KR20090058067A - Vinyl chloride resin composition for wallpaper containing diisononyl terephthalate - Google Patents

Abstract

The present invention relates to a vinyl chloride resin composition for wallpaper comprising a vinyl chloride-based resin and a plasticizer. More specifically, the plasticizer used in the present invention may be diisononyl terephthalate alone or a mixture of diisononyl terephthalate and another plasticizer. The composition of the present invention includes 100 parts by weight of vinyl chloride resin, 50 to 120 parts by weight of plasticizer, 0.5 to 7 parts by weight of stabilizer, 0.5 to 5 parts by weight of blowing agent, 30 to 120 parts by weight of filler and 1 to 20 parts by weight of paper. It is related with the vinyl chloride type resin composition for wallpaper characterized by the above-mentioned. According to the present invention, the amount of volatile organic compounds released is low, the stability to the environment is high, the initial viscosity is low, excellent viscosity stability over time can be achieved, and further, the effect of providing a vinyl chloride resin composition for wallpaper with improved thermal stability There is.

Description

Vinyl chloride-based resin composition containing diisononyl terephthalate (DINTP) for wallcoverings

The present invention relates to a vinyl chloride resin composition for wallpaper comprising a vinyl chloride-based resin and a plasticizer, and more particularly, to minimize the amount of volatile organic compounds (VOCs) generated, high environmental stability and viscosity stability. The present invention relates to a vinyl chloride resin composition which is excellent in thermal stability and is well suited for wallpaper.

The vinyl chloride resin is a hybrid polymer containing at least 50% of a vinyl chloride homopolymer and vinyl chloride, and is one of five general-purpose thermoplastic resins produced by suspension polymerization and emulsion polymerization.

Among them, polyvinyl chloride resins prepared by emulsion polymerization include plasticizers, stabilizers, fillers, blowing agents, pigments, viscosity depressants, and fat sugars (TiO ₂ ). And it is widely used in the flooring, wallpaper, tarpaulin, artificial leather, toys (Toy), undercarriage coatings and the like through the coating molding and mold coating molding processing in the form of plastisol (Plastisol) by mixing a special raw material having a special function.

In particular, more than 60% of the wallpaper is made using a vinyl chloride-based resin, and in this industry, there is a problem in that the amount of volatile organic compounds generated should be minimized in connection with obtaining the HB mark, which is an environmentally friendly certificate. The generation of volatile organic compounds of wallpaper-based vinyl chloride resins is mainly caused by stabilizers, viscosity regulators, and volatile organic solvents used in oily printing, but plasticizers are reported to be involved in some degree.

Plasticizers used in vinyl chloride resins are mainly ester plasticizers, especially DEHP (Di-2-EthylHexyl Phthalate), DBP (Di-Butyl Phthalate), DIDP (Di-IsoDecyl Phthalate), BBP (Butyl Benzyl Phthalate), DINP (Di-IsoNonyl Phthalate) and DNOP (Di-n-Octyl Phthalate) are the most widely used. These ester plasticizers have a limit in reducing the amount of volatile organic compounds generated when used alone, and it is urgent to develop a plasticizer that can compensate for this.

In order to solve the problems of the prior art as described above, the present invention minimizes the amount of volatile organic compounds generated by optimizing the content of components such as vinyl chloride resin, plasticizer, other additives, high environmental stability, low initial viscosity, It is an object of the present invention to provide a vinyl chloride resin composition for wallpaper having excellent viscosity stability over time and excellent thermal stability.

The above and other objects of the present invention can be achieved by the present invention described below.

In order to achieve the above object, the present invention is a vinyl chloride resin composition for wallpaper comprising a vinyl chloride-based resin and a plasticizer, the plasticizer is a diisononyl terephthalate alone or mixed with other plasticizers, characterized in that It is preferable that content is 50-120 weight part with respect to 100 weight part of vinyl chloride resin, and it is more preferable that it is 70-90 weight part.

The vinyl chloride-based resin composition for wallpaper according to the present invention also has a stabilizer of 0.5 to 7 parts by weight, a foaming agent of 0.5 to 5 parts by weight, a filler of 30 to 120 parts by weight and 1 to 20 parts by weight based on 100 parts by weight of the vinyl chloride resin. It may further comprise at least one additive selected from the group consisting of.

As described above, according to the present invention, in the vinyl chloride-based resin composition, diisononyl terephthalate (DINTP) alone or a mixture thereof and other plasticizers may be used as a plasticizer, and a stabilizer, a foaming agent, a filler, By appropriately combining fats and sugars, it minimizes the amount of volatile organic compounds generated in the existing wallpaper, so it is highly stable for the environment, and it is possible to realize favorable properties for acquiring the HB mark. , It is effective to provide a vinyl chloride resin composition for wallpaper having thermal stability.

The present inventors found that the initial viscosity of the plastisol was lower than that of DEHP (di-2-ethylhexylphthalate) and DINP (diisononylphthalate), which is conventionally used as a plasticizer, and thus, the wallpaper coating speed (ie, production rate) was excellent. ), A vinyl chloride resin composition for wallpaper including a DINTP plasticizer, which is advantageous for obtaining an HB mark due to high environmental stability by minimizing generation of volatile organic compounds.

In particular, the vinyl chloride-based resin composition for wallpaper according to the present invention preferably has a BF initial viscosity of 9,000 to 12,000 cP · s of the plastisol, and a daily viscosity elongation of less than 110%. In addition, when tested according to the group quality certification regulations of eco-friendly building materials established by the Korea Air Cleaning Association, the emission of formaldehyde (HCHO) is less than 0.015 ㎎ / ㎡h and the emission of total volatile organic compounds (TVOCs) is 0.10 ㎎ / ㎡ Less than h is preferred. In addition, when used with other conventional plasticizers, the whiteness (WI) of the finished product heated at 230 ^° C. for 70 seconds is 80 or more.

The vinyl chloride-based resin composition for wallpaper according to the present invention has high environmental stability, low initial viscosity, and excellent viscosity stability over time.

Hereinafter, the present invention will be described in more detail.

First, the diisononyl terephthalate (DINTP) plasticizer used in the composition of the present invention can be prepared by the following method.

Production method by esterification reaction using terephthalic acid and isononanol and ester exchange reaction using dimethyl terephthalate and isononanol as raw material Manufacturing method or degradative trans esterification using polyester resin such as polyethylene terephthalate or polybutylene terephthalate and isonanol as a raw material Production method and the like.

In the preparation of diisononyl terephthalate, catalysts may be used to accelerate the reaction, depending on the reaction temperature. In general, the reaction is carried out at 130 ~ 280 ℃, various catalysts are used to suit the appropriate temperature. For example, tetra-isobutyl titanate (TIBT), tetra-isopropyl titanate (TIPT), dibutyl tin oxide, para-toluene sulfonic acid (para-toulene sulfonic acid (PTSA) may optionally be used. Especially paratoluene sulfonic acid or tetraisopropyl titanate is preferable, but it is not limited to this.

The post-treatment after completion of the esterification reaction is not particularly limited, but the excess raw material may be removed by a method such as vacuum distillation and neutralized with a basic solution such as NaOH, KOH, Na ₂ CO ₃ aqueous solution, or the like. . The resultant may then be washed with water, optionally dried under reduced pressure and dehydrated, and then the adsorbent is added and filtered to obtain the final plasticizer composition.

Next, the vinyl chloride resin composition for wallpaper according to the present invention will be described. The vinyl chloride-based resin composition for wallpaper according to the present invention has a low initial viscosity, excellent viscosity stability over time, and minimizes generation of volatile organic compounds to have environmental stability. In particular, the vinyl chloride-based resin composition for wallpaper according to the present invention contains diisononyl terephthalate as a plasticizer. The diisononyl terephthalate plasticizer has a low heat loss compared to diisononyl phthalate (DINP) having the same molecular weight, and thus has excellent heat resistance and high environmental stability due to less generation of volatile organic compounds. Is particularly suitable. Most of the plasticizers conventionally used may be mixed with diisononyl terephthalate in the present invention, and may include one or more of them.

