Abstract: The invention relates to novel membrane elements, a process for their production and their use as filters, for example for ultrafiltration, nanofiltration, reverse osmosis, gas separation or pervaporation. The invention relates in particular to a membrane element comprising a core 9 and a sheath which encapsulates the core, where the sheath is formed from polymer films 10 which overlap one another at least to some extent and have been fused to one another in the overlap area.

Abstract: The present invention relates to water-dispersible polyisocyanate mixtures whicha) have an average isocyanate functionality of 1.8 to 4.2,b) contain 12.0 to 21.5% by weight of (cyclo)aliphatically bound isocyanate groups (calculated as NCO, molecular weight=42) andc) contain 2 to 20% by weight of ethylene oxide units (calculated as C.sub.2 H.sub.4 O, molecular weight=44) arranged within polyether chains, the polyether chains containing an average of 5.0 to 9.9 ethylene oxide units.The present invention also relates to the preparation of these polyisocyanate mixtures by reacting at an NCO/OH equivalent ratio of 4:1 to 120:1A) a polyisocyanate component having an average isocyanate functionality of 2.1 to 4.4 and containing one or more polyisocyanates in which all the isocyanate groups are (cyclo)aliphatically bound withB) a monovalent polyalkylene oxide polyether alcohol containing an average of 5.0 to 9.9 ethylene oxide units.

Abstract: The present invention relates to coating compositions containing(A) 70 to 98% by weight, based on the sum of components (A) and (B), of(a) isocyanate-free polymers of ethylenically unsaturated monomers and/or polyurethanes or blocked isocyanate prepolymers, and(b) optional organic solvents,wherein component (A) contains no significant quantities of groups capable of reacting with component (B) or starting materials thereof and has a viscosity (at 23.degree. C.) of 2000 to 100,000 mPa.s;(B) 2 to 30% by weight, based on the sum of components (A) and (B), of a polyaddition product prepared in and dispersed in component (A), wherein the polyaddition product is a polyurethane, polyurethane urea, polyurea, or mixture thereof, containing ionic groups and/or potentially ionic groups in a quantity corresponding to from 0.

Abstract: Disclosed are new cyclic amine derivatives of the formula I ##STR1## wherein the substituents are defined in the specification. These compounds are useful as for treating sinus tachycardia.

Abstract: The present invention is directed to a process for the production of high-gloss patent leather from two-component polyurethane compositions by reacting hydroxyl group-containing oligourethanes with polyisocyanates, characterized in that the oligourethanes have been synthesized fromA) at least 2 macrodiols in a molar ratio of about 1:6 to 6:1 wherein1) the first macrodiol has an average molecular weight of 254 to about 650 and contains an aromatic ring or a saturated or unsaturated cycloaliphatic ring and2) the second macrodiol has an average molecular weight of about 1,200 to 3,000, provided that the molecular weight of macrodiol A/2 is at least 3 times the molecular weight of macrodiol A/1, andB) at least one diisocyanate,wherein the macrodiol:diisocyanate molar ratio is about 1.0:0.9 to 1.0:0.3.The present invention is also directed to the high-gloss patent leather prepared in accordance with the above process.

Abstract: This invention relates to an aqueous coating composition containing aluminum pigments and a water dispersible polyurethane polyurea binder which contains(i) at least 200 milliequivalents per 100 g of solids of chemically incorporated carbonate groups --O--CO--O-- and(ii) a combined total of up to 320 milliequivalents per 100 g of solids of chemically incorporated urethane groups --NH--CO--O-- and chemically incorporated urea groups --NH--CO--NH--.The invention further relates to coatings prepared from the aqueous coating composition.

Abstract: The present invention relates to aliphatic polyurethanes which contain acryloyl groups, have a viscosity at 23.degree. C. of 1000 to 300,000 mPa.s as an 80% by weight solution in butyl acetate and are based on the reaction product (at an NCO/OH equivalent ratio 0.5:1 to 1:1) ofa) 1.0 mole of a polyisocyanate component containing at least 50 equivalent percent, based on NCO equivalents, of 1,6-diisocyanato-2,2,4-trimethylhexane and/or 1,6-diisocyanato-2,4,4-trimethylhexane withb) 0.7 to 1.5 moles of at least one monohydric alcohol having a molecular weight of 116 to 300 and containing acryloyl groups andc) 0.2 to 0.6 moles of at least one polyhydric alcohol having a molecular weight of 92 to 200.The present invention also relates to a process for the preparation of these aliphatic polyurethanes.

