JP2020117558A - Chlorine-containing resin composition, and formed article thereof - Google Patents

Abstract

To provide a chlorine-containing resin composition which comprises an aminouracil compound and/or aminothiouracil compound and hydrotalcite and has excellent heat resistance.SOLUTION: A chlorine-containing resin composition comprises a chlorine-containing resin and an aminouracil compound and/or aminothiouracil compound represented by the general formula (1) in the figure, a hydrotalcite compound, and a hydrotalcite compound supporting perchloric acid. (In the formula, Rand Rare identical or different and each represent a hydrogen atom, or an C1-12 alkyl group, alkenyl group, cycloalkyl group or phenyl alkyl group optionally having a substituent; and X represents a sulfur atom or oxygen atom).SELECTED DRAWING: None

Description

The present invention relates to a chlorine-containing resin composition and a molded product thereof.

Chlorine-containing resins typified by polyvinyl chloride are widely used in various applications such as electric wires, pipes, joints and variants because they have high flexibility and are easy to process and have excellent physical properties such as mechanical strength. .. On the other hand, a chlorine-containing resin has a problem in heat resistance (also called thermal stability), and is unstable in heat during processing and use and decomposes by heating, so from the viewpoint of heat resistance and processability improvement, chlorine is included. A stabilizer is usually used together with the contained resin. Conventionally, lead-based stabilizers or organotin-based stabilizers have been widely used as stabilizers, but recently, with increasing awareness of environmental problems, low-toxicity stabilizers (mainly CaZn-based stabilizers) have been used. It is being used more often. Furthermore, in recent years, stabilizers containing a large amount of toxic substances are still used overseas, but there is a tendency to use stabilizers that do not contain heavy metals, which are subject to various regulations for ecological reasons.
Aminouracil compounds, aminothiouracil compounds, pyrrolodiazine compounds, and hydrotalcite are known as components of stabilizers containing no heavy metals (see Patent Documents 1 to 4).

JP, 11-263875, A JP, 10-158454, A U.S. Pat. No. 3,436,362 JP-A-8-269279

As described above, aminouracil compounds, aminothiouracil compounds and hydrotalcite compounds are used as stabilizer components that do not contain heavy metals in consideration of the environment, but chlorine-containing resin compositions using stabilizers containing these are used. The product does not have sufficient heat resistance, and there is a problem that problems such as discoloration with time occur in a high temperature environment during processing, so aminouracil compounds, aminothiouracil compounds and hydrotalcite compounds are selected. It is required to improve the heat resistance of the chlorine-containing resin composition used as the stabilizer component.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a chlorine-containing resin composition containing an aminouracil compound and/or an aminothiouracil compound and a hydrotalcite compound and having excellent heat resistance.

The present inventors have investigated a chlorine-containing resin composition containing an aminouracil compound and/or an aminothiouracil compound and a hydrotalcite compound, and having excellent heat resistance, and a chlorine-containing resin, an aminouracil compound and/or Alternatively, it has been found that when a hydrotalcite compound carrying perchloric acid is further added to a composition containing an aminothiouracil compound and a hydrotalcite compound, the chlorine-containing resin composition has excellent heat resistance. The present invention has been completed.

That is, the present invention includes a chlorine-containing resin and the following general formula (1):

(In the formula, R ¹ and R ² are the same or different and each represents an optionally substituted alkyl group having 1 to 12 carbon atoms, an alkenyl group, a cycloalkyl group, a phenylalkyl group or a hydrogen atom. Represents a sulfur atom or an oxygen atom), an aminouracil compound and/or an aminothiouracil compound, a hydrotalcite compound, and a hydrotalcite compound carrying perchloric acid. It is a characteristic chlorine-containing resin composition.

