In one embodiment, an alkylphenol copolymer is disclosed wherein the copolymer comprises at least one alkylphenol monomer and the alkylphenol copolymer exhibits the following: an oscillation displacement Θ of greater than 0 at a temperature of −5° C. in a first oscillation temperature sweep and an oscillation displacement Θ in a second oscillation temperature sweep within 25% of the oscillation displacement Θ in the first oscillation temperature sweep at a temperature of −5° C. In a further embodiment, a petroleum composition is disclosed wherein the composition comprises a petroleum source and a macromolecular compound wherein the macromolecular compound exhibits the following: an oscillation displacement Θ of greater than 0 at a temperature of −10° C. in a first oscillation temperature sweep, and an oscillation displacement Θ in a second oscillation temperature sweep within 25% of the oscillation displacement Θ in the first oscillation temperature sweep at a temperature of −10° C.

In one embodiment, an alkylphenol copolymer is disclosed wherein the copolymer comprises at least one alkylphenol monomer and the alkylphenol copolymer exhibits the following: an oscillation displacement Θ of greater than 0 at a temperature of −5° C. in a first oscillation temperature sweep and an oscillation displacement Θ in a second oscillation temperature sweep within 25% of the oscillation displacement Θ in the first oscillation temperature sweep at a temperature of −5° C. In a further embodiment, a petroleum composition is disclosed wherein the composition comprises a petroleum source and a macromolecular compound wherein the macromolecular compound exhibits the following: an oscillation displacement Θ of greater than 0 at a temperature of −10° C. in a first oscillation temperature sweep, and an oscillation displacement Θ in a second oscillation temperature sweep within 25% of the oscillation displacement Θ in the first oscillation temperature sweep at a temperature of −10° C.

This invention relates a wax inhibitor for hydrocarbon oils comprising an esterified copolymer having repeating structural units derived from an esterified ethylenically unsaturated dicarboxylic acid and α-olefins having at least 18 carbon atoms, whereof at least 3 mol-% of the α-olefins have 30 or more carbon atoms, and wherein the ethylenically unsaturated dicarboxylic acid has been esterified with a mixture of alcohols comprising i) 70 to 97 mol-% of a saturated fatty alcohol having 18 to 24 carbon atoms and ii) 3 to 30 mol-% of an unsaturated alcohol having 16 to 24 carbon atoms.

This invention relates a wax inhibitor for hydrocarbon oils comprising an esterified copolymer having repeating structural units derived from an esterified ethylenically unsaturated dicarboxylic acid and α-olefins having at least 18 carbon atoms, whereof at least 3 mol-% of the α-olefins have 30 or more carbon atoms, and wherein the ethylenically unsaturated dicarboxylic acid has been esterified with a mixture of alcohols comprising i) 70 to 97 mol-% of a saturated fatty alcohol having 18 to 24 carbon atoms and ii) 3 to 30 mol-% of an unsaturated alcohol having 16 to 24 carbon atoms.

This invention relates a wax inhibitor for hydrocarbon oils comprising an esterified copolymer having repeating structural units derived from an esterified ethylenically unsaturated dicarboxylic acid and α-olefins having at least 18 carbon atoms, whereof at least 3 mol-% of the α-olefins have 30 or more carbon atoms, and wherein the ethylenically unsaturated dicarboxylic acid has been esterified with a mixture of alcohols comprising i) 70 to 97 mol-% of a saturated fatty alcohol having 18 to 24 carbon atoms and ii) 3 to 30 mol-% of an unsaturated alcohol having 16 to 24 carbon atoms.

This invention relates a wax inhibitor for hydrocarbon oils comprising an esterified copolymer having repeating structural units derived from an esterified ethylenically unsaturated dicarboxylic acid and α-olefins having at least 18 carbon atoms, whereof at least 3 mol-% of the α-olefins have 30 or more carbon atoms, and wherein the ethylenically unsaturated dicarboxylic acid has been esterified with a mixture of alcohols comprising i) 70 to 97 mol-% of a saturated fatty alcohol having 18 to 24 carbon atoms and ii) 3 to 30 mol-% of an unsaturated alcohol having 16 to 24 carbon atoms.

Methods of reducing drag in a flowing hydrocarbon include introducing to the flowing hydrocarbon an amount of a solid drag reducing additive effective to improve the flow, the solid drag reducing additive including a polymer particle prepared from at least one polar monomer and a percent by weight (wt %) of liquid of 50 wt % or less. Methods also include producing a solid drag reducing additive that includes forming a polymer from at least one polar monomer by emulsion polymerization; and disrupting the emulsion by adding at least one demulsifier and at least one anti-blocking agent to form the solid drag reducing additive. Compositions include a solid drag reducing additive comprising a polymer prepared from at least one polar monomer and having an average particle size in a range of about 100 μm to about 500 μm, wherein the solid drag reducing additive comprises less than 50 wt % of liquid.

Methods of reducing drag in a flowing hydrocarbon include introducing to the flowing hydrocarbon an amount of a solid drag reducing additive effective to improve the flow, the solid drag reducing additive including a polymer particle prepared from at least one polar monomer and a percent by weight (wt %) of liquid of 50 wt % or less. Methods also include producing a solid drag reducing additive that includes forming a polymer from at least one polar monomer by emulsion polymerization; and disrupting the emulsion by adding at least one demulsifier and at least one anti-blocking agent to form the solid drag reducing additive. Compositions include a solid drag reducing additive comprising a polymer prepared from at least one polar monomer and having an average particle size in a range of about 100 μm to about 500 μm, wherein the solid drag reducing additive comprises less than 50 wt % of liquid.

The invention relates to agents reducing the hydrodynamic drag of a turbulent flow of petroleum products in the process of transportation in pipelines. The technical result of the solution involves the preservation of the polymer structure so that the polymer is more effective in reducing the hydrodynamic drag, grinding costs in the production of the DRA, the aggregation of the DRA while reducing the amount of the separating agent and the need to inject a smaller amount of the reagent to reduce the hydrodynamic drag. The specified technical result is produced due to the development of a reagent for reducing the hydrodynamic drag of hydrocarbon liquids in pipelines, which consists of the first and the second component, in which case the first component comprises the particles of polyalphaolefin or polyacrylate, the second component is an anti-agglomerating agent.

The invention relates to agents reducing the hydrodynamic drag of a turbulent flow of petroleum products in the process of transportation in pipelines. The technical result of the solution involves the preservation of the polymer structure so that the polymer is more effective in reducing the hydrodynamic drag, grinding costs in the production of the DRA, the aggregation of the DRA while reducing the amount of the separating agent and the need to inject a smaller amount of the reagent to reduce the hydrodynamic drag. The specified technical result is produced due to the development of a reagent for reducing the hydrodynamic drag of hydrocarbon liquids in pipelines, which consists of the first and the second component, in which case the first component comprises the particles of polyalphaolefin or polyacrylate, the second component is an anti-agglomerating agent.