摘要:
Dyestuff of the formula: ##STR1## in which A represents a mono- or disulphonated naphthalene residue which is unsubstituted or substituted by a hydroxy group and/or by an amino group, B represents an aliphatic, aromatic or heterocyclic residue and D represents the residue of a pyrazolone or an ester or amide of .beta.-ketonic acid; process for the coloration of animal or polyamide fibres in which the coloring agent is a dyestuff of the above formula and articles based on animal or polyamide fibres colored by means of such a dyestuff.
摘要:
The present invention relates to water-soluble trisazo dyes of the formula T ##STR1## and process for the preparation thereof and to the use thereof.
摘要:
The present invention concerns a new acid trisazo dye suited for the dyeing of natural and synthetic polyamidic fibres and particularly for the dyeing of leather. The dye has the following structural formula: ##STR1## and dyes in a full black shade. The present invention also includes a process for the preparation of dye (I) and comprises tetrazotizing 4-4' diaminoazobenzene and then coupling the tetrazo-compound thus formed with 2 molecules of 2-carboxymethylamino-8-naphtol-6-sulphonic acid (carboxy methyl-gamma acid) in an alkaline medium.
摘要:
Disclosed are azo dyes containing, a diazo component radical of the formula ##STR1## wherein each of Z and Z.sub.1 is independently hydrogen or sulfo, with the proviso that at least one of Z and Z.sub.1 is hydrogen, for example monoazo and disazo dyes of the formula ##STR2## and salts thereof, wherein K is a coupling component radical of the aromatic carbocyclic, active methylene group-containing aliphatic or aromatic heterocyclic series, andZ and Z.sub.1 are as defined above, with the proviso that the dyes contain one or two sulfo groups, and the use thereof for the dyeing and printing of anionic dyeable substrates, particularly polyamide substrates.
摘要:
Disclosed is a MnZn ferrite core comprising basic components, subcomponents and unavoidable impurities. To the basic components comprising: iron oxide (as Fe2O3): 51.0-54.5 mol %, zinc oxide (as ZnO): 8.0-12.0 mol % and manganese oxide (as MnO): remainder, are added silicon oxide (as SiO2): 50-400 mass ppm and calcium oxide (as CaO): 50-4000 ppm as subcomponents and in the unavoidable impurities, phosphorous, boron, sulfur and chlorine are respectively kept to: less than 3 mass ppm, less than 3 mass ppm, less than 5 mass ppm, and less than 10 mass ppm. The ratio of the measure specific surface area to the ideal specific surface area of the MnZn ferrite core satisfies the formula: Measured specific surface area/ideal specific surface area
摘要翻译:公开了包含碱性成分,亚成分和不可避免的杂质的MnZn铁氧体磁心。 对于包含氧化铁(以Fe 2 O 3计):51.0-54.5mol%,氧化锌(ZnO):8.0-12.0mol%和氧化锰(作为MnO))的基本组分:余量加入氧化硅(SiO 2): 50-400质量ppm和氧化钙(作为CaO):50-4000ppm作为次要成分,在不可避免的杂质中,磷,硼,硫和氯分别保持为:小于3质量ppm,小于3质量ppm,少 大于5质量ppm,小于10质量ppm。 MnZn铁氧体磁芯的测量比表面积与理想比表面积的比例满足下式:测量比表面积/理想比表面积<1500。
摘要:
A trisazo compound represented by the following formula (I) in the free acid form: ##STR1## wherein Q is an phenyl or naphthyl group both of which may be unsubstituted or substituted; one of the A and B is hydroxy group and the other is amino group; K is 1 or 2; and one of m and n is 1 and the other is 0; a method for dyeing fiber materials, paper or leather by using the trisazo compounds and an ink containing the trisazo compounds, and the trisazo compound is excellent in solubility, and good in storage stability and free from clogging of nozzle caused by deposition. The ink using the trisazo compound gives a deep black-colored image excellent in clarity, water-durability and durability to light.
摘要:
Compounds of the general formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and denote hydrogen, chlorine or bromine, methyl, ethyl, methoxy, ethoxy or nitro and K denotes identical or different radicals of enolizable ketomethylene compounds which do not contain groups imparting solubility in water, are obtained by coupling one equivalent of the bisdiazonium compound obtained by bisdiazotizing the diamine of the formula ##STR2## in which R.sup.1 and R.sup.2 have the meaning mentioned above, with 2 equivalents of one or more compounds of the formula KH in which K has the meaning mentioned above. These disazo compounds are pigments which have a high tinctorial strength and good fastness to migration, light, heat and chemicals.
摘要:
Compounds of the general formula I ##STR1## where R.sup.1 and R.sup.2 independently of one another are each C.sub.6 -C.sub.24 -alkyl or are each benzyl which is unsubstituted or substituted by alkyl or by cycloalkyl, and one of the radicals may furthermore be hydrogen, and the rings A, B, C and D can be further substituted by chlorine, methyl or methoxy, with the exception of the compound of the formula ##STR2## are useful as dyes in electrooptical liquid crystal displays or for the production of polarization films.
摘要:
An azo compound of the following formulae (I) or (II): ##STR1## wherein Q.sub.1 represents a phenyl group or a naphthyl group, Q.sub.2 represents a phenyl group; R represents hydroxy group; R.sub.1 and R.sub.2 each independently represent a hydrogen atom, a hydroxy group, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group or a halogen atom; R.sub.3 and R.sub.4 each independently represent a hydrogen atom, a hydroxy group, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group or a substituted amino group; and X represents --NH--, --NHCO-- or --N.dbd.N--; or a salt thereof; and a polarizing film containing the same.