Abstract: A partially conjugated polymer comprises repeating units of the formula (I), where the symbols have the following meanings: A are identical or different and are each from zero to eight identical or different arylene and/or heteroarylene and/or vinylene and/or acetylene groups which, like the spirobifluorene framework, may be substituted or unsubstituted. Polymers comprising repeating units of the formula (I) are suitable, for example, as electroluminescence materials. They display, inter alia, a high color purity of the emission, good film-forming properties and a high solubility.

Abstract: Hetero-spiro compounds of the formula (I), where &PSgr; is an element of the 4th main group of the Periodic Table with the exception of carbon, preferably Sn, Ge or Si, particularly preferably Ge or Si, and K1 and K2 are, independently of one another, conjugated systems, for use in electroluminescence devices. The compounds of the formula (I) have a good solubility in customary organic solvents, improved film-forming properties and a significantly reduced tendency to crystallize.

Abstract: A process for preparing polymerizable biaryl derivatives comprises reacting an aromatic comprising a 6-membered ring which bears ester or benzylic OH groups in the 1,4 position with a second aromatic in a palladium-catalyzed cross-coupling reaction to give a biaryl and converting the ester or benzylic OH groups into polymerizable groups in one or more steps. The biaryls obtained are suitable for preparing polymers which are used as electroluminescence materials.

Abstract: Ordered poly(arylene-vinylene)terpolymers, process for their preparation and their use as electroluminescence materials Poly(arylene-vinylene) terpolymers comprising repeating units of the formula (I), where the symbols have the following meanings: Ar1, Ar2, Ar3 are identical or different and are monocyclic or polycyclic, substituted or unsubstituted aryl or heteroaryl groups which may be linked via one or more bridges or be fused, R1, R2, R3, R4, R5, R6, R7, R8 are identical or different and are each H or a hydrocarbon radical having from 1 to 22 carbon atoms which may be substituted, preferably by F, and may also contain heteroatoms, preferably O, are suitable as electroluminescence materials.

Abstract: Poly(paraphenylenevinylene) derivatives and their use as electroluminescence materials

Abstract: An optical brightener comprising one or more spiro compounds of the formula (I), where K1 and K2, which are identical or different, are conjugated systems, and &psgr; is C, Si, Ge, Sn or Pb, is notable for high fluorescence quantum yields and a high temperature stability.

Abstract: A novel polymer comprising oligo-p-phenylene units and having formula (A.sub.k B).sub.n is disclosed, wherein A and B have the following chemical structure: ##STR1## Y are identical or different and are each (E)--CR.sup.9 .dbd.CR.sup.10 --, --C.dbd.C-- or --CHR.sup.11 --CHR.sup.12 ;R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11, R.sup.12 are, independently of one another, identical or different in the individual structural elements and are each H, a straight-chain or branched alkyl group having from 1 to 22 carbon atoms, or an aryl or aryloxy group, or Br, Cl, F, CN or alkyloxycarbonyl having from 2 to 23 carbon atoms;k is from 1 to 25,n is from 1 to 200.The polymer of the present invention may be used as an electroluminescence material.

Abstract: The invention relates to polymers which form cholesteric phases, to a process for their preparation and to their use.Novel polymers and oligomers which form cholesteric phases essentially consist, as molecular building blocks, ofA. at least one bifunctional chiral molecular building block which contains at least one cyclic structural element other than a monosubstituted p-phenylene group,B. at least one bifunctional achiral or racemic molecular building block which contains at least one cyclic structural element containing at least four ring members, andC. at least one bifunctional molecular building block which can be either chiral or achiral, cyclic or acyclic, and is different from the molecular building blocks A and B actually employed,with the proviso that the molecular building block A is not derived exclusively from camphoric acid.

Abstract: The invention relates to nitrogen-containing polymers containing structural units of formula (I), ##STR1## where the symbols and indices have the following meanings: Ar.sup.1, Ar.sup.2, Ar.sup.3 are, identically or differently, mono- and/or polynuclear and/or condensed aryl and/or heteroaryl groups which may or may not be linked via one or more bridges carbon atoms, which may or may not be substituted;X is a single bond, --O--, --S--, --SO--, --SO.sub.2, NR.sup.3, --CR.sup.4 R.sup.5 --, --CO--, --CR.sup.6 .dbd.CR.sup.7, CR.sup.8 R.sup.9 --CR.sup.10 R.sup.11 or SiR.sup.12 R.sup.13 ;R.sup.1 -R.sup.13 are, identically or differently, H, a hydrocarbon radical having from 1 to 22 carbon atoms or Ar.sup.4, where Ar.sup.4, identical with or different from Ar.sup.1, has the same meanings as Ar.sup.1 ;n=1, 2 or 3.

