Method of degumming cellulosic fibres

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...

Reexamination Certificate

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C162S017000, C162S020000, C162S025000, C162S078000, C162S081000, C162S090000, C162S091000, C162S094000, C162S096000, C162S098000

Reexamination Certificate

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07892397

ABSTRACT:
A process for producing dissolving pulp includes a degumming step using a degumming liquor which includes hydrogen peroxide and ammonia.

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Efanov, M.V. et al., Peroxide-Amonia Delignification of Pine Wood, Chemistry of Natural Compounds, 2004, pp. 172-175, vol. 40, No. 2, Plenem Publishing Corporation, Russia.
Kim, Jun Seok, et al., Pretreatment of Wastepaper and Pulp Mill Sludge by Aqueous Ammonia and Hydrogen Peroxide, Applied Biochemistry and Biotechnology, 2000, pp. 129-139, vol. 84-86, Humana Press Inc.

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