KR20020085079A - Making method of nontoxic resin compound and the nontoxic resin compound thereof - Google Patents

Abstract

PURPOSE: A manufacturing method of nontoxic synthetic resin compound is provided to manufacture the nontoxic synthetic resin compound by mixing a principal raw material glycol based plasticizer and additives nontoxic stabilizer and pigment with PVC, a nontoxic synthetic resin compound manufactured by the method is provided. CONSTITUTION: In manufacturing a synthetic resin compound for preparing a raw material for manufacturing various children's toys medical instruments, various receptacles required in dietary life and industrial subsidiary materials, the manufacturing method of nontoxic synthetic resin compound comprises the processes of completely melting the blended materials by blending 100 kg of PVC (polyvinyl chloride) with 25 to 250 kg of glycol based plasticizer; and extrusion molding the blended materials into pellets using an extrusion molding machine at the temperature range of 178 to 182 deg.C, wherein a principal constituent of the manufactured nontoxic synthetic resin compound is 25 to 250 kg of glycol based plasticizer per 100 kg of PVC (polyvinyl chloride), and the glycol based plasticizer is citric acid based plasticizer.

Description

Manufacturing method of non-toxic synthetic resin compound and synthetic resin compound produced thereby {MAKING METHOD OF NONTOXIC RESIN COMPOUND AND THE NONTOXIC RESIN COMPOUND THEREOF}

The present invention relates to a method for preparing a non-toxic synthetic resin compound and a synthetic resin compound prepared by the present invention. More specifically, the synthetic resin compound used to prepare various synthetic resin toys, zipper slips, synthetic resin pipes, vehicle seat interior materials, etc. Di-butyl phthalate (DBP), di-isodecyl phthalate (DIDP), di-octyl adipate (DOA), di-octyl phthalate (DOP) and di-isononyl phthalate (DINP), cadmium and lead A method for preparing a non-toxic synthetic resin formulation for providing a synthetic resin formulation and a synthetic resin formulation produced thereby.

In general, the synthetic resin compound is widely used as a base material for manufacturing synthetic resin toys, plastic zipper slip, synthetic resin pipes, food containers, medical equipment, etc., commonly referred to as plastic toys.

In this case, the synthetic resin compound is composed of a synthetic resin compound (hereinafter referred to as a compound) prepared primarily by combining PVC (polyvinyl chloride), a plasticizer (DOP), and an appropriate amount of stabilizer, and administering a pigment as necessary. Manufactures the same various products.

However, in the conventional synthetic resin formulations, various substances harmful to the human body have been detected and their use has been limited.

Among them, di-butyl phthalate (DBP), di-isodecyl phthalate (DIDP), di-octyl adipate (DOA), di-octyl phthalate (DOP), and di-isononyl phthalate (DINP), among others, are known as endocrine disruptors. And heavy metals, which cause various diseases, such as the detection of cadmium, lead is emerging as a big problem.

Therefore, in the industry of manufacturing a synthetic resin formulation, it is urgent to provide a synthetic resin formulation in which environmental hormones, which are harmful substances as described above, are not detected.

In view of the above problems, the present invention provides the above-mentioned di-butyl phthalate (DBP), di-isodecyl phthalate (DIDP), di-octyl adipate (DOA), di-octyl phthalate (DOP), and DIN- (di-). In order to provide synthetic resin formulations without detection of toxic environmental hormone substances such as isononyl phthalate), cadmium, and lead, various types of chemicals already used are used to improve the formability, formability and firmness of the final product. While considering, the present invention could be completed by efforts to provide a synthetic resin formulation in which environmental hormone substances corresponding to the above toxic substances are not detected.

In the present invention, a synthetic resin formulation prepared by blending a glycol plasticizer as a main raw material to PVC (polyvinyl chloride), which is a main raw material, and a suitable amount of a conventionally used non-toxic stabilizer, pigment, etc. is provided. Could achieve.

