JPH11130893A - Foaming vinyl chloride resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition that has a low viscosity and can provide molded products having good foam cell and particle states by admixing a polyhydric hydroxy-fatty acid ester to the composition. SOLUTION: The objective composition includes a polyhydric alcohol- condensed hydroxyfatty acid ester. This composition comprises (A) 100 pts.wt. of vinyl chloride resin, (B) 50-250 pts.wt. of filler, (C) 30-100 pts.wt. of plasticizer, (D) 0.01-5 pts.wt. of polyhydroxy alcohol-condensed hydroxyfatty acid ester, and (E) 0.05-10 pts.wt. of foaming agent. The component D to be added to the composition is an ester prepared by reaction of condensed hydroxyfatty acid (preferably a condensate between ricinoleic acid and 12-hydroxystearic acid with a polyhydric alcohol, preferably polyglycerol, pentaerythritol. Thus, the viscosity is fairly reduce, and molded products having good foam cell distribution and good particle sizes are obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foamable vinyl chloride resin composition, and more particularly, to a foamed foam having a low viscosity, a good foam cell and a molded product having a uniform particle diameter. The present invention relates to a water-soluble vinyl chloride resin composition.

[0002]

2. Description of the Related Art Vinyl chloride resins are excellent in mechanical properties such as rigidity and tensile properties, chemical resistance, oil resistance and the like, and are used in a very wide range of applications. For example, foamed resin products obtained by adding a foaming agent to a vinyl chloride resin and imparting functions such as a heat insulating function, a shock absorbing function, and a lightweight function are used for leather, wallpaper, cushioning materials, flooring materials, and the like. . Further, it is general to add a large amount of filler for the purpose of cost reduction and improvement of rigidity. The problem here is that when compounding a large amount of filler into the vinyl chloride resin, the compounded product becomes highly viscous and the workability becomes difficult, and the molding processability is poor, and the foam cell state is rough, A molded article having a non-uniform particle diameter may occur, and improvement in these points has been demanded for practical use. For example, as a means for lowering the viscosity, a method of adding a large amount of a plasticizer has been proposed, but it cannot improve the roughness of the foamed cell. In order to obtain a good foamed cell state, a method of adding a cell regulator such as an acrylic resin or a methacrylic ester resin has been proposed, but the viscosity cannot be reduced. Also, a method of blending a polyester compound derived from a hydroxycarboxylic acid (Japanese Patent Laid-Open No. 63-179939) has been proposed, and a molded article having a relatively good viscosity lowering ability, a foamed cell state, and a particle diameter has been proposed. It can be obtained, but not fully satisfactory.

[0003]

SUMMARY OF THE INVENTION According to the present invention, the foamable vinyl chloride resin composition has a lower viscosity than the conventional composition, and the molded product has good foam cell state and particle size state. Thus, a foamable vinyl chloride resin composition is provided.

[0004]

Means for Solving the Problems In view of such circumstances, the present inventors have conducted intensive studies and as a result, have found that a foamable vinyl chloride resin composition containing a polyvalent hydroxy fatty acid ester has a low viscosity, and The present inventors have found that the foamed cell state and the particle diameter state of the molded product are good, and completed the present invention.
Hereinafter, the foamable vinyl chloride resin composition of the present invention will be described.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION

(1) Polyhydric alcohol condensed hydroxy fatty acid ester The polyhydric alcohol condensed hydroxy fatty acid ester used in the present invention is an ester obtained by reacting a condensed hydroxy fatty acid with a polyhydric alcohol. (1-1) Polyhydric alcohol Specific examples of the polyhydric alcohol which is a component of the polyhydric alcohol condensed hydroxy fatty acid ester used in the present invention include, for example, alkane polyols such as pentaerythritol and glycerin, and sucrose. Sugars, sorbitol, sugar derivatives represented by sugar alcohols such as mannitol, pentaglycerin, hexaglycerin, polyglycerin such as decaglycerin and dipentaerythritol, and polyalkane polyols represented by tripentaerythritol, and the like. Or a mixture of two or more of the above. Among the polyhydric alcohols, polyglycerin and pentaerythritol are preferable, and particularly, polyglycerin having a polymerization degree of 4 to 8, more preferably 4 to 8, is preferable.

