KR0182159B1 - Under tread rubber composition for big tire - Google Patents
Under tread rubber composition for big tire Download PDFInfo
- Publication number
- KR0182159B1 KR0182159B1 KR1019960005536A KR19960005536A KR0182159B1 KR 0182159 B1 KR0182159 B1 KR 0182159B1 KR 1019960005536 A KR1019960005536 A KR 1019960005536A KR 19960005536 A KR19960005536 A KR 19960005536A KR 0182159 B1 KR0182159 B1 KR 0182159B1
- Authority
- KR
- South Korea
- Prior art keywords
- rubber composition
- weight
- parts
- tire
- tread
- 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
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C08L61/12—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with polyhydric phenols
-
- 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
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/06—Tyres specially adapted for particular applications for heavy duty vehicles
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
본 발명은 디엔계 천연고무 100중량부에 대하여 카본블랙 30 내지 50중량부, 레조시놀 포름알데히드 수지 1 내지 4중량부, 기타 배합제를 첨가하여서 되는 것을 특징으로 하는 대형 타이어의 언더트레드용 고무 조성물에 관한 것이다.The present invention is based on 100 parts by weight of diene-based natural rubber, carbon black 30 to 50 parts by weight, resorcinol formaldehyde resin 1 to 4 parts by weight, and other compounding agent, characterized in that the rubber for the under-tread of large tires To a composition.
본 발명에 따르면, 벨트와 트레드 간의 층간 응력을 완화시킬 수 있도록 적정 수준의 경도를 유지할 수 있고 타이어의 마모말기에 일어날 수 있는 언더드레드 부위의 이상 마모현상을 방지하기 위하여 내인열 마모 성능을 유지하면서 고무 조성물의 내발열 성능이 향상된 대형 타이어의 언더트레드용 고무 조성물을 얻을 수 있다. 또한, 이 고무 조성물을 스틸 래디얼 대형 타이어의 언더 트레드로 사용하므로써 타이어의 내구성을 크게 향상시킬 수 있다.According to the present invention, it is possible to maintain an appropriate level of hardness so as to alleviate the interlayer stress between the belt and the tread, and to maintain the tear resistance performance in order to prevent abnormal wear phenomenon of the underdreaded portion which may occur at the end of tire wear. It is possible to obtain a rubber composition for under tread of a large tire with improved heat resistance performance of the rubber composition. In addition, by using this rubber composition as an under tread of a steel radial large tire, the durability of the tire can be greatly improved.
Description
본 발명은 대형 타이어의 언더트레드용 고무 조성물에 관한 것으로, 더욱 상세하게는 벨트와 트레드 간의 층간 응력을 완화시킬 수 있도록 적정 수준의 경도를 유지하고 타이어의 마모말기에 일어날 수 있는 언더트레드 부위의 이상 마모현상을 방지하기 위하여 내인열 마모성능을 유지하면서, 조성물의 내발열 성능을 높힘으로써 타이어의 내구성을 향상시킨 스틸 래디얼 대형 타이어의 언더트래드용 고무 조성물에 관한 것이다The present invention relates to a rubber composition for under tread of a large tire, and more particularly, to maintain an appropriate level of hardness to alleviate the interlaminar stress between the belt and the tread and abnormalities of the under tread that may occur at the end of the tire wear. The present invention relates to a rubber composition for under tread of steel radial oversized tires, in which tire durability is improved by increasing the heat resistance performance of the composition while maintaining tear resistance to prevent wear.
일반적으로, 대형 타이어의 언더트레드 고무는 장거리 고속주행시 트래드 및 언더트래드 부위의 발열로 야기되는 타이어의 폭발 및 분리현상을 방지하기 위한 조성물 자체의 저발열성과 마모말기의 이상 마모를 방지하기 위한 내인열 마모 성능이 요구된다.In general, under-tread rubber of a large tire has a low heat generation of the composition itself to prevent the explosion and separation of the tire caused by the heat generated in the tread and under tread area during long-distance high-speed driving and tear resistance to prevent abnormal wear at the end of wear Wear performance is required.
