KR20180043664A - Polymer resin compounds and riding toy having the same - Google Patents

Abstract

According to one aspect of the present invention, a polymeric resin composition contains an antistatic agent comprising a mixed polymer of phosphate and dimethyl ester; and a polycarbonate resin. The polymeric resin composition ensures antistatic functions and scratch resistance.

Description

TECHNICAL FIELD The present invention relates to a polymer resin composition and a riding toy having the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polymer resin composition and a toy comprising the same, and more particularly, to a riding toy including a high-color-curable functional polymer resin composition and a casing made of the same.

Riding toys are portable toys that children can ride on by electric power as the concept of small electric trains. Due to the increase in consumption levels, demand for high-end toys is increasing in China and Korea, and the need for quality improvement through application to high-quality materials is increasing. Although plastic parts are mainly applied to external parts of riding toys, the application of non-painted materials is gradually increasing due to the sensitivity and environment-friendly issues described above. Plastic materials are not conductive and static electricity is high. Therefore, consumer complaints such as generation of static electricity which can give a feeling of discomfort to children in winter, excessive deposition of dust due to exposure to the outside environment, and scratches occurring while driving are occurring.

Patent Application No. KR20010066622A (2001-10-29)

An object of the present invention is to provide a riding toy comprising a polymer resin composition having antistatic function and scratch resistance and a casing made of the composition. However, these problems are exemplary and do not limit the scope of the present invention.

There is provided a polymeric resin composition according to one aspect of the present invention. Wherein the polymer resin composition comprises an antistatic agent comprising a mixed polymer of a phosphate and a dimethyl ester; And a polycarbonate resin.

In the polymer resin composition, the phosphates may be any one selected from among ethyl phosphate, methyl phosphate, and trimethyl phosphate.

In the polymeric resin composition, the dimethyl ester mixture polymer may be hexanoic acid.

In the polymer resin composition, the composition ratio of the phosphates to the antistatic agent may be 30% to 40%, and the composition ratio of the dimethyl ester mixture polymer may be 40% and 60% to 40%.

The polymeric resin composition may further contain an anti-scratch property-improving agent comprising cis-13 dococenoamide.

In the polymer resin composition, the compounding ratio of the antistatic agent may be 0.1 to 1.0 phr (parts per hundred resin).

A ride-on toy according to another aspect of the present invention is provided. The riding toy includes a casing made of the above-mentioned polymer resin composition.

According to an embodiment of the present invention as described above, a riding toy including a polymer resin composition having an antistatic function and scratch resistance and a casing made of the composition can be realized. Of course, the scope of the present invention is not limited by these effects.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing the chemical structure of a phosphorus-containing additive contained in a polymer resin composition according to a comparative example of the present invention. FIG.
2 is a view showing the chemical structure of carbon black contained in the polymer resin composition according to the comparative example of the present invention.
3 is a view showing the chemical structure of trimethyl phosphate contained in the polymer resin composition according to the embodiment of the present invention.
4 is a view showing the chemical structure of the hexanoleic acid contained in the polymer resin composition according to the embodiment of the present invention.
5 is a view showing the chemical structure of methane sulfonamide contained in the polymer resin composition according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, Is provided to fully inform the user. Also, for convenience of explanation, the components may be exaggerated or reduced in size.

The present invention provides a resin composition which imparts conductivity of a material to reduce the generation of static electricity, dust deposition, and scratch generation, and to provide a high added material for a toy using the resin composition. Before describing the above, the polymer resin composition according to the comparative example of the present invention will be described first.

FIG. 1 is a view showing a chemical structure of a phosphorus-containing additive contained in a polymer resin composition according to a comparative example of the present invention, FIG. 2 is a view showing the chemical structure of carbon black contained in a polymer resin composition according to a comparative example of the present invention to be.

Among commercially available antistatic and scratch-enhancing materials for toys, commercialized resins have not been realized. The phosphorus-based additive as the antistatic agent shown in Fig. 1 may be mixed with the matrix material in the compounding process and bonded to the polymer chain to slightly impart conductivity to the polymer resin. The carbon black as the antistatic agent shown in Fig. 2 is not bonded to the polymer chain, but may be dispersed on the matrix to perform conductivity.

