KR20090067946A - Secondary plasticizer composition, preparing method thereof and paste pvc plastisol containing the same - Google Patents

Abstract

A secondary plasticizer composition, a preparation method thereof and paste PVC plastisol containing the same are provided to ensure excellent viscosity depression effect and viscosity-maintaining capability and to reduce emission of volatile organic compounds(VOCs). A secondary plasticizer composition comprises fatty acid organic ester 20 ~ 55 weight% including at least one selected from iso-octyl oleate and methyl oleate; and sodium dioctylsulfosuccinate 45 ~ 80 weight%. The fatty acid organic ester comprises iso-octyl oleate 25 ~ 70 weight% and methyl oleate 30 ~ 75 weight%. A paste PVC plastisol, based on paste PVC resin 100 parts by weight, a first plasticizer 30 ~ 100 parts by weight, a stabilizer 0.5 ~ 5 parts by weight, a foaming agent 0.1 ~5 parts by weight, filler 1 ~ 150 parts by weight and a second plasticizer composition 1 ~ 30 parts by weight.

Description

Secondary plasticizer composition, method for preparing the same, and paste PPC plastisol containing the same {Secondary plasticizer composition, Preparing method etc. and paste PPC plastisol containing the same}

The present invention relates to a secondary plasticizer composition, a method for preparing the same, and a paste poly (vinyl chloride) plastisol including the same. More specifically, at least one selected from iso-octyl oleate (hereinafter referred to as “IOO”) and methyl oleate (hereinafter referred to as “MO”). It relates to a secondary plasticizer composition comprising a fatty acid organic ester and sodium dioctyl sulfosuccinate (hereinafter referred to as "SDS") and a method for producing the same. In addition, the secondary plasticizer composition is characterized in that it is used as a viscosity modifier in the preparation of paste PVC (paste poyl-vinyl chloride) plastisol.

The present invention is a secondary plasticizer composition having excellent viscosity control effect and low volatility, and the finished product made from the paste PVC plastisol prepared using the present invention has a low emission of VOCs and can prevent sick house syndrome. As a result, it can be used in a wide range of fields such as gloves, tarpaulins and undercar coatings, as well as eco-friendly building materials.

Products using PVC resin, which is widely applied to general building interior materials, are used for floor decoration materials, wallpaper, synthetic leather, etc., and are used for our daily life very closely. The final product containing such a paste PVC resin can release various kinds of organic substances and contaminate indoor air and cause serious toxicity when exposed directly or indirectly to human body. It is urgent to develop eco-friendly materials for raw materials.

In general, secondary plasticizers or viscosity diluents as viscosity modifiers used in combination with PVC resins, plasticizers, stabilizers and fillers when processing PVC resins to manufacture building interior materials such as flooring, wallpaper and synthetic leather. It is a necessary substance. In view of the inherent viscosity characteristics of the grade of paste PVC resin according to the use grade, the viscosity control performance of the viscosity modifiers is a very important factor for improving the uniform workability and workability of the final product. In addition, the storage stability of the paste PVC plastisol is a physical property that is considered in terms of productivity improvement and cost reduction, and is greatly influenced by the basic performance such as the viscosity maintaining ability of the viscosity modifiers used in the manufacture of the paste PVC plastisol.

The main role of the viscosity modifier used in the manufacture of paste PVC plastisol is to maintain the viscosity of the PVC plastisol below a certain level, thereby improving processability and increasing storage stability. Therefore, there has been a need for a viscosity control agent having excellent environmental properties such as excellent viscosity control and change over time, which have important physical properties in the manufacture of paste PVC plastisols, while minimizing the release of VOCs.

On the other hand, conventional viscosity diluents used as general-purpose viscosity regulators in the production of paste PVC plastisols are mainly composed of low-aromatic aliphatic hydrocarbons or aromatic hydrocarbons, and various distillation ranges and types of hydrocarbons are used. Kinds of materials have been developed. Its main function has been used in many applications because the action of swelling the paste PVC resin is relatively small and the viscosity of the diluent itself is low, so that the viscosity of the paste PVC resin can be greatly reduced by only 5-10 phr. These hydrocarbon-based viscous diluents are mostly volatilized during the curing and curing stages, but some of the hydrocarbons remain in the final product, causing very slow emission during the use of the product, causing odor and causing indoor air. Deteriorating the quality or causing sick house syndrome (Sick House Syndrome), such as causing toxicity to the human body depending on the product used is a very frequent problem.