(1-2) Condensed Hydroxy Fatty Acid The condensed hydroxy fatty acid, which is the other component of the polyhydric alcohol condensed hydroxy fatty acid ester used in the present invention, is a condensate of a hydroxy fatty acid. A hydroxy fatty acid is a fatty acid having one or more hydroxyl groups in a molecule, and specifically, for example, ricinoleic acid,
12-hydroxystearic acid, hydrogenated castor oil fatty acid (fatty acid containing a small amount of stearic acid and palmitic acid in addition to 12-hydroxystearic acid), sabinic acid, 2-hydroxytetradecanoic acid, iprolic acid,
-Hydroxyhexadecanoic acid, yarapinolic acid, unidiphosphoric acid, ambrettolic acid, alluritic acid, 2-
Hydroxyoctadecanoic acid, 18-hydroxyoctadecanoic acid, 9,10-dihydroxyoctadecanoic acid, camlorenic acid, ferronic acid, cerebronic acid, 9-hydroxystearic acid, 10-hydroxystearic acid, etc., and one or more of these. Used as a mixture of Among the hydroxy fatty acids, those having 8 to 22 carbon atoms are preferable, and those having 12 to 20 carbon atoms are more preferable.
Among them, ricinoleic acid, 12-hydroxystearic acid, 9-hydroxystearic acid, 10hydroxystearic acid, and hydrogenated castor oil fatty acid are preferred, and ricinoleic acid and 12-hydroxystearic acid are particularly preferred.

When the hydroxy fatty acid is a mixture of a plurality of fatty acids, the average molecular weight of the fatty acid is the average molecular weight calculated from the mixing ratio of each molecular weight. For example, an average molecular weight of a mixed fatty acid composed of 50% by weight of 12-hydroxystearic acid (molecular weight = 298), 30% by weight of ricinoleic acid (molecular weight = 300), and 20% by weight of stearic acid (molecular weight = 284) is 295.8, and the acid is 295.8. The price was determined. The acid value of the condensed hydroxy fatty acid is preferably in the range of 10 to 100, more preferably 20 to 50. The condensation degree of the condensed hydroxy fatty acid used in the polyhydric alcohol condensed hydroxy fatty acid ester of the present invention is usually greater than 1, preferably 3 or more, more preferably 3.5 to 7. The degree of condensation in the present invention is determined by the following equation (1). (Condensation degree) = (acid value of fatty acid) / (acid value of fatty acid after condensation) (1) Here, the acid value is potassium hydroxide required to neutralize the fatty acid (chemical formula is KOH, (The molecular weight is 56.11) and is obtained by the following formula (2). (Acid value) = [KOH] / [fatty acid] × 1000 (2) where [KOH]: molecular weight of potassium hydroxide (= 5
6.11) [fatty acid]: average molecular weight of fatty acid

(1-3) Method for Producing Polyhydric Alcohol Condensed Hydroxy Fatty Acid Ester The polyhydric alcohol condensed hydroxy fatty acid ester of the present invention can be prepared from
100 ° C with or without a catalyst such as caustic soda
It is obtained by heating at 300 ° C., preferably in the range of 120 ° C. to 250 ° C., and removing generated water out of the system. The reaction is preferably performed in the presence of an inert gas. Further, it may be performed in an azeotropic solvent such as toluene or xylene. The degree of progress of these reactions can be confirmed by measuring the amount of generated water and the acid value of the reaction product. Specific examples of the polyhydric alcohol condensed hydroxy fatty acid ester thus synthesized include polyglycerin condensed hydroxy fatty acid ester, pentaerythritol condensed hydroxy fatty acid ester, dipentaerythritol condensed hydroxy fatty acid ester, and tripentaerythritol condensed hydroxy fatty acid ester , Sucrose condensed hydroxy fatty acid esters, mannitol condensed fatty acid esters, and the like. More specifically, tetraglycerin condensed ricinoleate, tetraglycerin condensed 12-hydroxystearate, hexaglycerin condensed ricinoleate, hexaglycerin condensed 12- Hydroxystearic acid ester, octaglycerin condensed ricinoleate, octaglycerin condensed 12-hydroxy Stearic acid ester, decaglycerin condensed ricinoleate, decaglycerin condensed 12-hydroxystearate, pentaerythritol condensed ricinoleate, pentaerythritol condensed 12-hydroxystearate, dipentaerythritol condensed ricinoleate, dipentaerythritol condensate Examples thereof include 12-hydroxystearic acid ester, tripentaerythritol condensed ricinoleic acid ester, and tripentaerythritol condensed 12-hydroxystearic acid ester, which are used as one kind or as a mixture of two or more kinds. Among them, esters of condensed ricinoleic acid or condensed 12-hydroxystearic acid and a polyglycerin having a degree of polymerization of 2 to 10 are preferable, tetraglycerin condensed ricinoleate, tetraglycerin condensed 12-hydroxystearate, and hexaglycerin condensed ricinoleate. Hexaglycerin condensed 12-hydroxystearate, octaglycerin condensed ricinoleate, octaglycerin condensed 12-hydroxystearate, decaglycerin condensed ricinoleate, decaglycerin condensed 12-hydroxystearate and the like. . The acid value of the polyhydric alcohol condensed hydroxy fatty acid ester in the present invention is 10 or less, preferably 5 or less.