Abstract: The present invention relates to new heteroaromatic amine derivatives of general formula ##STR1## wherein the substituents are defined hereinbelow, which have valuable pharmacological properties, particularly a heart rate lowering activity and a positive inotropic activity.

Abstract: Disclosed are substituted bis(4-aminophenyl-sulfonees of general formula ##STR1## wherein R.sub.1 is hydrogen, alkyl or cycloalkyl; group,R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl,R.sub.3 is nitrile, C.sub.1 -C.sub.3 alkylaminocarbonyl, di C.sub.1 -C.sub.3 alkylaminocarbonyl, C.sub.3 -C.sub.7 N-cycloalkyl-C.sub.1 -C.sub.3 alkylaminocarbonyl C.sub.1 -C.sub.3 alkylamino, C.sub.1 -C.sub.3, di alkylaminocarbonyl alkoxy, alkylaminosulfonyl, di C.sub.1 -C.sub.3 alkylaminono, diC.sub.1 -C.sub.3 alkylaminosulfonyl, hydroxy C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkylcarbonyl, amino C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy C.sub.1 -C.sub.3 alkyl groupor, when R.sub.1 and R.sub.2 are each hydrogen, R.sub.3 can be hydroxy, hydroxycarbonyl C.sub.1 -C.sub.3 alkoxy or di C.sub.1 -C.sub.3 aminocarbonylalkoxy;or, when R.sub.1 is C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 cycloalkyl and R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl, R.sub.

Abstract: Disclosed are substituted bis(4-aminophenyl)-sulfones of general formula ##STR1## wherein R.sub.1 is hydrogen, alkyl or cycloalkyl; group,R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl,R.sub.3 is nitrile, C.sub.1 -C.sub.3 alkylaminocarbonyl, di C.sub.1 -C.sub.3 alkylaminocarbonyl, C.sub.3 -C.sub.7 N-cycloalkyl-C.sub.1 -C.sub.3 alkylaminocarbonyl C.sub.1 -C.sub.3 alkylamino, C.sub.1 -C.sub.3, di alkylaminocarbonyl alkoxy, alkylaminosulfonyl, di C.sub.1 -C.sub.3 alkylaminono, diC.sub.1 -C.sub.3 alkylaminosulfonyl, hydroxy C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkylcarbonyl, amino C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy C.sub.1 -C.sub.3 alkyl groupor, when R.sub.1 and R.sub.2 are each hydrogen, R.sub.3 can be hydroxy, hydroxycarbonyl C.sub.1 -C.sub.3 alkoxy or di C.sub.1 -C.sub.3 aminocarbonylalkoxy;or, when R.sub.1 is C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 cycloalkyl and R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl, R.sub.

Abstract: The present invention relates to new heteroaromatic amine derivatives of general formula ##STR1## wherein the substituents are defined hereinbelow, which have valuable pharmacological properties, particularly a heart rate lowering activity and a positive inotropic activity.

Abstract: The present invention is directed to aqueous coating compositions suitable for use as coating and finishing agents for surface coatings, preferably PVC or polyurethane coatings, based on sedimentation-stable polyurethane dispersions having a solids content of about 10-70% by weight wherein the polyurethane-urea solids material is based on polyester diols, low molecular weight diols and optionally triols, chemically incorporated hydrophilic groups, specific mixtures of diisocyanates and polyamine chain extenders having an average functionality of greater than 2 and wherein the aqueous preparations additionally contain alkoxylated dimethyl-polysiloxanes and water-soluble polyethylene oxides. The present invention is also directed to a process for applying top coats and finishes to surface coatings, preferably PVC or polyurethane surface coatings, wherein the above-described aqueous coating and finishing agents are used as the top coat and the coatings are cured at about 70.degree.-170.degree. C.

