Coal-water dispersion agent

Details Coal-water dispersion agent Coal-water dispersion agent

1984-03-19

1990-09-18

Gray, Bruce D.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

2523115, 252354, 252356, 260404, C10L 132

Patent

active

049575112

ABSTRACT:
A dispersing agent for solid particles in water, which is a tall oil pitch partially esterified with a polyalkylene glycol mainly composed of ethylene oxide units of a molecular weight of above 600 or a monoester or monoether thereof and optionally also aminated having a residual acid value higher than 3, and a process for preparing said dispersing agent which comprises heating the two reactants at 200.degree.-285.degree. C. for so long that the maximum acid value of the reaction mixture at this temperature is reduced at least 2 units. The dispersing agent can be used to disperse coal particles in water.

REFERENCES:
patent: 3617095 (1971-11-01), Lissant
patent: 3632822 (1972-01-01), Conroy
patent: 4360615 (1982-11-01), Wang et al.

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