WO2021132822A1 - Method for preparing rubber composition, rubber composition prepared thereby, and tire manufactured using same - Google Patents

Abstract

The present invention relates to a method for preparing a rubber composition which can improve physical properties of a final product. In order to achieve the purpose of the present invention, the present invention comprises a step of preparing a polymer-dispersed rubber composition in which a polymer is dispersed in a solution phase in rubber and provides a method for preparing a rubber composition, wherein the step of preparing a polymer-dispersed rubber composition comprises, after polymerization of a rubber composition containing a monomer, a solvent, and a catalyst in a rubber preparation processing step, collecting a residual monomer, and introducing a polymer to a remaining rubber solution from which the residual monomer has been collected. Application of the rubber composition thus prepared, to a tire tread composite can improve durability, grip properties, low balanced rotation resistance, thus achieving effects of excellent braking and fuel-efficient characteristics, and improving abrasive wear performance.

Description

Manufacturing method of rubber composition, rubber composition manufactured by same method, and tire manufactured using same

The present invention relates to a method for producing a rubber composition capable of improving the physical properties of a final product.

In general, there are various products using rubber, such as tires, shoe soles, belts, hoses, sheets, sealants, which must have excellent durability, and adhesives, which must have excellent adhesion. .

In order to finally complete these products, it is common to directly inject processing aids such as reinforcing materials and additives together with raw material rubber into a compounding machine and mix them in a bulk state, or to produce a final rubber composite product by mixing them together after manufacturing a master batch. .

For example, with respect to the improvement of the rubber composition for a tire tread, conventionally In Korean Patent Registration No. 10-1276654, a master batch elastic body comprising 50 to 150 parts by weight of a reinforcing material and 50 to 150 parts by weight of polybutene (PIB) with respect to 100 parts by weight of raw rubber, a rubber composition for tire tread comprising the same, and The present invention relates to a tire manufactured using the same. The master batch elastic body is prepared by including polybutene (PIB), which has been used as free oil in the existing rubber composition for tire tread, in the master batch elastic body, and by using the polybutene in the tread rubber composition. It is introduced that it can increase the overall content of (PIB), solve the problem of processability caused by excessive use in the rubber composition for tire tread, and improve the grip performance of the tire and maintain the grip performance.

However, the above method uses raw rubber, a filler, and polybutene (PIB) to prepare an elastic body in the form of a master batch, for that reason, to increase the dispersibility of the filler, but this method also uses polybutene (PIB) as free oil It is difficult to handle liquid polybutene (PIB) with adhesive properties as in the case of using it as an adhesive, and it takes a lot of time and energy to produce a master batch type elastomer containing 50 phr or more of polybutene (PIB). do.

Therefore, there is a need for a new manufacturing method that improves the physical properties of the final rubber product while simplifying the process to improve the performance without increasing the manufacturing cost.

An object of the present invention is to provide a method for manufacturing a rubber composition capable of greatly improving the physical properties of a final product obtained while minimizing changes in existing equipment due to a simple process.

In addition, another object of the present invention is to provide a rubber composition having improved physical properties required depending on the product.

Another object of the present invention is to provide a tire with improved physical properties.

In order to achieve the object of the present invention, the present invention is a method for preparing a polymer dispersed rubber composition in which a polymer is dispersed in a solution phase in rubber, and in the rubber manufacturing process step, a monomer, a solvent and a catalyst comprising a recovering residual monomers after polymerizing the rubber composition; and adding a polymer to the rubber solution remaining after recovering the residual monomer and uniformly dispersing in the solution phase; It provides a method for producing a rubber composition comprising a. According to an embodiment of the present invention, the polymer is a C _4-9- based polymer and has a weight average molecular weight of 300 to 20,000 g/mol, and 0.1 to 100 phr (parts per hundred rubber) is possible with respect to the rubber content. If it is, it is preferable that it is added at 1 to 50 phr.

According to an embodiment of the present invention, the polymer is preferably a C4, C5, C9-based polymer.

According to an embodiment of the present invention, the monomer is preferably at least one selected from the group consisting of styrene, butadiene, isobutylene, isoprene, ethylene and propylene.

In one embodiment of the present invention, the rubber is emulsion styrene-butadiene rubber (ESBR), solution styrene-butadiene rubber (SSBR), styrene-butadiene-styrene rubber (SBS), styrene-ethylene-butadiene-styrene rubber (SEBS), It is preferably a polyolefin elastomer (POE) such as butadiene rubber (BR), butyl rubber (IR), isoprene-isobutylene rubber (IIR) or ethylene propylene rubber (EPM), ethylene propylene diene rubber (EPDM).

