Coal-oil slurries containing a surfactant

Details Coal-oil slurries containing a surfactant Coal-oil slurries containing a surfactant

1981-11-02

1987-01-20

Dixon, Jr., William R.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 72, 252357, C10L 132

Patent

active

046378227

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 polyoxypropylene-polyoxyethylene copolymer which corresponds to the formula: ##STR1## in which the values of X.sub.1, X.sub.2, X.sub.3 and X.sub.4 may be the same or different, Y.sub.1, Y.sub.2, Y.sub.3 and Y.sub.4 may be the same or different, Y.sub.1 +Y.sub.2 +Y.sub.3 +Y.sub.4 give a total oxyethylene content of the molecule of from about 10 to 80 weight percent and X.sub.1, X.sub.2, X.sub.3 and X.sub.4 have values such that the total molecular weight of the molecule is from about 1500 to 30,000.

REFERENCES:
patent: 3036130 (1962-05-01), Jackson et al.
patent: 3092475 (1963-06-01), Cole et al.
patent: 3210168 (1965-10-01), Morway
patent: 4276054 (1981-06-01), Schmolka et al.
patent: 4288232 (1981-09-01), Schmolka et al.
McCutcheon's Detergents & Emulsifiers, 1973, North American Ed., Allured Publising Corp., Ridgewood, New Jersey, pp. 175 & 176, 1973.
Kirk-Othmer Encyclopedia of Chemical Technology, Standen, New York, vol. 19, pp. 560-561, 2nd ed.

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