Title:
【発明の名称】低いLAL‐反応を有する抽出物質低減セルロースを取得する方法
Document Type and Number:
Japanese Patent JP2635620
Kind Code:
B2
Abstract:
The invention relates to a process for obtaining extractive-material-reduced cellulose with a low LAL reaction, wherein cotton linters or wood pulps, subsequent to the customary digesting treatment, are subjected for 1 to 10 hours to hydraulic washing with water, lye with a concentration of less than 5 g/l alkali content, or with a diluted acid containing less than 5 g/l acid at temperatures of 120 DEG to 180 DEG C. and under a pressure of 2 to 20 bar. The resulting cellulose is used for the manufacture of hemodialysis and/or hemofiltration membranes in the form of flat membranes, tubular membranes or hollow filaments by regeneration of a cellulose solution containing the extractive-material-reduced cellulose with a low LAL reaction. The regeneration may be effected from solutions of cellulose cuoxam, cellulose xanthate, or solutions of cellulose in tertiary amine oxide or in an LiCl-containing solvent.
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Inventors:
YOAHIMU BEENKE
HERUMUUTO SHURUTSUE
ERUNSUTO BERUKU
MIHYAERU PERUGAA
HERUMUUTO SHURUTSUE
ERUNSUTO BERUKU
MIHYAERU PERUGAA
Application Number:
JP24595287A
Publication Date:
July 30, 1997
Filing Date:
October 01, 1987
Export Citation:
Assignee:
AKUZO NOOBERU NV
International Classes:
B01D71/10; C08L1/00; D01D5/24; D01F2/00; C08B1/00; D06M11/00; D06M11/05; D06M11/38; D06M13/192; D06M23/00; D21C5/00; D21C9/00; D21H11/12; D06M101/00; D06M101/02; D06M101/06; (IPC1-7): C08B1/00; C08L1/00; D01D5/24; D01F2/00
Domestic Patent References:
| JP5136801B2 |
Attorney, Agent or Firm:
Toshio Yano (1 outside)