Process for protecting stony materials, marble, tiles, and cement from atmospheric agents and pollutants
US5077097A · kind A · utility
15Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1989 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Dec 18, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27K3/15
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process for protecting stone materials, marble, tiles and cement as well as articles manufactured from these materials from the decay caused by the atmospheric agents and pollutants. The process uses a mixture consisting of: PA0 1) polytetrafluoroethylene in the form of an aqueous dispersion, PA0 2) an emulsion or a microemulsion of perfluoropolyethers either having or not having functional groups at their ends which is applied onto the surface of the materials or articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.