Compositions comprising fluorinated silanes and compressed fluid CO2
US6656258B2 · kind B2 · utility
21Cited by
21References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Nov 26, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2401/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides composition for treating a substrate comprising a homogeneous mixture of:(a) a fluorinated silane of the formula:Rff1-[-Q-SiY3-xR1x]y   (I) wherein Rf1 represents a monovalent or divalent perfluorinated group, Q represents an organic divalent linking group, R1 represents a C1-C4 alkyl group, Y represents a hydrolysable group; x is 0 or 1 and y is 1 or 2;(b) compressed fluid carbon dioxide; and(c) optionally an organic or inorganic acid.The invention further provides a method of making such a composition and the use thereof to treat substrates to render them oil and water repellent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.