| abstract |
The invention relates to a composition for building materials containing a) a hydraulic construction agent, b) a chipboard, c) a suitable copolymer as a flow agent and d) an adsorption blocker, wherein the adsorption blocker has as its basic component a structural unit DEA obtained from the reaction of the individual components D, E and A, wherein E is represented by a compound having at least two reactive isocyanate groups, D is represented by a hydrophobic compound with at least one isocyanate reactive group, A is represented by a hydrophilic compound with at least one isocyanate reactive group. |