Method of producing a substrate which is coated with a mesoporous layer and use thereof in ophthalmic optics

US8182866B2 · kind B2 · utility

Assignee

• Essilor International (Compagnie Generale d'Optique) · FR

Inventors

• Muriel Matheron · Chambéry, FR
• John Biteau · Dallas, US
• Jean-Paul Cano · Charenton-le-Pont, FR
• Jean-Pierre Boilot · Meudon, FR
• Thierry Gacoin · Les Ulis, FR

Key dates

• Filing date: May 3, 2005
• Grant date: May 22, 2012
• Expiry date: Jan 6, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D183/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method of producing a substrate which is coated with a mesoporous layer and to the use thereof in ophthalmic optics. The inventive method comprises the following steps comprising: preparing a precursor sol containing (i) a precursor agent that is selected from compounds having formula M(X)4 (I), in which X is a hydrolysable group and M represents silicon or a tetravalent metal and mixtures thereof, (ii) at least one organic solvent, (iii) at least one pore-forming agent and (iv) water; depositing a film of the precursor sol on a main surface of the substrate; optionally consolidating the mesoporous structure of the deposited film; eliminating the pore-forming agent; and recovering the substrate coated with the mesoporous layer. The method is characterized in that: (i) the pore-forming agent is eliminated at a temperature of less than or equal to 150° C.; and (ii) the method comprises a step involving the introduction of at least one reactive agent bearing at least one hydrophobic group, before the deposition step and/or after said step.