Colorants for use in tinted contact lenses and methods for...

Details Colorants for use in tinted contact lenses and methods for... Colorants for use in tinted contact lenses and methods for...

B - Operations, Transporting

29

D

B29D 11/00 (2006.01) C08F 265/04 (2006.01) C09B 69/10 (2006.01) D06P 1/00 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2669955

The present invention relates to compositions comprising a light absorbing prepolymer having a molecular weight of between about 7,000 and about 100,000 and polymeric units derived from and least one reactive colorant and monomers selected from the group consisting of hydrophilic monomers, hydrophobic monomers and mixtures thereof. The compositions of the present invention are useful for the manufacture of ophthalmic devices, including contact lenses.

La présente invention concerne des compositions contenant un prépolymère absorbant la lumière ayant un poids moléculaire compris entre 7 000 environ et 100 000 environ et des unités polymères dérivées d'au moins un colorant réactif et des monomères sélectionnés parmi le groupe constitué par les monomères hydrophiles, les monomères hydrophobes et leurs mélanges. Les compositions de la présente invention sont utiles dans la fabrication de dispositifs ophtalmologiques, comprenant les lentilles de contact.

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