New isocyanates with functional groups, e.g. halogen and methyl ester, were
polymerized. By means of a transesterification reaction with alcohol chrom
ophores, the methyl ester polyisocyanates were transformed into chromophore
functionalized. polymers. In this way, polyisocyanates with a degree of fu
nctionalization up to 30% could be obtained. (C) 2001 Elsevier Science B.V.
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