The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2026
Filed:
Jun. 21, 2022
Equistar Chemicals, Lp, Houston, TX (US);
Harilaos Mavridis, Lebanon, OH (US);
Mick C. Hundley, Loveland, OH (US);
Sameer D. Mehta, Mason, OH (US);
Marco Consalvi, Ochhiobello, IT;
Gerhardus Meier, Frankfurt, DE;
Lindsay E. Corcoran, Liberty Township, OH (US);
Andreas Maus, Frankfurt, DE;
Timo Hees, Mainz, DE;
Pascal Rebmann, Frankfurt, DE;
Diana Doetsch, Bad Kreuznach, DE;
Katharina Elsas, Mainz, DE;
Equistar Chemicals, LP, Houston, TX (US);
Abstract
Methods for processing LDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LDPE recyclates. Processed LDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LDPE recyclate and/or pre-consumer polyolefins.