Process for imparting oil- and water-repellency to the surface of porous ceramic materials
US5395657A · kind A · utility
31Cited by
16References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Dec 16, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/4935
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Oil- and water-repellency is imparted to the surface of a porous ceramic material, in particular of "cotto", by applying a phosphoric monoester having formula: ##STR1## where: L is a divalent organic group; m=1; Y is --F or --CF.sub.3 ; PA1 Z.sup.+ is a cation; R.sub.f is a polyperfluoroalkylene oxide chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.