KR20010052422A - Polymer composition comprising natural stabilizer - Google Patents

Abstract

PURPOSE: A polymer composition containing natural stabilizers is provided to remove a component harmful to human and to enhance the anti-oxidizing effect and the anti-bacterial effect. CONSTITUTION: A polymer composition containing stabilizers does not use any existing synthetic stabilizers which are toxic or may be toxic to human and includes natural flavonoid and/or natural phenol and/or natural polyphenols. The natural stabilizers uses 0.01-10 weight% about the total weight of the polymer composition.

Description

Polymer composition containing a natural stabilizer {POLYMER COMPOSITION COMPRISING NATURAL STABILIZER}

Conventionally, alkylphenols and bisphenol-based synthetic chemicals have been mainly used as stabilizers, such as antioxidants, in the production of high molecular materials, particularly plastics, rubber, fibers and the like. For example, butyrate hydroxyanisole (BHA), butyrate hydroxytoluene (BHT), propyl gallate (PG), dodecyl gallate (DG), tert-butyl hydroquinone (TBHQ), and the like. Alkyl phenol compounds and other Irganox-based bisphenol compounds. Such synthetic chemicals are excellent in their chemical activity as stabilizers for the preparation and processing of high molecular materials, but due to the toxicity of these compounds themselves, it is inevitable to act as harmful elements to the human body. Unlike inorganic materials, these synthetic chemicals form a dispersed phase when they are kneaded with high molecular materials.In addition, synthetic chemicals have a very low molecular weight and very high fluidity. When used, it is relatively easy to elute, thereby causing various problems due to oral toxicity. This problem is particularly serious when the polymer molded products are used as food packaging and cosmetic containers, and children's toys or other household products.

According to the toxicity and safety data for the existing synthetic stabilizers as described above, there is no synthetic stabilizer theoretically harmless to the human body. Therefore, its amount of use as an additive needs to be strictly regulated. In particular, if you want to manufacture food packaging products or toys that can be in direct contact with food and the human body needs to be more careful. For example, in the case of beverage containers or children's toys, the use of more strict regulations are required.

At the same time, voices of environmental groups' concern about environmental hormones have increased worldwide. Environmental hormones have been known as exogenous endocrine disruptors, and chemical substances with chemical structures similar to that of female hormone estrogen. There are about 70 environmental hormones known to date, and representative ones are dioxins, polychlorinated biphenyls, crawldenes, dititi, alkylphenols, bisphenols, phthalic acid esters, styrene dimer-trimers, and the like.

Among the environmental hormones described above, alkylphenols, bisphenols, styrene dimer-trimers, and the like are associated with high molecular materials such as plastics. In the case of styrene-dimer-trimer, it is produced during the manufacturing process of expanded styrene, and in the case of alkylphenol and bisphenol, it is used during the manufacturing process of plastics as an additive for polymer production and processing. In particular, most of the additives used as process aids such as antioxidants in the preparation and processing of polymer materials have a chemical structure of alkyl phenol and secondary bisphenol. In this case, the negative synergistic effect of these compounds and the like is worth processing. In particular, in the case of polystyrene molded products that are used in various food packaging containers, two or more types of substances, such as styrene dimer-trimer and alkyl phenol and bisphenol added during the manufacturing process as stabilizers, act as a complex environment. The problem is very serious when compounds cause a negative synergistic effect of a combination of two or more of them.

In order to remove such harmful elements to the human body from various polymer application products such as various plastics, in the past, in the step of polymerizing the polymer, efforts have been made to minimize the amount of the polymerization catalyst and the unreacted residual monomer, and the molding processing of these polymer materials It is true that various forms of efforts have been made as a colorant to be used for producing children's toys and the like using pigments and the like, which have been approved for food use. However, not only pigments but also various kinds of additives are used in molding a polymer material. In addition to pigments, heat-resistant, antioxidants, lubricants, fillers and the like are used in a wide variety of forms depending on the functional requirements of the final product. Among these additives, the physiological and chemical properties of lubricants and fillers are not a problem, but in the case of pigments and stabilizers, their physiological and chemical properties need to be considered in depth.

