Patent ID: 7612157

Claim:
A composition intended to be applied to the surfaces of freshly placed or freshly demolded mortars and/or concretes, before the beginning of setting, in order to prevent the evaporation of the water necessary for their setting and for their hardening and to create, on said surfaces, high adhesiveness of the finishing materials, which composition is provided in the form of an aqueous emulsion comprising: a) from 5% to 60% by weight of at least one paraffin wax of petroleum or synthetic origin including, as a mixture, saturated and unsaturated aliphatic hydrocarbons of general formulae C n H 2n+2 and C n H 2n for which n is at least equal to 30 and for which the melting point is between 40° C. and 75° C.; b) from 8% to 40% by weight of at least one hydrocarbon compound which is a linear or cyclic hydrocarbon oil of aliphatic or naphthenic origin, alone or as a mixture, of general formulae C n H 2n+2 and C n H 2n for which n is less than 30; c) from 10% to 50% by weight of at least one ester-containing oil formed of at least one ester resulting from the condensation reaction of a saturated or unsaturated fatty acid with a mono-, di- or trihydric alcohol; d) from 15% to 35% by weight of solids content of at least one latex formed of a colloidal aqueous emulsion of at least one polymer; e) from 0.02% to 5% by weight of at least one pulverulent filler of inorganic or organic origin; f) and of water in a quantity sufficient for 100%.