摘要：
THIS INVENTION CONCERNS ANTHRAQUINONE DYESTUFFS OF THE FORMULA
A(-NH-CH=C(-CN)-CO-N(-R1)-R2)N
WHEREIN A IS AN ANTHRAQUINONE RADICAL, N IS AN INTEGER FROM 1 TO 4 AND R1 AND R2 COMPLETE THE RESIDUE OF ALIPHATIC OF HETEROCYCLIC AMINES. THE DYESTUFFS ARE PREPARED BY REACTION OF THE APPROPRIATE CYANOACETIC ACID AMIDE WITH N-ANTHRAQUINONYL-N-FORMAMIDIUM SALTS. THESE DYESTUFFS ARE USEFUL FOR DYING OR PRINTING OF TEXTILES.
A(-NH-CH=C(-CN)-CO-N(-R1)-R2)N
WHEREIN A IS AN ANTHRAQUINONE RADICAL, N IS AN INTEGER FROM 1 TO 4 AND R1 AND R2 COMPLETE THE RESIDUE OF ALIPHATIC OF HETEROCYCLIC AMINES. THE DYESTUFFS ARE PREPARED BY REACTION OF THE APPROPRIATE CYANOACETIC ACID AMIDE WITH N-ANTHRAQUINONYL-N-FORMAMIDIUM SALTS. THESE DYESTUFFS ARE USEFUL FOR DYING OR PRINTING OF TEXTILES.
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