The chlorine-containing resin composition contains 0.01 to 5 parts by weight of an aminouracil compound and/or an aminothiouracil compound and 0.01 to 5 parts by weight of a hydrotalcite compound with respect to 100 parts by weight of the chlorine-containing resin. It is preferable to include 0.01 to 1 part by weight of the hydrotalcite compound supporting perchloric acid.

The above aminouracil compound and/or aminothiouracil compound is 6-amino-1,3-dialkyluracil, and the alkyl groups are the same or different, and the linear or branched alkyl group having 1 to 12 carbon atoms. Is preferred.

It is preferable that the chlorine-containing resin composition further contains organic acid zinc, and the hydrotalcite compound contains magnesium element (Mg) and/or zinc element (Zn) and aluminum element (Al).

The present invention is also a molded article characterized by using the chlorine-containing resin composition of the present invention.

The chlorine-containing resin composition of the present invention, in addition to the aminouracil compound and/or the aminothiouracil compound and the hydrotalcite compound as a stabilizer, is environmentally friendly using the hydrotalcite compound carrying perchloric acid. Since it is a composition and also has excellent heat resistance, it can be suitably used for a wide range of applications, including applications that are expected to be used in a high temperature environment.

Hereinafter, preferred embodiments of the present invention will be specifically described, but the present invention is not limited to the following description and can be appropriately modified and applied without departing from the scope of the present invention.

1. Chlorine-Containing Resin Composition The chlorine-containing resin composition of the present invention comprises a chlorine-containing resin and the following general formula (1):

(In the formula, R ¹ and R ² are the same or different and each represents an optionally substituted alkyl group having 1 to 12 carbon atoms, an alkenyl group, a cycloalkyl group, a phenylalkyl group or a hydrogen atom. Represents a sulfur atom or an oxygen atom), an aminouracil compound and/or an aminothiouracil compound, a hydrotalcite compound, and a hydrotalcite compound carrying perchloric acid. Characterize.
The chlorine-containing resin composition of the present invention may include a chlorine-containing resin, an aminouracil compound and/or an aminothiouracil compound, a hydrotalcite compound, and a hydrotalcite compound carrying perchloric acid, respectively. It may well contain two or more kinds. Moreover, you may contain 1 type(s) or 2 or more types other components other than these.

The chlorine-containing resin composition of the present invention contains 0.01 to 5 parts by weight of an aminouracil compound and/or aminothiouracil compound and 0.01 to 5 parts of a hydrotalcite compound with respect to 100 parts by weight of a chlorine-containing resin. It is preferable to include 0.01 to 1 part by weight of the hydrotalcite compound supporting perchloric acid. By containing each component in such a ratio, a stabilizing effect by including an aminouracil compound and/or an aminothiouracil compound or a hydrotalcite compound as a stabilizer and a hydrotalcite compound supporting perchloric acid It is possible to improve heat resistance, especially long-term heat resistance by including the above.
The content of the aminouracil compound and/or the aminothiouracil compound is more preferably 0.05 to 3 parts by weight, and further preferably 0.1 to 1.5 parts by weight with respect to 100 parts by weight of the chlorine-containing resin. Parts by weight.
The content of the hydrotalcite-based compound is more preferably 0.05 to 3 parts by weight, and still more preferably 0.1 to 1.5 parts by weight, based on 100 parts by weight of the chlorine-containing resin.
The content of the hydrotalcite compound supporting perchloric acid is more preferably 0.03 to 0.7 part by weight, and even more preferably 0.05 to 0.7 part by weight, relative to 100 parts by weight of the chlorine-containing resin. 0.3 parts by weight.

1) Chlorine-Containing Resin The chlorine-containing resin contained in the chlorine-containing resin composition of the present invention is not particularly limited as long as it is a resin (polymer) containing a chlorine atom, but a vinyl chloride resin is preferable. As a result, a molded product having excellent flexibility and flame retardancy can be obtained.

