JPH07166017A - Vinyl chloride resin composition for powder molding - Google Patents

Abstract

PURPOSE:To provide a powder composition excellent in heat resistance and molding properties such as gelling properties, demoldability and mold deposition resistance. CONSTITUTION:100 pts.wt. vinyl chloride resin is mixed with 0.01-10 pts.wt. at least one member selected from among a hydrotalcite compound and alkali and alkaline earth metal aluminosilicates having a zeolite crystal structure, 0.01-10 pts.wt. at least one member selected from among hydroxides of metals and 0.01-10 pts.wt. ammonium perchlorate.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a vinyl chloride resin composition for powder molding, and more particularly to a vinyl chloride resin composition for powder rotary molding or powder slush molding suitable for automobile interior materials.

[0002]

2. Description of the Related Art In recent years,
As a covering material for automobile interior materials such as crash pads, armrests, headrests, consoles, meter covers, door trims, etc., those that are light and have a soft feeling and have a high-class leather grain pattern or stitch pattern. Is being asked for more.

Conventionally, as these covering materials, a vacuum-molded product of a soft sheet mainly composed of vinyl chloride resin and ABS resin, or a rotational molding or slush of sol mainly composed of vinyl chloride resin for paste and a plasticizer. Molded products (hereinafter referred to as "sol molded products") have been used.
However, although the vacuum-molded product has achieved its purpose in terms of weight reduction, it does not have a soft feeling and only a hard feeling can be obtained.Furthermore, a high-class leather grain pattern or stitch pattern is applied. It has been difficult to shape such a complex shaped article. Further, the vacuum-molded product has a large residual strain at the time of molding, and has a drawback that the molded product is likely to crack when used for a long time.

On the other hand, the sol-molded product has a soft feeling, but its gelling temperature is low, so that it melts quickly in the metal, and phenomena such as flow marks, lips or stringing of the sol occur, resulting in a smooth surface. It has drawbacks such as lack of properties, it takes too long to discharge the sol from the mold, and the thickness of the covering material becomes thick. Further, in the case of sol molding, it is difficult to clean the tank and piping when changing colors, and there is a problem that it cannot withstand long-term storage because the viscosity changes with time. .

As a method for solving these drawbacks and problems, a powder molding method has recently been in the limelight. This powder molding method generally includes a fluidized-bed immersion method, an electrostatic coating method, a powder spraying method, a powder rotational molding method, a powder slush molding method, and the like. Alternatively, the powder slush molding method is suitable.

In the powder rotation molding method or the powder slush molding method, a mold at a temperature of 180 ° C. or higher is integrated with a powder supply box and rotated or rocked or jetted to weld the powder to the inner surface of the mold. Then, the unfused powder is automatically or forcibly recovered in the powder supply box.

As a method for heating a die used for such a powder molded article, there are a gas heating furnace method, a heat medium oil circulation method, a dipping method in heat medium oil or heat fluidized sand, a high frequency induction heating method and the like.

The powder composition used in the above-mentioned powder molding method has excellent thermal stability as well as rapid gelation in a mold because the processing method can complete processing in a short time due to high temperature. And has excellent demoldability,
It is required that the mold contamination is small.

JP-A-58-122951 proposes to add a perchlorate, an organic acid salt and a hydrotalcite compound to a chlorine-containing resin.
Japanese Patent No. 34042 proposes to add a zinc salt of an organic acid, a zeolite and a metal salt of halogenoxygen acid to a chlorine-containing resin, and Japanese Patent Application Laid-Open No. 60-94440 discloses a reaction product of aluminum hydroxide and perchloric acid. JP-A-63-132953 proposes to add hydrotalcite and calcium oxide together to a powder composition for powder molding. 62-270645, JP-A-64-6515.
In JP-A-7-359949, it is proposed to add a perchloric acid-treated product of hydrotalcite to vinyl chloride resin for powder molding, and in JP-A-4-359949, a vinyl chloride resin for powder molding is proposed. It has been proposed to add hydrotalcite or zeolite, calcium oxide and a halogen oxyacid salt or a metal salt thereof, but these combinations have not been able to solve the above situation.

