Fluorescent whitening agent formulation for detergents
US6696406B2 · kind B2 · utility
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1References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 19, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Sep 19, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/2065
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid fluorescent whitening agent formulation comprising: a) a compound of formula (1), in which R1 represents hydrogen, 1-5 C-alkyl, 1-5 C-alkoxy or halogen, M represents hydrogen, an alkaline- or alkaline earth-metal, or ammonium; b) a polyhydroxy compound; c) 5 to 95% water, whereby the ratio of the compound of Formula (1) to the polyhydroxy compound is between 10:90 and 90:10 parts by weight and the total weight of these compounds in the formulation is between 5 and 95% and, optionally, auxiliary stabilizing agents and the use thereof for the manufacture of detergents with improved shade consistency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.