METHOD FOR PRODUCING DYED PLASTIC LENS

PROBLEM TO BE SOLVED: To provide a method for producing a dyed plastic lens which uses a metal-containing dye, which is difficult to dye a plastic lens by the conventional methods, can be uniformly dyed and is excellent in weather resistance.SOLUTION: In a method for producing a dyed plastic lens, a...

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Bibliographic Details
Main Author MISHINA MISA
Format Patent
LanguageEnglish
Published 04.10.2012
Subjects
CONTACT LENSES
OPTICS
PHYSICS
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
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Summary:PROBLEM TO BE SOLVED: To provide a method for producing a dyed plastic lens which uses a metal-containing dye, which is difficult to dye a plastic lens by the conventional methods, can be uniformly dyed and is excellent in weather resistance.SOLUTION: In a method for producing a dyed plastic lens, a dyeing solution that contains a metal-containing dye, an amphipathic solvent and water and has a pH value of 3.0-6.5 at 25°C is brought into contact with a plastic lens to perform dyeing under the conditions of temperature 90-140°C and pressure 0.5-5.0 MPa.
Bibliography:Application Number: JP20120035681