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US 2024/0352371 A1Published application
Aqueous dispersions of paraffin inhibitors
AssigneeBASF SE
InventorsFrank PIRRUNG, Rainer PACKE-WIRTH, Oscar LAFUENTE CERDA, Serge IKINK, Jan DONATH
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Abstract
Aqueous dispersion of paraffine inhibitors, comprising a continuous aqueous phase comprising water and a water-miscible organic solvent, a dispersed phase comprising at least one paraffin inhibitor component, and at least one anionic surfactant, methods of manufacturing such aqueous dispersions, and the use of such aqueous dispersions as paraffin inhibitor or pour point depressant for crude oil or other hydrocarbon fluids, such as fuel oils or diesel.
Claims21
-46. (canceled)
An aqueous dispersion comprising at least
- (A) a continuous aqueous phase comprising water and a water-miscible organic solvent,
- (B) a dispersed phase comprising at least one paraffin inhibitor component having a melting point of not more than 100° C., wherein the amount of the paraffin inhibitor component is from 10% to 60% by weight relating to the total of all components of the aqueous dispersion, and the paraffin inhibitor component comprises at least
- 30% to 100% by weight—relating to the total of the paraffin inhibitor component—of at least one polymeric, oil-soluble paraffin inhibitor (X),
- 0% to 70% by weight—relating to the total of the paraffin inhibitor component—of a hydrocarbon or a hydrocarbon mixture having a boiling point of at least 100° C., and
- (C) at least one surfactant (S),
- wherein
- the surfactant (S) is anionic and comprises at least one anionic group selected from sulfonate, sulfate, phosphonate or phosphate groups,
- the amount of the surfactants (S) is from 1% to 7% by weight relating to the paraffin inhibitor component, and
- the D50 particle size (volume size distribution) of the dispersed phase, measured by dynamic light scattering is from 50 nm to 500 nm.
6 more elements
Dependencies are inferred from the claim text.