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Mechanism and Relationships of Chemical Degradation of Rigid Polyurethane Foam

Mechanism and Relationships of Chemical Degradation of Rigid Polyurethane Foam The regular trends in chemical degradation of rigid polyurethane foam under the action of oxypropylated hydroxy compounds were studied. The molecular-weight characteristics, functionality with respect to 4,4′-diphenylmethane diisocyanate and OH groups, viscosity, and the content of terminal OH groups of alcoholysis products at temperatures from 150 to 220°C were determined. A mechanism of degradation of the network structure of rigid polyurethane foam was suggested. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Mechanism and Relationships of Chemical Degradation of Rigid Polyurethane Foam

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References (5)

Publisher
Springer Journals
Copyright
Copyright © 2005 by MAIK “Nauka/Interperiodica”
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
DOI
10.1007/s11167-005-0401-1
Publisher site
See Article on Publisher Site

Abstract

The regular trends in chemical degradation of rigid polyurethane foam under the action of oxypropylated hydroxy compounds were studied. The molecular-weight characteristics, functionality with respect to 4,4′-diphenylmethane diisocyanate and OH groups, viscosity, and the content of terminal OH groups of alcoholysis products at temperatures from 150 to 220°C were determined. A mechanism of degradation of the network structure of rigid polyurethane foam was suggested.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Jul 6, 2005

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