D21C - CPC Classification

• D21C1/00 » Pretreatment of the finely-divided materials before digesting 64
• D21C11/00 » Regeneration of pulp liquors {or effluent waste waters} 49
• D21C3/00 » Pulping cellulose-containing materials 84
• D21C5/00 » Other processes for obtaining cellulose, e.g. cooking cotton linters {Processes characterised by the choice of cellulose-containing starting materials} 197
• D21C7/00 » Digesters 78
• D21C9/00 » 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 } 66