The present invention may use diisononyl terephthalate as a plasticizer, the vinyl chloride resin composition for wallpaper according to the present invention, 50 to 120 parts by weight of the plasticizer, more preferably with respect to 100 parts by weight of vinyl chloride resin 70 to 90 parts by weight. In addition, when used in combination, the plasticizer may be composed of 10 to 100% by weight of diisononyl terephthalate and 0 to 90% by weight of dioctyl terephthalate. When the plasticizer is contained in the vinyl chloride-based resin composition for wallpaper according to the present invention less than 50 parts by weight, the viscosity of the plastisol is low, there is a problem that the workability is lowered, when included in excess of 120 parts by weight bleeding effect (bleeding effect) , A phenomenon in which the plasticizer comes out on the surface of the molded article) tends to occur, and the foam cell state tends to be poor.

The vinyl chloride resin composition according to the present invention may further include additives such as a blowing agent, a stabilizer, an auxiliary stabilizer, a filler, and a fat sugar (TiO ₂ ). The additive may be appropriately selected according to the physical properties to be improved in the vinyl chloride resin composition, and the composition according to the present invention may include one or more of the additives.

More specifically, the vinyl chloride resin composition for wallpaper according to the present invention is based on 100 parts by weight of the vinyl chloride resin, 50 to 120 parts by weight of the plasticizer, 0.5 to 7 parts by weight of the stabilizer, 0.5 to 5 parts by weight of the blowing agent, filler 30 ˜120 parts by weight and 1-20 parts by weight of (TiO ₂ ). This is an optimum formulation that satisfies the foaming properties as well as the low viscosity of the plastisol required for wallpaper.

In the vinyl chloride resin composition, HCl is separated from polyvinyl chloride to form a polyene structure, which is a chromophore, and may be added for the purpose of preventing various physical property changes caused by cutting and crosslinking of the main chain. The stabilizer is Ca-Zn-based compound; Ba-Zn compound; Organic Tin compounds such as mercaptide compounds, maleic acid compounds or carboxylic acid compounds; Metallic soap-based compounds such as Mg-stearate, Ca-stearate, Pb-stearate, Cd-stearate, or BaBa-stearate; Phenolic compounds; Phosphoric acid ester compounds; Or a phosphite ester compound, and the like, and may be selectively used according to the use. In the present invention, in particular, Ca-Zn-based compounds, preferably Ca-Zn-based composite organic compounds may be used. In the vinyl chloride resin composition according to the present invention, the stabilizer may include 0.5 to 7 parts by weight, more preferably 1 to 4 parts by weight. If the stabilizer is contained in less than 0.5 parts by weight, there is a problem that the thermal stability is poor, when included in more than 7 parts by weight there is a problem that more than the required heat stability.

