Phenyltetraline-diphosphonic acids and process for making them
US4692282A · kind A · utility
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5Claims
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Key dates
| Filing date | May 2, 1986 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | May 2, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/83
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel-1-phenyltetraline-1,4-diphosphonic acids of the formula ##STR1## are made by reacting 1-phenylvinyl-1-phosphonic acids at temperatures of from 120.degree.-210.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.