Patent ID: 9624401
Date: 2017-04-18
CPC Classifications: C08G,C08K,C09D,C14C

Claim:
1. A process for producing an aqueous polyurethane preparation, which comprises B) partially neutralizing with at least one neutralizing agent an at least one polymeric polyurethane bearing ionizable groups present in a solution comprising at least one solvent, such that from 1 to 60 mol % of the ionizable groups present in the polymeric polyurethane are neutralized, C) dispersing the partially neutralized at least one polymeric polyurethane bearing ionizable groups in water, D) optionally removing the at least one solvent, E) optionally diluting the dispersion after solvent removal, whether or not carried out, with further water, F) admixing further neutralizing agent after solvent removal, whether or not carried out, to the dispersion to neutralize additional ionizable groups.