In addition, as the blowing agent used in the composition of the present invention, chemical blowing agents or physical blowing agents alone or mixtures thereof may be used. The chemical blowing agent is not particularly limited as long as it decomposes above a certain temperature to generate a gas, and is not particularly limited. Azodicarbonamide, azodiisobutyro-nitrile, and benzenesulfonylhydrazide ), 4,4-oxybenzenesulfonyl-semicarbazide, p-toluene sulfonyl semi-carbazide, barium azodicarboxyl Barium azodicarboxylate, N, N'-dimethyl-N, N'-dinitrosoterephthalamide (N, N'-dimethyl-N, N'-dinitrosoterephthalamide), tri hydrazino triazine Etc. can be mentioned. Examples thereof include sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate, sodium carbonate, ammonium carbonate and the like. In addition, physical blowing agents include inorganic blowing agents such as carbon dioxide, nitrogen, argon, water, air, helium or aliphatic hydrocarbons containing 1 to 9 carbon atoms, and aliphatic alcohols containing 1 to 3 carbon atoms. organic foaming agents such as aliphatic alcohols and halogenated aliphatic hydrocarbons containing 1 to 4 carbon atoms. Specific examples of such compounds include aliphatic hydrocarbon compounds such as methane, ethane, propane, normal butane, isobutane, normalpentane, isopentane and neopentane, and as aliphatic alcohols methanol, ethanol, normal propanol, isopropanol And halogenated aliphatic hydrocarbon compounds such as methyl fluoride, per fluoromethane, ethyl fluoride, 1,1-difluoroethane, and HFC. -152a), 1,1,1-trifluoroethane (1,1,1-tri fluoroethane, HFC-143a), 1,1,1,2-tetrafluoroethane (1,1,1,2- tetra fluoroethane, HFC-134a), 1,1,2,2-tetrafluoroethane (1,1,2,2-tetra fluoromethane, HFC-134), 1,1,1,3,3-pentafluoro Butane (1,1,1,3,3-penta fluorobutane, HFC-365mfc), 1,1,1,3,3-pentafluoropropane (1,1,1,3,3-pentafluoropropane, HFC.sub .13 245fa), pentafluoroethane, dimple Difluoromethane, perfluoroethane, 2,2-difluoropropane, 1,1,1-trifluoropropane ), Perfluoropropane, dichloropropane, difluoropropane, difluoropropane, perfluorobutane, perfluorocyclobutane, perfluorocyclobutane, methyl chloride, methylene Methylene chloride, ethyl chloride, 1,1,1-trichloroethane, 1,1-dichloro-1-fluoroethane 1-fluoro ethane, HCFC-141b), 1-chloro-1,1-difluoroethane (1-chloro-1,1-difluoro ethane, HCFC-142b), chlorodifluoromethane (HCFC-22 ), 1,1-dichloro-2,2,2-trifluoroethane (1,1-dichloro-2,2,2-trifluoro ethane, HCFC-123), 1-chloro-1,2,2,2 Tetrafluoroethane (1-chloro-1,2,2, 2-tetrafluoroethane, H CFC-124), trichloro monofluoromethane (CFC-11), dichlorodifluoro methane (CFC-12), trichlorotrifluoroethane (CFC-113), 1,1 1,1,1-trifluoroethane, pentafluoroethane, dichlorotetrafluoroethane (CFC-114), chloroheptafluoro propane, Dichloro hexafluoropropane etc. are mentioned. The content of the blowing agent is preferably 0.5 to 5 parts by weight with respect to 100 parts by weight of the vinyl chloride resin. If the content of the blowing agent is too small, the amount of gas for foaming is too small, so that the foaming effect is insignificant or not at all. This is because it cannot be expected, and if it is too large, it is difficult to expect the required physical properties because the amount of gas generated is too large.

By adding a filler to the composition of the present invention, the productivity of the vinyl chloride resin composition and the dry touch (dry touch feeling) can be improved. The filler may be calcium carbonate, clay, talc or diatomaceous earth, and the like. In the vinyl chloride-based resin composition according to the present invention, the filler may be included 30 to 120 parts by weight, more preferably 50 to 100 parts by weight. When the filler is included in less than 50 parts by weight, there is a problem that the dimensional stability and economic efficiency is lowered, when included in more than 100 parts by weight, the foam surface is not good, there is a problem that the workability is lowered.

By adding fat-sugar (TiO ₂ ) to the composition of the present invention, the whiteness and concealability of the vinyl chloride resin composition can be improved. In the vinyl chloride-based resin composition according to the present invention, the fat sugar may preferably include 1 to 20 parts by weight, more preferably 3 to 15 parts by weight. When the fat is contained less than 3 parts by weight, the whiteness and concealability is poor, the color does not come out correctly after printing, if included in more than 15 parts by weight, there is a problem that the foam surface is lowered.

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

The vinyl chloride-based resin composition for wallpaper of the present invention formed as described above includes diisononyl terephthalate (DINTP) as a plasticizer and by optimizing the mixing ratio of additives such as a blowing agent which can obtain suitable properties for application for wallpaper. It provides a low viscosity of the plastisol, good viscosity stability over time and environmental friendliness. Therefore, the vinyl chloride-based resin composition according to the present invention is preferably applied to the wallpaper, the initial viscosity of the plastisol is 9,000 ~ 12,000 cP · s, the daily viscosity aging rate is less than 110%, Korea air cleaning When tested according to the group quality certification regulations of the eco-friendly building materials established by the association, it is preferable that the emission of formaldehyde is less than 0.015 mg / m2h and the emission of total volatile organic compounds is less than 0.10 mg / m2h. Such viscosity stability and environmental friendliness could not be obtained using a plasticizer such as DEHP or DINP, which has been used in the past, and can be obtained only when the wallpaper to which the vinyl chloride-based resin composition of the present invention is applied is obtained.