(2) Foamable vinyl chloride resin composition The foamable vinyl chloride resin composition of the present invention is not particularly limited, but is usually 50 parts by weight based on 100 parts by weight of the vinyl chloride resin. ~ 250 parts by weight of filler, 30 ~ 1
The foamable vinyl chloride resin composition has a mixing ratio of 00 parts by weight of a plasticizer, 0.01 to 5 parts by weight of a polyhydric alcohol condensed hydroxy fatty acid ester, and 0.05 to 10 parts by weight of a blowing agent. (2-1) Vinyl chloride resin As the vinyl chloride resin used in the present invention, polyvinyl chloride or a vinyl chloride copolymer having a number average degree of polymerization in the range of about 600 to about 1800 (eg, chloride) Vinyl vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-ethylene-vinyl acetate copolymer), vinyl chloride graft copolymer (eg, grafting vinyl chloride onto ethylene-propylene copolymer, etc.) (Polymerized vinyl chloride graft copolymer).

(2-2) Filler The filler used in the present invention includes calcium carbonate, aluminum hydroxide, titanium oxide, talc, silica, calcium sulfate, calcium hydroxide, magnesium hydroxide,
Kaolin, clay, mica, alumina, magnesium carbonate, asbestos and the like can be mentioned, and one or more of these can be used as a mixture. (2-3) Plasticizer Examples of the plasticizer used in the present invention include dibutyl phthalate, di-n-octyl phthalate, di-2-ethylhexyl phthalate, diisodecyl phthalate, diisononyl phthalate, diundecyl phthalate, and trioctyl trilate. Melitate, alkyl esters of aromatic polybasic acids such as triisooctyl trimellitate, dibutyl adipate, dioctyl adipate, diisononyl adipate, dibutyl azelate, dioctyl azelate,
Alkyl esters of aliphatic polybasic acids such as diisononyl azelate, phosphate esters such as tricresyl phosphate, trixylenyl phosphate, adipic acid, azelaic acid, sebacic acid, polycarboxylic acids such as phthalic acid and ethylene glycol, 1,2-propylene glycol,
1,2-butylene glycol, 1,3-butylene glycol, the end of a polycondensate with a polyhydric alcohol such as 1,4-butylene glycol having a molecular weight of about 600 to 8000,
Polyester plasticizers such as those blocked with a monohydric alcohol or monocarboxylic acid, epoxidized soybean oil, epoxidized linseed oil, epoxidized tall oil fatty acid-2-ethylhexyl and other epoxy plasticizers, chlorinated paraffin, etc. And one or more of these can be used as a mixture. Of these, dibutyl phthalate, di-n-octyl phthalate, di-2-ethylhexyl phthalate, diisodecyl phthalate, diisononyl phthalate and diundecyl phthalate are preferred.

(2-4) Foaming Agent The foaming agent used in the present invention is not particularly limited, but a thermal decomposition type organic foaming agent is generally used. For example, azo compounds (eg, azodicarbonamide, azobisformamide, azobisisobutyronitrile, barium azodicarboxylate), nitroso compounds (eg, N,
N'-dinitrosopentamethylenetetramine, N, N '
-Dinitroso-N, N'-dimethylterephthalamide), sulfonyl hydrazide compound (eg: benzenesulfonyl hydrazide, p-toluenesulfonyl hydrazide, p, p'-oxybisbenzenesulfonyl hydrazide), sulfonyl semicarbazide compound (Example:
p-toluenesulfonyl semicarbazide) and the like. Here, azo compounds are preferred, and azodicarbonamides are more preferred. Use of an inorganic foaming agent such as sodium bicarbonate does not pose any problem.

