| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fluid compsn. low in dynamic viscosity under atmospheric pressure, reduced in energy loss caused by agitation, high in power transmission efficiency and high in traction coefficient by using a mixture of two specific compds. SOLUTION: A compd. (A) of the general formula I (wherein the six- membered ring is a satd. hydrocarbon ring; R<1> and R<2> are each methyl; and m and n are each 0 to 2) is mixed with a compd. (B) of the general formula II (wherein the six-membered ring, R<1> , R<2> , m and n are each the same as defined in the formula I) at an (A) to (B) mixing ratio of 42:58 to 60:40 in terms of mol% in accordance with the necessary value of traction coefficient in such a way as to form a hydrogen bond between the two molecules, whereby a fluid compsn. is obtd. When the compd. (A) is cyclohexylamine and the compd. (B) is cyclohexanone, the highest traction coefficient of 0.11 is exhibited at an (A) to (B) mixing ratio of 50:50 in terms of mol% as shown in the figure, while an (A) to (B) mixing ratio of 48:52 to 52:48 in terms of mol% will suffice for securing the traction coefficient (0.06) of a fluid now in commercial use. |
