摘要:
A process for preparing disazo condensation pigments by diazotization of an aromatic amine, azo coupling with a coupling component to form an azocarboxylic acid or azodicarboxylic acid, formation of an azocarbonyl chloride or azodicarbonyl dichloride and condensation of the azocarbonyl chloride with an aromatic diamine or of the azodicarbonyl dichloride with an aromatic amine comprises effecting the acyl chloride formation and/or the condensation and optionally the diazotization and optionally the azo coupling in a microreactor.
摘要:
Compounds of the formula ##STR1## in which A signifies a 1,4- or 1,5-naphthylene radical, unsubstituted or substituted by up to two substituents selected from chlorine, bromine, methyl, nitro, methoxy and cyano,The R.sub.1 's, independently, signify halogen or nitro, andThe R.sub.2 's, R.sub.3 's, R.sub.4 's and R.sub.5 's, independently, signify hydrogen, halogen or lower alkoxycarbonyl, with the proviso thatI. each benzene nucleus bears at least two substituents, andIi. each benzene nucleus bears no more than one alkoxycarbonyl group,Which, alone or in admixture one with another, are useful inter alia for pigmenting plastics in the mass and as pigmenting agents in surface coatings.
摘要:
The disazo pigment of the formula ##STR1## in the .beta.-modification thereof, whose X-ray diffraction pattern at an interplanar spacing of 3.33 A.degree. shows a line of very strong intensity, at 5.38 and 8.33 A.degree. lines of strong intensity, at 3.74, 4.24, 4.68, 4.94, 5.18 and 8.70 A.degree. lines of medium intensity, at 4.05, 4.37, 6.33 and 12.6 A.degree. lines of medium to faint intensity, at 3.50, 3.49, 5.65, 6.09, 6.71, 10.6 and 11.5 A.degree. lines of faint intensity.The .beta.-modified pigment is a brilliant yellowish red color and may be used to color high molecular weight organic materials such as polycarbonates, polyvinyl chloride and polypropylene.
摘要翻译:在其改性中的式(IMA)(I)的双偶氮颜料,在3.33A°的晶面间距处的X射线衍射图显示非常强烈的强度线,在5.38和8.33A°的强度线 强度为3.74,4.24,4.68,494.5 5.18和8.70A的中等强度的线,在4.05,4.33,6.33和12.6A°的培养基至弱的强度下,在3.50,3.49,5.65,6.09,6.71,10.6 和11.5 A DEG线的微弱强度。
摘要:
Disazo pigments of the formula ##STR1## wherein X represents hydrogen or chlorine and Y represents hydrogen or methyl, with X representing chlorine if Y represents hydrogen and X representing hydrogen if Y represents methyl are prepared. The compounds may be used for pigmenting organic materials such as ethyl cellulose, polyesters, and polyvinyl chloride. The compounds have outstanding fastness to light and migration, and good resistance to heat.
摘要:
Disazo pigments of the formula ##STR1## wherein R represents alkyl containing 1 to 6 carbon atoms, cyclohexyl or phenyl, and X and Y represent hydrogen, halogen, alkyl or alkoxy groups containing 1 to 4 carbon atoms which are useful for pigmenting high molecular organic material.
摘要:
Disclosed are pigments of the formula I, ##STR1## in which the X's, R.sub.1 and R.sub.2, independently, signify a fluorine, chlorine or bromine atom. They are useful, for example, for the pigmentation of synthetic polymers in the mass, in emulsion paints, printing inks and viscose and cellulose acetate spinning solutions and for dyeing paper in the stock.