According to an embodiment of the present invention, the rubber composition is preferably used as a rubber composition for a tire tread, a rubber composition for a sealant, and a rubber composition for a hot-melt adhesive.

In order to achieve another object of the present invention, the present invention provides a rubber composition for a tire tread comprising the rubber composition prepared according to the present invention.

Another object of the present invention is to provide a tire manufactured by using the rubber composition for a tire tread according to the present invention.

The rubber composition prepared according to the present invention can increase the physical properties of the final rubber product.

In addition, the tire manufactured with the rubber composition for a tire tread manufactured according to the present invention has improved processability, grip property (wet road traction), low fuel efficiency, and abrasion performance.

In addition, the manufacturing method of the rubber composition according to the present invention can significantly improve the physical properties of rubber products while using existing equipment, so that the unit cost can be very low and the environment is excellent.

The present invention will be described in more detail below, but this is for the purpose of explanation of the present invention and should not be construed as limiting the scope of the present invention.

The present invention includes the step of preparing a polymer liquid dispersion rubber composition in which a polymer is dispersed in a solution phase in rubber, wherein the production step of the polymer liquid dispersion rubber composition comprises a monomer, a solvent and a catalyst in the rubber manufacturing process step Recovering the residual monomer after polymerizing the rubber composition, adding a polymer to the rubber solution remaining after recovering the residual monomer and uniformly dispersing it in the solution phase, solidification by removing the solvent from the rubber/polymer mixed solution, and drying , It provides a method for producing a rubber composition comprising a molding process step.

<Polymer liquid dispersion rubber composition>

The difference between the present invention and the prior art lies in the step of adding the polymer and the properties of the polymer to be added.

That is, in the present invention, the polymer is not directly mixed with the rubber when the rubber composition is manufactured, but the polymer is added in the rubber solvent remaining after removing the residual monomer remaining after the reaction in the rubber manufacturing process step, and the polymer is dispersed in the rubber solution. It has to go through the steps that exist in the form.

As described above, desired physical properties can be obtained when the final rubber product is manufactured only when the rubber is manufactured using the rubber composition in which the polymer is dispersed in the liquid phase.

As the solvent, a hydrocarbon-based organic solvent such as normal hexane, cyclohexane, or mixed heptane may be mainly used.

Here, the final desired physical properties may vary depending on the type of the final rubber product. For example, when a tire tread is a final rubber product, excellent braking properties and low fuel efficiency are required, so durability, grip properties, and low rolling resistance are important.

Therefore, in the present invention, when manufacturing a tire tread, a rubber composition for manufacturing a tire tread must be prepared. When manufacturing the rubber composition for a tire tread, a polymer, for example, polybutene (PIB) is liquid-dispersed in the rubber used. to prepare a polybutene (PIB) liquid dispersion rubber composition. As the rubber that can be used to manufacture the tire tread, synthetic rubber or a mixture of natural rubber and synthetic rubber may be used.

The natural rubber may be a general natural rubber or a modified natural rubber.

Any general natural rubber may be used as long as it is known as natural rubber, and the country of origin is not limited. The natural rubber mainly includes cis-1,4-polyisoprene, but may also include trans-1,4-polyisoprene according to required properties. Therefore, the natural rubber includes a cloth containing cis-1,4-polyisoprene as a main component.

In addition to the ointment rubber, natural rubber containing trans-1,4-isoprene as a main component, such as Valata, which is a type of rubber of the Sapotaceae family from South America, may also be included.

The modified natural rubber means that the general natural rubber is modified or refined. For example, examples of the modified natural rubber include epoxidized natural rubber (ENR), deproteinized natural rubber (DPNR), and hydrogenated natural rubber.

