摘要:
A lubricant composition comprising an oil of lubricating viscosity and an N-hydrocarbyl-substituted γ-aminoester or γ-aminothioester, wherein the N-hydrocarbyl substituent comprises a hydrocarbyl group of at least 3 carbons atoms, with a branch at the 1 or 2 position of the hydrocarbyl chain, provides exhibits basicity and good seal performance.
摘要:
Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines can be ameliorated by combined use of derivatized high molecular weight olefin copolymers and high molecular weight nitrogen-containing dispersant.
摘要:
Hydrocarbyl substituted carboxylic compositions and derivatives thereof useful as additives for lubricating oil and fuel compositions. Carboxylic composition are derived from (A) an olefinically unsaturated hydrocarbon, said hydrocarbon having at least one allylic hydrogen atom, and (B) an α,β-unsaturated carboxylic compound prepared by reacting (1) an active methylene compound of the formula and (2) a carbonyl compound of the general formula wherein Ra is H or hydrocarbyl and Rb is a member of the group consisting of H, hydrocarbyl and wherein each R′ is independently R or OR and each R is, independently, H or a hydrocarbyl group; and lower alkyl acetals, ketals, hemiacetals and hemiketals of the carbonyl compound (2). Carboxylic derivative compositions are obtained by reacting the carboxylic compositions with a reactant selected from the group consisting of (a) amines characterized by the presence within their structure of at least one condensable H—N
摘要:
Hydrocarbyl substituted C.sub.4 to C.sub.10 monounsaturated dicarboxylic acid, anhydrides or esters, e.g. polyisobutenyl succinic anhydride, preferably made by reacting polymer of C.sub.2 to C.sub.10 monoolefin, preferably polyisobutylene, having a molecular weight of about 1500 to 5,000, preferably with a C.sub.4 to C.sub.10 monounsaturated acid, anhydride or ester, preferably maleic anhydride, such that there are 1.05 to 1.25 dicarboxylic acid producing moieties per molecule of said olefin polymer used in the reaction mixture. The resulting materials are useful per se as oil additives, or may be further reacted with amines, alcohols, amino alcohols, boric acid, etc. to form dispersants.
摘要:
Novel dispersant mixtures are provided, having improved lubricating oil performance characteristics, comprising nitrogen or ester containing dispersants selected from the group consisting of oil soluble salts, amides, imides, oxazoline and esters or mixtures thereof, wherein a first dispersant comprises a long chain hydrocarbon substituted mono- and dicarboxylic acid or their anhydrides derived from polymers of C.sub.2 to C.sub.10 monoolefins wherein the polymer has a number average molecular weight of at least about 1300 and wherein the second dispersant component is derived from such polymers having a number average molecular weight of from about 700 to 1150. The relatively high molecular weight dispersant is provided with from about 1.05 to 1.25 moles per mole of polyolefin of an alpha or beta unsaturated C.sub.4 to C.sub.10 dicarboxylic acid or anhydride or ester thereof. The relatively lower molecular weight dispersant is provided with from about 1.2 to 2.0 moles per mole of polyolefin of an alpha or beta unsaturated C.sub.4 to C.sub.10 dicarboxylic acid, anhydride or ester thereof. It has been found that mixtures of such high molecular weight-low functionality dispersants and low molecular weight-high functionality dispersants provides a dispersant, suitable for use in oleaginous materials such as lubricating oils, which provide surprisingly improved engine performance properties.
摘要:
The invention pertains to oil soluble copolymers derived from ethylene and 1-butene which have a number average molecular weight between about 1,500 and 7,500, at least about 30 percent of all polymer chains terminated with ethylvinylidene groups, and ethylene-derived content of not greater than about 50 weight percent, and which form solutions in mineral oil free of polymer aggregates, as determined by light scattering measurements. Lubricating oil additives, particularly dispersants, produced by the functionalization and derivatization of these copolymers have enhanced performance (e.g., improved dispersancy and pour point) in lubricating oil compositions, attributable in part to the combination of properties characterizing the copolymers.
摘要:
A carboxylic composition comprising a mixture of hydrocarbon substituted carboxylic acylating agents, said mixture comprising (A) a polyolefin substituted carboxylic acylating agent prepared by reacting a polyolefin with an .alpha.,.beta.-unsaturated carboxylic reactant; and (B) a terpolymer substituted carboxylic acylating agent prepared by reacting a terpolymer with at least one carboxylic reactant selected from the group consisting of compounds of the formula R.sup.3 C(O)(R.sup.4).sub.n C(O)OR.sup.5 (IV) wherein each of R.sup.3 and R.sup.5 is independently H or a hydrocarbyl group, R.sup.4 is a divalent hydrocarbylene group, and n is 0 or 1, and reactive sources thereof, derivatives of the foregoing carboxylic compositions, with one or more of (1) an amine characterized by the presence within its structure of at least one HN
摘要:
Reaction products of polymers of C.sub.2 -C.sub.6 -olefins having an average degree of polymerization P of from 5 to 100 and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen are used as additives for fuels, in particular for fuels for gasoline engines.
摘要:
A succinimide dispersant, which is the reaction product of hydrocarbons or polymers functionalized by halogenation (e.g. chlorination), thermal "ene" reaction or free radical grafting and derivatized with a heavy polyamine. A heavy polyamine is a mixture of polyalkylenepolyamines comprising small amounts of lower polyamine oligomers such as tetraethylene pentamine and pentahexamine but primarily oligomers with 7 or more nitrogens, 2 or more primary amines per molecule, and more extensive branching than conventional polyamine mixtures.
摘要:
A Koch functionalized product which is the reaction product of at least one polymer having a number average molecular weight of at least 500 and at least ethylenic double bond per polymer chain, with carbon monoxide and a nucleophilic trapping agent. The invention includes functionalized polymer, derivatives thereof and methods of making the same.