JPH0718141A - Vinyl chloride-based resin composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition suppressed in chlorine gas release therefrom when combusting the molded products, resulting in suppressing chlorine gas generation. CONSTITUTION:This resin composition can be obtained by incorporating (A) 100 pts.wt. of a vinyl chloride-based resin with (B) 10-100 pts.wt. of calcium carbonate fine powder <=0.1Xm in mean particle diameter and (C) 0.2-20 pts.wt. of an epoxy compound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vinyl chloride resin composition, and more particularly to a vinyl chloride resin composition which suppresses generation of hydrochloric acid gas (HCl) when a vinyl chloride resin molded product is incinerated.

[0002]

2. Description of the Related Art Conventionally, calender molding, extrusion molding,
Many vinyl chloride resin molded articles molded by molding methods such as injection molding and cast molding are used.

[0003]

By the way, most of the above vinyl chloride resin molded articles are incinerated and reused as heat energy. However, when the vinyl chloride resin molded articles are incinerated, hydrochloric acid is used. Since the gas is generated, there is a problem that it invades the inner wall surface of the incinerator.

The present inventor has conducted extensive studies in order to solve the above drawbacks, and as a result, surprisingly, by adding calcium carbonate fine powder having a specific particle diameter and an epoxy compound to a vinyl chloride resin, it is possible It was found that chlorine desorption can be suppressed, and as a result, generation of hydrochloric acid gas can be suppressed, and the present invention has been completed.

[0005]

The vinyl chloride resin composition of the present invention is based on 100 parts by weight of the vinyl chloride resin.
Calcium carbonate fine powder having an average particle size of 0.1 μm or less 10
It is characterized by adding 100 parts by weight and 0.2 to 20 parts by weight of an epoxy compound.

The vinyl chloride resin as used in the present invention means, in addition to polyvinyl chloride, vinyl chloride and other monomers such as vinylidene chloride, acrylonitrile, maleic acid, itaconic acid, methacrylic acid, vinyl acetate, ethylene, propylene and malein. It is a copolymer resin with acid ester, methyl methacrylate, methacrylic acid ester, acrylic acid ester, higher vinyl ether, or a blend thereof.

If necessary, a plasticizer and a stabilizer are added to the above vinyl chloride resin. As the plasticizer, phthalic acid ester plasticizers, phosphoric acid ester plasticizers and the like can be used. Specific examples of the phthalate ester plasticizer include di-2-ethylhexyl phthalate, diisononyl phthalate, dibutylbenzyl phthalate, diisodecyl phthalate, and diundecyl phthalate.
Specific examples of the phosphoric acid ester-based plasticizer include tricresyl phosphate, trixylenyl phosphate, tris (isopropylphenyl) phosphate, tributylphosphate, triethylphosphate, triphenylphosphate, triethylphenylphosphate and the like. Further, in addition to the phthalate ester-based plasticizer and the phosphate ester-based plasticizer, adipic acid ester-based plasticizer such as di-2-ethylhexyl adipate, sebacate ester-based plasticizer such as di-2-ethylhexyl sebacate, Azelaine ester plasticizers such as di-2-ethylhexyl azelate, trimellitic acid ester plasticizers,
Polyester plasticizer such as polypropylene adipate,
A plasticizer such as chlorinated paraffin can also be used. The above plasticizers may be used alone or in combination of two or more. The amount of the plasticizer added is 0 to 100 parts by weight with respect to 100 parts by weight of the vinyl chloride resin,
It is appropriately selected according to the hardness required for the molded product to be obtained. For example, if the molded product is a hard product such as PVC pipe, the addition amount of the plasticizer is 0 to 15 parts by weight, and if it is a semi-hard product such as a sticker or a film for plywood building materials, it is 10 to 10.
For soft products such as 30 parts by weight, films, sheets, and vinyl chloride leather, about 20 to 100 parts by weight of a plasticizer is added.

