Mineral oils with improved conductivity and cold flowability

Abstract

A mineral oil distillate having a water content of less than 150 ppm and a conductivity of at least 50 pS/m, comprises 0.1-200 ppm at least one alkylphenolaldehyde resin and 0.1-200 ppm at least one nitrogen-containing polymer.

Description

technical field [0001] The present invention relates to the use of alkylphenol-aldehyde resins and nitrogen-containing polymers for improving the electrical conductivity of low water mineral oil fractions, and to mineral oil fractions to which additives are added. Background technique [0002] In the course of increasingly stringent environmental legislation, the content of sulfur-containing compounds and aromatic hydrocarbons in mineral oil fractions must be reduced even further. But other polar and aromatic compounds are also removed at the same time in the refinery process used to produce on-spec mineral oil quality. Here, too, the absorption capacity of oil for water often decreases. As a side effect, the electrical conductivity of these mineral oil fractions is thereby greatly reduced. Consequently, static charges generated in the distribution chain and in the equipment of the consumer cannot be balanced, as especially at high flow rates, eg during circulation pumping...

AI Technical Summary

Problems solved by technology

But for these oils, the subsequent addition of water only leads to the dispersion of undissolved water in the oil, which does not contribute to the improvement of conductivity, but instead leads to increased corrosion problems and, at low temperatures, the risk of freezing and Resulting clogging of delivery lines and filters

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