	US 12,286,527 B2
	Ethylene-vinyl alcohol copolymer resin particle composition, ethylene-vinyl alcohol copolymer film formed therefrom, and multilayer structure
Chih Chieh Liang, Taipei (TW); and Wen Hsin Lin, Taipei (TW)
Assigned to CHANG CHUN PETROCHEMICAL CO., LTD., Taipei (TW)
Appl. No. 18/571,191
Filed by CHANG CHUN PETROCHEMICAL CO., LTD., Taipei (TW)
PCT Filed Jun. 16, 2022, PCT No. PCT/CN2022/099166 § 371(c)(1), (2) Date Dec. 15, 2023, PCT Pub. No. WO2022/262811, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. 202110666690.4 (CN), filed on Jun. 16, 2021; application No. 202110666705.7 (CN), filed on Jun. 16, 2021; application No. 202110666706.1 (CN), filed on Jun. 16, 2021; application No. 202110668489.X (CN), filed on Jun. 16, 2021; and application No. 202110668496.X (CN), filed on Jun. 16, 2021.
Prior Publication US 2024/0279454 A1, Aug. 22, 2024
Int. Cl. C08L 29/04 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); C08J 5/18 (2006.01); C08L 23/0846 (2025.01)

CPC C08L 29/04 (2013.01) [B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); C08J 5/18 (2013.01); C08L 23/0846 (2013.01); B32B 2250/05 (2013.01); B32B 2250/246 (2013.01); B32B 2250/40 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/738 (2013.01); C08J 2329/04 (2013.01); C08J 2429/04 (2013.01); C08L 2203/16 (2013.01); C08L 2205/14 (2013.01)]

16 Claims

1. An ethylene-vinyl alcohol copolymer (EVOH) resin particle composition, comprising:

a first EVOH resin particle having a surface valley void volume (Vvv) of 0.00003˜2 μm³/μm²; and

a second EVOH resin particle having a surface valley void volume (Vvv) of 0.00005˜10 μm³/μm², wherein the first EVOH resin particle has an ethylene content of 36˜50 mole % and the second EVOH resin particle has an ethylene content of 20˜35 mole %,

wherein the surface valley void volume (Vvv) of the second EVOH resin particle is greater than the surface valley void volume (Vvv) of the first EVOH resin particle.