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C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
C09B35/02—Disazo dyes
C09B35/039—Disazo dyes characterised by the tetrazo component
C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
C09B35/10—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type
C09B35/14—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type from hydroxy compounds
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Organic Chemistry
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Crystals, And After-Treatments Of Crystals
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Description
BERLIN. GEDRUCKT IN DER REICHSDRUCKEREIBERLIN. PRINTED IN THE REICH PRINTING COMPANY
Claims (1)
Patent-Anspruch:Patent claim:Neuerung in dem durch das Patent Nr. 40954 geschützten Verfahren, darin bestehend, dafs
man das aus 1 Molecül Tetrazodiphenylsalz und ι Molecül ß-Naphtol-a-monosulfosäure
(Bayer) entstehende Zwischenproduct mit Naphtionsäure combinirt.Innovation in the process protected by patent no. 40954, consisting in the fact that
one that from 1 Molecül tetrazodiphenyl salt and ι Molecül ß-naphthol-a-monosulfonic acid
(Bayer) resulting intermediate product combined with naphthoic acid.
DENDAT62659D
Method of preparing a mixed disazo dye. (4th
Expired - LifetimeDE62659C
(en)