Carbon dioxide soluble surfactant having two fluoroether CO2-philic tail groups and a head group
US6638749B1 · kind B1 · utility
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Key dates
| Filing date | Jan 8, 1998 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/814
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
There is provided a process for the extraction of water soluble biomaterials such as enzymes or proteins into carbon dioxide utilizing certain carbon dioxide-soluble surfactants. Also provided are certain carbon dioxide-soluble surfactants useful in the extraction of proteins. The surfactants are selected from fluoroether sulfate, fluoroether-polyethylene glycol block copolymer, fluoroether-functional sorbitol, and fluoroether dithiocarbamate chelate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.