl)propanoate, 4-acetoxy-2,5-dimethyl-3(2h)-furanone, 3-ethylchroman-2-one, ethyl 3-cyclohexyl-3-oxopropanoate, 1-propyl-2(1h)-pyridinone, 7-methyl-4,4a,5,6-tetrahydro-3H-naphthalen-2-one, 1-(3,5-dimethylphenoxy) propan-2-one, ethyl 3-(2,5,5-trimethyl-1,3-dioxan-2-yl)propanoate, 1-tetralone, 4-methyl-3-penten-2-one, 1-tert- butylpyrrolidin-2-one, methyl 2-(4-(tert-butyl)phenoxy)acetate, 2,6,10,10-tetramethyl-1-oxaspiro(4,5)deca-2,6-dien-8-one , ethyl 4-ethoxybenzoate, maltyl isobutyrate, 4-methyl-1,3-dioxane, 2-acetylpyridine, 1,4-diethoxybe nzene, 1-(2,2-diethoxyethoxy)-4-methylbenzene, cyclohexyl lactone, 2-(2-butoxyethoxy)ethyl acetate, n-methylbenzamide, 3-acetyl-5-propyldihydrofuran-2(3h)-one, 2, 2-diethoxyethoxymethylbenzene, n-methyl-m-tolylcarbamate, ethylene glycol dibutyrate, 4-cyano-2-fluorobenzoyl chloride, 3,6-dimethyl-2,3,3a,4,5,7a-hexahydro-1-benzofuran-2 -one, ethyl 2-(2-oxocyclohexyl)acetate, 4-(2-acetoxyethoxy)toluene, 4-(2,5-dimethylpyrrol-1-yl)-2,6-dimethylmorpholine, 1-butylpyridin-2(1h) -one, n,n-dimethyldecanamide, valeraldehyde, 2-(3-pyridyl)piperidine, 4-methoxypropiophenone, 4-tert-butyl-n,n-dimethylbenzamide, acetylacetone, ethyl 2-methyl-2-phenoxypropanoate, ethyl 2- acetyl-5-oxohexanoate, n-sec-isopentylpyrrolidone, 4-methyl-1-tetralone, 2-butoxyethanolacetate, isobutyric anhydride, n-hexyl-2-pyrrolidinone, 3-benzyl-2,4-pentanedione, ethyl 5-oxodecanoate, methyl 2-hexyl-3-oxocyclopentanecarboxylate, 8-ethyl-1-oxaspiro[4.5]decan-2-one, n,n'-dibutylethyleneurea, methyl 3-oxododecanoate, 3-methyl-5-is opropyl-4-carbethoxy-2-cyclohexene-1-one, 6-pentyl-2h-pyran-2-one, m-methoxyacetophenone, benzisoxazole, n,n-diethylnicotinamide, ethyl 3-(2-oxocyclohexyl)propanoate, propyl 4 -ethoxybenzoate, 5-butyl-5-ethyltetrahydro-2h-pyran-2-one, ethyl 2-oxo-1-propylcyclohexanecarboxylate, 2-propoxyethylacetate, dimethyl 2-methylglutarate, o-methylcorypalline, 1-pentylimidazole, n-formylmorpholine, methyl 2-butoxybenzoate, 7-butyloxepan-2-one, propanoic anhydride, acetophenone, 1-(3-methylpiperidin-1-yl)pentan-1-one, 1-butyl-2-methyl-imidazole, anisaldehyd diethyl acetal, 1- (2-methylpiperidin-1-yl)pentan-1-one, 5-butyl-5-ethyloxolan-2-one, 2,4,6-trimethylbenzaldehyde, n,n-diethylcyclohex-3-ene-1-carboxamide, butan -2-yl 4-methoxybenzoate, propylene glycol alpha methylbenzyl ether, 5-(benzyloxy)pentan-2-one, n,n-dimethyldodecanamide, n,n-diethyl-m-toluamide, (s)-dihydrobovolide, 3,4 -dihydro-3-oxoedulan, butyl 2-methoxybenzoate, 7-cyclohexyloxepan-2-one, dimethyl 1,4-cyclohexanedicarboxylate, delta-de calactone, ethyl 2,5-dimethylphenoxyisobutyrate, 4a,8-dimethyl-3,4,5,6,7,8-hexahydronaphthalen-2-one, 5-hydroxy-2-decenoic acid lactone, ethyl 2-(2-oxooxolan -3-yl)acetate, methyloctalacton, 3-pentanone, 2,4-diacetylfuran, 2'-pentyloxyacetophenone, furfural, diethylmalonate, 