A mineral insulating oil, a process for preparing a mineral...

H - Electricity – 01 – B

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H01B 3/22 (2006.01) C10G 67/00 (2006.01) C10M 101/02 (2006.01)

Patent

CA 2620571

The invention provides for a mineral insulating oil having a naphthenic base oil and a paraffinic base oil wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a mineral insulating oil having a naphthenic base oil, a paraffinic base oil, and an antioxidant agent wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a process for producing a mineral insulating oil including contacting a naphthenic base oil and a paraffinic base oil wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a process for producing a mineral insulating oil including contacting a naphthenic base oil, a paraffinic base oil, and an antioxidant agent wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1.

L'invention concerne une huile isolante minérale comprenant une huile de base naphténique et une huile de base paraffinique, l'huile de base naphténique présentant un rapport soufre total/azote basique inférieur à environ 80:1. L'invention concerne également une huile isolante minérale comprenant une huile de base naphténique, une huile de base paraffinique et un agent antioxydant, l'huile de base naphténique présentant un rapport soufre total/azote basique inférieur à environ 80:1. Par ailleurs, l'invention concerne un procédé destiné à produire une huile isolante minérale et consistant à mettre en contact une huile de base naphténique et une huile de base paraffinique, l'huile de base naphténique présentant un rapport soufre totale/azote basique inférieur à environ 80:1. L'invention se rapporte en outre à un procédé destiné à produire une huile isolante minérale et consistant à mettre en contact une huile de base naphténique, une huile de base paraffinique et un agent antioxydant, l'huile de base naphténique présentant un rapport soufre total/azote basique inférieur à environ 80:1.

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