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1. (WO1993021376) TREATMENT OF CELLULOSIC MATERIAL AND COMPOSITIONS FOR USE IN THIS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1993/021376    International Application No.:    PCT/GB1993/000780
Publication Date: 28.10.1993 International Filing Date: 14.04.1993
Chapter 2 Demand Filed:    08.11.1993    
IPC:
D21C 5/02 (2006.01)
Applicants: ALLIED COLLOIDS LIMITED [GB/GB]; P.O. Box 38, Low Moor, Bradford, West Yorkshire BD12 0JZ (GB) (For All Designated States Except US).
LANGLEY, John, Graham [GB/GB]; (GB) (For US Only)
Inventors: LANGLEY, John, Graham; (GB)
Agent: LAWRENCE, Peter, Robin, Broughton; Gill Jennings & Every, Broadgate House, 7 Eldon Street, London EC2M 7LH (GB)
Priority Data:
9208293.2 15.04.1992 GB
Title (EN) TREATMENT OF CELLULOSIC MATERIAL AND COMPOSITIONS FOR USE IN THIS
(FR) TRAITEMENT DE MATERIAU CELLULOSIQUE ET COMPOSITIONS UTILISEES
Abstract: front page image
(EN)A process of de-inking waste paper can be operated under conditions using a simple combination of chemicals to result in a waste liquor that is substantially environmentally friendly. The process comprises forming a pulp from the waste paper in an aqueous medium that has a pH of between 6 and 9 and that is substantially free of dissolved phosphate and that includes an ink-dispersing amount of dispersing agent, and separating the ink from the pulp.
(FR)Un procédé de désencrage de papier de récupération est mis en ÷uvre au moyen d'une simple combinaison de produits chimiques et permet d'obtenir une lessive résiduaire qui est non nocive pour l'environnement. Le procédé consiste à former une pâte à partir du papier de récupération dans un milieu aqueux ayant un pH compris entre 6 et 9, le milieu étant sensiblement dépourvu de phosphate dissous et comprenant une quantité d'agent de dispersion d'encre, et ensuite à séparer l'encre de la pâte.
Designated States: AT, AU, BB, BG, BR, CA, CH, CZ, DE, DK, ES, FI, GB, HU, JP, KP, KR, KZ, LK, LU, MG, MN, MW, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SK, UA, US, VN.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)