Abstract: The invention relates to the use of compounds of the formula IR.sup.1 --Q.sup.1 --A--(A.sup.2).sub.q --R.sup.2 Iwherein ##STR1## and R.sup.1, R.sup.2, Q.sup.1, Q.sup.2 and q have the meaning specified in claim 1, as components of smectic liquid-crystalline phases, and also smectic liquid-crystalline phases, in particular chiral tilted smectic phases containing compounds of formula I.

Abstract: The invention relates to formulations in the form of suspensions containing sucralfate, characterized in that they contain, based on the sucralfate, 1-5% by weight of xanthan gum and 1-12.5% by weight of at least one peptiser.

Abstract: New cyclopentane derivatives of the formula I ##STR1## in which R.sup.1 is H or a hydroxyl protective group, andR.sup.2 and R.sup.3 are together an O atom or are together a bond, can be used in the preparation of prostaglandin derivatives.

Abstract: Nitrogen-containing heterocyclic compounds of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 [Z.sup.2 --A.sup.3 ].sub.n --R.sup.2whereinR.sup.1 and R.sup.2 in each case independently of one another are an alkyl group with 1-15 C atoms, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by 0 atoms and/or --CO-- groups and/or --O--CO-- groups and/or --CO--O-- groups, and one of the radicals R.sup.1 and R.sup.2 is also H, F, Cl, Br or CN,is a 1,4-cyclohexylene group, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by 0 atoms, a 1,4-bicyclo(2,2,2)-octylene group or a 1,3-dithiane-2,5-diyl group,Z.sup.1 and Z.sup.2 in each case independently of one another are --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O-- or a single bond,A.sup.2 and A.sup.3 in each case independently of one another are a 1,4-phenylene group, pyrimidine-2,5-diyl group, 1,4-cyclohexylene group, it also being possible for one or two non-adjacent CH.

Abstract: Absorbents based on optically active poly(meth)acrylamides, e.g. bonded to silica gel, can be used for separating racemic mixtures into their optical antipodes.

Abstract: In a process for the production of thin films and epitaxial layers by gas-phase deposition, intramolecularly stabilized organometallic compounds are employed as a source of metal.

Abstract: Hexasubstituted cyclohexane compounds of the formula I ##STR1## in which Z.sup.1, Z.sup.2, Z.sup.3, X.sup.1, X.sup.2, A.sup.1, A.sup.2 and A.sup.3, p, R.sup.1 and R.sup.2, m and (n+m) have the meanings given in claim 1, are suitable as components of discotic liquid-crystalline phases.

Abstract: The invention relates to a new liquid crystal display element with static or multiplex control with a low multiplex ratio and an operating voltage below 3.3 volts, containing a liquid crystal dielectric, wherein the operating temperature range extends from -30.degree. C. to +80.degree. C. and the viscosity of the dielectric at 20.degree. C. is less than 40 mPa.s.

Abstract: D-(+)-Biotin can be prepared from optically active hydantoins of the formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, X and Y have the meaning given in patent claim 1, in a simple, stereospecific manner.Furthermore bicyclic nitriles of the formula XI ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, X and Y have the meaning given represent precious intermediate products and educts of a multitude of possibilities to synthesize optically active D-(+)-biotin.

Abstract: The invention relates to a solvent for the Karl-Fischer determination of water and to a process for the determination of water using a solvent system which contains at least one higher alcohol as well as the customary Karl-Fischer solvents.

Abstract: 1,3-Cyclopentylene compounds of the formula IR.sup.1 -A.sup.1 -Z.sup.1 -A.sup.2 --(Z.sup.2 -A.sup.3).sub.n -R.sup.2 Iin which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, Z.sup.1, Z.sup.2 and n have the meaning given herein, can be used as components of liquid-crystalline phases.

