KR20190026377A - Stabilizer and polyvinyl chloride sheet prepared using the same - Google Patents

Abstract

The present invention provides a stabilizer for stabilizing physical and chemical properties of a polyvinyl chloride resin, and a polyvinyl chloride sheet produced by using a polyvinyl chloride resin composition containing the stabilizer. The polyvinyl chloride sheet of the present invention is excellent in transparency, coloring properties, heat resistance, processability, and is environmentally friendly. The present invention provides the stabilizer comprising a compound represented by general formula (1), a barium-based compound and a zinc-based compound, wherein the general formula (1) is (RO)_(3)P.

Description

TECHNICAL FIELD [0001] The present invention relates to a stabilizer and a polyvinyl chloride sheet produced by using the stabilizer and a polyvinyl chloride sheet,

The present invention relates to a stabilizer and a polyvinyl chloride sheet produced therefrom.

In general, polyvinyl chloride sheets are widely used as interior materials because they can be easily applied in a short time and are easy to maintain. Such a polyvinyl chloride sheet is made of a composition comprising a polyvinyl chloride resin, a plasticizer and a stabilizer composition (hereinafter referred to as a " stabilizer ").

The stabilizer serves to stably maintain the physical and chemical properties of the resin during the use of the polyvinyl chloride sheet. As a component of such a stabilizer, a phenolic compound which does not affect the transparency and coloring property of the polyvinyl chloride sheet has been mainly used. Recently, as the environmental regulations are strengthened, it is required to reduce or replace the use of the phenolic compound.

Therefore, there is a need to develop a stabilizer capable of replacing a phenolic compound, without affecting the physical properties of the polyvinyl chloride sheet.

Korean Public Utility Model Publication No. 2010-0006234

The present invention is to provide a stabilizer containing no phenolic compound and a polyvinyl chloride sheet having excellent physical properties as prepared using the stabilizer.

In order to solve the above problems, the present invention provides a stabilizer comprising a compound represented by the following general formula (1), a barium-based compound and a zinc-based compound.

[Chemical Formula 1]

(RO) ₃ P

In the above formula (1), R is a C ₁ to C ₂₅ aliphatic group.

The present invention also provides a polyvinyl chloride resin composition comprising the stabilizer.

The present invention also provides a laminated sheet comprising: a first sheet layer formed of a first polyvinyl chloride resin composition; And a second sheet layer laminated on the first sheet layer and formed of a second polyvinyl chloride resin composition, wherein at least one of the first polyvinyl chloride resin composition and the second polyvinyl chloride resin composition And a polyvinyl chloride sheet containing the stabilizer.

The present invention relates to a polyvinyl chloride resin composition comprising a compound represented by the above formula (1) and a polyvinyl chloride resin composition. The polyvinyl chloride sheet is excellent in transparency, colorability, processability and heat resistance, have.

1 is a cross-sectional view of a polyvinyl chloride sheet according to an embodiment of the present invention.

The present invention relates to a stabilizer, a polyvinyl chloride resin composition containing the stabilizer, and a polyvinyl chloride sheet produced using the stabilizer, which will be described in detail as follows.

The stabilizer according to one embodiment of the present invention includes a compound represented by the following formula (1), a barium compound, and a zinc compound.

The compound represented by the formula (1) is a phosphite complex which does not contain phenyl.

[Chemical Formula 1]

(RO) ₃ P

In the above formula (1), R may be a C ₁ to C ₂₅ aliphatic group, preferably a C ₆ to C ₂₀ aliphatic group, more preferably a C ₈ to C ₁₅ aliphatic group.

The stabilizer according to one embodiment of the present invention is more environmentally friendly and safer than the conventional stabilizer by including the compound represented by the formula (1) that does not include phenyl.

That is, conventionally, in order to obtain transparency, colorability and the like as well as thermal stability of a polyvinyl chloride resin, a phosphite-based compound to which phenyl is bonded (specific examples include diphenyl isodecyl phosphite, phenyl diisodecyl phosphite, Fate, etc.) was used, but there was a problem that the environment-friendliness and safety of the stabilizer were deteriorated due to the content of phenyl.

