权利要求:
Claims1. A use of a blend comprisingA) an amphiphilic amine, andB) an amphiphilic acid for increasing the electric conductivity of a lubricant based on a hydrocarbon oil.2. The use according to claim 1 where the weight ratio of the amphiphilic amine and the amphiphilic acid is from 5:1 to 1 :5.3. The use according to claim 1 or 2 where the lubricant comprises 20 to 1000 ppm of the amphiphilic amine, and 20 to 1000 ppm of the amphiphilic acid.4. The use according to any of claims 1 to 3 where the amphiphilic amine comprises an imid- azolin group and a Ce-32 hydrocarbon group.5. The use according to any of claims 1 to 4 where the amphiphilic amine is a compound of formula (A1)6. The use according to any of claims 1 to 5 where the amphiphilic acid comprises an unpolar group and a polar group, which contains an acid group selected from a carboxylic acid group, a sulfonic acid group, or a phosphonic acid group.7. The use according to any of claims 1 to 6 where the amphiphilic acid comprises a carboxylic acid group and a Ce-32 hydrocarbon group or at least two isobutyl groups; or a sulfonic acid group and a Ce-32 hydrocarbon group.8. The use according to any of claims 1 to 7 where the carboxylic acid is selected from compounds (B1), (B2), (B3), (B4), (B5),where x is from 11 to 13 and n from 2 to 15,, fatty acids, or alkylbenzene sulfonic acids.9. The use according to any of claims 1 to 8 where lubricant comprises at least 50, 60, 70, 80 or 90 wt% of the hydrocarbon oil.10. The use according to any of claims 1 to 9 where electric conductivity of the hydrocarbon oil is below 30 pS/m.11. The use according to any of claims 1 to 10 where electric conductivity of the lubricant is increased to at least 30 pS/m.12. The use according to any of claims 1 to 11 where the lubricant is a turbine oil or a hydraulic oil.13. A method for increasing the electric conductivity of a lubricant based on a hydrocarbon oil comprising the step of contacting the hydrocarbon oil with a blend comprisingA) an amphiphilic amine, andB) an amphiphilic acid.14. A lubricant based on a hydrocarbon oil comprising a blend comprisingA) an amphiphilic amine which is a compound of formula (A1)B) an amphiphilic acid which is selected from compounds (B1), (B3), (B4), (B5)(B3) where x is from 11 to 13 and n from 2 to 15, andfatty acids, or alkylbenzene sulfonic acids. The lubricant according to claim 14 where the weight ratio of the amphiphilic amine and the amphiphilic acid is from 5:1 to 1 :5. The lubricant according to claim 14 or 15 comprising 20 to 1000 ppm of the amphiphilic amine, and 20 to 1000 ppm of the amphiphilic acid.