COMPOSITION COMPRISING A NON-IONIC SURFACTANT AND AN IONIC POLYMER

Abstract The invention relates to compositions, preferably solid compositions, comprising a non-ionic surfactant and a water soluble or water swellable ionic polymer, methods for their preparation and their use. The non-ionic surfactant is R1-0-A-0-R2, wherein the residue -0-A-0- is derived from a polyalkylene glycol HO-A-OH that comprises 2-130 monomer units derived from ethylene glycol and 0-60 monomer units derived from propylene glycol; and R1 is selected from the group consisting of -H, -(C8-C20)-alkyl, -(C8-C20)-alkenyl, -(C=0)-(C8-C20)-alkyl and -(C=0)-(C8-C20)-alkenyl, and R2 is selected from the group consisting of -H, -(C1-C6)-alkyl, -benzyl, -(C=0)-(C8-C20)-alkyl and -(C=0)-(C8-C20)-alkenyl. The surfactant is from 0.05 to 2.0 wt. % of the composition. The polymer contains non-ionic, cationic or anionic monomers, and up to 50 ppm cross-linking monomers. The compositions are useful inter alia as flocculation auxiliaries for solid-liquid separation processes, for example in sludge dewatering/waste water purification and as retention aids or other additives in paper manufacture. CA 2852606 2020-04-01 L'invention porte sur des compositions, de préférence des compositions solides, comprenant un tensioactif non ionique et un polymère ionique, sur des procédés pour leur préparation et sur leur utilisation. Les compositions sont utiles entre autres comme auxiliaires de floculation pour des procédés de séparation solide-liquide, par exemple en déshydratation de boue/purification d'eau résiduaire et comme adjuvants de rétention ou autres additifs en fabrication de papier.