Compositions comprising fluorinated polyether silanes for rendering substrates oil and water repellent
US6613860B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2000 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Oct 12, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/336
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides composition for treating a substrate comprising a homogeneous mixture of:(a) a fluorinated polyether silane of the formula:Rf1—[—Q—SiY3−xR1x]y  (I) wherein Rf1 represents a monovalent or divalent polyfluoropolyether 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) an organic or an inorganic acid;(c) water; and(d) an organic solvent. 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.