Under these circumstances, the thermal stability is excellent and
It has been desired to provide a powder composition having excellent moldability such as gelling property, demolding property and mold staining property.

Therefore, an object of the present invention is to provide a powder composition which is excellent in thermal stability and is excellent in moldability such as gelling property, mold release property and mold stain property.

[0012]

Means for Solving the Problems As a result of intensive studies, the present inventors have used a vinyl chloride resin in combination with a hydrotalcite compound or a specific zeolite compound, a metal hydroxide and ammonium perchlorate. We have found that the vinyl chloride resin composition added can achieve the above object, and completed the present invention.

That is, the present invention is based on the vinyl chloride resin 100.
0.01 to 10 parts by weight of at least one selected from the group consisting of (a) a hydrotalcite compound, and an alkali and alkaline earth metal aluminosilicate having a zeolite crystal structure, and (b) a metal hydroxide. 0.01 to 10 parts by weight of at least one selected from the above and (c) ammonium perchlorate from 0.001 to 1
The present invention provides a vinyl chloride resin composition for powder molding, which is obtained by adding 0 part by weight.

The vinyl chloride resin composition for powder molding of the present invention will be described in detail below.

The vinyl chloride resin used in the present invention is a vinyl chloride polymer produced by a suspension polymerization method, a bulk polymerization method or an emulsion polymerization method, or ethylene, propylene, vinyl acetate or the like which can be copolymerized with vinyl chloride. However, the present invention is not limited to these, but it is a copolymer of ethylene, a vinyl acetate copolymer, and a vinyl chloride graft copolymer, or a mixture of two or more of these polymers.

The hydrotalcite compound which is one of the components (a) used in the present invention is usually a double salt compound consisting of magnesium (and zinc) and aluminum represented by the following general formula (I). To be

Mg _X1 Zn _X2 Al ₂ (OH) _{2 (X1 + X2) + 4} · CO ₃ · mH ₂ O (I) (wherein, X1 and X2 are numbers satisfying the conditions represented by the following formulas, respectively) And m is a real number, 0 ≦ X2 / X1 <10, 2
≤X1 + X2 <20)

The hydrotalcite compound may be a natural product or a synthetic product. As a method for synthesizing the synthetic product, Japanese Patent Publication No. 46-2280, Japanese Patent Publication No. 50-30039, and Japanese Patent Publication No. 51-29129.
The publicly known methods described in JP-A No. 61-174270 and JP-A No. 61-174270 can be exemplified. Further, in the present invention, the hydrotalcite compound can be used without being limited by the crystal structure, crystal particle size, presence or absence of crystal water, and the amount thereof.

On the surface of the hydrotalcite compound, higher fatty acid such as stearic acid, higher fatty acid metal salt such as alkali metal oleate, organic sulfonic acid metal salt such as alkali metal dodecylbenzene sulfonate, higher fatty acid amide Those coated with higher fatty acid ester or wax can also be used.

The aluminosilicate of an alkali or alkaline earth metal having a zeolite crystal structure, which is one of the components (a) used in the present invention (hereinafter referred to as "zeolite compound"), has a unique three-dimensional structure. It has a zeolite crystal structure, and typical examples of the zeolite compound include A-type, X-type, Y-type and P-type zeolites, monodenite, analsite, sodalite group aluminosilicates, clinobuchirolite, and erionite. And chabazite, and the like, which may be either a water-containing substance having crystal water of these zeolite compounds (so-called zeolite water) or an anhydrous substance from which crystal water is removed,
Those having a particle size of usually 0.1 to 50 μm can be used, and those having a particle size of 0.5 to 10 μm are particularly preferable.