However, according to the present invention, the use of the compound represented by the above formula (1) can ensure the environmental friendliness and safety of the stabilizer.

The compound represented by the formula (1) can be obtained by reacting a compound represented by the following formula (2) with an alcohol.

(2)

P (X) ₃

In Formula 2, X is halogen.

Specifically, the chemical formula of the compound represented by Formula 2 and the alcohol is as follows.

P (X) ₃ + 3ROH - > (RO) ₃ P + 3HX

In the above formula, R may be a C ₁ to C ₂₅ aliphatic group, preferably a C ₆ to C ₂₀ aliphatic group, more preferably a C ₈ to C ₁₅ aliphatic group.

Specific examples of the compound represented by Formula 1 include (C ₁₀ H ₂₁ O) ₃ P, (C ₁₃ H ₂₇ O) ₃ P, and the like. Specific examples of the compound represented by the above-mentioned general formula (2) include tripolyphosphorus (PF ₃ ), phosphorus trichloride (PCl ₃ ), triiodine phosphorus (PI ₃ ), and tribromone (PBr ₃ ).

The amount of the compound represented by the formula (1) is preferably 10 to 50 parts by weight, more preferably 20 to 45 parts by weight, more preferably 25 to 40 parts by weight, based on 100 parts by weight of the stabilizer, . Specifically, when the amount of the compound represented by the general formula (1) is less than 10 parts by weight, heat stability and colorability may be deteriorated, and when it exceeds 50 parts by weight, the economical efficiency may be deteriorated.

The barium-based compound can improve the processability and gelation property of the polyvinyl chloride resin. Specific examples of such barium-based compounds include barium oleate, barium benzoate, barium octanoate, barium octylate, barium formate, Barium nitrate, barium citrate, barium acetate, barium oxalate, barium 2-ethylhexanoate, barium neodecanoate, barium tartrate barium tartrate, and the like, or a mixture of one or more thereof.

The content of the barium-based compound may be 3 to 40 parts by weight, preferably 5 to 35 parts by weight, more preferably 10 to 30 parts by weight, based on 100 parts by weight of the stabilizer, considering the physical properties of the stabilizer. Specifically, when the barium-based compound is less than 3 parts by weight, heat stability may be deteriorated. When the barium-based compound is more than 40 parts by weight, colorability may be deteriorated.

The zinc-based compound can increase the heat stability of the polyvinyl chloride resin, the activity, the initial coloring property, and the like. Specific examples of such zinc-based compounds include zinc benzoate, zinc acetate, zinc borate, zinc bromide, zinc chloride, zinc formate, zinc formate, zinc gluconate, zinc lactate, zinc laurate, zinc malate, zinc nitrate, zinc sulfate, Zinc sulfamate, zinc 4- (1,1-dimethylethyl) benzoate, zinc neodecanoate, zinc tartrate, zinc tartrate and the like, or a mixture of at least one of them.

The content of the zinc-based compound may be 3 to 40 parts by weight, preferably 5 to 35 parts by weight, more preferably 10 to 30 parts by weight, based on 100 parts by weight of the stabilizer, considering the physical properties of the stabilizer. Specifically, when the amount of the zinc-based compound is less than 3 parts by weight, the coloring property may be deteriorated. When the amount is more than 40 parts by weight, the heat stability may be deteriorated.

The zinc-based compound may be included in the same amount as the barium-based compound, or may be contained in a smaller amount than the barium-based compound. When the content of the zinc-based compound exceeds the content of the barium-based compound, the heat-resistant stability may be lowered.

The stabilizer of the present invention may further comprise an antioxidant capable of inhibiting autoxidation of the stabilizer. Specific examples of such an antioxidant include 2,6-di-t-butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, stearyl (3,5-di- (3,5-di-t-butyl-4-hydroxybenzyl) phosphonate, thiodiethylene glycol bis [ (3,5-di-t-butyl-4-hydroxyphenyl) propionate], 1,6-hexamethylenebis [ (6-t-butyl-m-cresol), 2,2'-methylenebis (4-tert- Butylphenol), 2,2'-methylenebis (4-ethyl-6-t-butylphenol), bis [3,3-bis (4-hydroxy- Butylphenol), 2,2'-ethylidenebis (4,6-di-t-butylphenol), 2,2'-ethylidenebis (4-s- , 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane, bis [2 butyl-4-methyl-6- (2-hydroxy-3-t-butyl-5-methylbenzyl) phenyl] terephthalate, 1,3,5- Hydroxybenzyl) -2,4,6-trimethylbenzene, 1,3,5-tris [(3,5-di-t-butyl-4-hydroxyphenyl) propionyloxyethyl] isocyanur (Methylene-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] methane, 2-t- (3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy} -phenol, Ethyl] -2,4,8,10-tetraoxaspiro [5.5] undecane or triethylene glycol bis [(3-t-butyl-4-hydroxy-5-methylphenyl) propionate] have.

