KR19990041200A - Rubber composition for white sidewalls and black cover strips on tires - Google Patents
Rubber composition for white sidewalls and black cover strips on tires Download PDFInfo
- Publication number
- KR19990041200A KR19990041200A KR1019970061757A KR19970061757A KR19990041200A KR 19990041200 A KR19990041200 A KR 19990041200A KR 1019970061757 A KR1019970061757 A KR 1019970061757A KR 19970061757 A KR19970061757 A KR 19970061757A KR 19990041200 A KR19990041200 A KR 19990041200A
- Authority
- KR
- South Korea
- Prior art keywords
- rubber
- weight
- parts
- ethylene propylene
- propylene diene
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0025—Compositions of the sidewalls
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/32—Properties characterising the ingredient of the composition containing low molecular weight liquid component
- C08L2207/324—Liquid component is low molecular weight polymer
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
본 발명은 타이어의 백색 사이드월 및 흑색 커버스트립용 고무조성물에 관한 것이다.The present invention relates to a rubber composition for a white sidewall and a black cover strip of a tire.
본 발명은 디엔고무 30 내지 70 중량부, 통상의 고분자 에틸렌 프로필렌 디엔 삼원공중합체 고무 15 내지 35 중량부 및 할로겐화 부틸고무 15 내지 35 중량부로 이루어진 전체 고무 성분 100 중량부에 대해, 저분자 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무 2 내지 20 중량부 및 통상의 첨가제로 이루어진 타이어의 백색 사이드월 및 흑색 커버스트립용 고무조성물을 제공하는 것이다.The present invention relates to a low molecular weight liquid ethylene propylene diene based on 100 parts by weight of a total rubber component consisting of 30 to 70 parts by weight of diene rubber, 15 to 35 parts by weight of conventional polymer ethylene propylene diene terpolymer rubber and 15 to 35 parts by weight of halogenated butyl rubber. To provide a rubber composition for a white sidewall and a black cover strip of a tire consisting of 2 to 20 parts by weight of terpolymer rubber and conventional additives.
이와같은 고무 조성물은 백색 사이드월 및 흑색 커버스트립의 변색이나 외관악화 없이 내후성, 내오존성, 내산화균열성은 물론 내피로성, 인장강도, 인열강도를 유지시킨다.Such a rubber composition maintains weather resistance, ozone resistance, oxidation crack resistance as well as fatigue resistance, tensile strength, and tear strength without discoloration or deterioration of white sidewalls and black cover strips.
Description
본 발명은 타이어의 백색 사이드월 및 흑색 커버스트립용 고무조성물에 관한 것이다. 더욱 상세하게는 저분자의 액상 에틸렌 프로필렌 디엔 고무를 사용하여 아민계 노화방지제나 왁스를 사용하지 않고도 외관악화 없이 내후성, 내오존성, 내산화균열성은 물론 내피로성, 인장강도, 인열강도를 유지시킨 타이어의 백색 사이드월 및 흑색 커버스트립용 고무조성물에 관한 것이다.The present invention relates to a rubber composition for a white sidewall and a black cover strip of a tire. More specifically, the low molecular liquid ethylene propylene diene rubber is used to maintain fatigue resistance, tensile strength and tear strength as well as weather resistance, ozone resistance and oxidation crack resistance without deterioration without the use of amine antioxidants or waxes. A rubber composition for white sidewalls and black cover strips.
일반적으로, 타이어의 사이드월부는 내후성, 내오존성, 내산화균열성이 요구되는 부분이므로, 디엔계 고무에 아민계 노화방지제나 왁스를 다량으로 배합한 고무조성물을 사용하고 있다.Generally, since the sidewall part of a tire is a part which requires weather resistance, ozone resistance, and oxidation cracking resistance, the rubber composition which mix | blended a large amount of an amine antioxidant and wax with diene rubber is used.