The addition amount of the above-mentioned component (a), the hydrotalcite compound and the zeolite compound, is 0.01 to 10 parts by weight with respect to 100 parts by weight of the vinyl chloride resin.
It is preferably 0.05 to 5 parts by weight. If the above-mentioned addition amount is less than 0.01, there is almost no addition effect, and if it exceeds 10 parts by weight, there is no effect of increasing the addition amount, and rather defects such as large coloring occur.

The component (b) component metal hydroxide used in the present invention is preferably a Group IIa metal or Group III metal hydroxide, such as beryllium hydroxide, magnesium hydroxide or calcium hydroxide. , Strontium hydroxide, barium hydroxide, aluminum hydroxide and the like.

The above metal hydroxides are usually commercially available and can be used regardless of the particle size, particle size, specific surface area, etc., and have been treated with fatty acid, plasticizer, process oil, etc. May be.

The addition amount of the metal hydroxide which is the component (b) is 0.1% with respect to 100 parts by weight of the vinyl chloride resin.
The amount is 01 to 10 parts by weight, preferably 0.05 to 5 parts by weight. If the above-mentioned addition amount is less than 0.01, there is almost no addition effect, and if it exceeds 10 parts by weight, there is no effect of increasing the addition amount, and rather defects such as large coloring occur.

The component (c) used in the present invention, ammonium perchlorate, may be an anhydride or a hydrate.

The amount of ammonium perchlorate as the component (c) added is 0.001 to 10 parts by weight, preferably 0.01 to 5 parts by weight, based on 100 parts by weight of the vinyl chloride resin.
Parts by weight. If the above-mentioned addition amount is less than 0.001, there is almost no addition effect, and if it exceeds 10 parts by weight, the addition effect is not exerted, and rather the thermal stability is deteriorated, and coloring is large.

Further, the composition of the present invention may be used in combination with other stabilizers, plasticizers and other additives which are usually used in vinyl chloride resin compositions for powder molding.

Other stabilizers that can be used in the present invention include:
Organic carboxylic acids, metal salts of phenols and organic phosphoric acids, epoxy compounds, organic phosphite compounds, pure organic stabilization aids, metal salts of perchloric acid, hydrotalcite treated with perchloric acid or silicic acid treated with perchloric acid. Other perchlorates such as salts and other inorganic metal compounds may be mentioned.

Examples of the metal that constitutes the metal salt of the organic carboxylic acid, phenols and organic phosphoric acids include lithium, potassium, sodium, calcium, barium, magnesium, strontium, zinc, tin, cesium, aluminum and organic tin. Can be mentioned.

Examples of the organic carboxylic acid include acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, 2-ethylhexylic acid, neodecanoic acid, capric acid, undecanoic acid, and lauric acid. , Tridecanoic acid, myristic acid, palmitic acid, isostearic acid, stearic acid, 12-hydroxystearic acid, behenic acid, montanic acid, benzoic acid, monochlorobenzoic acid, p-tert-butylbenzoic acid, dimethylhydroxybenzoic acid, 3, 5-di-tert-butyl-4-hydroxybenzoic acid, toluic acid, dimethylbenzoic acid, ethylbenzoic acid, cuminic acid, n-propylbenzoic acid, aminobenzoic acid, N, N-dimethylaminobenzoic acid, acetoxybenzoic acid, Salicylic acid, p-tertiary octyl salicylic acid, elaidic acid, oleic acid Acid, linoleic acid, linolenic acid,
Monovalent carboxylic acids such as thioglycolic acid, mercaptopropionic acid and octylmercaptopropionic acid; oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid Acid, terephthalic acid, hydroxyphthalic acid, chlorophthalic acid, aminophthalic acid,
Maleic acid, fumaric acid, citraconic acid, metaconic acid,
Divalent carboxylic acids such as itaconic acid, aconitic acid, thiodipropionic acid or their monoesters or monoamide compounds; butanetricarboxylic acid, butanetetracarboxylic acid, hemimellitic acid, trimellitic acid, melophanoic acid, pyromellitic acid Examples thereof include di- or triester compounds of trivalent or tetravalent carboxylic acids.

