	US 11,994,704 B2
	Hologram medium
Seokhoon Jang, Daejeon (KR); Jinseok Byun, Daejeon (KR); Heon Kim, Daejeon (KR); Se Hyun Kwon, Daejeon (KR); and Yeongrae Chang, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 16/972,547
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Sep. 11, 2019, PCT No. PCT/KR2019/011874 § 371(c)(1), (2) Date Dec. 4, 2020, PCT Pub. No. WO2020/067668, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 10-2018-0115322 (KR), filed on Sep. 27, 2018.
Prior Publication US 2021/0239894 A1, Aug. 5, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 5/32 (2006.01); C08L 33/10 (2006.01); G03F 7/075 (2006.01); G03H 1/02 (2006.01)

CPC G02B 5/32 (2013.01) [C08L 33/10 (2013.01); G03F 7/075 (2013.01); G03H 2001/0264 (2013.01); G03H 2260/12 (2013.01)]

11 Claims

1. A hologram recording medium having one surface with a higher surface energy than a polymer resin layer of a base substrate containing at least one polymer selected from the group consisting of triacetyl cellulose, alicyclic olefin polymer and polyethylene terephthalate,

wherein the hologram recording medium has one surface with a surface energy of at least 50 mN/m,

wherein the hologram recording medium comprises a polymer layer which

includes a cross-linked product between a polymer matrix including a (meth)acrylate-based (co)polymer having a silane-based functional group in a branched chain, and a silane crosslinking agent; and a photoreactive monomer.