Examples of vinyl chloride resins include homopolymers of polyvinyl chloride, chlorinated polyvinyl chloride, polyvinylidene chloride, chlorinated polyethylene, etc.; vinyl chloride-vinyl acetate copolymers, vinyl chloride-ethylene-vinyl acetate copolymers. Polymer, vinyl chloride-ethylene copolymer, vinyl chloride-propylene copolymer, vinyl chloride-styrene copolymer, vinyl chloride-isobutylene copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-urethane copolymer , Vinyl chloride-acrylic acid ester copolymer, vinyl chloride-styrene-maleic anhydride copolymer, vinyl chloride-styrene-acrylonitrile copolymer, vinyl chloride-butadiene copolymer, vinyl chloride-isoprene copolymer, chlorinated Vinyl-chlorinated propylene copolymer, vinyl chloride-vinylidene chloride-vinyl acetate copolymer, vinyl chloride-maleic acid ester copolymer, vinyl chloride-methacrylic acid ester copolymer, vinyl chloride-acrylonitrile copolymer, chlorinated Copolymers such as vinyl-maleimide copolymers; and the like.
A blended product of a chlorine-containing resin and a chlorine-free resin may be used, and a polymerization method for obtaining a vinyl chloride resin is not particularly limited.

2) Aminouracil Compound, Aminothiouracil Compound The aminouracil compound and/or aminothiouracil compound contained in the chlorine-containing resin composition of the present invention is a compound having a structure represented by the above general formula (1).
In the general formula (1), R ¹ and R ² are the same or different, and may have a substituent and have 1 to 12 carbon atoms, an alkenyl group, a cycloalkyl group, a phenylalkyl group, or hydrogen. When it represents an atom, when it is an alkyl group, an alkenyl group, a cycloalkyl group, or a phenylalkyl group, it preferably has 1 to 8 carbon atoms, and more preferably an alkyl group or alkenyl having 1 to 4 carbon atoms. And a cycloalkyl group.
R ¹ and R ² may be any of an alkyl group, an alkenyl group, a cycloalkyl group and a phenylalkyl group, but an alkyl group is preferable.

In the general formula (1), when R ¹ and R ² are an alkyl group, an alkenyl group, or a phenylalkyl group and have a substituent in the alkyl group portion, the substituent has 1 to 20 carbon atoms. Examples thereof include an alkoxy group, a cycloalkyl group, a hydroxy group and a halogen atom.
When R ¹ and R ² are phenylalkyl groups and have a substituent in the phenyl group portion, examples of the substituent include those in which an alkyl group having 1 to 20 carbon atoms is added to the above.

The aminouracil compound and/or aminothiouracil compound represented by the above general formula (1) is 6-amino-1,3-dialkyluracil, and the alkyl groups are the same or different and have 1 carbon atoms. A straight-chain or branched alkyl group having 1 to 12 carbon atoms is preferable, and a straight-chain or branched alkyl group having 1 to 8 carbon atoms is more preferable.
Examples of the linear or branched alkyl group having 1 to 8 carbon atoms include a methyl group, an ethyl group, or a linear or branched propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, or an octyl group. It may be present, but among these, those having 1 to 4 carbon atoms are preferable.

3) Hydrotalcite Compound The hydrotalcite compound contained in the chlorine-containing resin composition of the present invention is not particularly limited, but magnesium element (Mg) and/or zinc element (Zn) and aluminum element (Al) are included. Those containing are preferable.

Particularly preferably, the hydrotalcite compound is the following general formula (2):
_{{(Mg) x (Zn)} y} (Al) z (OH) 2 (A n-) x / n · mH 2 O (2)
(In the formula, A ⁿ⁻ represents an n-valent interlayer anion. x, y, and z are 0<x<1, 0≦y<1, 0.2≦z≦0.4, and x+y+z=1. The ratio {(x+y)/z} of x+y and z is 2.2 or less, and n and m are numbers satisfying 1≦n≦4 and 0≦m, respectively. .). This further improves the heat resistance and heat stability of the chlorine-containing resin composition.