The above-mentioned phenols include tert-butylphenol, nonylphenol, dinonylphenol, cyclohexylphenol, phenylphenol,
Octylphenol, phenol, cresol, xylenol, n-butylphenol, isoamylphenol, ethylphenol, isopropylphenol, isooctylphenol, 2-ethylhexylphenol,
Examples thereof include tertiary nonylphenol, decylphenol, tertiary octylphenol, isohexylphenol, octadecylphenol, diisobutylphenol, methylpropylphenol, diamylphenol, methylisofuxylphenol, and methyltertiaryoctylphenol.

The above-mentioned organic phosphoric acids include mono- or di-octyl, -decyl, -dodecyl, -tridecyl, -tetradecyl, -hexadecyl, -octadecyl, -phenyl, -tolyl, -xylyl, -octylphenyl,-. Examples include nonylphenyl phosphoric acid, pyrophosphoric acid, phosphorous acid, and the like.

The metal salts of these organic carboxylic acids, phenols and organic phosphoric acids are acid salts, neutral salts,
It may be an overbased complex in which a part or all of the basic salt or the base of the basic salt is neutralized with carbonic acid.

The addition amount of the metal salt of the above-mentioned organic carboxylic acid, phenols and organic phosphoric acids is the vinyl chloride resin 1
It is preferably 0.01 to 10 parts by weight, more preferably 0.05 to 5 parts by weight, relative to 00 parts by weight.

Examples of the epoxy compound include bisphenol type and novolac type epoxy resins, epoxidized natural fats and oils such as epoxidized soybean oil and epoxidized linseed oil, and epoxidized unsaturated fatty acid alkyls such as epoxidized tall oil fatty acid octyl. Examples thereof include esters and alicyclic epoxy compounds such as vinylcyclohexene diepoxy.

The amount of the epoxy compound added is preferably 0.01 to 100 parts by weight of the vinyl chloride resin.
20 parts by weight, more preferably 0.05 to 10 parts by weight.

Examples of the organic phosphite compound include diphenyldecyl phosphite, triphenyl phosphite, tris (nonylphenyl) phosphite,
Tridecyl phosphite, tris (2-ethylhexyl) phosphite, tributyl phosphite, dilauryl acid phosphite, dibutyl acid phosphite, tris (dinonylphenyl) phosphite, trilauryl trithiophosphite, trilauryl phosphite, bis (Neopentyl glycol) -1,4-cyclohexane dimethyl phosphite, distearyl pentaerythritol diphosphite, diphenyl acid phosphite, tetradecyl-1,1,3-tris (2'-
Methyl-5'-tert-butyl-4'-hydroxyphenyl) butanediphosphite, tetra (C12-15 mixed alkyl) -4,4'-isopropylidenediphenyldiphosphite, tris (4-hydroxy-2,5) -Di-tert-butylphenyl) phosphite, tris (mono, di-mixed nonylphenyl) phosphite, hydrogenated-4,4'-isopropylidene diphenol polyphosphite, diphenyl bis [4,4'-n-butylidene bis (2-tert-butyl-5-methylphenol)] thiodiethanol diphosphite, bis (octylphenyl) .bis [4,4
4'-n-butylidene bis (2-tert-butyl-5-methylphenol)]-1,6-hexanediol diphosphite, phenyl-4,4'-isopropylidene diphenol pentaerythritol diphosphite, phenyldiisodecyl Phosphite, tetratridecyl (2-
Tert-butyl-5-methylphenol) diphosphite,
Tris (2,4-ditert-butylphenyl) phosphite and the like can be mentioned.

The amount of the organic phosphite compound added is
The amount is preferably 0.01 to 10 parts by weight, more preferably 0.05 to 5 parts by weight, based on 100 parts by weight of the vinyl chloride resin.

