Limescale removal compositions
US5686399A · kind A · utility
5Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1996 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Feb 5, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3947
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions for the removal of limescale comprise aryl sulfonic acids, optionally, acid stable bleach compositions, and, optionally, sulfamic acid. The compositions are used in a process for removing limescale as aqueous compositions. The pH of the compositions is from about 0 to about 4. The compositions provide improved performance for equal reserve acidity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.