The present invention relates to new water-soluble polyquaternary compounds which are obtained by imidation of (A) specific alternating copolymers of maleic anhydride and olefines with (B) specific amines and (C) subsequent alkylation of the reaction product AB, the components (A) and (B) having the meaning given in the text of the Application. The invention furthermore relates to a process for the preparation of these water-soluble polyammonium compounds and their use as agents for improving the wet and dry tear strength of paper. The invention also relates to new intermediate products for the preparation of the compounds according to the invention.
本发明涉及一种新的
水溶性聚季
铵化合物,其通过将(A)特定交替共聚物的
马来酸酐和烯烃与(B)特定
胺类化合物进行互缩反应,然后对反应产物AB进行(C)烷基化而得到,其中组分(A)和(B)的含义在本申请文件中给出。本发明还涉及一种制备这些
水溶性聚阴离子化合物的方法以及它们作为改善纸张湿强度和干强度的剂的用途。本发明还涉及用于制备本发明化合物的新中间体。