고무의 발열을 낮추는 방법으로는 충전제로 사용되는 카본블랙의 비표면적을 작게하는 방법이 알려져 있다. 그러나 이방법은 비표면적이 작은 카본블랙을 사용함으로써 고무 조성물의 내인열 마모 성능이 낮아지고, 마모말기에 칩컷(CHIP-CUT; 타이어의 트레드 부위가 절단되거나 찝혀져 떨어져 나가는 현상) 등과 같은 이상 마모현상이 일어나 타이어 수명 뿐만 아니라 재생성에도 심각한 악영향을 주게 된다. 또한, 경도가 낮아져 고속주행시 상대적으로 경도가 높은 트래드나 벨트 부위에 비해 언더트레드 부위에 응력이 집중되어, 오히려 내구성 (트레드부와 벨트간, 또는 벨트들간의 폭발 및 분리가 유발되는 것을 억제하는 성능)을 저하시키게 된다. 그러므로, 고무 조성물의 경도와 내인열 마모성능을 적정수준으로 유지하면서 내발열 성능을 높이는 것은 매우 어려운 일이다.As a method of reducing the heat generation of rubber, a method of reducing the specific surface area of carbon black used as a filler is known. However, this method uses carbon black with a small specific surface area, which lowers the tear resistance performance of the rubber composition, and at the end of the wear, abnormal wear such as chip cut (CUT cut) This will seriously affect tire life as well as rebuild. In addition, the hardness is lowered, so the stress is concentrated in the under-tread area than in the tread or belt area, which is relatively hard during high-speed driving, and thus durability (results in preventing explosion and separation between the tread part and the belt or the belts). ) Is lowered. Therefore, it is very difficult to increase the heat generating performance while maintaining the hardness and tear resistance of the rubber composition at an appropriate level.
본 발명의 목적은 비표면적이 작은 카본블랙을 사용하여 내발열 성능을 높힘과 동시에 보강성 수지를 사용하여 경도와 내인열 마모 성능을 보강함으로써 내구성이 향상된 대형 래디얼 타이어용 언더트레드 고무 조성물을 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide an undertread rubber composition for a large radial tire having improved durability by using carbon black having a small specific surface area to improve heat resistance and at the same time using a reinforcement resin to enhance hardness and tear resistance. have.
이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
본 발명은 디엔계 천연고무 100중량부, 카본블랙 30 내지 50중량부, 레조시놀 포름알데히드 수지 1 내지 4중량부, 기타 배합제를 첨가하여서 되는 것을 특징으로 하는 대형 타이어의 언더트레드용 고무 조성물인 것이다.The present invention is 100 parts by weight of the diene-based natural rubber, 30 to 50 parts by weight of carbon black, 1 to 4 parts by weight of resorcinol formaldehyde resin, and other compounding agent, rubber composition for under-tread of large tires It is
이하 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail.
본 발명에서 사용될 수 있는 디엔계 천연고무로는, 예를들면 국제표 준 견본에 의한 암갈색 내지 황색의 리브드 스모크 시이트(Ribbed Smoked Sheet)를 겹쳐 만든 고무 덩어리를 들 수 있다.The diene-based natural rubbers that can be used in the present invention include, for example, rubber lumps formed by overlapping dark brown to yellow ribbed smoked sheets by international standard samples.
본 발명에 따른 바람직한 카본블랙은 pH가 6 내지 10이고, I2흡착이 60 내지 100mg/g이며, DBP 흡착이 80 내지 120㎖/100g이고 착색도가 100이상이며 톨루엔 착색투과도가 80%이상인 것이다.Preferred carbon blacks according to the present invention have a pH of 6 to 10, an I 2 adsorption of 60 to 100 mg / g, a DBP adsorption of 80 to 120 ml / 100 g, a coloration of 100 or more, and a toluene color permeability of 80% or more.
