Method for producing polycarbonate material having excellent solubility and affinity, and contact lens material comprising the same
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United States of America Patent
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Aug 6, 2013
Grant Date -
May 10, 2012
app pub date -
Jul 15, 2009
filing date -
Jul 15, 2009
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Abstract
According to the present invention, a contact lens material being excellent in oxygen permeability and transparency, being capable of undergoing injection molding, having no water content and having flexibility, as well as a contact lens gel material having excellent oxygen permeability and transparency can be provided. The present invention relates to a contact lens material comprising a polycarbonate resin derived from at least two compounds among compounds represented by a general formula (A), a general formula (B) and a general formula (C), a highly polar molecular weight control modifier (chain terminator) and a compound forming a carbonic acid ester, wherein the compound of the general formula (A) is essentially comprised, and to a production method thereof.
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