Stripping and cleaning composition
US5698503A · kind A · utility
64Cited by
12References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Nov 8, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous and acidic stripping and cleaning composition is provided which contains a polyhydric alcohol, ammonium fluoride, dimethylsulfoxide and water. The pH of the composition is greater than about 4 but less than 7. Also provided is a method of stripping and cleaning utilizing the compositions of the invention. Optionally, the composition may contain a phosphate buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.