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.)
Pioneer Licensing Inc
Original Assignee
CIL Inc
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 CIL IncfiledCriticalCIL Inc
Priority to CA000451494ApriorityCriticalpatent/CA1216105A/fr
Application grantedgrantedCritical
Publication of CA1216105ApublicationCriticalpatent/CA1216105A/fr
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C3/00—Pulping cellulose-containing materials
D21C3/22—Other features of pulping processes
D21C3/222—Use of compounds accelerating the pulping processes
Landscapes
Paper
(AREA)
CA000451494A1984-04-061984-04-06Fabrication de la pate a papier
ExpiredCA1216105A
(fr)
Transformation de bois dur en pate par le sulfure de sodium et l'hydroxyde de sodium en produisant in situ du sulfure d'hydrogene au debut de la transformation
Delignification of lignocellulosic material with a soda pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone in admixture with a nitro aromatic compound