Title:
PRE-TREATMENT OF POLYOLEFIN WASTE TO IMPROVE DEPOLYMERIZATION
Document Type and Number:
WIPO Patent Application WO/2023/281041
Kind Code:
A9
Abstract:
Pre-treatment methods for polyolefin-based feed streams before depolymerization are described. Polyolefins are separated from other material in the polyolefin-based feed stream using density differences in an aqueous solution, which allows for a pre-treatment method that does not affect the depolymerization catalyst. By removing the non-polyolefin materials from the feed stream, the depolymerization of the polyolefin material can proceed at lower temperatures for longer cycles. This results in a more efficient process with a smaller carbon footprint.
Inventors:
NAGY SANDOR (US)
BRITA DIEGO (IT)
SMITH CHRISTOPHER D (US)
HEAPS DAVID A (US)
WHITE DANIEL F (US)
RAMAGE DAVID L (US)
BRITA DIEGO (IT)
SMITH CHRISTOPHER D (US)
HEAPS DAVID A (US)
WHITE DANIEL F (US)
RAMAGE DAVID L (US)
Application Number:
PCT/EP2022/069030
Publication Date:
February 08, 2024
Filing Date:
July 08, 2022
Export Citation:
Assignee:
BASELL POLIOLEFINE ITALIA SRL (IT)
International Classes:
C08J11/10; C08J11/12; C08J11/14; C08J11/16
Attorney, Agent or Firm:
LYONDELLBASELL (IT)
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