In addition, when a mixture of ester plasticizers such as DEHP, DINP, DOTP, and diisononyl terephthalate (DINTP) is used, the thermal stability is heated at 230 ^° C. for 70 seconds to give a white index (WI) of 80. This can provide a more optimized composition for wallpaper.

Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following examples are only examples of the present invention, and the scope of the present invention should not be understood as being limited thereto.

<Production of Plasticizer Composition>

Production Example  One

249.21 g of terephthalic acid, 781.38 g of isononanol and 1.00 g of a tetra-isopropyl titanate (TIPT) catalyst were added to a four-necked 2L round flask equipped with a stirrer and a condenser, and the temperature was raised to 220 ° C. while stirring under a nitrogen atmosphere. The reaction was carried out for 9 hours while removing the reaction product water.

After the reaction, unreacted terephthalic acid and excess isononanol were removed under reduced pressure using a vacuum pump at 150 to 220 ° C., and the neutralized water washing process was sequentially performed using 10 wt% sodium hydroxide solution and 10 wt% forget-me-not solution. After dehydration under reduced pressure, the adsorbent was added to the reaction product from which the water was removed, and the filtrate was filtered. Finally, diisononyl terephthalate (DINTP) having a purity of 99.7% was obtained.

<Production of Vinyl Chloride Resin Composition>

By the following method, the vinyl chloride resin composition Examples 1 to 5 were prepared according to the present invention using the plasticizer of Preparation Example 1 by mixing and coating each component according to the composition ratio of Table 1, on the other hand, the composition ratio of Table 1 Therefore, the vinyl chloride resin composition Comparative Examples 1 and 2 were prepared by mixing and coating each component.

Example

Plastisols and specimens prepared using the vinyl chloride resin compositions obtained in Examples 1 to 5 and Comparative Examples 1 and 2, initial viscosity, daily viscosity, elapsed time, HB mark (total volatility) by the following method Organic compounds (TVOC) and formaldehyde (HCHO) were evaluated and the results are shown in Table 2.

Example  One

Based on 100 parts by weight of polyvinyl chloride resin, 70 parts by weight of the plasticizer DINTP, 3 parts by weight of stabilizer, 3 parts by weight of foaming agent, 80 parts by weight of filler, and 15 parts by weight of paper according to the multi-step divided dose mixing method according to the multi-step divided paper mixing method. After coating to a thickness of 0.1 ~ 0.2mm in the foam chamber to heat for 165 ^o C for 40 seconds to prepare a semi-finished product, and heated to 230 ^o C for 40 seconds in the printing process and embossing process to prepare a final wallpaper product, each water Sexual characteristics are listed in Table 2.

Example  2

Except for using the plasticizer DINTP 75 parts by weight based on 100 parts by weight of polyvinyl chloride resin was prepared in the same manner as in Example 1, each of the physical properties are shown in Table 2.

Example  3

Except for using the plasticizer DINTP 80 parts by weight based on 100 parts by weight of polyvinyl chloride resin was prepared in the same manner as in Example 1, each physical property is shown in Table 2.

Example  4

Except for using the plasticizer DINTP 85 parts by weight based on 100 parts by weight of polyvinyl chloride resin was prepared in the same manner as in Example 1, each physical property is shown in Table 2.

Example  5

Except for using the plasticizer DINTP 90 parts by weight based on 100 parts by weight of polyvinyl chloride resin was prepared in the same manner as in Example 1, each physical property is shown in Table 2.

Comparative example  One

Except for using 70 parts by weight of DEHP (Di-2-ethylhexyl phthalate) as a plasticizer based on 100 parts by weight of polyvinyl chloride resin was prepared in the same manner as in Example 1, and the physical properties are shown in Table 2.

