摘要:
ARE SUITABLE FOR THE DYEING, PRINTING AND BULK DYEING OF SYNTHETIC AND SEMISYNTHETIC MATERIALS ESPECIALLY POLYAMIDES, ACETATE RAYON AND ACID MODIFIED POLYESTERS, LEATHER, COCOA FIBERS, PAPER AND JUTE, FOR THE PRODUCTION OF INKS AND PASTE FOR BALL POINT PENS, FOR USE IN OFFSET PRINTING, FOR USE IN DYEING, PRINTING AND BULK DYEING MATERIALS WHICH COMPLETELY OR PREDOMINATELY CONSIST OF POLYMERIZED ACRYLONITRILE AND OR VINYLIDENE CYANIDE, THE DYEINGS AND PRINTS ON THE LAST MENTIONED MATERIALS ARE CHARACTERIZED BY OUTSTANDING FASTNESS PROPERTIES, ESPECIALLY FASTNESS TO LIGHT, WET PROCESSING, CROSS DYEING, DECATIZING, SUBLIMATION, EXHAUST FUMES AND RUBBING. The dyestuffs are readily soluble, they yield deep dyeings, due to their high yield and very good drawing power and they do not soil wool. In the formula given above A denotes the residual members of a heterocyclic five or six membered ring to which further rings may be annelated, R is hydrogen, alkyl aralkyl, cycloalkyl or aryl, and R may also be linked to A or to another ring which is annelated to the ring containing A, R1 is hydrogen, alkyl, aralkyl, cycloalkyl or aryl and R1 may also be linked to B or B1, and X is an anion.
摘要:
Color converter comprising at least one polymer and at least one organic fluorescent dye comprising at least one structural unit of the formula (I) where the structural unit may be mono- or polysubstituted by identical or different substituents and where one or more CH groups of the six-membered ring of the benzimidazole structure shown may be replaced by nitrogen.
摘要:
Color converter comprising at least one polymer and at least one organic fluorescent dye comprising at least one structural unit of the formula (I) where the structural unit may be mono- or polysubstituted by identical or different substituents and where one or more CH groups of the six-membered ring of the benzimidazole structure shown may be replaced by nitrogen.
摘要:
Naphtholactamtrimethine dyes useful in optical recording media have the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each is independently of the others C.sub.1 -C.sub.22 -alkyl, which may be substituted and/or interrupted by one or more oxygen atoms, one or more imino groups or one or more C.sub.1 -C.sub.4 -alkylimino groups, or is substituted or unsubstituted C.sub.5 -C.sub.7 -cycloalkyl or substituted or unsubstituted phenyl, and the rings A, B, C and D may each be substituted and/or benzofused.
摘要:
Novel chromogenic derivatives of 1,2-bis-(o-aminoaryloxy)ethane-N,N,N',N'-tetraacetic acid are useful for the determination of calcium ions in both solution and dry assays. These compounds comprise a dye moiety which is directly conjugated to the acetic acid substituted-nitrogen atom and which enables the compounds to exhibit maximum absorbance at a wavelength generally greater than 400 nm before complexation. When the compounds are complexed with calcium ions, the absorbance shifts to a shorter wavelength.
摘要:
Water-soluble cationic dyestuffs are prepared by the reaction of dyestuffs of the formula ##STR1## wherein R and R.sub.1 represent alkyl,R.sub.2 represents alkyl, aralkyl, cycloalkyl or aryl or represents alkylene which is bonded to the ring A in the o-position relative to the nitrogen atom, andAn.sup.- represents an anion,and wherein the said radicals, the ring A and the naphthalene ring can contain nonionic substituents customary in dyestuff chemistry,and wherein at least one of the radicals R and R.sub.1 contains a hydroxyl group or a halogen atom or another group which can be split off as an anion,with polyhydric alcohols in the presence of a catalyst.
摘要:
A naphtholactam dyestuff of the general formula (I) ##STR1## in which R represents alkyl, alkenyl, cycloalkyl, aralkyl, aryl or, preferably, hydrogen, M represents hydrogen or a cation, X represents .dbd.O, .dbd.NH or .dbd.NR', Y represents a free or modified carboxyl group, Z represents a non-ionic substituent, n represents 0, 1 or 2, B represents a group which completes ring A to give a heterocyclic structure, R' represents alkyl, alkenyl, cycloalkyl, aralkyl, aryl, or, preferably, hydrogen and E and F can carry further non-ionic substituents.The new dyestuffs give brilliant yellow and red shades on polyester fibres.
摘要:
A dyestuff of the general formula (I) ##STR1## in which R represents alkyl, alkenyl, cycloalkyl, aralkyl, aryl or, preferably, hydrogen, M represents hydrogen or a cation, Y represents a free or modified carboxyl group, Z represents a non-ionic substituent, n represents 0, 1 or 2, A represents a heterocyclic radical or an aromatic radical having negative substituents and B and C can carry further non-ionic substituents. The dyestuffs give brilliant red and yellow shades on polyester fibers.