KR20220095115A - Plasticizer composition - Google Patents

Abstract

The present invention relates to a plasticizer composition, which can reduce the emission of carbon by containing renewable raw materials, is eco-friendly, and has excellent gelling properties, plasticization efficiency, and weather resistance. The plasticizer composition contains a regenerated phthalate-based compound as a first plasticizer, and a pure cyclohexane dicarboxylate-based compound and/or a regenerated cyclohexane dicarboxylate-based compound as a second plasticizer.

Description

plasticizer composition

The present invention relates to a plasticizer composition comprising a recycled raw material.

Recently, for environmental protection and resource recycling, research has been conducted to recover useful resources from waste synthetic resins or by-products generated during the synthetic resin manufacturing process. In addition, research to reduce carbon emissions generated during the production of synthetic resin products is being actively conducted.

As a recycling technology of waste synthetic resin, in particular, a method of recycling waste polyester is widely known. For example, a method of depolymerizing waste polyester in the presence of a catalyst to regenerate it with terephthalic acid, dimethyl terephthalate, and ethylene glycol as raw materials is known. The regenerated terephthalic acid and dimethyl terephthalate may be regenerated into dioctyl terephthalate, which is a useful material as a plasticizer, through esterification or transesterification. In addition, Chinese Laid-Open Patent Publication Nos. 104230714 and 104496819 disclose a method for recovering dioctyl terephthalate from wastewater of a polyester weight loss process.

Dioctyl terephthalate is a widely used plasticizer, and dioctyl terephthalate recovered through the regeneration process may also be used as a plasticizer for a polymer resin. However, the regenerated dioctyl terephthalate has disadvantages such as a yellow color and a bad smell compared to pure dioctyl terephthalate due to impurities incorporated in the recycling process. Accordingly, there was a problem that the regenerated dioctyl terephthalate can be utilized only in the manufacture of relatively low-quality products.

Accordingly, in the plasticizer composition containing a phthalate-based compound such as dioctyl terephthalate, it is required to develop a plasticizer composition that exhibits excellent quality while being able to obtain the effect of reducing carbon emission in resource recycling and manufacturing processes.

Chinese Laid-Open Patent Publication No. 104230714 Chinese Laid-Open Patent Publication No. 104496819

An object of the present invention is to provide a plasticizer composition that includes a recycled phthalate-based compound obtained from waste polyester or wastewater generated in a polyester production process and exhibits excellent physical properties.

According to one embodiment of the present invention,

a) as a first plasticizer, a regenerated phthalate-based compound; and

b) as a second plasticizer, a pure cyclohexane dicarboxylate-based compound and/or a regenerated cyclohexane dicarboxylate-based compound; A plasticizer composition comprising:

There is provided a plasticizer composition comprising less than 95 parts by weight of the first plasticizer in 100 parts by weight of the plasticizer composition.

In this case, 100 parts by weight of the plasticizer may include 20 to 85 parts by weight of the first plasticizer and 5 to 70 parts by weight of the second plasticizer.

The first plasticizer is regenerated dibutyl phthalate, regenerated dihexyl phthalate, regenerated dioctyl phthalate, regenerated di-n-octyl phthalate, regenerated diisononyl phthalate, regenerated diisodecyl phthalate, regenerated dibutyl isophthalate, regenerated dioctyl iso One selected from the group consisting of phthalate, regenerated diisononyl isophthalate, regenerated diisodecyl isophthalate, regenerated dibutyl terephthalate, regenerated dioctyl terephthalate, regenerated diisononyl terephthalate, and regenerated diisodecyl terephthalate may be more than

The first plasticizer may have an acid value in the range of 0.05 KOH mg/g to 0.25 KOH mg/g.

The cyclohexane dicarboxylate-based compound is di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate, diisononylcyclohexane-1,2-dicarboxylate, di(2-ethylhexyl) ) from the group consisting of cyclohexane-1,2-dicarboxylate, butyl (2-ethylhexyl) cyclohexane-1,4-dicarboxylate, and dibutylcyclohexane-1,4-dicarboxylate It may be one or more selected.

In one example, the first plasticizer is recycled dioctyl terephthalate, and the second plasticizer is pure di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate and/or recycled di(2-ethylhexyl). cyclohexane-1,4-dicarboxylate.

The plasticizer composition may include a phthalate-based compound; polyol ester compounds; trimellitate-based compounds; aliphatic ester compounds; phosphate-based compounds; vegetable oil; epoxidized oil; And it may further include one or more compounds selected from the group consisting of acylated monoglyceride compounds.

The plasticizer composition may have a carbon emission reduction rate of 5% or more.

The plasticizer composition may have an acid value of 0.25 KOH mg/g or less, and a yellow index (YI, yellowness) measured according to ASTM E313 standard of 120 or less.

According to another embodiment of the present invention, the plasticizer composition; and at least one selected from the group consisting of polyvinyl chloride, polystyrene, polyurethane, polyethylene, polypropylene, silicone, modified silicone, ethylene vinyl acetate resin, polyketone, polyvinyl butyral, acrylic, synthetic rubber resin, and thermoplastic elastomer. A resin composition comprising a resin is provided.

The resin composition may include 1 to 200 parts by weight of the plasticizer composition based on 100 parts by weight of the resin.

The resin composition may have a yellow index (YI, yellowness) of 10 to 25 as measured by ASTM E313 standard, and/or a yellow index (YI, yellowness) measured after UV aging for 300 hours by the ASTM G154 method 10 to 65.

According to another embodiment of the present invention, there is provided a molded article including the resin composition.

The plasticizer composition according to the present invention can be used as a general-purpose plasticizer because it contains a regenerated phthalate-based compound and has less yellow color and less odor unique to regenerated raw materials, and excellent gelling properties, plasticization efficiency and weather resistance.

The terminology used herein is used to describe exemplary embodiments only, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

Since the present invention may have various changes and may have various forms, specific embodiments will be illustrated and described in detail below. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Hereinafter, the plasticizer composition of the present invention, a resin composition including the same, and a molded article will be described in more detail.

plasticizer composition

first plasticizer

The plasticizer composition of the present invention includes a regenerated phthalate-based compound as the first plasticizer.

In the present invention, the regenerated phthalate-based compound refers to a phthalate-based compound that is not synthesized from pure raw materials, but is recovered through reprocessing from waste.

In this case, the phthalate-based compound refers to a compound represented by the following Chemical Formula 1:

[Formula 1]

In Formula 1,

R ₁ and R ₂ are each independently a linear or branched alkyl group having 4 to 12 carbon atoms.

Preferably, R ₁ and R ₂ may each independently be n-butyl, n-hexyl, n-octyl, 2-ethylhexyl, isononyl, or isodecyl.

The phthalate-based compound of Chemical Formula 1 may be represented by the following Chemical Formulas 1-1 to 1-3 depending on the position of the substituent.

[Formula 1-1]

[Formula 1-2]

[Formula 1-3]

In Formulas 1-1 to 1-3, R- ₁ and R ₂ are as defined in Formula 1.

Formula 1-1 is a phthalate compound, Formula 1-2 is an isophthalate compound, and Formula 1-3 is a terephthalate compound.

Specific examples of the phthalate compound represented by Formula 1-1 include dibutyl phthalate (DBP), dihexyl phthalate (DHP), dioctyl phthalate (DOP), or di(2-ethylhexyl). phthalate), di-n-octyl phthalate (DnOP), diisononyl phthalate, or diisodecyl phthalate (DIDP).

