Abstract:
Gel-free dispersant additives for lubricating and fuel oil compositions comprise at least one adduct of (A) .alpha.-olefin homopolymer or interpolymer of 700 to 10,000 number average molecular weight, free radically grafted with an average of from about 0.5 to about 5 carboxylic acid producing moieties per polymer chain, and (B) at least one non-aromatic nucleophilic post-treating reactant selected from (i) amine compounds containing only a single reactive amino group per molecule, (ii) alcohol compounds containing only a single hydroxy group per molecule, (iii) polyamine compounds containing at least two reactive amino groups per molecule, (iv) polyol compounds containing at least two reactive hydroxy groups per molecule, (v) aminoalcohol compounds containing at least one reactive amino group and at least one reactive hydroxy group per molecule, and (vi) mixtures of (i) to (v); provided that when said post-treating reactant includes one or more of (iii), (iv) or (v), the reaction between (A) and (B) is conducted in the presence of sufficient chain-stopping or end-capping co-reactant (C) to ensure that the grafted and post-reacted product mixture is gel-free.
Abstract:
A fuel additive composition comprising (a) a polyisobutenyl succinimide derived from ethylenediamine or diethylenetriamine, wherein the polyisobutenyl group has an average molecular weight of about 1200 to 1500 and (b) a nonvolatile paraffinic or naphthenic carrier oil, or a mixture thereof.
Abstract:
The novel polymers of the present invention are prepared by reacting a heterocyclic nitrogen compound containing at least one --N(H)-- group in the ring, an aldehyde N-containing polymer adduct (e.g., an ashless nitrogen-containing dispersant or polyolefin-substituted amine) to form an oil soluble Mannich base derivative useful as dispersant, antiwear and antioxidant additive in oleaginous compositions such as lubricating oils and fuels. Preferred heterocyclic nitrogen compounds are azoles such as benzotriazoles and alkyl-substituted benzotriazoles. The polyolefin-substituted amine can comprises the reaction product of a polyamine and halogenated long chain hydrocarbons.
Abstract:
Improved additives/detergents for lubricant and fuel compositions are obtained by condensing a hydroxyalkyl or hydroxyaryl compound with an amine compound. The condensates according to the present invention are produced by the acid catalyzed condensation of the amine reactant with the hydroxy reactant.
Abstract:
This invention relates to metal salts of the general formulaA.sup.y- M.sup.y+ (I)wherein M represents one or more metal ions, y is the total valence of all M and A represents one or more anion containing groups having a total of about y individual anionic moieties and each antion containing group is a group of the formula ##STR1## wherein each group in (II) is as described in the specification. These salts find utility in lubricants and fuels other than 2-cycle engine lubricants and fuels.
Abstract:
A product formed by reacting at least one acyclic hydrocarbyl substituted succinic acylating agent such as polyisobutenyl succinic anhydride with at least one N-(alkoxy-alkyl) alkanediamine such as N-(isodecyloxypropyl)-1,3-diaminopropane is effective as a detergent-dispersant for liquid fuels and oleaginous liquids.
Abstract:
Certain chemical elements or compounds, smog inhibitors, added to combustible hydrocarbon-base fuels, can reduce, or eliminate, ozone, O.sub.3, an oxidant necessary for the formation of smog and its irritants. A test program demonstrated that atmospheric ozone was reduced an average of about 75% when exhaust gases derived from an automotive engine burning fuel containing an inhibitor were injected into a sealed chamber as compared to the same engine burning fuel containing no additive. In each of the tests using the fuel additive, ozone concentrations approached, or reached, zero for short periods of time, indicating the viability of this method of ozone, and therefore smog, control. This patent is for the purpose of controlling smog formation by the addition of smog inhibitors, such as, but not limited to, iodine or its compounds to hydrocarbon-base fuels prior to, or during, the combustion cycle of these fuels.
Abstract:
A fuel composition for internal combustion engines, and more particularly, a fuel composition for internal combustion engines containing less than about 0.5 gram of lead per liter of fuel is described. The fuel composition comprises a major amount of a liquid hydrocarbon fuel and a minor, property improving amount of(A) at least one hydrocarbon-soluble alkali or alkaline earth metal-containing composition, and(B) at least one hydrocarbon-soluble ashless dispersant.When a mixture of the metal-containing composition (A) and the ashless dispersant (B) are incorporated into gasolines containing less than about 0.5 gram of lead per liter of fuel, the treated fuel exhibits improved stability and water tolerance, and when the unleaded or low lead-containing fuels of the present invention are utilized in internal combustion engines, there is a significant reduction in valve seat recession. Methods of reducing valve seat recession in internal combustion engines utilizing lead free or low lead-containing fuels also are described.
Abstract:
Described herein is an additive to hydrocarbon fuels such as gasoline, diesel fuel and the like used, for example, in vehicles and furnaces. The fuel comprises a mixutre of a low molecular weight alcohol, an aliphatic ester, an aromatic hydrocarbon, a halogenated alkene, a hydroxy unsaturated vegetable oil and an aliphatic hydrocarbon. Use of the additive improves fuel efficiency and provides cleaner burning, i.e., reduces engine deposits.
Abstract:
Low boiling aryl fluoroalkane additives, such as benzotrifluoride, are utilized as a fuel additive for internal combustion engines. The additive volatilizes in the combustion chamber thereby giving a smoother running engine, prolonged spark plug life and a reduced octance requirement for high compression engines.