公开(公告)号：US20190315718A1

公开(公告)日：2019-10-17

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.