05017733 is referenced by 22 patents and cites 18 patents.

An electrical insulating oil composition which comprises 45% by weight or more of at least 2 members selected from the group consisting of (a) m-ethylbiphenyl, (b) p-ethylbiphenyl, (c) o-benzyltoluene, (d) m-benzyltoluene, (e) p-benzyltoluene, and (f) 1,1-diphenylethane; and the remainder of non-condensed bicyclic aromatic hydrocarbons having not more than 17 carbon atoms besides the above 6 components; and is characterized in that, when the temperature of the composition is -40.degree. C., (I) the total quantity of solid phase obtained by calculating according to the following solid-liquid equilibrium equation is 45% by weight or less relative to the total quantity of the composition, and (II) in the liquid phase composition calculated by the following solid-liquid equilibrium equation, the total quantity of the compounds (a) to (f) is 40% by weight or more and the viscosity of this liquid phase is 500 cSt or lower, ##EQU1## wherein X.sub.i is the equilibrium mole fraction of a component i in the liquid phase; .DELTA.H.sub.i.sup.f is a heat of fusion (cal.mol.sup.-1); T.sub.i.sup.f is a meltinig point (K); T is the temperature (K); and R is the gas constant (cal.mol.sup.-1.K.sup.-1).

Title
Electrical insulating oil composition
Application Number
7/93813
Publication Number
5017733
Application Date
September 4, 1987
Publication Date
May 21, 1991
Inventor
Hideyuki Dohi
Yokohama
JP
Keiji Endo
Yokosuka
JP
Shigenobu Kawakami
Ichikawa
JP
Atsushi Sato
Tokyo
JP
Agent
Scully Scott Murphy & Presser
Assignee
Nippon Petrochemicals Company
JP
IPC
H01G 4/22
H01B 3/24
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