On the other hand, most of the secondary plasticizers used as viscosity modifiers of the paste PVC plastisols are fatty acid ester products, and these secondary plasticizers have high boiling points and are VOCs (volatile organic solvents) compared to hydrocarbon viscosity diluents. The amount of release) can be greatly reduced, but since the compatibility with the paste PVC resin is relatively low, the effect of lowering the viscosity has a problem that is significantly lower than that of the general-purpose viscosity diluent.

As a result of continuous efforts by the present inventors to solve the above problems, the viscosity stability of the plastisol is excellent while reducing the amount of primary plasticizer used compared to the conventional viscosity adjusting secondary plasticizer or viscosity diluent used in the manufacture of paste PVC plastisol. In particular, by increasing the compatibility with the paste PVC resin and blended raw materials, the present invention provides a secondary plasticizer composition having a lower initial viscosity of the plastisol than the conventional viscosity modifier of general purpose and less change in viscosity over time and a method for producing the same. There is an object of the invention.

In addition, it is an object of the present invention to provide an environmentally friendly paste PVC plastisol that can reduce the amount of VOCs emission and prevent sick house syndrome by using the secondary plasticizer of the present invention excellent in low volatility.

The present invention relates to a secondary plasticizer composition, a method for preparing the same, and a paste polyvinyl chloride (PVC) plastisol including the same, and provides the following means to solve the above problems.

The first aspect of the present invention

20 to 55 wt% of fatty acid organic esters containing at least one selected from iso-octyl oleate and methyl oleate and sodium dioctyl sulfosuccinate 45 to It is characterized by a secondary plasticizer composition comprising 80% by weight.

The second aspect of the present invention

A first step of warming SDS 45-80 wt% to 145-170 ° C. relative to the total weight of the secondary plasticizer composition;

A second step of stirring and mixing 20 to 55 wt% of at least one fatty acid organic ester selected from iso-octyl oleate and methyl oleate under 70 to 95 ° C. and a nitrogen atmosphere with the heated SDS to form a mixture; And

After cooling the mixture of the second step to room temperature, the second step of stirring again; characterized in that the secondary plasticizer composition manufacturing method comprising a.

The third aspect of the present invention

30 to 100 parts by weight of the first plasticizer, 0.5 to 5 parts by weight of the stabilizer, 0.1 to 5 parts by weight of the foaming agent, 1 to 150 parts by weight of the filler and the secondary plasticizer composition 1 to 30 based on 100 parts by weight of the paste PVC resin. It is characterized by a paste PVC plastisol containing parts by weight.

Since the secondary plasticizer composition of the present invention has excellent viscosity lowering effect and viscosity maintaining ability when used as a viscosity control agent in the preparation of paste PVC plastisol, the uniform workability and workability improvement effect of the finished product manufactured using the present invention Can be provided. In addition, although the initial viscosity of the paste PVC plastisol is low, the change in viscosity with time is very small, and the amount of volatile organic compounds (VOCs) released from the finished product prepared by using the secondary plasticizer of the present invention having excellent low volatility characteristics. This effect is significantly reduced.

The present invention relates to a secondary plasticizer composition, a method for preparing the same, and a paste (poly-vinyl chloride) plastisol (PVC) containing the same. More specifically, the present invention will be described below.

The first aspect of the present invention

20 to 55% by weight of fatty acid organic ester containing one or more selected from iso-octyl oleate and methyl oleate and sodium dioctyl sulfosuccinate 45 to It relates to a secondary plasticizer composition, characterized in that it comprises 80% by weight.

In addition, the fatty acid organic ester is characterized in that it contains 25 to 70% by weight of iso-octyl oleate and 30 to 75% by weight of methyl oleate.

