US 12,116,468 B2
Composite particles comprising a hydrophobic dye and an amphiphilic block copolymer and use thereof in optical applications
Gabrielle Masone, Halifax (CA); Morrgan Payne, Halifax (CA); Yuan Pang, Halifax (CA); Ian Desmond Conrod, Halifax (CA); William Michael Anthony Curtis, Dartmouth (CA); Nancy Kilcup, Dartmouth (CA); and Roderick Angus Chisholm, Head of Chezzetcook (CA)
Assigned to Coloursmith Labs Inc., Halifax (CA)
Appl. No. 17/614,048
Filed by Coloursmith Labs Inc., Halifax (CA)
PCT Filed May 25, 2020, PCT No. PCT/CA2020/050708
§ 371(c)(1), (2) Date Nov. 24, 2021,
PCT Pub. No. WO2020/237363, PCT Pub. Date Dec. 3, 2020.
Claims priority of provisional application 62/852,535, filed on May 24, 2019.
Prior Publication US 2022/0235197 A1, Jul. 28, 2022
Int. Cl. C08K 5/1545 (2006.01)
CPC C08K 5/1545 (2013.01) 20 Claims
 
1. A contact lens comprising one or more composite particle, the one or more composite particle comprising:
a hydrophobic dye; and
an amphiphilic block copolymer encapsulating the hydrophobic dye,
wherein the hydrophobic dye has an absorbance in the range of from the ultraviolet region to the infrared region of the electromagnetic spectrum providing UV-Vis absorbance to the contact lens.