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Synthesis and characterization of novel polyurethanes based on 1,3-bis(hydroxymethyl) benzimidazolin-2-one and 1,3-bis(hydroxymethyl) benzimidazolin-2-thione hard segments

✍ Scribed by A. V. Raghu; G. S. Gadaginamath; Tejraj M. Aminabhavi

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
161 KB
Volume
98
Category
Article
ISSN
0021-8995

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Hard segment model compounds based on diphenyl methane diisocyanate (MDI) and hydroquinone bis(2-hydroxyethyl) ether (HQE) were synthesized; these models were end-capped with ethanol (E) or 2-phenoxyethanol (F). NMR spectroscopy and GPC analysis confirm the expected structure: R-(MDI-HQE) pΟͺ1 -MDI-R