Synthesized inorganic ion exchange material and detergent composition containing the same
US5618783A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1995 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Feb 28, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/1246
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The synthesized inorganic crystalline ion exchange material has a composition represented by the following general formula in an anhydride form: EQU aX.sub.2 O.bSiO.sub.2.cX'O, wherein X represents Na and K; X' represents Ca, or Ca and Mg; b/a is 1.4 to 2.1; c/a is 0.001 to 0.35; K/Na in X.sub.2 O is 0.09 to 1.11; Mg/Ca in X'O is 0 to 100; and K.sub.2 O/SiO.sub.2 is 0.06 to 0.25. The synthesized inorganic crystalline ion exchange material exhibits main shift peaks at least at 1080.+-.6 cm.sup.-1 in Raman scattering spectra in the range of from 900 to 1200 cm.sup.-1. The inorganic ion exchange material of the present invention is excellent in cationic exchange capacity, cationic exchange speed, and anti-solubility, making it useful to be used for a water softener and an alkalinity adjusting agent in detergents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.