Heavy duty support

Patent metadata

Field	Value
Publication number	US-11339277-B2
Application number	US-201716463613-A
Country	US
Kind code	B2
Filing date	Nov 23, 2017
Priority date	Nov 24, 2016
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

A polymer composition comprising a blend of two or more high density polyethylenes: (A) a first high density polyethylene having a density of at least 940 kg/m3 and an MFR2 of 0.25 g/10 min or less; and (B) a second high density polyethylene having a density of at least 940 kg/m3 and an MFR2 of 1.0 g/10 min to 20 g/10 min; wherein said polymer composition has an MFR2 of 0.25 to 15 g/10 min and wherein the components (A) and (B) combined form at least 91 wt % of said polymer composition.

First claim

The invention claimed is:

1. A polymer composition comprising:
a blend of two or more high density polyethylenes comprising:
a first high density polyethylene having a density of at least 940 kg/m 3 and an MFR 2 of 0.25 g/10 min or less; and
a second high density polyethylene having a density of at least 940 kg/m 3 and an MFR 2 of from 1.0 g/10 min to 20 g/10 min, and wherein the second high density polyethylene is multimodal and comprises from 30 to 70 wt % of a lower Mw component and from 70 to 30 wt % of a higher Mw component;

wherein said polymer composition has an MFR 2 of from 0.25 to 15 g/10 min, and
wherein the first high density polyethylene and the second high density polyethylene combined form at least 91 wt % of said polymer composition.

2. The polymer composition as claimed in claim 1 , wherein the first high density polyethylene is multimodal.

3. The polymer composition as claimed in claim 1 , wherein the polymer composition comprises less than 5 wt % of polypropylene.

4. The polymer composition as claimed in claim 1 , wherein the first high density polyethylene forms from 10 to 70 wt % of the polymer composition and the second high density polyethylene forms from 30 to 90 wt % of the polymer composition.

5. The polymer composition as claimed in claim 1 , wherein the density of the first high density polyethylene is from 945 to 965 kg/m 3 .

6. The polymer composition as claimed in claim 1 , wherein the MFR 5 of the first high density polyethylene is from 0.1 to 0.9 g/10 min.

7. The polymer composition as claimed in claim 1 , wherein the density of the second high density polyethylene is from 955 to 965 kg/m 3 .

8. The polymer composition as claimed in claim 1 , wherein the MFR 2 of the second high density polyethylene is from 2.0 to 10.0 g/10 min.

9. The polymer composition as claimed in claim 1 , wherein the density of the polymer composition is from 950 to 965 kg/m 3 .

10. The polymer composition as claimed in claim 1 , wherein the MFR 2 of the polymer composition is from 0.4 to 6.0 g/10 min.

11. The polymer composition as claimed in claim 1 , wherein the polymer composition further comprises from 0.2 to 9.0 wt % of a carbon black product.

12. The polymer composition as claimed in claim 1 , wherein the polymer composition comprises:
from 10 to 70 wt % of the first high density polyethylene;
from 30 to 90 wt % of the second high density polyethylene;
from 0 to 5 wt % additives; and
from 0 to 9 wt % of a carbon black product.

13. The polymer composition as claimed in claim 1 , wherein the MFR 2 according to ISO 1133 of the second high density polyethylene (HDPE) is from 2.0 to 8.0 g/10 min.

14. An article comprising the polymer composition as claimed in claim 1 .

15. The article as claimed in claim 14 , wherein said article is a pallet.

16. A pallet consisting of the polymer composition as claimed in claim 1 .

17. A process for the preparation of an article as claimed in claim 14 , the process comprising blending the first high density polyethylene and the second high density polyethylene to form the polymer composition and moulding the polymer composition to prepare said article.

18. A method of use of the polymer composition as claimed in claim 1 , the method comprising using the polymer composition in the manufacture of an article.

19. The method of use according to claim 18 , wherein said article is a pallet.

20. A pallet comprising a polymer composition, the polymer composition comprising:
a blend of two or more high density polyethylenes comprising:
a first high density polyethylene having a density of at least 940 kg/m 3 and an MFR 2 of 0.25 g/10 min or less; and
a second high density polyethylene having a density of at least 940 kg/m 3 and an MFR 2 of from 1.0 g/10 min to 20 g/10 min, and wherein the second high density polyethylene is multimodal and comprises from 30 to 70 wt % of a lower Mw component and from 70 to 30 wt % of a higher Mw component;

wherein said polymer composition has an MFR 2 of from 0.25 to 15 g/10 min, and
wherein the first high density polyethylene and the second high density polyethylene combined form at least 91 wt % of said polymer composition.

Assignees

• Abu Dhabi Polymers Company Ltd Borouge L L C
• Borealis Ag

Inventors

• Klimke Katja
• Buryak Andrey
• Kumar Ashish

Classifications

• C08L2207/062

  HDPE · CPC title

• C08L23/06 Primary

  Polyethylene · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title

• C08K3/04

  Carbon · CPC title

• B29K2023/12

  PP, i.e. polypropylene · CPC title