USABLE HIGH-PRESSURE LUBRICANT, ESPECIALLY FOR HIGH-PRESSURE COMPRESSORS

摘要

A lubricant is a mixture comprising 40-60 percent by weight of white oil and/or 60-40 percent by weight of polybutene and/or polyisobutene, at least two usable lubricating power-improving additives being composed of by esters saturated fat acids and high-molecular-weight alcohol groups, whereof the overall content of the said additives is 0.1-3.0 percent by weight. At least one of the additives is composed of such ester with at least one free alcohol group. Unsaturated castor oil is a possible additive as well. The lubricant contains 0.05-0.1 percent by weight of at least one antioxidant agent, i.e. usable anisole derivative and/or usable derivative of a pentaerythritol ester and fat acid ester in an overall amount ranging from 0.05 to 0.1 percent by weight. The lubricant further contains a metal-binding deactivator, e.g. a succinimide derivative or amino acid derivative, e.g. N-acyl-sarcosan, in an overall content ranging from 0.005 to 0.5 percent by weight.