1-(azepan-1-yl)butan-1-one, p-methoxyvalerophenone, n,n -diethylbenzamide, 4,4-dimethylnaphthalen-1(4h)-one, gamma-decalactone, piperitone, ethylacetoacetate, 1-hexylimidazole, dihydromintlactone, 4-heptanone, dimethyl glutarate, 4-(benzyloxy)-4-methylpentan-2-one , 3,3-dimethyl-1-phenoxybutan-2-one, molinate, 7-methoxy-2,2-dimethylchromene, propiophenone, ethyl 2-benzoyl-3-methylbutanoate, n,n-diethyl-2-methylcyclohexane-1- carboxamide, 5-methyl-5-propyl-1,3-dioxan-2-one, 3-methyl-5-(2-oxopropyl)oxolan-2-one, 1-(azepan-1-yl)pentan-1- one, 2-(2-ethoxyethoxy)-ethanolacetate, 2-methyl-1-(1-phenylethyl)imidazole, methyl 6-(diethylamino)-6-oxohexanoate, 5-undecanolide, 4-methyl-5-pentyloxolan-2- one, 2-ethoxyethylbenzoate, 3 ,4-dihydro-2(1h)-naphthalenone, 1-methoxy-3-(4-methylphenoxy)benzene, n,n-dihexylacetamide, dihydroactinidiolide, 1-pentanoylpiperidine, propan-2-yl 6-(dimethylamino)-6- oxohexanoate, 5,5-dimethyl-4-(3-oxobutyl)oxolan-2-one, 1-octylpyrrolidin-2-one, gamma-undecalactone, 4-ethoxyphenethylacetate, 2-hexanoylcyclohexan-1-one, gamma-methyldecalactone, 1 -(azepan-1-yl)-3-methylbutan-1-one, methyl dihydrojasmonate, p-methoxypivalophenone, 2-acetyl-4-tert-butylcyclohexan-1-one, 4,4-dibutyl-gamma-butyrolactone, 4- Ethyl-2,6-dimethoxyphenol, n,n-diethylcyclohexanecarboxamide, 5-dodecanolide, 1-hexanoylpiperidine, 1-heptyl-1h-imidazole, 2-isopropoxyethylbenzoate, butanoic anhydride, methylacetoacetate, 2,3,3-trimethylindanone, 5-hexyl -4-methyldihydrofuran-2(3h)-one, phenoxyacetone, 1-propoxy-2-propanol, ethyl di-n-propylthiolcarbamate, 1,2-dimethoxy-4-methylbenzene, tetrahydrofurfurylpropionate, 2-pyrrolidon, 2-methoxypropyl acetate, 4-dodecanolide, 2-ethoxy-4-(methoxymethyl)phenol, n-isopentylprop ionanilide, pentylpiperidine-1-carboxylate, 1-(2-ethylpiperidin-1-yl)butan-1-one, isopropyl 2-isopropoxy-benzoate, n,n-dibutylpentanamide, 2,3-dihydro-2,2-dimethyl- 7-hydroxybenzofuran, 2-heptanone, 2-[2-(2-methoxypropoxy)propoxy]-1-propanol, 1,2,3,4,5,6,7,8-octahydro-2,8,8-trimethylnaphthalene -2-carbaldehyde, cycloate, 4-methylquinoline, 5-nonanone, n,n-dipentylbutanamide, 3-dimethylamino-2-methylpropiophenone, 2-ethyl-1-pentanoylpiperidine, 4-(ethoxymethyl)-2-methoxyphenol, n,n -dibutylhexanamide, 2-ethylhexyllactate, tripropyleneglycolmonomethylether, magnolione, 1-octylimidazole, butylformate, butylate, 5-ethyl-2-(2-furyl)-4-propyl-m-dioxane, 1-methoxy-4-(2-methoxyethoxymethyl) benzene, hexylpiperidine-1-carboxylate, 4-propylcyclohexanone, 2,5,8,11,14,17-hexaoxaoctadecane, ethyl n,n-diethylsuccinamate, ethyl dipentylcarbamate, 2-butoxyethyl 4-methylbenzoate, 4'-pentylacetophenone, vernolate, 2-cyclopentyl cyclopentanone, 2-butoxyethylbenzoate, trimethoxymethane, phenoyethylpropionate, 4'-isobutylacetophenone, 2-methylindole, n,n,2-triethylhexanamide, 