JPH061858A - Waterproof product of vinyl chloride resin - Google Patents

Abstract

PURPOSE:To provide the title product excellent in waterproofness and nonstickiness. CONSTITUTION:The title product is made from a composition prepared by mixing 25-90 pts.wt. plasticizer comprising a phthalic diester of mixed decyl alcohol comprising 95.0-99.0wt.% 2-propylheptanol and 1.0-5.0wt.% 4-methyl-2- propylhexanol with 1-5 pts.wt. barium-zinc stabilizer and 100 pts.wt. vinyl chloride resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof product made of vinyl chloride resin which is excellent in water resistance and anti-stick property.

[0002]

2. Description of the Related Art Vinyl chloride resin has a good balance of physical strength, is excellent in waterproofness, and is relatively inexpensive.
Widely used for waterproof products such as boots, gloves, bags, kappa, raincoats, aprons, sleeve covers, hair caps, vehicle covers, tents, pools, boats, and floats.

[0003]

Generally, a plasticizer is added to a soft vinyl chloride resin sheet, film, or molded product in order to impart flexibility. As the plasticizer at this time, di-2-ethylhexyl phthalate (hereinafter,
DOP) is widely used in terms of balanced performance and price. However, the plasticizer is dissipated by heat and water in vinyl chloride resin moldings etc. to which DOP is added,
Flexibility and strength decrease. For a waterproof product, the dissipation of the plasticizer by water is an important issue related to product life.

Further, the vinyl chloride resin sheet or film has a problem of stickiness. For example, in the case of umbrellas, tents, and kappa manufactured using such sheets and films, such stickiness becomes a problem in use when opening and closing the umbrella, opening a folded tent, kappa, and the like. This stickiness gives the user considerable discomfort.
Various methods for preventing such stickiness have been studied, but no excellent soft film that economically prevents stickiness has been obtained so far. These DOP
The use of various plasticizers has been studied in order to ameliorate the drawbacks of vinyl chloride resin products to which is added. But,
Simply changing the DOP to a conventional plasticizer does not have a sufficient effect of improving stickiness and dissipation of the plasticizer.

[0005]

[Means for Solving the Problems] The inventors of the present invention have proposed a method for improving the drawbacks up to now without impairing the well-balanced performance and economy of the vinyl chloride resin product further containing a plasticizer. As a result of diligent studies, by using a phthalic acid diester of a specific mixed alcohol as a plasticizer and compounding 1 to 5 parts by weight of a barium-zinc stabilizer, a sheet excellent in stickiness prevention and excellent in water resistance is obtained. As a result, they have completed the present invention.

The waterproof product made of vinyl chloride resin of the present invention is 2
-Propyl heptanol 95.0 to 99.0% by weight,
4-Methyl-2-propylhexanol 1.0 to 5.0
The composition is characterized by using 25 to 90 parts by weight of a plasticizer composed of a phthalic acid diester of decyl alcohol mixed with 100% by weight of a vinyl chloride resin, and 1 to 5 parts by weight of a barium zinc stabilizer. .

The phthalic acid diester used in the vinyl chloride resin waterproof product of the present invention is 2-propylheptanol 9
5.0 wt% to 99.0 wt% and 4-methyl-2-
Propylhexanol is obtained by the esterification reaction of 1.0 to 5.0% by weight of mixed decyl alcohol with phthalic acid or phthalic anhydride.

The mixed decyl alcohols used to prepare the phthalic acid diesters are prepared, for example, by oxo synthesis using butene-1 as the olefin to prepare a mixture of n-valeraldehyde and 2-methylbutyraldehyde, the aldol of these aldehydes. A mixture of 2-propylheptenal and 4-methyl-2-propylhexenal can be produced by condensation and subsequent dehydration reaction, and can be synthesized by hydrogenation reaction of these mixtures. If desired, the mixed decyl alcohol composition may be prepared by distillation. However, the present invention is not limited by these manufacturing methods. For example, it is possible to prepare 2-propylheptanol and 4-methyl-2-propylhexanol separately and mix them.

The vinyl chloride resin used in the waterproof product of the present invention is a vinyl chloride homopolymer and a vinyl chloride copolymer, and the vinyl chloride copolymer is mainly composed of vinyl chloride and other monomers such as ethylene, propylene and acetic acid. Examples thereof include copolymers with vinyl, alkyl vinyl ether, methacrylic acid ester, acrylic acid ester and the like, but the present invention is not limited to these resins.

The barium-zinc-based stabilizer used in the waterproof product of the present invention is a composite stabilizer of barium salt and zinc salt of organic acid, and may be liquid or paste. Examples of the organic acid include carboxylic acids such as octylic acid, oleic acid, ricinoleic acid, naphthenic acid and benzoic acid.

In addition to the phthalic acid diester of mixed decyl alcohol as a plasticizer for the waterproof product of the present invention, a plasticizer generally used for vinyl chloride resins, such as DOP, diisononyl phthalate, di-2-ethylhexyl adipate, and epoxy. A soybean oil, a phosphate ester-based plasticizer, etc. may be contained, and these may be used in combination. However, the proportion of the plasticizer used in combination is within a range that does not impair the effects of the present invention.

The waterproof product of the present invention includes vinyl chloride resin,
In addition to diester phthalate, if necessary, stabilizers, stabilizing aids, antioxidants, lubricants, ultraviolet absorbers, colorants, reinforcing agents, processing aids, fillers and the like can be added.

Examples of the stabilizer include lead salts such as tribasic sulfate, metal soap stabilizers such as calcium stearate, barium stearate, zinc stearate, calcium ricinoleate and barium laurate.
Examples thereof include organic tin stabilizers such as dibutyltin dilaurate, dibutyltin maleate, and dioctyltin mercaptide.

Stabilizing aids include, for example, phosphite esters such as triphenyl phosphite, tri-2-ethylhexyl phosphite and trinonylphenyl phosphite, and antioxidants include For example, t-butyl hydroxytoluene and dilauryl thiodipropionate may be mentioned.

Examples of the lubricant include stearic acid, stearic acid amide, and polyethylene wax. Examples of the ultraviolet absorber include 2- (5′-methyl-2′-hydroxyphenyl) benzotriazole,
2- (3'-t-butyl-5'-methyl-2'-hydroxyphenyl) -5-chlorobenzo-1,2,4-triazole is mentioned.

Examples of the colorant include inorganic pigments such as phthalocyanine blue, titanium oxide and carbon black,
Organic pigments may be mentioned. Examples of the reinforcing agent include a copolymer of polymethacrylic acid ester, butadiene and styrene, acrylonitrile-butadiene rubber, and a copolymer of ethylene and vinyl acetate.

Examples of processing aids include polymethylmethacrylate. Examples of the filler include calcium carbonate. However, the present invention is not limited to the types of these additives.

As a concrete example of the vinyl chloride resin waterproof product of the present invention, as described above, the vinyl chloride resin waterproof product
It is a sheet-shaped composition obtained by mixing a phthalic acid diester of decyl alcohol mixed with propylheptanol and 4-methyl-2-propylhexanol and a barium-zinc stabilizer. The manufacturing process is, for example, mixing with a commonly used ribbon blender or Henschel type mixer, then kneading with a Banbury mixer or two rolls, and then film forming with an extruder or laminator equipped with a calendar roll or T-type die. Is.

[0019]

EXAMPLES The excellent properties of the film as one of the vinyl chloride resin waterproof products of the present invention will be described in more detail with reference to examples. Moreover, the following evaluation tests are based on the following methods. [Tensile strength, elongation] According to JIS K 7113. [Hardness] According to JIS K 6301, a spring type hardness tester A type was used.

[Tear Strength] According to JIS K 6301, a B-shaped test piece was used for the measurement. [Flexible temperature] According to JIS K 6745.

[Rate of change in weight by heating] JIS K 7113
No. 2 test piece with a gear type aging tester at 120 ° C for 12
Heat for 0 hours and measure the rate of weight change. The weight change rate is the difference between the weights of the test pieces before and after the test divided by the weight before the test, and is shown as a percentage. Negative indicates weight loss.

[Ratio of change in weight of warm water] JIS K 7113
No. 2 test piece was immersed in 100 ° C. hot water for 480 hours,
The weight change rate is measured. The weight change rate is the difference between the weights of the test pieces before and after the test divided by the weight before the test, and is shown as a percentage. Negative indicates weight loss. [100% modulus] JI as flexibility by temperature
According to the tensile test of SK 7113, the stress when the elongation reached 100% was obtained.

