Washing and cleaning agent containing surfactants, builder, and crystalline layered sodium silicate
US4820439A · kind A · utility
145Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1987 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Feb 27, 2007 |
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.