Mono-layer rotomoulding applications
The present invention discloses a single layer rotomoulded article prepared from a blend of polyethylene, functionalized polyolefin and one or more resins selected from polyetherester or saturated polyester or polycarbonate or polyamide.
1. A mono-layer rotomoulded article comprising a blend of:
from 10 to 99.9 wt % of polyethylene;
from 0.1 to 90 wt % of a polyetherester; and
from 0 to 20 wt % of functionalised polyolefin; wherein these components are coextruded.
2. The mono-layer rotomoulded article of claim 1 wherein the blend comprises:
from 50 to 99.9 wt % of the polyethylene;
from 0.1 to 50 wt % of the polyetherester; and
from 0.5 to 20 wt % of the functionalised polyolefin, wherein the total of all components cannot exceed 100% of the blend.
3. The mono-layer rotomoulded article of claim 1 wherein the blend comprises at least 75 wt % of a metallocene-produced polyethylene.
4. The mono-layer rotomoulded article according to claim 3 wherein the metallocene catalyst component is bis(tetrahydroindenyl) or bis(n-butyl-cyclopentadienyl).
5. The mono-layer rotomoulded article according to claim 1 wherein the functionalised polyolefin is a grafted polyethylene or an ionomer or a mixture thereof.
6. The mono-layer rotomoulded article according to claim 1 wherein the resin further comprises a minor component, wherein the minor component is selected from the group consisting of polyether-block co-polyamide, thermoplastic polyurethane and fluoropolymer.
7. The mono-layer rotomoulded article according to claim 6 wherein the minor component is a fluoropolymer and the fluoropolymer is a copolymer of vinylidene fluoride or a copolymer of vinylidene fluoride and hexafluoropropylene.