Bleaching compositions and processes employing sulfamates...

Details Bleaching compositions and processes employing sulfamates... Bleaching compositions and processes employing sulfamates...

D - Textiles, Paper

21

C

D21C 9/147 (2006.01) D21C 9/00 (2006.01) D21C 9/10 (2006.01) D21C 9/16 (2006.01)

Patent

CA 2168289

Pulp bleaching processes employing peroxides and/or oxygen are improved by usingbleaching additives, preferably before the application of the peroxide and/or oxygen. The bleaching additives contain at least one alkali metal sulfamate such as a sodium sulfamate and a polyaminocarboxylic acid such as DTPA or a salt thereof, such assodium DTPA.

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