Emulsion concentrate for demoulding of hydraulic binders, demoulding emulsion and its use.

摘要

A concentrate for the prepn. of mould release compsns. for articles moulded from hydraulic binders is composed of : 60-90% of an oily constituent; 0.1-40% of a fatty component; 2-10% of solvent; and 0.5-5% of a non-ionic hydrophilic surfactant (A) with a lipophilic/hydrophilic (HLB) balance ≥ to 13, and 5-19% of a non-ionic hydrophilic surfactant (B) with an HLB < 13. Also claimed are emulsions prepd. from the concentrate and their use as mould release compsns.