However, it is possible to limit the use of the above-mentioned glycol plasticizers, because the moldability, formability, etc. for the final finished product should be considered.

Looking in more detail below the present invention.

In the state quantified based on 100kg of PVC (polyvinyl chloride), it is characterized by providing a synthetic resin compound by quantitating 25 to 250kg of a plasticizer plasticizer sufficiently mixed with each other and extruding in a heated state.

At this time, when blending the above-mentioned PVC (polyvinyl chloride) and glycol-based plasticizers, pigments used to express the stabilizer and color used to prevent the uniform mixing of the blend and plasticity during heat molding as in the prior art May be optionally used, but this is to use a very small amount as necessary, so does not significantly affect the properties of the synthetic resin formulation to be provided in the present invention.

In addition, a non-toxic stabilizer may be added and used as necessary, but the non-toxic stabilizer is the same as a stabilizer generally used except that it does not have a physical effect compared to the use of an epoxidized soybean oil (ESO). Play a role.

In the present invention, when the composition is quantified on the basis of 100kg of PVC (polyvinyl chloride) below 25kg of glycol plasticizers, the composition of PVC (polyvinyl chloride) corresponds to the complete dissolution. Not only does it require a long time, there is a problem that the extrusion is hardened easily in a heated state, so that extrusion is not performed.

In addition, when the composition is quantified based on 100 kg of PVC (polyvinyl chloride), the composition is more than 250 kg of a glycol plasticizer, but PVC (polyvinyl chloride) is completely dissolved in a short time. Even when extruded, it was not extruded while maintaining the kneading state, but was kept in a liquefied state as it was, so there was no drawability at all.

Therefore, in consideration of the transport, storage and production conditions of the synthetic resin formulation, it was most suitable to quantify and mix 25-250 kg of glycol-based plasticizer per 100 kg of PVC (polyvinyl chloride).

The synthetic resin formulations prepared according to the present invention are completely dissolved by mutually sufficient mixing as described above, and then cut and stored in a pelletized formulation which is discharged while being extruded in a heated state and manufactured into a toy or various synthetic resin products. Can be used.

In the synthetic resin formulation prepared according to the present invention, di-butyl phthalate (DBP), di-isodecyl phthalate (DIDP), di-octyl adipate (DOA), di-octyl phthalate (DOP), di-isononyl phthalate (DINP), There was no detection of toxic environmental hormone substances such as cadmium, lead, mercury, and the present invention will be described by examples and test examples in which the present invention is specifically performed.

Example 1

50 kg of LS-100 resin (LG Chemical Co., Ltd.) was weighed with polyvinyl chloride (PVC), and 10 kg of EBN 330 (alkyl aryl ester of glycol; LG Chem Co., Ltd.) was weighed with a glycol-based plasticizer. 2 kg of CZ-122 (Witco, Germany) as a stabilizer, 1 kg of ESO stabilizer (Gyeongseo Industrial Co., Ltd.), and 10 g of MDAC and Guncheong Pigment (Hyojin Pigment) were used as pigments.

As time passed for complete dissolution, the dissolution rate was slowed down, and it took about 50 minutes for the dissolution to occur by forcible stirring, in particular, the hardness thereof was too hard.

After dissolving, the extrudate began to be discharged by a method of forcibly administered to an extruder maintaining a heating temperature range of 178 to 182 ° C. The initial extrudates were so hard that the extrudate was severely interrupted. And the extruder was unable to load due to the extruder being loaded as the partially calcined blend began to exit with heat.

Example 2

50 kg of LS-100 resin (LG Chemical Co., Ltd.) was weighed with polyvinyl chloride (PVC), 130 kg of EBN 330 (alkyl aryl ester of glycol; LG Chem Co., Ltd.) was weighed with a glycol-based plasticizer. As a stabilizer, 2 kg of CZ-122 (Witco, Germany), 1 kg of ESO stabilizer (Gyeongseo Industrial Co., Ltd.), and 10 g of MDAC and Guncheong Pigment (Hyojin Pigment) were used as pigments.

