EP 0862671 B1 20000405 - PROCESS FOR PRESERVING PAPER
Title (en)
PROCESS FOR PRESERVING PAPER
Title (de)
VERFAHREN ZUM KONSERVIEREN VON PAPIER
Title (fr)
PROCEDE DE CONSERVATION DE PAPIER
Publication
Application
Priority
- DE 19543707 A 19951123
- EP 9605176 W 19961122
Abstract (en)
[origin: US6071475A] PCT No. PCT/EP96/05176 Sec. 371 Date May 21, 1998 Sec. 102(e) Date May 21, 1998 PCT Filed Nov. 22, 1996 PCT Pub. No. WO97/19224 PCT Pub. Date May 29, 1997A process is disclosed for preserving paper involving the following steps: (a) a plurality of paper layers in contact with one another at least in regions is simultaneously brought into contact with a preservative fluid containing polycondensates based on one or more hydrolytic polycondensation-capable compounds of elements M of main groups III-V and sub-groups II-IV of the Periodic Table; in said polycondensates, at least one organic group (G) with at least two carbon atoms and for each carbon atom at least one atom selected from hydrogen or fluorine and without polar substituents is bound, either directly via one of the carbon atoms or via a connecting group A, to at least 0.1% of the central atoms M; and (b) the paper thus treated with the preservative fluid is dried and/or hardened.
IPC 1-7
IPC 8 full level
B41M 7/00 (2006.01); B44D 7/00 (2006.01); D21H 25/18 (2006.01)
CPC (source: EP US)
D21H 25/18 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
US 6071475 A 20000606; AT E191525 T1 20000415; DE 19543707 A1 19970528; DE 59604912 D1 20000511; EP 0862671 A1 19980909; EP 0862671 B1 20000405; ES 2144275 T3 20000601; GR 3033765 T3 20001031; PT 862671 E 20000929; WO 9719224 A1 19970529
DOCDB simple family (application)
US 6890598 A 19980521; AT 96941012 T 19961122; DE 19543707 A 19951123; DE 59604912 T 19961122; EP 9605176 W 19961122; EP 96941012 A 19961122; ES 96941012 T 19961122; GR 20000401461 T 20000623; PT 96941012 T 19961122