Abstract:
Thermal dye sublimation transfer recording element for receiving sublimable basic dye-precursors, comprising a support having thereon a dye-developing layer containing a dye-developing copolymer having sulfonic acid side-groups that can react with the basic dye-precursor to produce a dye image, characterized in that said dye-developing vinyl copolymer comprises plasticizing comonomers, the weight percentage of plasticizing comonomers in the dye-developing vinyl copolymer being such that the glass transition temperature of the dye-developing vinyl copolymer is between 30.degree. C. and 90.degree. C.
Abstract:
Fluorescent dyestuffs of the general formula ##STR1## wherein R and R.sup.1 independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 16 C atoms or an aryl or aralkyl radical which is optionally substituted by non-chromophoric groups,R.sup.2 to R.sup.5 independently of one another represent hydrogen, alkyl, trifluoromethyl, alkoxy, aralkoxy, alkenoxy, aryloxy, halogen or a carboxyl, cyano, alkyl sulphone, aryl sulphone, aralkyl sulphone, carboxamide, sulphonamide or carboxylic acid ester group,o, p, q and s independently of one another represent 1 or 2 andm and n independently of one another denote 0, 1 or 2, it being possible for the sum of m and n to be 2 to 4,processes for their preparation and their use as laser dyestuffs.
Abstract translation:其中R和R 1彼此独立地表示氢,成盐阳离子,具有1至16个碳原子的烷基或任选被非发色基团取代的芳基或芳烷基的通式为“IMAGE”的荧光染料 R 2至R 5彼此独立地表示氢,烷基,三氟甲基,烷氧基,芳烷氧基,烯氧基,芳氧基,卤素或羧基,氰基,烷基砜,芳基砜,芳烷基砜,甲酰胺,磺酰胺或羧酸酯基, p,q和s彼此独立地表示1或2,m和n彼此独立地表示0,1或2,m和n的和可能为2至4,其制备方法及其制备方法 用作激光染料。
Abstract:
Methine dyestuffs of the formula ##STR1## are prepared by subjecting a compound ##STR2## to a condensation reaction with a compoundA--CHO (VI)and with 1 to 5 equivalents of an inorganic acid in the presence of 0-30% by weight of an organic solvent and 0-15% by weight of water.
Abstract:
Fluorescent dyestuffs of the general formula ##STR1## wherein R and R.sup.1 independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 16 C atoms or an aryl or aralkyl radical which is optionally substituted by non-chromophoric groups,R.sup.2 to R.sup.5 independently of one another represent hydrogen, alkyl, trifluoromethyl, alkoxy, aralkoxy, alkenoxy, aryloxy, halogen or a carboxyl, cyano, alkyl sulphone, aryl sulphone, aralkyl sulphone, carboxamide, sulphonamide or carboxylic acid ester group,o, p, q and s independently of one another represent 1 or 2 andm and n independently of one another denote 0, 1 or 2, it being possible for the sum of m and n to be 2 to 4,processes for their preparation and their use as laser dyestuffs.
Abstract:
The preparation of hydrazone dyestuffs of the formula ##STR1## wherein R.sup.13 and R.sup.14 independently of one another represent hydrogen, C.sub.1 -- to C.sub.4 --alkyl, C.sub.1-- to C.sub.4-- alkoxy or halogen, in particular chlorine or bromine, andA.sup.- denotes an anionic radical,by reacting azo bases of the general formula ##STR2## wherein R.sup.13 and R.sup.14 have the above mentioned meaning andR.sup.15 represents hydrogen or the methyl group, with dimethyl sulphate in a mixture of water and an organic solvent and in the presence of an acid-binding agent, is characterized in that (a) aromatic or aliphatic chlorinated hydrocarbons are used as the organic solvents, (b) the reaction is carried out at a temperature of 10.degree.-60.degree. C., (c) a 5-90% excess of dimethyl sulphate is employed and (d) the reaction is allowed to proceed at a pH of 5-10.
Abstract:
Dyestuffs of the formula ##STR1## in which D is the radical of an aromatic or heterocyclic diazo component andK is the radical of an aromatic or heterocyclic coupling component, or is the radical of an active methylene compound,are obtained in an ecologically advantageous manner by reacting an aromatic or heterocyclic diazo components of the formulaD--NH.sub.2and a coupling component of the formulaH--Kwith a nitrite, for example NaNO.sub.2, in the presence of CO.sub.2 at a pressure of 5-100 at. The process is suitable in particular for the preparation of concentrated dye-stuff solutions, because expensive operations, such as, for example, pressure permeation and reverse osmosis, can be omitted.
Abstract:
The new carbonylaminostyryls of the formula (I) ##STR1## in which the substituents R.sub.1, A, B and Z have the meaning given in the description, are especially suitable for the production of recording materials which can be used for pressure-sensitive copying, or of thermoreactive or electrochromic recording materials.
Abstract:
Color-forming agents of the general formula ##STR1## wherein X denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy, alkoxycarbonyloxy, alkylamino, dialkylamino, acylamino, aralkylamino or arylamino,Q denotes cyano, alkoxycarbonyl, aryloxycarbonyl, aralkoxycarbonyl, carbamoyl, N-alkylcarbamoyl, N,N-dialkylcarbamoyl, N-alkyl-N-aryl-carbamoyl, acyl, alkoxysulphonyl, aralkoxysulphonyl, sulphamoyl, N-alkylsulphamoyl, N,N-dialkylsulphamoyl, alkylsulphonyl, arylsulphonyl or aralkylsulphonyl andR denotes alkyl, alkenyl or aralkyl,further isocyclic or heterocyclic rings can be fused on to the rings A, B, C and D, and the cyclic and acyclic radicals and the rings A, B, C and D can carry further substituents, are used for the preparation of pressure-sensitive recording materials.
Abstract:
Cationic hydrazone dyestuffs of the general formula ##STR1## in which R.sub.1 stands for hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy, nitro or halogen,R.sub.2 stands for hydrogen, C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy, halogen or phenylazo,R.sub.3 stands for C.sub.1 - to C.sub.3 -alkyl andA.sup.- stands for an anion,are prepared by quaternarizing azo bases of the general formula ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 have the abovementioned meaning, with dialkyl sulphates of the general formula(R.sub.3 --O).sub.2 SO.sub.2 IIIin whichR.sub.3 has the abovementioned meaning,in the presence of water and alkali metal sulphate or alkaline earth metal sulphate and, where appropriate, by replacing the alkylsulphate anion by another anion.
Abstract:
Cationic enamine dyestuffs of the general formula ##STR1## in which the symbols have the meaning given in the description, are used for dyeing natural and synthetic substrates and compositions which can be dyed with cationic dyestuffs, in particular paper.