Exxon Research and Engineering Company

Christopher Olavesen

Bruce M Sankey

Kevin David Butler

John B Gilbert

The present invention is directed to the production of a formulated transformer oil by the process involving fractionating the product coming from a hydrocracker to produce a distillate boiling in the transformer oil range, dewaxing the fraction, optionally hydrofinishing the fraction and adding to said fraction an effective amount of anti-oxidant and/or pour point depressant. The formulated transformer oil produced by this process has properties equivalent to those of formulated naphthenic transformer oil.

Process for producing transformer oil from a hydrocracked stock

Waxy, normal paraffin-type hydrocarbons present in petroleum oil feedstocks are selectively hydrocracked to hydrocarbons boiling below the boiling range of the feedstock by contacting the oil, in the presence of hydrogen, with a catalyst comprising a hydrogen form Zeolite L crystalline alumino-silicate containing at least one catalytic metal component selected from Group VIII and/or Group VI of the Periodic Table. This process is useful for dehazing oils such as white oils, for decreasing the pour point of jet fuels, for dewaxing lube oil feedstocks, including transformer oils and simultaneously reduces the aromatics content of the oil.

Catalytic dewaxing with a hydrogen form zeolite L catalyst

An improved process for producing low pour point, high VI synthetic oils from feedstocks containing wax and residual olefinic unsaturation, said feedstocks having been obtained by thermal, non-catalytic polymerization of linear, C.sub.6 -C.sub.20 carbon atom monoalpha-olefins. The improvement comprises simultaneously hydrogenating and catalytically dewaxing the feedstock by contacting said feedstock and hydrogen with a hydrogen form mordenite catalyst at elevated temperature and pressure, thereby producing a stable synthetic oil of high viscosity index and low pour point.

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Sarnia, Canada

Christopher Olavesen