Treatment of alkaline bleached mechanical wood pulp with pectina

Details Treatment of alkaline bleached mechanical wood pulp with pectina Treatment of alkaline bleached mechanical wood pulp with pectina

1994-08-23

1996-01-30

Lacey, David L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 65, 162 78, 162190, 435277, 435278, D21C 300

Patent

active

054878128

ABSTRACT:
The present invention relates to a method of making paper from bleached or alkaline treated pulp by dewatering pulp containing bleached or alkaline treated vegetable fibers from wood or non-wood species. It was found that such bleached or alkaline treated pulps contain a substantial amount of harmful pectins. By incorporating pectinase in the bleached or alkaline treated pulp such harmful pectins in the aqueous phase of the pulp are degraded and thus rendered harmless to papermaking processes.

REFERENCES:
patent: 4617383 (1986-10-01), Jaskowski
patent: 4687745 (1987-08-01), Farrell
patent: 4891096 (1990-01-01), Akkawi
patent: 4964955 (1990-10-01), Lamar et al.
Pilon et al. "Increasing Water Retention of Mech. Pulp by Biological treatment," Tappi, Jun. 1982, pp. 93-96.
Paice, M. G & Jurasek, L., "Removing Hemicellulose from Pulps By Specific Enzyme Hydrolysis", International Conference, London 1983.

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