Birch, Stewart, Kolasch and Birch
Dispersing agents for an aqueous slurry of coal powder
 Aqueous dispersions of coal powder having good flowability properties are provided by employing, as the dispersing agent, an anionic surface active agent having the formula: EQU [R--O--CH.sub.2 CH.sub.2 O--.sub.m SO.sub.3 ].sub.n M wherein R is an alkyl or alkenyl group having 6 to 22 carbon atoms or an alkyl- or alkenyl-substituted aryl group having 4 to 22 carbon atoms in the substituent thereof, m is an integer of from 2 to 50, n is a number of from 1 to 3 and is the same as the valence of the counter ion M, and M is a cation having a valence of from 1 to 3. 
Kao Soap Company, Limited
C
C10L
inventional
Shinichi Masaaki Noboru
Watanabe Yamamura Moriyama