Chemistry of hydrocarbon compounds – Product blend – e.g. – composition – etc. – or blending process... – Fluent dielectric
Patent
1987-09-04
1991-05-14
Pal, Asok
Chemistry of hydrocarbon compounds
Product blend, e.g., composition, etc., or blending process...
Fluent dielectric
252570, 361315, 361327, 585 25, H01G 422, H01B 322
Patent
active
050157930
ABSTRACT:
An electrical insulating oil composition having good low temperature characteristics which comprises at least 4 members selected from the group consisting of (a) m-ethylbiphenyl, (b) p-ethylbiphenyl, (c) o-benzyltoluene, (d) m-benzyltoluene, (e) p-benzyltoluene, (f) 1,1-diphenylethane, and (g) 1,1-diphenylethylene; and is characterized in that the proportion of solid phase at a temperature of -40.degree. C. of the electrical insulating oil composition is not more than 45% by weight and the proportion of the total quantity of solid phase is calculated according to the following general equation of solid-liquid equilibrium: ##EQU1## wherein X.sub.i is the equilibrium mole fraction of a component i in the liquid phase of the composition, .DELTA.H.sub.i.sup.f is the heat of fusion (cal.mol.sup.-1), T.sub.i.sup.f is the melting point (K), t is the temperature (K), and R is the gas constant (cal.mol.sup.-1.K.sup.-1).
REFERENCES:
patent: 4054937 (1977-10-01), Mandelcorn et al.
patent: 4266264 (1981-05-01), Mandelcorn et al.
patent: 4320034 (1982-03-01), Lapp et al.
patent: 4409413 (1983-10-01), Iwayama et al.
patent: 4442027 (1984-04-01), Sato et al.
patent: 4493943 (1985-01-01), Sato et al.
patent: 4506107 (1985-03-01), Sato et al.
patent: 4523044 (1985-06-01), Commandeur et al.
patent: 4543207 (1985-09-01), Sato et al.
patent: 4543207 (1985-09-01), Sato et al.
patent: 4549034 (1985-10-01), Sato et al.
patent: 4568793 (1986-02-01), Sato et al.
patent: 4621302 (1986-11-01), Sato et al.
patent: 4639832 (1987-01-01), Sato et al.
patent: 4642730 (1987-02-01), Sato et al.
patent: 4681980 (1987-07-01), Sato et al.
patent: 4734824 (1988-03-01), Sato et al.
patent: 4755275 (1988-07-01), Sato et al.
Dohi Hideyuki
Endo Keiji
Kawakami Shigenobu
Sato Atsushi
Nippon Petrochemicals Company Limited
Pal Asok
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