Comparative example  2

Except for using 70 parts by weight of DINP (Di-isononyl phthalate) as a plasticizer with respect to 100 parts by weight of polyvinyl chloride resin was prepared in the same manner as in Example 1, and the physical properties are shown in Table 2.

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Polyvinyl chloride 100 100 100 100 100 100 100 DINTP 70 75 80 85 90 - - DEHP - - - - - 70 - DINP - - - - - - 70 stabilizator 3 3 3 3 3 3 3 blowing agent 3 3 3 3 3 3 3 Filler 80 80 80 80 80 80 80 Land 15 15 15 15 15 15 15

(Performance evaluation)

Brookfield ( Brookfield , BF ) Viscosity

100 parts by weight of powdery polyvinyl chloride resin powder was mixed in the composition of Table 1 for 10 minutes at 800 rpm to prepare a plastisol, and then vacuum defoaming to measure the initial viscosity using a Brookfield viscometer. Then, the viscosity was measured over a day after storage for 24 hours in a 25 ^o C thermostat.

Lapse rate

As a ratio of the measured initial viscosity of the plastisol and the viscosity over time, it can be calculated by the following formula.

% Lapse = (1 day-time viscosity / initial viscosity) × 100

HB  Mark

The HB mark is a strict and thorough quality certification test by an accredited testing institute according to the quality certification regulations of eco-friendly building materials group established by the Korea Air Cleaning Association. As a result, it is a mark that gives a product a certification level. The certification level of the wallpaper is determined by the table below, and the grade is indicated by the number of clover in the certification mark.If the number of clover is 5, the best, 4 is excellent, 3 is good, 2 is general I, One is divided into general II.

                                          Unit (mg / ㎡h)

division wallpaper Show (5) ooooo TVOC Less than 0.10 HCHO Less than 0.015 Show (4) oooo TVOC 0.10 or more ~ less than 0.20 HCHO 0.015 or more-less than 0.05 Show (3) ooo TVOC 0.20 or more ~ less than 0.40 HCHO 0.05 or more ~ less than 0.12 Show (2) oo TVOC 0.40 or more ~ less than 2.00 HCHO 0.12 or more ~ less than 0.60 Display (1) o TVOC 2.00 or more and less than 4.00 HCHO 0.60 or more ~ less than 1.25

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Initial viscosity (cPs) 11,600 10,700 10,100 9,800 9,200 12,800 13,200 1 day starting point (cPs) 12,200 11,300 10,600 10,400 9,700 14,500 15,000 % Lapse rate 105 106 105 106 105 113 114 HB mark TVOC 0.07 0.07 0.09 0.10 0.12 3.15 1.78 HCHO 0.009 0.009 0.010 0.05 0.05 1.06 0.49

From Table 2, Examples 1 to 5 it can be seen that the initial viscosity is lower than the Comparative Examples 1 and 2, the elongation rate is also low, excellent viscosity stability, it is advantageous to obtain the environmentally friendly certificate HB mark. That is, some embodiments correspond to five HB mark clover, and some embodiments correspond to about four clover, which is advantageous for obtaining the eco-friendly certificate HB mark.

In addition, in the case of Example 5 DINTP plasticizer can be confirmed that the low viscosity and temporal viscosity stability of the plastisol compared to the general plasticizers DEHP and DINP of Comparative Examples 1 and 2 to 90 parts by weight or more.

In addition, the vinyl chloride resin composition Examples 6 to 8 and Comparative Example 3 of the present invention using the plasticizer of Preparation Example 1 were prepared by mixing and coating the components according to the composition ratios of Table 3 in the following manner.

Example  6

Among 100 parts by weight of polyvinyl chloride resin, 81 parts by weight of DINTP, 9 parts by weight of DEHP, 3 parts by weight of stabilizer, 3 parts by weight of blowing agent, 80 parts by weight of filler, and 15 parts by weight of the plasticizer in the multi-step divided dosage formulation method. After stirring / aging according to the wallpaper for 0.1 ~ 0.2mm thickness on the base paper and then heated to 165 ^o C for 40 seconds in a foaming chamber to produce a semi-finished product, after heating 70 seconds at 230 ^o C in the printing process and embossing process The final wallpaper product was prepared, and the physical properties are shown in Table 4.

