C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/162.5, 260/1
C09B 29/00 (2006.01) C09B 31/02 (2006.01) C09B 33/02 (2006.01) C09B 43/11 (2006.01)
Patent
CA 1052375
ABSTRACT OF THE DISCLOSURE Azo dyes or the generic formula Image wherein R1 an aliphatic group, W is a divalent group of the 1,4-phenylene or 1,4-naphthylene series, m is 0 or 1, and A is a coupling component selected from 1) a 5- or 6-membered heterocyclic ring containing nitrogen or oxygen in the ring and having an amino, oxo or hydroxy substituent, 2) a naphtholyl group, and 3) an aromatic amine having no substituents in the 4-position to the amino group and at least one aliphatic or cycloaliphatic substituent attached to the amino nitrogen.
223457
E.i. Du Pont de Nemours And Company
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