Inorganic water-softening bead
US4230593A · kind A · utility
9Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1979 |
| Grant date | Oct 28, 1980 |
| Priority date | — |
| Expiry date | Apr 2, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A non-water dispersible water-softening bead is disclosed having from 80 to 90% sodium alumino silicate and from 10 to 20% low density polyethylene. The bead has a diameter of between 200 and 1000 microns and a calcium capacity of at least 200 mg calcium carbonate/g. The sodium alumino silicate has a silica to aluminum oxide molar ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide molar ratio of between 0.8:1 and 1.2:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.