Method of introducing dyes to ethanol
US5504199A · kind A · utility
0Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Oct 28, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0083
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A dye which is either 2-naphthalenol (phenylazo) phenyl azo alkyl derivatives and 1,4-dialkylamino anthraquinone is added to sufficient non-ionic surfactant to compatibilize it with ethanol and an solvent to produce a homogeneous solution. The homogeneous solution is added to ethanol in an amount to provide a desired amount of coloration to the ethanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.