Incorporating a crosslinked polyamidoamine condensation product into paper-making pulp

摘要

Crosslinked water-soluble reaction products for the papermaking industry obtained by reacting (A) 1 PART BY WEIGHT OF A POLYAMIDOAMINE OBTAINED BY CONDENSATION OF 1 MOLE OF A DICARBOXYLIC ACID WITH FROM 0.8 TO 1.4 MOLES OF A POLYALKYLENEPOLYAMINE SUCH AS DIETHYLENETRIAMINE, UP TO 8 ETHYLENEIMINE UNITS PER BASIC NITROGEN ATOM BEING OPTIONALLY GRAFTED ONTO THE CONDENSATION PRODUCT, WITH (B) FROM 0.3 TO 2 PARTS BY WEIGHT OF A REACTION PRODUCT OF A POLYALKYLENE OXIDE HAVING FROM 8 TO 100 ALKYLENE OXIDE UNITS WITH EPICHLOROHYDRIN, IN AQUEOUS SOLUTION AT A TEMPERATURE OF FROM 20 DEG TO 100 DEG C., the solution having a solids content of from 5 to 50% by weight. The viscosity of an aqueous solution containing 20% of the reaction product is from 300 to 2,500 centipoises at 20 DEG C.