Process for improving the drainage capacity of a paper pulp using an enzyme obtained from the fungus Humicola insolens or the bacterium Cellulomonas
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United States of America Patent
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May 26, 1992
Grant Date -
N/A
app pub date -
Oct 1, 1990
filing date -
Oct 2, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for treating paper pulp using an enzyme composition. An enzyme composition containing cellulases or hemicellulases selected from among those derived from the fungus Humicola insolens and from the bacterium Cellulomonas is made to act upon an aqueous suspesnion of the pulp possessing a given Schopper-Riegler level (SR) according to Standard NFQ 50 003. This procedure is particularly useful for treating a recycled fiber-based paper pulp having a pH of at least 5.
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