그러나, 상기 노화 방지제는 시간이 경과함에 따라 고무 표면에 석출되거나 고무를 변색시키는 단점이 있다. 특히, 사이드 월부의 백색 사이드월 및 백색 사이드월을 덮고 있는 흑색 커버스트립 고무의 경우, 아민계 노화방지제에 의한 변색이 두드러지게 눈에 띠게 된다.However, the anti-aging agent has a disadvantage in that it precipitates or discolors the rubber surface over time. In particular, in the case of the black cover strip rubber covering the white sidewalls and the white sidewalls of the sidewalls, discoloration by the amine antioxidant is noticeable.
따라서, 이러한 외관악화를 방지하기 위해 고무에 노화 방지제를 극소량 사용하거나 또는 전혀 배합하지 않고 대신 왁스를 다량으로 배합한다. 이와 같이 다량의 왁스를 사용한 고무 조성물은 내후성, 내오존성, 내산화균열성을 유지하면서 아민계 노화방지제에 의한 외관악화를 어느 정도 방지할 수 있다. 하지만, 왁스가 흑색 커버스트립 표면에 석출되면서 백색으로 변하는 또 다른 외관악화가 발생한다.Therefore, in order to prevent such deterioration of the appearance of the rubber, a very small amount of an anti-aging agent is used or no formulation is carried out, but instead a large amount of wax is blended. Thus, the rubber composition using a large amount of wax can prevent the deterioration of appearance by the amine antioxidant to some extent while maintaining weather resistance, ozone resistance, and oxidation cracking resistance. However, as the wax precipitates on the black cover strip surface, another deterioration occurs that turns white.
이러한 문제점은 아민계 노화방지제는 물론 왁스도 전혀 배합하지 않는 경우에만 해결할 수 있다. 그러나 아민계 노화방지제나 왁스를 전혀 사용하지 않는 경우에는 사이드월부 고무의 주요 요구물성인 내후성, 내오존성, 내산화균열성이 크게 떨어지는 문제점이 발생한다.This problem can be solved only when no amine anti-aging agent or wax is blended at all. However, when no amine anti-aging agent or wax is used at all, there is a problem in that weather resistance, ozone resistance, and oxidation cracking resistance, which are main requirements of the sidewall rubber, are greatly decreased.
상기 요구 물성을 유지하기 위해서, 백색 사이드월부 및 흑색 커버스트립에 에틸렌 프로필렌 디엔 삼원 공중합체 고무, 할로겐화 부틸고무 및 디엔계 고무로 이루어진 고무 조성물을 사용하되, 디엔계 고무의 사용비율을 줄이고 에틸렌 프로필렌 디엔 삼원공중합체 고무나 할로겐화 부틸고무의 사용량을 크게 증가시켜야 한다. 하지만 이런 경우 내피로성, 인장강도, 인열강도등 내구성이 현저히 약화되는 단점이 있다.In order to maintain the required physical properties, a rubber composition composed of ethylene propylene diene terpolymer copolymer rubber, halogenated butyl rubber and diene rubber is used for the white sidewall portion and the black cover strip, and the ratio of diene rubber is reduced and ethylene propylene diene is used. The amount of terpolymer rubber or halogenated butyl rubber should be greatly increased. However, in this case, the durability, such as fatigue resistance, tensile strength, tear strength is significantly weakened.
본 발명은 상기와 같은 문제점을 해결하고자 변색이나 외관 악화 없이 내후성, 내오존성, 내산화균열성은 물론 내피로성, 인장강도, 인열강도를 유지하는 백색 사이드월 및 흑색 커버스트립용 고무 조성물을 제공하는 것을 목적으로 한다.The present invention provides a rubber composition for white sidewalls and black cover strips to maintain weather resistance, ozone resistance, oxidation cracking resistance as well as fatigue resistance, tensile strength, tear strength without discoloration or appearance deterioration to solve the above problems For the purpose of
본 발명은 디엔고무 30 내지 70 중량부, 통상의 고분자 에틸렌 프로필렌 디엔 삼원공중합체 고무 15 내지 35 중량부 및 할로겐화 부틸고무 15 내지 35 중량부로 이루어진 전체 고무 성분 100 중량부에 대해, 저분자 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무 2 내지 20 중량부 및 통상의 첨가제로 이루어진 타이어의 백색 사이드월 및 흑색 커버스트립용 고무조성물이다.The present invention relates to a low molecular weight liquid ethylene propylene diene based on 100 parts by weight of a total rubber component consisting of 30 to 70 parts by weight of diene rubber, 15 to 35 parts by weight of conventional polymer ethylene propylene diene terpolymer rubber and 15 to 35 parts by weight of halogenated butyl rubber. A rubber composition for a white sidewall and a black cover strip of a tire composed of 2 to 20 parts by weight of terpolymer rubber and conventional additives.