However, conventionally, such additives including synthetic stabilizers have been left unused, even in small amounts, without further consideration of human hazards. Stabilizers added to polymer materials such as plastics must have heat resistance to withstand harsh conditions such as high temperatures in the processing of polymer materials, in addition to effects such as oxidation prevention, and at the same time meltability of polymer materials or physical properties as other molding materials. And it should be a material that does not have an adverse effect on the appearance, such as the color of the molded article, because there was a technical limitation in the development of artificial synthetic material without meeting the requirements and human toxicity.

Summary of the Invention

In order to overcome the problems caused by the use of artificial synthetic stabilizers as described above, the inventors of the present invention prepared a variety of polymeric materials, such as plastics, obtained from natural materials having excellent effects as stabilizers without causing problems such as toxicity and endocrine disruption. And the results of intensive research to fundamentally solve the harmful effects of human body from the final polymer application by using it as processing stabilizer. Apple, persimmon and persimmon leaf, green tea, coffee beans, grapes, sesame seeds, cacao, jack fruit and rose marine Natural flavonoids or natural phenols and polyphenol-based compounds obtained from natural materials such as these have excellent anti-oxidation effects and excellent physical properties as stabilizers such as heat resistance, and thus can be used in place of conventional alkyl and bisphenol-based stabilizers. The present invention was completed. On the other hand, the natural phenol and polyphenol-based materials are not only anti-oxidation effect but also excellent antibacterial and bacteriostatic effect can be expected antimicrobial and bacteriostatic effect of the final polymer processed product using them. This also has the effect of improving the function of the resin without lowering the original physical properties of the resin.

That is, an object of the present invention is to provide a polymer composition using as a stabilizer a natural compound having excellent effects as a desired stabilizer without any harmful effects on human contact or human inhalation.

The present invention relates to a polymer composition comprising a natural compound as a stabilizer, and more particularly, to a polymer composition prepared using a stabilizer containing a natural flybonoid or a natural phenol, a polyphenol compound, and the like.

The polymer composition of the present invention is characterized by including a stabilizer containing a natural flavonoid or a natural phenol and a natural polyphenolic compound without using a conventional synthetic stabilizer as a stabilizer.

As a natural material-derived stabilizer that can be used in the present invention, natural flavonoid compounds, natural phenols and polyphenol compounds may be used. Among these, natural flavonoid compounds include peanut and cotton seed extracts, chaff extracts and chia seed extracts. Natural phenolic and polyphenolic compounds include apple extract, green tea extract, coffee bean extract, rosemary extract, cacao extract, jack fruit extract, persimmon and persimmon leaf extract, licorice extract, sunflower seed extract, mustard And rape seed extract, sesame extract, grape extract and other natural tannin extract.

Generally, as a natural material, there are many substances to prevent the deterioration or decay of food, but most of them are used in frozen food, refrigerated food, or cooking, and most of them are used at relatively low temperature below 100 ° C. This is due to their poor heat resistance. However, the above-mentioned natural stabilizer of the present invention is particularly excellent in heat resistance, and has a feature of maintaining a function as a stabilizer even at a relatively high temperature (about 200 ° C) of the resin processing conditions.

In the present invention, these natural stabilizers may be used alone, and in some cases, two or more thereof may be used in combination. The amount of natural stabilizer used depends on the type of polymer, processing conditions, and processing method. For example, when the melting temperature of the polymer is low, the melt viscosity is low, and the processing time is relatively short, mainly when short-term stability is required, the amount of use may be sufficient as about 0.01% by weight, and the melting temperature of the polymer is relatively low. In the case of high or high melt viscosity and very long processing time, it may be necessary to prescribe a considerable amount of stabilizer in order to smooth the processing of the polymer or to provide long-term stability. Although the effect as a stabilizer can be obtained, deterioration of the physical properties of the secondary polymer composition is inevitable. Therefore, considering the physical properties of the polymer composition and the effect as a stabilizer, the amount of the natural stabilizer of the present invention is preferably 0.01 to 10% by weight based on the total weight of the polymer composition.

