SHOE PRESS ROLL COVER

A shoe press roll cover for a machine for producing and/or finishing a fibrous web, such as a paper, card or tissue web, is formed of a matrix material composed of polyurethane, formed essentially from 4,4′-MDI as isocyanate, at least one polyol and at least one crosslinker. The polyurethane matrix...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Delmas, Delphine, Matuschczyk, Uwe
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY METHODS OF PRODUCING PAPER THEREON ORGANIC MACROMOLECULAR COMPOUNDS PAPER-MAKING PAPER-MAKING MACHINES PRODUCTION OF CELLULOSE TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A shoe press roll cover for a machine for producing and/or finishing a fibrous web, such as a paper, card or tissue web, is formed of a matrix material composed of polyurethane, formed essentially from 4,4′-MDI as isocyanate, at least one polyol and at least one crosslinker. The polyurethane matrix material is biobased to an extent of at least 20% by weight. The polyol and the crosslinker are selected from one of several combinations: a) biobased PTMEG as polyol and a mixture of MCDEA and PTMEG as crosslinker; b) polycarbonate as polyol and a mixture of MCDEA and biobased polycarbonate polyol as crosslinker; c) a mixture of biobased polycarbonate polyol and PTMEG as polyol and 1,4-BDO as crosslinker; d) PTMEG as polyol and a mixture of PTMEG and MCDEA as crosslinker, with the 4,4′-MDI in the isocyanate and the PTMEG in the polyol being biobased.