| abstract |
(57) [Summary] [Constitution] C2-C3 oxyalkylene group 110-30 0 mol of one or more selected from polyalkylene glycol monoester monomers (a) and acrylic acid monomers, unsaturated dicarboxylic acid monomers and allyl sulfonic acid monomers. A dispersion stabilizer for coal / water slurries, which contains a copolymer obtained by polymerizing a monomer (b) as an essential component. [Effect] Since it exhibits excellent dispersibility, it is possible to transport the slurry at a high concentration, and further, since it has excellent long-term stability, it is possible to improve the storability. |