As the stabilizer, stabilizers usually used for vinyl chloride resins such as metal soaps and organic phosphite stabilizers can be used. As metal soap, zinc stearate, barium stearate, calcium stearate,
Examples thereof include barium ricinoleate, calcium laurate, calcium oleate, zinc octoate, and the like. Organic phosphite-based diphenyldecylphosphite, triphenylphosphite, tris (nonylphenyl) phosphite, tridecylphosphite, tris (2- Examples include ethylhexyl) phosphite, tristearyl phosphite, octyldiphenyl phosphite, and the like.
Also, dibutyltin dilaurate, dibutyltin malate,
Tin-based stabilizers such as organic tin mercaptide and organic tin sulfonamide, tribasic lead sulfate, tribasic lead phosphite, and tribasic lead maleate can also be used. The above stabilizers may be used alone or in combination of two or more. The amount of these stabilizers added is 0.5 to 10 parts by weight, preferably 1 to 5 parts by weight, based on 100 parts by weight of the resin.

The calcium carbonate fine powder used in the present invention has an average particle size of 0.1 μm or less. If the average particle size of the calcium carbonate fine powder is larger than 0.1 μm, the effect of suppressing the desorption of chlorine during combustion cannot be obtained.
The amount of calcium carbonate added is 10 to 100 parts by weight, preferably 20 to 80 parts by weight, based on 100 parts by weight of the resin.

As the epoxy compound used in the present invention, epoxidized vegetable oil, epoxy resin and the like can be used. Examples of the epoxidized vegetable oil include epoxidized soybean oil and epoxidized linseed oil, Examples of the epoxy resin include epoxidized polybutadiene, epoxy methyl stearate, butyl epoxy stearate, ethylhexyl epoxy stearate, tris (epoxypropyl) isocyanurate, 3- (2-xenoxy)-
Examples thereof include 1,2-epoxypropane, bisphenol A diglycidyl ether, vinyldicyclohexene diepoxide, and polycondensation products of 2,2-bis (4-hydroxyphenyl) propane and epichlorohydrin. The above epoxy compounds may be used alone or in combination of two or more. The amount of the epoxy compound added is 0.2 to 20 parts by weight, preferably 1.0 to 10 parts by weight, based on 100 parts by weight of the vinyl chloride resin. If the amount of the epoxy compound added is too small, the effect of suppressing the desorption of chlorine during combustion cannot be obtained.
Even if added in parts by weight or more, the effect of suppressing desorption of chlorine during combustion does not proportionally improve.

The vinyl chloride resin composition of the present invention contains, in addition to the above-mentioned plasticizer, stabilizer, calcium carbonate and epoxy compound, a lubricant or an anti-adhesive agent, an antistatic agent, an ultraviolet absorber, if necessary. Additives such as antioxidants, light stabilizers, inorganic fillers and colorants can also be added.

As the lubricant or anti-sticking agent, fatty acid-based lubricants such as stearic acid, isostearic acid and palmitic acid, saturated fatty acid amide-based lubricants such as stearic acid amide, methylene bis stearoamide and ethylene bis stearoamide, butyl palmi. Examples include organic phosphate metal salt lubricants such as tate and butyl stearate, polyethylene wax, liquid paraffin, and the like. The above lubricants or antiblocking agents may be used alone or in combination of two or more.

As the antistatic agent, polyoxyethylene alkyl ether, polyoxyethylene alkylphenol, polyoxyethylene alkylamine, polyoxyethylene alkylamide, fatty acid polyethylene glycol ester, which are commonly used for vinyl chloride resins,
Nonionic antistatic agents such as fatty acid sorbitan ester, polyoxyethylene fatty acid sorbitan ester, fatty acid glycerin ester, alkyl polyethyleneimine, fatty acid amine salt, alkyl phosphate ester salt, polyoxyethylene alkyl phosphate ester salt, alkyl sulfate ester salt Anionic antistatic agents such as polyoxyethylene alkyl sulfate ester salts, alkylamine salts, alkyl quaternary ammonium salts, cationic antistatic agents such as alkyl imidazoline derivatives, alkyl betaine-type activators,
Amphoteric antistatic agents such as alkyl imidazoline derivatives and N-alkyl β-alanine type activators can be used. The above antistatic agents may be used alone or in combination of two or more.