Such natural stabilizers may be used at any stage in the preparation of the polymeric material, but are preferably used in the molding process. In the case of polymer molding processing, for example, injection molding, extrusion molding, compression molding and the like can be used in various ways. However, in some cases, a method of forming a pretreatment master batch before use in molding processing is also a preferred method. Is one of.

According to the present invention using a natural stabilizer that is completely harmless to the human body, as well as human safety, there is an advantage that can further enhance the performance as a food packaging container by enhancing the deodorization performance, antibacterial properties of the final product.

That is, in the case of the additive of the prior art, but only has a function as a stabilizer, the stabilizer derived from the natural compound of the present invention can be seen that in addition to the harmless to the human body, its deodorization, antibacterial properties are further reinforced compared to the existing technology. . In the existing case, in order to give antimicrobial and deodorizing properties to a polymer material, a new additive should be added to obtain a desired performance. Even in this case, the toxicity was severe due to the use of silver compounds or iodine compounds. In the case of the present invention, it is excellent in performance as a stabilizer, and additionally has antimicrobial and deodorizing performance, compared with existing stabilizers, while not harmful to the human body. The feature of the present invention has been proposed a way to solve the human body toxicity, which is a fundamental limitation of the existing technology, and also maximized the function as a food packaging container by giving a new functionality of antibacterial, deodorant to the polymer material.

Thermoplastic and thermosetting plastics can be used as the plastic compound to be used in the present invention. Thermosetting polymer materials include phenol resins, urea resins, melamine resins, furan resins, alkyd resins, unsaturated polyesters, diaryl phthalates, epoxy resins, silicon resins, polyurethane resins, and the like. Thermoplastic polymers include vinyl chloride resin, vinylidene chloride resin, vinyl acetate resin, polyvinyl alcohol resin, polyvinyl acetal resin, polystyrene resin, ABS resin, methacryl resin, polyethylene resin, polypropylene resin, fluorine resin, polyamide Resins, polyacetal resins, polycarbonate resins, polyphenylene oxide resins, polysulfone resins, celluloids, acetate fiber resins, polyester resins, and the like. In the present invention, the above-mentioned resins may be used alone, and in the case of two or more combinations, the natural stabilizer of the present invention may be used. As the polymer material usable in the present invention, rubber is also included, and rubber includes butadiene rubber, natural rubber, esbial rubber, enbial rubber, silicone rubber, and the like.

To the polymer composition of the present invention, conventional additives such as lubricants, pigments, ultraviolet absorbers, flame retardants, fillers, antistatic agents and the like may be added and used in combination.

Even when using the lubricant in the present invention, it is possible to use both the internal lubricant and the external lubricant that can be used generally. Typically, a metal of fatty acid can be used. For example, stearic acid is a fatty acid, and calcium, magnesium, zinc is mentioned as a metal. In some cases, lubricants such as IBS can be used.

As the filler that can be used in the present invention, any filler that can be implemented in the prior art can be used, for example, talc, calcium carbonate (CaCO ₃ ), cray (CLAY), and the like. If you put color in, it is irrelevant. Unlike other cases, in the case of color, since natural compounds usually have their own color, coloration should be done with some care, but this is not a technical problem. In the case of color, it is possible to realize all the colors of the existing technology, and even if it is to be applied as a master batch, all existing technologies, such as selecting the matrix (MATRIX) in consideration of compatibility with the target resin, can be implemented. Can be. These additives can mainly achieve the desired purpose by adding a small amount during the molding process, in some cases, it is possible to make and use the master batch (MASTER BATCH) in advance. In the case where the resin is to be molded, it is more economical to process the various additives added thereto.

In the case where the polymer composition of the present invention is to be used as a food packaging container, it may be considered to preferably suppress the use of various artificial synthetic additives other than the compound as an additive. Except in special cases, in the case of food packaging and the like, it is preferable to use all additives proven to be harmless to the human body. Therefore, the best composition to implement the present invention is to use other additives other than the stabilizer derived from natural materials. It is not.

