Darstellung und Derivatisierung von linearem Polyvinylamin zur selektiven Komplexbildung in homogener Phase

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Abstract
Poly(1‐aminoethylene) (polyvinylamine) (4) was prepared by hydrazinolysis of poly(1‐succinimidoethylene) (2) [poly(N‐vinylsuccinimide)]. The water‐soluble polymer 4, with more than 95% of primary amino groups, was used as basic material for the synthesis of macromolecular complex forming reagents. By the reaction of poly(1‐ammonioethylene chloride) (3) [poly(vinylamine hydrochloride)] with 2‐pyridinecarbaldehyde a complex forming polymer 5 was obtained, which is highly selective for iron. Poly{1‐[bis(carboxymethyl)amino]ethylene} (6) from 4 and chloroacetic acid is a reagent for copper, whereas poly[1‐(3‐methylthioureido)‐ethylene] (7) from 4 and N‐methylisothiocyanate shows a good selectivity for mercury. The ultrafiltration technique allows a continuous procedure for the separation of the polymer complexes. The formation and stability of the prepared complexes of 4and its derivatives 5, 6, and 7 in homogeneous phase are investigated and discussed.

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