Process and agent for the oxidative bleaching of wood pulp and f

Details Process and agent for the oxidative bleaching of wood pulp and f Process and agent for the oxidative bleaching of wood pulp and f

1995-03-27

1997-03-04

Drodge, Joseph W.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 77, 162 78, 568335, D21H 1100, D21H 2132

Patent

active

056075448

ABSTRACT:
The present invention provides a process for the oxidative bleaching of wood pulps and for deinking waste paper by means of hydrogen peroxide and a stabilizing agent, wherein, as stabilizing agent, there is used 2-oxo-2-(4-hydroxyphenyl)-acethydroximic acid chloride (N,4-dihydroxy-.alpha.-oxophenylethanimidoyl chloride) of the formula: ##STR1##

REFERENCES:
patent: Re26009 (1966-05-01), Buckman et al.
patent: 3790687 (1974-02-01), Bertin et al.
Published Article "Hydrogen peroxide bleaching in waste paper re-cycling, J. de Ceuster et al," Paper Technology and Industry, Apr. 1977, pp. 126-132.

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