Chlorine-free multifunctional resins for paper finishing
The invention relates to a novel process for the preparation of cellulose-containing material which has been treated and/or sized in order to improve the dry strength and wet strength, characterised in that the cellulose-containing material is treated with a water-dispersible polyisocyanate mixture...
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Format: | Patent |
Sprache: | eng ; ger |
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Zusammenfassung: | The invention relates to a novel process for the preparation of cellulose-containing material which has been treated and/or sized in order to improve the dry strength and wet strength, characterised in that the cellulose-containing material is treated with a water-dispersible polyisocyanate mixture (I) containing tertiary amino and/or ammonium groups, optionally polyether units and optionally hydrophobic groups. |
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