TELOMERIZED RAPESEED OIL FOR LUBRICANT ADDITIVES

LUBRICATING OILS DEPEND ON ADDITIVE PACKAGES OF CHEMICAL DERIVATIVES OF LONG CHAIN FATTY ACIDS FOR LUBRICITY, FRICTION REDUCTION AND OTHER FUNCTIONAL PROPERTIES. HIGH ERUCIC ACID RAPESEED (HEAR) OIL IS A SOURCE OF SUITABLE LONGCHAIN FATTY ACIDS AND A MONO-ESTER VERSION OF THIS OIL IS NOW INCLUDED IN LUBRICANT SUPPLEMENTS MARKETED BY INTERNATIONAL LUBRICANTS, INC. (ILI). PRELIMINARY WORK INDICATES THAT THE TRIGLYCERIDE FORM OF HEAR OIL CAN BE MADEINTO FUNCTIONAL DERIVATIVES DIRECTLY, ELIMINATING THE COSTLYCONVERSION TO MONO-ESTERS. RAW HEAR OIL IS UNSUITABLE FOR USE AS A RAW MATERIAL FOR DERIVATIVES USED IN LUBRICANTS DUETO THE PRESENCE OF 15-25% POLYUNSATURATED FATTY ACID CHAINS IN THE TRIGLYCERIDE STRUCTURE. THESE CHAINS ARE THE SOURCE OF OXIDATION AND THERMAL INSTABILITY THAT LIMITS THE USEFUL CONDITIONS OF THE OIL AND ITS DERIVATIVES. A PROCESS CALLEDTELOMERIZATION MINIMIZES THE PRESENCE OF POLYUNSATURATES IN RAPE SEED OIL THROUGH FORMATION OF DIMERS AND TRIMERS BETWEEN THE REACTIVE POLYUNSATURATED FATTY ACID CHAINS. TELOMERIZATION HAS BEEN DEMONSTRATED BY ILI TO PRODUCE A MORE STABLE ADDITIVE BASE FROM HEAR OIL IN TRIGLYCERIDE FORM.