Composition and method for degreasing metal surfaces
US6328816A · kind A · utility
8Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention is a cleaning solution for degreasing metal articles which contains water soluble, N-alkyl substituted amides in which the alkyl substituent has from 6 to 22 carbon atoms and at least one of (i) amine oxide surfactants, (ii) non-ionic water soluble nonionic surfactants with molecules containing a polyoxyalkylene block, and (iii) alkali stable anionic, or both anionic and amphoteric, surfactants. Preferred compositions of the invention can replace a vapor degreasing process for cleaning oil, grease, and waxy-type contaminants from metal articles to the level of cleanliness required in the aerospace industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.