As the above-mentioned pure organic stabilizing aid, phenols such as bisphenol A and hydrogenated bisphenol A; pentaerythritol, dipentaerythritol,
Polyhydric alcohols such as dipentaerythritol adipate, mannitol, sorbitol and ester compounds or partial ester compounds thereof; β-diketone compounds such as dibenzoylmethane, benzoylacetone, stearylbenzoylmethane, dehydroacetic acid, and metal salts thereof. 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid didodecyl ester, 2-phenylindole, melamine and other organic nitrogen-containing compounds.

The amount of the above-mentioned pure organic stabilizing aid added is preferably 0.0 based on 100 parts by weight of the vinyl chloride resin.
The amount is 01 to 5 parts by weight, more preferably 0.005 to 3 parts by weight.

Examples of the metal constituting the metal salt of perchloric acid include lithium, sodium, potassium, strontium, barium, zinc, cadmium, lead and aluminum. The metal salt may be an anhydrous salt or a hydrous salt, or may be a salt thereof dissolved in an alcohol or ester solvent such as butyl diglycol or butyl diglycol adipate, or a dehydrated product thereof.

The above-mentioned perchloric acid-treated hydrotalcite is
A perchloric acid-modified product in which a part or all of carbonic acid of the hydrotalcite compound represented by the general formula (I) is replaced with perchloric acid.

The surface of the perchloric acid-treated hydrotalcite has a higher fatty acid such as stearic acid, a higher fatty acid metal salt such as an alkali metal oleate, or an organic sulfonic acid metal such as an alkali metal dodecylbenzene sulfonate. Those coated with salt, higher fatty acid amide, higher fatty acid ester or wax can also be used.

Examples of the perchloric acid-treated silicate include metal silicates such as calcium silicate, magnesium silicate, barium silicate and zinc silicate, and various siliceous clay minerals or their treated products such as kaolin, bentonite, mica powder and talc. , Diatomaceous earth, acid clay, activated clay, zeolite, and other natural or synthetic silicates treated with an aqueous solution of perchloric acid. Among these perchloric acid-treated silicates, calcium silicate, magnesium silicate, barium silicate , Kaolin, bentonite, talc, acid clay, activated clay and treated zeolite are preferable.

The above-mentioned perchloric acid-treated hydrotalcite or perchloric acid-treated silicate is obtained by, for example, adding hydrotalcite or silicate to a dilute aqueous solution of perchloric acid and stirring, and then filtering, if necessary. It can be easily produced by dehydration or drying. In the production, the molar ratio of hydrotalcite or silicate to perchloric acid can be set arbitrarily, but generally 0.1 to 2 perchloric acid per 1 mol of hydrotalcite or silicate. It is preferable to use it in a molar ratio.

The addition amount of the metal salt of perchloric acid, hydrotalcite treated with perchloric acid or silicate treated with perchloric acid is
With respect to 100 parts by weight of vinyl chloride resin, it is preferably 0.
001 to 10 parts by weight, more preferably 0.01 to 5 parts by weight.

Examples of the above other inorganic metal compounds include calcium silicate, calcium phosphate, calcium oxide, magnesium silicate, magnesium phosphate, magnesium oxide and the like.

These other stabilizers can be used in combination of two or more kinds according to the purpose. In general,
It is preferable to further use a combination of a metal salt of an organic acid / organic phosphite compound in the composition of the present invention.

