Patent ID: 7713315

Claim:
A mineral oil distillate composition having a water content of less than 150 ppm and a conductivity of at least 50 pS/m, which comprises mineral oil distillate, from 0.1 to 200 ppm of at least one alkylphenol-aldehyde resin and from 0.1 to 200 ppm of at least one nitrogen-containing polymer selected from the group consisting of a) a copolymer prepared by direct copolymerization of at least one nitrogen-containing comonomer with a further comonomer selected from the group consisting of an oil soluble ester of an ethylenically unsaturated carboxylic acid, an oil soluble vinyl ester, an oil soluble vinyl ether which bears a C 4 - to C 40 -alkyl radical or an olefin having from 6 to 42 carbon atoms, b) a copolymer of ethylene with an ethylenically unsaturated nitrogen-containing comonomer, and c) a polymeric polyamine, prepared by condensation of an aliphatic primary monoamine or of an N-alkylalkylenediamine with epichlorohydrin or glycidol.