Process for modifying, breaking down or bleaching ligin,...

Details Process for modifying, breaking down or bleaching ligin,... Process for modifying, breaking down or bleaching ligin,...

D - Textiles, Paper

21

C

D21C 3/00 (2006.01) C11D 3/386 (2006.01) C11D 3/39 (2006.01) C12S 3/00 (2006.01) D21C 5/00 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2182182

The present invention pertains to a process for modifying, breaking down or bleaching lignin material containing lignin or like substances using oxidation catalysts and suitable oxidizing agents wherein these catalysts are used in combination with aliphatic, cycloaliphatic, heterocyclic or aromatic compounds containing NO, NOH or (A).

Ce procédé de modification, de dégradation ou de blanchiment de la lignine, de matériaux contenant de la lignine, ou de produits similaires, fait intervenir des catalyseurs d'oxydation et les agents d'oxydation appropriés. Les catalyseurs utilisés sont associés à des liaisons aliphatiques, cycloaliphatiques, hétérocycliques ou aromatiques contenant NO, NOH ou (A).

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