Method for cleaning oil-deposited material
US5399203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Apr 15, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/24
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed herein are a method of cleaning an oil-deposited material, which comprises cleaning a material having oils deposited on the surface thereof with a cleaning agent comprising 25 to 90% by weight of at least one of compounds selected from the group consisting of pyrrolidones, .gamma.-butyrolactone and N,N-dimethylacetamide, and 10 to 75% by weight of water, then eliminating at least a portion of the deposited cleaning agent from said material to be cleaned by a physical means, and then applying water-washing with water, steam or water and steam; an apparatus for cleaning an oil-deposited materialhaving oils deposited on the surface thereof; and a cleaning agent therefor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.