Urethanes and polyurethanes based on oxypropylated cork: 1. Appraisal and reactivity of products

Authors
Evtiouguina, M Gandini, A Neto, CP Belgacem, NM
Citation
M. Evtiouguina et al., Urethanes and polyurethanes based on oxypropylated cork: 1. Appraisal and reactivity of products, POLYM INT, 50(10), 2001, pp. 1150-1155
Citations number
12
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER INTERNATIONAL
ISSN journal
09598103 → ACNP
Volume
50
Issue
10
Year of publication
2001
Pages
1150 - 1155
Database
ISI
SICI code
0959-8103(200110)50:10<1150:UAPBOO>2.0.ZU;2-H
Abstract
The reaction of various polyols derived from the oxypropylation of cork wit h aliphatic and aromatic mono- and diisocyanates was studied in solution at room temperature. In all instances, good second-order kinetics were observ ed and the corresponding rate constant determined. The reactivity of the ar omatic isocyanate was found to be much higher than that of aliphatic counte rparts. The ensuing urethanes and polyurethanes were characterised by FTIR and H-1 NMR spectroscopy, DSC and sol/gel distribution. (C) 2001 Society of Chemical Industry.