이하, 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail.
일반적으로, 오존 균열은 천연고무에서 발생하여 그 균열의 끝이 천연고무 상에서 입자 또는 영역으로 분산되어 존재하는 에틸렌 프로필렌 디엔 삼원 공중합체 고무 영역과 만날 때까지 성장을 지속하게 된다.In general, ozone cracks occur in natural rubber and continue to grow until the ends of the cracks meet ethylene propylene diene terpolymer rubber regions that are dispersed and present as particles or regions on the natural rubber.
또한, 상기 영역에는 오존 균열의 성장이 에틸렌 프로펠렌 디엔 삼원 공중합체 고무 영역에 접하여 멈추게 되는 임계 균열 길이가 존재한다.There is also a critical crack length in this region where the growth of ozone cracks stops in contact with the ethylene propylene diene terpolymer rubber region.
이러한 임계 균열 길이 미만의 오존 균열은 에틸렌 프로필렌 디엔 삼원 공중합체 고무 영역에 접하여 성장을 멈추게 되나, 임계 길이 이상으로 성장한 오존 균열은 에틸렌 프로필렌 디엔 삼원 공중합체 고무 영역에 접하면 에틸렌 프로필렌 디엔 고무 입자를 우회하여 계속 성장하게 된다.Ozone cracks below this critical crack length will stop growth in contact with the ethylene propylene diene terpolymer rubber region, while ozone cracks grown beyond the critical length will bypass ethylene propylene diene rubber particles when they are in contact with the ethylene propylene diene terpolymer rubber region. You will continue to grow.
따라서, 에틸렌 프로필렌 디엔 고무의 농도가 낮더라도 천연 고무 매트릭스 상에 잘 분산되어 있으면 오존 균열이 임계 길이 이상으로 성장하기 전에 에틸렌 프로필렌 디엔 고무의 입자 또는 영역과 접하여서 오존 균열의 성장이 임계 균열 길이 또는 임계 길이 이하에서 중지되게 할 수 있다.Therefore, even if the concentration of ethylene propylene diene rubber is well dispersed on the natural rubber matrix, the growth of the ozone crack is in contact with the grain or area of ethylene propylene diene rubber before the ozone crack grows above the critical length, so Can be stopped below a threshold length.
본 발명에서 상기와 같은 원리로 저분자 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무를 사용하여 고분자 에틸렌 프로필렌 디엔고무와 다른 불포화 고무(특히, 할로겐화 부틸고무) 및 가교제나 촉진제 같은 첨가제의 분산성을 향상시키고, 저분자 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무를 추가로 사용함에 따른 불포화 고무의 증량효과에 의해 아민계 노화방지제나 왁스를 배합하지 않고도 내오존성, 내후성, 내산화균열성은 물론 내피로성, 인장강도, 인열강도를 유지시킨다.In the present invention, by using the low molecular liquid ethylene propylene diene terpolymer rubber as described above, the dispersibility of high molecular weight ethylene propylene diene rubber and other unsaturated rubbers (particularly, halogenated butyl rubber) and additives such as a crosslinking agent or accelerator, By adding liquid ethylene propylene diene terpolymer rubber, the effect of increasing the unsaturated rubber is the ozone resistance, weather resistance, oxidation cracking resistance as well as fatigue resistance, tensile strength and tear strength without the addition of amine antioxidant or wax. Keep it.
