ECSP982742A - METHODS AND COMPOSITIONS FOR MANUFACTURING DYEED OPHTHALMIC LENSES - Google Patents
METHODS AND COMPOSITIONS FOR MANUFACTURING DYEED OPHTHALMIC LENSESInfo
- Publication number
- ECSP982742A ECSP982742A ECSP982742A ECSP982742A EC SP982742 A ECSP982742 A EC SP982742A EC SP982742 A ECSP982742 A EC SP982742A EC SP982742 A ECSP982742 A EC SP982742A
- Authority
- EC
- Ecuador
- Prior art keywords
- mold
- tinted
- polymer precursor
- ophthalmic molded
- pigment
- Prior art date
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
La invención se refiere a un proceso para la fabricación de articulos moldeados oftálmicos teñidos, el cual comprende los pasos de: a) proporcionar un precursor de polímero soluble en agua que tenga grupos reticulables o polimerizables; b) proporcionar una dispersión de pigmento que comprenda un pigmento inorgánico u orgánico, y un agente de dispersión; c) mezclar la dispersión del pigmento con el precursor de polímero para formar una mezcla de prepolimerización teñida; d) e) aplicar radiación a la mezcla de prpolimerización teñida en el molde, reticulando o polimerizando de esta manera el precursor del polímero, y atrapando el pigmento adentro de la red polimérica del artículo moldeado oftálmico resultante, y f) abrir el molde, de tal manera que se pueda remover el artículo moldeado oftálmico del molde. De acuerdo con el proceso, se preparan artículos moldeados oftálmicos teñidos, particularmente lentes de contacto blandos teñidos en todo el cuerpo, que tienen mejores propiedades, con una eficiencia mejorada. d) dosificar la mezcla de prepolimerización teñida en un molde.The invention relates to a process for the manufacture of tinted ophthalmic molded articles, which comprises the steps of: a) providing a water soluble polymer precursor having crosslinkable or polymerizable groups; b) providing a pigment dispersion comprising an inorganic or organic pigment, and a dispersing agent; c) mixing the pigment dispersion with the polymer precursor to form a tinted prepolymerization mixture; d) e) applying radiation to the dyed polymerization mixture in the mold, thereby crosslinking or polymerizing the polymer precursor, and trapping the pigment within the polymeric network of the resulting ophthalmic molded article, and f) opening the mold, thereby so that the ophthalmic molded article can be removed from the mold. According to the process, tinted ophthalmic molded articles are prepared, particularly full body tinted soft contact lenses, which have better properties, with improved efficiency. d) dosing the stained prepolymerization mixture into a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ECSP982742 ECSP982742A (en) | 1998-11-13 | 1998-11-13 | METHODS AND COMPOSITIONS FOR MANUFACTURING DYEED OPHTHALMIC LENSES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ECSP982742 ECSP982742A (en) | 1998-11-13 | 1998-11-13 | METHODS AND COMPOSITIONS FOR MANUFACTURING DYEED OPHTHALMIC LENSES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ECSP982742A true ECSP982742A (en) | 1999-04-21 |
Family
ID=42043661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ECSP982742 ECSP982742A (en) | 1998-11-13 | 1998-11-13 | METHODS AND COMPOSITIONS FOR MANUFACTURING DYEED OPHTHALMIC LENSES |
Country Status (1)
| Country | Link |
|---|---|
| EC (1) | ECSP982742A (en) |
-
1998
- 1998-11-13 EC ECSP982742 patent/ECSP982742A/en unknown
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