Abstract: The present invention is directed to an oil-soluble fuel and lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful fuel and lubricating oil additives, e.g., as dispersants.

Abstract: The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 10,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful lubricating oil additives, e.g., as dispersants.

Abstract: The present invention is directed to an oil-soluble fuel and lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful fuel and lubricating oil additives, e.g., as dispersants.

Abstract: The present invention is directed to an oil-soluble fuel and lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful fuel and lubricating oil additives, e.g., as dispersants.

Abstract: A lubricating oil composition exhibiting improved flow properties, specifically low temperature flow properties, and viscometric properties, particularly low temperature viscometric properties comprising lubricating oil and(i) an amount effective to improve the low temperature flow properties of said lubricating oil composition of additive consisting essentially of at least one low molecular weight non-ethylene containing polymer or interpolymer containing pendent ester groups comprising repeating methylene units derived from mixture of aliphatic alcohols, said mixture containing at least about 25 weight percent C.sub.

Abstract: A lubricating oil composition comprising lubricating oil and(i) an amount effective to improve the low temperature flow properties of said lubricating oil composition of additive consisting essentially of at least one law molecular weight polymer or interpolymer of unsaturated carboxy ester represented by the formula ##STR1## wherein R' is selected from the group consisting of hydrogen and COOR, and R is a C.sub.

Abstract: There is disclosed a lubricating oil composition containing a dual additive combination for reducing the low temperature viscosity properties thereof. Such additive combination comprises a Component A, e.g., a polymethacrylate or esterified styrene/maleic anhydride copolymer and a Component B, e.g., sorbitan tristearate.

Abstract: Compositions are disclosed for improving at least the low temperature flow properties of lubricating oils. The compositions are dual additives including a first component which is a polymer or interpolymer of a C.sub.14 carboxylate, such as a C.sub.14 -dialkyl fumarate/vinyl acetate interpolymer, and a second component which is a lubricating oil flow improver comprising a non-ethylene containing polymer or interpolymer such as dialkyl fumarate/vinyl acetate interpolymer, esterified styrene/maleic anhydride interpolymer, or esterified olefin/maleic anhydride interpolymer.

Abstract: There is disclosed a lubricating oil composition containing a dual additive combination for reducing the low temperature viscosity properties thereof. Such additive combination comprises a Component A, e.g., a polymethacrylate or esterified styrene/maleic anhydride copolymer and a Component B, e.g., sorbitan tristearate.

Abstract: The low temperature properties of a distillate petroleum fuel oil boiling in the range 120.degree. C. to 500.degree. C., and whose 20% and 90% distillation points differ by less than 100.degree. C., and/or whose Final Boiling Point is in the range 340.degree. C. to 370.degree. C. are improved by the addition of a polymer or copolymer having at least 25 wt. % of n-alkyl groups of average number of carbon atoms from 12 to 14 with no more than 10 wt. % containing more than 14 carbon atoms.

Abstract: The low temperature properties of a distillate petroleum fuel oil boiling in the range 120.degree. C. to 500.degree. C., and whose 20% and 90% distillation points differ by less than 100.degree. C., and/or whose Final Boiling Point is in the range 340.degree. C. to 370.degree. C. are improved by the addition of a polymer or copolymer having at least 25 wt. % of n-alkyl groups of average number of carbon atoms from 12 to 14 with no more than 10 wt. % containing more than 14 carbon atoms.

Abstract: A solvent dewaxing process is described comprising mixing a waxy hydrocarbon oil, preferably a waxy petroleum oil, most preferably a waxy lube or specialties oil, with dewaxing solvent and a dewaxing aid comprising (A) a dialkylfumarate-vinyl laurate copolymer and (B) a wax-naphthalene condensation copolymer, a dialkyl fumarate-vinyl acetate copolymer or an ethylene vinyl acetate copolymer and chilling the mixture to yield a slurry comprising solid particles of precipitated wax and a solution of dewaxed oil and solvent and separating said solid wax from dewaxed oil solution.

Abstract: An additive concentrate for incorporation into wax containing petroleum fuel oil compositions to improve low temperature flow properties comprising an oil solution containing:(A) a C.sub.30 -C.sub.300 oil-soluble nitrogen salt and/or amide compound wax crystal growth inhibitor formed by reaction of alicyclic C.sub.4 to C.sub.10 carboxylic acid and long chain secondary amine;(B) an organic acid to improve the solubility of (A) in the oil, which acid includes non-linear carboxylic acids including branched or unsaturated fatty acids, aromatic acids, e.g. benzoic acid, phenols, and organic phosphorus containing acids; and(C) a copolymer of ethylene and an unsaturated ester, e.g. vinyl acetate.

