Styrene → HCID 131712717, compound

Participants

Reaction Conditions

Reaction Steps

Twenty-one (21) Kl/hr of the distillate (a mixture of α-methylbenzylxylene and α-methylbenzylethylbenzene) boiling in the range of 300°-319° C. obtained in Example 2, 0.1 Kl/hr of styrene and 0.4 Kl/hr of sulphuric acid (92%) were supplied into a 17-Kl reactor (average residence time: about 48 minutes) and so cooled from outside as to maintain the reaction temperature at 14° C. The resulting effluent from the autoclave was allowed to stand still thereby to separate the lower layer (sulphuric acid) for re-circulation and obtain the upper layer (oil layer). The upper layer so obtained was neutralized with an aqueous solution of sodium hydroxide, washed with water and distilled to recover the unreacted α-methylbenzylxylene/α-methylbenzylethylbenzene mixture for re-circulation and then obtain 270 Kg/hr of a distillate boiling in the range of 193°-220° C. at 3 mm Hg. This distillate was found to be a mixture corresponding to the bis-(α-methylbenzyl) xylene/bis-(α-methylbenzyl) ethylbenzene mixture (9:1) obtained in Example 4. As the residue (after the distillation), 3 Kg/hr of styrene polymers was obtained. Thus, it was found that 95% of the styrene was consumed for the alkylation. Four hundred (400) grams of the aforesaid distillate boiling in the range of 193°-220° C. at 3 mm Hg were hydrogenated to obtain 440 cc of a bis-(α-cyclohexylethyl) dimethylcyclohexane/bis-(α-cyclohexylethyl) ethylcyclohexane mixture (traction fluid (II) of this invention) having a specific gravity (15/4° C.) of 0.90, a refractive index (nD20) of 1.490, a kinetic viscosity of 10.9 cSt (98.9° C.), and a traction coefficient of 0.093 (25° C.) or 0.075 (80° C.).

Provenance & Evidence