Sulfopolyester recovery
US7635745B2 · kind B2 · utility
13Cited by
218References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2006 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Aug 26, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Processes for the recovery of a sulfopolyester polymer from an aqueous dispersion and a sulfopolyester concentrate are provided. Particularly, a sulfopolyester concentrate, from which the sulfopolyester may be recovered and reused, are formed by processes such as evaporation and/or nanofiltration. Final recovery of the sulfopolyester may be achieved by further evaporation of water and/or salt precipitation. In addition, the recovered sulfopolyester and articles manufactured from the recovered sulfopolyester are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.