WATER DISPERSIONS FOR TREATING MOISTURE-ABSORBING MATERIALS TO PROTECT THEM FROM CONTAMINATION

摘要

The invention concerns aqueous dispersions containing the following components: (A) low-molecular organosilicon compounds selected from: (A1) C1 to C20 hydrocarbon C1-C6 alkoxysilanes; and (A2) organosiloxanes containing C1 to C6 alkoxy groups and C1 to C20 hydrocarbon groups and optionally hydroxyl groups, the C1 to C20 hydrocarbon groups in (A1) and (A2) optionally comprising basic nitrogen or halogen atoms; (B) film-forming organic polymers; and optionally (C) compounds which reduce the colour adhesion and/or improve the permeability to water vapour of the coating, said compounds being selected from high-molecular organopolysiloxanes and fluoro-organic compounds.