본 발명에서는 보강성 수지로서 레조시놀 포름알데히드 수지(Resorcinol Formaldehyde Resin,이하 알에프 수지(RF-RESIN)라 한다.)를 사용할 수 있는데, 바람직하게는 비중이 1.19 ± 0.03이고 수분이 2.0%이하이며, 연화점이 80 내지 120℃의 범위인 알에프 수지를 사용한다.In the present invention, a resorcinol formaldehyde resin (hereinafter referred to as RF resin) may be used as the reinforcing resin. Preferably, the specific gravity is 1.19 ± 0.03 and the moisture is 2.0% or less. And RF resin whose softening point is the range of 80-120 degreeC is used.
본 발명에 따른 대형 타이어의 언더트레드용 고무 조성물에는 4중량부 이하의 알에프 수지가 사용되어야 하는데, 그이상 사용할 경우에는 내발열 성능의 저하로 인해 내구성이 불량해진다.In the rubber composition for under tread of a large tire according to the present invention, an RF resin of 4 parts by weight or less should be used, but when used more than this, durability becomes poor due to the deterioration of heat generation performance.
이밖에 또다른 기타 배합제들은 통상적인 배합량으로 첨가하였는 바, 즉 가류촉진제로서 n-tert-부틸-2-벤조디아질 설펜아미드 0.7 내지 2중량부, 가류제로서 황 분말 0.5 내지 1.5 중량부, 불용성 황 1내지 1.5중량부, 스테아린산 1 내지 2중량부 및 산화아연 2내지 4중량부 등이다.Other other compounding agents were added in conventional compounding amounts, that is, 0.7 to 2 parts by weight of n-tert-butyl-2-benzodiazyl sulfenamide as a vulcanization accelerator, 0.5 to 1.5 parts by weight of sulfur powder as a vulcanizing agent, 1 to 1.5 parts by weight of insoluble sulfur, 1 to 2 parts by weight of stearic acid, 2 to 4 parts by weight of zinc oxide, and the like.
또한 고무의 노화방지제로서는 n-1,3-디메틸부틸 n-페닐 파라핀 페닐렌디아민 1 내지 2중량부, 폴리-2,2,4-트리메틸-1,2-디하이드로 퀴놀린 0.1 내지 1중량부를 사용하였다.In addition, 1 to 2 parts by weight of n-1,3-dimethylbutyl n-phenyl paraffin phenylenediamine and 0.1 to 1 part by weight of poly-2,2,4-trimethyl-1,2-dihydroquinoline are used as rubber anti-aging agents. It was.
본 발명에 따르면, 벨트와 트레드 간의 층간 응력을 완화시킬 수 있도록 적정 수준의 경도를 유지할 수 있고 타이어의 마모말기에 일어날 수 있는 언더트레드 부위의 이상 마모현상을 방지하기 위하여 내인열 마모 성능을 유지하면서 고무 조성물의 내발열 성능이 향상된 대형 타이어의 언더트레드용 고무 조성물을 얻을 수 있다. 또한 이 고무 조성물을 스틸 래디얼 대형 타이어의 언더 트레드로 사용하므로써 타이어의 내구성을 크게 향상시킬 수 있다.According to the present invention, it is possible to maintain an appropriate level of hardness so as to alleviate the interlayer stress between the belt and the tread, and to maintain the tear resistance performance in order to prevent abnormal wear of the under-tread portion that may occur at the end of the tire wear. It is possible to obtain a rubber composition for under tread of a large tire with improved heat resistance performance of the rubber composition. In addition, by using this rubber composition as an under tread of a steel radial large tire, the durability of the tire can be greatly improved.
이하, 본 발명을 실시예에 의거하여 더욱 상세히 설명하면 다음과 같으며, 본 발명이 다음 실시예에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples. The present invention is not limited to the following Examples.
1) 경도 측정 시험1) Hardness Test
직경이 10mm 이상이고 두께가 6mm 이상인 가황고무 시험편 표면의 경도를 측정하는 액셀사(EXCEL Inc, 일본)의 에이형(A형) 자동경도기로 경도를 측정하였다.Hardness was measured with the A-type (A type) automatic hardness tester of EXCEL Inc. (Japan) which measures the hardness of the surface of a vulcanized rubber test piece whose diameter is 10 mm or more and thickness is 6 mm or more.
하기한 표에 나타낸 값은 비교예 2의 값을 기준(100)으로 한 경도 값으로, 그 값이 100정도의 수준을 유지하는 것이 좋다.The value shown in the following table is a hardness value based on the value of Comparative Example 2 as reference 100, and the value is preferably maintained at a level of about 100.
2) 내발열 성능 시험2) Heat resistance performance test
가황된 직경 1인치, 높이 1인치의 원통형 시편에 하중 25kg, 스트로크 4.45mm로 다이나믹 콤프레스 스트레인(DYNAMIC COMPRESSIVE SRRAIN)을 주어 고무의 발열을 측정하는 굿 리치 플랙소미터(GOODRICH FLEXOMETER)로 내발열 성능을 측정하였다.Heat-resistant performance with GOODRICH FLEXOMETER, which measures the heat of rubber by giving a dynamic compress strain with a vulcanized diameter of 1 inch and a height of 1 inch and a load of 25 kg and a stroke of 4.45 mm. Was measured.
하기한 표에 나타낸 값은 비교예 2의 값을 기준(100)으로 하여 나타낸 값으로, 숫자가 높을수록 내발열 성능이 우수함을 나타낸다.The value shown in the following table is a value represented by using the value of Comparative Example 2 as a reference 100, and the higher the number, the better the heat resistance performance.
3) 내인열 마모 성능 시험3) tear resistance performance test
원판형의 시험편을 760rpm으로 회전하는 구동축에 고정하고, 1Hz로 편심구동되는 47.5㎝ 빔(BEAM) 끝에 장착된 60°각도, 15 내지 20㎛의 날(EDGE), 폭 0.63㎝의 텅스텐 카바이드 나이프로 충격을 일정시간 가한 후 시험편의 중량 및 외경 손실을 측정하는 인열마모시험기(BF-GOODRICH CHIP-CUT WEAR TESTER)로 내인열 마모 성능을 측정하였다.A disk-shaped test piece was fixed to a drive shaft rotating at 760 rpm, and a tungsten carbide knife with a 60 ° angle, a blade of 15 to 20 µm (EDGE), and a width of 0.63 cm mounted on an end of a 47.5 cm beam (BEAM) eccentrically driven at 1 Hz. After the impact was applied for a certain time, tear wear resistance was measured by a tear-wear tester (BF-GOODRICH CHIP-CUT WEAR TESTER) that measures the weight and outer diameter loss of the test piece.
하기한 표에 나타낸 값은 비교예 2의 기준(100)으로 하여 나타낸 값으로, 숫자가 높을수록 내인열 마모 성능이 우수함을 나타낸다.The value shown in the following table is a value shown as the reference 100 of Comparative Example 2, and the higher the number, the better the tear resistance performance.
[실시예 1 내지 7][Examples 1 to 7]
디엔계 천연고무, 카본블랙*2, 알에프수지, 스테아린산, 산화아연, 노화방지제, 가류척진제, 황분말 및 불용성 황을 다음 표 1에 나타낸 바와 같은 중량부로 배합하고, 반바리 혼합기(BANBURY MIXER)와 오픈 밀(OPEN MILL)을 이용하여 고무 조성물을 제조하였다.Diene-based natural rubber, carbon black * 2 , RF resin, stearic acid, zinc oxide, antioxidant, vulcanizing agent, sulfur powder and insoluble sulfur are blended in parts by weight as shown in the following Table 1, BANBURY MIXER And the rubber composition was prepared using an open mill (OPEN MILL).
얻어진 고무 조성물에 대하여 상기한 방법으로 물성시험을 실시하고, 그 결과를 다음 표 1에 기재하였다.The obtained rubber composition was tested for physical properties by the above-described method, and the results are shown in Table 1 below.
