Viscoelastic cleaning compositions with long relaxation times
US5389157A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Jun 8, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A thickened aqueous cleaning composition is viscoelastic, with a long relaxation time to provide a thick solution with consumer-acceptable pour properties. The composition has utility as a drain opening composition or as a hard surface cleaner having a cleaning-effective residence time on non-horizontal surfaces. The composition includes a cleaning active, and a binary thickener comprising a betaine or sulfobetaine having a C.sub.14-18 alkyl, or C.sub.10-18 alkylamino or alkylamido group, and an organic, anionic counterion. The composition preferably has a relaxation time of at least about 5 seconds and a relative elasticity between about 10-500 sec/Pa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.