Process of treating aqueous heating media in heating systems, and composition
US4303546A · kind A · utility
16Cited by
8References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1974 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Jul 26, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Scale formation as well as corrosion are suppressed by adding amino methylene phosphonic acids, hydroxy alkane diphosphonic acids, amino alkane diphosphonic acids, polyhydroxy acids, their alkali metal salts, or mixtures thereof to the aqueous heating medium of heating systems used for heat treating, such as sterilizing and pasteurizing, goods enclosed in glass, metal, and the like containers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.