Process for the production of a hemicellulose hydrolysate...

Details Process for the production of a hemicellulose hydrolysate... Process for the production of a hemicellulose hydrolysate...

D - Textiles, Paper

21

C

9/13

D21C 3/00 (2006.01) C13K 1/02 (2006.01) D21C 3/22 (2006.01)

Patent

CA 1295095

Abstract The invention relates to a process for the pro- duction of a hemicellulose hydrolysate and special pulp through two steps, the first step comprising the prehydrolysis of the material and the second step the dissolving of the lignin contained in the prehydro- lyzed material, According to the process the lignin dissolving is carried out by means of a neutral sul- phite cooking with anthraquinone or a derivative thereof as a catalyst, the pH of the cooking liquor being initially at least 10.

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