Abstract: A composition useful for scavenging hydrogen sulfide by admixing metal carboxylates which have high viscosity due to polymerization and a viscosity improver selected from the group consisting of glycol ethers having from about 4 to about 10 carbons, alkyl alcohols having from about 1 to about 10 carbons, and combinations thereof.

Abstract: Haze may be removed from a biofuel or biofuel intermediate by using a clarifier. The clarifier includes copolymer prepared using a formulation comprising an alpha olefin and maleic anhydride. The clarifier may also be used with admixtures of biofuels, biofuel intermediates, or biofuel feedstocks with conventional hydrocarbons.

Abstract: A composition useful for scavenging hydrogen sulfide by admixing metal carboxylates which have high viscosity due to polymerization and a viscosity improver selected from the group consisting of glycol ethers having from about 4 to about 10 carbons and alkyl alcohols having from about 1 to about 4 carbons.

Abstract: An effective hydrogen sulfide scavenger that produces little corrosion may be prepared by reacting glyoxal with a compound having at least two primary or secondary amine groups. The subject hydrogen sulfide scavengers may be used with both the production of crude oil and natural gas, and the refining of same.

Abstract: Haze may be removed from a biofuel or biofuel intermediate by using a clarifier. The clarifier includes copolymer prepared using a formulation comprising an alpha olefin and maleic anhydride. The clarifier may also be used with admixtures of biofuels, biofuel intermediates, or biofuel feedstocks with conventional hydrocarbons.

Abstract: Haze may be removed from a biofuel or biofuel intermediate by using a clarifier. The clarifier includes copolymer prepared using a formulation comprising an alpha olefin and maleic anhydride. The clarifier may also be used with admixtures of biofuels, biofuel intermediates, or biofuel feedstocks with conventional hydrocarbons.

Abstract: A composition useful for scavenging hydrogen sulfide by admixing metal carboxylates which have high viscosity due to polymerization and a viscosity improver selected from the group consisting of glycol ethers having from about 4 to about 10 carbons and alkyl alcohols having from about 1 to about 4 carbons.

Abstract: The cold flow of middle distillate fuels may be improved by adding an effective improving amount of one or more alpha-olefin compositions. The compositions include, but are not necessarily limited to, polymers of alpha-olefins per se, copolymerized or grafted alpha-olefins with maleic anhydride, acrylic acid, vinyl acetate, alkyl acrylates, methacrylic acid, and/or alkyl methacrylates. These resulting copolymers or grafted polymers may be blended with alkylphenol-formaldehyde resins, which in turn may be blended with ethylene-vinyl acetate (EVA) copolymer. In a non-limiting example, the cold filter plugging point (CFPP) may be synergistically improved as compared with the expected additive effect of using the components separately.

Abstract: Compounds having the formulae and general formulae: wherein each R1, R2, R3 and R4 are the same or different and may be hydrogen, an alkyl group, an aryl group, a halogen, a nitro group, an alkyl or aryl ester, and an alkyl or aryl ether; compounds having the general formula: wherein R is an alkyl, aryl or electron withdrawing group; mixtures thereof; can be used as additives for crude oil and hydrocarbons. These compounds may be used to scavenge mercaptans, sulfides, cyanides, and primary or secondary amines; either alone or in combination.

Abstract: An effective hydrogen sulfide scavenger that produces little corrosion may be prepared by reacting glyoxal with a compound having at least two primary or secondary amine groups. The subject hydrogen sulfide scavengers may be used with both the production of crude oil and natural gas, and the refining of same.

Abstract: Certain branched carboxylic acids may serve as improved lubricity additive compositions in distillate fuels, and in particular for cold weather applications. Suitable branched carboxylic acids may include, but are not necessarily limited to, isostearic acid, neodecanoic acid, isononanoic acid, neononanoic acid, neoundecanoic acid, isovaleric acid, pivalic acid, and the like and mixtures thereof. The branched carboxylic acids may be used alone or together with straight chain carboxylic acids, and optionally with an aromatic solvent.

Abstract: A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with relatively high molecular weight acid ammonium salts of an imide of polymaleic anhydride. The salts may be unneutralized or partially neutralized. The invention is particularly relevant to hydraulic fracturing fluids used in enhanced oil recovery. The compositions herein are made in the presence of a reactive solvent, such as a polyalkylene glycol, e.g. polyethylene glycol. The compositions of this invention are more environmentally friendly than some current technology.

Abstract: Disclosed is composition useful for reducing the concentration of mercaptans in hydrocarbons comprising: (A) a first diazo component and (B) a second component comprising a nucleophilic acceptor. The composition can be added to hydrocarbons such as fuel oil to reduce mercaptans without increasing turbidity or color. Triethylene diamine and 1,2-epoxyhexadecane are disclosed to be exemplary diazo and nucleophilic acceptor components.

Abstract: Haze may be removed from a biofuel or biofuel intermediate by using a clarifier. The clarifier includes copolymer prepared using a formulation comprising an alpha olefin and maleic anhydride. The clarifier may also be used with admixtures of biofuels, biofuel intermediates, or biofuel feedstocks with conventional hydrocarbons.

Abstract: A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with a polyamine salt of an imide of polymaleic anhydride. The salt may be unneutralized or partially neutralized. The invention is particularly relevant to hydraulic fracturing fluids used in enhanced oil recovery. The compositions of this invention are more environmentally friendly than some current technology.

Abstract: Compounds having the formulae and general formulae: wherein each R1, R2, R3 and R4 are the same or different and may be hydrogen, an alkyl group, an aryl group, a halogen, a nitro group, an alkyl or aryl ester, and an alkyl or aryl ether; compounds having the general formula: wherein R is an alkyl, aryl or electron withdrawing group; mixtures thereof; can be used as additives for crude oil and hydrocarbons. These compounds may be used to scavenge mercaptans, sulfides, cyanides, and primary or secondary amines; either alone or in combination.

Abstract: Certain branched carboxylic acids may serve as improved lubricity additive compositions in distillate fuels, and in particular for cold weather applications. Suitable branched carboxylic acids may include, but are not necessarily limited to, isostearic acid, neodecanoic acid, isononanoic acid, neononanoic acid, neoundecanoic acid, isovaleric acid, pivalic acid, and the like and mixtures thereof. The branched carboxylic acids may be used alone or together with straight chain carboxylic acids, and optionally with an aromatic solvent.

Abstract: A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with relatively high molecular weight acid ammonium salts of an imide of polymaleic anhydride. The salts may be unneutralized or partially neutralized. The invention is particularly relevant to hydraulic fracturing fluids used in enhanced oil recovery. The compositions herein are made in the presence of a reactive solvent, such as a polyalkylene glycol, e.g. polyethylene glycol. The compositions of this invention are more environmentally friendly than some current technology.

Abstract: A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with a polyamine salt of an imide of polymaleic anhydride. The salt may be unneutralized or partially neutralized. The invention is particularly relevant to hydraulic fracturing fluids used in enhanced oil recovery. The compositions of this invention are more environmentally friendly than some current technology.

Abstract: A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with relatively high molecular weight polyamine salts of an imide of polymaleic anhydride. The salts may be unneutralized or partially neutralized. The invention is particularly relevant to hydraulic fracturing fluids used in enhanced oil recovery. The compositions herein are made in the presence of a reactive solvent, such as a polyalkylene glycol, e.g. polyethylene glycol. The compositions of this invention are more environmentally friendly than some current technology.