The content of the antioxidant may be 1 to 5 parts by weight, based on 100 parts by weight of the stabilizer, considering the physical properties of the stabilizer. Specifically, when the amount of the antioxidant is less than 1 part by weight, the weather resistance may be deteriorated. When the amount is more than 5 parts by weight, the powder may be precipitated.

Such a stabilizer of the present invention may further include a solvent in consideration of viscosity. The content of the solvent may be 20 parts by weight or less based on 100 parts by weight of the stabilizer, considering the viscosity of the stabilizer.

The polyvinyl chloride resin composition according to an embodiment of the present invention includes the stabilizer. Specifically, the polyvinyl chloride resin composition according to an embodiment of the present invention may include a polyvinyl chloride resin, a plasticizer, a processing aid, a lubricant, a pigment, an impact modifier, and a stabilizer.

The polyvinyl chloride (PVC) resin may be a vinyl chloride homopolymer or a copolymer obtained by copolymerizing a vinyl chloride monomer with another monomer. Specific examples of the vinyl chloride-based monomer include a vinyl chloride monomer, a vinylidene chloride monomer, a vinyl acetate monomer, and a mixture thereof. Specific examples of the copolymer include a copolymer of vinyl chloride and vinyl acetate, a copolymer of vinyl chloride and acrylic acid ester, and a copolymer of vinyl chloride and ethylene. Such a polyvinyl chloride resin may have a polymerization degree of 500,000 or less, specifically, a polymerization degree of 500 to 50,000.

The plasticizer increases the firing of the polyvinyl chloride resin. Specific examples thereof include phthalic acid ester-based ones such as di-2-ethylhexyl phthalate, dioctyl phthalate, di-isononyl phthalate and dibutyl phthalate; Phosphoric acid esters such as tricresyl phosphate, triesyl phosphate and triphenyl phosphate; Di-2-ethylhexyl adipate, and di-2-ethylhexyl sebacate; Epoxidized soybean oil, epoxidized linseed oil, epoxidated tetrahydrophthalate, and epoxylated polybutadiene; Or a mixture thereof.

The processing aid can promote gelation or improve fluidity during molding of polyvinyl chloride resin. Specific examples of such processing aids include ethyl acrylate, hydroxyethyl methacrylate, n-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, n-hexyl acrylate, n-hexyl methacrylate, Ethylhexyl acrylate, ethylhexyl methacrylate, n-octyl acrylate, n-octyl methacrylate, decyl acrylate, decyl methacrylate, dodecyl acrylate, dodecyl methacrylate, stearyl acrylate, or Methyl methacrylate resin copolymerized with a monomer having a double bond such as stearyl methacrylate.

The lubricant can increase the fluidity or the mold releasability after polyvinyl chloride resin molding. Specific examples of such lubricants include fatty acid-based compounds such as stearic acid; Fatty acid ester compounds such as butyl ester and octyl stearate; Mixtures of fatty acids and alcohols such as palmityl alcohol, stearyl alcohol and the like; Fatty acid amide compounds such as stearic acid amide and oleic acid amide; Or hydrocarbon compounds such as paraffin and polyethylene wax.

The pigment may be an organic pigment or an inorganic pigment. Specific examples of the organic pigments include azo pigments, phthalocyanine pigments, threne pigments, and dye lake pigments. Specific examples of the inorganic pigments include oxide pigments, molybdenum chromate pigments, and ferrocyanide pigments.

