Thickening system for incorporating fluorescent whitening agents
US4764302A · kind A · utility
19Cited by
32References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1986 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Oct 21, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A thickening system for laundry products incorporates low levels of a fluorescent whitening agent or dye, a surfactant and an acidic pH adjusting agent. At the acidic pH, the fluorescent whitening agent precipitates as a colloidal particle, and is stabilized by associating with the surfactant, resulting in thickening. Optionally, a C.sub.6-18 soap synergistically increases viscosity. The thickening system may be formulated with a bleaching product and preferably with a peroxide bleach product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.