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1. (WO1991007543) A PROCESS FOR THE PRODUCTION OF PAPER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/007543 International Application No.: PCT/SE1990/000688
Publication Date: 30.05.1991 International Filing Date: 24.10.1990
Chapter 2 Demand Filed: 02.05.1991
IPC:
D21H 17/00 (2006.01) ,D21H 17/29 (2006.01) ,D21H 17/37 (2006.01) ,D21H 17/68 (2006.01) ,D21H 21/10 (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
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
21
of natural origin; Derivatives thereof
24
Polysaccharides
28
Starch
29
cationic
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
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
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
06
Paper forming aids
10
Retention agents or drainage improvers
Applicants:
EKA NOBEL AB [SE/SE]; S-445 01 Bohus, SE (AllExceptUS)
CARLSON, Ulf, Rune [SE/SE]; SE (UsOnly)
JOHANSSON, Hans, Erik [SE/SE]; SE (UsOnly)
JOHANSSON, Kjell, Axel [SE/SE]; SE (UsOnly)
Inventors:
CARLSON, Ulf, Rune; SE
JOHANSSON, Hans, Erik; SE
JOHANSSON, Kjell, Axel; SE
Agent:
SCHÖLD, Zaid; Nobel Industries Sweden AB Patent Department Box 11554 S-100 61 Stockholm, SE
Priority Data:
8903752-709.11.1989SE
Title (EN) A PROCESS FOR THE PRODUCTION OF PAPER
(FR) PROCEDE DE FABRICATION DU PAPIER
Abstract:
(EN) A process for the production of paper by forming and dewatering a suspension of cellulose containing fibers and optional fillers on a wire. Three components are added to the suspension, a cationic starch, a cationic polyacrylamide and a polymeric silicic acid, in order to improve retention and dewatering at paper production.
(FR) Le procédé de fabrication du papier décrit consiste à former et à égoutter une suspension de cellulose contenant des fibres et des charges éventuelles sur une toile machine sans fin. On ajoute à la suspension trois composants, à savoir un amidon cationique, un polyacrylamide cationique et un acide silicique polymère, afin d'améliorer la rétention et l'égouttage lors de la production du papier.
Designated States: AU, CA, FI, JP, NO, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
FI922055NO19921847ES2046040EP0500770CA2069308DE000069003249
AU1990067328