EP 0239636 A1 19871007 - PROCESS FOR TINTING A HYDROGEL CONTACT LENS.
Title (en)
PROCESS FOR TINTING A HYDROGEL CONTACT LENS.
Title (de)
FÄRBEVERFAHREN FÜR EINE HYDROGELKONTAKTLINSE.
Title (fr)
PROCEDE POUR TEINTER UN VERRE DE CONTACT HYDROGEL.
Publication
Application
Priority
US 78518385 A 19851007
Abstract (en)
[origin: WO8702079A1] A method for tinting a hydrogel contact lens employing a water-soluble leuco ester of a vat dye which is ultimately oxidized to regenerate the original chromophore.
Abstract (fr)
Procédé pour teinter un verre de contact hydrogel, faisant usage d'un leucoester hydrosoluble d'un colorant de cuve qui est ultérieurement oxydé pour régénérer le chromophore d'origine.
IPC 1-7
IPC 8 full level
B29D 11/00 (2006.01); D06P 1/28 (2006.01); D06P 1/92 (2006.01)
CPC (source: EP)
B29D 11/00038 (2013.01); B29D 11/00317 (2013.01); B29D 11/00923 (2013.01); D06P 1/28 (2013.01); D06P 1/928 (2013.01)
Citation (search report)
See references of WO 8702079A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8702079 A1 19870409; AU 6542086 A 19870424; EP 0239636 A1 19871007
DOCDB simple family (application)
US 8602115 W 19861006; AU 6542086 A 19861006; EP 86906568 A 19861006