Process for reducing the viscosity of tannin solution

The presence of large amounts of tannins in formaldehyde glues causes these glues to become very viscous and difficult to dispense by spraying. The addition of ligninsulphonates, for example in the form of sulphite waste liquors, leads to a reduction in the viscosity of these glues.

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Bibliographische Detailangaben
Hauptverfasser:	ROFFAEL,EDMONE, MIERTZSCH,HELMUT
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The presence of large amounts of tannins in formaldehyde glues causes these glues to become very viscous and difficult to dispense by spraying. The addition of ligninsulphonates, for example in the form of sulphite waste liquors, leads to a reduction in the viscosity of these glues.