PROCESS FOR THE PRODUCTION OF POLYURETHANE-COATED TEXTILES SURFACES, POLYURETHANE-COATED TEXTILES SURFACES AND THEIR USE IN THE PRODUCTION OF BREATHABLE ANDWATERPROOF CLOTHING

摘要

AbstractThe present invention relates to a process for the productionof textiles that are coated with polyurethane, in which thematerial that is to be coated is coated with two oppositelycharged aqueous ionic dispersions of polyurethanes that contain nofree isocyanate groups and contain covalently bonded,solubility-enhancing ionic groups, dried and optionallywaterproofed. Cationic and anionic polyurethane dispersions arepreferred in a weight ratio of 1:1, and are applied to the textilematerial in a two-coat technique, wet-on-wet. In addition, theinvention relates to textile material produced in this way, withimproved waterproof qualities and the use of such textiles for theproduction of breathable, water- and wind resistant clothing,industrial textiles, and leather substitutes, all of which arepermeable to water vapour.