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isa:428009245
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A composition which is preferred for coating a plastic lens contains a high concentration of water-dispersed colloidal silica, a trifunctional oranosilicon compound which is curable after hydrolysis and has the following formula, wherein R7 is an alkyl group having 1 to 4 carbon atoms and R8 is an alkylene group having 1 to 4 carbon atoms, and a curing agent.
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isa:428009245