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

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

D - Textiles, Paper

21

C

D21C 9/16 (2006.01) D21C 5/02 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2145439

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 stabilising agent, wherein, as stabilising agent, there is used 2-oxo-2-(4-hydroxyphenyl)-acethydroximic acid chloride (N,4-dihydroxy-.alpha.-oxophenylethanimidoyl chloride) of the formula:- Image The present invention also provides an agent for stabilising hydrogen peroxide-containing bleaching and deinking solutions for waste paper, wherein it contains 2-oxo-2-(4-hydroxyphenyl)-acethydroximic acid chloride (N,4-dihydroxy-.alpha.-phenylethanimidoyl chloride).

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