Composition, in particular a blocking agent composition for fixing blanks to ophthalmic or optical lenses
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United States of America Patent
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May 17, 2016
Grant Date -
Aug 16, 2012
app pub date -
Aug 12, 2010
filing date -
Aug 14, 2009
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Abstract
The present invention relates to a composition, in particular a blocking agent composition, in particular for fixing blanks for ophthalmic and/or optical lenses, preferably plastics material-based ophthalmic spectacle glass blanks. The composition comprises a mixture containing (a) at least one polyol (polyalcohol) and (b) at least one organic polyester. In addition, the present invention relates to a method for producing a composite structure, which comprises a carrier having a blank fixed thereon, and the composite structure as such. Furthermore, the present invention relates to a method for producing spectacle glass, in particular plastics material-based spectacle glass, and the spectacle lenses that can be obtained therefrom. Finally, the present invention relates to the use of the composition according to the invention in the production of ophthalmic and optical lenses, and for fixing the blank to a carrier.
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