Method for recovering a polymer in solution
US7790777B2 · kind B2 · utility
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12References
15Claims
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Key dates
| Filing date | Jul 14, 2004 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Sep 25, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Process for recovering at least one polymer in solution in a solvent by precipitation by means of a non-solvent fluid, whereby the precipitation takes place in a precipitation medium comprising two dispersants of which one [dispersant(I)] has a greater affinity for the non-solvent and the other [dispersant (II)] has a greater affinity for the solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.