| 摘要 |
<p>1394157 4,7 - Diamino - 5,6 - phthaloyldihydroisoindole dyestuffs CIBA-GEIGY AG 15 Feb 1973 [21 March 1972] 7482/73 Heading C4P Novel dyestuffs, free from acid water-solubilizing groups, of the formula wherein X is O or NH; Y is alkylene which may be substituted and/or O, N or S interrupted; Z is O, NH or -N(alkyl)-; B is halogen or H; and Ac is the acyl radical of an organic carboxylic, sulphonic or carbamic acid, are prepared (a) by direct acylation of corresponding -ZH compounds; or (b) by reacting compounds of the formula X<SP>1</SP>-Y-Z-Ac (wherein X<SP>1</SP> is halogen or NH 2 ) with appropriate #NH compounds or, when X<SP>1</SP> is NH 2 , with appropriate dicarboxylic acid anhydrides; or (c) by reacting compounds of the formula with NaCN. Products wherein X is NH may be hydrolysed to those wherein X is O, and if this hydrolysis is incomplete mixtures of dyestuffs are formed. The dyestuffs which are free from water-solubilizing groups and which have sparing aqueous solubility are used for dyeing or printing synthetic organic fibres, e.g. polyesters, polyamides, polyolefins or cellulose acetates, for colouring and pigmenting lacquers, oils, waxes and celllulose derivatives, and for dope dyeing polyamides.</p> |
