Low phosphorus containing detergent powders and process for preparing them: surfactant, aluminosilicate, sodium silicate and polyacrylate
US4988454A · kind A · utility
8Cited by
12References
9Claims
0Family size
Assignee
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Key dates
| Filing date | May 14, 1990 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | May 14, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D11/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Low or zero-P detergent powders are prepared by a process in which sodium aluminosilicate, a polymeric powder structurant and other components are slurried and spray-dried, and particulate sodium silicate of defined characteristics is postdosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.