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An Entity of Type : prov:Entity, within Data Space : webisa.webdatacommons.org associated with source dataset(s)

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prov:value
  • A photochromic synthetic ophthalmic resin lens, comprising a synthetic resin lens body coated with a photochromic surface hard coat having a thickness between about 1 to 30??, the surface hard coat formed from at least one silane compound which has been hydrolyzed, the silane compound having the general formula (1) as follows: ##STR6## wherein R1 is an organic group containing at least one group s
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