Azo dyes from 2-amino-3-nitro-5-acylthiophene

Details Azo dyes from 2-amino-3-nitro-5-acylthiophene Azo dyes from 2-amino-3-nitro-5-acylthiophene

1981-06-22

1983-08-09

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 2900

Patent

active

043977812

ABSTRACT:
Disclosed are novel azo dyes containing a substituted thiophene diazo moiety which produces bright blue shades on polyester and also have good affinity, dyeability and other properties on cellulose esters. The dyes have the formula ##STR1## wherein R is selected from alkyl, phenyl and phenyl substituted with 1-3 of alkyl, alkoxy, halogen or nitro; R.sub.1 and R.sub.2 are each alkyl or one of which is also selected from hydrogen; R.sub.3 is selected from hydrogen, cycloalkyl, alkyl, alkoxy, alkylamino, phenyl, phenyl substituted as for R above, and alkyl substituted with 1-3 of hydroxy, alkoxy, acyloxy, halogen, phenyl, phenoxy or cyclohexyl; X is hydrogen, alkyl, or alkoxy; and wherein each alkyl and alkoxy moiety is straight or branched and contains from 1-8 carbons.

REFERENCES:
patent: 2805218 (1957-09-01), Towne et al.
patent: 2825726 (1958-03-01), Towne et al.
patent: 4180503 (1979-12-01), vor der Bruck et al.
patent: 4264495 (1981-04-01), Maher et al.

Affiliated with

Also associated with

Rating

Azo dyes from 2-amino-3-nitro-5-acylthiophene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Azo dyes from 2-amino-3-nitro-5-acylthiophene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Azo dyes from 2-amino-3-nitro-5-acylthiophene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-586360