LOW MOLECULAR WEIGHT ETHYLENE/a-OLEFIN INTERPOLYMER AS BASE LUBRICANT OILS

摘要

A LUBRICANT COMPOSITION COMPRISES AN ETHENE/A-OLEFIN INTERPOLYMER HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF LESS THAN 10,000 G/MOL AS A BASE OIL AND AT LEAST ONE OIL ADDITIVE. THE ETHYLENE/A-OLEFIN INTERPOLYMER HAS AT LEAST ONE MOLECULAR FRACTION WHICH ELUTES BETWEEN 40'C AND 130'C WHEN FRACTIONATED USING TREF, CHARACTERIZED IN THAT THE FRACTION HAS A MOLAR COMONOMER CONTENT OF AT LEAST PERCENT HIGHER THAN THAT OF A COMPARABLE RANDOM ETHYLENE INTERPOLYMER FRACTION ELUTING BETWEEN THE SAME TEMPERATURES, WHEREIN SAID COMPARABLE RANDOM ETHYLENE INTERPOLYMER HAS THE SAME COMONOMER(S) AND HAS MELT INDEX, DENSITY, AND MOLAR COMONOMER CONTENT (BASED ON THE WHOLE POLYMER) WITHIN 10 PERCENT OF THAT OF THE ETHYLENE/A-OLEFIN INTERPOLYMER.