EP 0662094 A1 19950712 - PROCESS FOR PRODUCING DYE-CONTAINING POLYVINYL ALCOHOL FOILS AND THEIR USE.
Title (en)
PROCESS FOR PRODUCING DYE-CONTAINING POLYVINYL ALCOHOL FOILS AND THEIR USE.
Title (de)
VERFAHREN ZUR HERSTELLUNG VON FARBSTOFFE ENTHALTENDEN POLYVINYLALKOHOLFOLIEN UND DEREN VERWENDUNG.
Title (fr)
PROCEDE DE PRODUCTION DE FILMS A L'ALCOOL POLYVINYLIQUE CONTENANT DES COLORANTS ET LEUR UTILISATION.
Publication
Application
Priority
- DE 4324991 A 19930726
- EP 9402269 W 19940712
Abstract (en)
[origin: WO9503340A1] A process is disclosed for producing water-resistant, dye-containing polyvinyl alcohol foils and their use as sensor membranes for the reversible optical indication of the pH value of a sample. The foils are produced by direct reaction of a non cross-linked polyvinyl alcohol layer with a reactive dyestuff solution.
IPC 1-7
IPC 8 full level
C08F 8/00 (2006.01); C08F 16/02 (2006.01); C08F 16/06 (2006.01); C08J 5/00 (2006.01); C08J 7/00 (2006.01); G01N 31/22 (2006.01)
CPC (source: EP)
C08F 8/00 (2013.01); G01N 31/221 (2013.01)
Citation (search report)
See references of WO 9503340A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
DE 4324991 A1 19950202; EP 0662094 A1 19950712; JP H08502549 A 19960319; WO 9503340 A1 19950202
DOCDB simple family (application)
DE 4324991 A 19930726; EP 9402269 W 19940712; EP 94924739 A 19940712; JP 50490495 A 19940712