In the general formula (2), the n-valent interlayer anion is not particularly limited, but hydroxide ion (OH ⁻ ), carbonate ion (CO ₃ ²⁻ ), and sulfate ion from the viewpoint of reactivity and reduction of environmental load. At least one selected from the group consisting of (SO ₄ ²⁻ ) is preferable. Of these, carbonate ion is preferable.

x, y, and z are numbers satisfying 0<x<1, 0≦y<1, 0.2≦z≦0.4, and x+y+z=1, and a ratio of x+y and z {(x+y) /Z} is 2.2 or less.
Here, y=0 is referred to as Mg/Al hydrotalcite, and 0<y is referred to as zinc-modified hydrotalcite. In the present invention, any of these can be preferably used.

The ratio {(x+y)/z} of x+y and z is preferably 2.1 or less, more preferably 2.05 or less. Although the lower limit is not particularly limited, it is preferably 1.9 or more, more preferably 2.0 or more.

n is a number that satisfies 1≦n≦4, and may be appropriately adjusted depending on the valence of the interlayer anion.

The hydrotalcite compound preferably has an oil absorption of 50 ml/100 g or less. This improves the gloss of the molded product obtained from the chlorine-containing resin composition of the present invention. The oil absorption of the hydrotalcite compound is more preferably 45 ml/100 g or less, further preferably 30 ml/100 g or less. Further, from the viewpoint of heat resistance, it is preferably 5 ml/100 g or more. More preferably, it is 10 ml/100 g or more.
The oil absorption of the hydrotalcite compound is measured according to JIS K5101-13-1 (2004: refined linseed oil method).

The shape of the particles of the hydrotalcite-based compound is not particularly limited, and examples thereof include a plate shape, a spherical shape, and a disk shape. Especially, it is preferable that it is a plate or a disc.
The particle shape can be observed with a scanning electron microscope or the like.

The average particle diameter of the hydrotalcite-based compound particles is preferably, for example, 0.1 μm or more and 2.0 μm or less. This improves the dispersibility in the chlorine-containing resin and further improves the action and effect of the present invention. It is more preferably 0.3 μm or more, and further preferably 1.5 μm or less.
The average particle diameter of the hydrotalcite-based compound particles can be measured as D50 using, for example, a laser diffraction particle size distribution measuring device (LA950 manufactured by HORIBA). D50 means a 50% cumulative particle diameter on a volume basis.

The specific surface area (also referred to as SSA) of the hydrotalcite-based compound is preferably, for example, 1 m ² /g or more and 50 m ² /g or less. This improves the dispersibility in the chlorine-containing resin and further improves the action and effect of the present invention. It is more preferably 5 m ² /g or more, further preferably 10 m ² /g or more, more preferably 40 m ² /g or less, still more preferably 30 m ² /g or less.
When the specific surface area is within this range, a resin composition having excellent heat resistance can be obtained.

In the present specification, the specific surface area means the BET specific surface area (also referred to as SSA) obtained by the BET method. The BET method is a gas adsorption method in which gas particles such as nitrogen are adsorbed on solid particles, and the specific surface area is measured from the adsorbed amount. By determining, the specific surface area is determined.
Specifically, the BET specific surface area is measured under the following conditions.
[Specific surface area measurement conditions]
Machine used: Mounttech, Macsorb Model HM-1220
Adsorption gas: Nitrogen (N ₂ )
Degassing conditions of external degassing equipment: 105°C-15 minutes Degassing conditions of main body of specific surface area measuring equipment: 105°C-5 minutes

In the above hydrotalcite-based compound, particles in the powder may have a coating layer. In this case, the physical properties of the hydrotalcite compound containing particles having the coating layer preferably satisfy the above physical properties (particle shape, average particle size, specific surface area, etc.). The coating layer is not particularly limited, but it is preferable that the coating layer is surface-treated with a surface-treating agent and coated.

