Abstract:
Polyaminopolyarylmethanes and a monoarylamine are heated in water in the presence of a solid acid catalyst insoluble in the reaction mixture to convert the polyarylaminopolyarylmethanes into diaminodiarylmethanes.
Abstract:
Dyestuffs of the formula ##STR1## WHEREIN A denotes a ring which contains at least one quaternary nitrogen atom;B denotes an isocyclic or heterocyclic radical;Y denotes a radical for completing a ring;R denotes hydrogen or alkyl;An .sup.- denotes an anion; andk, m and n denote 1 or 2,Are suitable for dyeing and printing of natural and synthetic materials, particularly of polyacrylonitrile, copolymers of acrylonitrile with other vinyl compounds, of acid modified polyesters and acid modified polyamides. The dyestuffs are also useful in writing fluids, rubber stamp inks, ball point pen inks and in inks for flexographic printing.
Abstract:
A process for the production of aromatic polyamines comprising condensing primary or secondary aromatic amines with formaldehyde or a formaldehyde precursor in the presence of an acid catalyst and liberating the polyamines on completion of condensation by the addition of a basically reacting reagent, wherein a mixture containing amine, catalyst, aldehyde, precondensates formed therefrom, and water, issuing from a mixer at a maximum temperature of about 40.degree.C., is separated intoA. a side stream in which the heat liberated from the reacting mixture is dissipated in a heat exchanger following dilution of the total quantity of mixture of amine and catalyst, cooled to below about 40.degree.C., required for the reaction and the mixture thus obtained is reintroduced at a temperature of at most about 40.degree.C. into the mixer where formaldehyde is added, andB. a main stream which is pumped, through a reaction zone kept at a maximum of about 40.degree.C., into one or more heated residence reactors arranged in series in which the condensation reaction is completed at from about 80.degree.C. to about 200.degree.C.
Abstract:
New naphthalimides, useful as additives in toners for controlling the charge and conductivity, of the formula ##STR1## in which R represents C.sub.1 - to C.sub.22 -alkyl,R.sup.1 and R.sup.2 independently of one another in each case represent C.sub.1 - to C.sub.4 -alkyl, or R.sup.1 and R.sup.2, together with the nitrogen atom in between, form a pyrrolidine, piperidine or morpholine ring,n represents 2 or 3 andX.sup..crclbar. represent one equivalentof a benzoate or naphthoate, which is optionally substituted by chlorine, bromine, methyl, methoxy, hydroxyl, cyano and/or hydroxycarbonyl,of a benzenesulphonate which is substituted by hydroxyl, amino or nitro,of a naphthalenesulphonate which is optionally substituted by hydroxyl, amino or a sulphonic acid group, orof a fluorine-substituted anion of a C.sub.4 - to C.sub.18 -alkanecarboxylic or -alkanesulphonic acid.
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:
The invention relates to positively charged electrophotographic toners which, in addition to customary resin and pigment particles, contain an additive which intensifies the cationic charge, of the general formula ##STR1## wherein R.sup.1 and R.sup.2 independently of one another represent H, C.sub.1 -C.sub.22 -alkyl, allyl, cyclohexyl, phenyl-C.sub.1 -C.sub.2 -alkyl or phenyl andAn.sup.- denotes an anion,wherein the ring A and the cyclic and acyclic radicals can carry 1-2 nonionic substituents.
Abstract:
Positively charged electrophotographic toners contain, in addition to conventional resin and pigment particles, an additive reinforcing the cationic charge, of the general formula ##STR1## in which R.sup.1 and R.sup.2 each represent hydrogen, chlorine,bromine, hydroxyl, C.sub.1 -C.sub.4 -alkoxy or carboxyl,A represents C.sub.1 -C.sub.5 -alkylene or --C.sub.6 H.sub.4 --CH.sub.2 -- (m or p),m represents 0 or 1,n represents 1 or 2K.sup..sym. represents ##STR2## R.sup.3 represents C.sub.1 -C.sub.18 -alkyl, carbamoyl-C.sub.1 -C.sub.2 -alkyl, C.sub.1 -C.sub.4 -alkoxycarbonyl-C.sub.1 -C.sub.2 -alkyl, benzyl, cyclohexyl or allyl,R.sup.4 represents C.sub.1 -C.sub.4 -alkyl or a single bond linked to D,R.sup.5 represents C.sub.1 -C.sub.4 -alkyl,D represents --CH.sub.2, --CH.sub.2 --CO--, --CH.sub.2 --CO--NH-- orW represents ##STR3## --CO-- or a single bond,Z represents --CH.sub.2 --, ##STR4## --O--, --S--, --SO.sub.2 -- or a single bond and An.sup..crclbar. represents an anion.
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.