Dispersions of polymeric oil additives
AssigneeDorf Ketal Energy Services LLC
InventorsMichael Feustel, Matthias Krull, Victor Goncharov
Life of this patent
Estimating the term…
Abstract
The invention provides dispersions comprising I) at least one oil-soluble polymer effective as a cold flow improver for mineral oils, II) at least one organic, water-immiscible solvent, III) a dispersant comprising, based on the total amount of dispersant, a) 10-90% by weight of a salt of an ethercarboxylic acid and b) 90-10% by weight of a nonionic surfactant, IV) water and V) at least one organic, water-miscible solvent.
Claims33
A dispersion consisting of an organic phase dispersed in an aqueous phase, in which
- a) the dispersed organic phase consists of at least one oil-soluble polymer effective as a cold flow improver for mineral oils as component I) and at least one organic, water-immiscible solvent as component II),
- b) the continuous aqueous phase consists of water as component IV) and at least one organic, water-miscible solvent as component V),
- wherein the dispersion further contains
- c) 0.5% to 12% by weight of a dispersant as component III), which, based on the total amount of dispersant, consists of
- i) 5-95% by weight of a salt of an ethercarboxylic acid and
- ii) 95-5% by weight of a nonionic surfactant having an HLB value measured according to Griffin of greater than 7;
- and
- iii) optionally, an anionic, catonic and/or zwitterionic coemulsifier (VI).
A process for producing a dispersion consisting of an organic phase dispersed in an aqueous phase, in which
- a) the dispersed organic phase consists of at least one oil-soluble polymer effective as a cold flow improver for mineral oils as component I) and at least one organic. water-immiscible solvent as component II),
- b) the continuous aqueous phase consists of water as component IV) and at least one organic. water-miscible solvent as component V), wherein the dispersion contains
- c) 0.5% to 12% by weight of a dispersant as component III), which. based on the total amount of dispersant, consists of
- i) 5-95% by weight of a salt of an ethercarboxylic acid and
- ii) 95-5% by weight of a nonionic surfactant having an HLB value measured according to Griffin of greater than 7;
- and
- iii) optionally, an anionic, cationic and/or zwitterionic coemulsifier (VI), the process comprising converting constituents I, II, III, IV, V, and VI to a dispersion by mixing with stirring at temperatures above 50° C.
A process for improving the cold flow properties of crude oil, heating oil, bunker oil, residue oil and mineral oil that contains at least one residue oil, comprising adding thereto a dispersion consisting of an organic phase dispersed in an aqueous phase, in which
- a) the dispersed organic phase consists of at least one oil-soluble polymer effective as a cold flow improver for mineral oils as component I) and at least one organic, water-immiscible solvent as component II),
- b) the continuous aqueous phase consists of water as component IV) and at least one organic, water-miscible solvent as component V),
- wherein the dispersion contains
- c) 0.5% to 12% by weight of a dispersant as component III), which, based on the total amount of dispersant, consists of
- i) 5-95% by weight of a salt of an ethercarboxylic acid and
- ii) 95-5% by weight of a nonionic surfactant having an HLB value measured according to Griffin of greater than 7, to a paraffinic mineral oil and products produced therefrom;
- and
- iii) optionally, an anionic, cationic and/or zwitterionic coemulsifier (VI).
Dependencies are inferred from the claim text.