In the present invention, in the case of molding, in general, the extrusion can be used without any distinction from the existing technology. In addition, special twin-screw extruders are to be used where special mixing is necessary. When kneading the resin, a single-screw extruder can be used if strong kneading is not required.If you want to manufacture a masterbatch, you can use a well-known kneader or banbury mixer, single-screw extruder, or twin-screw extruder. Which one is used depends on the degree of kneading required.

Hereinafter, the present invention will be described in detail by way of Examples and Comparative Examples. However, the scope of the present invention is not limited by the embodiment.

Preparation Example 1 Preparation of Apple Extract

After washing, crushing, crushing, and crushing the apple pulp, the fruit obtained by enzymatic treatment was treated with pectinase, and the filtered juice was adsorbed using a column. Clean. After extracting with 65% ethanol to obtain a reduced pressure concentrate and then spray-dried to obtain a powdered apple extract.

In the obtained apple extract, the polyphenol content is 50% or more, and the polyphenol is composed of tannin, caffeic acid, chlorogenic acid, paracoumaric acid, floretine, floridine, catechin, epicatechin and the like.

If necessary, starch, lactose, dextrin, etc. may be mixed with the extract.

Preparation Example 2 Preparation of Green Tea Extract

The green tea leaves were extracted with boiling water for 30 minutes in boiling water and filtered using activated carbon. The filtrate was concentrated by distillation under reduced pressure and spray dried to obtain a green tea extract in powder form.

To the obtained green tea extract, starch, lactose, dextrin and the like are mixed and used.

Preparation Example 3 Preparation of Coffee Extract

After crushing the raw coffee beans to the size of about 5㎜, the foreign matters such as discolored bean was removed and screened, extracted with deionized water, and then powdered coffee extract was obtained by spray drying.

In the obtained coffee extract, the polyphenol content is 50% or more, and the polyphenol is composed of chlorogenic acid, tannin and the like.

If necessary, starch, lactose, dextrin, etc. may be mixed with the extract.

Preparation Example 4: Rosemary Extract

Remove the odor through steam distillation from the dried rosemary, and after drying it again, extracted with a concentrated alcohol solution such as 60% or more ethanol, concentrated under reduced pressure, extracted with a diluted alcohol solution, filtered again, washed with water and dried to extract the rosemary extract Got it.

In the obtained rosemary extract, the polyphenol content is 50% or more, and the polyphenol is composed of chlorogenic acid, tannin and the like. If necessary, starch, lactose, dextrin, etc. may be mixed with the extract.

Preparation Example 5 Cacao Extract

Dried cacao beans and cacao shells were extracted for 24 hours using a 60% acetone solution. The obtained extract was centrifuged to obtain a supernatant and a precipitate. 60% acetone was added to the obtained precipitate and the above extraction process was repeated four times. Each obtained supernatant was concentrated and filtered to remove chlorophyll, which was made into 2 L of concentrate, which was extracted with acetone to obtain an extract of cacao.

In the obtained cacao extract, the polyphenol content is 50% or more, and the polyphenol is composed of high molecular weight polyphenols such as chlorogenic acid and tannin. If necessary, starch, lactose, dextrin, etc. may be mixed with the extract.

Preparation Example 6 Jack Fruit Leaf Extract

60 g of acetone was added to 1000 g of Jack Fruit leaves, and the mixture was immersed at room temperature for 24 hours, followed by centrifugation (3,000 rpm, 30 minutes) to obtain a supernatant and a precipitate. Then, 60% acetone was added to the precipitate under the same conditions. Extraction was repeated four times. Each supernatant was collected, concentrated and filtered to remove chlorophyll, concentrated to 2 L, and extracted with acetone to obtain an extract of Jack Fruit.

In the obtained Jack Fruit extract, the content of condensed tannins is 50% or more, and the polyphenol is composed of catechins. If necessary, starch, lactose, dextrin, etc. may be mixed with the extract.

