Water-based hydraulic fluid containing an alkyl dialkanolamide.

摘要

Hydraulic fluids or metalworking lubricants are prepared utilizing mixtures of water and, as lubricants and corrosion inhibitors, an alkyl dialkanolamide, a polyoxyethylene ester, and an ethoxylated alkylaryl phosphate ester. The compositions have improved extreme pressure lubricating and wear preventing characteristics and are nonflammable. The compositions can be thickened if desired using a polyglycol-type thickener and can contain conventional corrosion inhibiting and extreme pressure lubricating additives known in the prior art. Stable concentrates comprising a phosphate ester, a polyoxyethylene ether, and an alkyl alkanolamide can be prepared.