Stevens, Davis, Miller & Mosher
2-Cyano-4-nitro-6-chlorophenylazo 3-acetyl-or propionylamino-N,N-di-n-pentyl or hexylanilines
 A compound of the formula, ##STR1## wherein R.sup.1 is methyl or ethyl, R.sup.2 and R.sup.3 are each C.sub.5 -- or C.sub.6 --alkyl, and Z is chlorine for use as a blue disperse dye of hydrophobic fibers, either alone or as a mixed dye in combination with anthraquinone; the compound combines low cost relative to anthraquinone with superior stability in the dye bath and excellent dyeability; mixed dyes retain anthraquinone-imparted brilliance of color, have good color fastness, dyeability and reproducibility characteristics, and maintain low cost. 
Sumitomo Chemical Company, Limited
C C D C Y C C C C C
C09B C09B D06P C09B Y10S C09B C09B C09B C09B C09B
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Kenji Kiyoyasu Hirohito Junzaburo Katsunobu Yoshio
Yoshinaga Hashimoto Kenmochi Seino Sato Mori