WATER SOLUBLE OR WATER DISPERSIBLE DISPERSING AGENT FOR CEMENT COMPOSITIONS AND MINERAL PARTICLE AQUEOUS SUSPENSION, AND ADDITIVES CONTAINING SUCH DISPERSING AGENT

摘要

The invention concerns a water soluble or water dispersible dispersing agent for cement composition and mineral particle aqueous suspensions, containing carboxylic functions, optionally partially or totally salified and polyether chains It is obtained by partial esterification catalysed by introducing a base, and reacting: at least a polycarboxylic acid obtained by polymerising at least an unsaturated carboxylic acid, containing on average at least 6 carboxylic functions per molecule; and at least a polyether containing a free hydroxyl group capable of reacting with one carboxylic function of said polycarboxylic acid.