[Peeling load with stickiness] Two test films having a thickness of 0.075 mm cut into 50 × 120 mm are superposed, and 50 × 50 mm on one side thereof is smoothed from above and below 50 × 5.
It is sandwiched between 0 mm glass plates (thickness 1 mm). Furthermore, a load of 1 kg is placed on the upper glass plate, and the temperature is 70 ° C and the humidity is 8
Place in a 0% constant humidity chamber and leave for 2 hours. Two hours later,
This is taken out from the constant temperature and humidity chamber, the load and the glass plate are immediately removed, and the sample is left for 24 hours in a room where the temperature is 23 ° C. and the humidity is 50%.

Then, the film ends of the two-layered film samples on which the load is not applied are attached one by one to the upper and lower sides of the grip of the tensile tester to separate the two laminated films. The required force was measured. Each of the three sets of film samples was measured, and the arithmetic mean value of those values was used as the measured value. The smaller the measured value is, the less sticky the film is and the better the peeling between the films is.

Example 1 [Preparation of mixed decyl alcohol] Magnetic stirrer,
Commercially available n-valeraldehyde 688.3 g, 2-methylbutyraldehyde 1 in a 2-liter four-necked flask equipped with a Dimroth condenser, thermocouple thermometer and dropping device.
4.2 g was charged and stirred. A 1.0 wt% NaOH aqueous solution was prepared and added dropwise into the flask at 25 ° C.
The dropping was completed after 60 minutes, and the system temperature at this time was 58 ° C. After this, heating was started and stirring was continued for 4 hours after reaching 85 ° C. Next, after cooling to room temperature, stirring was stopped and oil-water separation was carried out to obtain an oil layer (aldol condensation liquid) of 584.8 g (water content 0.54% by weight).

Oil layer 534. of the aldol condensation liquid was placed in a 1 liter stainless steel autoclave equipped with a magnetic stirrer, hydrogen pressure regulator and thermocouple thermometer under a nitrogen atmosphere.
2 g and Raney nickel 26.5 g as a catalyst were charged. After the system was replaced with hydrogen three times, the hydrogen pressure was changed to 50 kg /
It was set to cm ² and stirred at 500 rpm. At the same time,
When the electric furnace was heated and the temperature started to rise, the system temperature was 95
Hydrogen absorption started at around 0 ° C and continued for 3.5 hours thereafter (the maximum temperature reached during that time was 160 ° C). After the hydrogen absorption was stopped, the stirring was continued at 130 to 145 ° C. for another 2 hours, and then the heating was stopped.

After standing overnight, the catalyst was filtered off using a membrane filter to obtain 540.2 g of an oil layer.
This oil layer was distilled under reduced pressure using a 25-stage Oldershaw distillation apparatus. At the beginning of distillation, the operation was carried out at a reduced pressure of 30 to 60 mmHg, and then the reduced pressure was changed from 10 to 30 mmHg to obtain a distillate having a column top temperature of 105 ° C / 16 mmHg to 106 ° C / 17 mmHg. As a result of analysis by capillary gas chromatography, 2-propylheptanol (2PH
O) 96.0 wt% and 4-methyl-2-propylhexanol (MPHO) 3.9 wt% were found to be mixed decyl alcohols.

[Preparation of phthalic acid diester] A 2 liter flask was charged with 413.2 g of phthalic anhydride and 1086.5 g of mixed decyl alcohol as raw materials under a nitrogen atmosphere. The temperature of the reaction solution was set to 6 by heating this solution while stirring
When the temperature reached 0 ° C., 7.0 g of a 25 wt% decanol solution of tetraisopropoxy titanium as a catalyst was added, and the temperature was further raised to 220 ° C. The produced water was removed to the outside of the system using an oil-water separator attached to the reactor, and the unreacted alcohol was returned to the inside of the system. Sampling was carried out every hour after the temperature of the reaction solution reached 220 ° C., and the acid value was 0.
When the temperature becomes 3 or less (after about 5 hours), stop heating,
After undergoing normal neutralization, washing with water, distillation under reduced pressure and post-treatment operations,
Phthalic acid didecyl ester (DXP-1)
1160 g was obtained. At this time, the acid value was 0.021, the residual alcohol content was 100 ppm or less, and the water content was 0.07% by weight.

