ECSP982742A - METHODS AND COMPOSITIONS FOR MANUFACTURING DYEED OPHTHALMIC LENSES - Google Patents

METHODS AND COMPOSITIONS FOR MANUFACTURING DYEED OPHTHALMIC LENSES

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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
Application number
Other languages
Spanish (es)
Inventor
Achim Muller
Bernhard Seiferling
John Martin Lally
Deborah Jean Mulcahy
Friedrich Stockinger
Charlotte Lynn Cooper
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to ECSP982742 priority Critical patent/ECSP982742A/en
Publication of ECSP982742A publication Critical patent/ECSP982742A/en

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  • 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.

ECSP982742 1998-11-13 1998-11-13 METHODS AND COMPOSITIONS FOR MANUFACTURING DYEED OPHTHALMIC LENSES ECSP982742A (en)

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)

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