US 11,884,806 B2
Ethylene-vinyl alcohol copolymer resin composition, and multilayer structure
Kota Inoue, Osaka (JP); Honoka Hashimoto, Osaka (JP); and Nobuaki Sato, Osaka (JP)
Assigned to MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP)
Filed by Mitsubishi Chemical Corporation, Tokyo (JP)
Filed on Jun. 5, 2019, as Appl. No. 16/432,288.
Application 16/432,288 is a continuation of application No. PCT/JP2017/042811, filed on Nov. 29, 2017.
Claims priority of application No. 2016-246507 (JP), filed on Dec. 20, 2016; application No. 2016-246509 (JP), filed on Dec. 20, 2016; application No. 2016-246510 (JP), filed on Dec. 20, 2016; application No. 2016-246511 (JP), filed on Dec. 20, 2016; application No. 2017-045641 (JP), filed on Mar. 10, 2017; application No. 2017-045643 (JP), filed on Mar. 10, 2017; application No. 2017-045644 (JP), filed on Mar. 10, 2017; and application No. 2017-045645 (JP), filed on Mar. 10, 2017.
Prior Publication US 2019/0292359 A1, Sep. 26, 2019
Int. Cl. C08L 29/04 (2006.01); C08K 3/38 (2006.01); C08K 5/00 (2006.01); C08K 5/01 (2006.01); C08K 5/09 (2006.01); C08F 8/00 (2006.01)
CPC C08L 29/04 (2013.01) [C08F 8/00 (2013.01); C08K 3/38 (2013.01); C08K 5/005 (2013.01); C08K 5/01 (2013.01); C08K 5/09 (2013.01); C08K 2003/387 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An ethylene-vinyl alcohol copolymer resin composition comprising:
an ethylene-vinyl alcohol copolymer; and
from 5 ppm to 500 ppm of a cinnamic acid component based on a weight of the ethylene-vinyl alcohol copolymer resin composition;
wherein the ethylene-vinyl alcohol copolymer comprises monomer units including at least an ethylene unit and a vinyl alcohol unit, and a carboxylic acid group and a lactone ring present in terminal structures thereof, and a ratio (Y/Z) of a lactone ring content (Y) to a sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) is not less than 55% in a molar ratio.