Process for the delignifcation and bleaching of a lignocellulose material

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United States of America Patent

PATENT NO 5630906
SERIAL NO

08356283

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Abstract

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A method is provided for delignifying and bleaching a lignocellulose material, wherein an aqueous solution of a redox catalyst and an oxidant is reacted with the material. The catalyst comprises an organometallic cation of the general formula [(1)Mno.sub.2 Mn(L)].sup.n+, wherein Mn is manganese (III) or (IV) oxide, the two Mn's of this cation may form a pair in a III-III, III-IV or IV-IV oxidative state, n is 2, 3 or 4, O is oxygen, and L is a ligand comprising 4 nitrogen atoms co-ordinating the manganese.

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  • ELF AQUITAINE PRODUCTION

International Classification(s)

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  • 1995 Application Filing Year
  • D21C Class
  • 135 Applications Filed
  • 68 Patents Issued To-Date
  • 50.38 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances1995199619971998199920002001200220030255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boe, Jean-Francedillaois Toulouse, FR 1 41
Girerd, Jean-Jacques Gif Sur Yvette, FR 2 42
Guignard, Claude Ossage, FR 10 321
Seris, Jean-Louis Jurancon, FR 10 153
Verlhac, Jean-Baptiste Talence, FR 3 132

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  • 41 Citation Count
  • D21C Class
  • 97.96 % this patent is cited more than
  • 28 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges129963101 - 1011 - 2021 - 3031 - 4051 - 6002468101214161820222426283032

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