D
TEXTILES; PAPER
D
TEXTILES; PAPER
D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
D21C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9/00
After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters; ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
9/00
After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters; ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere