Dispersant formulation for cleaning up oil spills

B - Operations – Transporting – 01 – F

Patent

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Details

B01F 17/10 (2006.01) B01F 17/00 (2006.01) B01F 17/34 (2006.01) C09K 3/32 (2006.01) E02B 15/04 (2006.01)

Patent

CA 2276035

A dispersant formulation and process for dispersing oil spills on water, which formulation contains: (a) a sorbitan monoester of a C10-C20 aliphatic monocarboxylic acid, (b) a polyoxyethylene adduct of a sorbitan monoester of a C10-C20 aliphatic monocarboxylic acid which has from 6 to 30 ethyleneoxide units per mole of ester, (c) an alkali metal salt of a dialkyl sulfosuccinate wherein the alkyl group is a branched chain radical containing 4 to 13 carbon atoms, (d) a polyoxyethylene adduct of a sorbitan triester of a C10-C20 aliphatic monocarboxylic acid having from 6 to 30 ethyleneoxide units per mole of triester or a polyoxyethylene adduct of a sorbitol hexaester of a C10-C20 aliphatic monocarboxylic acid having from 6 to 30 ethyleneoxide units per mole of hexaester, and (e) a solvent comprising at least one of a propylene glycol ether, ethylene glycol ether, water, alcohol, glycol and a paraffinic hydrocarbon.

L'invention porte sur une composition de produit dispersant et sur un procédé de dispersion des nappes de pétrole à la surface de l'eau. Ladite composition comporte: (a) un monoester de sorbitanne d'un acide monocarboxylique aliphatique C10-C20; (b) un produit d'addition polyoxyéthylénique d'un monoester de sorbitan d'un acide monocarboxylique aliphatique C10-C20 présentant de 6 à 30 unités d'éthylèneoxyde par mole d'ester; (c) un sel de métal alcalin de sulfosuccinate de dialkyle dans lequel le groupe alkyle est un radical à chaîne ramifiée contenant de 4 à 13 atomes de carbone; (d) un produit d'addition polyoxyéthylénique d'un triester de sorbitan d'un acide monocarboxylique aliphatique C10-C20 présentant de 6 à 30 unités d'éthylèneoxyde par mole d'hexaester; et (e) un solvant comprenant au moins un éther de polyéthylèneglycol, un éther d'éthylèneglycol, de l'eau, de l'alcool, du glycol et un hydrocarbure paraffinique.

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