In the above, the synthetic rubber is styrene butadiene rubber (SBR), modified styrene butadiene rubber, butadiene rubber (BR), modified butadiene rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, silicone rubber, nitrile rubber, hydrogenated nitrile rubber, Nitrile Butadiene Rubber (NBR), Modified Nitrile Butadiene Rubber, Styrene Butadiene Styrene Rubber (SBS), Styrene Ethylene Butylene Styrene (SEBS) Rubber, Ethylene Propylene Rubber (EPM), Ethylene Propylenediene (EPDM) Rubber, Hypalon Rubber, Chloroprene Rubber, ethylene vinyl acetate rubber, acrylic rubber, hydrin rubber, vinyl benzyl chloride styrene butadiene rubber, bromomethyl styrene butyl rubber, maleate styrene butadiene rubber, carboxylate styrene butadiene rubber, epoxy isoprene rubber, ethylene propylene maleate rubber, carboxylate It may be any one selected from the group consisting of acid nitrile butadiene rubber, brominated polyisobutyl isoprene-coparamethylstyrene (BIMS), and combinations thereof.

The polymer may be polybutene (PIB), preferably polybutene having a number average molecular weight of 150 to 5,000 g/mol as highly reactive polybutene (PIB). High-reactivity polybutene (PIB) is advantageous in terms of durability compared to conventional polybutene (PIB) because the carbon-carbon double bond is mainly located at the end of polybutene (PIB), so the bondability with the raw rubber increases during the reaction. because it works As such, polymers can be used differently depending on the desired physical properties of the final rubber product.

According to an embodiment of the present invention, the polymer is a C _4-9 polymer and has a weight average molecular weight of 300 to 20,000 g/mol, and 0.1 to 100 phr (parts per hundred rubber), preferably 1 to 100 phr (parts per hundred rubber) based on the rubber content. It is preferable to input at 50 phr.

When the polymer is included in less than 1 phr with respect to the rubber content, the physical properties of the final rubber product are not significantly improved, and when the polymer is included in more than 50 phr, the original physical properties of rubber may not appear.

According to an embodiment of the present invention, the polymer is preferably a C4, C5, or C9-based polymer, more preferably a C4-based polybutene (PIB).

In the case of using synthetic rubber, since an organic solvent is used, as in the previous method, after removing residual monomer, polybutene (PIB) is directly put into a storage tank or blend tank, mixed, and then goes through a commercialization process to obtain a rubber in which the polymer is dispersed in a liquid phase. can be obtained

According to an embodiment of the present invention, the monomer is preferably at least one selected from the group consisting of styrene, butadiene, isobutylene, isoprene, ethylene and propylene.

In one embodiment of the present invention, the rubber is emulsion styrene-butadiene rubber (ESBR), solution styrene-butadiene rubber (SSBR), styrene-butadiene-styrene rubber (SBS), styrene-ethylene-butadiene-styrene rubber (SEBS), It is preferably a polyolefin elastomer (POE) such as butadiene rubber (BR), butyl rubber (IR), isoprene-isobutylene rubber (IIR) or ethylene propylene rubber (EPM), ethylene propylene diene rubber (EPDM).

According to an embodiment of the present invention, the rubber composition is preferably used as a rubber composition for a tire tread, a rubber composition for a sealant, and a rubber composition for a hot-melt adhesive.

Particularly preferably, when the rubber is isoprene-isobutylene rubber (IIR), it can be used as a butyl rubber for a sealant.

In addition, particularly preferably, when the rubber is a styrene-butadiene-styrene block copolymer (SBS) and a styrene-ethylene-butadiene-styrene resin (SEBS), it can be used for manufacturing a hot-melt adhesive.

In order to achieve another object of the present invention, the present invention provides a rubber composition for a tire tread comprising the rubber composition prepared according to the present invention.

The rubber composition for a tire tread according to an embodiment of the present invention includes, in addition to the raw material rubber and highly reactive polybutene (PIB), silica and/or carbon black as reinforcing fillers, process oil as a softener, sulfur as a vulcanizing agent, CBS as a vulcanization accelerator, and 1,3-diphenylguanidine (DPG), zinc oxide as a vulcanizing activator, stearic acid, a coupling agent for improving dispersibility, and an anti-aging agent may include a rubber compounding agent generally used in a rubber composition for a tire tread.

The type of silica that can be used as a reinforcing filler in the present invention is not particularly limited, but preferably has a surface area of 175 ± 5 m 2 /g, a moisture content of 6.0 ± 0.5 wt%, and a silicon dioxide (SiO2) content of 90 wt% or more. Do.

