	US 12,252,608 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. 18/571,166
Filed by CHANG CHUN PETROCHEMICAL CO., LTD., Taipei (TW)
PCT Filed Jun. 16, 2022, PCT No. PCT/CN2022/099172 § 371(c)(1), (2) Date Dec. 15, 2023, PCT Pub. No. WO2022/262813, 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 2024/0287298 A1, Aug. 29, 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 23/08 (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 core void volume (Vvc) of 0.002˜14 um³/um², and the first EVOH resin particle has an ethylene content of 36˜50 mole %, and

a second EVOH resin particle having a surface core void volume (Vvc) of 0.010˜48 um³/um², and

the second EVOH resin particle has an ethylene content of 20˜35 mole %;

wherein the second EVOH resin particle has a greater Vvc than the first EVOH resin particle.