[Production of vinyl chloride resin waterproof film] Polyvinyl chloride having an average degree of polymerization of 1030 (manufactured by Chisso Corporation:
To 100 parts by weight of PVC Nipolit SL), 50 parts by weight of didecyl phthalate (DXP-1) and 2 parts by weight of barium-zinc-based liquid stabilizer were blended, and this was kneaded for 5 minutes on a test roll at 175 ° C. A sheet sample having a thickness of 1.3 mm was prepared. Further, this was preheated at 185 ° C. for 2 minutes and then pressed at a pressure of 150 kg / cm ² for 3 minutes to prepare a press sheet having a thickness of 1 mm. Using the sheet, tensile strength, elongation, hardness, Tear strength, softening temperature, heating weight change rate, warm water weight change rate, and 100% modulus test pieces for measurement were prepared and measured. Separately, the same composition as above was kneaded with a test roll at 175 ° C. for 5 minutes to prepare a film sample having a thickness of 0.075 mm, and the sticky peeling load was measured.

Example 2 [Preparation of mixed decyl alcohol] Magnetic stirrer,
Commercially available n-valeraldehyde 695.3 g, 2-methylvaleraldehyde 7.0 in a 2-liter four-necked flask equipped with a Dimroth condenser, a thermocouple thermometer and a dropping device.
g and then stirred. A 1.0 wt% NaOH aqueous solution was prepared and added dropwise into the flask at 25 ° C. The dropping was completed after 60 minutes, and the system temperature at this time was 58 ° C. After this, heating was started and stirring was continued for 4 hours after reaching 85 ° C. Next, after cooling to room temperature, stirring was stopped, oil-water separation was performed, and an oil layer (aldol condensation liquid) of 585.7 g (water content 0.56% by weight) was obtained.

Oil layer 535. of aldol condensate in a 1 liter stainless steel autoclave equipped with a magnetic stirrer, hydrogen pressure regulator and thermocouple thermometer under a nitrogen atmosphere.
1 g and Raney nickel 26.5 g as a catalyst were charged. After the system was replaced with hydrogen three times, the hydrogen pressure was changed to 50 kg /
It was set to cm ² and stirred at 500 rpm. At the same time,
When the electric furnace was heated and the temperature started to rise, the system temperature was 95
Hydrogen absorption started at around 0 ° C and continued for 3.5 hours thereafter (the maximum temperature reached during that time was 160 ° C). After the hydrogen absorption was stopped, the stirring was continued at 130 to 145 ° C. for another 2 hours, and then the heating was stopped. After standing overnight, the catalyst was filtered off using a membrane filter to obtain 540.2 g of an oil layer. This oil layer was distilled under reduced pressure using a 25-stage Oldershaw distillation apparatus. At the beginning of distillation, the operation was performed at a pressure reduction degree of 30 to 60 mmHg, and then the pressure reduction degree was 10
To 30 mmHg to obtain a distillate having a tower top temperature of 105 ° C / 16 mmHg to 106 ° C / 17 mmHg. As a result of analyzing this by capillary gas chromatography, 9% by weight of 2-propylheptanol (2PHO) and
4-Methyl-2-propylhexanol (MPHO)
It was found to be mixed decyl alcohol containing 2.0% by weight.

[Preparation of phthalic acid diester] A 2 liter flask was charged with 413.4 g of phthalic anhydride and 1086.5 g of mixed decyl alcohol as raw materials under a nitrogen atmosphere. The temperature of the reaction solution was set to 6 by heating this solution while stirring
When the temperature reached 0 ° C., 7.0 g of a 25 wt% decanol solution of tetraisopropoxy titanium as a catalyst was added, and the temperature was further raised to 220 ° C. The produced water was removed to the outside of the system using an oil-water separator attached to the reactor, and the unreacted alcohol was returned to the inside of the system. Sampling was carried out every hour after the temperature of the reaction solution reached 220 ° C., and the acid value was 0.
When the temperature becomes 3 or less (after about 5 hours), stop heating,
After undergoing normal neutralization, washing with water, distillation under reduced pressure and post-treatment operations,
Target phthalic acid didecyl ester (DXP-2)
1161 g was obtained. At this time, the acid value was 0.020, the residual alcohol content was 100 ppm or less, and the water content was 0.06% by weight.

[Production of a vinyl chloride resin waterproof film]
Example 1 was repeated except that DXP-1 was changed to DXP-2.

Example 3 [Production of a vinyl chloride resin waterproof film] DXP-2 was changed to 50 parts by weight to 70 parts by weight, and otherwise the same as in Example 2.

Example 4 [Manufacture of Vinyl Chloride Resin Waterproof Film] DXP-2 was changed from 50 parts by weight to 85 parts by weight, and otherwise the same as in Example 2.

