PLASTIC MOLDING

PURPOSE:To improve uneven dyeing occurring in the unsmooth area of the titled molding, by subjecting a cast product of a diethylene glycol bisallylcarbonate composition to a specified treatment and then coating the treated molding with a dyeable composition. CONSTITUTION:A plastic molding having par...

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Bibliographische Detailangaben
Hauptverfasser:	TANIGUCHI TAKASHI, MIO JIROU
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON CONTACT LENSES DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM DYEING OR PRINTING TEXTILES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR GENERAL PROCESSES OF COMPOUNDING LAUNDERING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To improve uneven dyeing occurring in the unsmooth area of the titled molding, by subjecting a cast product of a diethylene glycol bisallylcarbonate composition to a specified treatment and then coating the treated molding with a dyeable composition. CONSTITUTION:A plastic molding having partial unsmooth surface, obtained by cast-polymerizing a composition consisting mainly of diethylene glycol bisallylcarbonate is treated with activated gas, ionizing radiation or actinic light. Then, at least part of the surface of this plastic molding is coated with a dyeable coating composition. As the moldings having partial unsmooth surfaces, there can be mentioned, for example, those having a step portion or an edge portion, and especially, in case of part of spectaclc lenses, unsmooth portions such as step portions are required for the sake of their functions. Examples of such a lense include moldings such as multifocal lenses and lenticular lenses for cataract patients.