Polymeric substrate including a barrier layer
A polymeric substrate is disclosed. The polymeric substrate comprises a barrier layer including a polymeric material comprising about 50 wt. % or more of at least one polyolefin polymer and 50 wt. % or less of a hydrocarbon resin. The polymeric material exhibits a DTUL of 30° C. or more and a tensile modulus of 500 MPa or more and/or a flexural secant modulus of 500 MPa or more. The barrier layer has a thickness of greater than 200 μm to 6,500 μm. A shaped polymeric article comprising the polymeric substrate is also disclosed.
1. A polymeric substrate comprising:
a barrier layer including a polymeric material comprising about 50 wt. % or more of at least one polyolefin polymer and 50 wt. % or less of a hydrocarbon resin,
wherein the polymeric material exhibits a DTUL of 30° C. or more and a flexural secant modulus of 500 MPa or more, and
further wherein the barrier layer has a thickness of greater than 200 μm to 6,500 μm.
2. The polymeric substrate of claim 1 , wherein the at least one polyolefin polymer comprises an ethylene polymer.
3. The polymeric substrate of claim 1 , wherein the at least one polyolefin polymer comprises a propylene polymer.
4. The polymeric substrate of claim 3 , wherein the propylene polymer comprises a propylene homopolymer.
5. The polymeric substrate of claim 3 , wherein the propylene polymer comprises a propylene copolymer including at least one comonomer comprising ethylene, a C 4 -C 20 α-olefin, or a mixture thereof.
6. The polymeric substrate of claim 1 , wherein the hydrocarbon resin comprises an aliphatic hydrocarbon resin, an aliphatic/aromatic hydrocarbon resin, an aromatic hydrocarbon resin, a polyterpene resin, a terpene-phenol resin, a rosin ester, a rosin acid, or a mixture thereof.
7. The polymeric substrate of claim 1 , wherein the hydrocarbon resin is partially hydrogenated.
8. The polymeric substrate of claim 1 , wherein the hydrocarbon resin is fully hydrogenated.
9. The polymeric substrate of claim 1 , wherein the hydrocarbon resin is an aliphatic hydrocarbon resin.
10. The polymeric substrate of claim 9 , wherein the aliphatic hydrocarbon resin is a C 9 aliphatic hydrocarbon resin.
11. The polymeric substrate of claim 1 , wherein the hydrocarbon resin comprises a polycyclopentadiene.
12. The polymeric substrate of claim 1 , wherein the hydrocarbon resin has a weight average molecular weight of from about 400 g/mol to about 5,000 g/mol.
13. The polymeric substrate of claim 1 , wherein the hydrocarbon resin has a ring and ball softening point of about 110° C. or more.
14. The polymeric substrate of claim 1 , wherein the hydrocarbon resin comprises an aromatic C 9 hydrogenated resin having a ring and ball softening point of about 110° C. or more.
15. The polymeric substrate of claim 1 , wherein the barrier layer has a water vapor transmission rate of 3.0 cm 3 /m 2 /day or less and/or an oxygen transmission rate of 60 cm 3 /100 in 2 /day or less.
16. The polymeric substrate of claim 1 , wherein the barrier layer has a thickness of from 250 μm to 2,000 μm.
17. The polymeric substrate of claim 1 , wherein the polymeric substrate is a monolayer polymeric substrate.
18. The polymeric substrate of claim 1 , wherein the polymeric substrate is a multilayer polymeric substrate including at least one additional layer.
19. A shaped polymeric article comprising the polymeric substrate of claim 1 .
20. The shaped polymeric article of claim 19 , wherein the shaped polymeric article is a thermoformed shaped polymeric article, a blow molded shaped polymeric article, or an injection molded shaped polymeric article.