Bleaching compositions comprising sulfamates and borates or gluc

Details Bleaching compositions comprising sulfamates and borates or gluc Bleaching compositions comprising sulfamates and borates or gluc

1995-01-30

1997-06-17

Spear, Frank

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 78, D21C 108

Patent

active

056393482

ABSTRACT:
Pulp bleaching processes employing peroxides and/or oxygen are improved by using stabilizing bleaching additives, preferably before the application of the peroxide and/or oxygen. The bleaching additives contain at least one sulfamic acid or sulfamate such as sodium sulfamate and gluconic acid or a soluble gluconate, or alternatively an alkali metal borate.

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patent: 4619663 (1986-10-01), Tatin
patent: 4740212 (1988-04-01), Yant et al.
patent: 4959075 (1990-09-01), Baehr et al.

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