摘要:
Provided is a synthesis method for a self-dispersible pigment, including performing ring-opening addition of a lactone-based compound to an acidic group bonded to a surface of a pigment particle directly or via another atomic group to bond a functional group including an ester group to the surface of the pigment particle.
摘要:
A polyazo compound capable of effectively absorbing near-infrared rays, which can be produced from readily available raw materials is provided, which comprises at least one --OH group or at least one group derived from --OH group at p-position of the azo group in the molecule of the polyazo compound. This compound can be produced by diazotizing a substituted or nonsubstituted aromatic monocyclic or polycyclic compound or heterocyclic compound, each having a diazotizable primary amino group, and successively coupling the resulting diazo component with an azo component having a diazotizable primary amino group, the last azo component being such that --OH group or a group derived from --OH group be present at p-position to the azo group resulting from the azo component.
摘要:
The new dyestuffs of the formula (I) ##STR1## wherein the substituents R and R.sup.1 and the index n have the meaning given in the description, are outstandingly suitable for dyeing and printing cellulose-containing materials, in particular for the preparation of recording liquids for ink jet recording systems.
摘要:
Light-polarizing films or sheets, preferably based on vinyl alcohol homopolymers or copolymers contain dyestuffs of the formula ##STR1## in which X and Y have the meanings given in the description.
摘要:
Aqueous dye mixtures for black shades containing as dyes essentially those dyes which have the C.I. number 19,140, 40,000 or 47,035, in the form of the alkanolammonium salt, and also the dyes of the formula I, II and/or III ##STR1## where the cations R.sup.+ are each independently of the others an alkanolammonium cation, a substituted or unsubstituted ammonium cation or an alkali metal cation, and the quantities of the individual dyes are such as to produce a black, are suitable in particular for dyeing paper and leather.
摘要:
Photoreceptor for electrophotography comprising a conductive support and an overlaying photosensitive layer thereon, said photosensitive layer containing at least one azo compound of Formula I or II ##STR1## wherein Ar.sub.1, Ar.sub.2, Ar.sub.3 and Ar.sub.4 each is an aromatic hydrocarbon ring radical or an aromatic heterocyclic ring radical; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each is an electron attractive group or hydrogen provided that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is an electron attractive group; and A is ##STR2## wherein X is a hydroxy group or a group represented by the formula: ##STR3## wherein R.sub.6 and R.sub.7 each is hydrogen or an alkyl group, and R.sub.8 is an alkyl or aryl group; Y is halogen, an alkyl or alkoxy group, a carboxy group, a sulfo group, a carbamoyl or sulfamoyl group; Z is an atomic group necessary for making an aromatic hydrocarbon ring or an aromatic heterocyclic ring; R.sub.5 is hydrogen, an amino or carbamoyl group, a carboxy group or an ester group thereof; Ar.sub.5 is an aryl group; n is an integer of 1, 2 or 3; and m is an integer of 0, 1 or 2.
摘要:
A water soluble disazo compound represented by the general formula: ##STR1## wherein X represents a hydrogen atom or a methyl, methoxy or ethoxy group, Y represents a methoxy or ethoxy group, R.sub.1 represents a hydrogen atom or a methyl group, R.sub.2 represents a hydrogen atom or a methyl, --C.sub.2 H.sub.4 OH, ##STR2## group, and the ##STR3## group is bonded at the 6- or 7-position, a copper complex salt thereof, and a sheet or film colored therewith.
摘要翻译:一种由以下通式表示的水溶性双偶氮化合物:其中X表示氢原子或甲基,甲氧基或乙氧基,Y表示甲氧基或乙氧基,R1表示氢原子或 甲基,R 2表示氢原子或甲基,-C 2 H 4 OH,IMAGE>基团,并且在6位或7位上的< IMAGE>基团,其铜配合物盐和与其着色的片或膜 。
摘要:
New disazo and polyazo dyestuffs which, in the form of the free acid, correspond to the general formula ##STR1## wherein K, R, m and n have the meaning indicated in the description,the use of these dyestuffs for dyeing and printing cellulose fibre materials and leather, and concentrated solutions containing azo dyestuffs according to formula (I).
摘要:
Novel salts of stilbene-azo or stilbene-azoxy dyestuffs, in which the cations are selected from tetra-alkylammonium, tetra-alkylammonium in combination with lithium, sodium, potassium or ammonium, and ammonium in combination with lithium, sodium or potassium, have good cold water solubility relative to known salts of such dyes. The preferred dyes have the formula ##SPC1##Wherein1. each R' is independently --SO.sub.3 .sup.-M.sup.+ or --SO.sub.3 .sup.-N.sup.+(R).sub.4,wherein each R is independently alkyl of 1 to 6 carbon atoms or alkyl of 1 to 6 carbon atoms substituted by hydroxy, cyano, halo or phenyl, andEach M.sup.+ is independently hydrogen, lithium, sodium, potassium or ammonium,With the proviso that at least one R' is --SO.sub.3 .sup.-N.sup.+(R).sub.4,2. each R' is --SO.sub.3 .sup.-M.sup.+,wherein each M.sup.+ is lithium, sodium, potassium or ammonium,With the proviso that at least one M.sup.+ is ammonium, or3. each R' is independently --SO.sub.3 .sup.-M.sup.+ or --SO.sub.3 .sup.-N.sup.+(R).sub.4,wherein each R is independently alkyl of 1 to 6 carbon atoms or alkyl of 1 to 6 carbon atoms substituted by hydroxy, cyano or halo, andEach M.sup.+ is ammonium or an alkali metal,With the proviso that at least one R' is --SO.sub.3 .sup.-M.sup.+ wherein M.sup.+ is ammonium.The dyes are useful for producing colored paper by incorporation into paper stock or by application to paper sheet. The dyed paper is fast to light and wet treatments.