Inorganic water-softening bead
US4288342A · kind A · utility
9Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Jun 21, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/128
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An inorganic water-softening bead is disclosed having a density of from 36 to 46 lbs/cu ft consisting of at least 66% of sodium alumino silicate on an anhydrous basis; from 1 to 20% of sodium silicate; from 1 to 20% of a solubilizing agent, such as sodium sulfate; and the remainder being water. The sodium alumino silicate has a silica to aluminum oxide ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide ratio of between 0.8:1 and 1:1. The sodium silicate has a silica to sodium oxide ratio of between 1:1 and 3.3:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.