Detergent composition
US4966606A · kind A · utility
24Cited by
12References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1987 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Oct 28, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Particulate detergent compositions containing a detergent active system, sodium carbonate and a calcite seed crystal exhibit improved dispensibility from automatic washing machines when the mean particle size is at least 500 microns, such as above 700 microns and the level of particles with a size below 50 microns is less than 2% by weight of the overall composition. The Rosin-Rammler distribution n value should be at least 4 when the means particle size is 700 microns but may be as low as 2 when the mean is 1200 microns. When the sodium carbonate and calcite are in separate particles, the sizes thereof should be similar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.