Maleic anhydride copolymer with broadly dispersed ester side chain as wax inhibitor and wax crystallization enhancer
AssigneeBl Technologies, Inc.
InventorsXiaoan Xie, Wenqing Peng, Hitesh Ghanshyam Bagaria, Nimeshkumar Kantilal Patel
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Abstract
A wax inhibitor composition, the composition having at least one alpha-olefin maleic anhydride copolymer of the formula: wherein R1 is selected from hydrocarbyl groups containing 10-30 carbon atoms, and R2 is selected from a hydrogen or hydrocarbyl groups containing 10-80 carbon atoms, and R2, if not hydrogen, is broadly dispersed, wherein R2 comprises a weight fraction of carbon numbers greater than 30, wherein R2 can be the same or different, and n is a number of repeating units ranging from 1 to 100.
Claims30
A wax inhibitor composition, the composition comprising:
- at least one alpha-olefin maleic anhydride copolymer of the formula
- wherein R1 is selected from hydrocarbyl groups containing 10-30 carbon atoms, and R2 is selected from a hydrogen or hydrocarbyl groups containing 10-80 carbon atoms, and R2, if not hydrogen, is broadly dispersed, wherein R2 comprises a weight fraction of carbon numbers greater than 30, wherein R2 can be the same or different, and n is a number of repeating units ranging from 1 to 100.
(canceled)
8-9. (canceled)
A comb polymer composition, the composition comprising:
- at least one alpha olefin maleic anhydride copolymer of the formula:
- wherein R3 is selected from hydrocarbyl groups containing 10-40 carbon atoms, and R4 is selected from a hydrogen or hydrocarbyl groups containing 10-80 carbon atoms, and R4, if not hydrogen, is broadly dispersed, wherein R4 comprises a weight fraction of carbon numbers greater than 30, R5 is selected from a hydrogen or hydrocarbyl groups containing 10-80 carbon atoms, and R5, if not hydrogen, is broadly dispersed, wherein R5 comprises a weight fraction of carbon numbers greater than 30, wherein R4 and R5 are the same or different, and n is a number of repeating units ranging from 1 to 100.
17-18. (canceled)
A method of reducing wax deposition from an oil, the method comprising:
- adding to the oil an effective amount of a wax inhibitor composition comprising at least one alpha olefin maleic anhydride copolymer,
- wherein the at least one alpha olefin maleic anhydride copolymer is prepared by reacting an alpha-olefin containing greater than 10 carbon atoms with maleic anhydride in the presence of a free radical initiator to obtain a high molecular weight copolymer, followed by reacting the high molecular weight copolymer with an alcohol mixture having a dispersed chain length ranging from 10 to 80 carbon atoms.
Dependencies are inferred from the claim text.