processo para a formação de artigos de silicone hidrogel claros umectáveis
The present invention is a process for forming ophthalmic devices such as contact lenses, comprising the steps of curing a reactive mixture comprising at least one silicone-containing component, at least one hydrophilic component and at least one protonated diluent or protonatable diluent having a H...
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Format: | Patent |
Sprache: | por |
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Zusammenfassung: | The present invention is a process for forming ophthalmic devices such as contact lenses, comprising the steps of curing a reactive mixture comprising at least one silicone-containing component, at least one hydrophilic component and at least one protonated diluent or protonatable diluent having a Hansen solubility parameter, deltap between about 2 and about 7 to form an ophthalmic device having an advancing contact angle of less than about 80°; contacting the ophthalmic device with an aqueous solution which is capable of changing the Hansen solubility parameter, deltap of the protonated or protonatable co-diluent to enhance water solubility and removing said diluent(s) with said aqueous solution. |
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