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1. (WO2014199101) METHOD FOR TREATING CHEMICAL PULPS BY TREATMENT WITH OZONE IN THE PRESENCE OF MAGNESIUM IONS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/199101 International Application No.: PCT/FR2014/051460
Publication Date: 18.12.2014 International Filing Date: 13.06.2014
IPC:
D21C 9/00 (2006.01) ,D21C 9/08 (2006.01) ,D21C 9/10 (2006.01) ,D21C 9/153 (2006.01)
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9
After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9
After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
08
Removal of fats, resins, pitch, or waxes
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9
After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
10
Bleaching
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9
After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
10
Bleaching
147
with oxygen or its allotropic modifications
153
with ozone
Applicants: L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE[FR/FR]; 75 Quai d'Orsay F-75007 Paris, FR
ASSOCIATION DE GESTION DE L'ECOLE FRANCAISE DE PAPETERIE ET DES INDUSTRIES GRAPHIQUES (AGEFPI)[FR/FR]; 461 Rue de la Papeterie Domaine Universitaire F-38402 SAINT MARTIN D'HERES Cédex, FR
DEGREMONT FRANCE[FR/FR]; 183 Avenue du 18 juin 1940 F-92500 Rueil Malmaison, FR
XYLEM WATER SOLUTIONS HERFORD GMBH[DE/DE]; Boschstrasse 4 32051 Herford, DE
ARKEMA FRANCE[FR/FR]; 420 Rue d'Estienne d'Orves F-92700 Colombes, FR
Inventors: POUYET, Frédéric; FR
LACHENAL, Dominique; FR
CHIRAT, Christine; FR
Agent: BUCHET, Anne; FR
Priority Data:
135549613.06.2013FR
Title (EN) METHOD FOR TREATING CHEMICAL PULPS BY TREATMENT WITH OZONE IN THE PRESENCE OF MAGNESIUM IONS
(FR) PROCEDE DE TRAITEMENT DES PATES PAPETIERES CHIMIQUES PAR TRAITEMENT A L'OZONE EN PRESENCE D'IONS MAGNESIUM
Abstract:
(EN) The invention relates to a method for treating chemical pulp, comprising a step of treating the pulp with ozone following a step of alkaline extraction, wherein the alkaline extraction is carried out in the presence of magnesium ions (Mg2+).
(FR) La présente invention concerne un procédé de traitement de pâte papetière chimique comprenant une étape de traitement de la pâte à l'ozone suivie d'une étape d'extraction alcaline, dans lequel l'extraction alcaline se déroule en présence d'ions magnésium (Mg2+).
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)