✦ LIBER ✦
Water-Free Synthesis of Polyurethane Foams Using Highly Reactive Diisocyanates Derived from 5-Hydroxymethylfurfural
✍ Scribed by Christopher N. D. Neumann; Winfried D. Bulach; Matthias Rehahn; Roland Klein
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 260 KB
- Volume
- 32
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
This paper reports on the synthesis of a new highly reactive diisocyanate monomer based on hydroxymethylfurfural. It further describes its catalyst‐free conversion to linear‐chain thermoplastic polyurethanes as well as to cross‐linked polyurethane foams. In addition, a novel strategy for the synthesis of polyurethane foams without the necessity of using water is developed. Nitrogen is utilized herein as blowing agent which is formed during Curtius rearrangement of a new furan based carboxylic azide into its corresponding diisocyanate.
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