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

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste

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

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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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