The iso-octyl oleate (hereinafter, referred to as "IOO") is an octyl ester type compound, which is intended to be used to impart a thermal stability improving effect of the secondary plasticizer composition, and has improved thermal stability. Paste PVC plastisols containing secondary plasticizers have the effect of improving printing properties.

Here, it is preferable that IOO is used in an amount of 25 to 70% by weight based on the total weight of the fatty acid organic ester, but if IOO is less than 20% by weight, there is a problem that yellowing occurs due to poor thermal stability, and exceeds 70% by weight. When not only the effect of improving the physical properties compared to the amount used, but also the viscosity stability of the secondary plasticizer is poor.

The methyl oleate (hereinafter referred to as "MO") is a methyl ester type compound, which is used to secure plasticization ability as a plasticizer of the secondary plasticizer composition and to improve viscosity stability of the paste PVC plastisol. Here, MO is preferably used 30 to 75% by weight relative to the total weight of the fatty acid organic ester, if the MO is less than 30% by weight, the plasticizing ability as a secondary plasticizer is insufficient, the effect of reducing the primary plasticizer It is difficult to expect, and if it exceeds 75% by weight, there is a problem in that the cost-effective physical properties and stickiness occurs on the surface of the coating film processed with the paste PVC plastisol.

In the present invention, the sodium dioctyl sulfosuccinate (hereinafter referred to as “SDS”) is a paste PVC resin which is a surface tension reducing effect, a viscosity strengthening effect and another compounding component of paste PVC plastisol. , In order to improve compatibility with fillers and the like. Here, the SDS is preferably used 45 to 80% by weight based on the total weight of the secondary plasticizer, if the SDS is less than 45% by weight has a problem that the viscosity control performance of the secondary plasticizer is not sufficient because the viscosity drop effect is small. When it exceeds 80% by weight, the viscosity control improvement effect is less than the amount used, and bleeding may occur.

The 2nd aspect of this invention is a method of manufacturing the said secondary plasticizer composition, and is as follows.

A first step of warming SDS 45-80 wt% to 145-170 ° C. relative to the total weight of the secondary plasticizer composition;

20 to 55% by weight of one or more fatty acid organic esters selected from IOO and MO at 70 to 95 ° C. and a nitrogen atmosphere with the heated SDS, followed by high stirring at 800 to 2000 rpm for 1 to 5 minutes to form a mixture. step; And

After cooling the mixture of the second step to room temperature, the third step of high-speed stirring at 1000 ~ 3000rpm again for 30 minutes to 1 hour; There is a feature of the present invention in a method for producing a secondary plasticizer composition comprising.

The 3rd aspect of this invention relates to the paste PVC plastisol using the secondary plasticizer composition in the said 1st, 2nd aspect.

30 to 100 parts by weight of the first plasticizer, 0.5 to 5 parts by weight of the stabilizer, 0.1 to 5 parts by weight of the foaming agent, 1 to 150 parts by weight of the filler and the secondary plasticizer of the first embodiment, based on 100 parts by weight of the paste PVC resin. It is characterized by a paste PVC plastisol comprising 1 to 30 parts by weight of the composition.

Hereinafter, the composition of the paste PVC plastisol which is the third aspect of the present invention will be described in more detail.

PVC (poly-vinyl chloride) resin is divided into straight PVC resin and paste PVC resin according to the manufacturing method. Generally, straight PVC resin is processed by calendering method and paste PVC resin is processed by casting method. do. This is because the paste PVC resin hardly absorbs the plasticizer and is simply dispersed to form a stable paste PVC plastisol. However, the straight PVC resin has a property of absorbing the plasticizer or precipitating the plasticizer. Therefore, the present invention is characterized by using a paste PVC resin. In addition, according to the product to be prepared using the present invention paste PVC plastisol, the use of the blowing agent and the filler may be further included.

The primary plasticizer is preferably added to 30 to 100 parts by weight based on 100 parts by weight of the paste PVC resin. If it is less than 30 parts by weight, there is a problem of difficulty in molding the paste PVC resin, and if it exceeds 100 parts by weight, elongation, flexibility, etc. of the paste PVC plastisol composition may be increased, but economically disadvantageous problems may occur.