The surface treatment agent is not particularly limited and includes, for example, higher fatty acids, higher fatty acid metal salts (metal salt), anionic surfactants, phosphoric acid esters, silane coupling agents, titanium coupling agents, aluminum coupling agents, etc. Coupling agent. In addition, 1 type or 2 or more types can be used.

More specific surface treatment agents include, for example, higher fatty acids such as stearic acid, oleic acid, erucic acid, palmitic acid, and lauric acid, metal salts of these higher fatty acids such as lithium salts, sodium salts, potassium salts; stearyl alcohol. Sulfate salts of higher alcohols such as oleyl alcohol, sulfate ester salts of polyethylene glycol ether, amide bond sulfate ester salts, ether bond sulfonates; ester bond sulfonates, amide bond alkylaryl sulfonates, ether bond alkylaryl sulfonates Anionic surfactants such as salts; mono- or diesters of orthophosphoric acid with oleyl alcohol, stearyl alcohol, etc., or a mixture thereof, which are in the acid form or phosphoric acid esters such as alkali metal salts or amine salts; vinylethoxysilane , Γ-methacryloxypropyltrimethoxysilane, vinyltris(2-methoxyethoxy)silane, γ-aminopropyltrimethoxysilane and other silane coupling agents; isopropyl triisostearoyl titanate, isopropyl tris(dioctyl pyrophosphate) titanate, isopropyl tri Examples thereof include titanium coupling agents such as decylbenzenesulfonyl titanate; aluminate coupling agents such as acetoalkoxyaluminum diisopropylate.

The amount of the surface treatment agent used is not particularly limited, but for example, the coating amount of the surface treatment agent is 0.1 to 30% by mass with respect to 100% by mass of hydrotalcite containing particles having a finally obtained coating layer. It is preferable to adjust the amount of the surface treatment agent used so as to be in the range of. The range is more preferably 0.1 to 20% by mass.

4) Hydrotalcite-type compound supporting perchloric acid The hydrotalcite-type compound supporting perchloric acid contained in the chlorine-containing resin composition of the present invention is a compound in which the perchloric acid is physically or in the form of particles of hydrotalcite. It is chemically supported, and the structure of the hydrotalcite compound is changed by perchloric acid by being supported. Table The hydrotalcite compound carrying a perchlorate, preferably hydrotalcite compound containing a perchlorate ion, a hydrotalcite compound represented by the general formula (2), with A ^n- As the n-valent interlayer anion to be used, one containing perchlorate ion (ClO ₄ ⁻ ) can be preferably used. In this case, the n-valent interlayer anion may contain only perchlorate ions or may contain other anions. Examples of other anions include hydroxide ion (OH ⁻ ), carbonate ion (CO ₃ ²⁻ ), sulfate ion (SO ₄ ²⁻ ), and the like. At this time, it is not preferable to include an alkali metal salt or an alkaline earth metal salt of perchloric acid because the weather resistance may be deteriorated.