2-methoxy-4-propylphenol, 3,5-bis(2-methylpropyl)cyclohexane-1,2-dione, 2,4-diethoxy-6 -methylpyrimidine, ethyl-2-hydroxybenzoate, p-ethoxybenzaldehyde, glycerol triacetate, p-hexylacetophenone, n,n-diisopropyl-phenylacetamide, 3-ethylundecane-4,6-dione, 1-benzazine, methyl 5-methylsalicylate, n,n -dipropylheptanamide, 4-methylpyridine, 4-pentylcyclohexanone, 4-pyridinecarboxaldehyde, oxolan-2-yl methylheptanoate, 2-(2-(4-methylcyclohex-3-enyl)propyl)cyclopentanone, 2-isopropoxyphenol, octanophenon, 2-benzyl- 4-methyl-1,3-dioxane, ethylbenzoate, 4-methyl-2-(2-methylpropyl)oxan-4-ol, 3-(diethylamino)propiophenone, benzylacetoacetate, isoamylbenzoate, pyridine, dichloromethane and 1,1,2, A composition for recycling waste polyvinyl chloride selected from 2-tetrachloroethane. The method according to claim 3, wherein the non-solvent, 50% by weight or more of the main solvent in the non-solvent; and an auxiliary solvent different from the main solvent and less than 50% by weight in the non-solvent. The waste polychlorination according to claim 9, wherein the main solvent of the non-solvent is selected from among propanol, diethylether, n-heptane, hexane, 1,4-butadiol, octane, cyclopentane, propyleneglycol, dimethylsulfoxide, methanol, ethanol, and 2-propanol. Vinyl recycling composition. The method according to claim 9, wherein the co-solvent of the non-solvent is propanol, diethylether, n-heptane, hexane, 1,4-butadiol, octane, cyclopentane, propyleneglycol, dimethylsulfoxide, methanol, ethanol, 2-propanol, 2,4-dimethylhexane, 3-ethyl-2,4-dimethylpentane, 2,7-dimethyloctane, 2,6-dimethyl-heptane, 2-methyl-3-ethylpentane, 3,3-dimethylhexane, 2,3,5-trimethylhexane, 2,3, 4-trimethylpentane, 2,2-dimethylheptane, 3,3-dimethylpentane, 1-(perfluorobutyl)icosane, 2,5-dimethylhexane, 2,2-dimethylhexane, 2,3,3-trimethylpentane, formicacid, 2,2,6 -trimethylheptane, 2,2,4-trimethylhexane, 2,2,3-trimethylpentane, 2,3,3,4-tetramethylpentane, 2,4,4-trimethylhexane, 1-hydroxybenzotriazole, 3-ethyl-2,2-dimethyl -pentane, 2,2,4,6,6-pentamethylheptane, 2,2,5-trimethylhexane, 2-nitroethanol, 2,2,3,4-tetramethylpentane, octamethyltrisiloxane, 2,2,3,3-tetramethylhexane, 1 ,5-pentanediol, 1,1,1,2,2,3,3-heptafluoroundecane, 2,2,5,5-tetramethylhexane, 2,2,3,3-tetramethylpentane, 2,2,4-trimethylpentane, 2 ,2,4,4-tetramethylpentane, dodecamethylcycloh exasiloxane, acetaldehydeammonia, 1,1,1,2,2,3,3,4,4-nonafluorohexadecane, dodecamethylpentasiloxane, 1,1,1,2,2,3,3-heptafluorononane, 1,3-dioxolan-2- one, decamethyltetrasiloxane, 1-(perfluorohexyl)docosane, hexamethyldisilane, 1,1,1,2,2,3,3,4,4,5,5-undecafluorononadecane, tetradecamethylhexasiloxane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6-tridecafluorohexacosane, 1,1,1,2,2,3,3,4,4-nonafluorooundecane, 1,1,1,2,2,3,3 ,4,4-nonafluorododecane, hexadecamethylheptasiloxane, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorotetracosane, propynol, 1,1,1,2,2,3 ,3,4,4-nonafluorodecane, ethanolamine, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorodocosane, 2-hydroxypropanenitrile, 1,1,1,2 ,2,3,3,4,4,5,5,6,6-tridecafluoroicosane, 1,1,1,2,2,3,3,4,4-nonafluorononane, 1,1,1,2,2 ,3,3,4,4,5,5,6,6-tridecafluorooctadecane, cis-2-butene-1,4-diol, 1,1,1,2,2,3,3,4,4,5 -decafluorononane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorooctacosane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6-tridecafluorohexadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8 -heptadecafluor ohexacosane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoropentacosane, 1,1,1,2,2,3, 3,4,4,5,5,6,6-tridecafluoropentadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8- heptadecafluorotetracosane, 1-(perfluorohexyl)octane, 1,1,1,2,2,3,3,4,4,5,5-undecafluorodecane, 1,1,1,2,2,3,3,4,4 ,5,5,6,6-tridecafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorodocosane, 1h,8h -hexadecafluorooctane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotriacontane, hexacosamethyldodecasiloxane, 1 ,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoroicosane, 1,1,1,2,2,3,3,4 ,4,5,5,6,6-tridecafluorododecane, 1,3-propanediol, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooundecane, 1,1 ,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorononadecane, 1,1,1,2,2,3,3,4,4 ,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorononacosane, 1,1,1,2,2,3,3,4,4,5,5,6 ,6,7,7,8,8-heptadecafluorooctadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-pentadecafluorotetradecane, 1,1,1 ,2,2,3,3,4,4,5,5,6-dodecafluorononane, 1,1,1,2,2,3,3,4,4,5,5-undecafluoroocta ne, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-pentadecafluorotridecane, 1-perfluorooctyloctane, 1,1,1,2,2,3, 3,4,4,5,5,6,6-tridecafluorodecane, 1,1,1,2,2,3,3,4,4,13,13,14,14,15,15,16,16, 16-octadecafluorohexadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoropentadecane, 1,1,1,2,2, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorohentriacontane, acetamidomethanol, 1,1,1, 2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorotetradecane, 1-(henicosafluorodecyl)undecane, 1,1,1,2,2,3,3 ,4,4,5,5,6,6,7,7,8,8-heptadecafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7 ,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorooctacosane, ethylenecyanohydrin, 1,1,1,2,2,3,3,4,4,5,5,6 ,6,7,7,8,8,9,9,10,10-henicosafluoroicosane, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooctane, perfluorooctylbromide , 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorooctadecane, 1,1,1 ,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorododecane, 1,1,1,2,2,3,3,4,4,5 ,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorotetracosane, pentacosafluorotricos