The carbon black used in the present invention is not particularly limited in its type, but has a BET (Brunauer, Emmett, Teller) specific surface area of 80 to 90 m 2 /g, and a DBP (Di-n-bibutyl) Phthalate) adsorption value is 100-110 g/100g, and iodine adsorption value is preferably in the range of 90-120 mg/g. The carbon black is preferably used in an amount of 40 to 100 parts by weight based on 100 parts by weight of the raw rubber. If the amount is less than 40 parts by weight, it is not preferable because a sufficient reinforcing effect is not exhibited. It is not preferable because it does not show

The process oil acts as a softener, and the aromatic content in the oil is 5 to 25 wt%, the naphthalene content is 25 to 45 wt%, and the paraffinic content is preferably 35 to 65 wt%. Other various additives used in the present invention are general components used in the rubber composition for tire tread, and details thereof will be omitted.

As described above, the rubber composition for a tire tread according to the present invention improves grip performance on the tread of an automobile tire, particularly a tire for a high-speed race car, while continuously maintaining the same without affecting the basic physical properties of the tire. make it possible

Another object of the present invention is to provide a tire manufactured by using the rubber composition for a tire tread according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to specific examples and comparative examples. However, this is merely to explain the present invention more easily, and should not be construed as limiting the scope of the present invention.

Preparation Example 1: Preparation of butadiene rubber (BR) in which polybutene (PIB) is dispersed in a liquid phase (extension)

In a 10L autoclave reactor substituted with nitrogen, 1500 g of 1,3-butadiene from which moisture was removed, and 5250 g of hexane were put, and then the temperature of the reactor was raised to ^{95 o C while turning the reactor with a stirrer.} After the temperature was ^{stabilized to 95 o} C, a catalyst in a combination of triisobutylaluminum/nickeloxanoate/hydrofluoric acid was added, and polymerization of polybutadiene rubber (BR) was carried out for 2 hours while controlling the temperature not to rise rapidly. Afterwards, 2.5 g of an alkyl phosphate-based compound and 5 g of a phenol-based antioxidant were added as a reaction terminator to terminate the reaction. The polymerized product ^{was cooled to 50 o} C and depressurized to prepare a butadiene rubber/hexane solution from which residual 1,3-butadiene was removed. The prepared butadiene rubber/hexane solution is measured and transferred to a 5L blend tank equipped with a stirrer after measuring total solid content (TSC). After adding polybutene (PIB) according to Table 1 at 37.5 phr of solid content to this butadiene rubber/hexane solution, the solution is stirred until the PIB is completely dissolved. The prepared butadiene rubber/polybutene/hexane mixture is removed using a steam stripper to remove hexane as a solvent to obtain a butadiene rubber solid in which polybutene is evenly dispersed, and the moisture of the solid is dried using a processing roll at ^{100 o C.} A sample of butadiene rubber with 37.5 phr of PIB extension was prepared.

Comparative Preparation Example 1: Preparation of polybutadiene (BR)

Polybutadiene rubber (BR) was polymerized in the same manner as in Preparation Example 1, and residual 1,3-butadiene and solvent were removed to obtain polybutadiene rubber (BR).

Comparative Examples 1 and 2

In Comparative Example 1, only the polybutadiene rubber prepared in Comparative Preparation Example 1 was used, and in Comparative Example 2, the polybutadiene prepared in Comparative Preparation Example 1 and HRPIB470 manufactured by Hanwha Total Co., Ltd. were mixed.

Examples 1 to 5

Examples 1 to 5 each prepared polybutadiene rubber (BR) according to Preparation Example 1, and after removing the monomer, different polybutenes (PIB) according to Table 1 were added, and polybutene (PIB) according to Table 1 ) was prepared in a liquid dispersion (extension) butadiene rubber (BR).

Information on the raw material used

	comparative example		Example
	One	2	One	2	3	4	5
Polybutene (PIB)	unused	HRPIB470	CPIB230	HRPIB190	CPIB650	HRPIB470	HRPIB470
Rubber	BR	BR	BR	BR	BR	BR	BR

- PIB: Hanwha Total Co., Ltd. CPIB230, CPIB650, HRPIB190, HRPIB470 1) CPIB230: conventional PIB (Mn 950g/mol), PB950 (Daelim Industrial Co., Ltd.)

2) CPIB650: conventional PIB (Mn 1,300g/mol), PB1300 (Daelim Industrial Co., Ltd.)

3) HRPIB190: high reactive PIB (Mn 1,000g/mol), HRPB1000 (Daelim Industrial Co., Ltd.)

4) HRPIB470: high reactive PIB (Mn 1,300g/mol), HRPB1300 (Daelim Industrial Co., Ltd.)

