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Coating composition and method of making and using the same

  • US 9,944,822 B2
  • Filed: 10/06/2010
  • Issued: 04/17/2018
  • Est. Priority Date: 10/06/2010
  • Status: Active Grant
First Claim
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1. A method of making an article, the method comprisingproviding an aqueous silica nano-particle composition,providing an alkaline pH stable polymer latex dispersion;

  • mixing the aqueous silica nano-particle composition with the polymer latex dispersion to create a mixture comprising an aqueous continuous liquid phase comprising at least 50% by weight of water,adjusting the pH of the mixture to less than 6 to form core-shell particles and create a coating composition,coating the surface of a substrate with the coating composition;

    heating the coated substrate to at least 300°

    C.,wherein the coating composition has a pH of less than 6,wherein the coating composition is capable of regenerating the polymer latex dispersion and the silica nano-particle composition upon raising the pH of the coating composition, andwherein the coating on the substrate is antireflecting after the heating step.

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