또한, 저분자 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무는 반응성 상용화제의 역할을 하여 고무 조성물의 가공 점도를 낮추며 고무 고분자는 물론 배합제의 상용성을 향상시켜 공가류에도 크게 기여한다.In addition, the low molecular weight liquid ethylene propylene diene terpolymer rubber acts as a reactive compatibilizer to lower the processing viscosity of the rubber composition and improve the compatibility of the rubber polymer as well as the compounding agent contributes greatly to the voids.
본 발명에서 저분자 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무는 분자량이 3,000 내지 9,000, 에틸렌과 프로필렌의 몰비가 30/70 내지 70/30 이고 디엔 삼원공단량체는 디사이클로펜타디엔 또는 에틸디엔 노르보르넨을 사용하며, 불포화 비율이 3 내지 15 % 인 에틸렌 프로필렌 디엔 삼원공중합체 고무이다.In the present invention, the low molecular liquid ethylene propylene diene terpolymer rubber has a molecular weight of 3,000 to 9,000, a molar ratio of ethylene and propylene of 30/70 to 70/30, and the diene terpolymer is dicyclopentadiene or ethyldiene norbornene. And ethylene propylene diene terpolymer rubber having an unsaturated ratio of 3 to 15%.
또한, 이들 저분자 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무는 2 내지 20 중량부를 사용하는 것이 바람직하며, 2 중량부 미만을 사용하는 경우 상용화제로서의 역할을 충분히 발휘하지 못하는 문제점이 발생하고, 20 중량부를 초과하여 사용하는 경우 저분자 물질의 과다사용에 따른 물성이 크게 저하되는 문제점이 발생한다.In addition, these low molecular weight liquid ethylene propylene diene terpolymer rubber is preferably used 2 to 20 parts by weight, when using less than 2 parts by weight does not exhibit a sufficient role as a compatibilizer, and exceeds 20 parts by weight In the case of using, the problem occurs that the physical properties due to excessive use of low molecular weight material is greatly reduced.
본 발명에서 통상의 첨가제로는 왁스 및 노화방지제를 제외한 카본블랙, 산화아연, 스테아린산, 유황, 유황공여체, 촉진제등이 선택된다.Typical additives in the present invention include carbon black, zinc oxide, stearic acid, sulfur, sulfur donors, accelerators and the like except for waxes and antioxidants.
이하, 본 발명을 실시예에 의해 설명하면 다음과 같다.Hereinafter, the present invention will be described with reference to Examples.
실시예 1 내지 4Examples 1-4
다음 표 1 에 기재된 조성으로 하여 통상적인 방법으로 가류전 고무시트 조성물을 배합하고, 이렇게 배합된 고무시트를 170 ℃ 에서 20 분 동안 가류하여 시험용 샘플을 제조하였다. 표 1 은 커버스트립용 고무조성물의 실시예이다.Next, the rubber sheet composition before vulcanization was blended in the usual manner using the composition shown in Table 1, and the rubber sheet thus blended was vulcanized at 170 ° C. for 20 minutes to prepare a test sample. Table 1 shows examples of rubber compositions for cover strips.
비교예 1Comparative Example 1
다음 표 1 에 기재된 조성으로 하여 고무시트 조성물을 배합하여 상기 실시예와 동일하게 실시하였다.Next, the rubber sheet composition was blended using the composition shown in Table 1, and the same procedure as in Example was performed.
EPDM : 에틸렌 프로필렌 디엔 삼원공중합체 고무EPDM: Ethylene Propylene Diene Terpolymer Rubber
Br-IIR : 할로겐화 부틸고무Br-IIR: Halogenated Butyl Rubber
촉진제 : NS, N-t-부틸-2-벤조디아질-설펜아미드Accelerator: NS, N-t-butyl-2-benzodiazyl-sulfenamide
유황공여체 : 알킬페놀 디설파이드Sulfur donor: Alkylphenol disulfide
시험예 1Test Example 1
상기 실시예 1 내지 4 및 비교예 1에서 얻은 시험용 샘플의 물성을 다음과 같이 측정하여 그 결과를 표 2 에 나타내었다.The physical properties of the test samples obtained in Examples 1 to 4 and Comparative Example 1 were measured as follows, and the results are shown in Table 2.