After about 2 minutes complete dissolution had occurred, and in this state, extrusion was started by administration to an extruder.

At this time, the heating temperature range of the extruder was maintained at 178 ~ 182 ℃.

The extrudate began to be discharged immediately after being fed into the extruder, and the extrudate was discharged in a completely liquid state and could not be pelletized.

Example 3

50 kg of LS-100 resin (LG Chemical Co., Ltd.) was weighed with polyvinyl chloride (PVC) and 100 kg of EBN 330 (alkyl aryl ester of glycol; LG Chem Co., Ltd.) was weighed with a glycol-based plasticizer. 2 kg of CZ-122 (Witco, Germany) as a stabilizer, 1 kg of ESO stabilizer (Gyeongseo Industrial Co., Ltd.), and 10 g of MDAC and Guncheong Pigment (Hyojin Pigment) were used as pigments.

The complete dissolution took about 3 extra hours.

After the dissolution, extrusion was carried out by a method of forcibly administered to an extruder maintaining a heating temperature range of 178 to 182 ° C., and the extrudate was partially broken down due to the hardening of the discharged extrudate. Pelletizing was not a big problem.

Example 4

50 kg of LS-100 resin (LG Chemical Co., Ltd.) was weighed with polyvinyl chloride (PVC), and 50 kg of EBN 330 (alkyl aryl ester of glycol; LG Chem Co., Ltd.) was weighed with a glycol-based plasticizer. 2 kg of CZ-122 (Witco, Germany) as a stabilizer, 1 kg of ESO stabilizer (Gyeongseo Industrial Co., Ltd.), and 10 g of MDAC and Guncheong Pigment (Hyojin Pigment) were used as pigments.

The complete dissolution took about 4 minutes.

Extrusion was performed by the method of forcibly administering to an extruder maintaining a heating temperature range of 178 to 182 ° C after dissolution. The extrudates of the discharged extrudates were stronger than those of Example 3, and the extrudate did not flow down, but partially. The phenomenon of sagging occurred.

However, it was not a big problem for pelletizing by a cutter.

Example 5

50 kg of LS-100 resin (LG Chemical Co., Ltd.) was weighed with polyvinyl chloride (PVC), and 25 kg of EBN 330 (alkyl aryl ester of glycol; LG Chem Co., Ltd.) was weighed with a glycol-based plasticizer. 2 kg of CZ-122 (Witco, Germany) as a stabilizer, 1 kg of ESO stabilizer (Gyeongseo Industrial Co., Ltd.), and 10 g of MDAC and Guncheong Pigment (Hyojin Pigment) were used as pigments.

The complete dissolution took about 4 minutes.

After the dissolution, the extrusion was performed by a method of forcibly administered to an extruder maintaining a heating temperature range of 178 to 182 ° C., and the solidified product of the discharged product was discharged ideally while maintaining the state of kneading flour, and was cut by a cutter. The work was so easy that the ideal work for pelletization was possible.

Test Example 1

3 kg of the extrudate prepared in Example 3 was used as a sample, and according to Korean Food and Drug Administration Notice 2000-60, DBP (di-butyl phthalate), DIDP (di-isodecyl phthalate), and DOA (di-octyl adipate) , The detection of environmental hormone substances such as di-octyl phthalate (DOP) and di-isononyl phthalate (DINP).

The Food and Drug Administration limits the detection limits of the above-mentioned di-butyl phthalate (DBP), di-isodecyl phthalate (DIDP), di-octyl adipate (DOA), di-octyl phthalate (DOP), and di-isononyl phthalate (DINP). Although 50 mg / kg is allowed, the above-described extrudates of Example 3 did not detect any of the above-mentioned environmental hormone substances.

Test Example 2

3 kg of the extrudate prepared in Example 4 was used as a sample, and according to Korean Food and Drug Administration Notice 2000-60, DBP (di-butyl phthalate), DIDP (di-isodecyl phthalate), and DOA (di-octyl adipate) , The detection of environmental hormone substances such as di-octyl phthalate (DOP) and di-isononyl phthalate (DINP).

