公开(公告)号：US10730855B2

公开(公告)日：2020-08-04

申请号：US16471050

申请日：2018-01-04

Applicant: Essilor International

Inventor： Claudine Biver ,  Fabien Berit-Debat ,  Samuel Archambeau ,  Christopher Gabbutt ,  Stuart Aiken ,  Bernard Mark Heron ,  Thomas David Broadbent

IPC: C07D401/14 ,  C09K9/02

Abstract: The present invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic compounds comprising one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.