Process for the preparation of basic polyaluminum chlorosulphates and applications thereof
US5879651A · kind A · utility
5Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Mar 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/37
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of basic polyaluminium chlorosulphates. This process consists, after basification, in carrying out cooking at a temperature between 60.degree. C. and 95.degree. C. such that the cooking time is proportionately shorter than the higher cooking temperature. The polychlorosulphates obtained according to the process of the invention can be used for the treatment of drinking water, effluents and in the paper industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.