Back to results
US 11,613,642 B2Granted
Ethylene-vinyl alcohol copolymer composition, pellets, and multilayer structure
AssigneeMitsubishi Chemical Corporation
InventorsShintaro Usui, Daichi Nishimura, Minako Ikeshita
Life of this patent
Estimating the term…
Abstract
An ethylene-vinyl alcohol copolymer composition contains: (A) an ethylene-vinyl alcohol copolymer including two or more types of ethylene-vinyl alcohol copolymers having different ethylene structural unit contents; and (B) an iron compound; wherein the iron compound (B) is present in an amount of 0.01 to 5 ppm on a metal basis based on the weight of the ethylene-vinyl alcohol copolymer composition. The ethylene-vinyl alcohol copolymer composition is substantially free from coloration and excellent in heat stability.
Claims5
An ethylene-vinyl alcohol copolymer composition comprising:
- (A) an ethylene-vinyl alcohol copolymer comprising:
- (A1) an ethylene-vinyl alcohol copolymer having an ethylene structural unit content of less than 35 mol %;
- and
- (A2) an ethylene-vinyl alcohol copolymer having an ethylene structural unit content of not less than 35 mol %;
- and
- (B) an iron compound;
- wherein the ethylene-vinyl alcohol copolymer (A) has an ethylene structural unit content of 20 to 60 mol %, and
- wherein the iron compound (B) is present in an amount of 0.01 to 1 ppm on a metal basis based on a weight of the ethylene-vinyl alcohol copolymer composition.
5 more elements
Dependencies are inferred from the claim text.