Example 5 [Production of a waterproof film made of vinyl chloride resin] DXP-2 was changed to 50 parts by weight to 30 parts by weight, and otherwise the same as in Example 2.

Comparative Example 1 [Production of Vinyl Chloride Resin Film] The same procedure as in Example 2 was carried out except that the barium-zinc stabilizer was not used.

Comparative Example 2 [Preparation of mixed decyl alcohol] Magnetic stirrer,
A commercially available n-barrel aldehyde 668.0 g, 2-methylbutyraldehyde 35.0 was placed in a 2-liter four-necked flask equipped with a Dimroth condenser, a thermocouple thermometer and a dropping device.
5 g was charged and stirred. A 1.0 wt% NaOH aqueous solution was prepared and added dropwise into the flask at 25 ° C. 60
After a lapse of minutes, the dropping was completed, and the temperature in the system at this time was 57 ° C. After this, heating was started and stirring was continued for 4 hours after reaching 85 ° C. Next, after cooling to room temperature, stirring was stopped and oil-water separation was carried out to obtain an oil layer (aldol condensation liquid) of 584.2 g (water content 0.54% by weight).

Oil layer 533. of the aldol condensation liquid was placed in a 1 liter stainless steel autoclave equipped with a magnetic stirrer, hydrogen pressure regulator and thermocouple thermometer under a nitrogen atmosphere.
9 g and Raney nickel 26.7 g as a catalyst were charged. After the system was replaced with hydrogen three times, the hydrogen pressure was changed to 50 kg /
It was set to cm ² and stirred at 500 rpm. At the same time,
When the electric furnace was heated and the temperature started to rise, the system temperature was 95
Hydrogen absorption started at around 0 ° C and continued for 3.5 hours thereafter (the maximum temperature reached during that time was 160 ° C). After the hydrogen absorption was stopped, the stirring was continued at 130 to 145 ° C. for another 2 hours, and then the heating was stopped. After standing overnight, the catalyst was filtered off using a membrane filter to obtain 540.2 g of an oil layer. This oil layer was distilled under reduced pressure using a 25-stage Oldershaw distillation apparatus. At the beginning of distillation, the operation was performed at a pressure reduction degree of 30 to 60 mmHg, and then the pressure reduction degree was 10
To 30 mmHg to obtain a distillate having a column top temperature of 103 ° C./15 mmHg to 106 ° C./17 mmHg. As a result of analysis by capillary gas chromatography, 2-propylheptanol (2PHO) was 89.9% by weight, and
4-Methyl-2-propylhexanol (MPHO)
It was found to be a mixed decyl alcohol containing 9.9% by weight.

[Preparation of Phthalic Acid Diester] A 2 liter flask was charged with 413.0 g of phthalic anhydride and 1086.3 g of the mixed decyl alcohol as raw materials under a nitrogen atmosphere. This solution was heated with stirring, and when the temperature of the reaction solution reached 60 ° C., 6.9 g of a 25 wt% decanol solution of tetraisopropoxy titanium as a catalyst was added, and then the temperature was further raised to 220 ° C. The produced water was removed to the outside of the system using an oil-water separator attached to the reactor, and the unreacted alcohol was returned to the inside of the system. Sampling was performed every hour after the temperature of the reaction solution reached 220 ° C., heating was stopped when the acid value became 0.3 or less (after about 5 hours), normal neutralization, washing with water, After the distillation under reduced pressure and the post-treatment operation, the desired product, phthalic acid didecyl ester (DXP-
3) 1158 g was obtained. At this time, the acid value was 0.022, the residual alcohol content was 100 ppm or less, and the water content was 0.05% by weight.

[Production of Vinyl Chloride Resin Film] DXP
-1 was changed to DXP-3, and otherwise the same as in Example 1.

Comparative Example 3 [Preparation of mixed decyl alcohol] Magnetic stirrer,
700.5 g of commercially available n-barrel aldehyde was charged and stirred in a 2-liter four-necked flask equipped with a Dimroth condenser, a thermocouple thermometer and a dropping device. 1.0% by weight
An aqueous NaOH solution was prepared and added dropwise into the flask at 25 ° C. The dropping was completed after 60 minutes, and the system temperature at this time was 62 ° C. After this, heating was started and stirring was continued for 4 hours after reaching 85 ° C. Next, after cooling to room temperature, stirring was stopped and oil-water separation was performed to obtain an oil layer (aldol condensation liquid) of 585.4 g (water content 0.58% by weight).

