Process for making granular detergents
US5998356A · kind A · utility
7Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Mar 12, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D11/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for making granular detergents is disclosed. In a first step, an aqueous slurry is formed. The aqueous slurry comprises anionic surfactant, chelating agents, at least 0.5%, by weight, of sodium aluminosilicate, and inorganic salts of a type which raise the ionic conductivity of the aqueous slurry. The aqueous slurry contains essentially no silicates and has a low viscosity suitable for spray-drying to form crisp, free-flowing powder. After being formed, the slurry is dried to form a particulate detergent composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.