EP 0013969 A1 19800806 - Process for producing a paper having a high dry-strength and a low wet-strength.
Title (en)
Process for producing a paper having a high dry-strength and a low wet-strength.
Title (de)
Verfahren zur Herstellung von Papier mit hoher Trockenfestigkeit und niedriger Nassfestigkeit.
Title (fr)
Procédé de fabrication de papier à résistance élevée à l'état sec et à faible résistance à l'état humide.
Publication
Application
Priority
DE 2903218 A 19790127
Abstract (en)
[origin: ES8105058A2] A process for the manufacture of paper having a high dry strength and a low wet strength, by treating the surface of the paper with an aqueous solution of an alkali metal and/or alkaline earth metal salt of a polymer of (a) from 91 to 100% by weight of acrylic acid and/or methacrylic acid and (b) from 0 to 9% by weight of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, vinyl acetate, maleic anhydride, diisobutylene, an ester of acrylic acid and/or an ester of methacrylic acid, which has a viscosity of from 5 to 100 mPas in 2% strength aqueous solution at 20 DEG C., and drying the impregnated paper. The polymer is generally employed in an amount of from 1 to 4% by weight, based on dry paper, and increases the dry strength of the paper without substantially increasing the wet strength.
Abstract (de)
Behandlung der Oberfläche eines Papiers mit wasserlöslichen Alkali- und/oder Erdalkalisalzen von Polymerisaten aus a) 91 bis 100 Gew.% Acrylsäure und/oder Methacrylsäure und b) 0 bis 9 Gew.% Acrylnitril, Methacrylnitril, Acrylamid, Methacrylamid, Vinylacetat, Maleinsäureanhydrid, Diisobuten, Acrylsäure- und/oder Methacrylsäureester in einer Menge von 1 bis 4 Gew.%, bezogen auf trokkenes Papier.
IPC 1-7
IPC 8 full level
D21H 17/43 (2006.01); D21H 19/20 (2006.01)
CPC (source: EP US)
D21H 17/43 (2013.01 - EP US); Y10T 428/31895 (2015.04 - EP US); Y10T 428/31906 (2015.04 - EP US)
Citation (search report)
Designated contracting state (EPC)
AT BE CH DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0013969 A1 19800806; EP 0013969 B1 19820922; AT E1591 T1 19821015; AU 5489880 A 19800731; AU 553980 B2 19860731; CA 1140819 A 19830208; DE 2903218 A1 19800807; DE 3060860 D1 19821104; ES 488034 A0 19810401; ES 8105058 A2 19810401; FI 64964 B 19831031; FI 64964 C 19840210; FI 800072 A 19800728; JP S55103393 A 19800807; NO 157186 B 19871026; NO 157186 C 19880203; NO 800183 L 19800728; US 4294873 A 19811013
DOCDB simple family (application)
EP 80100302 A 19800122; AT 80100302 T 19800122; AU 5489880 A 19800124; CA 342176 A 19791218; DE 2903218 A 19790127; DE 3060860 T 19800122; ES 48803480 A 19800125; FI 800072 A 19800110; JP 787680 A 19800128; NO 800183 A 19800125; US 10931580 A 19800103