[비교예 2 내지 3][Comparative Examples 2 to 3]
디엔계 천연고무, 카본블랙 , 스테아린산, 산화아연, 노화방지제, 가류촉진제, 황분말 및 불용성 황을 다음 표 2에 나타낸 바와 같은 중량부로 배합하고, 반바리 혼합기(BANBURY MIXER)와 오픈 밀(OPEN MILL)을 이용하여 실시예 1과 동일한 방법으로 고무 조성물을 제조하였다.Diene natural rubber, carbon black , Stearic acid, zinc oxide, antioxidant, vulcanization accelerator, sulfur powder and insoluble sulfur are blended in parts by weight as shown in the following Table 2, Example 1 using a BANBURY MIXER and OPEN MILL Rubber composition was prepared in the same manner as.
얻어진 고무 조성물에 대하여 상기한 방법으로 물성시험을 실시하고, 그 결과를 다음 표 2에 기재하였다.The obtained rubber composition was tested for physical properties by the above-described method, and the results are shown in Table 2 below.
[비교예 4 내지 6][Comparative Examples 4 to 6]
디엔계 천연고무, 카본블랙 , 스테아린산, 산화아연, 노화방지제, 가류촉진제, 황 분말 및 불용성 황을 다음 표 2에 나타낸 바와 같은 중량부로 배합하고, 반바리 혼합기와 오픈 밀을 이용하여 실시예 1과 동일한 방법으로 고무 조성물을 제조하였다.Diene natural rubber, carbon black , Stearic acid, zinc oxide, antioxidant, vulcanization accelerator, sulfur powder and insoluble sulfur are blended in parts by weight as shown in the following Table 2, and a rubber composition is prepared in the same manner as in Example 1 using a short-barrel mixer and an open mill. It was.
얻어진 고무 조성물에 대하여 상기한 방법으로 물성시험을 실시하고, 그 결과를 다음 표 2에 기재하였다.The obtained rubber composition was tested for physical properties by the above-described method, and the results are shown in Table 2 below.
[비교예 10 내지 13][Comparative Examples 10 to 13]
디엔계 천연고무, 카본블랙 , 스테아린산, 산화아연, 노화방지제, 가류촉진제, 황 분말 및 불용성 황을 다음 표 2에 나타낸 바와 같은 중량부로 배합한 고무 조성물에 알에프 수지를 1, 2, 3, 4중량부를 첨가하고, 실시예 1과 동일한 방법으로 고무 조성물을 제조하여, 각각의 고무 조성물을 비교예 10 내지 13으로 하였다.Diene natural rubber, carbon black 1, 2, 3, 4 parts by weight of RF resin was added to a rubber composition comprising stearic acid, zinc oxide, an antioxidant, a vulcanization accelerator, a sulfur powder, and an insoluble sulfur in parts by weight, as shown in Table 2 below. Rubber compositions were prepared in the same manner as described above, and each rubber composition was prepared as Comparative Examples 10 to 13.
얻어진 고무 조성물에 대하여 상기한 방법으로 물성시험을 실시하고, 그 결과를 다음 표 2에 기재하였다.The obtained rubber composition was tested for physical properties by the above-described method, and the results are shown in Table 2 below.
*1 : I흡착이 110 내지 140mg/g이고, DBF흡착이 100 내지 130㎖/100g이며, 톨루엔 착색 투과도가 80% 이상인 카본블랙.* 1: Carbon black with I adsorption of 110 to 140 mg / g, DBF adsorption of 100 to 130 ml / 100 g, and toluene coloring permeability of 80% or more.
*2 : I흡착이 60 내지 100mg/g이고, DBF흡착이 80 내지 120㎖/100g이며, 톨루엔 착색 투과도가 80% 이상인 카본블랙.* 2: Carbon black with I adsorption of 60 to 100 mg / g, DBF adsorption of 80 to 120 ml / 100 g, and toluene coloring permeability of 80% or more.
