Abstract: Liquid Crystal Molecules Comprising Hydroazulene Structures Compounds of formula (I); R1i-A1i-(Z2i-A2i)m-(Z3i-A3i)n-(Z4i-A4i)o-R2i (i) wherein at least one of the divalent groups Ai is derived from at least partially hydrogenated azulene, R1i and R2i being hydrogen, an optionally substituted alkyl or alkylene residue, R2i also standing for —CN, —N?C?S, —F, —Cl, —SF5, —CF3, —CHF2, CH2F—O—CF3, —O—CHF2, —O—CH2F, —O—CF2—CF2H, or —O—C2F5, A1i, A2i, A3i and A4i being partially or completely hydrogenated 2,6-azulene, trans-1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-14-phenylene, 2,3- and 2,6-difluoro-1,4-phenylene, and 3,5-difluoro-1,4-phenylene, pyrimidine-2,5-diyl, and 1,4-dioxane-2,5-diyl, Z1i, Z2i, Z3i and Z4i being a single bond, —CH2—CH2—, —CF2—CF2—, an ester bond —CO—O—, trans and —CF2—O—, m, n and 0 being independently 0, 1, or 2, liquid crystal media comprising these compounds and liquid crystal displays made with mixtures comprising the novel compounds.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: Described are matrix liquid crystal displays having two plane parallel support plates which together with a frame form a cell, integrated non-linear elements for switching individual picture elements on the support plates and a nematic liquid crystal mixture which is present in the cell and has a positive dielectric anisotropy and high resistivity. The liquid crystal mixture has a nematic phase range of at least 60° C., a maximum viscosity at 20° C. of 30 mPa·s and a mean dielectricity constant ??8. The liquid crystal mixture contains: a) at least 10% by weight of a liquid-crystalline component B having one or more compounds of the following formulae: and b) up to 90% by weight of a liquid-crystalline component A having one or more compounds with a dielectric anisotropy of ?1.5 to 1.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: Organometallic aluminum compounds of the general formula (I) where X1 is NH, NH2*, NH—A*, N—A, N(A)2*, O, OA*, O-Aryl*, S, SA*, P, P(A)2* or a single bond, X2 is NH, N—A, O, S, PA or X1 coordinated to Al(R1)3, or a single bond, R1 is H; Hal if n=0; A which may be covalently bound to Al; Si(A)3 if X1=O, R2 is A or divalent aryl groups defined note particularly below or divalent unsaturated aliphatic groups defined more particularly below, R3 and R4 are, independently of one another, a bond or R2 or Si(A)3 or Si(A)2, Z1 is a bond or H bound to R2, Z2 is a bond or H bound to R2 or R3, A is branched or unbranched C1-C7-alkyl, C1-C7-alkylidene or C1-C7-alkenylidene, Aryl is phenyl, naphthyl, Hal is F, Cl, and, independently of one another, n, m, p and l are 0 or 1 and q is 1 or 2, where &Sgr;l+m+n≧3.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: The invention relates to a process for the preparation of cyclic perfluoroalkanebis(sulfonyl)imides and salts thereof.The new compound lithium cyclo-difluoromethanebis(sulfonyl)imide is outstandingly suitable as a conductive salt in non-aqueous electrolytes for lithium secondary batteries.

Abstract: The invention relates to a process for preparing lithium intercalation compounds by thermal solid state reaction of mixtures of lithium hydroxide or lithium oxide and oxides or oxide precursors of transition metals. A significant step of this process is the treatment of an aqueous suspension of the raw material components lithium hydroxide or lithium oxide and metal oxide or metal oxide precursors with hydrogen peroxide, resulting in the lithium compound going into solution. In the drying of the mixture, the lithium hydroxide is very uniformly absorbed onto the metal oxide. Calcination at temperatures between 450.degree. C. and 700.degree. C. results in complete reaction to form the lithium intercalation compound in less than 5 hours.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: The invention relates to a process for preparing lithium intercalation compounds by thermal solid state reaction of mixtures of lithium hydroxide or lithium oxide and oxides or oxide precursors of transition metals. A significant step of this process is the treatment of an aqueous suspension of the raw material components lithium hydroxide or lithium oxide and metal oxide or metal oxide precursors with hydrogen peroxide, resulting in the lithium compound going into solution. In the drying of the mixture, the lithium hydroxide is very uniformly absorbed onto the metal oxide. Calcination at temperatures between 450.degree. C. and 700.degree. C. results in complete reaction to form the lithium intercalation compound in less than 5 hours.

Abstract: The invention relates to the use of intramolecularly stabilized organometallic compounds as components in coordination catalyst systems, corresponding coordination catalyst systems and processes for the preparation of polymers by coordination polymerization of unsaturated hydrocarbons by catalysed metathesis of alkenes and alkynes using such coordination catalyst systems.

Abstract: Moldings, preferably comprising polyester which contains oxide particles which have been subjected to a surface modification with a silylating agent of the formula I?R.sup.1 R.sup.2 R.sup.3 !Si--(CH.sub.2).sub.l --X--R.sup.4 (I)whereinR.sup.1 is Cl or alkoxy having 1 to 6 carbon atoms,R.sup.2 and R.sup.3 are alkyl having 1 to 6 carbon atoms or R.sup.1,l is a number from 1 to 6,X is a single bond, O, NH, CONH or NHCONH,R.sup.4 is ##STR1## where Y is CH, ##STR2## Z is OR or two radicals Z together are --O-- or NR and m and n are a number from 0 to 6, or R.sub.4 is ##STR3## where X is a single bond and R, R' and R" are H or alkyl having 1 to 6 carbon atoms,and the use of said moldings are described.

Abstract: The invention relates to the use of cyclic organometallic compounds as components in coordination catalyst systems, to corresponding coordination catalyst systems and also to processes for the preparation of polymers by coordination polymerization and of unsaturated hydrocarbons by catalyzed metathesis of alkenes and alkynes using such coordination catalyst systems.

Abstract: The invention relates to the use of momodisperse, non-porous, spherical particles based on SiO.sub.2, TiO.sub.2, ZrO.sub.2, Al.sub.2 O.sub.3, V.sub.2 O.sub.5, Nb.sub.2 O.sub.5 or mixed systems thereof, which are optionally modified on the surface by covalently bonded organic groups, as fillers in organic matrix materials, the refractive index of the particles being adapted to the refractive index of the organic matrix according to the use.Polymeric or polymerizable systems which comprise these particles can be used, for example, as embedding compositions for optical, electro-optical and optoelectronic components. Such embedding compositions show an improved optical homogeneity. Light-emitting diodes produced with them are distinguished, inter alia, by an improved light yield.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: The invention relates to oxide particles which have a surface modification by covalently bonded organic groups which allow covalent bonding into polymer materials. These particles are particularly advantageous in their use as fillers or modifying agents in polymer materials, in particular polymer films.

Abstract: The invention relates to the use of boron-containing organic group-V compounds for the deposition of the elements of the Vth main group on substrates by gas-phase deposition.