专利检索 ap:"V. R. Parthasarathy" 第 1 页

1.

发明授权
Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage 失效
标题翻译：第一阶段过氧化物增强的木质纤维素纤维氧脱木质的两阶段工艺

公开(公告)号：US5011572A

公开(公告)日：1991-04-30

申请号：US354522

申请日：1989-05-19

申请人： V. R. Parthasarathy , Meenaksi Sundaram , Hasan Jameel , Josef S. Gratzl , Ronald J. Klein

发明人： V. R. Parthasarathy , Meenaksi Sundaram , Hasan Jameel , Josef S. Gratzl , Ronald J. Klein

IPC分类号： D21C9/10 , D21C9/147 , D21C9/16

CPC分类号： D21C9/163 , D21C9/1057

摘要： A process is provided for a two-stage oxygen delignification of chemical pulp in which 0.01% to 1% hydrogen peroxide is incorporated into the first and, optionally the second stage. The invention is particularly suitable when the pulp is subsequently bleached with at least one chlorine dioxide stage and at least one hydrogen peroxide stage.