A fluid for traction drives for automobiles which comprises (A) a hydrocarbon compound having two bridged rings selected from bicyclo[2.2.1]heptane ring, bicyclo[3.2.1]octane ring, bicyclo[3.3.0]octane ring and bicyclo[2.2.2]octane ring and (B) a hydrocarbon compound having at least one structure selected from quaternary carbon atom and ring structures and having a kinematic viscosity at 40° C. of 10 mm
2
/s or smaller, and has a viscosity at −40° C. of 40,000 Pa·s or smaller and a flash point of 140° C. or higher, is provided. This fluid exhibits a great traction coefficient at high temperatures and very small viscosity at low temperatures. A fluid for traction drives which comprises a specific bicyclo[2,2,1]heptane derivative having 14 to 17 carbon atoms and having a viscosity index of 0 or greater is also provided. This fluid exhibits improved viscosity-temperature characteristics, decreased viscosity and improved fluidity at low temperatures.
这是一种用于汽车牵引驱动的液体,包括(A)一种选择自
双环[2.2.1]庚烷环、
双环[3.2.1]辛烷环、双环[3.3.0]
辛烷环和
双环[2.2.2]辛烷环的含有两个桥接环的碳氢化合物,以及(B)一种含有至少一个季碳原子和环结构的碳氢化合物,其在40°C下的运动粘度为10mm2/s或更小,并且在-40°C时的粘度为40,000Pa·s或更小,闪点为140°C或更高。该液体在高温下表现出很高的牵引系数,在低温下具有非常小的粘度。还提供了一种含有14至17个碳原子且具有粘度指数为0或更高的特定
双环[2.2.1]庚烷衍
生物的牵引驱动液体。该液体表现出改善的粘度-温度特性,在低温下具有降低的粘度和改善的流动性。