Shell Oil Comapny

Steven Allen Holmes

Abraham Robert De Kraker

Krishna Rangraj Kaushik

John Robert Powers

Michael Phillip Smith

Abraham Robert Dekraker

Ronald Wayne Dever

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.

Mineral insulating oil, a process for preparing a mineral insulating oil, and a process for using a mineral insulating oil

Cycloalkane base oil, methods of making cycloalkane base oil, and dielectric liquid comprising cycloalkane base oil, the cycloalkane base oil comprising a quantity of isoparaffins and from 50 wt. % to 70 wt. % cycloalkanes having the formula CHwherein n is from 15 to 30, said quantity of isoparaffins being less than 50 wt. % of said cycloalkane base oil.

Cycloalkane base oils, cycloalkane-base dielectric liquids made using cycloalkane base oils, and methods of making same

The invention relates to a process for the preparation of a low-base number calcium sulfonate that is essentially chloride free. The process involves preparing a sulfonic acid solution by adding a solvent to a sulfonic acid, optionally removing dissolved or entrained SOor SO, mixing the solution with a specific amount of water and calcium hydroxide, heating the mixture, separating out excess calcium hydroxide from the mixture, removing the solvent and recovering the calcium sulfonate product in oil.

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Houston, TX, United States of America

Steven Allen Holmes