정변형피로Positive fatigue
변형율 125%, 빈도수 2 Hz 에서 실시한 결과를 나타내었다.The results were performed at a strain rate of 125% and a frequency of 2 Hz.
내오존성Ozone resistance
내오존성 평가중 정적은 50 PPHM 에서의 크랙 발생 시점을 표시한 것이며, 동적은 시편이 파탄되기 시작하는 시점을 표시한 것이다.During the ozone resistance evaluation, static is the time of crack initiation at 50 PPHM and dynamic is the time at which the specimen begins to break.
옥외내후성Outdoor weather resistance
2cm ×10cm 시편에 변형율 100 %, 변형속도 60 rpm 의 피로를 주면서 옥외에 방치하여 시험한 결과를 나타낸 것이다.The test results were shown in the outdoor while giving a 2 cm × 10 cm specimen a strain of 100% and a strain rate of 60 rpm.
상기 표 2에 나타난 바와 같이 본 발명에 의한 실시예 1 내지 4 와 비교예 1을 비교하여 보면, 저분자의 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무을 사용한 실시예 1 내지 4 의 경우 왁스를 사용하지 않아 변색이 없었고, 인장강도는 약간 우수하였으며, 인열강도, 정변형피로, 크랙성장속도, 내오존성 및 옥외내후성은 비교예 1 과 비슷한 수준으로 유지되었다.When comparing Examples 1 to 4 and Comparative Example 1 according to the present invention as shown in Table 2, in the case of Examples 1 to 4 using a low-molecular liquid ethylene propylene diene terpolymer rubber, discoloration does not occur without using wax Tensile strength was slightly superior, tear strength, static strain, crack growth rate, ozone resistance and outdoor weather resistance were maintained at the same level as in Comparative Example 1.
실시예 5 내지 8Examples 5-8
다음 표 3 에 기재된 조성으로 하여 통상적인 방법으로 가류전 고무시트 조성물을 배합하고, 이렇게 배합된 고무시트를 170 ℃ 에서 20 분 동안 가류하여 시험용 샘플을 제조하였다. 표 3 은 백색사이드월용 고무조성물의 실시예이다.Next, the rubber sheet composition before vulcanization was blended in the usual manner using the composition shown in Table 3, and the rubber sheet thus blended was vulcanized at 170 ° C. for 20 minutes to prepare a test sample. Table 3 shows examples of rubber compositions for white sidewalls.
비교예 2Comparative Example 2
다음 표 3 에 기재된 조성으로 하여 고무시트 조성물을 배합하여 상기 실시예와 동일하게 실시하였다.Next, the rubber sheet composition was blended using the composition shown in Table 3, and the same procedure as in Example was performed.
EPDM : 에틸렌 프로필렌 디엔 삼원공중합체 고무EPDM: Ethylene Propylene Diene Terpolymer Rubber
Cl-IIR : 할로겐화 부틸고무Cl-IIR: Halogenated Butyl Rubber
촉진제 : NS, N-t-부틸-2-벤조디아질-설펜아미드Accelerator: NS, N-t-butyl-2-benzodiazyl-sulfenamide
유황공여체 : 알킬페놀 디설파이드Sulfur donor: Alkylphenol disulfide
시험예 2Test Example 2
상기 실시예 5 내지 8 및 비교예 2에서 얻은 시험용 샘플의 물성을 시험예 1과 같은 방법으로 측정하여 그 결과를 표 4 에 나타내었다.The physical properties of the test samples obtained in Examples 5 to 8 and Comparative Example 2 were measured in the same manner as in Test Example 1, and the results are shown in Table 4.
상기 표 4를 보면 저분자의 액상 에틸렌 프로필렌 디엔 삼원공중합체 고무을 사용한 실시예 5 내지 8 의 고무조성물이 왁스를 사용하지 않고도 비교예 2 에 비해 인장강도, 인열강도, 정변형피로, 크랙성장속도, 내오존성 및 옥외내후성이 비슷한 수준으로 유지되거나 향상되었다.Table 4 shows the rubber composition of Examples 5 to 8 using low molecular liquid ethylene propylene diene terpolymer rubber without using wax, and compared with Comparative Example 2, tensile strength, tear strength, strain strain, crack growth rate, Ozone resistance and outdoor weather resistance were maintained or improved to a similar level.