- Hx: Hanwha Total Co., Ltd. n-Hexane

- CHx: Duksan Chemical Co., Ltd. Cyclohexane

<Examples 1 to 6>

With the composition shown in Table 2, a composite material before crosslinking was prepared using MIX-LABO (Mixing capacity: 0.5liter, Main motor: 15HP) manufactured by Moriyama.

In Examples 1 to 5 in Table 2, BR in which PIB is dispersed was a rubber in which polybutene (PIB) prepared in Preparation Example 1 was dispersed in a liquid (PIB extended rubber), and Comparative Example 1 was used in Comparative Preparation Example 1. Only the prepared polybutadiene rubber was used, and Comparative Example 2 was a mixture of the polybutadiene rubber prepared in Comparative Preparation Example 1 and polybutene (PIB, HRPIB470).

The compounding was carried out in two steps. For the first kneading, fill 75% based on the volume of the 0.5 liter compounder and set the rotor speed to 70 rpm. Rubber composition, filler (silica), oil, zinc oxide (ZnO), stearic acid, silane coupling agent (Si-) 69) to control the temperature to obtain a primary rubber composition at 140~150℃.

For the second kneading, the mixture is cooled to room temperature and sulfur, DPG (Diphenyl Guanidine), CBS (N-cyclohexyl-2-benzothiazole sulfonamide), and antioxidant (6-PPD) are added at 90° C. or less at 50 rpm. and kneaded for 2 minutes.

For crosslinking of the blended rubber composite, each rubber composite was heated at 160℃ for the time obtained by measuring the vulcanization characteristics at 160℃, 40 minutes, and 1% strain with a Rubber Process Analyzer (RPA), plus 2 minutes to the time of T90. A rubber composite specimen for tire tread was prepared by crosslinking in a high-temperature press.

As other additives, with respect to 100 parts by weight of the rubber composition comprising SBR, BR and PIB, zinc oxide (ZnO) 3 parts by weight, stearic acid (St-A) 2 parts by weight, silica (ULTRASIL 7000Gr) 70 parts by weight, silica A primary compound (SMB, silica master batch) is prepared by adding 5.6 parts by weight of a coupling agent (SI-69) and 10 parts by weight of TDAE (treated distillate aromatic extracted) oil,

Compared to the first formulation, 1.5 parts by weight of sulfur, 1.8 parts by weight of diphenylguanidine (DPG) as a vulcanization accelerator, 1.8 parts by weight of cyclohexylbenzocyazolesulfenamide (CBS), and 0.2 parts by weight of antioxidant (6PPD) are further added to the secondary formulation (FMB, final master batch) was prepared. However, in Example 5, there is a difference only in that the content of sulfur is 1.8 parts by weight.

<Comparative Example 1>

A rubber composite specimen was prepared in the same manner as in Example 1, except that BR not containing polybutene (PIB) was used.

<Comparative Example 2>

With the composition shown in Table 1, a rubber composite specimen was prepared in the same manner as in Example 4, except that the polybutene (PIB) of HRPIB470 was added directly to a blender and blended with rubber without a separate liquid dispersion step.

(Unit: % by weight)

	comparative example		Example
	One	2	One	2	3	4	5
SBR(KKPC 5260H)	80	80	80	80	80	80	80
BR of Comparative Preparation Example 1	20	14.5
Direct injection of highly reactive polybutene (HRPIB) 470 compounding machine		5.5
Preparation Example 1 (BR containing 37.5 phr of each PIB)			20	20	20	20	20

Experimental example:

The physical properties of each rubber composite specimen prepared according to the Comparative Examples and Examples were measured as follows according to ASTM related regulations, and the results are shown in Table 3 below.

(1) Mooney viscosity (MV): Mooney viscosity was measured using a Mooney viscometer (MV2000, Alpha Technologies) by using a Mooney viscometer (MV2000, Alpha Technologies) to preheat a large rotor at 100°C for 1 minute and read the value 4 minutes after starting the rotor. .

(2) Hardness: The hardness test was performed based on JIS K6253 (2001), and the spring hardness HA (Shore-A hardness) was measured.

(3) Modulus : Modulus measurement was performed with a tensile tester manufactured by Instron after cutting a specimen into a dumbbell shape. The 100% and 200% modulus refer to the stress applied to the specimen when the specimen is elongated by 100% and 200%, respectively.

