| 摘要 |
Water-soluble polyamines which (a) have an average molecular weight of above 1,000 (b) contain at least one grouping of the formula -R-Z in which Z denotes a -COOH or -SO3H group and R represents an alkylene radical, possessing 1 to 7 C atoms, which is optionally substituted and/or interrupted by a carbonamido group, BONDED TO A BASIC NITROGEN ATOM, AND WHICH (C) ARE OBTAINABLE EITHER BY REACTION OF WATER-SOLUBLE LOW MOLECULAR POLYAMINES WITH COMPOUNDS WHICH INTRODUCE ACID GROUPS AND WITH COMPOUNDS WHICH ARE POLYFUNCTIONAL TOWARDS AMINO GROUPS, OR BY REACTION OF WATER-SOLUBLE HIGHER-MOLECULAR POLYAMINES, HAVING AN AMINE EQUIVALENT OF 43 TO 700, IN WHICH A HYDROGEN ATOM IS BONDED TO AT LEAST EVERY TWENTIETH BASIC NITROGEN ATOM, WITH COMPOUNDS WHICH INTRODUCE ACID GROUPS AND OPTIONALLY WITH COMPOUNDS WHICH ARE POLYFUNCTIONAL TOWARDS AMINO GROUPS; A PROCESS FOR THEIR MANUFACTURE AND THEIR USE AS AGENTS FOR INCREASING THE RETENTION OF FIBRES, FILLERS AND PIGMENTS IN THE MANUFACTURE OF PAPER AND FOR WORKING-UP PAPERMAKING MACHINE EFFLUENTS BY FILTRATION, SEDIMENTATION AND FLOTATION. |
