System and process for recycling contaminated polyolefins
US11028248B2 · kind B2 · utility
0Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2017 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Feb 1, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a recycling process for contaminated polyolefins, in particular HDPE, wherein the contaminated polyolefin is swelled using a solvent such that contaminants in the polyolefin dissolve in the solvent, and the solvent as well as the contaminants dissolved from the solvent are removed from the polyolefin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.