摘要:
Azo dye compounds of substantially neutral density which are particularly useful in liquid electrographic developers and are of the formula: ##STR1## wherein: R.sup.1 is hydrogen, --COOH, --CONH.sub.2, --SO.sub.2 NH.sub.2 or --SO.sub.3 M and M is a cation;R.sup.2 is a lower alkoxy radical, --OCH.sub.2 CONH.sub.2, or ##STR2## R.sup.3 is hydrogen or nitro; and R.sup.4 and R.sup.5 are the same or different lower alkyl or lower hydroxyalkyl radicals.
摘要:
Concentrated, liquid preparations of metal-free direct azo dyes which contain in each instance 1 part by weight of dye, 1 to 8 parts by weight of water, and 0.5 to 5 or preferably 0.5 to 2 parts by weight of an amide are useful for dyeing paper in the stock and for dyeing paper sheet.
摘要:
Dyestuffs of the formula: ##STR1## are described, wherein K denotes the radical of a coupling component KH which can belong to the benzene, naphthalene or heterocyclic series. The dyestuffs are prepared by one-sided coupling of tetrazotized 4,4'-diamino-2,2'-dimethyldiphenyl with 2-hydroxynaphthalene-8-sulphonic acid in an alkaline medium, and reaction of the intermediate stage with the coupling component KH. The dyestuffs are useful for dyeing natural and synthetic, especially nitrogen containing fibre, materials such as wool and polyamides, including poly-.epsilon.-caprolactam or condensation products of adipic acid and hexamethylene diamine.
摘要:
Disazo dyestuffs wherein two N,N-dialkyl-p-phenylazoaniline dyestuff radicals are linked to each other via an N-alkyl group of the formula
WHEREIN D1 and D2 are each the residue of a diazo component of the benzene series; R1 and R2 are hydrogen, alkyl or substituted alkyl; C1, C2, D1 AND D2 EACH REPRESENT HYDROGEN, METHYL, ETHYL, METHOXY, ETHOXY, PHENYLTHIO OR PHENOXY; R3 and R4 are each alkylene of up to 3 carbon atoms,
SUCH THAT WHERE R3 and R4 are each
Z is
WHERE R5 is p-tolyl, p-methylcarbonylaminophenyl, phenyl, or C1-C3 alkyl or Z is -X''-Z''-X''wherein X'' is -O- or -NH- and Z'' is
AND WHERE R3 and R4 are not each
OR
ARE DISCLOSED. Such dyestuffs are suitable for dyeing and printing synthetic fibers.
摘要:
A DYESTUFF OF THE FORMULA D-N=N-(B-N=N)(N-1)-A(-Z-A-N=N-D)(M-1) IN WHICH D ISQUATERNATED OR UNQUATERNATED 3-HALOGENO1,2,4-THIADIAZOLYL-5-, N IS 1 OR 2, M IS 1 OR 2, N AND M TOGETHER ARE 2 OR 3, Z IS A SINGLE BOND, AN OXYGEN OR SULFUR ATOM, AN IMIDO OR SULFONYL GROUP, OR A DIVALENT ORGANIC RESIDUE, B IS A 1,4-PHENYLENE RESIDUE THAT MAY BE SUBSTITUTED, AND A IS THE RESIDUE OF ACOUPLING COMPONENT, D, B,A ANDZ BEING FREE FROM SULFONIC ACID GROUPS.