The impact modifier may be at least one selected from the group consisting of acrylate such as methacrylate butadiene styrene (MBS), acrylic, acrylonitrile butadiene styrene (ABS), and the like; Ethylenes such as chlorinated polyethylenes (CPE) and ethene vinylacetate (EVA), which are chlorinated with plasticizers; Inorganic materials coated with calcium carbonate in stearin; Or a mixture thereof.

The stabilizer can improve the heat stability of the polyvinyl chloride resin. The description of these stabilizers is the same as that described above, and thus will be omitted.

A polyvinyl chloride sheet according to an embodiment of the present invention is produced using a polyvinyl chloride resin composition containing the stabilizer. 1, a polyvinyl chloride sheet according to an embodiment of the present invention includes a first sheet layer 100 and a second sheet layer 200. As shown in FIG.

The first sheet layer 100 is formed of a first polyvinyl chloride resin composition. Specifically, the first polyvinyl chloride resin composition comprises 70 to 80 parts by weight of the first polyvinyl chloride resin, 10 to 20 parts by weight of the first plasticizer, 0.3 to 3 parts by weight of the first processing aid, 0.5 to 3 parts by weight of a lubricant, 0.5 to 3 parts by weight of an impact modifier, 1 to 5 parts by weight of a first pigment, and 2 to 5 parts by weight of a stabilizer.

If the first polyvinyl chloride resin is out of the above range, mechanical strength such as tensile strength, tear strength, abrasion strength, etc. may be lowered and workability, heat stability and economy may be deteriorated. If the first plasticizer is out of the above range, the processability and elongation may be lowered or the hardness may be weakened. In addition, when the first processing aid and lubricant are out of the above range, the workability may be lowered, the economical efficiency may be lowered, and the precipitation phenomenon may be caused. When the impact modifier is out of the above range, the effect of the impact modifier may be difficult to obtain or the weather resistance may be deteriorated. In addition, when the first pigment is out of the above range, it may be difficult to obtain a desired color. If the stabilizer is out of the above range, heat stability may be lowered, resulting in discoloration and carbide formation, poor economical efficiency, and precipitation.

The roles and examples of the first polyvinyl chloride resin, the first plasticizer, the first processing aid, the lubricant, the impact modifier, the first pigment, and the stabilizer are described below. The polyvinyl chloride Resins, plasticizers, processing aids, lubricants, impact modifiers, pigments and stabilizers.

In the first sheet layer 100, a decorative pattern may be printed on the surface (specifically, the surface on which the second sheet layer 200 is laminated) so that the polyvinyl chloride sheet can be used as an interior material.

The second sheet layer 200 is laminated on the first sheet layer 100 and is formed of a second polyvinyl chloride resin composition. Specifically, the second polyvinyl chloride resin composition may comprise 70 to 85 parts by weight of the second polyvinyl chloride resin, 10 to 20 parts by weight of the second plasticizer and 1 to 5 parts by weight of the stabilizer based on 100 parts by weight of the total have.

If the second polyvinyl chloride resin is out of the above range, the mechanical strength such as tensile strength, tear strength, abrasion strength and the like may be lowered, and workability, heat stability and economy may be deteriorated. If the second plasticizer is out of the above range, the workability and elongation may be lowered or the hardness may be weakened. If the stabilizer is out of the above range, heat stability may be lowered, resulting in discoloration and carbide formation, poor economical efficiency, and precipitation.

The role of each of the second polyvinyl chloride resin, the second plasticizer and the stabilizer and the description of the exemplary materials are the same as those of the polyvinyl chloride resin, the plasticizer and the stabilizer included in the polyvinyl chloride resin composition, .

Hereinafter, the present invention will be described in detail with reference to examples. However, the following examples are illustrative of the present invention, and the present invention is not limited by the following examples.

[Preparation Example 1] Stabilizer 1

20 parts by weight of barium 2-ethylhexanoate and 10 parts by weight of barium neodecanoate as a barium-based compound, 10 parts by weight of zinc 4- (1,1-dimethylethyl) benzoate as zinc-based compound and 10 parts by weight of zinc neodecanoate 10 parts by weight, and a stabilizer 1 containing 35 parts by weight of triisodecyl phosphite as a compound represented by the formula (1).

[Preparation Example 2] Stabilizer 2

20 parts by weight of barium oleate as a barium compound, 10 parts by weight of zinc benzoate as a zinc compound, 30 parts by weight of triisotridecyl phosphite as a compound represented by the general formula (1), tetrakis (3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate) as a solvent, and distilled water as a solvent.

[Comparative Preparation Example 1]

A phenolic stabilizer (BZ177T, Songwon Industry) was prepared.

[Comparative Preparation Example 2]

A secondary stabilizer (BP275S, Songwon Industry) was prepared.

[Examples 1 and 2 and Comparative Examples 1 and 2]

1) Preparation of first polyvinyl chloride resin composition

A first polyvinyl chloride resin composition having the composition shown in Table 1 below was prepared.

ingredient Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 First polyvinyl chloride resin ^{Note 1 )} 70.50 71.70 70.50 71.70 70.40 71.60 First plasticizer
DINP 12.00 12.20 12.00 12.20 12.00 12.20 EPOXY 0.70 0.70 0.70 0.70 0.70 0.70 First processing aid ^{Note 2 )} 0.40 0.40 0.40 0.40 0.40 0.40 Lubricant ^{Note 3 )} 0.70 0.70 0.70 0.70 0.70 0.70 Impact modifier ^{Note 4 )} 0.70 0.70 0.70 0.70 0.70 0.70 First pigment ^{Note 5)} 1.80 1.80 1.80 1.80 1.80 1.80 Secondary pigment ^{Note 6)} 9.90 10.00 9.90 10.00 9.90 10.00 The stabilizer of Preparation Example 1 0.00 0.00 3.50 1.80 0.00 0.00 The stabilizer of Preparation Example 2 3.50 1.80 0.00 0.00 0.00 0.00 The stabilizer of Comparative Preparation Example 1 0.00 0.00 0.00 0.00 3.40 1.80 The stabilizer of Comparative Preparation Example 2 0.00 0.00 0.00 0.00 0.10 0.10 Total (% by weight) 100 100 100 100 100 100 Note 1): CAS No. Polyvinyl chloride of 9002-86-2
Note 2): CAS No. Methyl methacrylate, butyl acrylate copolymer of 25852-37-3
Note 3): Melting point 105-115 DEG C, acid value 0-12 mg KOH / g, Ca content: 1.40-1.60%
Note 4): BTA-751 Young Jin
Note 5): CAS No. CI Pigment Blue 29 of 57455-37-5 40-60% by weight, CAS No. 40-60 wt% of diisononyl phthalic acid of 68515-48-0,
Note 6): TiO ₂

2) Preparation of second polyvinyl chloride resin composition

A second polyvinyl chloride resin composition having the composition shown in Table 2 below was prepared.

ingredient Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Second polyvinyl chloride resin ^{Note 1 )} 78.8 80.3 78.8 80.3 78.8 80.3 Second plasticizer
DINP 16.5 16.9 16.5 16.9 16.5 16.9 EPOXY 0.8 0.8 0.8 0.8 0.8 0.8 The stabilizer of Preparation Example 1 0.0 0.0 3.9 2.0 0.0 0.0 The stabilizer of Preparation Example 2 3.9 2.0 0.0 0.0 0.0 0.0 The stabilizer of Comparative Preparation Example 1 0.0 0.0 0.0 0.0 3.9 2.0 Total (% by weight) 100 100 100 100 100 100 Note 1): CAS No. Polyvinyl chloride of 9002-86-2

[Production Examples 1 to 4 and Comparative Production Examples 1 and 2]

Using the first polyvinyl chloride resin composition and the second polyvinyl chloride resin composition of each of the above examples and comparative examples, the respective compositions were put into a calendering process to prepare a first sheet and a second sheet, respectively. Next, a neck pattern was printed on the produced first sheet in a gravure manner. Next, the second sheet was laminated on the first sheet on which the wood pattern was printed, and then joined to produce polyvinyl chloride sheets of Production Examples 1 to 4 and Comparative Production Examples 1 and 2, respectively.

[Experimental Example]

The physical properties of each polyvinyl chloride sheet thus prepared were evaluated by the following methods, and the results are shown in Table 3 below.

