Recycled polyethylene terephthalate compositions, fibers and articles produced therefrom, and methods for producing same

Patent metadata

Field	Value
Publication number	US-10214643-B2
Application number	US-201615175413-A
Country	US
Kind code	B2
Filing date	Jun 7, 2016
Priority date	Sep 30, 2008
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

In one aspect, the invention relates to recycled polyethylene terephthalate compositions, fibers and articles produced therefrom, and methods for producing same. In a further aspect, the invention relates to homogenized post-consumer polyethylene terephthalate. In a further aspect, the invention relates to extruded polymer compositions, polymer mixtures, fibers, and/or Bulked Continuous Filament fibers comprising post-consumer polyethylene terephthalate. In a further aspect, the invention relates to processes for preparing recycled polyethylene terephthalate compositions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

First claim

What is claimed is:

1. An extruded polymer composition consisting essentially of polyethylene terephthalate polymer composition, wherein the polyethylene terephthalate polymer composition has about 25% by weight to about 100% by weight of homogenized deposit post-consumer polyethylene terephthalate and balance virgin polyethylene terephthalate, and wherein the homogenized deposit post-consumer polyethylene terephthalate comprises at least one impurity not present in virgin polyethylene terephthalate.

2. The extruded polymer composition of claim 1 , wherein the polyethylene terephthalate polymer composition has at least about 50% by weight of homogenized deposit post-consumer polyethylene terephthalate.

3. The extruded polymer composition of claim 1 , wherein the polyethylene terephthalate polymer composition has at least about 75% by weight of homogenized deposit post-consumer polyethylene terephthalate.

4. A polymer mixture consisting essentially of polyethylene terephthalate polymer composition, wherein the polyethylene terephthalate polymer composition has about 25% by weight to about 100% by weight of homogenized deposit post-consumer polyethylene terephthalate and balance virgin polyethylene terephthalate, and wherein the homogenized deposit post-consumer polyethylene terephthalate comprises at least one impurity not present in virgin polyethylene terephthalate.

5. The polymer mixture of claim 4 , wherein the polyethylene terephthalate polymer composition has at least about 50% by weight of homogenized deposit post-consumer polyethylene terephthalate.

6. The polymer mixture of claim 4 , wherein the polyethylene terephthalate polymer composition has at least about 75% by weight of homogenized deposit post-consumer polyethylene terephthalate.

7. A carpet comprising a fiber comprising an extruded polymer composition consisting essentially of polyethylene terephthalate polymer composition, wherein the polyethylene terephthalate polymer composition has about 25% by weight to about 100% by weight of homogenized deposit post-consumer polyethylene terephthalate and balance virgin polyethylene terephthalate, and wherein the homogenized deposit post-consumer polyethylene terephthalate comprises at least one impurity not present in virgin polyethylene terephthalate.

8. An extruded polymer composition consisting essentially of polyethylene terephthalate polymer composition, wherein the polyethylene terephthalate polymer composition has about 50% by weight to about 100% by weight of homogenized deposit post-consumer polyethylene terephthalate and balance virgin polyethylene terephthalate, and wherein the homogenized deposit post-consumer polyethylene terephthalate comprises at least one impurity not present in virgin polyethylene terephthalate.

9. The extruded polymer composition of claim 8 , wherein the polyethylene terephthalate polymer composition has at least about 75% by weight of homogenized deposit post-consumer polyethylene terephthalate.

10. The extruded polymer composition of claim 8 , wherein the polyethylene terephthalate polymer composition has at least about 90% by weight of homogenized deposit post-consumer polyethylene terephthalate by weight.

11. A polymer mixture consisting essentially of polyethylene terephthalate polymer composition, wherein the polyethylene terephthalate polymer composition has about 50% by weight to about 100% by weight of homogenized deposit post-consumer polyethylene terephthalate and balance virgin polyethylene terephthalate, and wherein the homogenized deposit post-consumer polyethylene terephthalate comprises at least one impurity not present in virgin polyethylene terephthalate.

12. The polymer mixture of claim 11 , wherein the polyethylene terephthalate polymer composition has at least about 75% by weight of homogenized deposit post-consumer polyethylene terephthalate.

13. The polymer mixture of claim 11 , wherein the polyethylene terephthalate polymer composition has at least about 90% by weight of homogenized deposit post-consumer polyethylene terephthalate.

14. A carpet comprising a fiber comprising a polymer mixture consisting essentially of polyethylene terephthalate polymer composition, wherein the polyethylene terephthalate polymer composition has about 50% by weight to about 100% by weight of homogenized deposit post-consumer polyethylene terephthalate and balance virgin polyethylene terephthalate, and wherein the homogenized deposit post-consumer polyethylene terephthalate comprises at least one impurity not present in virgin polyethylene terephthalate.

15. The extruded polymer composition of claim 1 , wherein the at least one impurity comprises floatable contamination in an amount less than 15 ppm, PVC contamination in an amount less than 50 ppm, or a combination thereof.

16. The polymer mixture of claim 4 , wherein the at least one impurity comprises floatable contamination in an amount less than 15 ppm, PVC contamination in an amount less than 50 ppm, or a combination thereof.

17. A fiber comprising the extruded polymer composition of claim 1 .

18. The fiber of claim 17 , wherein the fiber is a bulk continuous filament (BCF).

19. The fiber of claim 17 , wherein the at least one impurity comprises floatable contamination in an amount less than 15 ppm, PVC contamination in an amount less than 50 ppm, or a combination thereof.

20. A fiber comprising the polymer mixture of claim 4 .

21. The fiber of claim 20 , wherein the fiber is a bulk continuous filament (BCF).

22. The fiber of claim 20 , wherein the at least one impurity comprises floatable contamination in an amount less than 15 ppm, PVC contamination in an amount less than 50 ppm, or a combination thereof.

Assignees

• Columbia Insurance Co

Inventors

• Booth Hubert J
• Bradley Christopher Eric
• Johnson Daniel Ray
• Keen Jr James Henry

Classifications

• C08L67/02 Primary

  Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) · CPC title

• D10B2331/04

  polyesters, e.g. polyethylene terephthalate [PET] · CPC title

• D01F6/62

  from polyesters · CPC title

• D10B2503/04

  Floor or wall coverings; Carpets · CPC title

• D01F6/84

  from copolyesters · CPC title