The first direct synthesis of a carboxylated polyurethane is described. The polyurethane, of the segmented type, was obtained by reaction of 4,4′-diphenylmethane diisocyanate with poly(propylene oxide) and the tributylammonium salt of dihydroxymethylpropionic acid. The polymer was characterized by viscometry, DSC, i.r. and NMR spectroscopy. The reactivity of the free carboxylic group in the polymer was evaluated for esterification and amidation
Direct synthesis of carboxylated polyurethanes / Marconi, Valter; Martinelli, Andrea; Piozzi, Antonella; D., Zane. - In: EUROPEAN POLYMER JOURNAL. - ISSN 0014-3057. - STAMPA. - 27:(1991), pp. 135-139. [10.1016/0014-3057(91)90211-6]
Direct synthesis of carboxylated polyurethanes
MARCONI, Valter;MARTINELLI, Andrea;PIOZZI, Antonella;
1991
Abstract
The first direct synthesis of a carboxylated polyurethane is described. The polyurethane, of the segmented type, was obtained by reaction of 4,4′-diphenylmethane diisocyanate with poly(propylene oxide) and the tributylammonium salt of dihydroxymethylpropionic acid. The polymer was characterized by viscometry, DSC, i.r. and NMR spectroscopy. The reactivity of the free carboxylic group in the polymer was evaluated for esterification and amidationI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
