| 摘要 |
The invention relates to a polyamine-epihalohydrin resin precursor comprising N-halo- hydrin groups attached to a polyamine backbone, and 3-hydroxyazetidinium groups attached to a polyamine backbone, said resin precursor having a solids content in the range of from 25 to 95 wt. % and a molar ratio of N-halohydrin groups to 3- hydroxyazetidinium groups in the range of from 1 :2 to 100:1, as determined by 13C-NMR. The invention also relates to a process for producing the polyamine-epihalohydrin resin precursor, a process for producing a composition comprising a polyamine-epihalohydrin resin, and a process for the production of paper.
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