1
Atsushi Sato, Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi: Electrical insulating oil composition. Nippon Petrochemicals Company, Scully Scott Murphy & Presser, May 21, 1991: US05017733 (22 worldwide citation)

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-con ...


2
Atsushi Sato, Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi: Electrical insulating oil composition. Nippon Petrochemicals Company, Scully Scott Murphy & Presser, May 14, 1991: US05015793 (16 worldwide citation)

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-d ...


3
Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi, Atsushi Sato: Method for producing electrical insulating oil composition. Nippon Petrochemicals Company, Fisher Christen & Sabol, February 20, 1990: US04902841 (7 worldwide citation)

A method for producing an electrical insulating oil composition composed of benzyltoluene and ditolymethane. The composition is excellent in low-temperature characteristics and contains substantially no chlorine. The method comprises the steps of reacting monocyclic aromatic hydrocarbon with diarylm ...


4
Atsushi Sato, Shigenobu Kawakami, Hideyuki Dohi, Keiji Endo: Electrical insulating oil and oil-filled electrical appliances. Nippon Petrochemical Company, Scully Scott Murphy & Presser, February 4, 1986: US04568793 (6 worldwide citation)

An electrical insulating oil which can be produced easily at low cost, scarcely contains undesirable components of tarry substance, unsaturated compounds and carbonyl compounds, does neither swell nor dissolve plastic materials, and has excellent electrical properties. The electrical insulating oil ...


5
Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi, Atsushi Sato: Method for producing m-benzyltolune. Nippon Petrochemicals, Fisher Christen & Sabol, February 6, 1990: US04899009 (5 worldwide citation)

A method for producing m-benzyltoluene with a high yield and excellent selectivity without producing undesirable heavier by-products. The method is characterized in that toluene and diphenylmethane are allowed to react at a reaction temperature in the range of 170.degree. to 400.degree. C. in the pr ...


6
Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi, Atsushi Sato: Electrical insulating oil comprising improved fraction. Nippon Petrochemicals Company, Fisher Christen & Sabol, January 1, 1991: US04982025 (5 worldwide citation)

An electrical insulating oil mainly comprising a fraction having excellent low temperature characteristics, said fraction being prepared by bringing a by-product oil fraction containing diphenylmethane and 1,1-diphenylethane into contact with alkylbenzenes in the presence of a ZSM-5 type synthetic z ...


7
Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi, Atsushi Sato: Method of producing insulating oil comprising dibenzylbenzene. Nippon Petrochemicals Company, Scully Scott Murphy & Presser, April 21, 1992: US05107395 (5 worldwide citation)

An insulating oil comprising dibenzylbenzenes which is most suitably used for impregnating a metallized plastic film capacitor, is produced by the reaction of benzene or toluene with diphenylmethane or a methyl derivative thereof at 170.degree. C. to 400.degree. C. in the presence of a synthetic cry ...


8
Atsushi Sato, Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi: Oil-filled capacitor. Nippon Petrochemicals, Scully Scott Murphy & Presser, September 26, 1989: US04870221 (5 worldwide citation)

An improved oil-filled capacitor which is excellent in low temperature characteristics. The oil-filled capacitor is composed of at least partially a plastics material and is impregnated with an electrical insulating oil which oil is characterized in that it comprises 0 to 100% by weight of a fractio ...


9
Atsushi Sato, Keiji Endo, Shigenobu Kawakami, Hideyuki Dohi: New electrical insulating oil and oil-filled electrical appliances. Nippon Petrochemicals Company, Scully Scott Murphy & Presser, January 27, 1987: US04639833 (5 worldwide citation)

An improved electrical insulating oil and oil-filled electrical appliances impregnated therewith. The electrical insulating oil has a low viscosity, low pour point and other excellent electrical characteristics and it comprises an isomer mixture of dibenzylbenzenes in which the quantity of p-dibenzy ...


10
Shigenobu Kawakami, Keiji Endo, Hideyuki Dohi, Atsushi Sato: Process for treating by-product oil. Nippon Petrochemicals Company, Fisher Christen & Sabol, December 15, 1992: US05171906 (4 worldwide citation)

A process for treating a by-product oil is disclosed, which comprises treating a raw material containing a heavy oil formed as a by-product in the step of producing alkylbenzene or the like by alkylation of benzene or the like, with a catalyst of crystalline synthetic zeolite having a SiO.sub.2 /Al. ...