Strengthening compositions and treatments for lignocellulosic materials
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United States of America Patent
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Sep 5, 2000
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N/A
app pub date -
Nov 12, 1998
filing date -
Nov 12, 1998
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Expired
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Abstract
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 azetidinium rings. 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.
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