Specific examples of the isophthalate compound represented by Formula 1-2 include dibutyl isophthalalate (DBIP), dioctyl isophthalate (DOIP; di(2-ethylhexyl)isophthalate), and diisononyl isophthalate. and phthalate (DINIP; diisononyl isophthalate) or diisodecyl isophthalate (DIDIP; diisodecyl isophthalate).

Specific examples of the terephthalate compound represented by Formula 1-3 include dibutyl terephthalate (DBTP), dioctyl terephthalate (DOTP; di(2-ethylhexyl)terephthalate), and diisononyl terephthalate. and phthalate (DINTP; diisononyl terephthalate) or diisodecyl terephthalate (DIDTP; diisodecyl terephthalate).

The regenerated phthalate-based compound of the present invention may be the above-described phthalate compound, isophthalate compound, and a terephthalate compound alone or mixed. In one embodiment, the regenerated phthalate-based compound includes regenerated dibutyl phthalate, regenerated dihexyl phthalate, regenerated dioctyl phthalate, regenerated di-n-octyl phthalate, regenerated diisononyl phthalate, regenerated diisodecyl phthalate, regenerated dibutyl to isophthalate, regenerated dioctyl isophthalate, regenerated diisononyl isophthalate, regenerated diisodecyl isophthalate, regenerated dibutyl terephthalate, regenerated dioctyl terephthalate, regenerated diisononyl terephthalate, and regenerated diisodecyl terephthalate At least one selected from the group consisting of may be used. Preferably, as the regenerated phthalate-based compound, regenerated dioctyl terephthalate may be used.

The regenerated phthalate-based compound used in the present invention may be obtained from a waste product using a commercially available product or by using a known method.

For example, the regenerated phthalate-based compound may be obtained by depolymerizing waste polyester to obtain an aromatic dicarboxylic acid or an ester thereof, and reacting it with an appropriate alcohol.

Alternatively, phthalic acid is extracted from wastewater discharged during alkali reduction processing of polyester fibers, wastewater generated in the process of producing pure terephthalate-based compounds, and waste materials such as residues after filtration, and reacted with alcohol to regenerate phthalate compound can be obtained.

In the present invention, the regenerated phthalate-based compound is included in less than 95 parts by weight of 100 parts by weight of the total plasticizer composition.

Regenerated phthalate-based compounds have a yellow color including impurities that are mixed in during the process of being recycled from waste and have a foul odor like oil. In addition, the regenerated phthalate-based compound often has a high acid value. Due to these problems, the regenerated phthalate-based compound is difficult to utilize when manufacturing high-quality products in which color and smell are important.

Accordingly, in the present invention, the content of the regenerated phthalate-based compound in 100 parts by weight of the plasticizer composition is controlled to less than 95 parts by weight, and pure or regenerated cyclohexane dicarboxylate-based compound is included as a second plasticizer together with the regenerated phthalate-based compound. , solved the color problem and odor problem derived from the regenerated phthalate-based compound.

Preferably, the regenerated phthalate compound is 85 parts by weight or less, or 70 parts by weight or less, and 20 parts by weight or more, 30 parts by weight or more, 40 parts by weight or more, or 50 parts by weight or more in 100 parts by weight of the plasticizer composition. have.

On the other hand, as described above, the regenerated phthalate-based compound has a higher acid value than a pure plasticizer. Specifically, the acid value of the regenerated phthalate-based compound is 0.05 KOH mg/g or more, 0.1 KOH mg/g or more, or 0.15 KOH mg/g or more, and 0.25 KOH mg/g or less, 0.2 KOH mg/g or less, or 0.18 It may be less than or equal to KOH mg/g.

As such, the regenerated phthalate-based compound exhibits a high acid value compared to conventional plasticizers, has a yellow color, and has a somewhat unpleasant odor, Thermal stability and gelling rate are improved by about 5% compared to pure phthalate compounds. The plasticizer composition of the present invention mainly uses a regenerated phthalate-based compound instead of a pure phthalate-based compound, and includes pure or regenerated cyclohexane dicarboxylate-based compound as a second plasticizer. and odor problem, and the gelling speed can be further improved.

However, if the acid value of the regenerated phthalate compound is excessively high, exceeding 0.25 KOH mg/g, the color of the plasticizer composition may become too yellow or the smell may be severe, and there is a possibility that the plasticizer migration resistance may be inferior. it is preferable

At this time, the acid value is the weight (mg) of potassium hydroxide (KOH) required to neutralize the acid contained in 1 g of the sample, and can be obtained by titrating the sample solution with a 0.1N alcoholic KOH solution.

second plasticizer

The plasticizer composition of the present invention includes a cyclohexane dicarboxylate-based compound as a second plasticizer. As the cyclohexane dicarboxylate compound, a pure cyclohexane dicarboxylate compound prepared from pure raw materials, a recycled cyclohexane dicarboxylate compound recovered from waste through reprocessing, or a combination thereof may be used. can

The cyclohexane dicarboxylate-based compound may be used together with the regenerated phthalate-based compound to improve the plasticizing efficiency and gelling rate of the plasticizer composition. In addition, since both the pure cyclohexane dicarboxylate-based compound and the regenerated cyclohexane dicarboxylate-based compound have a lighter color and a better odor than the regenerated phthalate-based compound, they are used as a second plasticizer to reduce the color of the first plasticizer and Odor characteristics can be supplemented.

The cyclohexane dicarboxylate-based compound is represented by the following Chemical Formula 2:

[Formula 2]

In Formula 2,

R′ ₁ and R′ ₂ are each independently a linear or branched alkyl group having 4 to 12 carbon atoms.

Preferably, R' ₁ and R' ₂ are each independently a butyl group, an isobutyl group, a pentyl group, a hexyl group, a heptyl group, a 2-ethylhexyl group, an octyl group, a nonyl group, an isononyl group, 2-propyl a heptyl group, a decyl group, or an isodecyl group. Preferably, R' ₁ and R' ₂ are each independently a butyl group, a 2-ethylhexyl group, or an isononyl group.

The cyclohexane dicarboxylate-based compound represented by Chemical Formula 2 may be represented by the following Chemical Formulas 2-1 to 2-3 depending on the position of the substituent.

[Formula 2-1]

[Formula 2-2]

[Formula 2-3]

In Formulas 2-1 to 2-3, R′- ₁ and R′ ₂ are as defined in Formula 2.

Formula 2-1 is a cyclohexane-1,2-dicarboxylate-based compound, Formula 2-2 is a cyclohexane-1,3-dicarboxylate-based compound, and Formula 2-3 is cyclohexane -1,4-dicarboxylate-based compound.

In one embodiment, the cyclohexane dicarboxylate-based compound is di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate, diisononylcyclohexane-1,2-dicarboxylate, di (2-ethylhexyl)cyclohexane-1,2-dicarboxylate, butyl (2-ethylhexyl)cyclohexane-1,4-dicarboxylate, and dibutylcyclohexane-1,4-dicarboxylate It may be at least one selected from the group consisting of rate.

