Heavy duty support
View Patent ↗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/m 3 and an MFR 2 of 0.25 g/10 min or less; and (B) a second high density polyethylene having a density of at least 940 kg/m 3 and an MFR 2 of 1.0 g/10 min to 20 g/10 min; wherein said polymer composition has an MFR 2 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.
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.