**1 : n-1,3-디메틸부틸n-페닐 파라핀 페닐렌 디아민.** 1: n-1,3-dimethylbutyl n-phenyl paraffin phenylene diamine.
** 2 : 폴리-2,2,4-트리메틸 1,2-디하이드로퀴놀린.** 2: poly-2,2,4-trimethyl 1,2-dihydroquinoline.
상기한 표 1과 2에서 알 수 있는 바와 같이, 본 발명에 따라 제조된 고무 조성물은 종래의 고무와 동등한 수준의 경도와 내인열 마모 성능을 유지하면서 내발열 성능에 있어서는 종래 고무에 비해 월등한 성능을 가진다.As can be seen in Tables 1 and 2 above, the rubber composition prepared according to the present invention has superior performance in comparison with conventional rubber in heat generation performance while maintaining the hardness and tear resistance performance equivalent to that of conventional rubber. Has
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960005536A KR0182159B1 (en) | 1996-03-04 | 1996-03-04 | Under tread rubber composition for big tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960005536A KR0182159B1 (en) | 1996-03-04 | 1996-03-04 | Under tread rubber composition for big tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970065616A KR970065616A (en) | 1997-10-13 |
| KR0182159B1 true KR0182159B1 (en) | 1999-05-15 |
Family
ID=19452343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960005536A KR0182159B1 (en) | 1996-03-04 | 1996-03-04 | Under tread rubber composition for big tire |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0182159B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100369615B1 (en) * | 2000-06-09 | 2003-01-29 | 금호산업 주식회사 | Undertread rubber composition for bias |
| KR100917446B1 (en) * | 2008-04-14 | 2009-09-14 | 금호타이어 주식회사 | Tire tread rubber composition |
-
1996
- 1996-03-04 KR KR1019960005536A patent/KR0182159B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100369615B1 (en) * | 2000-06-09 | 2003-01-29 | 금호산업 주식회사 | Undertread rubber composition for bias |
| KR100917446B1 (en) * | 2008-04-14 | 2009-09-14 | 금호타이어 주식회사 | Tire tread rubber composition |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970065616A (en) | 1997-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1897703A1 (en) | Tire with tread having a transition layer containing depolymerized rubber, pre-cured rubber or coal dust | |
| EP1780238B1 (en) | Rubber composition for breaker cushion and tire using the same | |
| US4396052A (en) | Radial tire | |
| US20080066840A1 (en) | Tire with tread having an outer cap layer and underlying transition layer containing corncob granules | |
| EP1439204A2 (en) | Rubber composition and pneumatic tire using the same | |
| DE60002374T2 (en) | Improve the life of a pneumatic radial tire by using certain cohesive compositions with low hysteresis | |
| US4309318A (en) | Tread compositions for tires having low rolling resistance | |
| EP0824567A1 (en) | Tire tread composition | |
| KR0168430B1 (en) | Rubber composition for all-weather tires | |
| JP2003012866A (en) | Rubber composition for base tread and pneumatic tire | |
| JP5335252B2 (en) | Steel cord bonding rubber composition and pneumatic tire | |
| JPH07258470A (en) | Rubber composition for steel belt | |
| KR0182159B1 (en) | Under tread rubber composition for big tire | |
| EP2823972A1 (en) | Rubber composition for tire, and pneumatic tire | |
| KR100691219B1 (en) | Sidewall insert and bead rubber composition for runflat tire | |
| KR0179711B1 (en) | Cap-tread rubber composition for tire of large size | |
| JP2591569B2 (en) | Tread rubber composition | |
| JP2000017116A (en) | Rubber composition for tire tread | |
| KR100219942B1 (en) | Rubber composition for adhesion of rubber/steel cord of radial tire of a car | |
| KR0174796B1 (en) | Tread rubber composition for large tires | |
| JPH0116261B2 (en) | ||
| KR102308320B1 (en) | Bead-Apex rubber composition and manufacturing method thereof | |
| JPH11279337A (en) | Rubber composition | |
| JPH07109383A (en) | Rubber composition for heavy-duty radial tire tread | |
| KR100583362B1 (en) | Rubber composition for tire hump strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| LAPS | Lapse due to unpaid annual fee |