Abstract: Compounds of the formula I ##STR1## wherein R.sup.1 and R.sup.2 each independently of one another are R, OR, OCOR, COOR or OCOOR,is alkyl with 1 to 15 C atoms, wherein one or more CH.sub.2 groups which are not adjacent and are not linked by O can also be replaced by --O--, --CO--, --O--CO--, --CO--O--, --CH--halogen, --CHCN-- and/or --CH.dbd.CH--,A.sup.1, A.sup.2 and A.sup.3 each independently of one another are 1,4-phenylene or trans-1,4-cyclohexylene,m, n and o are each 0 or 1,m+n+o is 0, 1 or 2,Z.sup.1 and Z.sup.2 each independently of one another are --CH.sub.2 --O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2 -- or a single bond andX is F, Cl, Br, I or CN,with the provisos given in claim 1, can be used as components of ferroelectric liquid crystal phases.

Abstract: Cyclohexane derivatives of formula I ##STR1## wherein R is an alkyl group which has 1-12 C atoms and in which one or two non-adjacent CH.sub.2 groups can also be replaced by O, --CO--O-- or --OCO--,A.sup.1 and A.sup.2 each independently of one another are trans-1,4-cyclohexylene or unsubstituted or fluorine-substituted 1,4-phenylene, and one of the groups A.sup.1 and A.sup.2 can also be a single bond,X is --CN, halogen, OH, --COOR.sup.1, --OOCR.sup.1, --COR.sup.1, --OR.sup.1 or R.sup.1 andR.sup.1 is an alkyl group which has 1-12 C atoms and in which one or two CH.sub.2 groups can also be replaced by O, but excluding direct links between two O atoms,with the proviso that, in the case of X=CN, A.sup.2 is trans-1,4-cyclohexylene or fluorine-substituted, 1,4-phenylene, are suitable as components of liquid-crystalline phases.

Abstract: A resorbable porous tricalcium phosphate, in which the pores are sealed with a filler mixture of an antibiotic and a filler, in particular an amino acid, is particularly advantageous for use in the preparation of bone cements.

Abstract: Indole derivatives of the general formula I ##STR1## in which Ind is a 3-indolyl radical which can be substituted once or twice by alkyl, O-alky, S-alkyl, SO-alkyl, SO.sub.2 -alkyl, OH, F, Cl, Br, CF.sub.3 and/or CN or by a methylenedioxy group, A is --(CH.sub.2).sub.4 -- or --CH.sub.2 --L--CH.sub.2 CH.sub.2 --, L is --S--, --SO-- or --SO.sub.2 --, and Th is a 2-- or 3-thienyl radical, and in which the alkyl groups each have 1-4 C atoms, and their physiologically acceptable acid addition salts exhibit effects on the central nervous system.

Abstract: The invention relates to a bone cement based on physiologically tolerated polymers, the incorporation of acoustic perturbation elements having a sound resistance differing from that of the polymer making it possible, in the case of a necessary re-operation, to disrupt the bone cement by the application of acoustic waves to such an extent that it can easily be removed from the implant location.

Abstract: Platelet-shaped colored pigments in which a platelet-shaped substrate is provided with a compact coating containing iron(II) oxide, which coating has a high gloss and, depending on the layer thickness, shows the interference color of thin platelets, are described.

Abstract: In mica/titanium dioxide pigments reliable rutilization is obtained with small amounts of tin by precipitating tin dioxide directly on the mica and completing this precipitation before the precipitation of titanium dioxide is started.

Abstract: Bicyclooctane derivatives of the Formula I ##STR1## wherein R.sup.1, R.sup.2, A.sup.1, A.sup.2 and Z have the meanings indicated in claim 1, are suitable for use as components of liquid-crystal phases for field effect and/or bistability effect displays.

Abstract: New bicyclohexyls of the formula IR.sup.1 --Cy--Cy--R.sup.2wherein R.sup.1 and R.sup.2 are each alkyl which has 1-10 C atoms and in which one or two CH.sub.2 group(s) can be replaced by 0 atoms, and Cy is 1,4-cyclohexylene,are suitable for use as the coponents of liquid-crystal dielectrics.