PREMIUM SYNTHETIC LUBRICANTS

• Main Authors: PAUL JOSEPH BERLOWITZ, JACOB JOSEPH HABEEB, ROBERT JAY WITTENBRINK
• Format: Patent
• Language: English
• Published: 30.08.2004
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

PREMIUM SYNTHETIC LUBRICANTS COMPRISE A SYNTHETIC ISOPARAFFINIC HYDROCARBON BASE STOCK AND AN EFFECTIVE AMOUNT OF AT LEAST ONE, AND TYPICALLY A PLURALITY OF LUBRICANT ADDITIVES SUCH AS A DETERGENT, DISPERSANT, ANTIOXIDANT, ANTIWEAR ADDITIVE, POUT POINT DEPRESSANT, VI IMPROVER AND THE LIKE. THE BASE STOCK IS DERIVED FROM A WAXY, PARAFFINIC, FISCHER-TROPSCH SYNTHESIZED HYDROCARBON FEED FRACTION HAVING AN INITIAL BOILING POINT IN THE RANGE OF ABOUT 343-400°C (650- 750°F) AND CONTINUOUSLY BOILING UP TO AT LEAST 565°C (1050°F), BY A PROCESS WHICH COMPRISES HYDROISOMERIZING THE FEED AND DEWAXING THE ISOMERATE. THE WAXY FEED HAS AT90- T10 TEMPERATURE DIFFERENCE OF AT LEAST 177°C (350°F) AND IS PREFERABLY HYDROISOMERIZED WITHOUT ANY PRETREATMENT, OTHER THAN OPTIONAL FRACTIONATION. THE LUBRICANT MAY ALSO CONTAIN HYDROCARBONACEOUS AND SYNTHETIC BASE STOCK MATERIAL. LUBRICANTS, SUCH AS FULLY FORMULATED MULTIGRADE AUTOMOTIVE CRANKCASE AND TRANSMISSION OILS FORMED BY ADDING A SUITABLE ADDITIVE PACKAGE TO THE ISOPARAFFINIC BASE STOCK HAVE EXHIBITED PERFORMANCE SUPERIOR TO SIMILAR FULLY FORMULATED OILS BASED ON BOTH PAO AND CONVENTIONAL, PETROLEUM DERIVED BASE STOCKS.