EP 0582265 A1 19940209 - Process for restoring damaged papier.
Title (en)
Process for restoring damaged papier.
Title (de)
Verfahren zur Wiederverfestigung von geschädigtem Papier.
Title (fr)
Procédé de restauration de papier abîmé.
Publication
Application
Priority
DE 4225780 A 19920804
Abstract (en)
In a process for restoring damaged paper, the aged, acid-damaged fragile paper is treated with a solution containing isocyanates or with an isocyanate vapour, preferably isocyanates having two or more isocyanate groups being used.
Abstract (de)
Verfahren zur Wiederverfestigung von geschädigtem Papier, in welchem das gealterte, säuregeschädigte brüchige Papier mit einer Isocyanate enthaltenden Lösung oder einem Isocyanatdampf behandelt wird, wobei vorzugsweise Isocyanate mit zwei oder mehr Isocyanatgruppen eingesetzt werden.
IPC 1-7
IPC 8 full level
B41M 7/02 (2006.01); D21H 17/08 (2006.01); D21H 25/18 (2006.01)
CPC (source: EP US)
B41M 7/02 (2013.01 - EP US); D21H 17/08 (2013.01 - EP US); D21H 25/18 (2013.01 - EP US); Y10T 428/31993 (2015.04 - EP US)
Citation (search report)
- [PY] EP 0499076 A1 19920819 - BATTELLE INSTITUT E V [DE]
- [A] US 3874898 A 19750401 - MCINNES ALAN DON, et al
- [A] EP 0386436 A2 19900912 - BATTELLE INSTITUT E V [DE]
- [XY] MORAK ET AL.: "Cross-linking of linerboard to reduce stiffness loss. II. Diisocyanates in liquid phase application.", TAPPI, vol. 53, no. 4, April 1970 (1970-04-01), ATLANTA US, pages 652 - 656
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0582265 A1 19940209; DE 4225780 C1 19940105; US 5482781 A 19960109
DOCDB simple family (application)
EP 93112394 A 19930803; DE 4225780 A 19920804; US 33757194 A 19941110