Condensation products based on aldehyde and amine, and their use as fluidizers

摘要

Condensation products and their use as fluidizers for hydraulic binders such as cements, plasters and lime. More particularly, products capable of being obtained by condensation in aqueous medium of at least: - a compound (a) having available at least two amine functional groups, - an aldehyde (b), - an acid (c) containing at least one SH group, or a salt of such an acid, - an acid (d) containing at least one amine functional group or a salt of such an acid, - and optionally one or more compound(s) (e) capable of releasing one or more sulphonate ions.