Linear viscoelastic aqueous liquid automatic dishwasher detergent composition
US5205953A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1991 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Jul 5, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Automatic dishwasher detergent composition is formulated as a linear viscoelastic, pseudoplastic, gel-like aqueous product of exceptionally good physical stability in exposed daylight, low bottle residue, low cup leakage, and improved cleaning performance, Linear viscoelasticity and pseudoplastic behavior is attributed by incorporation of cross-linked high molecular weight polyacrylic acid type thickener. Potassium to sodium weight ratios of at least 1/1 minimize amount of undissolved solid particles to further contribute to stability and pourability. Control of incorporated air bubbles functions to provide the product with a bulk density of about 1.35 to 1.40 g/cc which roughly corresponds to the density of the liquid phase. A polymeric chelating agent in the composition improves physical stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.