反应详情

Into a 2 liter autoclave, 1,500 g of the dimer of olefins containing 2-methylene-3-methylbicyclo[2.2.1]heptane and 2,3-dimethylbicyclo[2.2.1]-hept-2-ene as the major components which was obtained in Comparative Example 1 was placed and the resultant mixture was heated at 300° C. for 7 hours under stirring. After the reaction mixture was cooled, 30 g of a nickel/diatomaceous earth catalyst for hydrogenation (manufactured by NIKKI CHEMICAL Co., Ltd.; “N-113”) was added, and the hydrogenation was conducted (the hydrogen pressure: 3 MPa; the reaction temperature: 250° C.; the reaction time: 5 hours). After the reaction was completed, the catalyst was removed by filtration. The filtrate was rectified under a reduced pressure, and 155 g of (methylcyclopentylmethyl)dimethyl-bicyclo[2.2.1]heptane (Fluid 24) was obtained as a fraction having a boiling point in the range of 127 to 130° C./9,060 Pa. Fluid 24 was mixed with Fluid A obtained in Comparative Example 1 in an amount such that the content of Fluid 24 in the entire fluid was 10% by weight. The results of the measurements of the properties and the traction coefficient of the fluid are shown in Table 7.

1. customwas obtained in Comparative Example 1
2. temperatureAfter the reaction mixture was cooled
3. custom250° C.
4. custom5 hours
5. customthe catalyst was removed by filtration