Paper making and fiber liberation – Processes and products – Non-fiber additive
Patent
1993-07-30
1996-04-02
Chin, Peter
Paper making and fiber liberation
Processes and products
Non-fiber additive
162135, 1621641, 1621643, 427391, D21H 2118
Patent
active
055037143
ABSTRACT:
The invention relates to a new process for the preparation of cellulose-containing material provided with a dry-strength and wet-strength finish and/or sized, characterized in that the cellulose-containing material is treated with a water-dispersible polyisocyanate mixture (I), which contains tertiary amino and/or ammonium groups, optionally polyether units and optionally hydrophobic groups.
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Bomer Bruno
Halpaap Reinhard
Konig Joachim
Laas Hans-Josef
Probst Joachim
Bayer Aktiengesellschaft
Chin Peter
Gerstenzang William C.
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