Dai-ichi Kogyo Seiyaku Co., Ltd.

Shuichi Honjo

Akihiro Naka

Yasumasa Hamuro

Kaoru Aoike

Mixture of a fuel oil and pulverized coal are stabilized by the addition of a small amount of a polyether-type adduct having a molecular weight of from 6,000 to 600,000 between a lower alkylene oxide and a poly(lower alkyleneimine) compound, or a derivative of said adduct.

Stabilized coal-oil mixture

A fuel slurry comprising a mixture of a fuel oil and pulverized coal may be effectively stabilized with a small amount of adducts of alkylene oxide and an alcohol, an amine, a carboxylic acid or a phenol, or inorganic acid esters of said adducts; or cross-linked products of said adducts or said inorganic acid esters.

Stabilized fuel slurry

A fuel slurry comprising a mixture of a fuel oil and pulverized coal may be effectively stabilized with a small amount of a condensation product of a sulfonated benzene or naphthalene derivative-formaldehyde, ligninsulfonic acid, carboxymethylcellulose, carboxymethyl-starch or a salt thereof.

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Kyoto, Japan

Shuichi Honjo