Detergent powder and process for its preparation
US4783281A · kind A · utility
25Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1986 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Jan 8, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A spray-dried detergent powder contains from 15 to 40% by weight of anionic surfactant, from 20 to 70% by weight of sodium carbonate, from 5 to 20% by weight of sodium silicate and from 1 to 7.5% by weight of sodium bicarbonate, the weight ratio of sodium bicarbonate to sodium silicate being within the range of from 0.20:1 to 0.45:1. Optionally further sodium bicarbonate (up to 15% by weight) is postdosed to the spray-dried powder. The benefits of the invention are improved powder properties and, when further sodium bicarbonate is postdosed, mildness to hands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.