Thixotropic aqueous automatic dishwasher detergent compositions with improved stability
US5098590A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | May 21, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0013
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous thixotropic automatic dishwasher composition comprising tripolyphosphate, a chlorine bleach compound, silicates, a thixotropic thickener and entrained air in an amount of 2% to 10% by volume. The composition preferably also contains a long chain fatty acid or its salt, an organic detergent active material, a foam depressant and an alkali metal carbonate. Also disclosed is a process for preparing aqueous thixotropic dishwasher detergent compositions having improved physical stability by entraining air into the composition in an amount such that the bulk and liquid phase specific gravities of the dishwasher detergent composition are approximately equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.