However, there is a problem that the antistatic performance decreases during long-term use due to insufficient bonding between the antistatic additive and the polymer resin. When the antistatic agent is added to plastics, heat change due to heat during the molding process occurs There is a problem that the coloring performance is lowered when applied to transparent materials for coloring. In addition, when carbon black is used as an antistatic agent, there is a problem that it is possible to realize a black color product only. Furthermore, the nonionic antistatic agent is disadvantageous in that it has a disadvantage that an antistatic property is deteriorated and an excessive amount of additive is required, and when the transparent plastic is applied, transparency and physical properties may be deteriorated. As the anionic antistatic agent, a phosphate salt or a sulfonate salt is used. In the case of a sulfonate salt, the color changes to black due to heating, which is disadvantageous for a transparent material. The material to which the above antistatic agent is added has only a simple antistatic property.

In addition, the exterior parts of riding toys have been increasingly applied to non-coated resins as the sensibility needs of the products have increased, and they have been converted into polycarbonate resins which are excellent in coloring property and impact resistance in polypropylene resin. Polycarbonate resin does not have conductivity, and when it is used, it causes a lot of scratches due to dust deposition of the product and weak scratch resistance of the material, resulting in a marked deterioration in appearance quality.

To solve these problems, the present inventors invented a functional polymer resin composition capable of simultaneously enhancing the dust deposition and scratch characteristics of a product by simultaneously mixing an antistatic function and an anti-scratch enhancing additive in a polycarbonate material for a passenger toy external part Respectively.

FIG. 3 is a view showing the chemical structure of trimethyl phosphate contained in the polymer resin composition according to the embodiment of the present invention, and FIG. 4 is a graph showing the chemical structure of the hexanoleic acid contained in the polymer resin composition according to the embodiment of the present invention And FIG. 5 is a view showing the chemical structure of methane sulfonamide contained in the polymer resin composition according to the embodiment of the present invention.

The polymer resin composition according to one embodiment of the present invention comprises an antistatic agent comprising a mixed polymer of a phosphate and a dimethyl ester; And a polycarbonate resin. In addition, the polymer resin composition may further contain an anti-scratch property enhancer including cis-13 dococenoamide. Further, the polymer resin composition may further contain at least one selected from the group consisting of ethane ammonium, methane ammonium, propylene ammonium, ethane sulfoamide, methane sulfoamide, and mixtures thereof.

The phosphates may be any one selected from among ethyl phosphate, methyl phosphate, and trimethyl phosphate. The dimethyl ester mixture polymer may be a hexanone acid. In the polymer resin composition, the composition ratio of the phosphates to the antistatic agent may be 30% to 40%, and the composition ratio of the dimethyl ester mixture polymer may be 40% and 60% to 40%. In the polymer resin composition, the compounding ratio of the antistatic agent may be 0.1 to 1.0 phr. Here, the unit phr is an abbreviation of "parts per hundred resin" and can be understood as a part (parts by weight) of resin 100.

In the case of general phosphate-based antistatic agent, antistatic property is exhibited when 3% or more of the antistatic agent is added. In this case, however, transparency of the polycarbonate material is lowered to cause problems in color implementation. Conversely, if the content of the phosphate-based antistatic agent is lowered, the antistatic property is not realized. However, in the case of the antistatic agent to be used in the polymer resin composition according to an embodiment of the present invention, antistatic performance can be achieved even when a small amount is added. Because of the nature of the material, the salt type improves the dispersibility during melt mixing. The addition of a small amount does not deteriorate the transparency of the polycarbonate material, which is helpful for coloring. However, satisfactory performance can not be achieved in the case of less than 0.1 phr, and in the case of exceeding 1.0 phr, the antistatic performance is improved but the permeability is lowered.

The riding toy using the exterior material containing the polymer resin composition described above remarkably reduces the deposition of dust on the product, improves the scratch resistance, and improves the appearance quality.

Hereinafter, experimental examples of the present invention performed to facilitate understanding of the present invention will be described. Of course, the technical idea of the present invention is not limited by these experimental examples. Table 1 shows the results of measurement of antistatic effect, transmittance and scratch resistance according to the conditions of the experimental examples of the present invention.

