The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2012
Filed:
May. 03, 2005
Muriel Matheron, Paris, FR;
John Biteau, Treasure Island, FL (US);
Jean-paul Cano, Saint Orens, FR;
Jean-pierre Boilot, Meudon la Foret, FR;
Thierry Gacoin, Bure/Yvette, FR;
Muriel Matheron, Paris, FR;
John Biteau, Treasure Island, FL (US);
Jean-Paul Cano, Saint Orens, FR;
Jean-Pierre Boilot, Meudon la Foret, FR;
Thierry Gacoin, Bure/Yvette, FR;
Essilor International Compagnie Generale d'Optique, Charenton-le-Pont, FR;
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.