The above-mentioned plasticizer which can be used in the present invention includes
Any plasticizer usually used for vinyl chloride resins can be optionally used, for example, dibutyl phthalate, butylhexyl phthalate, diheptyl phthalate, dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, dilauryl phthalate, dicyclohexyl phthalate, Phthalate plasticizers such as dioctyl terephthalate; adipate plasticizers such as dioctyl avipate, diisononyl adipate, diisodecyl adipate, di (butyldiglycol) adipate; triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tri (isopropyl) Phenyl) phosphate, triethyl phosphate, tributyl phosphate, trioctyl phosphate, tri (butoxyethyl) phos Phosphate plasticizer systems such as octyldiphenyl phosphate; polyhydric alcohols such as ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butanediol, 1,4- Butanediol, 1,5-hexanediol, 1,6-hexanediol, neopentyl glycol and the like and dibasic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, Polyester plasticizer using sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, etc. with monohydric alcohol or monocarboxylic acid as stopper if necessary, epoxidized soybean oil, epoxidized linseed oil, epoxidized tung oil, epoxidized fish , Epoxidized beef tallow oil, epoxidized safflower oil, epoxidized methyl stearate, -butyl, 2-ethylhexyl, -stearyl ester, epoxidized polybutadiene, epoxidized tall oil fatty acid ester, epoxidized linseed oil fatty acid ester and other epoxies Other plasticizers include tetrahydrophthalic acid plasticizers, azelaic acid plasticizers, sebacic acid plasticizers, stearic acid plasticizers, citric acid plasticizers and trimellitic acid plasticizers.

In addition, in the composition of the present invention, if necessary, for example, an ultraviolet absorber, a hindered amine light stabilizer, a cross-linking agent, a filler, a pigment, a foaming agent, an antistatic agent, a plate-out preventing agent, Surface treatment agents, lubricants, flame retardants, fluorescent agents, photo-deteriorating agents, mildew-proofing agents, bactericides, non-metal stabilizers, processing aids, release agents and the like can be included.

The powder molding resin composition of the present invention is produced, for example, as follows. A vinyl chloride resin produced by a suspension polymerization method or a bulk polymerization method is added to the above-mentioned essential components (a), (b), (c) and, if necessary, a plasticizer, an organic carboxylic acid, an organic phosphoric acid. Alternatively, metal salts of phenols, lubricants such as hydroxy fatty acid oligoesters or salts thereof, and other additives are uniformly dispersed in a mixer such as a super mixer, or when a fluidity improver is added, they are dry blended. Then, after cooling with a cooling mixer or the like, a fluidity improver is added, and the surface of the dry blended vinyl chloride resin is uniformly coated to obtain a composition.

[0052]

[Examples] The composition of the present invention and its stabilizing effect are specifically described below with reference to Examples. However, the invention is not limited to these examples.

Example 1 A vinyl chloride resin composition having the following [formulation] was dried up in a gear oven at 110 ° C. for 1 hour and then stirred for 15 minutes using a raider to prepare a compound. The chromium mirror plate is put in a gear oven at 300 ° C. for about 15 minutes and taken out, and when the mirror plate reaches 240 ° C., the compound is rapidly spread to a uniform thickness and the molded sheet is left for 10 seconds. The mold is turned upside down, left as it is for 30 seconds, then immersed in a water tank and cooled.
The gelation state of the sheet at that time was evaluated according to the following evaluation criteria.

[Evaluation Criteria] ◎ Completely gelled ○ Although gelled, granules remained inside △ Gelled but surface irregularity × Ungelled portion

Further, the gelled sheet (thickness 1.8 mm) prepared here was put in a gear oven at 240 ° C., the decomposition time was measured, and the thermal stability was evaluated. Further, the coloring property of the gelled sheet after accelerated deterioration for 500 hours in an oven at 130 ° C. was evaluated in 10 steps (evaluation criteria: good 1).
← ─ → 10 evil).

The results are shown in [Table 1] below.

