	US 12,138,891 B2
	Leather-like sheet
Masato Warita, Okayama (JP)
Assigned to KURARAY CO., LTD., Kurashiki (JP)
Appl. No. 17/757,871
Filed by KURARAY CO., LTD., Kurashiki (JP)
PCT Filed Dec. 3, 2020, PCT No. PCT/JP2020/045139 § 371(c)(1), (2) Date Jun. 22, 2022, PCT Pub. No. WO2021/131589, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-235313 (JP), filed on Dec. 25, 2019.
Prior Publication US 2023/0033018 A1, Feb. 2, 2023
Int. Cl. B32B 27/12 (2006.01); B32B 5/02 (2006.01); B32B 7/022 (2019.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B32B 27/40 (2006.01)

CPC B32B 27/12 (2013.01) [B32B 5/022 (2013.01); B32B 7/022 (2019.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/322 (2013.01); B32B 27/40 (2013.01); B32B 2250/03 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2264/0214 (2013.01); B32B 2264/202 (2020.08); B32B 2264/305 (2020.08); B32B 2307/306 (2013.01); B32B 2307/546 (2013.01); B32B 2307/554 (2013.01); B32B 2307/732 (2013.01)]

6 Claims

1. A leather-like sheet, comprising:

a fiber base material;

an intermediate resin layer stacked on one surface of the fiber base material; and

a surface resin layer stacked on the intermediate resin layer,

wherein the surface resin layer comprises a polyether-based polyurethane and spherical fine particles having a heat resistance at 200° C., and a content ratio of the spherical fine particles is 5 to 40 mass %, and

the spherical fine particles has a specific heat of 0.95 KJ/(kg·K) or more, and a particle size D₅₀(median diameter) at a cumulative distribution of 50 vol %, of 2.5 to 10 μm, and a particle size D₁₀at a cumulative distribution of 10 vol % of the spherical fine particles satisfies a condition that a particle size dispersity D₅₀/D₁₀≤3 wherein the spherical fine particles comprise melamine resin-silica composite particles.