Granular detergent components and particulate detergent compositions containing them
US6369020B1 · kind B1 · utility
9Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1999 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Nov 18, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A free-flowing granular detergent component comprises a high level (at least 30 wt %) of a heat-sensitive surfactant, preferably an alkyl ether sulphate; a water-insoluble silica or silicate carrier material of high oil absorption capacity; and a film-forming or crystal-forming structurant. The granular component may be used in conjunction with one or more other granular components containing surfactant and/or detergency builder, to form a particulate laundry detergent composition. The granular component is preferably prepared by mixing and granulation in a high- or moderate-shear mixer and drying in a fluidized bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.