Multi-layer articles and methods for producing the same

Patent metadata

Field	Value
Publication number	US-11826990-B2
Application number	US-201816957850-A
Country	US
Kind code	B2
Filing date	Jan 5, 2018
Priority date	Jan 5, 2018
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

The present disclosure provides multi-layer articles that comprise a polyolefin component and a polymer blend attached to the polyolefin component, wherein the polymer blend includes (1) a propylene and α-olefin copolymer in an amount from about 15% to about 70% by weight of the polymer blend, and (2) a carbon monoxide-containing polyolefin-based copolymer in an amount from about 25% to about 85% by weight of the polymer blend. The polymer blend has an extractables fraction with pH higher than 5. Also provided are methods of bonding a first layer comprising polyvinyl chloride to a second layer comprising the disclosed polymer blend.

First claim

The invention claimed is:

1. A multi-layer article comprising:
a polyolefin component; and
a polymer blend attached to the polyolefin component, wherein the polymer blend includes (1) a propylene and α-olefin copolymer in an amount from about 15% to about 55% by weight of the polymer blend, and (2) a carbon monoxide-containing polyolefin-based copolymer comprising an ethylene-n-butyl acrylate-carbon monoxide copolymer in an amount from about 45% to about 83% by weight of the polymer blend, and wherein the polymer blend has an extractable fraction having a pH higher than 5 when an extraction is performed according to Chinese Standard YBB00242004-2015 and the pH is measured in accordance with General Rule 0631 of Chinese Pharmacopoeia 2015, Part 4.

2. The multi-layer article of claim 1 , wherein the polymer blend is attached to the polyolefin component by overmolding.

3. The multi-layer article of claim 1 , wherein the carbon monoxide-containing polyolefin-based copolymer is in an amount from about 45% to about 80% by weight of the polymer blend.

4. The multi-layer article of claim 1 , wherein the carbon monoxide-containing polyolefin-based copolymer is in an amount from about 50% to about 70% by weight of the polymer blend.

5. The multi-layer article of claim 1 , wherein the propylene and α-olefin copolymer is in an amount from about 15% to about 50% by weight of the polymer blend.

6. The multi-layer article of claim 1 , wherein the propylene and α-olefin copolymer is in an amount from about 25% to about 45% by weight of the polymer blend.

7. The multi-layer article of claim 1 , wherein the propylene and α-olefin copolymer has an α-olefin content of from about 1% to about 10% by weight of the copolymer.

8. The multi-layer article of claim 1 comprising a third layer attached to the second layer opposite the first layer, wherein the third layer comprises a polyolefin.

9. A multi-layer article comprising:
a first layer comprising polyvinyl chloride; and
a second layer attached to the first layer, wherein the second layer comprises a polymer blend including (1) a propylene and α-olefin copolymer in an amount from about 15% to about 70% by weight of the polymer blend, and (2) an ethylene-n-butyl acrylate-carbon monoxide copolymer in an amount from about 25% to about 85% by weight of the polymer blend.

10. The multi-layer article of claim 9 , wherein the ethylene-n-butyl acrylate-carbon monoxide copolymer is in an amount from about 45% to about 80% by weight of the polymer blend.

11. The multi-layer article of claim 9 , wherein the ethylene-n-butyl acrylate-carbon monoxide copolymer is in an amount from about 50% to about 70% by weight of the polymer blend.

12. The multi-layer article of claim 9 , wherein the propylene and α-olefin copolymer is in an amount from about 15% to about 50% by weight of the polymer blend.

13. The multi-layer article of claim 9 , wherein the propylene and α-olefin copolymer is in an amount from about 25% to about 45% by weight of the polymer blend.

14. The multi-layer article of claim 9 , wherein the propylene and α-olefin copolymer has an α-olefin content of from about 1% to about 10% by weight of the copolymer.

15. The multi-layer article of claim 9 , wherein the polymer blend includes an ethylene-methyl acrylate copolymer in an amount from about 2% to about 8% by weight of the polymer blend.

16. The multi-layer article of claim 9 comprising a third layer attached to the second layer opposite the first layer, wherein the third layer comprises a polyolefin.

17. A method of bonding a first polyvinyl chloride component to a second polyolefin component, the method comprising:
attaching a polymer blend to the second polyolefin component, wherein the polymer blend includes (1) a propylene and α-olefin copolymer in an amount from about 15% to about 70% by weight of the polymer blend, and (2) a carbon monoxide-containing polyolefin-based copolymer comprising an ethylene-n-butyl acrylate-carbon monoxide copolymer in an amount from about 25% to about 85% by weight of the polymer blend, and wherein the polymer blend has an extractable fraction having a pH higher than 5 when an extraction is performed according to Chinese Standard YBB00242004-2015 and the pH is measured in accordance with General Rule 0631 of Chinese Pharmacopoeia 2015, Part 4; and
solvent bonding the first polyvinyl chloride component to the polymer blend.

18. The method of claim 17 , wherein the first polyvinyl chloride component and the polymer blend are autoclave bonded.

19. The method of claim 17 comprising autoclave bonding a third polyolefin component to the second polyolefin component opposite the first polyvinyl chloride component.

Assignees

• Baxter Int
• Baxter Healthcare Sa

Inventors

• Fu Chengjie

Classifications

• B32B27/08 Primary

  of synthetic resin · CPC title

• B32B7/04

  Interconnection of layers · CPC title

• B32B27/304

  comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF · CPC title

• B32B27/308 Primary

  comprising acrylic (co)polymers · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title