In addition, the primary plasticizer is dioctyl phthalate (DOP, di-2-ethylhexyl phthalate), dibutyl phthalate (Dibutylphthalate, DBP), diisononyl phthalate (Diisononyl phthalate, DINP), diisodecyl phthalate (DIDP) ), Butyl benzyl phthalate (BBP), Tri-ethylhexyl trimellitate (TOTM), Tri-isononyl trimellitate (TINTM), Triisodecyl trimellitate ( Tri-isodecyl trimellitate (TIDTM), Tri-cresyl phosphate (TCP), Tri-2-ethylhexyl phosphate (TOP), Cresyl diphenyl phosphate, CDP), Di-2-ethylhexyl adipate (DOA), Di-2-ethylhexyl azelate (DOZ), Diisodecyl adipate, DIDA) and Chlorinated paraffin It is preferred to use.

The stabilizer, which is one of the components of the paste PVC plastisol of the present invention, is added in an amount of 0.5 to 5 parts by weight based on 100 parts by weight of the paste PVC resin, wherein when the stabilizer is less than 0.5 parts by weight, the effect of the stabilizer may not be exerted. In addition, even if it adds more than 5 parts by weight, there is no economically disadvantageous problem because there is no increase in the stability effect.

In addition, the stabilizer is Ca. Ba. Zn. Using at least one selected from Cd and Pb, or from organic acid metal stabilizers such as stearic acid salts, basic stearic acid salts, calcium stearate, barium stearate, cadmium stearate, zinc stearate, lauric acid, benzoic acid and Ba-Zn organic compound stabilizers It is preferable to use at least one selected, or to use at least one selected from benzophenol, triazole, and acrironitrile, which are nonmetallic stabilizers.

Preferably, the blowing agent is used in an amount of 0.1 to 5 parts by weight, and if it is less than 0.1 part by weight, there is a problem in that there is little effect of adding a blowing agent. There is a problem of cracking inside. In addition, the blowing agent is ammonium dicarbonate, sodium dicarbonate (NaHCO ₃ ), azobis (isobutyronitrile), AZDN}, N, N'-dimethyl-N , N'-dinitroso-terephthalamide (N, N'-Dimethy-N, N'-dinitroso-terephthalamide, NTA), 4,4'-oxybis (benzinesulfohydrazide) {4,4 ' -Oxybis (benzenesulfonhydrazide), OBSH}, 3,3'-sulfobis (benzene-sulfonylhydrazide) {3,3'-Sulfonbis (benzene-sulfonylhydrazide), D-33}, N, N'- denite Rosso pentamethylenetetramine (N, N'-Dinitroso Pentamethylene tetramine (DPT), Azodicarbonamide (ABFA), p-Toluenesulfonylsemicarbazide, barium azocarboxylate) , BaAC) and sodium boromohydride (NaBH ₄ ) are preferably used.

The filler serves as a filler, it is preferable to add 200 parts by weight or less, more preferably 1 to 150 parts by weight may be added. Here, when the filler is less than 1 part by weight, there is a problem in that the effect of adding the filler is not seen, and when it exceeds 150 parts by weight, there is a problem in that it is advantageous in terms of flexibility, elongation, etc., but the tensile strength is low.

In addition, the filler is silica, diatomaceous earth, hydrated lime, hydrated stone, aluminum hydroxide, basic magnesium carbonate, calcium carbonate, dolomite, magnesium carbonate, zinc carbonate, barium carbonate, hydrotalcite, gypsum, barium sulfate, gypsum fiber, clay, mica , Montmorillonite, Bentonite, Activated Clay, Imogolite, Sericite, Glass Fiber, Glass Beads, Silica-based Balun, Green Stone, Calcium Silicate (Wollastonite), Talc, Sepiolite, Calcium Oxide, Calcium Hydroxide, Dolomite and Carastone It is preferable to use 1 or more types selected from among.

As described above, the paste PVC plastisol prepared according to the present invention exhibits very low environmentally friendly characteristics of TVOCs, and can be used for wallpaper, flooring, gloves, synthetic leather, toys, tarpaulin, automotive undercoat, and the like.

