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1. (WO2019048698) PROCESS FOR TREATING PULP
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Pub. No.: WO/2019/048698 International Application No.: PCT/EP2018/074427
Publication Date: 14.03.2019 International Filing Date: 11.09.2018
IPC:
D21C 9/00 (2006.01) ,D21H 21/22 (2006.01) ,D21C 9/10 (2006.01) ,D21H 17/14 (2006.01) ,D21H 11/18 (2006.01) ,D21H 19/12 (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
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
21
Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties
14
characterised by function or properties in or on the paper
22
Agents rendering paper porous, absorbent or bulky
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
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
03
Non-macromolecular organic compounds
05
containing elements other than carbon and hydrogen only
14
Carboxylic acids; Derivatives thereof
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
11
Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
16
modified by a particular after-treatment
18
Highly hydrated, swollen or fibrillatable fibres
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
19
Coated paper; Coating material
10
Coatings without pigments
12
applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
Applicants:
KEMIRA OYJ [FI/FI]; Energiakatu 4 00180 Helsinki, FI
Inventors:
ROBERTSÉN, Leif; FI
KONN, Jonas; FI
Agent:
AWA SWEDEN AB; Box 5117 200 71 Malmö, SE
Priority Data:
1751099-111.09.2017SE
Title (EN) PROCESS FOR TREATING PULP
(FR) PROCÉDÉ DE TRAITEMENT DE PÂTE
Abstract:
(EN) The present invention relates to a method of treating pulp to increase bulk, which comprises addition of distilled and/or equilibrium percarboxylic acid to a pulp obtained by converting at least 75 wt% of wood used to provide said pulp. The present invention further relates to cellulosic articles, pulp, and uses of pulp.
(FR) La présente invention concerne un procédé de traitement de pâte destiné à augmenter la masse, qui consiste à ajouter de l'acide percarboxylique distillé et/ou de l'équilibre à une pâte obtenue par conversion d'au moins 75 % en poids de bois utilisé pour fournir ladite pâte. La présente invention concerne en outre des articles cellulosiques, de la pâte et des utilisations de la pâte.
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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, ST, 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: English (EN)
Filing Language: English (EN)