Si Group, Inc.

Joseph T Doane

Elliott West Shanklin

Kelly S Chichak

Brian Christofel

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.

Thermally stable macromolecular compound and petroleum composition including the same

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 &#x398; of greater than 0 at a temperature of &#x2212;5&#xb0; C. in a first oscillation temperature sweep and an oscillation displacement &#x398; in a second oscillation temperature sweep within 25% of the oscillation displacement &#x398; in the first oscillation temperature sweep at a temperature of &#x2212;5&#xb0; 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 &#x398; of greater than 0 at a temperature of &#x2212;10&#xb0; C. in a first oscillation temperature sweep, and an oscillation displacement &#x398; in a second oscillation temperature sweep within 25% of the oscillation displacement &#x398; in the first oscillation temperature sweep at a temperature of &#x2212;10&#xb0; C.

An alkylphenol copolymer, such as for use in a petroleum composition, is provided. The alkylphenol copolymer has the following repeating units (A) and (B): wherein,

Alkylphenol copolymer

An asphaltene dispersant composition is provided. The composition may contain an alkylphenol copolymer having the following repeating units (A) and (B): wherein,

Asphaltene dispersant composition

A paraffin inhibitor composition that exhibits stable properties at low temperature is provided. The composition may contain, for instance, an alkylphenol copolymer having the following repeating units (A) and (B): wherein,

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Rotterdam Junction, NY, United States of America

Joseph T Doane