Abstract:
The combination of a fuel-soluble succinimide detergent/dispersant, a fuel-soluble liquid carrier or induction aid therefor, and a fuel-soluble cyclopentadienyl manganese tricarbonyl compound can sharply reduce the formation or accumulation of engine deposits such as intake valve deposits in internal combustion engines. In fact, such compositions can function synergistically whereby the effectiveness of a highly effective succinimide-based deposit control additive can be improved by the addition thereto of the manganese compound, the latter not known to be a substance that reduces deposits.
Abstract:
The present invention relates to novel compositions that contain a base oil and certain substituted fullerenes effective to improve the cold flow properties of the base oil. Typically the substituted fullerenes have the general formula:C.sub.Fn (GR.sub.y).sub.xIn the formula C.sub.Fn is a fullerene or mixture of fullerenes, n is the number of carbon atoms in the fullerene, x is an integer from 1 up to the maximum number of sites on the fullerene molecule available for adding substituent groups, G is a linking group that may be absent or present, and when present is an oxygen, sulfur, nitrogen, phenol, aniline, Mannich base or diazocarboxylate-derived group, y is an integer determined by the identity of G and equals 1 when G is absent or when present and selected from the group consisting of oxygen, sulfur and diazocarboxylate-derived linking groups, and equals 1 or 2 when G is a phenol or aniline linking group, and equals 2 when G is a nitrogen linking group, and when y equals 1 R is a substituted or unsubstituted hydrocarbyl group and when y equals 2 at most one R may be hydrogen while the remainder are hydrocarbyl groups, and the R group may be the same or different, and wherein when x is greater than 1 the GR.sub.y may be the same or different and at most one R may be hydrogen. Preferred are substituted fullerenes that are alkylamino-substituted fullerenes. The compositions are useful as flow-improvers properties.
Abstract:
Additives which improve the low-temperature properties of distillate fuels are the oligomeric/polymeric reaction products of one or more bicyclic or alkyl anhydrides or their diacid equivalents and one or more long-chain epoxides or their corresponding acid/diol equivalents, with optional termonomers.
Abstract:
Combinations of (A) an ethylene backbone polymer such as chlorinated polyethylene, or copolymers of 3 to 40 molar proportions of ethylene with a molar proportion of another monomer such as unsaturated esters, other olefins, vinyl chloride, etc., and (B) a polymer having long chain alkyl groups of 18 to 40 carbon atoms such as polymers of unsaturated esters, are cold flow improvers for low viscosity distillate fuel oils.
Abstract:
AN ADDITIVE HAVING DETERGENCY AND LUBRICITY PROPERTIES FOR INCORPORATION IN PETROLEUM HYDROCARBON AND PETROLEUM HYDROCARBON COMOSITIONS CONATINING SAID ADDITIVE. THE ADDITIVE IS THE CONDENSATION PRODUCT OF A POLYETHERPOLYESTER POLYOL CONTAINING FROM 2 TO ABOUT 12 HYDROXYL GROUPS AND A MONOCARBOXYLIC ACID WHEREIN ABOUT 85100% OF THE HYDROXYL GROUPS OF THE POLYOL ARE ESTERIFIED BY CONDENSATION WITH THE MONOCARBOXYLIC ACID. THE ADDITIVE IS GENERALLY INCORPORATED IN HYDROCARBON FUELS AND HYDROCARBON LUBRICATING OILS, BUT ITS GREATEST UTILITY IS IN HYDROCARBON LUBRICATING OILS. THE PREFERRED LUBRICATING OIL COMPOSITION IS A 2-CYCLE ENGINE OIL COMPROSING A MAJOR PROPORTION OF A HYDROCABON LUBRICATNG OIL AND A MINOR PROPORTION OF THE ADDITIVE OF THE INVENTION.
Abstract:
The lubricity of low sulphur fuels is enhanced by incorporation of a lubricity enhancing additive in combination with an ethylene-unsaturated ester copolymer.
Abstract:
An automotive lubricant composition comprising a base fluid and an ashless polymeric dispersant is claimed. The ashless polymeric dispersant has a number average molecular weight of between 500 and 10,000 and comprises a polar tall group which itself comprises a polymeric backbone of 2 to 30 monomeric repeat units, each repeat unit comprising a hydrocarbon chain functionalised by the presence of at least one electronegative element or moiety, the tail group being linked to a polar head group which comprises a polar moiety selected from at least one of acid, ester, amide or alcohol moieties. The dispersant has good dispersancy properties, when used as a sole dispersant or in combination with other dispersants. It provides enhanced seal resistance and has good oxidative stability in automotive applications as compared to current commercial products. Furthermore the low temperature viscosity of the automotive lubricant composition with the designed dispersant is superior to that of a composition with current commercial dispersants and the designed dispersant does not react with ZDDP and reduce the antiwear capabilities of ZDDP.