EP 0522940 A1 19930113 - Process for the preparation of paper and paper obtained therefrom.
Title (en)
Process for the preparation of paper and paper obtained therefrom.
Title (de)
Verfahren zur Herstellung von Papier und daraus hergestelltes Papier.
Title (fr)
Procédé de fabrication de papier et papier ainsi obtenu.
Publication
Application
Priority
FR 9108819 A 19910712
Abstract (en)
Process for the manufacture of paper, characterised in that the following are added to the fibrous composition entering the flow box: a) an inorganic filler, b) an adhesion promoter, and c) a retaining system consisting of: c)1) cationic starch, c)2) aluminium polychloride, and c)3) silica of anionic nature. The products c)1), c)2) and c)3) have the following respective weight percentages on a weight basis in relation to the weight of the composition entering the flow box: 0.15 to 1.7 %, 0.05 to 0.25 % expressed as percentage of Al2O3, and 0.01 to 0.3 % expressed as percentage of SiO2. The cationic starch has a molecular weight of 3x10<4> to 12x10<4> and a degree of substitution of 0.01 to 0.1.
Abstract (fr)
Le Procédé de fabrication de papier est caractérisé en ce que l'on ajoute à la composition fibreuse entrant en caisse de tête: a) une charge minérale, b) un agent de collage, et c) un système rétenteur constitué de: c)1) amidon cationique, c)2) polychlorure d'aluminium, et c)3) silice à caractère anionique Les produits c)1), c)2) et c)3) présentent en poids, par rapport au poids de la composition entrant en caisse de tête, les pourcentages pondéraux respectifs suivants: 0,15 à 1,7%, 0,05 à 0,25% exprimé en pourcentage d'Al2O3, et 0,01 à 0,3% exprimé en pourcentage de SiO2. L'amidon cationique présente un poids moléculaire de 3.10<4> à 12.10<4> et un degré de substitution de 0,01 à 0,1.
IPC 1-7
IPC 8 full level
D21H 17/67 (2006.01); D21H 17/00 (2006.01); D21H 17/05 (2006.01); D21H 17/29 (2006.01); D21H 17/66 (2006.01); D21H 17/68 (2006.01)
CPC (source: EP US)
D21H 17/00 (2013.01 - EP US); D21H 17/29 (2013.01 - EP US); D21H 17/66 (2013.01 - EP US); D21H 17/68 (2013.01 - EP US)
Citation (search report)
[A] EP 0285487 A1 19881005 - ATOCHEM [FR]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0522940 A1 19930113; EP 0522940 B1 19960918; AT E143075 T1 19961015; CA 2073610 A1 19930113; CA 2073610 C 19960917; DE 69213850 D1 19961024; DE 69213850 T2 19970220; DK 0522940 T3 19961111; ES 2092074 T3 19961116; FI 923194 A0 19920710; FI 923194 A 19930113; FR 2678961 A1 19930115; FR 2678961 B1 19931015; GR 3021763 T3 19970228; IE 922269 A1 19930113; JP H05195486 A 19930803; NO 179255 B 19960528; NO 922672 D0 19920707; NO 922672 L 19930113; US 5501771 A 19960326
DOCDB simple family (application)
EP 92401913 A 19920703; AT 92401913 T 19920703; CA 2073610 A 19920710; DE 69213850 T 19920703; DK 92401913 T 19920703; ES 92401913 T 19920703; FI 923194 A 19920710; FR 9108819 A 19910712; GR 960403154 T 19961122; IE 922269 A 19920710; JP 20838592 A 19920713; NO 922672 A 19920707; US 23463294 A 19940428