Abstract: A lubricating oil composition containing in combination an acylating agent substituted with a polymer of an alkene with 6 to 40 carbon atoms and an acylating agent substituted with polyisobutylene provides improved viscometric properties for dispersants used in internal combustion engines.

Abstract: A composition of matter comprising an amine acylated with a hydrocarbyl group substituted carboxylic acylating agent containing an average of from 1.3 to 1.6 groups derived from &agr;,&bgr;-unsaturated carboxylic compounds per {overscore (M)}n of the hydrocarbyl group, wherein the hydrocarbyl group has {overscore (M)}n determined by GPC ranging from 1500 to 3000, the amine comprises polyamine bottoms and said acylated amine has total base number (TBN) ranging from 17 to 35. A method for preparing the composition, lubricating oils containing the composition and, in another embodiment, lubricating oil compositions of this invention further comprising a metal overbased sulfonate detergent.

Abstract: A lubricant additive gel formed by the gellation of two or more lubricant additives for the slow release of the additive components into a fluid. The lubricant additive gel slowly releases into its component lubricant additives when contacted with the fluid such as an oil thereby serving as a lubricant fluid such as an oil thereby.

Abstract: A dispersant is prepared from an amine and a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl substituent is a polymerized olefin having a polydispersity {overscore (M)}w/{overscore (M)}n of greater than 5. Such polyolefin substituents are prepared by polymerization of olefins in the presence of a calcined catalyst comprising a partially or fully neutralized ammonium salt of a heteropolyacid.

Abstract: A dispersant is prepared from an amine and a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl substituent is a polymerized olefin having a polydispersity {overscore (M)}w/{overscore (M)}n of greater than 5. Such polyolefin substituents are prepared by polymerization of olefins in the presence of a calcined catalyst comprising a partially or fully neutralized ammonium salt of a heteropolyacid.

Abstract: A dispersant is prepared from an amine and a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl substituent is a polymerized olefin having a polydispersity {overscore (M)}w/{overscore (M)}n of greater than 5. Such polyolefin substituents are prepared by polymerization of olefins in the presence of a calcined catalyst comprising a partially or fully neutralized ammonium salt of a heteropolyacid.

Abstract: A carboxylic composition comprising hydrocarbon substituted carboxylic acylating agents prepared by reacting a polyolefin and a terpolymer, simultaneously or individually in any order, with at least one carboxylic reactant selected from the group consisting of compounds of the formula R3C(O)(R4)nC(O)OR5 (IV) wherein each of R3 and R5 is independently H or a hydrocarbyl group, R4 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<group; (2) an alcohol; (3) a reactive metal or a reactive metal compound; and (4) a mixture of two or more of (1) through (3); the components of (4) being reacted with the mixture of carboxylic acylating agents simultaneously or sequentially, in any order, and additive concentrates and lubricating oil and fuel compositions containing these compositions.

Abstract: Methods are revealed for producing polyolefin substituted carboxylic acylating agents having less than 1000 ppm chlorine, and reaction products formed therefrom such as dispersants. The carboxylic acylating agents are formed by reacting a polyolefin having labile halogen content with an .alpha.-.beta. unsaturated carboxylic acid. The products formed in this invention are used in lubricating compositions.

Abstract: 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.

Abstract: Polyalkylene substituted carboxylic acylating agents which contain chlorine are synthesized by chlorine induced condensation of polyalkylenes and .alpha.-.beta. unsaturated carboxylic groups are treated with sulfur to reduce chlorine content of the carboxylic acylating agent.