Preparation Example 7: Persimmon Leaf Extract

60% acetone was added to 1000 g of dried persimmon leaves, followed by immersion at room temperature for 24 hours, followed by centrifugation (3,000 rpm, 30 minutes) to obtain a supernatant and a precipitate. Again 60% acetone was added to the precipitate and extracted four times under the same conditions. Each supernatant was collected, concentrated and filtered to remove chlorophyll, concentrated to 2 L, and extracted with acetone to obtain an extract of persimmon leaves.

In the obtained persimmon leaf extract, the content of condensed tannins is 50% or more, and the polyphenol is composed of catechins such as (+) gallocatechin and prodelpindine. If necessary, starch, lactose, dextrin, etc. may be mixed with the extract.

The physical properties, extrusion conditions, injection conditions, and tensile strength tests of the resins used in the following examples and tests are as follows.

Melt Index (MI) of Resin (ASTM D1238)

division PP PE HIPS ABS unit MI 28.9 0.3 3.0 1.8 g / 10min Measuring temperature 230 190 190 230 ℃ Load 3.8 2.16 5 5 Kg Measuring time 6 5 6 6 min

* PP: Polypropylene, PE: Polyethylene,

HIPS: High impact polystyrene, ABS: ABS resin

Extrusion test

1. Extruder: Jinwoo yeon 40∮

2. Extrusion condition (unit: ℃)

division Dice C4 C3 C2 C1 PP 200 195 185 185 175 PE 190 180 175 175 165 PS 200 190 180 180 170 ABS 200 190 180 180 170

Injection test

1. Injection machine

LG Machinery 140ENⅡ (10oz)

2. Injection condition (unit: ℃)

division Dice C4 C3 C2 C1 PP 200 195 185 185 175 PE 190 180 175 175 165 PS 200 190 180 180 170 ABS 200 190 180 180 170

Tensile Strength Test

1. Measuring equipment: INSTRON4304

2. Measurement condition

Cross head speed (15 mm / min)

Example 1

After weighing 5 parts by weight of calcium stearate as lubricant and 5 parts by weight of apple extract of Preparation Example 1 as stabilizer, 5000 parts by weight of polypropylene was mixed well using a tumbler mixer and extruded using a single screw extruder. After the extrusion and assembly process, the water was removed and then injected using an injection machine. Tensile strength was measured in accordance with ASTM D638 for the injection (I) without injection in the injection molding machine and the injection (II) after injection for 5 minutes in the injection molding machine to test the effect as a process aid.

Example 2

The same procedure as in Example 1 was conducted except that polyethylene was used instead of polypropylene.

Example 3

The same procedure as in Example 1 was conducted except that high impact polystyrene was used instead of polypropylene.

Example 4

The same procedure as in Example 1 was carried out except that ABS resin was used instead of polypropylene.

Example 5

5 parts by weight of calcium stearate as lubricant and 5 parts by weight of green tea extract of Preparation Example 2 as a stabilizer were mixed well using a tumbler mixer after weighing, and extruded using a single screw extruder. After the extrusion and assembly process, the water was removed and then injected using an injection machine. Tensile strength was measured in accordance with ASTM D638 for the injection (I) without injection in the injection molding machine and the injection (II) after injection for 5 minutes in the injection molding machine to test the effect as a process aid.

Example 6

The same procedure as in Example 5 was carried out except that polyethylene was used instead of polypropylene.

Example 7

The same procedure as in Example 5 was carried out except that high impact polystyrene was used instead of polypropylene.

Example 8

The same procedure as in Example 5 was carried out except that ABS resin was used instead of polypropylene.

Example 9

5 parts by weight of calcium stearate as lubricant and 5 parts by weight of coffee extract of Preparation Example 3 as a stabilizer were mixed well using a tumbler mixer after weighing, and extruded using a single screw extruder. After the extrusion and assembly process, the water was removed and then injected using an injection machine. Tensile strength was measured in accordance with ASTM D638 for the injection (I) without injection in the injection molding machine and the injection (II) after injection for 5 minutes in the injection molding machine to test the effect as a process aid.

Example 10

The same procedure as in Example 9 was carried out except that polyethylene was used instead of polypropylene.

Example 11

The same procedure as in Example 9 was carried out except that high impact polystyrene was used instead of polypropylene.