(4) Tensile strength : For the tensile strength, a No. 3 dumbbell test piece described in JIS K6251 (2001) was prepared by punching a vulcanized rubber sheet. Using this test piece, according to the method specified in JIS K6251, a tensile test was conducted under the conditions of a measurement temperature of 25°C and a tensile rate of 500 mm/min, and 100% modulus (M100), 200% modulus (M200), 300% modulus ( M300) Tensile break stress TB and tensile break elongation EB were measured.

(5) Elongation: When measuring the tensile strength, it was measured as the strain (%) up to the breaking point.

(6) Viscoelasticity: Viscoelasticity is measured using dynamic mechanical analysis (DMA), and 0℃ Tanδ is used as a substitute for the braking performance of the tire on a wet road surface, and the higher the value, the better the performance. 60℃ Tanδ is used as a substitute for the tire rolling resistance value, and the lower the value, the better the rolling resistance is, indicating that fuel efficiency increases.

(7) Abrasion: Abrasion is measured according to ASTM D5963 method while applying a 5N load using a DIN abrasion tester, and expressed as a relative index, the larger the value, the better the wear performance.

Properties		comparative example		Example
		One	2	One	2	3	4	5
machinability	Mixed viscosity (MV)	110	105	100	100	100	100	100
Crosslinking properties	Crosslinking density (dNm)	27	25	25	25	25	25	27
tensile properties	Hardness (SHORE-A)	67	68	68	69	69	69	69
	100% modulus (kgf/cm2)	64	60	58	62	57	56	59
	200% modulus (kgf/cm2)	142	132	136	146	133	131	147
	Tensile strength (kgf/cm2)	215	187	200	209	195	199	188
	Elongation (%)	274	258	267	263	268	273	240
viscoelastic	0℃Tanδ	0.2257	0.2325	0.2705	0.2673	0.2561	0.2809	0.3160
	60℃Tanδ	0.0762	0.0792	0.0809	0.0781	0.0823	0.0765	0.0676
Wear	Indices	100	96	103	101	101	110	111

As shown in Table 3, the specimen prepared by dispersing PIB in a solution phase in rubber has improved durability, grip properties, and low rotational resistance compared to that containing no PIB or adding the same amount of PIB directly to the compounding machine. Braking characteristics, low fuel consumption characteristics and wear performance were improved.

Claims (8)

1. A method for preparing a polymer dispersed rubber composition in which a polymer is dispersed in a solution phase in rubber (polymer extended rubber),

   Polymerizing a rubber composition comprising a monomer, a solvent and a catalyst in the rubber manufacturing process step;

   recovering residual monomer; and

   A method for producing a rubber composition comprising: adding a polymer to the rubber solution remaining after recovering the residual monomer.
2. According to claim 1,

   The polymer is C4 As a polymer, the weight average molecular weight is 300 ~ 20,000 g / mol,

   A method for producing a rubber composition, characterized in that it is added in an amount of 1 to 50 phr (parts per hundred rubber) with respect to the rubber content.
3. According to claim 1,

   The polymer is a method for producing a rubber composition, characterized in that the C4 polymer polybutene (PIB).
4. According to claim 1,

   The method for producing a rubber composition, characterized in that the monomer is at least one selected from the group consisting of styrene, butadiene, isobutylene, isoprene, ethylene and propylene.
5. According to claim 1,

   The rubber is emulsion styrene-butadiene rubber (ESBR), solution styrene-butadiene rubber (SSBR), styrene-butadiene-styrene rubber (SBS), styrene-ethylene-butadiene-styrene rubber (SEBS), butadiene rubber (BR), butyl rubber ( IR), isoprene-isobutylene rubber (IIR) or ethylene propylene rubber (EPM), ethylene propylene diene rubber (EPDM), such as a polyolefin elastomer (POE), characterized in that the manufacturing method of the rubber composition.
6. 6. The method according to any one of claims 1 to 5,

   The rubber composition is a rubber composition for a tire tread, a rubber composition for a sealant, a rubber composition for a hot-melt adhesive, a rubber composition for a shoe sole, a rubber composition for a belt, a rubber composition for a hose, or a sheet. A method for producing a rubber composition, characterized in that it is used as a rubber composition for use.
7. [Claim 6] A rubber composition for a tire tread comprising the rubber composition prepared according to any one of claims 1 to 5.
8. A tire, characterized in that it is manufactured using the rubber composition for a tire tread according to claim 7.