Abstract: Dispersants containing basic amine groups are passivated toward fluorohydrocarbon compositions by reaction with a passivating amount of a dicarboxylic acid or anhydride.

Abstract: A lubricant and fuel composition comprising di-n-hexyl 1,3-cyclohexanedicarboxylate.

Abstract: A lubricant and fuel composition comprising di-n-hexyl 1,3-cyclohexanedicarboxylate.

Abstract: An oxidized Mannich condensation product of an oxidized olefin polymer, amine and formaldehyde yielding reactant and lube oils containing these products.

Abstract: Mild oxidation of polyamine crankcase dispersants passivates basically reacting polyamine dispersants to fluorocarbon compositions used in engines.

Abstract: A process for producing alkenyl substituted anhydrides which comprises introducing one mole of polypropene or polybutene having a number average molecular weight of 200-3000, 0.8-5.0 moles of the anhydride of an unsaturated dicarboxylic acid and 5-200 ppm of an additive which suppresses the formation of tarry materials and undesirable reaction side products and/or improves yield, into a reaction zone, reacting said materials at a temperature from about 150.degree. C to about 300.degree. C to form the alkenyl anhydride, distilling off and condensing the unreacted anhydride from the reaction mixture, recovering the alkenyl substituted anhydride, and returning at least a portion of the recovered unreacted anhydride to a reaction zone for reaction with an alkenyl material.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when such polybutenes contain rather small amounts, i.e., 5 to 200 ppm, of halogenated, preferably chlorinated and/or brominated aliphatic or aromatic hydrocarbons. Preference is given to such halogen containing compounds having a sufficient vapor pressure at a temperature in the range of 100.degree. to 300.degree. C to be substantially completely removed at absolute pressures in the range of 5 to 760 mm Hg.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when reacted in the presence of rather small amounts, i.e., 5 to 200 ppm, of alpha halogen-containing, preferably chlorine or bromine-containing, aliphatic or aromatic carbonyls including acetals as additives. Use of such halogen-containing additives in the addition reaction of polybutene with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when such polybutenes contain rather small amounts, i.e., 5 to 200 ppm, of halogenated, preferably chlorinated and/or brominated carboxylic or sulfonic acid. Preference is given to such halogen containing compounds having a sufficient vapor pressure at a temperature in the range of 100.degree. to 300.degree. C to be substantially completely removed at absolute pressures in the range of 5 to 760 mm Hg. Use of such polybutenes containing such halogenated compounds in the addition reaction with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides and enhance yield of desired alkenyl-substituted anhydride.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when such polybutenes contain rather small amounts, i.e., 5 to 200 ppm, of brominated dialkylhydantoin. Preference is given to such bromine containing compounds having a sufficient vapor pressure at a temperature in the range of 100.degree. to 300.degree.C. to be substantially completely removed at absolute pressures in the range of 5 to 760 mm Hg. Use of such polybutenes containing such brominated compounds in the addition reaction with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides and enhance yield of desired alkenyl-substituted anhydride.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxlyic acids when such polybutenes contain rather small amounts, i.e., 5 to 200 ppm, of halogenated, preferably chlorinated and/or brominated aliphatic or aromatic hydrocarbons. Preference is given to such halogen containing compounds having a sufficient vapor pressure at a temperature in the range of 100.degree. to 300.degree.C to be substantially completely removed at absolute pressures in the range of 5 to 760 mm Hg.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when such polybutenes contain rather small amounts, i.e., 5 to 200 ppm, of halogenated, preferably chlorinated and/or brominated carboxylic or sulfonic acid. Preference is given to such halogen containing compounds having a sufficient vapor pressure at a temperature in the range of 100.degree. to 300.degree.C to be substantially completely removed at absolute pressures in the range of 5 to 760 mm Hg. Use of such polybutenes containing such halogenated compounds in the addition reaction with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides and enhance yield of desired alkenyl-substituted anhydride.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to 3000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when reacted in the presence of rather small amounts, i.e., 5 to 200 ppm, of alpha halogen-containing, preferably chlorine or bromine-containing, aliphatic or aromatic carbonyls including acetals as additives. Use of such halogen-containing additives in the addition reaction of polybutene with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3,000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when reacted in the presence of rather small amounts, i.e., 5 to 200 ppm, of inorganic halogen preferably chlorine and/or bromine containing compounds. Use of such halogen containing compounds in the addition reaction of polybutene with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides.