WERKWIJZE TER BEREIDING VAN IN WATER DISPERGEERBARE POLYURETHANEN MET EEN IN HOOFDZAAK LINEAIRE MOLECUULSTRUCTUUR.

摘要

The present invention relates to water-dispersible polyurethane elastomers having a substantially linear molecular structure, characterized by (A) LATERAL POLYALKYLENE OXIDE POLYETHER CHAINS HAVING A CONTENT OF ETHYLENE OXIDE UNITS OF FROM ABOUT 0.5 TO 10% BY WEIGHT, BASED ON THE POLYURETHANE AS A WHOLE AND (B) A CONTENT OF =N(+)=, -COO(-) or -SO3(-) groups of from about 0.1 to 15 milliequivalents per 100 g, TO AQUEOUS DISPERSIONS OF THESE WATER-DISPERSIBLE POLYURETHANE ELASTOMERS AND TO PROCESSES FOR PRODUCING THESE WATER-DISPERSIBLE POLYURETHANE ELASTOMERS.