Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weyerhaeuser Co
Original Assignee
Weyerhaeuser Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weyerhaeuser CofiledCriticalWeyerhaeuser Co
Priority to FR7928964ApriorityCriticalpatent/FR2475084A1/fr
Publication of FR2475084A1publicationCriticalpatent/FR2475084A1/fr
Application grantedgrantedCritical
Publication of FR2475084B1publicationCriticalpatent/FR2475084B1/fr
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
D21C9/10—Bleaching ; Apparatus therefor
D21C9/1073—Bleaching ; Apparatus therefor with O3
Landscapes
Life Sciences & Earth Sciences
(AREA)
Engineering & Computer Science
(AREA)
Wood Science & Technology
(AREA)
Paper
(AREA)
FR7928964A1979-11-231979-11-23Delignification par l'ozone a faible consistance
GrantedFR2475084A1
(fr)
