Production of anionic surfactant granules by in situ neutralization
US6518233B2 · kind B2 · utility
1Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2001 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Sep 20, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D11/0082
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In process for producing detergent particles, an acid precursor of an anionic surfactant and a neutralizing agent are fed into a horizontal thin-film evaporator/drier where they are neutralized, granulated and dried. The neutralizing agent is present in an amount equal to or in excess that required for stoichiometric neutralization and has a D50 mean particle size of less than 40 &mgr;m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.