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1. (WO1997018351) A PROCESS FOR THE PRODUCTION OF PAPER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018351 International Application No.: PCT/SE1996/001442
Publication Date: 22.05.1997 International Filing Date: 08.11.1996
Chapter 2 Demand Filed: 18.04.1997
IPC:
D21H 17/37 (2006.01) ,D21H 17/45 (2006.01) ,D21H 17/68 (2006.01) ,D21H 23/14 (2006.01)
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
20
Macromolecular organic compounds
33
Synthetic macromolecular compounds
34
obtained by reactions only involving carbon-to-carbon unsaturated bonds
37
Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
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
20
Macromolecular organic compounds
33
Synthetic macromolecular compounds
34
obtained by reactions only involving carbon-to-carbon unsaturated bonds
41
containing ionic groups
44
cationic
45
Nitrogen-containing groups
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
63
Inorganic compounds
67
Water-insoluble compounds, e.g. fillers, pigments
68
siliceous, e.g. clays
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
23
Processes or apparatus for adding material to the pulp or to the paper
02
characterised by the manner in which substances are added
04
Addition to the pulp; After-treatment of added substances in the pulp
06
Controlling the addition
14
by selecting point of addition or time of contact between components
Applicants:
EKA CHEMICALS AB [SE/SE]; S-445 80 Bohus, SE (AllExceptUS)
ASPLUND, Anna [SE/SE]; SE (UsOnly)
ANDERSSON, Kjell [SE/SE]; SE (UsOnly)
LINDGREN, Erik [SE/SE]; SE (UsOnly)
Inventors:
ASPLUND, Anna; SE
ANDERSSON, Kjell; SE
LINDGREN, Erik; SE
Agent:
SCHÖLD, Zaid; Eka Chemicals AB Patent Dept. P.O. Box 11556 S-100 61 Stockholm, SE
Priority Data:
9504081-215.11.1995SE
Title (EN) A PROCESS FOR THE PRODUCTION OF PAPER
(FR) PROCEDE DE FABRICATION DE PAPIER
Abstract:
(EN) The invention relates to a process for the production of paper from a suspension of cellulose containing fibres, and optional fillers, which comprises adding a water-soluble cationic or amphoteric branched acrylamide-based polymer and an anionic aluminium-containing silica sol to the suspension and forming and draining the suspension on a wire.
(FR) L'invention porte sur un procédé de fabrication de papier à partir d'une suspension de fibres contenant de la cellulose et, éventuellement, de matières de charge. Le procédé consiste à ajouter à la suspension un polymère à base d'acrylamide ramifié, hydrosoluble, cationique ou amphotère ainsi qu'une solution colloïdale de dioxyde de silicium anionique, contenant de l'aluminium, et à constituer puis à égoutter la suspension sur une toile machine.
Designated States: AU, BG, BR, CA, CN, CZ, HU, JP, KR, MX, NO, NZ, PL, RO, RU, SI, SK, US
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19982109ES2158367EP0870087RU02147058US6103064JP2945761
JPH11501705 CN1202212CA2237337DE000069612566PT870087KR1019990067199
AU1996076590