ane, 1-(perfluorohexyl)propane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10 -henicosafluoropentadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluorodecane, 1,1,1,2,2,3 ,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotetradecane, 1,1,1,2,2,3,3,4,4 ,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorooctadecane, 1,1,1,2,2,3,3,4 ,4,5,5,6,6,7,7,8,8,9,9,10,10-henicosafluorotridecane, 1,1,1,2,2,3,3,4,4,5,5 ,6,6,7,7,8,8,9,9,10,10-henicosafluorododecane, glycol, tetratriacontafluorotetracosane, glycerol, 1,1,1,2,2,3,3,4,4,5,5 ,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluorotetradecane, methylhydroperoxide, H ₂ O, 4-hydroxymethyl-1,3-dioxolan-2-one , hydroxyacetonitrile, perfluorooctane, perfluorodecalin, methanesulfonicacid, formamide, 4-methylphenol, PBr ₃ , H ₂ O ₂ , BBr ₃ , methylbutane, 2,2-dimethylbutane, 2,2,3-trimethyl-butane, 2,2-dimethylpentane, 2,3-dimethylbutane, pentane, 2,4-dimethylpentane, 2-methylpentane, 2-methylhexane, 3-methylpentane, 3-methylhexane, 3-ethylpentane, 3-ethyl-3 -methylpentane, 2-methylheptane, 3,3-diethylpentane, 3-methylheptane, 2-methyloctane, 4-methylheptane, 3-ethylheptane, 2-methyl-nonane, 3-methyloctane, 4-methyloctane, 2-methyldecane, 3-methyl -nonane, 1,1,3,3-tetramethylcyclopentane, 1,3-butanediol, 4-methyldecane, 5-methyl-nonane, 4-methyl-nonane, 1,1-dimethylcyclopentane, 1,1,2-trimethylcyclopentane, 1 ,1,2-trimethylcyclohexane, n-decane, n-nonane, isobutylcyclopentane, isopropylcyclopentane, tert-butylcyclohexane, pentadecane, tridecane, 1,1,3-trimethylcyclopentane, 1,1,3-trimethylcyclohexane, nonadecane, heptadecane, octadecane, ethylcyclopentane , dodecane, n-undecane, propylcyclopentane, isobutylcyclohexane, isopropylcyclohexane, 1-ethyl-1-methylcyclopentane, 2,3,3-trimethyl-1-butene, 2,4,4-trimethyl-1-pentene, n-hexylcyclopentane, pentylcyclopentane , 1-isopropyl-4-methylcyclohexane, trimethylaluminum, n-tetradecylcyclopentane, tridecylcyclopentane, tetradecane, n-dodecylcyclopentane, n-decylcyclopentane, n-propylcyclohexane, ethyl Cyclohexane, 3,3-dimethyl-1-butene, n-hexadecane, pentene, 2,3,3-trimethyl-1-pentene, decylcyclohexane, pentylcyclohexane, 3,4-dicyclohexyl-2,5-dimethylhexane, 2-methyl- 1-butene, 3,3-dimethyl-1-pentene, 4,4-dimethyl-1-pentene, butylcyclohexane, methylcyclopentane, methylcyclohexane, decahydronaphthalene, hexahydroindene, bicyclohexyl, cyclohexane, 2,4,4-trimethyl-2-pentene, 2,3-dimethyl-1-pentene, tricyclohexylmethane, butylcyclopentane, 1-hexene, 2,3-dimethyl-1-butene, methylformamide, 3,3-dimethyl-1-butyne, triethyleneglycol, 3-methoxy-1,2- propanediol, 2,4-dimethyl-1-pentene, 1-heptene, 3-methyl-1-pentene, 3-ethyl-2-methyl-1-pentene, 1,4-di-tert-butylbenzene, diethyleneglycol, octane, methoxyaceticacid, 1-nonene, 4-methyl-1-hexene, 