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Light modulating material and method for preparing same

  • US 5,087,387 A
  • Filed: 11/16/1990
  • Issued: 02/11/1992
  • Est. Priority Date: 08/28/1987
  • Status: Expired due to Term
First Claim
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1. A light modulating material comprising a liquid crystal phase formed within a polymer matrix, the polymer matrix comprising:

  • an acrylic resin having active hydrogen groups selected from the group consisting of hydroxy-functional acrylic resins;

    an organometallic material selected from the group consisting of titanates, zirconates and mixtures thereof; and

    a cross-linking agent selected from the group consisting of diisocyanates for reacting with the hydroxy-functional acrylic resin to form a urethane acrylic copolymer;

    the light modulating material being capable of reversibly switching between a substantially translucent state and a substantially transparent state when subjected to an electric or magnetic field.

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