ALDEHYDE-MODIFIED CELLULOSIC FIBERS FOR PAPER PRODUCTS HAVING HIGH INITIAL WET STRENGTH

摘要

PURPOSE: A cellulosic fiber is provided to be useful for a paper product having a temporary wet strength and to be useful for supplying the paper product with an excellent initial wet strength. CONSTITUTION: Modified cellulosic fibers are formed by (1) esterifying cellulosic fibers with a 1,2-disubstituted alkene that has at least one carboxylic acid group reactive with cellulosic hydroxyl groups and (2) oxidizing the esterified fibers to form aldehyde groups. The modified fibers are useful in paper products, which tend to have temporary wet strength. Strength additives may be included in the paper product to impart a higher level of temporary wet strength or permanent wet strength.