Composition for temporarily protecting metal components from corrosion, its processes of preparation and of application, and metal components obtained from this composition
US6309697A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Mar 13, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/165
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention concerns a composition useful for providing temporary protection against corrosion to metal surfaces comprising an oil-in-water emulsion characterised in that said emulsion contains in its aqueous phase at least a compound of general formula (I) in which the groups R, R.sub.1 and R.sub.2 represent independently of one another a hydrogen atom, a C.sub.1 -C.sub.20 alkyl group, a C.sub.1 -C.sub.20 halogenoalkyl group with the halogen being chlorine, bromine, iodine or fluorine, a C.sub.3 -C.sub.6 cycloalkyl group, a carboxylic function or a C.sub.1 -C.sub.6 carboxyalkyl group; n is a whole number varying from 1 to 3; and X represents an oxygen or sulphur atom in the form of one of its soluble salts. The invention also concerns a method for preparing said composition, its method of application to the surface of metal part and the resulting part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.