[Composition] Parts by Weight Suspension Polymerized PVC 90 Paste PVC 10 Di (C9-11 mixed alkyl) phthalate 65 Epoxidized soybean oil 5 Zinc stearate 0.3 Ammonium perchlorate 0.5 Hydrotalcite-1 (HT-1) ^{* 1} 1.0 Test compound (shown in [Table 1] below) [Table 1] Tetra (C12-15 mixed alkyl) bisphenol A 1.0 diphosphite * 1: Composition formula: Mg ₄ Al ₂ ( OH) ₁₂ , CO ₃

[0058]

[Table 1]

Example 2 A gelled sheet was prepared in the same manner as in Example 1 according to the following [formulation] and the gelled state was evaluated. When the temperature reached 60 ° C. in the cooling stage, the gelled sheet was peeled off, and the degree of haze of the chromium mirror plate and the degree of peeling of the sheet were examined to evaluate the demoldability and the mold stain in 10 stages ( Evaluation criteria: good 1 ← →→ 10 bad).

Further, urethane foam was injected into the molded sheet on the mirror-finished plate made of chrome with a constant thickness to prepare a urethane backing sheet. This sheet was placed in an oven at 120 ° C., the coloring degree of the sheet after 300 hours and 450 hours was measured using a Hunter colorimeter, and the color difference (ΔE) from the original was obtained, and the sheet was exposed at a relatively low temperature. The coloring property was used.

The results are shown in Table 2 below.

(Composition) Parts by weight Suspension polymerization PVC 100 Tri (C7-9 mixed alkyl) trimellitate 65 Epoxidized linseed oil 5 Bisphenol A diglycidyl ether 3 Calcium stearate 0.5 Basic zinc octylate 0.5 Test compound (Shown in [Table 2] below) [Table 2] Calcium hydroxide 1.0 Di (tridecyl) phenyl phosphite 1.0 ADEKA STAB LA-67 ^{* 2} 0.2 Ammonium perchlorate 0.2 * 2: Asahi Denka Industrial hindered amine stabilizer

[0063]

[Table 2]

As is clear from the above [Table 1] and [Table 2], the vinyl chloride resin is, for example, a hydrotalcite compound or an alkali or alkaline earth metal aluminosilicate (zeolite compound) having a zeolite crystal structure alone. The composition added in (Comparative Example 1-4) is
The compositions (comparative examples 1-6 and 2-3) in which the metal hydroxide alone was added were inferior in gelation property and colorability, and the thermal stability and colorability were inferior. The compositions added alone (Comparative Examples 1-3 and 2-2) are inferior in thermal stability and mold contamination. In addition, a composition obtained by adding only two of a hydrotalcite compound or a zeolite compound, a metal hydroxide and ammonium perchlorate (comparative example
1-1, 1-7, 1-8, 2-1, 2-4, 2-5, 2-6, 2-7)
However, it is not possible to compensate for each drawback. Further, the composition obtained by adding a hydrotalcite compound or a zeolite compound and ammonium perchlorate and a metal oxide instead of a metal hydroxide (Comparative Example 1-5) has a certain degree of thermal stability. Although it is improved, the gelling property is insufficient and the coloring property is remarkably inferior.

On the other hand, a vinyl chloride resin composition of the present invention prepared by adding a hydrotalcite compound or zeolite compound, a metal hydroxide and ammonium perchlorate to a vinyl chloride resin (Example 1) It is understood that -1 to 1-6 and 2-1 to 2-7) satisfy all the properties of thermal stability, gelling property, coloring property, demolding property and mold staining property. .

[0066]

INDUSTRIAL APPLICABILITY The vinyl chloride resin composition for powder molding of the present invention is excellent in heat stability, gelling property, coloring property, demolding property and mold staining property.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masaru Nagahama 5-2-13 Shirahata, Urawa-shi, Saitama Asahi Denka Kogyo Co., Ltd.

Claims (1)

[Claims] 1. To 100 parts by weight of vinyl chloride resin,
(A) 0.01 to 10 parts by weight of at least one selected from the group consisting of hydrotalcite compounds and alkali and alkaline earth metal aluminosilicates having a zeolite crystal structure; and (b) metal hydroxides. A vinyl chloride resin composition for powder molding, which comprises 0.01 to 10 parts by weight of at least one selected and 0.001 to 10 parts by weight of (c) ammonium perchlorate.