5) Organic acid zinc The chlorine-containing resin composition of the present invention preferably further contains organic acid zinc. By including the organic acid zinc, the weather resistance of the chlorine-containing resin composition can be improved.
The organic acid in the organic acid zinc is not particularly limited, and examples thereof include acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, 2-ethylhexylic acid, neodecanoic acid, capric acid, and undecanoic acid. , Lauric acid, tridecanoic acid, myristic acid, palmitic acid, isostearic acid, stearic acid, 12-hydroxystearic acid, behenic acid, montanic acid, benzoic acid, monochlorobenzoic acid, pt-butylbenzoic acid, dimethylhydroxybenzoic acid 3,5-di-t-butyl-4-hydroxybenzoic acid, toluic acid, dimethylbenzoic acid, ethylbenzoic acid, cumic acid, n-propylbenzoic acid, aminobenzoic acid, N,N-dimethylaminobenzoic acid, Monovalent organic carboxylic acids such as acetoxybenzoic acid, salicylic acid, pt-octylsalicylic acid, elaidic acid, oleic acid, linoleic acid, linoleic acid, thioglycolic acid, mercaptopropionic acid, octylmercaptopropionic acid; oxalic acid, malonic acid , Succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, hydroxyphthalic acid, chlorophthalic acid, aminophthalic acid, maleic acid, fumaric acid, citraconic acid, Divalent organic carboxylic acids such as metaconic acid, itaconic acid, aconitic acid, thiodipropionic acid; and the like, monoester or monoamide compounds of divalent organic carboxylic acids, butanetricarboxylic acid, butanetetracarboxylic acid, hemimellitic acid, Examples thereof include di- or triesters of trivalent or tetravalent organic carboxylic acids such as trimellitic acid, melophanoic acid and pyromellitic acid. Among them, higher fatty acids having 12 to 20 carbon atoms are preferable. Specifically, myristic acid, palmitic acid, isostearic acid, zinc salt of stearic acid and the like, which have appropriate lubricity and compatibility with the chlorine-containing resin, are preferable. More preferably, it is zinc stearate.

When the chlorine-containing resin composition of the present invention contains organic acid zinc, it is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the chlorine-containing resin. With such a ratio, the chlorine-containing resin composition becomes a composition having better weather resistance. The content of the organic acid zinc is more preferably 0.05 to 4 parts by weight, still more preferably 0.1 to 2 parts by weight.

6) Release Agent The chlorine-containing resin composition of the present invention may further contain a release agent (also referred to as an external lubricant) as another component. Examples of the release agent include dipentaerythritol hexastearate and pentaerythritol tetrastearate. Among these, dipentaerythritol hexastearate is preferable. As a result, the chlorine-containing resin composition of the present invention can be prevented from being scratched and streaked.

When the chlorine-containing resin composition of the present invention contains a release agent, the content thereof is not particularly limited, and is preferably 0.01 to 5.0 parts by weight with respect to 100 parts by weight of the chlorine-containing resin. .. More preferably, it is 0.01 to 2.0 parts by weight.

7) Filler The chlorine-containing resin composition of the present invention may further contain a filler. This improves the dimensional stability of the molded product and the strength of the molded product, so that the resin composition is suitable for use as a molded product.

The filler is not particularly limited, and examples thereof include inorganic powders such as inorganic salts, inorganic oxides, and inorganic hydroxides. For example, zinc, titanium, iron, cerium, barium, calcium, silicon, aluminum, magnesium, strontium. , Salts of boron, zirconium, etc., oxides, hydroxides, and complex oxides. The salts are not particularly limited, and examples thereof include sulfates, carbonates, chlorides, acetates, nitrates and the like. Specifically, for example, calcium carbonate, zinc carbonate, magnesium carbonate, silica, titanium oxide, cerium oxide, iron oxide, barium sulfate, strontium sulfate, magnesium sulfate, silicon oxide, aluminum oxide, magnesium oxide, zinc silicate, titanium. Examples thereof include zinc acid salt, barium titanate, talc and the like, and among them, calcium carbonate is preferable.

When the chlorine-containing resin composition contains a filler, its content is not particularly limited, but from the viewpoint of suppressing the occurrence of plate-out, it is preferably 40 parts by weight or less relative to 100 parts by weight of the chlorine-containing resin. .. It is more preferably 30 parts by weight or less. The lower limit is preferably 1 part by weight or more, more preferably 2 parts by weight or more, and further preferably 3 parts by weight or more. Most preferably, the content of calcium carbonate having a specific surface area of 20 m ² /g or less is within these preferable ranges.

