Abstract: A liquid-crystalline polymer of virtually uniform molecular weight, obtainable by polymerizing identical or different monomers of the formula I ##STR1## where R is hydrogen, chlorine or methyl,A is a flexible, long-chain moiety which acts as a spacer, is a mesogenic moiety built up from at least two aromatic rings which are linked to one another in a linear or approximately linear manner, andC is an optically active, chiral moiety,in from 0.01 to 0.1 molar solution in an inert organic solvent in the presence of from 1 to 40 mol %, based on the monomers, of a free-radical initiator, at from 40.degree. to 60.degree. C. for from 100 to 140 hours, and subsequently isolating the polymerization product from the reaction mixture, and the use thereof for building up recording layers for laser-optical and electrical recording elements and for electrophotography and for building up liquid-crystalline display elements.

Abstract: Indonaphthol thermal transfer dyes have the formula ##STR1## where X is nitrogen or the radical CH,R.sup.1 and R.sup.2 are each independently of the other C.sub.1 -C.sub.6 -alkyl, which may be substituted, C.sub.1 -C.sub.6 -monooxaalkyl or -dioxaalkyl or allyl,R.sup.3 and R.sup.4 are each independently of the other hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkanoylamino, andR.sup.5 is five-membered hetaryl which is not benzofused and has two or more hetero atoms,with the proviso that R.sup.1 and R.sup.2 are not both unsubstituted C.sub.1 -C.sub.6 -alkyl at one and the same time.

Abstract: Pyridone transfer dyes have the formula ##STR1## where Q.sup.1 is hydrogen, fluorine, chlorine, methyl or a substituted amino radical,Q.sup.2 is hydrogen, fluorine or chlorine or Q.sup.1 and Q.sup.2 together with the carbon atoms to which they are attached form an aromatic carbocyclic or heterocyclic ring,x is a heterocyclic radical, a carboxylic or carboxamide radical or substituted amino radical andK is an aromatic radical.

Abstract: Azo dyes useful for dyeing or printing textile fibers or fabrics and for thermal transfer have the formula ##STR1## where R.sup.1 and R.sup.2 are each substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl or substituted or unsubstituted C.sub.3 -C.sub.4 -alkenyl or R.sup.1 may also be hydrogen,R.sup.3 is hydrogen or C.sub.1 -C.sub.6 -alkyl,R.sup.4 and R.sup.5 are each hydrogen, C.sub.1 -C.sub.6 -alkyl, halogen, C.sub.1 -C.sub.6 -alkoxy, amino or mono- or di(C.sub.1 -C.sub.4 -alkyl)amino, andD is a radical of the thiophene, thiazole, isothiazole, benzothiophene, thienothiophene or thienothiazole series.

Abstract: Anthraquionone dyes are transferred by diffusion or sublimation from a carrier to a plastic-coated substrate with the aid of an energy source by using a carrier on which one or more anthraquinone dyes I ##STR1## where X is hydrogen or cyano,R.sup.1, R.sup.2 and R.sup.3 independently of one another are each hydrogen,alkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl or alkoxycarbonylalkyl, each of which may be of up to 20 carbon atoms and may be substituted by halogen, hydroxyl or cyano,phenyl or benzyl, each of which may be substituted by C.sub.1 -C.sub.15 -alkyl or C.sub.1 -C.sub.15 -alkoxy anda radical of the formula II[--W--O]n--R.sup.4 IIwhereW is identical or different C.sub.2 -C.sub.6 -alkylene radicals,n is from 1 to 6 andR.sup.4 is C.sub.1 -C.sub.4 -alkyl or unsubstituted or C.sub.1 -C.sub.4 -alkyl-substituted or C.sub.1 -C.sub.4 -alkoxy-substituted phenyl, are present.

Abstract: The compounds of the general formula ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 E or unsubstituted or substituted hydroxyl or mercapto, E is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl, T is hydrogen, C.sub.1 -C.sub.4 -alkyl, a radical which can be introduced by electrophilic substitution or a radical of the formula --CH.dbd.B, in which B is a radical of a methylene-active compound or of an amine, and K is a radical of a coupling component, are very useful for dyeing synthetic fibers or plastics.

Abstract: Bichromophoric methine and azamethine transfer dyes have the formulaZ.sup.2 --Z.sup.1 --LY.sup.1 --Y.sup.2whereinL is a bridge member which does not permit any conjugation of .pi.-electrons between Z.sup.1 and Y.sup.1,Y.sup.1 and Z.sup.1 are each independently of the other aminophenylene, which may be benzofused, or heterocyclyl andY.sup.2 and Z.sup.2 are each independently of the other benzoquinoneiminyl, which may be benzofused, or heterocyclyl.

Abstract: Thiopheneazo dye I which are chiefly useful as disperse dyes for dyeing textile material, in particular polyesters, have the formula ##STR1## where the substituents are as defined in the description.

Abstract: Azo dye polymers useful in nonlinear optics contain as characteristic monomer units radicals of the formulae I, II, III and IV ##STR1## where D is the radical of a heterocyclic diazo component,R.sup.1 and R.sup.2 are each hydrogen, C.sub.1 -C.sub.6 -alkyl or substituted or unsubstituted C.sub.1 -C.sub.6 -alkoxy, and R.sup.2 may also be C.sub.1 -C.sub.4 -alkanoylamino,R.sup.3 is hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl or C.sub.3 -C.sub.4 -alkenyl,R.sup.4 is hydrogen, deuterium, methyl, trideuterated methyl or chlorine,R.sup.5 is hydrogen or deuterium,Y.sup.1 and Y.sup.2 are each substituted or unsubstituted C.sub.2 -C.sub.10 -alkylene,W is oxygen, imino or C.sub.1 -C.sub.4 -alkylimino, andX is hydroxyl, substituted or unsubstituted C.sub.1 -C.sub.6 -alkoxy, phenoxy, amino or mono- or di(C.sub.1 -C.sub.4 -alkyl)amino,and have an average molecular weight of from 1,000 to 100,000.