(3) Other compounding agents In order to further impart desired properties to the composition of the present invention according to the purpose, a known substance generally added to a vinyl chloride resin, that is, an antioxidant, a heat-stable substance, Agents, lubricants, release agents, coloring agents, flame retardants, antistatic agents, light stabilizers, antifoggants,
Light-blocking agents, flameproofing agents, reinforcing agents, pigments, dyes, processing aids,
It is of course possible to incorporate an impact modifier and other inorganic or organic fillers.

[0013]

EXAMPLES The present invention will be further described with reference to examples and comparative examples, but the present invention is not limited to these examples. Production Example 1 (Production example of polyhydric alcohol condensed hydroxy fatty acid ester) 12-hydroxystearic acid (molecular weight = 300, acid value = 187.0) was placed in a 1-liter four-necked flask.
0 g and 0.5 g of p-toluenesulfonic acid were added and reacted at 180 ° C. for 15 hours while removing generated water under a nitrogen stream to obtain 475 g of condensed 12-hydroxystearic acid. The acid value of the product was 45.5, and it was confirmed that the product was esterified. Its condensation degree was 4.1. (The degree of condensation is, as described above, [acid value of fatty acid] /
From the formula of [acid value of fatty acid after condensation], 187.0 / 4
5.5 = 4.1). Next, 400 g of the obtained condensed 12-hydroxystearic acid (acid value = 45.5, degree of condensation = 4.1) and 30 g of hexaglycerin were mixed, and reacted at 190 ° C. for 10 hours while removing generated water under a nitrogen stream. Thus, 412 g of the polyhydric alcohol condensed hydroxy fatty acid ester of the present invention was obtained. Its acid value is 4.3
And it was confirmed that it was esterified.

Production Example 2 (Production Example of Polyhydric Alcohol Condensed Hydroxy Fatty Acid Ester) To a 1 liter four-necked flask was added 500 g of ricinoleic acid (molecular weight = 298, acid value = 188.3), and
The mixture was reacted at 200 ° C. for 6 hours while removing generated water under a nitrogen stream to obtain 480 g of condensed ricinoleic acid. This product had an acid value of 40.5, and it was confirmed that the product was esterified. Its condensation degree was 4.6. (The degree of condensation is calculated as 188.3 / 40.5 = 4.6 from the formula of [acid value of fatty acid] / [acid value of fatty acid after condensation], as described above). Next, 400 g of the obtained condensed ricinoleic acid (acid value = 40.5, degree of condensation = 4.6) and 50 g of decaglycerin were mixed, and reacted at 190 ° C. for 15 hours while removing generated water under a nitrogen stream to remove the mixture. 425 g of the polyhydric alcohol condensed hydroxy fatty acid ester of the invention was obtained. The acid value of the product was 3.8, and it was confirmed that the product was esterified.

Production Example 3 (Production Example of Polyhydric Alcohol Condensed Hydroxy Fatty Acid Ester) In a 1-liter four-necked flask, 500 g of ricinoleic acid (molecular weight = 298, acid value = 188.3) and 0.5 g of caustic soda were added. The reaction was carried out at 190 ° C. for 12 hours while removing the produced water under a nitrogen stream to condense ricinoleic acid 46
3 g were obtained. This product had an acid value of 40.2, and it was confirmed that the product was esterified. The condensation degree of this product was 4.7. (As described above, the degree of condensation is calculated based on the formula of [acid value of fatty acid] / [acid value of fatty acid after condensation].
3 / 40.2 = 4.7). Next, the obtained condensed ricinoleic acid (acid value = 40.2, degree of condensation = 4.
7) 400 g and tetraglycerin 20 g were mixed and reacted at 190 ° C. for 7 hours while removing generated water under a nitrogen stream to obtain 398 g of the polyhydric alcohol condensed hydroxy fatty acid ester of the present invention. It was confirmed that the product had an acid value of 1.4 and was esterified.

