| abstract |
1520215 Naphthoylene benzamidazole dyes PRODUITS CHIMIQUES UGINE KUHLMANN 22 Oct 1976 [23 Oct 1975] 43875/76 Heading C4P The invention comprises dyestuffs of the general formula wherin X is a straight or branched C 1 -C 4 aliphatic chain, the residues -NH-X-OH being in the 4,4<SP>1</SP>, 4,5<SP>1</SP> or 5,5<SP>1</SP> positions. X is preferably-C 2 C 4 - They are prepared by condensing one mole of 3,4,3<SP>1</SP>,4<SP>1</SP>-tetraminodiphenyl with at least two moles of a 4-halonaphthalic anhydride and reacting the dihalo compound obtained with at least two moles of an amino alcohol H 2 N-X-OH. The dyes colour polyamides and polyesters in red yellow shades. |