STRENGTHENING COMPOSITIONS AND TREATMENTS FOR LIGNOCELLULOSIC MATERIALS

The strength of lignocellulosic materials is improved by treating them with water-soluble strengthening agents containing sulfonic units, and rendering these agents water-insoluble by reacting them with compounds containing epoxide rings and quaternary ammonium groups. Thus, a substantial reduction...

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Bibliographische Detailangaben
Hauptverfasser: OWENS, BLAIR ALEX, WNUK, ANDREW JULIAN, COLLIAS, DIMITRIS IOANNIS
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The strength of lignocellulosic materials is improved by treating them with water-soluble strengthening agents containing sulfonic units, and rendering these agents water-insoluble by reacting them with compounds containing epoxide rings and quaternary ammonium groups. Thus, a substantial reduction or elimination of the bleeding of said strengthening agents from the lignocellulosic materials when touched with wet hands or contacted under humid conditions is achieved.