Process for making a low density detergent composition by controlled agglomeration in a fluid bed dryer
US6355606B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Jan 14, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for producing a low density detergent composition is provided. The process involves: (a) agglomerating a detergent surfactant paste or precursor thereof and dry starting detergent material in a first high speed mixer to obtain detergent agglomerates; (b) mixing the detergent agglomerates in a second high speed mixer to obtain built-up agglomerates; and (c) feeding the built-up agglomerates and a binder into a fluid bed dryer to form detergent agglomerates having a density in a range from about 300 g/l to about 550 g/l, the fluid bed dryer being operated at a Stokes Number of less than about 1, wherein Stokes Number=8&rgr;&ngr;d/9&mgr;, &rgr; is the apparent particle density of the built-up agglomerates, &ngr; is the excess velocity of the built-up agglomerates, d is the mean particle diameter of the built-up agglomerates and &mgr; is the viscosity of the binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.