Preferably, the cyclohexane dicarboxylate-based compound is di (2-ethylhexyl) cyclohexane-1,4-dicarboxylate (di (2-ethylhexyl) cyclohexane-1 represented by the following Chemical Formula 2-4) ,4-dicarboxylate, DEHCH):

[Formula 2-4]

The DEHCH is transparent in color and has no odor, and can realize excellent work performance due to low viscosity at room temperature and low temperature, has a fast gelling rate, and has excellent plasticization efficiency and plasticizer migration resistance compared to other cyclohexane dicarboxylate-based compounds. do. Accordingly, when DEHCH is used, the physical properties of the plasticizer composition can be further improved.

The pure cyclohexane dicarboxylate-based compound may be prepared by using a commercially available material or by using a known synthesis method from a pure raw material.

When the pure cyclohexane dicarboxylate-based compound is used as the second plasticizer, the color and odor problems of the regenerated phthalate-based compound as the first plasticizer can be more effectively compensated. Therefore, a plasticizer composition using a pure cyclohexane dicarboxylate-based compound as the second plasticizer may be more suitably used for manufacturing high-quality products.

The regenerated cyclohexane dicarboxylate-based compound may be obtained from a waste material using a commercially available material or using a known method. For example, a regenerated phthalate-based compound as the first plasticizer may be obtained by the above-described method, and then hydrogenated to obtain a regenerated cyclohexane dicarboxylate-based compound. In this process, energy consumed for the production of pure phthalate-based compounds and the amount of greenhouse gas emitted are reduced. Therefore, when the recycled cyclohexane dicarboxylate-based compound is used as the second plasticizer, the carbon emission of the plasticizer composition can be significantly reduced. have. In addition, since some impurities are removed in the hydrogenation reaction and subsequent purification process, the regenerated cyclohexane dicarboxylate compound exhibits superior chromaticity and less odor compared to the regenerated phthalate compound, Accordingly, the characteristics of the first plasticizer may be supplemented.

The regenerated cyclohexane dicarboxylate compound exhibits a fast gelling rate and high plasticization efficiency like the pure cyclohexane dicarboxylate compound, but compared to pure cyclohexane dicarboxylate compound due to impurities. It has a relatively yellow color and has a higher acid value.

Specifically, the acid value of the regenerated cyclohexane dicarboxylate-based compound may be greater than 0.05 KOH mg/g and 0.3 KOH mg/g or less. The pure cyclohexane dicarboxylate-based compound has an acid value of 0.1 KOH mg/g or less, or 0.05 KOH mg/g or less, and the lower the acid value, the better, theoretically it may be 0 KOH mg/g.

The acid value is the weight (mg) of potassium hydroxide (KOH) required to neutralize the acid contained in 1 g of the sample, and can be obtained by titrating the sample solution with a 0.1N alcoholic KOH solution.

The second plasticizer is 5 parts by weight or more, 10 parts by weight or more, 15 parts by weight or more, or 30 parts by weight or more, and 70 parts by weight or less, 60 parts by weight or less, 50 parts by weight or less out of 100 parts by weight of the plasticizer composition. it is preferable

If the content of the second plasticizer is less than 5 parts by weight based on 100 parts by weight of the plasticizer composition, it may be insufficient to supplement the physical properties of the regenerated phthalate-based compound. In addition, when the amount of the second plasticizer exceeds 70 parts by weight based on 100 parts by weight of the plasticizer composition, the content of the regenerated phthalate-based compound is relatively small, so that physical properties as a plasticizer including the phthalate-based compound cannot be secured, and the regenerated phthalate-based compound cannot be secured. It is difficult to expect the effect of reducing carbon emission by using the compound.

In one embodiment of the present invention, the first plasticizer may be recycled dioctyl terephthalate, and the second plasticizer may be di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate. At this time, the di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate is pure di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate, recycled di(2-ethylhexyl)cyclo hexane-1,4-dicarboxylate, or a combination thereof.

Meanwhile, the plasticizer composition of the present invention may not further include other plasticizers in addition to the first and second plasticizers. Specifically, the plasticizer composition may include 20 to 85 parts by weight of the first plasticizer and 5 to 70 parts by weight of the second plasticizer. Alternatively, the plasticizer composition may include 50 to 70 parts by weight of the first plasticizer and 30 to 50 parts by weight of the second plasticizer.

Preferably, the plasticizer composition comprises 20 to 85 parts by weight of recycled dioctyl terephthalate as the first plasticizer and 5 to 70 parts by weight of di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate as the second plasticizer. It may be included in parts by weight. More preferably, the plasticizer composition comprises 50 to 70 parts by weight of regenerated dioctyl terephthalate as the first plasticizer and 30 to 70 parts by weight of di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate as the second plasticizer. It may contain 50 parts by weight. At this time, the di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate is pure di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate, recycled di(2-ethylhexyl)cyclo hexane-1,4-dicarboxylate, or a combination thereof.

additional plasticizer

The plasticizer composition of the present invention may further include an additional plasticizer in addition to the first and second plasticizers.

The additional plasticizer may be a material used as a plasticizer of a polymer resin without limitation, for example, a phthalate-based compound; polyol ester compounds; trimellitate-based compounds; aliphatic ester compounds; phosphate-based compounds; vegetable oil; epoxidized oil; and an acylated monoglyceride compound; may be at least one selected from the group consisting of.

The phthalate-based compound is a compound represented by Formula 1, specifically dibutylphthalate, dinormalhexylphthalate, diisoheptylphthalate, diheptylphthalate, di(2-ethylhexyl)phthalate, diheptylnonylphthalate, dinormal Octyldecylphthalate, diheptylnonylundecylphthalate, diisononylphthalate, dinonylphthalate, dinormalnonylphthalate, diisodecylphthalate, dinomalnonyldecylundecylphthalate, dinonylundecylphthalate, diundecylphthalate, dinonylphthalate It may be at least one selected from the group consisting of isoundecyldodecylphthalate, ditridecylphthalate, dibutylterephthalate, butyloctylterephthalate, di(2-ethylhexyl)terephthalate, and butylbenzylphthalate.

The polyol ester compound is a compound obtained by esterification of a polyol and a carboxylic acid.

The polyol is a polyol having 3 to 8 carbon atoms, for example, propane-1,3-diol, propylene glycol, glycerol, trimethylolethane, trimethylolpropane, sorbitan, sorbitol, isosorbide, erythritol, threitol, Pentaerythritol, arabitol, xylitol, ribitol, fuchitol, mannitol, galactitol, iditol, inositol, bolemitol, or glucose can be used.

Examples of the carboxylic acid include butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, araxic acid, behenic acid, linoseric acid, palmitoleic acid, oleic acid , or valeric acid, and the like, but is not limited thereto.

Specifically, as the polyol ester-based compound, pentaerythritol tetravalerate (Pevalen ^TM ) may be used.

Examples of the trimellitate-based compound include tri-(2-ethylhexyl) trimellitate, trimethyl trimellitate, trihexyl trimellitate, triheptyl trimellitate, tri-(n-octyl, n-decyl) and at least one selected from the group consisting of trimellitate and tri-(heptyl, nonyl) trimellitate.

The aliphatic ester-based compound may be an ester compound derived from an aliphatic carboxylic acid compound such as adipic acid, sebacic acid, azelaic acid, and maleic acid. Examples of the aliphatic ester compound include dimethyl adipate, monomethyl adipate, dioctyl adipate, diheptylnonyl adipate, di(2-ethylhexyl) adipate, diisononyl adipate, and diisodecyl adipate. , di(2-ethylhexyl)sebacate, dibutyl sebacate, di(2-ethylhexyl)azelate, dibutyl maleate, and at least one selected from the group consisting of diisobutyl maleate. .

