CO.sub.2 gels and methods for making
US4921635A · kind A · utility
14Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Nov 22, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/902
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for increasing the viscosity of CO.sub.2 comprising the steps of: mixing semi-fluorinated alkane and liquid CO.sub.2 ; and venting CO.sub.2 vapor from the liquid CO.sub.2 until the liquid CO.sub.2 becomes supersaturated. A gel that comprises a semi-fluorinated alkane; and liquid CO.sub.2. The semi-fluorinated alkane is of the form (F.sub.3 C)--(CF.sub.2).sub.N-1-(CH.sub.2).sub.M-1 -(CH.sub.3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.