Aqueous acidic filter cleaning composition for removing organic biguanide deposits
US5776876A · kind A · utility
8Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Jul 18, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Effective, multi-use filter cleaning compositions include 5% to 60% of a strong acid, 1% to 40% of a surfactant, and 0.5% to 20% of a sequesterant/builder. The filter cleaning compositions optionally include 0.5% to 10% of a water soluble organic solvent, and/or 0.5% to 10% of a nonionic surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.