The phosphate-based compound may be at least one selected from the group consisting of triethyl phosphate, tricresyl phosphate, tri-2-ethylhexyl phosphate, tritolyl phosphate, and trixylyl phosphate.

Examples of the vegetable oil include at least one selected from the group consisting of soybean oil, castor oil, linseed oil, palm oil, canola oil, and flax oil.

The epoxidized oil is an epoxidized fatty acid alkyl ester prepared by epoxidizing a fatty acid alkyl ester, for example, epoxidized soybean oil, epoxidized castor oil, or epoxidized linseed oil. linseed oil, epoxidized palm oil, epoxidized stearate, epoxidized oleate, epoxidized tall oil, and epoxidized linoleate At least one selected from the group consisting of may be used.

The acylated monoglyceride compound may be prepared by performing an acylation reaction on a monoglyceride prepared by reacting glycerol with a fatty acid, and in this case, the above-described aliphatic carboxylic acid, vegetable oil, etc. may be used as the fatty acid.

The additional plasticizer may be used alone or in combination of two or more.

When the additional plasticizer is included, the content of the additional plasticizer may be 1 part by weight or more, or 5 parts by weight or more, and 30 parts by weight or less, 20 parts by weight or less, or 10 parts by weight or less in 100 parts by weight of the plasticizer composition. If the content of the additional plasticizer is too high, the content of the first plasticizer and the second plasticizer is relatively reduced, so that the above-described carbon emission reduction effect, thermal stability and gelling rate improvement effect cannot be sufficiently obtained, so it is preferable to satisfy the above range.

The plasticizer composition of the present invention can reduce carbon emissions by using a regenerated phthalate-based compound, and includes a cyclohexane dicarboxylate-based compound along with the regenerated phthalate-based compound, so that even when a recycled raw material is used, the color and odor are excellent. is small, and the acid value is relatively low.

Specifically, the plasticizer composition may have an acid value of 0.25 KOH mg/g or less, 0.22 KOH mg/g or less, or 0.2 KOH mg/g or less. The lower the acid value, the better the quality. The lower limit is not limited and may theoretically be 0 KOH mg/g. In particular, the high acid value of the plasticizer composition means that there are many impurities in addition to the plasticizer. may deteriorate the performance of Accordingly, the plasticizer composition preferably maintains the acid value range as described above.

In addition, the plasticizer composition may have a yellowness (Yellow Index) of 120 or less, 100 or less, or 92 or less, measured according to ASTM standards D1209 and E313.

In addition, the plasticizer composition may have a carbon emission reduction rate of 5% or more, or 5% or more to 40% or less. The carbon emission reduction rate of the plasticizer composition is compared with a plasticizer composition comprising a pure phthalate compound and/or a pure cyclohexane dicarboxylate compound instead of the recycled phthalate compound and/or a recycled cyclohexane dicarboxylate compound This is a calculated value and corresponds to the carbon emission reduction rate due to the use of recycled raw materials instead of pure raw materials.

Specifically, the carbon emission reduction rate (%) of the plasticizer composition can be calculated as in Equation 1 below.

[Equation 1]

Carbon emission reduction rate (%) = 100-[(A1/A2)*100]

In Equation 1 above,

A1 represents the carbon emission (tCO ₂ eq/MT) of the plasticizer composition,

A2 shows the carbon emission (tCO ₂ eq/MT) of the plasticizer composition of the control group.

Specifically, in Equation 1, A1 corresponds to the total sum of carbon emissions (tCO ₂ eq/MT) according to the composition ratio of each component included in the plasticizer composition to be measured for the carbon emission reduction rate, and A2 is the plasticizer composition calculated from A1 Control using a pure raw material (pure phthalate compound and/or pure cyclohexane dicarboxylate compound) instead of a recycled raw material (regenerated phthalate compound and/or recycled cyclohexane dicarboxylate compound) with the same composition as It corresponds to the total of carbon emissions (tCO ₂ eq/MT) according to the composition ratio of each component of the plasticizer composition. Here, the unit of the carbon emission is expressed as a weight equivalent (eq) of the total CO ₂ emission per metric ton.

As an example, the carbon emission (A1) of the plasticizer composition containing R-DOTP and DEHCH in a ratio of 50:50 is the sum of the carbon emissions of each component according to this composition ratio, that is, the carbon emission of R-DOTP * 0.5 + carbon of DEHCH Calculated as emissions * 0.5, it is 0.568 tCO ₂ eq/MT. The plasticizer composition of the control group for the plasticizer composition is a plasticizer composition containing DOTP and DEHCH in a 50:50 ratio, and its carbon emission (A2) is 0.611 tCO ₂ calculated as carbon emission of DOTP * 0.5 + carbon emission of DEHCH * 0.5 eq/MT. Therefore, according to Equation 1, the carbon emission reduction rate of the plasticizer composition containing R-DOTP and DEHCH in a ratio of 50:50 is 7.04%. In the above, the carbon emission of each component used in the plasticizer composition was calculated as the following values:

- Regenerated dioctyl terephthalate (R-DOTP): 0.485 tCO ₂ eq/MT

- Pure dioctyl terephthalate (DOTP, or Pure-DOTP): 0.571 tCO ₂ eq/MT

- pure di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate (DEHCH, or Pure-DEHCH): 0.651 tCO ₂ eq/MT

The carbon emission amount of each component used in the plasticizer composition may be calculated by referring to the value provided by the manufacturer, or calculating based on the manufacturing process and chemical reaction of each component. For a specific method of calculating the carbon emission reduction rate, reference may be made to an experimental example to be described later.

Preferably, the carbon emission reduction rate of the plasticizer composition may be 5% or more, 5.5% or more, 6% or more, 6.5% or more, or 7% or more, and 40% or less, 30% or less, or 20% or less.

The above-described plasticizer composition has excellent physical properties such as gelling properties, plasticization efficiency, and weather resistance when used in addition to the resin. Therefore, the plasticizer composition of the present invention can be applied as a plasticizer to various polymer resins.

resin composition

Accordingly, according to another embodiment of the present invention, the plasticizer composition; and at least one selected from the group consisting of polyvinyl chloride, polystyrene, polyurethane, polyethylene, polypropylene, silicone, modified silicone, ethylene vinyl acetate resin, polyketone, polyvinyl butyral, acrylic, synthetic rubber resin, and thermoplastic elastomer. Suzy; There is provided a resin composition comprising a.

The content of the resin and plasticizer in the resin composition is not limited, and may be appropriately adjusted depending on the resin used and the desired physical properties, but for example, the resin composition may contain 1 to 200 parts by weight of the plasticizer composition described above with respect to 100 parts by weight of the resin. parts, or 30 to 200 parts by weight, or 50 to 150 parts by weight.

The resin composition may further include any one or more selected from the group consisting of additives, for example, stabilizers, fillers and pigments. The additive may be appropriately selected according to the physical properties to be improved in the resin composition.

The stabilizer is added for the purpose of preventing a change in the physical properties of the resin, Ca-Zn-based compound, K-Zn-based compound, Ba-Zn-based compound, organic tin-based compound; It includes any one or more selected from the group consisting of a metallic soap-based compound, a phenol-based compound, a phosphoric acid ester-based compound, or a phosphorous acid ester-based compound.

