Silicone hydrogels having a structure formed via controlled reaction kinetics
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United States of America Patent
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Jun 12, 2018
Issued Date -
Apr 27, 2017
app pub date -
Jan 5, 2017
filing date -
Dec 23, 2011
priority date (Note) -
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Abstract
The present invention relates to a process comprising the steps of reacting a reactive mixture comprising at least one silicone-containing component, at least one hydrophilic component, and at least one diluent to form an ophthalmic device having an advancing contact angle of less than about 80°; and contacting the ophthalmic device with an aqueous extraction solution at an elevated extraction temperature, wherein said at least one diluent has a boiling point at least about 10° higher than said extraction temperature.
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International Classification(s)
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- C08F:MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONL....
- A61F:FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G02C:SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY ....
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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