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:
Jul. 18, 2017
Filed:
Apr. 16, 2015
Essilor International (Compagnie Generale D'optique), Charenton-le-Pont, FR;
Haipeng Zheng, Carrollton, TX (US);
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton-le-Pont, FR;
Abstract
The present invention is drawn to an optical article comprising: (a) a transparent optical polymer substrate, (b) a transparent intermediate abrasion-resistant coating obtained from at least one epoxysilane by a sol-gel process, and (c) a transparent outer coating comprising a polythiolene matrix obtained by curing a liquid monomer mixture comprising at least one polyfunctional thiol and at least one polyfunctional allyl monomer, said cured polythiol-ene matrix having a glass transition temperature comprised in the range from 40° C. to 70° C. and a thickness from 3.5 μm to less than 10 μm. It is also drawn to a method for preparing such an optical article and to a method for repairing scratches in such an optical article by heating.