Hereinafter, the embodiment of the present invention will be described in more detail. However, the scope of the present invention is not limited by the following examples.

Preparation of Secondary Plasticizer Composition

Example  One

After heating 60% by weight of SDS to 155 ° C based on the total weight of the secondary plasticizer composition, 50% by weight of iso-octylolate and methyloleate (trade name: SYNATIVE ES) ME V) 50% by weight was added, followed by high-stirring for 4 minutes in a stirrer at 1000 rpm to form a mixture of SDS, IOO and MO. After cooling the mixture to room temperature again, the secondary plasticizer composition was prepared by high-speed stirring in a stirrer at 1000 rpm for 30 minutes.

Example  2

After heating 75% by weight of SDS to 160 ° C based on the total weight of the secondary plasticizer composition and adding 40% by weight of IOO and 60% by weight of MO to the total weight of fatty acid organic ester under 80 ° C and nitrogen atmosphere, Agitating for 4 minutes in a stirrer resulted in a mixture of SDS, IOO and MO. After cooling the mixture to room temperature, the secondary plasticizer composition was prepared by high-speed stirring in a stirrer at 1000 rpm for 30 minutes.

Example 3

A secondary plasticizer composition was prepared in the same manner as in Example 1, except that 75 wt% SDS and 25 wt% fatty acid organic ester were used, and the fatty acid organic ester was secondary using 60 wt% IOO and 40 wt% MO. Plasticizer compositions were prepared.

Example 4

A secondary plasticizer composition was prepared in the same manner as in Example 1, but a secondary plasticizer composition was prepared using IOO 30 wt% and MO 70 wt% based on the total weight of fatty acid organic ester.

Example 5

A secondary plasticizer composition was prepared in the same manner as in Example 1, but a secondary plasticizer composition was prepared using 67 wt% of IOO and 33 wt% of MO based on the total weight of fatty acid organic ester.

Comparative Example 1

A secondary plasticizer composition was prepared in the same manner as in Example 1, but a secondary plasticizer composition was prepared using 20 wt% of IOO and 80 wt% of MO based on the total weight of fatty acid organic ester.

Comparative Example 2

A secondary plasticizer composition was prepared in the same manner as in Example 1, but a secondary plasticizer composition was prepared by using 77 wt% of IOO and 23 wt% of MO based on the total weight of the fatty acid organic ester.

Paste PVC Plastisol  And film Of test specimen  Produce

Production Example  1 to 7 and Comparative Production Example  1 to 5

Specimens were prepared with reference to ASTM D 1824 and KS M 7305 to determine the physical properties of secondary plasticizer compositions as viscosity modifiers with environmentally friendly properties prepared by the present invention.

To prepare a paste PVC plastisol by mixing with the ingredients, the mixing ratio as shown in Tables 1 and 2, and stirred at 700 rpm for 10 minutes using a high speed mixer, and then degassing until the bubbles are completely removed using a vacuum degassing machine. In addition, each plastisol was applied to a release paper fixed on a flat glass plate using a film forming machine (Coater group) to a thickness of 0.17 to 0.35 mm, and then stabilized over a suitable time, and then heated in a hot air oven at 150 ° C and 50 ° C. After holding for a second gelling (gelling), and then foamed again at 210 ℃ temperature, after the cooling process to prepare a PVC resin film specimen, the size of the specimen was 10 cm × 10 cm (width × length) and It was made constant to 1.5 cm x 1.5 cm (width x length) specifications.