The Korea Food and Drug Administration sets a limit of detection of the above-mentioned detection limits for 50 mg of sugar was allowed, but the environmental hormone substance, which was the above-mentioned harmful substance, was not detected at all in the extrudate of Example 3.

Test Example 3

3 kg of the extrudate prepared in Example 5 was used as a sample, and according to Korean Food and Drug Administration Notice 2000-60, DBP (di-butyl phthalate), DIDP (di-isodecyl phthalate), and DOA (di-octyl adipate) , The detection of environmental hormone substances such as di-octyl phthalate (DOP) and di-isononyl phthalate (DINP).

The Food and Drug Administration limits the detection limits of the above-mentioned di-butyl phthalate (DBP), di-isodecyl phthalate (DIDP), di-octyl adipate (DOA), di-octyl phthalate (DOP), and di-isononyl phthalate (DINP). Although 50 mg / kg is allowed, the above-described extrudates of Example 3 did not detect any of the above-mentioned environmental hormone substances.

Test Example 4

3 kg of the extrudate prepared in Example 3 was used as a sample, and the detection of lead (Pb) and cadmium (Cd) was confirmed based on the ICP analysis test method.

The detection unit was wt / ppm, and lead and cadmium were not detected at all in the extrudate prepared in Example 3.

Test Example 5

3 kg of the extrudate prepared in Example 4 was used as a sample, and the detection of lead (Pb) and cadmium (Cd) was confirmed based on the ICP analysis test method.

The detection unit was wt / ppm, and lead and cadmium were not detected at all in the extrudate prepared in Example 4.

Test Example 6

3 kg of the extrudate prepared in Example 5 was used as a sample, and the detection of lead (Pb) and cadmium (Cd) was confirmed based on the ICP analysis test method.

The detection unit was wt / ppm, and lead and cadmium were not detected at all in the extrudate prepared in Example 5.

As described above in Test Examples 1, 2, 3, 4, 5, 6, the synthetic resin formulation prepared according to the present invention was not detected as the environmental hormone substances causing the various diseases as harmful substances. In particular, in the present invention, even when citric acid plasticizers are used instead of the above-mentioned glycol plasticizers, it is determined that the above-mentioned harmful substances are not detected in the product, and the citric acid plasticizers of acetyl tri-butyl citrate Use.

As a result, the present invention could provide a synthetic resin formulation in which the above hazardous substances were not detected due to the limited use of the glycol plasticizer, and no specific toxic substances were detected even when the citric acid plasticizer was used instead of the glycol plasticizer. I'm sure it won't.

Therefore, even if a glycol-based plasticizer or a citric acid-based plasticizer is used, if the detection of the harmful substances as described above is found to be within the scope of the present invention.

As described in detail above, the synthetic resin formulation prepared by the method of the present invention is a harmful substance for which endocrine disorders are concerned, and heavy metals such as cadmium and lead are not detected. It is obvious that it is a very useful invention that can be safely made because there is no harm to the human body even if a container, industrial auxiliary material, etc. necessary for living is manufactured.

Claims (3)

In the manufacture of synthetic resin formulations used in all stages of raw materials for the production of various children's toys, medical equipment, containers for various dietary life, industrial auxiliary materials, Non-toxic synthetic resin, characterized in that it is completely dissolved by quantitatively blending with 25 to 250 kg of glycol-based plasticizer per 100 kg of PVC (polyvinyl chloride), and then extruding by heating at the same temperature as before. Method of Preparation of Formulations. Non-toxic synthetic resin compound prepared according to claim 1 is a non-toxic synthetic resin compound, characterized in that the main component of the glycol plasticizer 25 to 250 kg per 100 kg PVC (polyvinyl chloride). The method according to claim 2, Non-toxic synthetic resin compound, characterized in that the glycol plasticizer is a citric acid plasticizer.