| 摘要 |
<p>Pigments (I) are prepd. by reacting (1) with NH2.R3NH2 or (2) H2N.R1SO2.NR4R5 with (where R1 = aryl, R2 = 1,2,3 substd. naphthalene; R3 = arylene; R4 = aralkyl or aryl; R5 = H, aryl or (ar)alkyl, R4 = R5 = H, alkyl or R4-N-R5 =heterocycle, if H3 = diphenyl or naphthalene). Pref. R1 = (halogen substd.) phenyl; R3 = phenylene or diphenyl (opt. substd. with halogen, alkyl or alkoxy). Useful for dyeing rayon, cellulose fibres, polyamides, polyurethanes, etc.</p> |
