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:
Nov. 25, 2025
Filed:
Jun. 02, 2021
Essilor International, Charenton-le-pont, FR;
Laurie Marion, Bangkok, TH;
Pierre Fromentin, Bangkok, TH;
Essilor International, Charenton-le-pont, FR;
Abstract
The invention relates to a polymerizable composition intended to form a polymer composition for an optical material, such as a substrate of an ophthalmic lens, to this polymer composition obtained by polymerizing the polymerizable composition and having a refractive index of from 1.54 to 1.58, to an ophthalmic lens comprising this polymer composition and to a method for manufacturing this optical material. The polymerizable composition has a refractive index of from 1.54 to 1.58, the polymerizable composition comprising: —at least one non-aromatic polyisocyanate compound comprising at least two —NCO groups; —at least one non-aromatic polythiol compound comprising at least two —SH groups; —at least one polyol, According to the invention, said at least one polyol comprises a polyether polyol.