Use of crystalline layered sodium silicates for softening water and a process for softening water
US4664839A · kind A · utility
191Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Apr 9, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/1273
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Crystalline layered sodium silicates having the composition NaMSi.sub.x O.sub.2x+1.y H.sub.2 O, in which M denotes sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20, are used for softening water containing calcium and/or magnesium ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.