Process for producing calcium fluoborate
US4157377A · kind A · utility
2Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1978 |
| Grant date | Jun 5, 1979 |
| Priority date | — |
| Expiry date | Sep 5, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B35/063
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Dry calcium fluoborate suitable for use in the manufacture of boron trifluoride is produced by reacting, in an aqueous medium, calcium fluoride, hydrofluoric acid and boric acid followed by removing water from the calcium fluoborate reaction product by purging the reaction product with a dry inert gas such as nitrogen, at a temperature between about 140.degree. to 160.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.