Continuous coalescence processes
US9639013B2 · kind B2 · utility
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8References
9Claims
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Key dates
| Filing date | Apr 4, 2013 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | May 27, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2215/0477
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Processes for continuously coalescing particles from an aggregated particle slurry are disclosed. The aggregated particle slurry is heated, then coalesced by raising the pH. The coalesced particles are homogenized and exit as a coalesced particle slurry. A multi-screw extruder is used for the coalescing. These processes are useful for providing coalesced particles such as toner compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.