8) Other components The chlorine-containing resin composition of the present invention may further contain other components, if necessary. For example, various additives such as a heat-resistant auxiliary agent, an internal lubricant, an ultraviolet absorber, an antioxidant, a cross-linking auxiliary agent, a plasticizer and a pigment can be mentioned. Additives are not particularly limited, for example, polyhydric alcohol compounds such as dipentalithritol as the heat-resistant auxiliary, and epoxy compounds such as epoxy resin, stearic acid monoglyceride, palmitic acid monoglyceride as the internal lubricant, Examples include stearic acid, palmitic acid, dipentaerythritol hexastearate, polyethylene wax, and the like, benzophenone-based compounds, benzotriazole-based compounds, aromatic benzoate-based compounds, and the like as ultraviolet absorbers, and phenol as an antioxidant. Examples of the crosslinking agent include trimethylolpropane trimethacrylate, dipentaerythritol hexaacrylate, and the like, and plasticizers such as dioctyl phthalate (DOP), trioctyl trimellitate (TOTM), and dioctyl adipate ( DOA) and the like. Examples of the pigment include carbon black.

2. Molded product The chlorine-containing resin composition of the present invention is a composition in which the chlorine-containing resin is stabilized without containing a heavy metal-based stabilizer, and is also excellent in heat resistance. Since it is a composition that exhibits excellent characteristics while meeting the above requirements, it can be suitably used as a material for molded articles such as pipes and window frames. Such a molded article using the chlorine-containing resin composition of the present invention is also one aspect of the present invention.
The shape of the molded body is not particularly limited, and may have any shape such as a plate shape, a sheet shape, a film shape, a film shape, a plane shape, or a string shape, a rod shape, a pellet shape, a tubular shape, a window frame shape, or the like. Good.

Specific examples will be given below to describe the present invention in detail, but the present invention is not limited to these examples. Unless otherwise specified, "%" and "wt%" mean "wt% (mass %)". In addition, the measuring method of each physical property is as follows.

1. Raw materials The raw materials listed in Table 1 are as follows.
[Chlorine-containing resin]
Vinyl chloride resin: Shin-Etsu Chemical Co., Ltd., TK-1000, polymerization degree 1000
[Hydrotalcite compounds]
Hydrotalcite _{HT-1: Mg 4 Al 2} (OH) 12 CO 3 · 3H 2 O manufactured by Sakai Chemical Industry Co., Ltd., Mg / Al-based hydrotalcite (Mg / Al = 2.0, BET specific surface area = ^8m 2 / g, average particle size 0.8 μm, oil absorption 28 ml/100 g)
[Perchloric acid-supporting hydrotalcite compounds]
Perchloric acid-supporting hydrotalcite: Alkamizer 5 manufactured by Kyowa Chemical Co., Ltd.
[filler]
Heavy calcium carbonate: Nitto Koka Co., Ltd., Softon KS-1200
Titanium oxide: Sakai Chemical Industry Co., Ltd., R-3L-SN
[Pigment]
Carbon black: Resino Color Co. [external lubricant]
Ester wax (dipentaerythritol hexastearate): Riken Vitamin Co., Ltd., LIQUISTER SL-02
Polyethylene wax: High wax 220MP manufactured by Mitsui Chemicals, Inc.
[Organic acid zinc]
Zinc stearate: Sakai Chemical Industry Co., SZ-P

