Production of hexametaphosphates from other phosphates
US4997638A · kind A · utility
1Cited by
2References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1990 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Jun 11, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B25/41
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a method of making hexametaphosphates by reacting sodium tripolyphosphate, tetrasodium pyrophosphate, or trisodium phosphate with phosphoric acid, forming a molten glass of said mixture, and chilling said molten glass to form a solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.