An oil layer 53 of the aldol condensation liquid was placed under a nitrogen atmosphere in a 1 liter stainless steel autoclave equipped with a magnetic stirrer, a hydrogen pressure regulator and a thermocouple thermometer.
4.5 g and Raney nickel 26.5 g as a catalyst were charged. After the system was replaced with hydrogen three times, the hydrogen pressure was adjusted to 50
It was set to kg / cm ² and stirred at 500 rpm. At the same time, when the electric furnace was heated and the temperature started to rise, hydrogen absorption started at a system temperature of around 95 ° C and continued for 3.5 hours thereafter (the maximum temperature reached during that time was 160 ° C). ). 130 hours for 2 more hours after hydrogen absorption is stopped
To 145 ° C., the heating was stopped. After standing overnight, the catalyst was filtered off using a membrane filter to obtain 540.4 g of an oil layer. This oil layer was distilled under reduced pressure using a 25-stage Oldershaw distillation apparatus. At the beginning of distillation, the operation was performed at a reduced pressure of 30 to 60 mmHg, and then the reduced pressure was set to 1
Change from 0 to 30mmHg and the tower top temperature is 112 ℃ / 20mmHg
A distillate of 113 ° C./20 mmHg was obtained. As a result of analyzing this with capillary gas chromatography,
Propylheptanol (2PHO) 99.8% by weight and 4-methyl-2-propylhexanol (MPH
O) was found to be decyl alcohol containing 0.1% by weight.

[Preparation of phthalic acid diester] A 2 liter flask was charged with 413.2 g of phthalic anhydride and 1086.5 g of mixed decyl alcohol as raw materials under a nitrogen atmosphere. This solution was heated with stirring, and when the temperature of the reaction solution reached 60 ° C., 7.0 g of a 25 wt% decanol solution of tetraisopropoxy titanium as a catalyst was added, and then the temperature was further raised to 220 ° C. The produced water was removed to the outside of the system using an oil-water separator attached to the reactor, and the unreacted alcohol was returned to the inside of the system. Sampling was performed every hour after the temperature of the reaction solution reached 220 ° C., heating was stopped when the acid value became 0.3 or less (after about 5 hours), normal neutralization, washing with water, After the distillation under reduced pressure and the post-treatment operation, the desired product, phthalic acid didecyl ester (DXP-
4) 1160 g was obtained. At this time, the acid value was 0.021, the residual alcohol content was 100 ppm or less, and the water content was 0.04% by weight.

[Production of Vinyl Chloride Resin Film] DXP
The same procedure as in Example 1 was carried out except that -1 was used instead of DXP-4.

Comparative Example 4 [Production of Vinyl Chloride Resin Film] DXP-1 was replaced with a commercially available DOP (manufactured by Chisso Corporation), and otherwise the same as in Example 1.

Comparative Example 5 [Production of Vinyl Chloride Resin Film] The same test as in Example 1 was conducted except that DXP-1 was changed to diisononyl phthalate (Dinp manufactured by Sekisui Chemical Co., Ltd.).

Comparative Example 6 [Production of Vinyl Chloride Resin Film] DXP-1 was mixed with diisodecyl phthalate (Sekisui Chemical Co., Ltd .: DIDP) 5
The amount was changed to 0 parts by weight, and the other operations were performed in the same manner as in Example 1.

The results of these Examples are shown in Table 1 and the results of Comparative Examples are shown in Table 2.

[Table 1]

[0050]

[Table 2]

[0051]

The vinyl chloride resin waterproof product of the present invention is
As can be seen from the measurement results of the rate of change in weight of warm water, the plasticizer is less dissipated by water, and therefore the flexibility and strength of the vinyl chloride resin product is less likely to be reduced by the plasticizer dissipating. Also, as you can see from the measurement results of the sticky load, it has excellent stickiness prevention, and it is comfortable to open and close when using it for umbrella tents, kappa, etc. That is, there is no discomfort,
It is an excellent waterproof product.

Claims (1)

[Claims] 1. 2-propylheptanol 95.0-9
25 to 90 parts by weight of a plasticizer consisting of a phthalic acid diester of decyl alcohol mixed with 9.0% by weight and 4-methyl-2-propylhexanol 1.0 to 5.0% by weight, and a barium-zinc stabilizer 1 to 5 parts by weight of vinyl chloride resin 10
A waterproof product made of vinyl chloride resin, characterized by using a composition blended in an amount of 0 part by weight.