Abstract:
1. IN THE ART OF LUBRICATION OF A CONTROLLED-SLIP DIFFERENTIAL WHICH HAS STARTED TO SLIP EXTENSIVELY DUE TO SUBSTANTIAL WEAR, THE IMPROVEMENT WHEREIN THE PREVIOUSLY USED LUBRICANT IS REPLACED BY A LUBRICANT CONSISTING ESSENTIALLY OF NON-HYDROCARBON ADDITIVES AND A HYDROCARBON BASE STOCK HAVING A KINEMATIC VISCOSITY AT 210*F. IN THE RANGE OF 1.5-200.0 CS. AND CONSISTING ESSENTIALLY OF A BLEND OF AT LEAST ONE C13-C29 NAPHTNENE AND FROM 0.1-20 PARTS BY WEIGHT, BASED ON SAID NAPHTHENE OF AT LEAST ONE MEMBER FROM AT LEAST ONE OF THE FOLLOWING GROUPS (A) AND (B): (A) A SYNTGETIC LIQUID C3-C8 OLEFIN HOMOPOLYMER; AND (B) A MEMBER FROM GROUP (A) ABOVE WHICH IS AT LEAST PARTIALLY HYDROGENATED; AND WHEREIN THE AMOUNT OF SAID BLEND WHICH IS PRESENT IN SAID BASE STOCK IS SUFFICIENT TO PROVIDE A GREATER COEFFICIENT OF TRACTION, MEASURED AT 600 FT./MIN., 200*F., 400,000 P.S.I., THAN WOULD BE PROVIDED BY SUBSTITUTION OF THE SAME AMOUNT OF ASTM OIL NO. 3 FOR SAID BLEND IN SAID BASE STOCK.
Abstract:
Polyolefins, paraffins and polar compounds containing a gemstructured hydrocarbon ''''backbone'''' are useful as traction fluids or as components of traction fluids. For example, compositions, useful as additives to libricants (e.g., components of traction fluids), are produced by oxonolysis of polyolefins, particularly of polyisobutylene oligimers containing at least one pair of maximally crowded geminal methyl groups. For example, ozonolysis of the novel polyisobutylenes can produce oxygenated derivatives (ketones, esters, acids, aldehydes, alcohols, etc.) which are useful as components of traction fluids. Blends of the ketones or of mixtures of the acids and ketones with a base oil (e.g., a paraffinic lube, naphthenic lube, a hydrogenated naphthenic or paraffinic lube, polyolefins or hydrogenated polyolefins) are especially useful as traction fluids or as a lubricant for a friction drive or a limited slip differential. Other polar compounds, useful as additives to lubricants or other mineral oil products (e.g., rubber process oils) can be obtained by conversion of polyisobutylene oligimers to polar compounds containing such functional groups as amine, imine, thioketone, amide, thioester, phosphate esters of the alcohols, ether, oxime, acyl halide, acyl hydrazide, chloride, bromide and maleic anhydride adducts. Salts of the carboxylic acids can also be useful as lubricant additives. A tin complex can also be made which has antiwear properties.
Abstract:
POLAR COMPOUNDS CONTAINING A GEM-STRUCTURED HYDROCARBON "BACKBONE" ARE USEFUL AS TRACTION FLUIDS OR AS COMPONENTS OF TRACTION FLUIDS. FOR EXAMPLE, COMPOSITIONS, USEFUL AS ADDITIVES TO LUBRICANTS (E.G., COMPONENTS OF TRACTION FLUIDS), ARE PRODUCED BY OZONOLYSIS OF POLYOLEFINS, PARTICULARLY OF POLYISOBUTYLENE OLIGIMERS CONTAINING AT LEAST ONE PAIR OF MAXIMALLY CROWDED GEMINAL METHYL GROUPS. FOR EXAMPLE, OZONOLYSIS OF THE NOVEL POLYISOBUTYLENES CAN PRODUCE OXYGENATED DERIVATIVES (KETONES, ESTERS, ACIDS, ALDEHYDES, ALCOHOHOLS, ETC.) WHICH ARE USEFUL AS COMPONENTS OF TRACTION FLUIDS. ONE SUCH ALCOHOL IS 1,1,3,3,5,5,7,7,-OCTAMETHYL-1-OCTANOL. OTHER COMPOUNDS ARE 4,4,6,6,8,8-HEXAMETHYL - 2 - NONANONE AND 2,2,6,6,8,8-HEXAMETHYL-4-NONANONE. BLENDS OF THE KETONES OR OF MIXTURES OF THE ACIDS AND KETONES WITH A BASE OIL (E.G., PARAFFINIC LUBE, NAPHTHENIC LUBE, A HYDROGENATED NAPHTHENIC OR PARAFFINIC LUBE, POLYOLEFINS OR HYDROGENATED POLYOLEFINS) ARE ESPECIALLY USEFUL AS TRACTION FLUIDS OR AS A LUBRICANT FOR A FRICTION DRIVE OR A LIMITED SLIP DIFFERENTIAL.