Abstract: Aminothiazoles of the formula ##STR1## or the tautomers thereof, where R.sup.1 and R.sup.2 are each hydrogen or together form a radical of the formula ##STR2## where T.sup.1 is hydrogen, alkyl or phenyl, T.sup.2 and T.sup.3 are each, independently of one another, alkyl or phenyl, or T.sup.2 and T.sup.3 form, together with the nitrogen atom connecting them, a heterocyclic radical, R.sup.3 is substituted mercapto or substituted amino and R.sup.4 is alkanoyl, benzoyl, cyano or ##STR3## where T.sup.4 is hydroxyl, C.sub.1 -C.sub.6 -alkoxy, amino or R.sup.3, T.sup.5 is hydrogen, alkyl or phenyl and T.sup.6 is the radical of a primary amine or of an active methylene compound, are prepared as described.

Abstract: A process for transferring methine dyes from a transfer to plastic-coated paper by diffusion with the aid of an energy source comprises using a transfer on which there is or are located one or more dyes of the formulaK--N.dbd.BwhereK is an aromatic carboxylic or heterocyclic radical andB is the radical of an acidic CH compound.

Abstract: The invention relates to a process for the preparation of (meth)acrylate polymers with side-chain, non-linear optical chromophores and molecular weights of from 5000 to 5000000, which comprises reacting polymers of (meth)acryloyl chloride in solution with D-.omega.-hydroxyalkyl chromophores of the formula (I) or the alcoholates thereof ##STR1## where D is an electron donor,A is an electron acceptor,X is CH and/or N, and m is from 2 to 11.The polymers can be used in optical components.

Abstract: Indophenol dyes of the formula ##STR1## where X is nitrogen or the radical CH,Q is a five-membered heterocyclic radical, andK is a radical of an aniline, aminonaphthalene, aminoquinoline or aminothiazole derivative, andthe radical A can be benzofused,are useful for thermal transfer processes.

Abstract: One or more indoaniline dyes are transferred from a transfer to a sheet of plastic-coated paper by diffusion or sublimation with the aid of an energy source, said indoaniline dyes having the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each independently of the others hydrogen, methyl, fluorine or chlorine,X is fluorine or chlorine, andK is an aromatic radical.

Abstract: Quinolinemethine dyes suitable for use in a thermal transfer process have the formula ##STR1## where R.sup.1 is fluorine, chlorine or bromine,R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.3 is hydrogen, fluorine, chlorine or bromine, andK is the radical of an aniline derivative.

Abstract: Thiopheneazo dyes of the formula ##STR1## where R.sup.1 is cyano, C.sub.1 -C.sub.4 -alkoxycarbonyl, phenylazo, phenylsulfonyl, formyl or the radical ##STR2## where R.sup.7 and R.sup.8 are independently of the other cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,R.sup.2 is C.sub.1 -C.sub.4 -alkyl, phenyl, halogen, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkoxycarbonyl, or R.sup.1 and R.sup.2 together are the radical (CH.sub.2).sub.3 --CO, which may be substituted by 1 or 2 methyl groups and whose carbonyl group is bonded to the thiophene ring in the ortho position relative to the sulfur atom,R.sup.3 is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,R.sup.4 is C.sub.1 -C.sub.8 -alkyl, cyclohexyl, phenoxy-C.sub.1 -C.sub.4 -alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted thienyl,R.sup.5 is C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.7 -alkyl whose alkyl chain is interrupted by 1 or 2 oxygen atoms, or C.sub.1 -C.sub.4 -alkoxy andR.sup.6 is cyanoethyl, phenylethyl or C.sub.3 -C.sub.

Abstract: Bichromophoric methine and azamethine transfer dyes have the formulaZ.sup.2 --Z.sup.1 --LY.sup.1 --Y.sup.2whereL is a bridge member which does not permit any conjugation of .pi.-electrons between Z.sup.1 and Y.sup.1,Y.sup.1 and Z.sup.1 are each independently of the other aminophenylene, which may be benzofused, or heterocyclyl andY.sup.2 and Z.sup.2 are each independently of the other benzoquinoneiminyl, which may be benzofused, or heterocyclyl.

Abstract: Novel laser-optical recording elements which can be repeatedly erased and recorded on contain recording layers (a) which exhibit enantiotropic, ferroelectric smectic liquid crystalline (S.sub.c*) behavior, so that they can be switched back and forth between two thermodynamically stable, optically distinguishable ferroelectric smectic liquid crystalline S.sub.c* order states on exposure to a laser beam of sufficient luminous power, by applying an external electric field. The recording layers (a) themselves consist mainly or exclusively of novel polymers P having chiral mesogenic side groups.

Abstract: Anthraquinone dyes I useful for thermal transfer printing have the formula ##STR1## where R is alkyl, alkoxyalkyl, aryloxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl or alkoxycarbonylalkyl, which may each contain up to 20 carbon atoms and whose carbon chains may be interrupted by form one to four oxygen atoms in ether function, or is C.sub.5 -C.sub.8 -cycloalkyl or phenyl which may each be substituted by C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy.

Abstract: A process for the preparation of 2-amino-5-formyl-4-halothiazoles by reaction, in a first stage, of thiourea with chloroacetic or bromoacetic acid in the presence of an N,N-disubstituted formamide, followed by treatment of the reaction mixture with a phosphoric trihalide and then with water in the presence of a base.