Abstract: A conjugated polymer comprising repeating units of the formula (I), ##STR1## where the symbols and indices have the following meanings: .PSI. is an element of the 4th main group of the Periodic Table with the exception of carbon;D, E, F, G are identical or different and are --CR.sup.1 R.sup.2 --, --O--, --S--, --NR.sup.3 -- or a chemical bond;U is --CR.sup.4 .dbd.CR.sup.5 -- or a chemical bond;V is as defined for U or is --CR.sup.1 R.sup.2 --, --O--, --S--, --NR.sup.3 --, --SiR.sup.1 R.sup.2 --, --SO.sub.2 --, --O--, --CO--;A are identical or different and are H, a C.sub.1 --C.sub.20 -hydrocarbon radical which can also contain heteroatoms;T is --O--, --S--, --NR.sup.3 --, --CR.sup.1 R.sup.2 --, --CH.dbd.N--, --CA.dbd.CA--, --CH.dbd.CA--, --CH.dbd.CF-- or --CF.dbd.CF--;K, Q are identical or different hydrocarbon radicals which can contain heteroatoms and have conjugated electron systems;M, L are H or a straight-chain or branched alkyl group having from 1 to 22 carbon atoms, Br, Cl, F, CN, NO.sub.2 or CF.sub.

Abstract: A process for preparing an effect coating having a perceived color which is dependent on the viewing angle, which comprises applying one or more non-curable cholesteric liquid-crystalline polymers, or at least one non-curable nematic liquid-crystalline polymer and at least one non-curable cholesteric liquid-crystalline polymer, in the form of a melt or in solution, to the article that is to be coated, and converting the applied polymer by temperature treatment into a film having a perceived color which is dependent on the viewing angle.

Abstract: An electroluminescence material comprising one or more polymers which comprise structural units of the formula (I), ##STR1## where the symbols and indices have the following meanings: Ar.sup.1, Ar.sup.2, Ar.sup.3, Ar.sup.4, Ar.sup.5, Ar.sup.6 are identical or different, monocyclic and/or polycyclic aryl and/or heteroaryl groups which may be linked via one or more bridges and/or be condensed and may be unsubstituted or substituted, where Ar.sup.1, Ar.sup.3, Ar.sup.5 and Ar.sup.6 are each divalent and Ar.sup.2 and Ar.sup.4 are each monovalent;R.sup.1 is H, a hydrocarbon radical having from 1 to 22 carbon atoms, which may be unsubstituted or substituted, preferably by F, and can also contain heteroatoms, preferably 0, or Ar.sup.7, where Ar.sup.7 is, independently of Ar.sup.1-6, as defined for Ar.sup.1-6 ;n is 0, 1 or 2.The electroluminescence material of the invention has, inter alia, a low threshold voltage of the electroluminescence and a high efficiency, although the polymers are not conjugated.

Abstract: Polymers containing spiro atoms which can be used as electroluminescence materials, suitable for use in ligerting or display devices, and which improve the property profile of these devices. Specifically, a conjugated polymer comprising structural units of the formula (I), ##STR1## where the symbols and indices have the following meanings: D, E, F.sup.1, G are identical or different, and are --CR.sup.1 R.sup.1 --, --O--, --S--, --NR.sup.3 -- or a chemical bond;Ar.sup.1, Ar.sup.2 are carbocycles or heterocycles;U.sup.1, V.sup.1 are identical or different, and are --CR.sup.5.dbd.CR.sup.6 --, --CR.sup.7 R.sup.8 --, --CR.sup.9 R.sup.10 --CR.sup.11 R.sup.12 --, --NR.sup.13 --, --SiR.sup.14 R.sup.15 --, --O--, --S--, --SO--, --SO.sub.2 --, --CO-- or a chemical bond;Ar.sup.5, Ar.sup.6, X, Y.sup.1 are identical or different, and are cyclic or acyclic, conjugated hydrocarbons and X and/or y.sup.1 can also be H or R.sup.