In Table 1 below, the secondary plasticizers were used in Preparation Examples 1 to 5 and Comparative Preparation Examples 1 and 2, respectively, in order of the secondary plasticizer compositions prepared in Examples 1 to 5 and Comparative Examples 1 and 2, respectively. In Comparative Preparation Example 3, DOP was also used as the secondary plasticizer except that dioctyl-phthalate (hereinafter, referred to as “DOP”) of the primary plasticizer was used. In Comparative Preparation Example 4, low aromatics were used instead of the secondary plasticizer composition. System aliphatic hydrocarbons (trade name: D-SOL 200) were used.

division Preparation Example 1 Preparation Example 2 Preparation Example 3 Preparation Example 4 Comparative Production Example 1 Comparative Production Example 2 Comparative Production Example 3 Comparative Production Example 4 Paste PVC Resin 100 parts by weight Primary plasticizer Dioctyl-phthalate (DOP) 60 parts by weight stabilizator Ba-Zn organic complex stabilizer 2 parts by weight Secondary plasticizer Secondary Plasticizer Compositions of Examples and Comparative Examples 5 parts by weight - - Dioctylphthalate (DOP) - 5 parts by weight - D-SOL 200 - - 5 parts by weight blowing agent UNICELL- DWT 3 parts by weight filler Calcium carbonate 60 parts by weight  * Paste PVC resin: LG Chem Co., Ltd., PB085 * Ba-Zn organic compound stabilizer: Songwon Industrial Co., Ltd., BZ815K * Low aromatic aliphatic hydrocarbon: Trade name D-SOL 200 * Foaming agent: Dongjin Semichem, Trade name UNICELL- DWT * Calcium Carbonate (Filler): Omiya Korea, Trade Name OMYCARB 5

division Preparation Example 6 Preparation Example 7 Comparative Production Example 5 Paste PVC resin Paste PVC resin 100 parts by weight Primary plasticizer Dioctyl-phthalate (DOP) 30 parts by weight stabilizator Ba-Zn organic complex stabilizer 2 parts by weight Secondary plasticizer 28 parts by weight of the secondary plasticizer composition of Example 1 - - - 28 parts by weight of the secondary plasticizer composition of Example 3 - - - 35 parts by weight of the secondary plasticizer composition of Example 1 blowing agent UNICELL- DWT 2 parts by weight filler Calcium carbonate 70 parts by weight

Experimental Examples 1 to 7 and Comparative Experimental Examples 1 to 5

Initial viscosity and viscosity change measurement

The initial viscosity and viscosity change over time were measured using the plastisols prepared in Preparation Examples 1 to 7 and Comparative Preparation Examples 1 to 5, and the results are shown in Table 3 below. Viscosity was compared using a Brookfield low viscosity viscometer (DV-II + Pro) spindle number 3 (spindle no. 3) and measured at 6 rpm. In addition, the viscosity change over time was measured in each 24 hours interval while leaving the prepared plastisol for 3 days in a thermostat maintained at 25 ℃. Here, Experimental Examples 1 to 7 and Comparative Experimental Examples 1 to 6 perform viscosity measurements on the plastisols prepared in Preparation Examples 1 to 7 and Comparative Preparation Examples 1 to 6, respectively, and show the results.

division Measured viscosity (cp) Initial viscosity 1 day later 3 days later Experimental Example 1 1,108 1,498 1,637 Experimental Example 2 713 1,142 1,525 Experimental Example 3 879 1,475 1,812 Experimental Example 4 1,020 1,437 1,619 Experimental Example 5 1,311 1,516 2,371 Experimental Example 6 2,596 4,267 7,578 Experimental Example 7 2,139 3,741 6,083 Comparative Experimental Example 1 1,153 1,782 2,370 Comparative Experimental Example 2 1,534 1,924 3,151 Comparative Experiment 3 4,265 6,899 14,700 Comparative Experiment 4 2,724 3,540 5,258 Comparative Example 5 3,113 4,889 9,015

Looking at the results of Table 3, the secondary plasticizer composition of the present invention by dropping the initial viscosity of the plastisol used as a viscosity modifier significantly larger than the results of Comparative Examples 3 to 4, including the use of the conventional viscosity modifier, The excellent viscosity drop effect of the secondary plasticizer composition was confirmed. In addition, excellent viscosity retention performance was also exhibited in the characteristics of viscosity change over time, showing improved storage stability, and thus it was confirmed that work stability was improved and uniform workability appeared. In addition, the results of Comparative Experiment 1, which tested Comparative Preparation Example 1, show that the initial viscosity and viscosity change with time is good, but Comparative Experiment 2 shows that the initial viscosity and viscosity change with time are higher than Experimental Example and Comparative Experiment 1 You can check it.

