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Photochromic article and method of preparation

  • Huan Kiak Toh (Inventor)
  • , David Andrew Lewis (Inventor)
  • , Raymond K Bubner (Inventor)
  • , Bohdan Grzegorz Gieslinski (Inventor)
  • , Fang Chen (Inventor)

    Research output: Patent

    Abstract

    A process for manufacture of a photochromic polymeric article comprising: providing a fluid polymerisable composition; subjecting the fluid polymerisable composition to a first curing step to provide a solid article of intermediate hardness; contacting the solid article of intermediate hardness with a photochromic substance; and subjecting the solid article of intermediate hardness to a further curing step to increase the hardness and provide a polymeric article imbibed with the photochromic substance.
    Original languageEnglish
    Patent numberUS6811830B2
    Filing date2/04/01
    Publication statusPublished - 2 Nov 2004

    Bibliographical note

    Legal Status: Expired - Lifetime

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