C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
44/10
C10L 1/32 (2006.01)
Patent
CA 1192401
Inventors: Bertil Valdemar Hansen Sten Sture Kelfve Henri Rene Mollberg Title: Compositions comprising coal, water and polyelectrolyte Abstract of the This invention relates to compositions substantially disclosure: containing pulverized coal, water, polyelectrolyte and, optionally, a stabilizing agent. The polyelectro- lyte is a water soluble polyethylene, optionally containing double bonds and/or branching points in the polymer chain, being directly substituted with a) hydroxysulfonyloxy groups b) sulfo groups, c) hydroxysulfonyloxy-lower alkyl groups or d) sulfo- lower alkyl groups, which are partly or completely in salt form and optionally e) substituents selected from hydroxy, lower alkyl, lower alkanoyloxy, carba- moyl, cyano, hydroxymethyl, chloro and phenyl, whereby the polyelectrolyte contains at most four different kinds of said optional substituents, and wherein the amount of sulfur of the polyelectrolyte is 2 to 25 percent by weight being calculated when the acid forming groups are present as free acids. Small amounts of these polyelectrolytes in water with a high percentage of pulverized coal form compositions, characterized by low viscosity, good flowability, pumpability and stability.
412144
Hansen Bertil V.
Kelfve Sten S.
Mollberg Henri R.
Ab Carbogel
Macrae & Co.
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