Fluorescent whitening agent formulation
US5830241A · kind A · utility
20Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Apr 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/919
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There is described a liquid preparation comprising: PA1 a) 10 to 40 % by weight of the fluorescent whitening agent having the formula: ##STR1## wherein M is hydrogen, an alkali metal, ammonium or magnesium; b) 10 to 85% by weight of polyethylene glycol having a mean molecular weight in the range of from 150 to 500; PA1 c) 0 to 75% by weight of water; and PA1 d) 0 to 20% by weight of one or more auxiliary compounds; each based on the total weight of the liquid preparation. The new formulation is suitable for the fluorescent whitening of paper or detergents, and is stable over a wide range of temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.