EP 1078284 A1 20010228 - METHOD FOR COLOURING FLEXIBLE HYDROPHILIC CONTACT LENSES
Title (en)
METHOD FOR COLOURING FLEXIBLE HYDROPHILIC CONTACT LENSES
Title (de)
VERFAHREN ZUM FÄRBEN VON WEICHEN KONTAKTLINSEN
Title (fr)
PROCEDE DE COLORATION DE LENTILLES DE CONTACT HYDROPHILES SOUPLES
Publication
Application
Priority
- FR 0000102 W 20000119
- FR 9900958 A 19990128
Abstract (en)
[origin: FR2789081A1] The invention concerns a method which consists in contacting the contact lens with an aqueous solution containing a solvent for swelling the polymer material forming the lens, and a colouring agent selected among the azoic complex chromium salts and their mixtures and in removing the lens from the solution. The invention is useful for producing brown coloured contact lenses.
IPC 1-7
IPC 8 full level
B29D 11/00 (2006.01); C08J 7/02 (2006.01); D06P 3/00 (2006.01); D06P 5/00 (2006.01); G02B 1/04 (2006.01); G02C 7/04 (2006.01)
CPC (source: EP)
B29D 11/00317 (2013.01); G02B 1/043 (2013.01)
Citation (search report)
See references of WO 0045198A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
FR 2789081 A1 20000804; FR 2789081 B1 20010420; EP 1078284 A1 20010228; JP 2002535733 A 20021022; NO 20004870 D0 20000928; NO 20004870 L 20000928; WO 0045198 A1 20000803
DOCDB simple family (application)
FR 9900958 A 19990128; EP 00900606 A 20000119; FR 0000102 W 20000119; JP 2000596397 A 20000119; NO 20004870 A 20000928