Polyester textile waste recycling
US11021589B2 · kind B2 · utility
1Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2018 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Feb 19, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for recycling polyester from a polyester textile comprises the steps of: providing said polyester textile soaked in a mixture comprising a solvent and a catalyst, providing and maintaining a temperature of said mixture comprising said polyester textile within a range of 80-240° C. during depolymerization of polyester in said polyester textile and wherein, in said step of providing said polyester textile soaked in said mixture, said catalyst of said mixture comprises calcium oxide. A catalyst may be used for depolymerization of polyester in a polyester textile, wherein the catalyst comprises calcium oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.