Thickened aqueous composition for the cleaning of a ceramic surface and methods of preparation thereof and cleaning therewith
US6294511A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1997 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Nov 12, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides an abrasive-free cleaning composition which includes, in aqueous solution, a bleach, a colloidal thickener, and a source of divalent ionic calcium. The composition further includes at least one surfactant which is effective to provide cleaning activity and, in association with the colloidal thickener, thickening. The composition also includes an electrolyte/buffer which is effective to promote an environment in which the thickener and the surfactant associate to provide proper thickening. The inventive cleaning composition, with its ionic calcium source, has desirable viscosity and rheological properties, and demonstrates significant viscosity stability, rheological stability, phase stability and bleach stability. The cleaning composition maintains these desirable properties under typical storage conditions as well as over extended times and at elevated temperatures. The present invention also provides a method of preparing an abrasive-free cleaning composition and a method of cleaning a substrate with an abrasive-free cleaning composition. The present invention further provides a composition having the above-mentioned advantages, which is particularl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.