Ester containing fuel composition
AssigneeBASF Wyandotte Corporation
InventorsIrving R. Schmolka, Joseph H. Y. Niu
Life of this patent
Estimating the term…
Abstract
Unwanted settling in a composition comprising a suspension of fine particles of coal in fuel oil is eliminated or substantially reduced by adding an effective amount of a fatty acid ester of a polyoxypropylene-polyoxyethylene copolymer. The fatty acid has about 12 to 22 carbon atoms in the acyl group. The polyoxyethylene groups and polyoxypropylene groups have a total molecular weight of about 500 to 2000 and contain 0 to about 60 percent by weight polyoxyethylene groups.
Claims11
A combustible fuel slurry comprising solid particulate carbonaceous material, liquid hydrocarbon fuel, and a minor slurry suspension stabilizing amount of a fatty acid ester of a polyoxyalkylene polymer wherein said fatty acid has about 12 to 22 carbon atoms in the acyl group, the polyoxyalkylene groups have a total molecular weight of about 500 to 2000 and said polyoxyalkylene polymer is selected from the group consisting of polyoxypropylene polymers and polyoxyethylene-polyoxypropylene copolymers containing up to about 60 percent by weight polyoxyethylene groups.
Dependencies are inferred from the claim text.