Ethylene-vinyl alcohol copolymer composition, pellets, and multilayer structure
US-2020087504-A1 · Mar 19, 2020 · US
Ethylene-vinyl alcohol copolymer composition with improved oxygen barrier properties
US11124642B1 · US · B1
| Field | Value |
|---|---|
| Publication number | US-11124642-B1 |
| Application number | US-202117205324-A |
| Country | US |
| Kind code | B1 |
| Filing date | Mar 18, 2021 |
| Priority date | Mar 18, 2021 |
| Publication date | Sep 21, 2021 |
| Grant date | Sep 21, 2021 |
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Abstract
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Provided is an ethylene-vinyl alcohol copolymer composition having improved oxygen barrier properties, wherein the ethylene-vinyl alcohol copolymer composition comprises an ethylene-vinyl alcohol copolymer; and a manganese content of about 0.01 ppm to 0.49 ppm.
First claim
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The invention claimed is: 1. An ethylene-vinyl alcohol copolymer composition comprising: an ethylene-vinyl alcohol copolymer; and a manganese content of about 0.01 ppm to 0.49 ppm. 2. The ethylene-vinyl alcohol copolymer composition of claim 1 , wherein the ethylene content of the ethylene-vinyl alcohol copolymer is about 24 mole % to about 48 mole %. 3. The ethylene-vinyl alcohol copolymer composition of claim 2 , wherein the ethylene content of the ethylene-vinyl alcohol copolymer is about 24 mole % to about 35 mole %. 4. The ethylene-vinyl alcohol copolymer composition of claim 3 , wherein a solution comprising 2.5 g of the ethylene-vinyl alcohol copolymer composition dissolved in 84 g of an aqueous methanol solution of 60 wt. % methanol has a pH of 5.1 to 7.2. 5. The ethylene-vinyl alcohol copolymer composition of claim 4 , wherein the solution has a pH of 5.3 to 6.9. 6. The ethylene-vinyl alcohol copolymer composition of claim 2 , wherein the ethylene content of the ethylene-vinyl alcohol copolymer is about 36 mole % to about 48 mole %. 7. The ethylene-vinyl alcohol copolymer composition of claim 6 , wherein a solution comprising 2.5 g of the ethylene-vinyl alcohol copolymer composition dissolved in 84 g of an aqueous methanol solution of 80 wt. % methanol has a pH of 5.1 to 7.2. 8. The ethylene-vinyl alcohol copolymer composition of claim 7 , wherein the solution has a pH of 5.3 to 6.9. 9. The ethylene-vinyl alcohol copolymer composition of claim 1 further comprising a boron content of about 50 ppm to 300 ppm. 10. The ethylene-vinyl alcohol copolymer composition of claim 1 further comprising an alkali metal content of about 50 ppm to 400 ppm. 11. The ethylene-vinyl alcohol copolymer composition of claim 1 , wherein the ethylene-vinyl alcohol copolymer has a degree of saponification of 99.5 mole % or more. 12. The ethylene-vinyl alcohol copolymer composition of claim 1 , wherein the manganese content of ethylene-vinyl alcohol copolymer composition is about 0.01 ppm to 0.38 ppm. 13. The ethylene-vinyl alcohol copolymer composition of claim 1 , wherein the melting point temperature of ethylene-vinyl alcohol copolymer is from 150° C. to 200° C. 14. The ethylene-vinyl alcohol copolymer composition of claim 1 , wherein the hygroscopicity of ethylene-vinyl alcohol copolymer composition is less than 1 wt. %. 15. An ethylene-vinyl alcohol copolymer composition comprising: (a) an ethylene-vinyl alcohol copolymer having an ethylene content of about 24 mole % to about 48 mole %, and a degree of saponification of 99.5 mole % or more; (b) a manganese content of about 0.01 ppm to 0.49 ppm; (c) a boron content of about 50 ppm to 300 ppm; and (d) an alkali metal content of about 50 ppm to 400 ppm.
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- What does patent US11124642B1 cover?
- Provided is an ethylene-vinyl alcohol copolymer composition having improved oxygen barrier properties, wherein the ethylene-vinyl alcohol copolymer composition comprises an ethylene-vinyl alcohol copolymer; and a manganese content of about 0.01 ppm to 0.49 ppm.
- Who is the assignee on this patent?
- Chang Chun Petrochemical Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08K3/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 21 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).