	US 12,275,217 B2
	Decorative sheet and decorative material using same
Satoshi Furuta, Asaka (JP); Osamu Goto, Yoshikawa (JP); Toshiyuki Sakai, Tsukuba (JP); and Mayuko Komurasaki, Misato (JP)
Assigned to DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
Appl. No. 17/762,465
Filed by DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
PCT Filed Sep. 23, 2020, PCT No. PCT/JP2020/035790 § 371(c)(1), (2) Date Mar. 22, 2022, PCT Pub. No. WO2021/065620, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 2019-180105 (JP), filed on Sep. 30, 2019.
Prior Publication US 2022/0347983 A1, Nov. 3, 2022
Int. Cl. B32B 27/08 (2006.01); B32B 3/30 (2006.01); B32B 7/12 (2006.01); B32B 27/16 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); C09D 175/16 (2006.01)

CPC B32B 27/08 (2013.01) [B32B 3/30 (2013.01); B32B 7/12 (2013.01); B32B 27/16 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); C09D 175/16 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2264/1022 (2020.08); B32B 2307/584 (2013.01); B32B 2307/7246 (2013.01); B32B 2307/732 (2013.01); B32B 2451/00 (2013.01)]

14 Claims

1. A decorative sheet comprising:

a substrate; and

a surface protective layer on the substrate, wherein the surface protective layer is a layer obtained by crosslinking and curing a composition A containing an ionizing radiation-curable resin composition and a radical scavenger;

wherein:

the radical scavenger contains:

a radical scavenger i which includes an ethylenic double bond polymerizable with the ionizing radiation-curable resin composition; and

a radical scavenger ii which does not include an ethylenic double bond polymerizable with the ionizing radiation-curable resin composition;

a content of the radical scavenger in the composition A is not less than 0.5 parts by mass and less than 10.0 parts by mass based on 100 parts by mass of the ionizing radiation-curable resin composition; and

a water vapor transmission rate of the decorative sheet when measured in accordance with Testing Methods for Determination of the Water Vapor Transmission Rate of Moisture-Proof Packaging Materials (Dish Method) defined in JIS Z0208:1976 is not less than 0.75 g/m²·24 h and not more than 45 g/m²·24h.