abstract |
The invention relates to novel microporous coatings based on polyurethane polyurea, and to a process for the production of micrporous coations, in which a composition comprising an aqueous, anionically hydrophilised polyurethane dispersion (I) and a cationic coagulant (II) containing a cationically hydrophilised polyurethane polyurea dispersion is foamed and dried. |