Example  7

100 parts by weight of polyvinyl chloride resin was prepared in the same manner as in Example 6, except that 81 parts by weight of DINTP, 9 parts by weight of DINP in 90 parts by weight of the plasticizer was added, and the physical properties are shown in Table 4.

Example  8

It was prepared in the same manner as in Example 6, except that 81 parts by weight of DINTP and 9 parts by weight of DOTP were added to 90 parts by weight of the plasticizer based on 100 parts by weight of the polyvinyl chloride resin, and the physical properties thereof are shown in Table 4.

Comparative example  3

100 parts by weight of polyvinyl chloride resin was prepared in the same manner as in Example 6 except that 90 parts by weight of plasticizer DINTP alone was added, and the physical properties are shown in Table 4.

Example 6 Example 7 Example 8 Comparative Example 3 Polyvinyl chloride 100 100 100 100 DINTP 81 81 81 90 DEHP 9 - - - DINP - 9 - - DOTP - - 9 - stabilizator 3 3 3 3 blowing agent 3 3 3 3 Filler 80 80 80 80 Land 15 15 15 15

(Performance evaluation)

Whiteness ( White index , WI ) Measure

The wallpaper semi-finished product is heated in the Mathis oven at 230 ^o C for 70 seconds and the WI is measured with a colorimeter.

Example 6 Example 7 Example 8 Comparative Example 3 WI 83 85 95 80

From the above Table 4, it can be seen that the WI is 80 or more in Examples 6 to 8 can be applied for wallpaper, it can be seen that it is more preferable to use a mixture of DINTP and DOTP.

Claims (9)

In a vinyl chloride resin composition comprising a vinyl chloride resin and a plasticizer, The plasticizer is characterized in that it comprises diisononyl terephthalate Vinyl chloride-based resin composition for wallpaper. The method of claim 1, The amount of the plasticizer is 50 to 120 parts by weight based on 100 parts by weight of the vinyl chloride resin. Vinyl chloride-based resin composition for wallpaper. The method of claim 1, The amount of the plasticizer is 70 to 90 parts by weight based on 100 parts by weight of the vinyl chloride resin. Vinyl chloride-based resin composition for wallpaper. The method of claim 1, The plasticizer is characterized in that consisting of 10 to 100% by weight of diisononyl terephthalate and 0 to 90% by weight of other plasticizers Vinyl chloride-based resin composition for wallpaper. The method of claim 4, wherein The other plasticizer is selected from the group consisting of DEHP, DBP, DOP, DINP and DOTP Vinyl chloride-based resin composition for wallpaper. Claim 1 to 5 The method of claim 1, wherein Further comprising at least one additive selected from the group consisting of 0.5 to 7 parts by weight of stabilizer, 0.5 to 5 parts by weight, filler 30 to 120 parts by weight and 1 to 20 parts by weight per 100 parts by weight of the vinyl chloride resin. Characterized by Vinyl chloride-based resin composition for wallpaper. The method according to any one of claims 1 to 5, The vinyl chloride resin composition has a release rate of formaldehyde less than 0.015 mg / m 2 and a total emission of 0.10 mg / m 2 h when tested according to the group quality certification regulations of eco-friendly building materials established by the Korea Air Cleaning Association. Less than Vinyl chloride-based resin composition for wallpaper. The method according to any one of claims 1 to 5, wherein The vinyl chloride-based resin composition has an initial viscosity of 9,000 to 12,000 cP · s of the initial plastisol, and a daily viscosity lapse is less than 110%. Vinyl chloride-based resin composition for wallpaper. The method according to any one of claims 1 to 5, wherein The vinyl chloride resin composition has a whiteness (WI) of 80 or more when heated at 230 ^° C. for 70 seconds. Vinyl chloride-based resin composition for wallpaper.