Method and apparatus for separating polymer from a plastic, and the resulting separated polymer
US5739270A · kind A · utility
37Cited by
8References
15Claims
0Family size
Inventors
Key dates
| Filing date | Aug 1, 1995 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Aug 1, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for continuously separating polymer from a plastic, and the resulting separated polymer. The plastic is made flowable into a stream through melting or solubilizing. A critical fluid, such as supercritical carbon dioxide, is added to the plastic stream to promote mechanical or thermodynamic separation of the polymer from contaminants and other components of the plastic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.