Process of coating calcium sulfate dihydrate detergent filler particles
US3997692A · kind A · utility
17Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1975 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Oct 20, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sodium sulfate, the compound commonly used as a filler in detergent compositions, is in short supply, and a suitable substitute for use in detergent compositions is calcium sulfate dihydrate coated with a substantially water-insoluble calcium salt selected from the group consisting of calcium carbonate, calcium silicate, calcium sulfite, calcium orthophosphate, hydroxyapatite and a calcium salt of an alkanoic acid having about 12 to about 22 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.