Process for the depolymerization of a polyester comprising opaque polyethylene terephthalate
US10544276B2 · kind B2 · utility
3Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2017 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Jul 4, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A subject-matter of the invention is a process for the depolymerization of a polyester feedstock comprising opaque PET, the said process comprising at least the stages of conditioning, of depolymerization and of separation of the diol and of separation of the liquid effluent rich in monomers, followed by a decolouration stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.