Aqueous external crystal modifier dispersion
AssigneeBaker Hughes Incorporated
InventorsDavid J. Poelker, Timothy J. Baker, Jeffrey W. Germer
Life of this patent
Estimating the term…
Abstract
An aqueous external dispersion comprising a wax dispersant and an organic crystal modifier composition dispersed through a continuous water phase is useful as a crystal modifier for petroleum or a petroleum-derived liquid. The dispersant comprises a non-ionic surfactant and is present in the dispersion in an amount sufficient to impart at least meta-stability to the dispersion. The dispersion has a viscosity at 25.degree. C. of less than about 50,000 centipoise.
Claims36
An aqueous external dispersion useful as a crystal modifier for petroleum or a petroleum-derived liquid, comprising a wax dispersant and an organic crystal modifier composition dispersed through a continuous water phase, the crystal modifier composition comprising a crystal modifier or combination of crystal modifiers and the crystal modifier or combination of crystal modifiers makes up about 10% by weight to about 70% by weight of the dispersion, the wax dispersant being present in the dispersion in an amount sufficient to impart at least meta-stability to the dispersion, and the dispersion having a viscosity at 25.degree. C. of less than about 50,000 centipoise.
A method for preparation of an aqueous external dispersion useful as a crystal modifier for petroleum or a petroleum-derived liquid, comprising:
- combining and heating a wax dispersant and an organic crystal modifier composition to form an organic phase, the dispersant comprising a non-ionic surfactant, to form a liquid organic phase;
- and then
- adding the liquid organic phase to water at a rate of addition and with sufficient agitation and with the water at a temperature to disperse the organic phase throughout the water in an organic phase weight average particle size of less than about 10 microns;
- thereby to produce a dispersion comprising the dispersant and the organic crystal modifier composition dispersed through a continuous water phase, the crystal modifier composition comprising a crystal modifier or combination crystal modifiers and the crystal modifier or combination of crystal modifiers makes up about 10% by weight to about 70% by weight of the dispersion, the dispersion containing at least 25% by weight water and having a viscosity at 25.degree. C. of less than about 50,000 centipoise.
Dependencies are inferred from the claim text.