公开(公告)号：CA1055656A

公开(公告)日：1979-06-05

申请号：CA201323

申请日：1974-05-31

Applicant: DEGUSSA

Inventor： KRUGER HORST ,  SCHROTER ,  HELMUT ,  TRASER ,  WERNER ,  PFAND ,  HERBERT ,  RATH

IPC: D21C9/10 ,  D21C9/16

Abstract: The present invention provides in a multistage process for fully bleaching a pulp, the improvement in which in the first stage of said bleaching process, the pulp is hydrolyzed with a strongly alkaline aqueous peroxide solution whereby a minimum of chlorine may be used in said process.