In Table 1, the specimen of Example 1 was prepared by mixing 0.1 g of an antistatic additive containing 100 g of polycarbonate (PC) resin, trimethyl phosphate and hexanoleic acid, and 0.3 g of scratch additive containing cis-13 dococenoamide Extruder, and the specimen of Example 2 contained 0.2 g of antistatic additive comprising 100 g polycarbonate (PC) resin, trimethyl phosphate and hexanoleic acid, 0.3 g of scratch additive containing cis-13 dococenoamide And the specimen of Example 3 was prepared by mixing 0.3 g of an antistatic additive comprising 100 g of polycarbonate (PC) resin, trimethyl phosphate and hexanoleic acid, 10 g of a scratch additive comprising cis-13 dococenoamide 0.3 g, and the specimen of Example 4 was prepared by mixing 100 g of polycarbonate (PC) resin and trimethyl 0.5 g of an antistatic additive containing a surfactant and hexanoleic acid, 0.3 g of an scratch additive containing cis-13 dococenoamide, and the specimen of Example 5 was prepared by mixing 100 g of polycarbonate (PC ) Resin and 0.3 g of an anti-scratch additive comprising cis-13 dococenoamide, 0.7 g of an antistatic additive comprising a resin, trimethyl phosphate and hexanoleic acid, and a scratch additive comprising cis-13 dococenoamide, 1.0 g of an antistatic additive comprising a carbonate (PC) resin, trimethyl phosphate and hexanoleic acid, and 0.3 g of an scratch additive containing cis-13 dococenoamide was prepared through a twin screw extruder and the specimen of Example 7 (PC) resin, trimethyl phosphate and hexanobic acid were mixed with 100 g of the scratch additive And an antistatic additive (0.3 g) containing an antistatic additive. The specimen of Example 8 was prepared by mixing 100 g of a polycarbonate (PC) resin, an antistatic additive containing trimethyl phosphate and hexanoleic acid 0.5 g of the composition was prepared through a twin-screw extruder.

In Table 1, the specimen of Comparative Example 1 was prepared by blending a 100 g polycarbonate (PC) resin through a twin-screw extruder without mixing the antistatic additive and the scratch additive. The specimen of Comparative Example 2 contained 100 g polycarbonate (PC) 0.3 g of phosphate-based antistatic additive (ebex MV 1074, manufactured by Alkema, hereinafter the same) and 0.3 g of scratch additive were mixed. The specimen of Comparative Example 3 was prepared by mixing 100 g of a polycarbonate (PC) resin and a general phosphate- (PC) resin, 0.3 g of antistatic additive which is carbon black, and 0.3 g of scratch additive were mixed with each other. The test pieces of Comparative Example 4 were prepared by mixing 3.0 g of the antistatic additive and 0.3 g of the scratch additive, and 100 g of the polycarbonate The specimen of Comparative Example 5 was prepared by mixing 100 g of polycarbonate (PC) resin, 3.0 g of antistatic additive which is carbon black and 0.3 g of scratch additive.

In Table 1, the antistatic effect was evaluated by measuring a half-life period, which is a time at which the magnitude of the voltage was half after discharging the static electricity of 6 kV through corona discharge, and the permeability item was evaluated by putting the experimental additive into transparent polycarbonate material The scratch resistance was measured by using a Erickson scratch test equipment to make a scratch with a grid pattern at a constant pressure (10 N) and measuring the L value before and after the scratch evaluation to calculate a delta L value Respectively.

Referring to Table 1, polycarbonate (PC) resin; Antistatic additives including trimethyl phosphate and hexanoleic acid; And the scratch additive including cis-13 dococenoamide, the polymer resin material produced through the twin-screw extruder showed remarkable antistatic effect, excellent scratch resistance, and good permeability.

That is, by adding an antistatic function to the surface material of the polycarbonate for external parts of the riding toy, it was confirmed that the adsorption of contaminants due to static electricity may be lowered by the surface resistance value index. Furthermore, it was confirmed that scratch characteristics, which is a weak point of the polycarbonate material, were improved, and it was confirmed that even after the application of the additive, the reduction of the transmittance value, which can confirm the coloring property of the material, was insufficient. Therefore, it is confirmed that the material according to the embodiments of the present invention can prevent contamination of the riding toys by the dust and improve the scratch resistance at the same time.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (7)

An antistatic agent comprising a mixed polymer of a phosphate and a dimethyl ester; And
Polycarbonate resin;
Wherein the polymeric resin composition is a polymeric resin composition. The method according to claim 1,
Wherein the phosphate is any one selected from the group consisting of ethyl phosphate, methyl phosphate, and trimethyl phosphate. The method according to claim 1,
Wherein the dimethyl ester mixture polymer is hexanoleic acid. The method according to claim 1,
Wherein the composition ratio of the phosphates in the antistatic agent is 30% to 40%, and the composition ratio of the dimethyl ester mixture polymer is 40% and 60% to 40%. The method according to claim 1,
13. A polymeric resin composition, further comprising an anti-scratch property enhancer comprising cis-13 dococenoamide. The method according to claim 1,
Wherein the compounding ratio of the antistatic agent is 0.1 to 1.0 phr (parts per hundred resin). A riding toy comprising a casing made of the polymer resin composition according to any one of claims 1 to 6.

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