상기한 바와 같은 방법에 의해 발명된 고무 조성물은 변색이나 외관악화 없이 내후성, 내오존성, 내산화균열성은 물론 내피로성, 인장강도, 인열강도를 유지한다.The rubber composition invented by the above method maintains weather resistance, ozone resistance, oxidation crack resistance as well as fatigue resistance, tensile strength and tear strength without discoloration or deterioration.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019970061757A KR100237254B1 (en) | 1997-11-21 | 1997-11-21 | A rubber composition for sidewall of tire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019970061757A KR100237254B1 (en) | 1997-11-21 | 1997-11-21 | A rubber composition for sidewall of tire |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990041200A true KR19990041200A (en) | 1999-06-15 |
KR100237254B1 KR100237254B1 (en) | 2000-01-15 |
Family
ID=19525246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019970061757A KR100237254B1 (en) | 1997-11-21 | 1997-11-21 | A rubber composition for sidewall of tire |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100237254B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040001728A (en) * | 2002-06-28 | 2004-01-07 | 금호타이어 주식회사 | Tire Sidewall Compound |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040046609A (en) * | 2002-11-28 | 2004-06-05 | 한국타이어 주식회사 | Rubber composition for coverstripe of tire white sidewall |
-
1997
- 1997-11-21 KR KR1019970061757A patent/KR100237254B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040001728A (en) * | 2002-06-28 | 2004-01-07 | 금호타이어 주식회사 | Tire Sidewall Compound |
Also Published As
Publication number | Publication date |
---|---|
KR100237254B1 (en) | 2000-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0232463B1 (en) | Epdm elastomeric compositions | |
EP0231731B1 (en) | Rubber blends | |
US5964969A (en) | Tire with white sidewall | |
EP2818513A1 (en) | Oil extended ethylene-alpha-olefin-non-conjugated diene copolymer | |
US5504164A (en) | Curing systems for compositions containing halogenated copolymers of isobutylene and para-methylstrene | |
KR100237254B1 (en) | A rubber composition for sidewall of tire | |
CN112375306A (en) | Rubber material for sealing rubber strip | |
KR20040074995A (en) | Preventing discoloration in an elastomer rubber | |
KR100351008B1 (en) | A rubber composition for tire sidewalls | |
KR100250641B1 (en) | A rubber composition containing the liquidified epdm | |
CA1336468C (en) | Ethylene-alpha-olefin copolymer rubber composition | |
KR0182155B1 (en) | A rubber composition for white sidewall of a tire | |
CN111269468A (en) | Color-changing-resistant and aging-resistant light-colored rubber composition for tires | |
KR100308879B1 (en) | Highly Hardness Rubber Composition Using Liquid Natural Rubber | |
KR100233228B1 (en) | A rubber composition for rim of tire | |
KR100211353B1 (en) | The rubber composition for tire inerliner | |
KR20000046695A (en) | Rubber composition for use in tire sidewall | |
US5276081A (en) | Rubber composition | |
KR100205482B1 (en) | Rubber composition of ozone and aging resistance | |
KR102227563B1 (en) | Rubber compound for tire sidewall | |
KR100234482B1 (en) | A rubber composition improved ozone resistance and adherence | |
KR100526256B1 (en) | Rubber composition for white sidewall of tire | |
KR20040064754A (en) | Rubber composition for tire sidewall | |
JP2891078B2 (en) | Rubber composition for heat-resistant anti-vibration rubber and vulcanized rubber | |
KR100393929B1 (en) | Tire tread rubber composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20080926 Year of fee payment: 12 |
|
FPAY | Annual fee payment |
Payment date: 20110930 Year of fee payment: 15 |
|
FPAY | Annual fee payment |
Payment date: 20140929 Year of fee payment: 18 |
|
LAPS | Lapse due to unpaid annual fee |