Example 12

The same procedure as in Example 9 was carried out except that ABS resin was used instead of polypropylene.

Example 13

5 parts by weight of calcium stearate as a lubricant and 5 parts by weight of rosemary extract of Preparation Example 4 as a stabilizer were mixed well using a tumbler mixer after weighing, and extruded using a single screw extruder. After the extrusion and assembly process, the water was removed and then injected using an injection machine. Tensile strength was measured in accordance with ASTM D638 for the injection (I) without injection in the injection molding machine and the injection (II) after injection for 5 minutes in the injection molding machine to test the effect as a process aid.

Example 14

The same procedure as in Example 13 was carried out except that polyethylene was used instead of polypropylene.

Example 15

The same procedure as in Example 13 was carried out except that high impact polystyrene was used instead of polypropylene.

Example 16

The same procedure as in Example 13 was carried out except that ABS resin was used instead of polypropylene.

Example 17

After weighing 5 parts by weight of calcium stearate as a lubricant and 5 parts by weight of cacao extract of Preparation Example 5 as a stabilizer, 500 parts by weight of polypropylene was mixed well using a tumbler mixer and extruded using a single screw extruder. After the extrusion and assembly process, the water was removed and then injected using an injection machine. Tensile strength was measured in accordance with ASTM D638 for the injection (I) and the injection (II) for 5 minutes without staying in the injection molding machine, and the effect as a process aid was tested in accordance with ASTM D638.

Example 18

The same procedure as in Example 17 was carried out except that polyethylene was used instead of polypropylene.

Example 19

The same procedure as in Example 17 was carried out except that high impact polystyrene was used instead of polypropylene.

Example 20

The same procedure as in Example 17 was carried out except that ABS resin was used instead of polypropylene.

Example 21

After weighing 5 parts by weight of calcium stearate as lubricant and 5 parts by weight of Jack Fruit leaf extract of Preparation Example 6 as a stabilizer, the mixture was well mixed using a tumbler mixer, and a single screw extruder was used. Extruded. After the extrusion and assembly process, the water was removed and then injected using an injection machine. Tensile strength was measured in accordance with ASTM D638 for the injection (I) without injection in the injection molding machine and the injection (II) after injection for 5 minutes in the injection molding machine to test the effect as a process aid.

Example 22

The same procedure as in Example 21 was carried out except that polyethylene was used instead of polypropylene.

Example 23

The same procedure as in Example 21 was carried out except that high impact polystyrene was used instead of polypropylene.

Example 24

The same procedure as in Example 21 was carried out except that ABS resin was used instead of polypropylene.

Example 25

After weighing 5 parts by weight of calcium stearate as a lubricant and 5 parts by weight of persimmon leaf extract of Preparation Example 7 as a stabilizer, 5000 parts by weight of polypropylene was mixed well using a tumbler mixer and extruded using a single screw extruder. After the extrusion and assembly process, the water was removed and then injected using an injection machine. Tensile strength was measured in accordance with ASTM D638 for the injection (I) without injection in the injection molding machine and the injection (II) after injection for 5 minutes in the injection molding machine to test the effect as a process aid.

Example 26

The same procedure as in Example 25 was carried out except that polyethylene was used instead of polypropylene.

Example 27

The same procedure as in Example 25 was carried out except that high impact polystyrene was used instead of polypropylene.

Example 28

The same procedure as in Example 25 was carried out except that ABS resin was used instead of polypropylene.

Comparative Example 1

In Example 1, instead of a natural stabilizer, Irganox 1010 manufactured by Ciba-Gaigy Corporation was used as an existing artificial synthetic antioxidant.

Comparative Example 2

In Example 2, instead of the natural stabilizer, Irganox 1010 manufactured by Ciba-Gaigy Corporation was used as an existing artificial synthetic antioxidant.

Comparative Example 3

In Example 3, instead of a natural stabilizer, Irganox 1076 manufactured by Ciba-Gaigy Corporation was used as an existing artificial synthetic antioxidant.

