METHOD FOR REDUCING THERMAL AND LIGHT-INDUCED BRIGHTNESS REVERSION IN LIGNIN-CONTAINING PULPS.

摘要

A METHOD AND ARTICLE OF MANUFACTURE THEREOF IS PROVIDED FOR REDUCING BRIGHTNESS REVERSION IN BLEACHED LIGNIN - CONTAINING PULPS OR NEWSPRINT BY THE TREATMENT OF THE BLEACHED LIGNIN - CONTAINING PULP OR NEWSPRINT WITH 2, 5 - DIHYDROXYDIOXANE. IN ONE EMBODIMENT, CALCIUM CARBONATE IS ADDED TO ENHANCE THE ACTIVITY OF 2, 5 - DIHDROXYDIOXANE.