摘要 |
1. A linear basic polymer consisting of 90 to 10 mole % of units of the formula see diagramm : EP0071050,P10,F3 and from 10 to 90 mole % of units of the formula see diagramm : EP0071050,P10,F4 and having a Fikentscher K value of from 10 to 200 (measured in 0.5% strength aqueous sodium chloride solution at 25 degrees C). |