Processes for the fractionation of synthetic polymers and for the fractionation of polymers containing synthetic amino, soluble in water or dispersible in water by ultrafiltration, synthetic polymer containing amino, and, use of polymers

摘要

"PROCESSES FOR THE FRACTIONATION OF SYNTHETIC POLYMERS AND FOR THE FRACTIONATION OF POLYMERS CONTAINING SYNTHETIC AMINO, SOLUBLE IN WATER OR DISPERSIVES IN WATER BY ULTRAFILTRACTION, SYNTHETIC POLYMER CONTAINING AMINO, AND, USE OF POLYMERS". The invention relates to a method for fractioning synthetic water-soluble or dispersible polymers containing amino groups with a wide molar mass distribution, by means of ultrafiltration. The polymeric solution or dispersion that is to be fractionated is continuously fed into an ultrafiltration circuit, comprising at least one ultrafiltration unit, and the retentate, with a narrower molar mass distribution, and the permeate are continuously discharged in such a way that the ultrafiltration circuit is placed in a substantially steady state. The invention also relates to polymers that can be obtained according to the inventive method and their use.