Use of multifunctional CO2 for depolymerization of polyethylene terephthalate
US11920005B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Apr 30, 2021 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | May 5, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A high-efficiency, low-energy consumption and environmental-friendly recycling technology for PETE plastic waste is disclosed. The degradation of PETE plastic waste includes a method for attacking the —O— ester linkage in the repeat unit of PETE plastic with water in saturated pressure and CO2 in supercritical (Sc) conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.