PVC  Loss of Volatilization Using Film Specimen and Total Volatile Organic Compounds  Measure

Volatile weight loss and total volatile organic compounds (TVOC) through the release test of volatile organic compounds (VOCs) and the generation amount of VOCs test using the specimen of the paste PVC film prepared in Preparation Examples 1 to 7 and Comparative Preparation Examples 1 to 5 ) Was measured, and the results are shown in Table 4 below.

Here, the volatilization loss is measured by measuring the weight of the specimen (10cm × 10cm, horizontal × vertical) by circulating air flow, allowing it to stand for 72 hours in a constant temperature bath maintained at 50 ° C, and then measuring the weight of the test piece in the thermostat. The change rate with the initial weight before loading was calculated by the following equation, the results are shown in Table 4 below.

In addition, the total volatile organic compounds were measured by introducing the specimens (1.5 cm × 1.5 cm, horizontal × vertical) into a 1 L volume vessel and introducing them into a heating device heated to a constant temperature (40 ° C., 80 ° C. and 120 ° C.). Odorless gas (high purity helium) was injected while heating for 24 hours. Then, organic matter vaporized in a odor bag (Tedlar bag) was collected, and the collected air was qualitatively and quantitatively analyzed using GC / MSD.

Volatilisation loss (%) = {(initial weight of specimen-weight after volatilization test) / initial weight of specimen} × 100

division Volatilization loss (%) Total Volatile Organic Compounds (TVOCs, ppm) 40 ℃ 80 ℃ 120 ℃ Experimental Example 1 0.10 12.4 434.9 19,501 Experimental Example 2 0.12 8.4 535.0 20,496 Experimental Example 3 0.15 5.1 541.5 21,611 Comparative Experiment 3 0.09 7.5 219.8 8,843 Comparative Experiment 4 0.81 475,4 10,514 131,180

As shown in the test results of Table 2, the volatilization loss and TVOC measured in the film specimens of the plastisol (Experimental Examples 1 to 3) in which the secondary plasticizer composition of the present invention was used as a viscosity control agent was used as a conventional general-purpose product. By significantly reducing the results compared to the result of the prepared specimen (Comparative Example 4), it was confirmed that the excellent VOCs reduction performance according to the excellent low volatility characteristics of the secondary plasticizer composition prepared in the present invention.

Claims (5)

 20 to 55% by weight of fatty acid organic ester containing one or more selected from iso-octyl oleate and methyl oleate and sodium dioctyl sulfosuccinate 45 to A secondary plasticizer composition, characterized in that it comprises 80% by weight. The secondary plasticizer composition according to claim 1, wherein the fatty acid organic ester comprises 25 to 70% by weight of iso-octyl oleate and 30 to 75% by weight of methyl oleate. A first step of heating 45-80% by weight of sodium dioctyl sulfosuccinate to 145-170 ° C based on the total weight of the secondary plasticizer composition; 20 to 55% by weight of a fatty acid organic ester comprising at least one selected from iso-octylolate and methyloleate at 70 to 95 ° C and a nitrogen atmosphere was mixed with the warmed sodium dioctyl sulfosuccinate, followed by 800 A second step of making the mixture by high speed stirring at ˜2000 rpm for 1 to 5 minutes; And After cooling the mixture of the second step to room temperature, the third step of high-stirring again 30 minutes to 1 hour at 1000 ~ 3000 rpm; secondary plasticizer composition manufacturing method comprising a. 30 to 100 parts by weight of the first plasticizer, 0.5 to 5 parts by weight of the stabilizer, 0.1 to 5 parts by weight of the foaming agent, 1 to 150 parts by weight of the filler, and about 1 to 150 parts by weight of the paste PVC resin. Paste PVC plastisol, characterized in that it comprises 1 to 30 parts by weight of the secondary plasticizer composition. The paste PVC plastisol according to claim 4, wherein the paste PVC plastisol is used for the manufacture and processing of wallpaper, flooring, gloves, synthetic leather, toys, tarpaulin, and automobile undercoat.