Method of treating lignocellulosic or cellulosic pulp to...

Details Method of treating lignocellulosic or cellulosic pulp to... Method of treating lignocellulosic or cellulosic pulp to...

D - Textiles, Paper

21

C

9/64

D21C 9/00 (2006.01)

Patent

CA 1102969

ABSTRACT OF THE DISCLOSURE A process is described of saturating a lignocellulosic or a cellulosic pulp with gaseous ammonia. Preferably, moist pulp is subjected to a substantially gaseous ammonia atmosphere under elevated pressure. The process enables better quality paper to be produced from higher yield pulps by promoting kinking of pulp fibres and/or improves tearing strength in such paper. Ammonia previously has been used as a base in oxidative delignification but not in a discrete step. - 1 -

291943

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