High bulk density detergent composition and process for its production
US4923628A · kind A · utility
22Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Mar 20, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/065
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A granular low-phosphate detergent composition is prepared by spray-drying a slurry to give a base powder containing a low to moderate level of sodium tripolyphosphate and low levels of inorganic salts, then postdosing solid material, including sodium sulphate, of high bulk density and of smaller particle size than the base powder. The resulting product has a bulk density at least 150 g/liter greater than that of the base powder and shows improved dispensing properties in an automatic washing machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.