NON-TOXIC STABILIZING AGENT FOR AQUEOUS SUSPENSIONS OF SODIUM SILICO ALUMINATES

摘要

P Stabilizing copolymers of aqueous suspensions of sodium silico-aluminates or zeolites which are characterized in that they consist of: BR/ a) at least one non-crosslinking acrylic monomer having a selected carboxylic function among acrylic and methacrylic acids, BR/ b) optionally, at least one non-crosslinking acrylic monomer chosen from esters, amides and / or nitriles of acrylic and / or methacrylic acids, BR/ c) at least one crosslinking monomer having at least two acrylic and / or allylic and / or vinyl double bonds, BR/ d) optionally, at least one at least one bifunctional crosslinking monomer comprising at most one double bond and at least one another chemical function reactive with respect to the other monomers with acid, amide or nitrile functional groups of steps (a) and (b). These copolymers are used at a rate of not more than 0.4% by weight of dry matter relative to the total mass of the medium to be treated. / P