PAPER MADE FROM ALDEHYDE MODIFIED CELLULOSE PULP WITH SELECTED ADDITIVE

摘要

PURPOSE: Provided is a paper comprising aldehyde modified cellulose pulp prepared using nitroxyl radical mediated oxidation and further containing selected additives comprising aldehyde functional polymers or polymers containing functionality capable of reacting with aldehyde groups and having improved strength properties. CONSTITUTION: The method of making paper having wet strength, temporary wet strength, dry strength and high wet strength/dry strength ratio properties contains: using an aldehyde modified cellulose pulp as the pulp stock which is prepared by oxidizing cellulose or cellulose pulp in an aqueous system with an oxidant having an equivalent oxidizing power of up to about 5.0g of active chlorine per 100g of cellulose and a mediating effective amount of nitroxyl radical; and adding an effective amount of at least one additive comprising aldehyde functional polymers or polymers containing functional groups capable of reacting with aldehyde groups.