More specific examples of the stabilizer that can be used in the present invention include Ca—Zn-based compounds; K-Zn-based compounds; Ba-Zn-based compounds; an organic tin-based compound such as a mercaptide-based compound, a maleic acid-based compound, or a carboxylic acid-based compound; metallic soap-based compounds such as Mg-stearate, Ca-stearate, Pb-stearate, Cd-stearate, or Ba-stearate; phenolic compounds; phosphoric acid ester compounds; or a phosphorous acid ester-based compound, but is not limited thereto.

The filler is used for the purpose of improving the productivity of the resin composition, dry touch, flame retardant properties, etc., calcium carbonate, talc, titanium dioxide, kaolin, silica, alumina, magnesium hydroxide, aluminum hydroxide, phosphorus-based compound, melamine-based compound, phosphorus-melamine complex compound, boron-based flame retardant treatment agent, carbon black, carbon nanotube, nano-clay, or any one or more selected from the group consisting of clay.

The pigment may be titanium dioxide, carbon black, cadmium-based pigment, or the like.

The resin composition according to the present invention may be prepared by a method generally known in the art using a resin, a plasticizer composition, and optionally an additive, and the method is not particularly limited.

In one embodiment, the resin composition may be a vinyl chloride resin composition including a vinyl chloride resin. The vinyl chloride resin composition, including the plasticizer composition according to the present invention, may exhibit excellent color, gelling properties and weather resistance.

The vinyl chloride resin may be a homopolymer in which a vinyl chloride monomer is homopolymerized, or a copolymer in which a vinyl chloride monomer and a comonomer copolymerizable therewith are polymerized. can be used for

The comonomer copolymerizable with the vinyl chloride monomer is specifically, vinyl esters such as vinyl acetate, vinyl propionate, vinyl stearate; vinyl ethers having an alkyl group such as methyl vinyl ether, ethyl vinyl ether, octyl vinyl ether, and launyl vinyl ether; Halogenated vinylidene, such as a vinylidene chloride; unsaturated carboxylic acids such as acrylic acid, methacrylic acid, fumaric acid, maleic acid, itaconic acid, maleic anhydride, and itaconic anhydride, and acid anhydrides thereof; unsaturated carboxylic acid esters such as methyl acrylate, ethyl acrylate, monomethyl maleate, dimethyl maleate, and butyl benzyl maleate; aromatic vinyl compounds such as styrene, α-methyl styrene and divinyl benzene; unsaturated nitriles such as acrylonitrile or methacrylonitrile; olefins such as ethylene or propylene; or crosslinkable monomers such as diallyl phthalate, and the like, and any one or a mixture of two or more thereof may be used. Among them, the comonomer may more preferably include vinyl acetate, etc. in terms of excellent compatibility with the vinyl chloride monomer and improving compatibility with the plasticizer constituting the resin composition after polymerization. .

As described above, the vinyl chloride resin may be prepared by polymerization of a vinyl chloride monomer alone, or a vinyl chloride monomer and a comonomer copolymerizable therewith. At this time, the polymerization method is not particularly limited, and may be carried out according to a conventional polymerization method known in the art, such as suspension polymerization, bulk polymerization, emulsion polymerization, or seed emulsion polymerization.

The average particle size and uniformity of the vinyl chloride resin can be controlled by controlling the conditions during polymerization. Specifically, the straight vinyl chloride resin produced by suspension polymerization or bulk polymerization may have an average particle size (D ₅₀ ) in the range of 50 to 400 μm, and the paste vinyl chloride resin produced by emulsion polymerization or fine suspension polymerization is average The particle size (D ₅₀ ) may be less than 100 μm, preferably 0.1 to 40 μm. The average particle size (D ₅₀ ) of the vinyl chloride resin may be measured according to a conventional particle size distribution measuring method such as an optical microscope observation method or a light scattering measurement method.

An apparent density (Bulk Density) of the vinyl chloride resin measured according to ASTM D 1895 may be in the range of 0.30 to 0.70 g/cm ³ , or 0.40 to 0.60 g/cm ³ . The plasticizing effect and mechanical properties may be more excellent in the apparent density range.

The degree of polymerization and the weight average molecular weight of the vinyl chloride resin may affect the components constituting the vinyl chloride resin composition, particularly compatibility with a plasticizer and processability of the vinyl chloride resin composition. can be adjusted.

Specifically, the vinyl chloride resin may have a polymerization degree of 500 to 3,000, or a weight average molecular weight (Mw) of 25,000 to 300,000 g/mol. When the polymerization degree and the weight average molecular weight are within the above ranges, the dispersibility is excellent, the compatibility with the plasticizer is good, and the processability of the vinyl chloride resin composition can be improved.

If the degree of polymerization of the vinyl chloride resin is less than 500 or the weight average molecular weight is less than 25,000 g/mol, there is a risk of deterioration in processability and durability of the product after processing due to insufficient physical properties. If the molecular weight is too high, molding or processing may be difficult. More specifically, the vinyl chloride resin may have a polymerization degree of 700 or more and less than 1,700 or a weight average molecular weight (Mw) of 45,000 to 250,000 g/mol.

The weight average molecular weight (Mw) of the vinyl chloride resin is a standard polystyrene conversion value by gel permeation chromatography. In addition, the polymerization degree of the vinyl chloride resin can be measured according to JIS K 6720-2.

In one embodiment, the vinyl chloride resin may be a straight vinyl chloride resin.

Also, in one embodiment, PVC scrap may be used as the vinyl chloride resin. PVC scrap is manufactured in powder form through processing such as pulverization of waste PVC products such as flooring, tarpaulin, and calendar, and can further reduce carbon emissions compared to using pure PVC. The PVC scrap can be used by using a commercially available product, or by manufacturing through pulverization processing from waste PVC. In this case, the PVC scrap that does not contain heavy metals and toxic substances is suitable for the production of eco-friendly products, and specifically, PVC scrap obtained by pulverizing a waste chassis or decoration tile may be preferably used. For example, the PVC scrap may have a content of four heavy metals (Pb, Cd, Hg, hexavalent Cr) of 90 mg/kg or less, 50 mg/kg or less, or 25 mg/kg or less, preferably 0 mg/kg or less can be kg.

The resin composition may have a yellow index (YI, yellowness) of 10 to 25, or 22 or less, or 20 or less, and 15 or more, or 18 or more, as measured by ASTM E313 standard.

In addition, the resin composition may have a yellow index (YI, yellowness) of 10 to 65 measured after UV aging for 300 hours by the ASTM G154 method, preferably 64 or less, 63 or less, or 62.5 or less, and 20 or more, It may be 30 or more, or 40 or more.

In addition, the resin composition may have a carbon emission reduction rate of 1.5% or more, or 1.5% or more to 60% or less. The carbon emission reduction rate of the resin composition is a plasticizer composition containing a pure phthalate compound and/or a pure cyclohexane dicarboxylate compound instead of the recycled phthalate compound and/or the recycled cyclohexane dicarboxylate compound. Chloride It is a calculated value when compared with the vinyl resin composition, and corresponds to the carbon emission reduction rate due to the use of a recycled raw material instead of a pure raw material.

Specifically, the carbon emission reduction rate (%) of the resin composition can be calculated as in Equation 2 below.

[Equation 2]

Carbon emission reduction rate (%) = 100-[(A3/A4)*100]

In Equation 2 above,

A3 represents the carbon emission (tCO ₂ eq/MT) of the resin composition,

A4 shows the carbon emission (tCO ₂ eq/MT) of the resin composition of the control group.

