Method of synthesizing zincosilicate or stannosilicate or titanosilicate material
US4329328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1980 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Oct 16, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B39/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Sodium zinco/stanno/titano-silicate is synthesized by mixing a concentrated aqueous sodium zincate, stannate or titanate solution with a source of silica (e.g. powdered glass or sodium metasilicate solution) in the ratio 60 g sodium silicate to sodium zincate equivalent to 8.1 g zinc oxide, keeping the temperature at 40.degree. C. for 1/2 hour, diluting threefold with water of 20.degree. C., allowing a precipitate to form overnight, and filtering and drying the residue at 110.degree. C. The resulting sodium zincosilicate may be used in its own right as a water softener or may be converted by cation exchange into any other desired zincosilicate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.