US 12,253,703 B2
Reddening-resistant layer
Jin Seok Byun, Daejeon (KR); Yeong Rae Chang, Daejeon (KR); Na Young Shin, Daejeon (KR); Jae Hoon Shim, Daejeon (KR); and Kyun Il Rah, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/441,675
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jan. 31, 2020, PCT No. PCT/KR2020/001471
§ 371(c)(1), (2) Date Sep. 21, 2021,
PCT Pub. No. WO2020/204340, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 10-2019-0037454 (KR), filed on Mar. 29, 2019.
Prior Publication US 2022/0146729 A1, May 12, 2022
Int. Cl. G02B 1/10 (2015.01); C08J 5/18 (2006.01); C08K 7/22 (2006.01); G02B 5/30 (2006.01); B32B 3/26 (2006.01); C08K 7/26 (2006.01); G02B 1/11 (2015.01)
CPC G02B 5/305 (2013.01) [C08J 5/18 (2013.01); C08K 7/22 (2013.01); B32B 3/26 (2013.01); C08J 2333/00 (2013.01); C08K 7/26 (2013.01); C08K 2201/003 (2013.01); G02B 1/10 (2013.01); G02B 1/11 (2013.01); G02B 5/30 (2013.01); G02B 2207/107 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A reddening-resistant layer that is a void-containing layer or that comprises the void-containing layer,
wherein the void-containing layer has reflectance of 2% or more with respect to light having a wavelength of from 800 nm to 1,300 nm,
wherein the void-containing layer comprises a binder and hollow particles,
wherein the binder comprises a polymer derived from a polyfunctional acrylate having 2 to 10 polymerizable functional groups, and
wherein the hollow particles have a D10 particle diameter in a range from 25 to 50 nm, a D50 particle diameter in a range from 50 to 95 nm and a D90 particle diameter in a range from 100 nm to 200 nm in a weight cumulative curve of particle size distribution.