Dispersions Of Polymeric Oil Additives
AssigneeClariant International Ltd.
InventorsMichael FEUSTEL, Matthias KRULL, Victor GONCHAROV
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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.
Claims34
A dispersion comprising an organic phase dispersed in an aqueous phase, in which
- a) the dispersed organic phase comprises 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 comprises 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, comprises
- 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.
A process for producing a dispersion comprising an organic phase dispersed in an aqueous phase, in which
- a) the dispersed organic phase comprises 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 comprises 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, comprises
- 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,
- by converting constituents I, II, III, IV and V to a dispersion by mixing with stirring at temperatures above 50° C.
(canceled)
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, by adding a dispersion comprising an organic phase dispersed in an aqueous phase, in which
- a) the dispersed organic phase comprises 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 comprises 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, comprises
- 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.
Dependencies are inferred from the claim text.