시스-1,4 결합 함유량이 97% 이상이고, 100℃에서의 무니(Mooney) 점도(ML1+4)가 45 이상이고, 무니 점도에 대한 25℃에서의 5질량% 톨루엔 용액 점도(T-cp)〔cps〕의 비인 (T-cp)/(ML1+4)가 2.0 이상인 부타디엔 고무 30 ~ 70질량%와, 다른 디엔계 고무 30 ~ 70질량%로 이루어지는 고무 성분 100질량부에 대하여, 질소 흡착 비표면적이 35m/g 이상 50m/g 미만의 카본 블랙 (1)을 55 ~ 75질량부, 질소 흡착 비표면적이 50m/g 이상 95m/g 이하의 카본 블랙 (2)를 5 ~ 20질량부 배합하고, 카본 블랙 (1) 및 (2)의 합계가 60 ~ 95질량부인 조성물.
A composition formed by compounding from 55 to 75 parts by mass of a carbon black (1) having a nitrogen adsorption surface area of at least 35 m2/g and less than 50 m2/g and from 5 to 20 parts by mass of a carbon black (2) having a nitrogen adsorption surface area of at least 50 m2/g and at most 95 m2/g with 100 parts by mass of a rubber component including from 30 to 70 mass % of butadiene rubber having a cis-1,4 bond content of at least 97% and a Mooney viscosity (ML1+4) of at least 45 at 100° C., a ratio (T-cp)/(ML1+4) of the viscosity of a 5 mass % toluene solution at 25° C. (T-cp) [cps] to the Mooney viscosity being at least 2.0, and from 30 to 70 mass % of other diene rubbers; the total of the carbon blacks (1) and (2) being from 60 to 95 parts by mass.
RUBBER COMPOSITION FOR TIRE RIM CUSHION OR RUBBER FINISHING AND PNEUMATIC TIRE USING SAME
타이어 림 쿠션 또는 검 피니싱용 고무 조성물 및 그것을 이용한 공기입 타이어
2016-02-18
Patent
Electronic Resource
Korean
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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