Comparative Example 4

In Example 4, instead of a natural stabilizer, Irganox 1076 manufactured by Ciba-Gaigy Corporation was used as an existing synthetic synthetic antioxidant.

Tensile strength measurement result

division I Ⅱ Example 1 Example 2 Example 3 Example 4 300101290495 29497287482 Example 5 Example 6 Example 7 Example 8 297103290496 29299283487 Example 9 Example 10 Example 11 Example 12 286101280501 28496278492 Example 13 Example 14 Example 15 Example 16 29899270496 29596267494 Example 17 Example 18 Example 19 Example 120 29198265495 29095260490 Example 21 Example 22 Example 23 Example 24 29397263497 29196261496 Example 25 Example 26 Example 27 Example 28 29097264496 28696263493 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 308107295501 304101289492

* Ⅰ: Injection without staying in the injection machine

Ⅱ: Injection after staying in the injection machine for 5 minutes

From the above results, it can be seen that the natural stabilizer of the present invention exhibits the same or higher level of process aid as the conventional artificial synthetic stabilizer, and thus can be used as a process aid in place of the existing synthetic chemicals. In the polymer composition, it is possible to fundamentally eliminate human harmful factors.

Antimicrobial test

In order to determine the antimicrobial effect of the natural stabilizer used in the polymer composition of the present invention, the antimicrobial test was conducted using the apple extract of Preparation Example 1 as follows, and the results are shown in Table 3 below.

Test Methods :

① Physiological saline solution (concentration: 2,000ppm) of the apple extract of Preparation Example 1 was prepared as a test solution.

② The test solution was added to the test specimen and stored at 35 ° C., and the viable cell count was measured after 6 hours and 24 hours.

Test bacteria:

Methicillin Resistant Yellow Staphylococcus (MRSA). … Causes of infection in hospital

Propionbacterium acnes… … Acne causing bacteria

Legionella pneumophila… … Fungi parasitic in bath for 24 hours

Escherichia coli (blood type O-157: H7). … Escherichia coli

Test result :

Table 3: Result of measurement of viable cell count of test bacteria added to test solution

Specimen Viable cell count (/ ml) Early 6 hours later 24 hours later MRSA Test solution 7.8 × 10 ⁴ <10 <10 contrast 7.8 × 10 ⁴ 2.9 × 10 ⁴ 10 ⁴ P.acnes Test solution 4.3 × 10 ⁵ <10 <10 contrast 4.3 × 10 ⁵ 2.1 × 10 ⁵ 10 ⁵ L. pneumophila Test solution 3.1 × 10 ⁵ <10 <10 contrast 3.1 × 10 ⁵ 8.0 × 10 ⁴ 6.8 × 10 ⁴ Escherichia coli Test solution 4.7 × 10 ⁵ <10 <10 contrast 4.7 × 10 ⁵ 1.8 × 10 ⁶ 2.7 × 10 ⁶

Antimicrobial results of apple extract at 2,000ppm concentration were confirmed against 4 strains.

From the above results, the natural stabilizer used in the rubber composition of the present invention exhibits a stabilizing effect as a process aid similar to that of the additives according to the existing technology. This paper suggests a way to fundamentally solve various forms of human harmful factors. In addition, the polymer composition of the present invention may exhibit an effect having antimicrobial properties due to the antibacterial effect of the natural stabilizer used.

Claims (4)

A polymer composition for producing a molded article, comprising 0.01 to 10% by weight of a natural flavonoid or a stabilizer containing a natural phenol and a natural polyphenol. The method of claim 1 wherein the natural stabilizer is peanut extract, cotton seed extract, chaff extract, chia seed extract, apple extract, green tea extract, coffee beans extract, rosemary extract, cacao extract, Jack Fruit leaf extract, persimmon or A polymer composition, characterized in that at least one selected from the group consisting of persimmon leaf extract, licorice extract, sunflower seed extract, mustard seed extract, rape seed extract, sesame extract and grape extract. The polymer composition of claim 1, wherein the polymer material is a thermoplastic or thermosetting resin. The polymer composition of claim 1, wherein the polymer material is rubber.