As the UV absorber, a benzoate UV absorber such as resocinol monobenzoate which is generally used for vinyl chloride resins, 4-hydroxy-4.
-Methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-
4'-methylbenzophenone, 2-hydroxy-4-octoxybenzophenone, 4-dodecyloxy-2-hydroxybenzophenone, 2-hydroxy-4-stearyloxybenzophenone, 2-hydroxy-4-benzyloxybenzophenone, 5-chloro- 2-hydroxybenzophenone, 2,2'-dihydroxy-4,4 '
-Dimethoxybenzophenone, 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4-n-octoxybenzophenone, 2,2 ', 4,4'-tetrahydroxy Benzophenone-based UV absorbers such as benzophenone, 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, benzotriazole-based UV absorbers such as substituted hydroxyphenylbenzotriazole, phenyl salicylate, 4-tert-butylphenyl salicylate , P-tert-butylphenyl salicylate, p-octylphenyl salicylate, salicylic acid ester-based ultraviolet absorbers such as salicylic acid derivatives, and cyanoacrylate-based ultraviolet absorbers. The above ultraviolet absorbers may be used alone or in combination of two or more.

As the light stabilizer, 4- (phenylacetoxy) 2,2,6, which is usually used for vinyl chloride resins, is used.
6-tetramethylpiperidine, tris- (2,2,6
6-tetramethyl-4-piperidyl) triazine-2,
A light stabilizer such as a hindered amine compound such as 4,6-tricarboxylate may be used alone or in combination of two or more.

As the inorganic filler, magnesium carbonate,
Examples thereof include magnesium silicate, silicon oxide, aluminum oxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, clay, silica, talc and hydrotalcites. The above inorganic fillers may be used alone or in combination of two or more.

The above vinyl chloride resin composition is appropriately molded by a molding method such as calender molding, extrusion molding, injection molding or cast molding to obtain a vinyl chloride resin molded article. The molding conditions and equipment at this time may be the same as those used when molding a conventional vinyl chloride resin composition, and there is no need to use special conditions or equipment.

[0018]

Since the vinyl chloride resin composition of the present invention can suppress the desorption of chlorine during combustion, almost no generation of hydrochloric acid gas is observed even when the vinyl chloride resin molded product is burned.

[0019]

EXAMPLES The present invention will be described more specifically with reference to specific examples.

[Examples 1 to 6 and Comparative Examples 1 to 4] Vinyl chloride resin compositions having the formulations shown in Table 1 were formed into a film having a thickness of 0.3 mm by a test roll at 160 ° C. Small pieces were obtained to obtain a small piece sample. The obtained small piece sample was weighed, placed in a beaker, burned with a burner, the water-soluble content of the combustion residual ash was dissolved, and the chlorine content in the combustion residual ash was quantified. Based on the obtained results, the residual chlorine rate was calculated by the following formula and is shown in Table 1.

[Equation 1]

[0021]

[Table 1]

[0022]

As described in detail above, the vinyl chloride resin composition of the present invention can suppress the desorption of chlorine during combustion, and as a result, even if a vinyl chloride resin molded article is burned. Almost no generation of hydrochloric acid gas is observed. Therefore, since it does not attack the inner surface of the incinerator at the time of combustion, it can be incinerated together with other incinerators and reused as thermal energy without special equipment or treatment.

Claims (1)

[Claims] 1. A calcium carbonate fine powder 1 having an average particle diameter of 0.1 μm or less with respect to 100 parts by weight of a vinyl chloride resin.
0 to 100 parts by weight and an epoxy compound of 0.2 to 2
A vinyl chloride resin composition, characterized in that 0 part by weight is added.