Abstract: Cycloolefin copolymer having a solution viscosity (eta)>=0.25 dl/g, A) comprising polymerized units of at least one polycyclic olefin, B) polymerized units of at least one olefin which comprise at least one double bond and, if desired, C) polymerized units of one or more acyclic monoolefins, wherein the equivalent weight with regard to olefinic double bonds is less than or equal to the number-average molecular weight, and which additionally contains at least one repeating unit which possesses at least two electron withdrawing groups. The cycloolefin copolymer is suitable as a coating composition and as an additive.

Abstract: Conjugated polymers comprising recurring units of the formula (I), ##STR1## where the symbols and indices have the following meanings: .psi. is an element of the 4th main group of the Periodic Table with the exception of carbon;D, E, F, G are identical or different and are each, for example, --O-- or a chemical bond;U is, for example, a chemical bond;V is, for example, as defined for U or is --O--;A are identical or different and are each, for example, H or a C.sub.1 -C.sub.20 -hydrocarbon radical;T is, for example, --O-- or --CA.dbd.CA--, where A is as defined above;K, L, M, Q are identical or different and are hydrocarbon radicals which can contain heteroatoms and have conjugated electron systems;m, n are identical or different and are 0, 1, 2, 3 or 4;are suitable as electroluminescence materials.

Abstract: Conjugated polymers comprising recurring units of the formula (I), ##STR1## A, B, C, D are identical or different and are each from one to fifteen identical or different arylene and/or heteroarylene and/or vinylene groups which, like the spirobifluorene skeleton itself, may be unsubstituted or substituted;S are identical or different substituents;m, n are 0 or 1.The polymers of the invention having the formula (I) are suitable as electroluminescence materials and have, in particular, a high color purity of the emission.

Abstract: A semipermeable, porous, asymmetric membrane containing a polyetheramide which contains at least one or more dicarboxylic acid derivatives and aromatic diamines having a portion. The membrane is suitable for applications where contamination by glycerol or other platicizers or pore fillers must not be tolerated, may be dried without using a pore filler such as glycerol, does not collapse upon drying, and are sufficiently hydrophobic to be wetted again after complete drying.

Abstract: Thermoplastically processable aromatic polyether amideThermoplastically processable aromatic polyether amide of the formula (I) ##STR1## in which the symbols Ar, Ar', Ar.sub.1, Ar.sub.2, R, R', Y, x, y and z have the following meanings:Ar is a divalent, substituted or unsubstituted, aromatic or heteroaromatic radical or a group--Ar*--Q--Ar*--in whichQ is a bond or an --O--, --C(CH.sub.3).sub.2, --CO--, --S--, --SO-- or --SO.sub.2 -- bridge and Ar* is an aromatic radical. The carbonyl groups of the Ar radical are on non-adjacent ring carbon atoms.A is up to three different radicals.Ar' has the meaning given for Ar or is an Ar--Z--Ar group.In this case, Z is a --C(CH.sub.3).sub.2 -- or --O--Ar*--O--bridge.Y is a --C(CH.sub.3).sub.2 --, --SO.sub.2 --, --S-- or a --C(CF.sub.3).sub.2 --bridge and has up to two different meanings in the same polymer.Ar.sub.1 and Ar.sub.2 are identical or different from one another and are each a substituted or unsubstituted para- or meta-arylene radical.

Abstract: Aromatic copolyamides, process for preparing them and their use for the production of shaped structuresAromatic copolyamide which is soluble in organic solvents, and a process for its preparation, which contains the recurring structural units (I), (II) and (III) ##STR1## to the extent of at least 90 mol % and 0 to 5 mol % of end groups of the structural units (IV) ##STR2## The sum of the molar proportions of (II) and (III) is in the ratio of 0.9:1 to 1.1:1 to the molar proportion of (I), and at the same time the molar proportions of (II) and (III) are in a ratio to one another of 60:40 to 10:90.The copolyamides are suitable for the production of shaped articles or for coatings and for the production of fibers, membranes and films.

Abstract: Organometallic compounds and/or metal carbonyls are separated from their solutions in organic media with the aid of semi-permeable membranes made of aromatic polyamides.