Specifically, in Equation 2, A3 corresponds to the sum of carbon emissions (tCO ₂ eq/MT) according to the composition ratio of each component included in the resin composition to be measured for the carbon emission reduction rate, and A4 is the resin composition calculated from A3 Resin with the same composition as in the above, but using pure raw materials (pure phthalate compounds and/or pure cyclohexane dicarboxylate compounds) instead of recycled raw materials (regenerated phthalate-based compounds and/or recycled cyclohexane dicarboxylate-based compounds) It corresponds to the total of carbon emissions (tCO ₂ eq/MT) according to the composition ratio of each component of the composition. Here, the unit of the carbon emission is expressed as a weight equivalent (eq) of the total CO ₂ emission per metric ton.

In one example, the resin composition is polyvinyl chloride (PVC, Hanwha Solution P-1000) 100 parts by weight, R-DOTP and DEHCH 50:50 plasticizer 30 parts by weight, and a heat stabilizer 2 parts by weight of a vinyl chloride resin In the case of the composition, each component PVC, R-DOTP, DEHCH, and Ba/Zn-based heat stabilizer included in the vinyl chloride resin composition has a weight ratio of 0.758, 0.114, 0.114, and 0.015, respectively. At this time, when carbon emissions of heat stabilizers with insignificant content in the composition are excluded and only carbon emissions of PVC, R-DOTP, and DEHCH are considered, the carbon emission (A3) of the resin composition is each component PVC, R- Based on the weight ratios of DOTP and DEHCH of 0.758, 0.114, and 0.114, the sum of the carbon emissions of each component according to these composition ratios (i.e., the carbon emission of PVC * 0.758 + the carbon emission of R-DOTP * 0.114 + the carbon emission of DEHCH * 0.114) is calculated to be 0.267 tCO ₂ eq/MT. The resin composition of the control for the vinyl chloride resin composition is a composition in which PVC, DOTP, and DEHCH are mixed in a weight ratio of 0.758, 0.114, and 0.114, respectively, and its carbon emission (A4, that is, carbon emission of PVC * 0.758 + DOTP) Carbon emission * 0.114 + carbon emission of DEHCH * 0.114) is 0.277 tCO ₂ eq/MT. Therefore, according to Equation 2, the carbon emission reduction rate of the vinyl chloride resin composition of the example is 3.53%. In the above, the carbon emission of each component used in the resin composition was calculated as the following value:

- Polyvinyl chloride (PVC, Hanwha Solutions P-1000): 0.182 tCO ₂ eq/MT

- Regenerated dioctyl terephthalate (R-DOTP): 0.485 tCO ₂ eq/MT

- Pure dioctyl terephthalate (DOTP, or Pure-DOTP): 0.571 tCO ₂ eq/MT

- pure di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate (DEHCH, or Pure-DEHCH): 0.651 tCO ₂ eq/MT

The carbon emission amount of each component used in the resin composition may be calculated by referring to the value provided by the manufacturer, or calculating based on the manufacturing process and chemical reaction of each component. For a specific method of calculating the carbon emission reduction rate, reference may be made to an experimental example to be described later.

The carbon emission reduction rate may vary depending on the composition of the plasticizer composition and the type of resin used. For example, the carbon emission reduction rate of the resin composition may be 1.8% or more, or 2% or more, or 3% or more, or 3.5% or more, or 4.2% or more, or 5% or more. If a resin prepared from a pure raw material is used, the carbon emission reduction rate of the resin composition is 28% or less, or 25% or less, or 22% or less, or 20% or less, or 18% or less, or 16% or less, or 11 % or less. If recycled resin such as PVC scrap is used, the carbon emission reduction rate may be 60% or less, or 55% or less.

The resin composition has excellent color and odor characteristics as described above, and has excellent thermal stability and a fast gelling rate.

On the other hand, according to another aspect of the present invention, there is provided a molded article including the resin composition.

The molded article is a food packaging film (eg, wrap), industrial film, compound, decor sheet, decor tile, soft sheet, hard sheet, wire and cable, wallpaper, foam mat, leather, flooring, tarpaulin, gloves, sealant, Gaskets such as refrigerators, hoses, medical devices, geogrids, mesh tarpaulins, toys, stationery, insulating tapes, clothing coatings, labels used for clothing or stationery, bottle cap liners, stoppers for industrial or other purposes, artificial baits, It may be used in the manufacture of electronic devices (eg, sleeves), automotive interior materials, adhesives, sealants, coatings, and the like, but is not limited thereto.

Hereinafter, the present invention will be described in more detail by way of Examples. However, the following examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.

[Example]

Example 1

China Runzenengyuan's recycled dioctyl terephthalate (R-DOTP, acid value 0.175 KOH mg/g) and di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate (DEHCH, Hanwha Solutions Eco-DEHCH) A plasticizer composition was prepared by mixing in a weight ratio of 50:50.

Based on 100 parts by weight of polyvinyl chloride (Hanwha Solution P-1000F, polymerization degree 1000±50, Bulk Density 0.55±0.04 g/cm ³ ), 30 parts by weight of the plasticizer composition and 2 parts by weight of a Ba/Zn-based heat stabilizer were added. Then, a vinyl chloride resin composition was prepared by kneading with a roll mill.

Example 2

A plasticizer composition was prepared by mixing recycled dioctyl terephthalate (R-DOTP) from Runzenengyuan of China and di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate (DEHCH) in a weight ratio of 60:40. .

Based on 100 parts by weight of polyvinyl chloride (Hanwha Solution P-1000F), 30 parts by weight of the plasticizer composition and 2 parts by weight of a Ba/Zn-based thermal stabilizer were added, and then kneaded with a roll mill to prepare a vinyl chloride resin composition.

Example 3

A plasticizer composition was prepared by mixing recycled dioctyl terephthalate (R-DOTP) from Runzenengyuan of China and di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate (DEHCH) in a weight ratio of 70:30.

Based on 100 parts by weight of polyvinyl chloride (Hanwha Solution P-1000F), 30 parts by weight of the plasticizer composition and 2 parts by weight of a Ba/Zn-based thermal stabilizer were added, and then kneaded with a roll mill to prepare a vinyl chloride resin composition.

Example 4

Regenerated dioctyl terephthalate (R-DOTP, acid value 0.175 KOH mg/g) from Runzenengyuan, China, and recycled di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate prepared by hydrogenating R-DOTP (R-DEHCH, acid value 0.250 KOH mg/g) was mixed in a weight ratio of 50:50 to prepare a plasticizer composition.

With respect to 100 parts by weight of polyvinyl chloride (Hanwha Solution P-1000F, polymerization degree 1000±50, Bulk Density 0.55±0.04 g/cm ³ ), 60 parts by weight of the plasticizer composition and 3 parts by weight of a Ba/Zn-based heat stabilizer were added. Then, a vinyl chloride resin composition was prepared by kneading with a roll mill.

Example 5

60 parts by weight of the plasticizer composition of Example 4 with respect to 100 parts by weight of recycled polyvinyl chloride (PVC scrap: processed PVC flooring, tarpaulin, and calendar products in powder form through processing such as pulverization), Ba / 3 parts by weight of a Zn-based thermal stabilizer was added, and then kneaded with a roll mill to prepare a vinyl chloride resin composition.

