Method for extracting nylon from waste materials
US7550516B2 · kind B2 · utility
5Cited by
31References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2005 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Dec 1, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method for recovering nylon from a nylon-containing material by contacting the nylon-containing material with an alkanol-containing solvent at elevated temperature and at a pressure higher than the equilibrium pressure of the alkanol-containing solvent at the elevated temperature, thereby dissolving the nylon in the alkanol-containing solvent, removing the alkanol-containing solvent containing dissolved nylon from any undissolved solids, and decreasing the temperature of the alkanol-containing solvent containing dissolved nylon to precipitate the dissolved nylon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.