Process for treating mechanical pulps and/or products...

Details Process for treating mechanical pulps and/or products... Process for treating mechanical pulps and/or products...

D - Textiles, Paper

21

B

9/61, 9/64

D21B 1/12 (2006.01) A61L 15/20 (2006.01) D21B 1/16 (2006.01) D21B 1/38 (2006.01)

Patent

CA 1073162

ABSTRACT OF THE DISCLOSURE A mechanical pulp, i.e. a pulp obtained by the mechanical defibration of wood, is treated with a buffer selected from the group consisting of an alkali metal or ammonium salt of phosphoric, carbonic, citric or tartaric acid to a pH of 6-10, whereby, after ageing, the pulp maintains its original hydrofilic property. The amount of buffer added to the pulp is at least 0.2 and preferably 0.5% by weight based on the dry pulp.

234947

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