Production Example 4 (Production Example of Polyhydric Alcohol Condensed Hydroxy Fatty Acid Ester) 500 g of ricinoleic acid (molecular weight = 298, acid value = 188.3) was added to a 1 liter four-necked flask.
The mixture was reacted at 200 ° C. for 6 hours while removing generated water under a nitrogen stream to obtain 480 g of condensed ricinoleic acid. This product had an acid value of 40.5, and it was confirmed that the product was esterified. Its condensation degree was 4.6. (The degree of condensation is calculated as 188.3 / 40.5 = 4.6 from the formula of [acid value of fatty acid] / [acid value of fatty acid after condensation], as described above). Next, 400 g of the obtained condensed ricinoleic acid (acid value = 40.5, degree of condensation = 4.6) and 30 g of hexaglycerin were mixed, and reacted at 190 ° C. for 10 hours while removing generated water under a nitrogen stream to obtain a main product. 412 g of the polyhydric alcohol condensed hydroxy fatty acid ester of the invention was obtained. The acid value of the product was 4.1, and it was confirmed that the product was esterified.

Production Example 5 (Production Example of Polyhydric Alcohol Condensed Hydroxy Fatty Acid Ester) To a 1-liter four-necked flask, 500 g of ricinoleic acid (molecular weight = 298, acid value = 188.3) was added.
The mixture was reacted at 200 ° C. for 6 hours while removing generated water under a nitrogen stream to obtain 480 g of condensed ricinoleic acid. This product had an acid value of 40.5, and it was confirmed that the product was esterified. Its condensation degree was 4.6. (The degree of condensation is calculated as 188.3 / 40.5 = 4.6 from the formula of [acid value of fatty acid] / [acid value of fatty acid after condensation], as described above). Next, 400 g of the obtained condensed ricinoleic acid (acid value = 40.5, degree of condensation = 4.6) and 30 g of tetraglycerin were mixed, and reacted at 190 ° C. for 15 hours while removing generated water in a nitrogen stream to remove the mixture. 425 g of the polyhydric alcohol condensed hydroxy fatty acid ester of the invention was obtained. The acid value of the product was 3.8, and it was confirmed that the product was esterified. Table 1 summarizes the polyhydric alcohol condensed hydroxy fatty acid esters of Production Examples 1 to 5.

[0018]

[Table 1]

The evaluation items and evaluation methods in the examples and comparative examples of the present invention are as follows. Example 1 The following formulation containing the additives (polyhydric alcohol condensed hydroxy fatty acid ester) of Production Examples 1 to 5 shown in Table 1 was mixed with Robomix (manufactured by Tokushu Kika Kogyo Co., Ltd.) for 10 minutes.
After mixing for a minute, a uniform paste PVC resin was produced. The viscosity at that time was measured with a B-type viscometer (manufactured by Tokyo Keiki Co., Ltd.). Table 2 shows the results. After the paste PVC resin was left for 24 hours, it was poured uniformly into an aluminum foil mold and heated at 220 ° C. for 10 minutes with a drier. The state of the foamed cells and the state of the particle diameter of the obtained test piece were visually observed. Table 3 shows the results.

[0020]

[Table 2]

[0021]

[Table 3]

Formulation: Vinyl chloride resin (ZEST PASTE, manufactured by Shin Daiichi PVC Co., Ltd.) 100 Plasticizer DOP (Vinicizer 80K, manufactured by Kao Corporation) 50 Calcium carbonate (NS-100 manufactured by Nitto Powder Co., Ltd.) 100 Ba / Zn composite stabilizer (KV-69u-4 manufactured by Kyodo Yakuhin Co., Ltd.) 3 Stabilizing aid (epoxidized soybean oil manufactured by Kyodo Yakuhin Co., Ltd.) 2 Blowing agent (azodicarbonamide Wako Pure Chemical Industries, Ltd.) 2 Additive (Table 1) 1 Judgment criteria: ◎ ○ △ × Expanded cell state Good <−−−−−−−−−−−−−−−−> Not good Particle size state Small <−−−−−− Comparative Example 1 As a comparative example, a polyester of 12-hydroxy fatty acid was used as an additive and evaluated in the same manner as in Example 1. The results are shown in Tables 2 and 3. The embodiments of the present invention and the target adult are as follows.

