EP 0133699 A2 19850306 - Compositions for imparting temporary wet strength to paper.
Title (en)
Compositions for imparting temporary wet strength to paper.
Title (de)
Zusammensetzungen zur Ausrüstung von Papier mit zeitweiliger Nassstärke.
Title (fr)
Compositions pour pourvoir du papier d'une résistance temporaire à l'état humide.
Publication
Application
Priority
US 52391283 A 19830816
Abstract (en)
A composition for imparting temporary wet strength to paper comprising a solution containing from about one percent to about ten percent by weight of a vinylamide polymer having sufficient glyoxal-reactive amide substituents and -CHOHCHO substituents to be thermosetting, in a solvent selected from the group consisting of water, water-miscible solvents containing free hydroxyl functionality, and mixtures thereof, to which solution has been added a sufficient quantity of a strong base for reaction therewith to adjust the pH of the aqueous solution to a value of from about 8.5 to about 11. Also disclosed is a process for imparting temporary wet strength to paper by application thereto of a wet strengtheningly effective amount of such aqueous composition, and the paper product of such process.
IPC 1-7
IPC 8 full level
D21H 17/39 (2006.01); D21H 21/20 (2006.01)
CPC (source: EP KR)
D21H 17/39 (2013.01 - EP KR); D21H 17/64 (2013.01 - KR); D21H 17/65 (2013.01 - KR); D21H 21/20 (2013.01 - KR); D21H 21/20 (2013.01 - EP)
Designated contracting state (EPC)
AT BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0133699 A2 19850306; EP 0133699 A3 19850403; AU 3192184 A 19850221; KR 850001819 A 19850401
DOCDB simple family (application)
EP 84109360 A 19840807; AU 3192184 A 19840815; KR 840004888 A 19840814