US 12,319,862 B2
Method for preparing a coated article
Meng He, South Elgin, IL (US); Anil Kumar, Murrysville, PA (US); Brad S. Veldkamp, Allison Park, PA (US); and Robin Lee Evans, Denton, TX (US)
Assigned to Transitions Optical, Ltd., Tuam (IE)
Appl. No. 18/035,977
Filed by Transitions Optical, Ltd., Tuam (IE)
PCT Filed Nov. 10, 2020, PCT No. PCT/EP2020/081615
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2022/100815, PCT Pub. Date May 19, 2022.
Prior Publication US 2023/0416609 A1, Dec. 28, 2023
Int. Cl. C09K 19/60 (2006.01); C09K 19/54 (2006.01); G02B 1/04 (2006.01)
CPC C09K 19/60 (2013.01) [C09K 19/54 (2013.01); G02B 1/041 (2013.01); C09K 2219/03 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for preparing a coated article, the method comprising:
(a) providing a substrate;
(b) applying a photo-polymerizable coating composition to at least a portion of the substrate, the photo-polymerizable coating composition comprising:
(1) a photo-polymerizable anisotropic material,
(2) a photoinitiator, and
(3) a material selected from the group consisting of a photochromic compound, a photochromic-dichroic compound, and mixtures thereof;
(c) ordering the anisotropic material present in the photo-polymerizable coating composition; and
(d) exposing the ordered photo-polymerizable coating composition of (c) to a light emitting diode light source having a peak emission wavelength ranging from 385 to 460 nanometers to cure the photo-polymerizable coating composition to form a through-cured coating,
wherein the photoinitiator is capable of activation at the peak emission wavelength of the light emitting diode light source, and
wherein the photoinitiator is selected from the group consisting of phosphine based photoinitiators, dibenzoyl diethylgermane, and mixtures thereof.