Abstract: An additive combination for improving the cold flow properties of distillate fuels comprises a combination of:(A) a distillate flow improver which is an ethylene containing polymer, preferably a copolymer of ethylene with unsaturated esters, e.g. vinyl acetate;(B) a hydrocarbon polymer of C.sub.2 to C.sub.30 olefin of number average molecular weight of 10.sup.3 to 10.sup.6 or derivatized version thereof, for example copolymers of ethylene and propylene, or polyisobutylene, which are used as lubricating oil V.I. improvers; and(C) a polar oil soluble compound which includes amides, salts, carboxylates, sulfonates, sulfates, phosphates, phenates and borates, having hydrocarbon solubilizing groups, for example salts and amides of polycarboxylic acid such as phthalic anhydride reacted with hydrogenated secondary tallow amine.

Abstract: An additive concentrate for incorporation into wax containing petroleum fuel oil compositions to improve low temperature flow properties comprising an oil solution containing:(a) 3% to 90 wt. % of a C.sub.30 -C.sub.300 oil-soluble nitrogen compound wax crystal growth inhibitor having at least one straight C8-C40 alkyl chain and partial esters,and(b) at least one mole per mole of (a) of an organic acid capable of hydrogen bonding with (a) to improve the solubility of (a) in the oil.

Abstract: An oil soluble copolymer, useful as a pour point depressant for lubricating oils, is a C.sub.22 -C.sub.40, preferably C.sub.32 -C.sub.36, branched alkyl ester based polymer. These alkyl esters of copolymers are essentially free of olefinic unsaturation and have a number average molecular weight of from 1,000 to 40,000, preferably 2,000 to 15,000, optimally 2,000 to 8,000.These alkyl ester copolymers are usefully admixed with lubricants in an amount of from 0.01 to 2 wt. % based on the total weight of the admixture and are of the class consisting of a C.sub.22 -C.sub.40 branched alkyl ester of a copolymer of a C.sub.2 to C.sub.20 1-olefin and maleic anhydride and di-(2-[C.sub.22 to C.sub.40 ] alkyl) fumarate-vinyl C.sub.1 -C.sub.4 alkylate e.g. acetate copolymer.

Abstract: An additive combination for improving the cold flow properties of distillate fuels comprises a combination of:(A) a distillate flow improver which is an ethylene containing polymer, preferably a copolymer of ethylene with unsaturated esters, e.g. vinyl acetate;(B) a hydrocarbon polymer of C.sub.2 to C.sub.30 olefin of number average molecular weight of 10.sup.3 to 10.sup.6 or derivatized version thereof, for example copolymers of ethylene and propylene, or polyisobutylene, which are used as lubricating oil V.I. improvers; and(C) a polar oil soluble compound which includes amides, salts, carboxylates, sulfonates, sulfates, phosphates, phenates and borates, having hydrocarbon solubilizing groups, for example salts and amides of polycarboxylic acid such as phthalic anhydride reacted with hydrogenated secondary tallow amine.

Abstract: An oil-soluble copolymer, useful as a pour point depressant for lubricating oils, is composed of about equimolar amounts of 1-olefins and maleic anhydride, said 1-olefins being a mixture comprising from about 25 to 75, preferably 30 to 55, mole percent of straight chain C.sub.20 -C.sub.24 1-olefins and from about 25 to 75, preferably 45 to 70, mole percent of C.sub.10 -C.sub.14 1-olefins.These useful copolymers are oil-soluble, essentially free of olefinic unsaturation and have a number average molecular weight of from 1,000 to 30,000. Pour point depressant activity of said copolymers is enhanced by esterification with a C.sub.1 to C.sub.8 alcohol, e.g. 2-ethyl hexanol.The copolymers are usefully admixed with lubricants in an amount of from 0.01 to 3 wt. % based on the total weight of the admixture.

Abstract: Olefin-dicarboxylic anhydride copolymers and their ester derivatives, having C.sub.18 to C.sub.50 linear alkyl side chains are filtration aids in solvent dewaxing of waxy lubricating oils.

Abstract: Copolymers of a 1,2 epoxy alkane and a cyclic carboxylate compound of the class consisting of dicarboxylic acid anhydrides, preferably maleic anhydride or a hydrocarbyl substituted succinic anhydride and a beta lactone, said copolymers having C.sub.10 to C.sub.50, preferably C.sub.20 to C.sub.40, linear, pendant hydrocarbon chains are flow improvers in residual and crude oils.