Title:
製紙用パルプの製造方法
Document Type and Number:
Japanese Patent JP5275472
Kind Code:
B2
Abstract:
The invention relates to a method for manufacturing papermaking pulp, including: a step of refining wood, including an ozone treatment, so as to obtain a mechanical pulp; a deacidification step including placing the mechanical pulp in contact with a deacidification composition including at least one alkaline agent for more than one hour; and a bleaching step including placing the deacidified pulp in contact with a bleaching composition; wherein the pH varies by less than 0.2 point during the last 30 minutes of the deacidification step, and the pH is 6. to 10 at the end of the deacidification step.
Inventors:
Carre, Christoph
Ostasi, Jean-Christophe
Ostasi, Jean-Christophe
Application Number:
JP2011532732A
Publication Date:
August 28, 2013
Filing Date:
October 23, 2009
Export Citation:
Assignee:
Arkema France
IT Tea Manufacturing Enterprises LLC
IT Tea Manufacturing Enterprises LLC
International Classes:
D21C9/10; D21C9/153
Domestic Patent References:
| JP54059406A | ||||
| JP4228691A | ||||
| JP54011301A | ||||
| JP2003049385A | ||||
| JP1501805A |
Foreign References:
| WO2008081078A1 |
Attorney, Agent or Firm:
Takashi Koshiba
Hiroshi Koshiba
Hiroshi Koshiba