LIGNOCELLULOSIC COMPOSITE MATERIAL AND METHOD FOR PREPARING THE SAME

A lignocellulosic composite material and a method for preparing the lignocellulosic composite material are disclosed. The composite material includes lignocellulosic particles and a binder resin being a mixture of a polyisocyanate component and a release agent. The release agent is formed from a fir...

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Bibliographische Detailangaben
Hauptverfasser:	BANANTO SANDRA, SAVINO THOMAS G
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUTORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTINGOF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL METALLURGY NAILING OR STAPLING MACHINES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	A lignocellulosic composite material and a method for preparing the lignocellulosic composite material are disclosed. The composite material includes lignocellulosic particles and a binder resin being a mixture of a polyisocyanate component and a release agent. The release agent is formed from a first component having hydroxyl groups and a second component having isocyanate groups in excess of the hydroxyl groups. The first component is selected from at least one of i) an acid phosphate and ii) pyrophosphates represented by those derived from the acid phosphates (i) and mixtures of the acid phosphates (i). The first component is passivated by mixing it with the second component which is preferably monomeric diphenylmethane diisocyanate selected from at least one of diphenylmethane-4,4'-diisocyanate, diphenylmethane-2,4'-diisocyanate, and diphenylmethane-2,2'-diisocyanate.