2. Examples 1-9, Comparative Examples 1, 2
Using an 8-inch roll machine (manufactured by KANSAI ROLL) in which the vinyl chloride resin composition obtained by blending each additive in the vinyl chloride resin at a blending ratio shown in Table 1 and adjusting the roll surface temperature to 180° C. The mixture was kneaded for a minute to prepare a roll sheet having a thickness of 3 mm. Using this sheet, press heat resistance was evaluated by the following method for all Examples 1 to 7 and Comparative Examples 1 and 2. Further, the press weather resistance of Examples 6 to 9 was evaluated by the following method. The results are shown in Table 1.
In addition, in Examples 8 and 9, the sheets became black due to the influence of the addition of carbon black as a pigment, and no difference was found even when the press heat resistance evaluation was performed, and therefore the evaluation was not performed.
<Press heat resistance evaluation>
Seven sheets prepared as described above were stacked and held at 100 kg/cm ^{2 for} 10 minutes and 30 minutes using a pressing machine (TOYOSEIKI MINI TEST PRESS-10) having a pressing surface temperature of 180° C. so as to have a thickness of 2 mm. For the press sheet after holding for 10 minutes and 30 minutes, color difference was measured using a color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd., simultaneous side light spectroscopic color difference meter SQ-2000), and the press sheet held for 10 minutes was used as an initial. The color difference ΔE of the press sheet after holding for 30 minutes was obtained.
It is considered that when ΔE is 13 or less, the color tone is good and a problem is unlikely to occur, and when ΔE is 13 or more, a trouble such as a failure of the molding machine may occur.
ΔE indicates a color difference, but the b value indicating a color tone was also measured. The smaller the b value, the stronger the blue tint, and the larger the b value, the stronger the yellow tint.
<Press weather resistance evaluation>
Seven sheets prepared above were stacked, and a test piece was prepared by using a press machine (TOYOSEIKI MINI TEST PRESS-10) having a press surface temperature of 170° C., and holding at 100 kg/cm 2 for 10 minutes so as to have a thickness of 2 mm. did. Each test piece was subjected to sunshine conditions (room temperature: 40°C, panel temperature: 63°C, irradiation: 120 minutes, spraying 18 minutes, water pressure 0.8 kg/) using a sunshine weather meter (Suga Test Instruments Co., Ltd., Sunshine weather meter S80 type). cm ² ), the hue when held for 480 hours and 960 hours is used as a color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd., simultaneous side-light spectroscopic color difference meter) with the press sheet before being held as an example for each of Examples and Comparative Examples. SQ-2000) to determine the color difference ΔE.

From the comparison between Examples 1 to 7 and Comparative Examples 1 and 2 in Table 1, in addition to the chlorine-containing resin, the aminouracil compound and/or the aminothiouracil compound, and the hydrotalcite compound, a perchloric acid-supported hydro was further added. It was confirmed that the composition containing the talcite-type compound was excellent in heat resistance.
Further, from the comparison between Examples 6 and 7 and Examples 8 and 9, it was confirmed that the composition containing zinc organic acid resulted in a composition excellent in weather resistance.

Claims (5)

A chlorine-containing resin and the following general formula (1):

(In the formula, R ¹ and R ² are the same or different and each represents an optionally substituted alkyl group having 1 to 12 carbon atoms, an alkenyl group, a cycloalkyl group, a phenylalkyl group or a hydrogen atom. Represents a sulfur atom or an oxygen atom), an aminouracil compound and/or an aminothiouracil compound, a hydrotalcite compound, and a hydrotalcite compound carrying perchloric acid. A characteristic chlorine-containing resin composition. The chlorine-containing resin composition contains 0.01 to 5 parts by weight of an aminouracil compound and/or an aminothiouracil compound and 0.01 to 5 parts by weight of a hydrotalcite compound with respect to 100 parts by weight of the chlorine-containing resin. The chlorine-containing resin composition according to claim 1, comprising 0.01 to 1 part by weight of a hydrotalcite compound carrying perchloric acid. The aminouracil compound and/or aminothiouracil compound is 6-amino-1,3-dialkyluracil, and the alkyl groups are the same or different, and the alkyl group having 1 to 12 carbon atoms is a linear or branched alkyl group. The chlorine-containing resin composition according to claim 1 or 2, wherein The organic acid zinc is further included, The said hydrotalcite compound contains magnesium element (Mg) and/or zinc element (Zn), and aluminum element (Al), It is characterized by the above-mentioned. The chlorine-containing resin composition described. A molded article comprising the chlorine-containing resin composition according to any one of claims 1 to 4.