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Title:
MANUFACTURING METHOD OF DISSOLVED KRAFT PULP
Document Type and Number:
Japanese Patent JP2017179690
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a technology for effectively manufacturing a dissolved kraft pulp high in α-cellulose content.MEANS: There is provided a method for manufacturing a dissolved kraft pulp including a process for kraft digesting a material chip on which a pre-hydrolysis treatment conducted, a process for conducting oxygen delignification treatment on digested pulp and a process for alkali purifying the oxygen delignification treated pulp, the pulp is treated at sodium hydroxide concentration of 3 to 25 mass%, temperature of 20 to 50°C and treatment time of 10 min. to 60 min. in the alkali purifying process.SELECTED DRAWING: None

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Inventors:
TAKAYAMA MASAHITO
KUROSU KAZUHIRO
Application Number:
JP2017128901A
Publication Date:
October 05, 2017
Filing Date:
June 30, 2017
Export Citation:
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Assignee:
JUJO PAPER CO LTD
International Classes:
D21C3/02; C08B1/02; C08B3/06; D21C1/02
Domestic Patent References:
JP6196022B22017-09-13
JP2002533587A2002-10-08
JP2009203583A2009-09-10
JP2001026601A2001-01-30
JP2004256924A2004-09-16
Other References:
SIXTA, HANDBOOK OF PULP, JPN6018012897, 30 January 2008 (2008-01-30), pages 933 - 934, ISSN: 0003775496
SIXTA, HANDBOOK OF PULP, JPN6018012898, 30 January 2008 (2008-01-30), pages 351 - 355, ISSN: 0003959474
Attorney, Agent or Firm:
Shinjiro Ono
Mitsutoshi Nakamura
Yuki Ogasawara
Noriyuki Arai



 
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