(1) A foamable vinyl chloride resin composition containing a polyhydric alcohol condensed hydroxy fatty acid ester. (2) The foamable vinyl chloride resin composition according to the above (1) is used in an amount of 50 to 2 based on 100 parts by weight of the vinyl chloride resin.
An expandable vinyl chloride resin composition comprising 50 parts by weight of a filler. (3) The polyhydric alcohol of the polyhydric alcohol condensed hydroxy fatty acid ester is one or a mixture of two or more selected from alkane polyols, saccharides, sugar derivatives, polyglycerin and polyalkane polyols.
(2) The foamable vinyl chloride resin composition according to any of the above. (4) Condensed hydroxy fatty acid of polyhydric alcohol condensed hydroxy fatty acid ester is ricinoleic acid, 12-hydroxystearic acid, hydrogenated castor oil fatty acid (fatty acid containing a small amount of stearic acid and palmitic acid in addition to 12-hydroxystearic acid) , Sabininic acid, 2-hydroxytetradecanoic acid, iprolic acid, 2-hydroxyhexadecanoic acid, yarapinolic acid, unidiphosphoric acid, ambrettolic acid, alluritic acid, 2-hydroxyoctadecanoic acid, 18-hydroxyoctadecanoic acid, 9,
1 selected from the group consisting of 10-dihydroxyoctadecanoic acid, camlorenic acid, ferronic acid, cerebronic acid, 9-hydroxystearic acid, and 10-hydroxystearic acid
(1) to (4) which are a condensate of at least one kind or a mixture thereof;
(3) The foamable vinyl chloride resin composition according to any one of (1) to (4).

(5) The foamable vinyl chloride resin composition contains 50 to 250 parts by weight of a filler, 30 to 100 parts by weight of a plasticizer, 0.01 to 100 parts by weight of the vinyl chloride resin.
The foamable vinyl chloride resin composition according to any one of the above (1) to (4), which is a compounding ratio of from 5 to 5 parts by weight of a polyhydric alcohol condensed hydroxy fatty acid ester and from 0.05 to 10 parts by weight of a foaming agent. (6) The vinyl chloride resin has a number average polymerization degree of 600 to 1
1 selected from the group consisting of polyvinyl chloride, vinyl chloride-based copolymer, and vinyl chloride-based graft copolymer in the range of 800
The foamable vinyl chloride resin composition according to any one of (1) to (5), which is at least one kind. (7) The filler is calcium carbonate, aluminum hydroxide,
Titanium oxide, talc, silica, calcium sulfate, calcium hydroxide, magnesium hydroxide, kaolin, clay,
(1) which is at least one selected from the group consisting of mica, alumina, magnesium carbonate, and asbestos, or a mixture thereof;
(6) The foamable vinyl chloride resin composition according to any one of (1) to (5).

(8) The plasticizer is an alkyl ester of an aromatic polybasic acid, an alkyl ester of an aliphatic polybasic acid, or a polycarboxylic acid and a polyhydric alcohol having a molecular weight of 600 to 8,000.
Wherein the terminal of the polycondensate is a polyester-based plasticizer, an epoxy-based plasticizer, or a chlorinated paraffin obtained by blocking a terminal with a monohydric alcohol or a monovalent carboxylic acid, and one or a mixture of two or more kinds. (7) The foamable vinyl chloride resin composition according to any one of (1) to (7). (9) The foamable vinyl chloride resin composition according to any one of (1) to (8), wherein the foaming agent is an azo compound, a nitroso compound, a sulfonyl hydrazide compound, or a sulfonyl semicarbazide compound. (10) The above (1) to wherein the foaming agent is sodium bicarbonate.
(8) The foamable vinyl chloride resin composition according to any one of the above.

[0026]

The present invention relates to a foamable vinyl chloride resin composition, more specifically, a polyhydric alcohol condensed hydroxy fatty acid ester added to a composition obtained by blending a filler, a plasticizer and a foaming agent with a vinyl chloride resin. By blending, a foamable vinyl chloride resin composition having low viscosity and good foam cell state and particle diameter state could be obtained.

Claims (2)

[Claims] 1. A foamable vinyl chloride resin composition comprising a polyhydric alcohol condensed hydroxy fatty acid ester. 2. The foamable vinyl chloride resin composition according to claim 1, wherein the foamable vinyl chloride resin composition is added to 100 parts by weight of the vinyl chloride resin.
A foamable vinyl chloride-based resin composition comprising 0 to 250 parts by weight of a filler.