Ink formulations and uses thereof

Details Ink formulations and uses thereof Ink formulations and uses thereof

C - Chemistry, Metallurgy

09

D

C09D 11/10 (2006.01) B29D 11/00 (2006.01) C08F 8/00 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2497415

The present invention provides a chemical ink for pad printing a medical device comprising water; a colorant; and a crosslinkable, water-soluble poly(vinyl alcohol). The ink has a viscosity of greater than 50 mPas, and good adhesion to the medical device. Method for printing contact lenses with such ink are also disclosed.

La présente invention concerne une encre chimique pour l'impression par tampon sur un dispositif médical, laquelle comprend : de l'eau ; un colorant ; et un alcool (poly)vinylique. Cette encre présente une viscosité supérieure à 50 mPas et adhère bien au dispositif médical. L'invention concerne également un procédé d'impression sur des lentilles de contact faisant appel à une telle encre.

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