Particulate laundry detergent compositions containing anionic surfactant granules
US6369015B1 · kind B1 · utility
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 primaryC11D1/29
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A particulate laundry detergent is composed of at least two different granular components, one of which is an anionic surfactant granule having a bulk density of 300-600 g/l comprising linear alkylbenzene sulphonate on a particulate carrier material comprising of sodium carbonate and an optional finely-divided water-insoluble particulate material, preferably zeolite, which must be present if the average particle size of the sodium carbonate exceeds 40 &mgr;m. Also present is at least one other selected granular detergent component. The anionic surfactant granule may be prepared by in-situ neutralisation of alkylbenzene sulphonic acid with sodium carbonate in a fluidised bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.