Example 6

A plasticizer composition was prepared in the same manner as in Example 4, except that the weight ratio of R-DOTP and R-DEHCH was 70:30. Thereafter, a vinyl chloride resin composition was prepared in the same manner as in Example 4 using the plasticizer composition.

Comparative Example 1

A vinyl chloride resin composition was prepared in the same manner as in Example 1, using recycled dioctyl terephthalate (R-DOTP) from Runzenengyuan of China as a plasticizer.

Comparative Example 2

A plasticizer composition was prepared by mixing recycled dioctyl terephthalate (R-DOTP) of Runzenengyuan of China and di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate (DEHCH) in a weight ratio of 95:5. .

Thereafter, a vinyl chloride resin composition was prepared in the same manner as in Example 1 using the plasticizer composition.

Comparative Example 3

A plasticizer composition and a vinyl chloride resin composition were prepared in the same manner as in Example 1, except that pure dioctyl terephthalate (DOTP, Hanwha Solutions SP-390) was used instead of recycled dioctyl terephthalate.

[Experimental example]

Each of the plasticizer compositions and vinyl chloride resin compositions of Examples and Comparative Examples was evaluated by the following method, and the results are shown in Table 1.

(1) Carbon emission reduction rate (%)

For the plasticizer compositions of Examples and Comparative Examples, the carbon emission reduction rate (%) was calculated according to Equation 1 below.

[Equation 1]

Carbon emission reduction rate (%) = 100-[(A1/A2)*100]

In Equation 1 above,

A1 represents the carbon emission (tCO ₂ eq/MT) of the plasticizer composition,

A2 shows the carbon emission (tCO ₂ eq/MT) of the plasticizer composition of the control group.

Specifically, in Equation 1, A1 corresponds to the total sum of carbon emissions (tCO ₂ eq/MT) according to the composition ratio of each component included in the plasticizer composition to be measured for the carbon emission reduction rate, and A2 is the plasticizer composition calculated from A1 Control using a pure raw material (pure phthalate compound and/or pure cyclohexane dicarboxylate compound) instead of a recycled raw material (regenerated phthalate compound and/or recycled cyclohexane dicarboxylate compound) with the same composition as It corresponds to the total of carbon emissions (tCO ₂ eq/MT) according to the composition ratio of each component of the plasticizer composition. Here, the unit of the carbon emission is expressed as a weight equivalent (eq) of the total CO ₂ emission per metric ton.

In addition, the carbon emission reduction rate (%) was calculated according to Equation 2 below for the vinyl chloride resin compositions of Examples and Comparative Examples.

[Equation 2]

Carbon emission reduction rate (%) = 100-[(A3/A4)*100]

In Equation 2 above,

A3 represents the carbon emission (tCO ₂ eq/MT) of the resin composition,

A4 shows the carbon emission (tCO ₂ eq/MT) of the resin composition of the control group.

Specifically, in Equation 2, A3 corresponds to the sum of carbon emissions (tCO ₂ eq/MT) according to the composition ratio of each component included in the resin composition to be measured for the carbon emission reduction rate, and A4 is the resin composition calculated from A3 Resin with the same composition as in the above, but using pure raw materials (pure phthalate compounds and/or pure cyclohexane dicarboxylate compounds) instead of recycled raw materials (regenerated phthalate-based compounds and/or recycled cyclohexane dicarboxylate-based compounds) It corresponds to the total of carbon emissions (tCO ₂ eq/MT) according to the composition ratio of each component of the composition. Here, the unit of the carbon emission is expressed as a weight equivalent (eq) of the total CO ₂ emission per metric ton.

As an example, the plasticizer composition of Example 1 contains R-DOTP and DEHCH in a ratio of 50:50, and the total carbon emission amount of each component according to this composition ratio (A1, that is, carbon emission of R-DOTP * 0.5 + DEHCH Carbon emission * 0.5) is 0.568 tCO ₂ eq/MT. A control for this is the plasticizer of Comparative Example 3, and its carbon emission (A2) is 0.611 tCO ₂ eq/MT. Therefore, according to Equation 1, the carbon emission reduction rate of the plasticizer composition of Example 1 is 7.04%. The plasticizer composition of Example 4 also uses the plasticizer composition of Comparative Example 3 as a control, and carbon emission and carbon emission reduction rates can be obtained in the same manner as above.

In addition, the vinyl chloride resin composition of Example 1 used 30 parts by weight of a plasticizer containing R-DOTP and DEHCH 50:50 in 100 parts by weight of polyvinyl chloride (PVC), and each component PVC contained in the vinyl chloride resin composition , R-DOTP, DEHCH, and Ba/Zn based heat stabilizers have weight ratios of 0.758, 0.114, 0.114, and 0.015, respectively. At this time, if carbon emissions of heat stabilizers with a relatively small content in the composition are excluded and only carbon emissions of PVC, R-DOTP, and DEHCH are considered, the total carbon emissions (A3) of each component according to the composition ratio is 0.267 tCO ₂ eq/ It is MT. Since the carbon emission amount (A4) of the vinyl chloride resin composition of Comparative Example 3 as a control for this is 0.277 tCO ₂ eq/MT, according to Equation 2, the carbon emission reduction rate of the vinyl chloride resin composition of Example 1 is 3.53%.

Here, the carbon emissions of each component used in the plasticizer composition and the vinyl chloride resin composition of Examples and Comparative Examples are as follows:

- Polyvinyl chloride (PVC, Hanwha Solutions P-1000): 0.182 tCO ₂ eq/MT

- Recycled polyvinyl chloride (PVC scrap): 0 tCO ₂ eq/MT

- Regenerated dioctyl terephthalate (R-DOTP): 0.485 tCO ₂ eq/MT

- Pure dioctyl terephthalate (DOTP, or Pure-DOTP): 0.571 tCO ₂ eq/MT

- Regenerated di (2-ethylhexyl) cyclohexane-1,4-dicarboxylate (R-DEHCH): 0.520 tCO ₂ eq/MT

- pure di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate (DEHCH, or Pure-DEHCH): 0.651 tCO ₂ eq/MT

Among them, the carbon emissions of polyvinyl chloride (PVC) and pure dioctyl terephthalate (DOTP, or Pure-DOTP) refer to the values provided by the manufacturer. In addition, as for the carbon emission of recycled dioctyl terephthalate (R-DOTP), the carbon emission of recycled PTA (Pure terephthalic acid) used in R-DOTP is 70% of that of pure PTA, PTA and 2-EH (2-ethylhexanol) ) is a calculated value assuming that the carbon emissions are the same. PTA and 2-EH are raw materials for manufacturing DOTP.

(2) Plasticizer Color (APHA Color)

The color of the plasticizer was measured using an APHA measuring instrument according to ASTM D1209 and E313.

(3) plasticizer acid value

The acid value of the plasticizer was calculated by the following formula using 0.1N KOH aqueous solution and an indicator.

[Equation 3]

Acid Value = (appropriate amount × 5.6 × factor)/sample amount

In Equation 2, 'appropriate amount' is the consumption amount (ml) of 0.1 N KOH aqueous solution used for titration of the plasticizer, and 'factor' is the correction factor of the KOH aqueous solution (in the case of 0.1 N KOH aqueous solution, the factor is 1) , 'sample amount' indicates the weight (g) of the plasticizer sample.

(4) gelling rate

54 g of the vinyl chloride resin composition was put into a Brabender Mixer at 95 °C, and mixed at 30 rpm for 10 minutes. The gelling time of the resin was analyzed through the torque change during the processing time in the mixer.