1,1,3,4,4,6-hexamethyltetralin, 1,3,5-triisopropylbenzene, 1,2,2,6,6-pentamethylpiperidine, 1, 4-diethylbenzene, 2-methyl-2-butene, isoprene, 4-methyl-1-pentene, 1-tetradecene, 3-ethyl-1-pentene, 2-methyl-3-heptene, 1-decene, 2,3, 4-trimethyl-2-pentene, 1-no nadecene, butylbenzene, 2-ethoxy-2-methyl-propane, 1,2-diethylbenzene, ethanedial, cyclohexylbenzene, galaxolide, 1,2,3,4-tetramethylbenzene, 1,2,3,5-tetramethylbenzene, pentaethylbenzene, 1, 3,5-trimethylbenzene, isobutanol, peroxyaceticacid, 1,6-hexanediol, 2,6-di-tert-butyl-4-methylpyridine, 2,2'-(methylimino)bis-ethanol, 1,3-bis(1- methylethyl)-benzene, 2,7-diisopropylnaphthalene, 1,2,3,5-tetraethylbenzene, tetrahydro-2,2,5,5-tetramethylfuran, 1,5-diisopropylnaphthalene, 2,3-butanediol, 1,2-diisopropylbenzene , 1-(2-pentyl)-4-(3-pentyl)benzene, tetradecylbenzene, pentadecylbenzene, ethylbenzene, 3,6-bis-(methoxymethyl)-durene, 5-hydroxy-6-methoxy-8-[(4- amino-1-methylbutyl)amino]quinoline trihydrobromide, 1-(1,1-dimethylethyl)-3-methylbenzene, tridecylbenzene, 1-(methoxymethyl)-4-(2,4,4-trimethylpentan-2-yl)benzene, dodecylbenzene, 1,2,4-trimethylbenzene, 1-cyclohexyl-2-isopropylbenzene, 4,6,6-Trimethylbicyklo(3,1,1)hept-3-ene, 2,6-di-tert-butylpyridine, 1, 1'-oxybis-octane, 1,5-hexaned iol, 1-(1,1-dimethylethyl)-3,5-dimethylbenzene, menthylisovalerate, 1-methyl-7-(1-methylpropyl)naphthalene, tert-butanol, beta-himachalen, dimethoxymethane, 1,2,3,4 ,5,6,7,8-octahydroanthracene, tert-butylbenzene, 1,2-hexanediol, cyclohexene, 6,10,14-trimethylpentadecan-2-one, delta-cadinene, isopropylbenzene, undecylbenzene, 2,5-hexanediol, dipropyleneglycol , 1,6-dimethyl-4-isopropyltetralin, di-n-propylether, diisopropylether, cuparene, 1,4-bis(1-methylethyl)-benzene, 2,4-dimethyl-3-thiapentane, 1-methoxy-4- A waste polyvinyl chloride recycling composition selected from (2,4,4-trimethylpentan-2-yl)benzene, 1-ethoxybutane, decylbenzene and cycloheptane. Recycled polyvinyl chloride obtained by filtering the composition of any one of claims 3 to 11. Selecting a good solvent and non-solvent for polyvinyl chloride extraction using the solvent screening method according to claim 1 or 2;
contacting the waste containing the polyvinyl chloride with the good solvent and dissolving the polyvinyl chloride in the waste with the good solvent to obtain a polyvinyl chloride solution; and
A method for recycling waste containing polyvinyl chloride, comprising the step of precipitating polyvinyl chloride from the dissolving solution by contacting the dissolving solution with the non-solvent. The method according to claim 13, before the step of precipitating the polyvinyl chloride, further comprising a separation step of separating the solid content from the polyvinyl chloride solution, the method of recycling waste containing polyvinyl chloride.