title: Water-free synthesis of polyurethane foams using highly reactive diisocyanates derived from 5-hydroxymethylfurfural.
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.
authors.affiliation: Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Petersenstrasse 22, D-64287 Darmstadt, Germany.
authors.forename: Christopher N D
authors.initials: CN
authors.lastname: Neumann
authors.forename: Winfried D
authors.initials: WD
authors.lastname: Bulach
authors.forename: Matthias
authors.initials: M
authors.lastname: Rehahn
authors.forename: Roland
authors.initials: R
authors.lastname: Klein
mesh_terms: D001386:Azides / Q000737:chemistry; D002264:Carboxylic Acids / Q000737:chemistry; D002384:Catalysis; D005662:Furaldehyde / Q000031:analogs & derivatives* / Q000737:chemistry; D017953:Isocyanates / Q000737:chemistry*; D011140:Polyurethanes / Q000138:chemical synthesis*
chemical_list: D001386:Azides; D002264:Carboxylic Acids; D017953:Isocyanates; D011140:Polyurethanes; C008046:5-hydroxymethylfurfural; C028279:polyurethane foam; D005662:Furaldehyde