(5) hardness (plasticization efficiency)

The vinyl chloride resin composition was sequentially subjected to roll mill processing (170° C., 3 minutes) and press processing (180° C., 8 minutes) to prepare a 6 mm thick flat plate.

Based on the ASTM D2240 method, the needle of the hardness tester (Shore D Type) was completely lowered to one part of the specimen and the hardness value was read after 5 seconds, and after testing 3 places for each specimen, the average value was taken and plasticized It was used as an index indicating the efficiency.

(6) Color of the vinyl chloride resin composition

The vinyl chloride resin composition was sequentially subjected to roll mill processing (170° C., 3 minutes) and press processing (180° C., 8 minutes) to prepare a 6 mm thick flat plate.

For the thus prepared specimen, the yellow index (YI, yellowness) was measured according to ASTM E313 standard. Then, the specimen is put into an accelerated weatherability evaluation equipment (QUV, Q-Lab), and the ASTM G154 method (1 Cycle: UVB 313 nm lamp at a temperature of 60 ° C. with an illuminance of 0.8 W/m ² /nm for 8 hours. After exposure for 300 hours to irradiation and condensation at 50 °C for 4 hours), YI was measured again.

When manufacturing the final resin product, the lower the initial colorability (color, YI) of the vinyl chloride resin composition in terms of excellent color realization, the better.

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 plasticizer composition R-DOTP:DEHCH
=50:50 R-DOTP:DEHCH
=60:40 R-DOTP:DEHCH
=70:30 R-DOTP:R-DEHCH
=50:50 R-DOTP:R-DEHCH
=50:50 R-DOTP:R-DEHCH
=70:30 Carbon emission of plasticizer composition (tCO ₂ eq/MT) 0.568 0.551 0.535 0.503 0.503 0.496 Carbon emission reduction rate of plasticizer composition (%) 7.04 8.56 10.12 17.76 17.76 20.97 plasticizer smell Good Good Good Good Good Good plasticizer color
(YI) 67 78 90 69 69 92 Plasticizer acid value (KOH mg/g) 0.090 0.107 0.120 0.213 0.213 0.205 Carbon emission of vinyl chloride resin composition (tCO ₂ eq/MT) 0.267 0.263 0.259 0.252 0.114 0.25 Carbon emission reduction rate of vinyl chloride resin composition (%) 3.53 4.27 5.01 8.91 53.97 10.66 Gelling rate (sec) 212 225 240 196 190 202 Hardness (plasticization efficiency) 94 94 95 94 93 95 Initial color (YI) 18.4 19.5 20.0 20.0 22.0 21.9 Color (YI) after 300 hours of UV aging 59.8 61.3 62.5 61.0 63.0 63.2

Comparative Example 1 Comparative Example 2 Comparative Example 3 plasticizer composition R-DOTP R-DOTP:DEHCH
=95:5 DOTP:DEHCH
=50:50 Carbon emission of plasticizer composition (tCO ₂ eq/MT) 0.485 0.493 0.611 Carbon emission reduction rate of plasticizer composition (%) 15.06 14.21 0 plasticizer smell smell of oil smell of oil doesn't exist plasticizer color
(YI) 124 118 10 Plasticizer acid value (KOH mg/g) 0.175 0.167 0.005 Carbon emission of vinyl chloride resin composition (tCO ₂ eq/MT) 0.248 0.250 0.277 Carbon emission reduction rate of vinyl chloride resin composition (%) 7.30 6.91 0 Gelling rate (sec) 286 270 226 Hardness (plasticization efficiency) 95 94 95 Initial color (YI) 22.4 21.0 12.7 Color (YI) after 300 hours of UV aging 67.5 65.0 57.7

Referring to Table 1 above, the plasticizer composition of the present invention can reduce carbon emissions by including a recycled raw material, and a pure cyclohexane dicarboxylate-based compound and/or a recycled cyclohexane dicarboxylate-based compound is used together. Accordingly, it can be confirmed that the odor is good, the color and acid value are excellent, and the gelling rate, hardness, and color characteristics are equal to or higher than those of conventional plasticizers.

Claims (14)

a) as a first plasticizer, a regenerated phthalate-based compound; and
b) as a second plasticizer, a pure cyclohexane dicarboxylate-based compound and/or a regenerated cyclohexane dicarboxylate-based compound; A plasticizer composition comprising:
A plasticizer composition comprising less than 95 parts by weight of the first plasticizer in 100 parts by weight of the plasticizer composition.
According to claim 1,
100 parts by weight of the plasticizer,
20 to 85 parts by weight of the first plasticizer, and
A plasticizer composition comprising 5 to 70 parts by weight of the second plasticizer.
According to claim 1,
The first plasticizer is regenerated dibutyl phthalate, regenerated dihexyl phthalate, regenerated dioctyl phthalate, regenerated di-n-octyl phthalate, regenerated diisononyl phthalate, regenerated diisodecyl phthalate, regenerated dibutyl isophthalate, regenerated dioctyl iso One selected from the group consisting of phthalate, regenerated diisononyl isophthalate, regenerated diisodecyl isophthalate, regenerated dibutyl terephthalate, regenerated dioctyl terephthalate, regenerated diisononyl terephthalate, and regenerated diisodecyl terephthalate The above, a plasticizer composition.
According to claim 1,
The first plasticizer has an acid value of 0.05 KOH mg/g to 0.25 KOH mg/g, a plasticizer composition.
According to claim 1,
The cyclohexane dicarboxylate-based compound is di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate, diisononylcyclohexane-1,2-dicarboxylate, di(2-ethylhexyl) ) from the group consisting of cyclohexane-1,2-dicarboxylate, butyl (2-ethylhexyl) cyclohexane-1,4-dicarboxylate, and dibutylcyclohexane-1,4-dicarboxylate At least one selected plasticizer composition.
According to claim 1,
The first plasticizer is recycled dioctyl terephthalate,
wherein the second plasticizer is pure di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate and/or regenerated di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate. .
According to claim 1,
phthalate-based compounds; polyol ester compounds; trimellitate-based compounds; aliphatic ester compounds; phosphate-based compounds; vegetable oil; epoxidized oil; and at least one compound selected from the group consisting of acylated monoglyceride compounds.
According to claim 1,
A plasticizer composition having a carbon emission reduction rate of 5% or more.
According to claim 1,
an acid value of 0.25 KOH mg/g or less,
Yellow index (YI, yellowness) measured by ASTM E313 standard is 120 or less, a plasticizer composition.
The plasticizer composition of any one of claims 1 to 9; and
At least one resin selected from the group consisting of polyvinyl chloride, polystyrene, polyurethane, polyethylene, polypropylene, silicone, modified silicone, ethylene vinyl acetate resin, polyketone, polyvinyl butyral, acrylic, synthetic rubber resin, and thermoplastic elastomer A resin composition comprising a.
11. The method of claim 10,
A resin composition comprising 1 to 200 parts by weight of the plasticizer composition based on 100 parts by weight of the resin.
11. The method of claim 10,
Yellow index (YI, yellowness) measured by ASTM E313 standard is 10 to 25, the resin composition.
11. The method of claim 10,
The yellow index (YI, yellowness) measured after UV aging for 300 hours by the ASTM G154 method is 10-65, the resin composition.
A molded article comprising the resin composition of claim 10 .