1 |
Ortho- and para-dihydroxyphenyl substituted monoazo dyes |
US35999864 |
1964-04-15 |
US3299041A |
1967-01-17 |
MILTON GREEN; SIMON MYRON S |
|
2 |
Triphendioxazine triazinyl dyes having phosphonic acid groups |
US752918 |
1976-12-21 |
US4092478A |
1978-05-30 |
David William Plant; David John Williams |
A dyestuff of the formula: ##STR1## wherein D is the residue of a colored compound of the 6,13-dichlorotriphendioxazine series, the triazine group being attached to a nitrogen atom in D, and wherein:Y is 1 or 2,R.sub.2 is Cl, Br, OH, lower alkoxy, NH.sub.2, a quaternary ammonium group or the residue of a primary or secondary amine,R.sub.1 is H or an alkyl or substituted alkyl group of up to 4 carbon atoms, andR is a hydrocarbon or substituted hydrocarbon radical.The invention provides a range of blue dyestuffs especially useful for reactively dyeing cellulose by heating in the presence of a carbodiimide. |
3 |
Stabilized azo dye and method for its preparation |
US11411488 |
2006-04-26 |
US20070254234A1 |
2007-11-01 |
Scott Zavada |
A diazo dye is stabilized through reaction with a metallo-alkoxide compound of the formula: M-(OR)n wherein n is an integer from 2 to 6 inclusive; R in each occurrence is a C1-C6 hydrocarbon; and M is a transition metal, main group metal or silicon. The stabilized dye exhibits an inhibited migration in graphic arts applications and as a coloring agent. |
4 |
Azo dyestuffs containing thiosulfatoarylpyrazolone groups |
US54151466 |
1966-04-11 |
US3346550A |
1967-10-10 |
GESELBRACHT GORDON A |
|
5 |
Novel photographic processes, compositions and products |
US78872859 |
1959-01-26 |
US3218164A |
1965-11-16 |
MILTON GREEN; RUBIN LEON E |
|