Method for degrading polyethylene terephthalate
US12221516B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2021 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Aug 14, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for degrading polyethylene terephthalate is provided. The method includes: providing polyethylene terephthalate material, providing a catalyst composite including a porous carrier having a pore size of 45 Å to 250 Å and a metal compound including at least one selected from a group consisting of zinc oxide, zinc hydroxide, zinc carbonate, magnesium oxide, calcium oxide, zirconium oxide, and titanium dioxide, in which the metal oxide is loaded on the porous carrier; and performing a degradation reaction, in which the polyethylene terephthalate material is reacted with the catalyst composite in the presence of an alcohol solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.