Novel tetraphosphonic acid compounds, intermediates and a process for their production
US4689123A · kind A · utility
3Cited by
6References
21Claims
0Family size
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Key dates
| Filing date | Dec 23, 1986 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Dec 23, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B3/29
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
As novel compounds, ethane tetraphosphonate esters, including octaalkyl and trimethylsilyl esters, and ethylene tetraphosphonic acid, as well as new compositions including a mixture of the acid with tetramethyl methylene diphosphonic acid, and a process for the preparation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.