1. Processability: For each of the first sheet and the second sheet, the flowability of the composition put into the test roll, the appearance of the sheet produced, and the like were confirmed.

2. Heat resistance

Static heat resistance: For each of the manufactured first sheet and second sheet, each sheet was placed in an oven at 180 캜 for 5 minutes to check discoloration degree of the sheet.

- Dynamic heat resistance: For each of the first sheet and the second sheet produced, each sheet was put in a test roll and the degree of discoloration of the composition was checked every 5 minutes.

3. TVOC measurement: The final product was measured using the small chamber method (unit: 0.02 mg / ㎡.h).

4. Measurement of phenol component: The final product was measured by applying gas chromatography (G / C).

5. Transparency: For the second sheet, the transparency was evaluated by measuring the total transmittance according to ASTM D 1003.

Properties Production Example 1 Production Example 2 Production Example 3 Production Example 4 Comparative Preparation Example 1 Comparative Production Example 2 The first sheet Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 The second sheet Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Processability Good Good Good Good Good Lowering Heat resistance Good Good Good Good Good Lowering TVOC measurement Within 0.1 Within 0.1 Within 0.1 Within 0.1 0.1 or more 0.1 or more Phenol component measurement Not detected Not detected Not detected Not detected detection detection Transparency (light transmittance) 88.8% 88.7% 88.9% 88.7% 88.6% 88.6%

Referring to Table 3, it can be seen that the polyvinyl chloride sheet of the present invention is excellent in processability, heat resistance, transparency, etc., and at the same time, the TVOC value is low and phenol is not detected, so that it is eco-friendly and safe from harmful substances.

100: first sheet layer
200: second sheet layer

Claims (9)

A compound represented by Formula 1 below;
Barium compounds;
Zinc compounds; And
A stabilizer comprising an antioxidant.
[Chemical Formula 1]
(RO) ₃ P
In the above formula (1), R is a C ₁ to C ₂₅ aliphatic group. The method according to claim 1,
Wherein said R is a C ₈ to C ₁₅ aliphatic group. The method according to claim 1,
The compound represented by the formula (1) is obtained by the reaction of a compound represented by the following formula (2) with an alcohol.
(2)
P (X) ₃
In Formula 2, X is halogen. The method according to claim 1,
The barium-based compound may be selected from the group consisting of barium oleate, barium benzoate, barium octanoate, barium octylate, barium formate, barium citrate ( barium citrate, barium acetate, barium oxalate, barium 2-ethylhexanoate, barium neodecanoate and barium tartrate. ≪ / RTI > The method according to claim 1,
The zinc-based compound may be selected from the group consisting of zinc benzoate, zinc acetate, zinc borate, zinc bromide, zinc chloride, zinc formate, zinc Zinc gluconate, zinc lactate, zinc laurate, zinc malate, zinc nitrate, zinc sulfate, zinc sulfamate zinc sulfamate, zinc sulfamate, zinc 4- (1,1-dimethylethyl) benzoate, zinc neodecanoate and zinc tartrate. Wherein the stabilizer is at least one selected from the group consisting of A polyvinyl chloride resin composition comprising the stabilizer of any one of claims 1 to 5. A first sheet layer formed of a first polyvinyl chloride resin composition; And
A second sheet layer formed on the first sheet layer and formed of a second polyvinyl chloride resin composition,
Wherein at least one of the first polyvinyl chloride resin composition and the second polyvinyl chloride resin composition comprises the stabilizer of any one of claims 1 to 5. The method of claim 7,
The first polyvinyl chloride resin composition may contain,
70 to 80 parts by weight of a first polyvinyl chloride resin;
10 to 20 parts by weight of a first plasticizer;
0.3 to 3 parts by weight of the first processing aid;
0.5 to 3 parts by weight of lubricant;
0.5 to 3 parts by weight of an impact modifier;
1 to 5 parts by weight of a first pigment; And
And 2 to 5 parts by weight of the stabilizer. The method of claim 7,
Wherein the second polyvinyl chloride resin composition comprises:
70 to 85 parts by weight of a second polyvinyl chloride resin;
10 to 20 parts by weight of a second plasticizer; And
And 1 to 5 parts by weight of the stabilizer.

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