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US 10,240,009 B2Granted
Composites of polyethylene and polylactic acid
AssigneeFina Technology, Inc.
InventorsJason Clark, John Ashbaugh, Fengkui Li, David Rauscher, William Gauthier
Life of this patent
Estimating the term…
Abstract
A composite may include polylactic acid, polyethylene, and optionally a compatibilizer. The composite may be formed by combining the polylactic acid with the polyethylene. The composite may be formed into an extruded article.
Claims23
Piping comprising:
- a composite of polylactic acid and polyethylene, wherein the polyethylene has a tensile strength at yield of from about 3000 psi to 4000 psi, as measured by ASTM-D-638, Type IV Specimen, a tensile modulus of less than about 940 MPa, as measured in accordance with ASTM-D-638, an Izod impact, notched, ranging from about 2.0 to about 20 ft-lb/in, as measured in accordance with ASTM-D-256, and a PENT of less than about 300 hours, as measured by ASTM-F-1473, wherein the composite exhibits a PENT, measured in accordance with ASTM-F-1473, that is at least about 10 percent greater than a PENT of the polyethylene without the polylactic acid.
Dependencies are inferred from the claim text.