Abstract: The present invention relates to new naphthyl derivatives of general formula ##STR1## wherein N represents the number 1 or 2,A represents a --CH.sub.2 --, --CO--, --CH.sub.2 CH.sub.2 --, --CH.dbd.CH--, ##STR2## while the atom marked with an x is linked to the phenyl nucleus, E represents a straight chained alkylene group optionally substituted by an alkyl group,G represents a straight chained alkylene group optionally substituted by an alkyl group,L represents a bond or an oxygen atom, if G represents a straight chained alkylene group with 2 to 5 carbon atoms optionally substituted by an alkyl group,R.sub.1 and R.sub.2, which may be identical or different, represent alkyl or alkoxy groups or R.sub.1 and R.sub.2 together represent an alkylenedioxy group,R.sub.3 represents a hydrogen atom, or an alkyl or an allyl group,R.sub.4, R.sub.5 and R.sub.

Abstract: The invention relates to new imidazo-benzoxazinones of formula ##STR1## wherein the substituents are defined herein below, which compounds are useful in the treatment of cardiovascular disorders.

Abstract: The present invention therefore relates to a process for the preparation of aqueous solutions or dispersions of polyurethane-polyureas by the reaction in the aqueous phase of prepolymers which contain chemically built-in hydrophilic groups and/or external emulsifiers which are not bound chemically as well as at least two free isocyanate groups with organic compounds containing at least two primary and/or secondary amino groups, characterized in that the isocyanate prepolymer which has been hydrophilically modified and/or contains an external emulsifier is mixed, in the absence of water, with compounds containing at the most one free primary or secondary amino group and at least one blocked group which releases a free primary or secondary amino group in the presence of water and a total of at least two at least partially blocked primary and/or secondary amino groups, and the mixture is subsequently mixed with water.

Abstract: Disclosed are substituted bis(4-aminophenyl)-sulfones of general formula ##STR1## wherein R.sub.1 is hydrogen, alkyl or cycloalkyl; group,R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl,R.sub.3 is nitrile, C.sub.1 -C.sub.3 alkylaminocarbonyl, di C.sub.1 -C.sub.3 alkylaminocarbonyl, C.sub.3 -C.sub.7 N-cycloalkyl-C.sub.1 -C.sub.3 alkylaminocarbonyl C.sub.1 -C.sub.3 alkylamino, C.sub.1 -C.sub.3, di alkylaminocarbonyl alkoxy, alkylaminosulfonyl, di C.sub.1 -C.sub.3 alkylaminono, diC.sub.1 -C.sub.3 alkylaminosulfonyl, hydroxy C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkylcarbonyl, amino C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy C.sub.1 -C.sub.3 alkyl groupor, when R.sub.1 and R.sub.2 are each hydrogen, R.sub.3 can be hydroxy, hydroxycarbonyl C.sub.1 -C.sub.3 alkoxy or di C.sub.1 -C.sub.3 aminocarbonylalkoxy;or, when R.sub.1 is C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 cycloalkyl and R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl, R.sub.

Abstract: The present invention is directed to substantially linear polyurethanes obtained from 1 mol of relatively high molecular weight macrodiols such as polyesters, polyethers and polycarbonates having a molecular weight of 400 to 5000, preferably about 500 to 3000, about 1.5 to 16.5 mols of aromatic diisocyanates, optionally about 0.01 to 1 mol of chain breaking agents in the form of compounds which are monofunctional in their reaction with isocyanates, and about 0.5 to 15 mols of low molecular weight, difunctional chain lengthening agents, characterized in that at least 10 mol-% of the chain lengthening agents is 2,2,4-trimethylpentanediol-(1,3) and the remaining chain lengthening agents, having molecular weights of 62 to 399 (preferably 62 to 250), are preferably diols.

Abstract: The present invention is directed to water dispersible or soluble polyurethanes containing about 0.5 to 30% by weight, based on the weight of the polyurethanes, of ethylene oxide units present in lateral or terminal polyether chains, characterized in that in addition to these ethylene oxide units the polyurethanes contain, as further hydrophilic centers, about 0.1 to 120 milliequivalents, per 100 g of solids content, of carboxylate groups in the form of built-in structural units corresponding to the general formula ##STR1## wherein R denotes an alkyl group having 1 to 4 carbon atoms and the total quantity of carboxylate groups and ethylene oxide units present in lateral or terminal chains is calculated to ensure the solubility or dispersibility of the polyurethanes in water.The present invention also relates to a process for the preparation of these polyurethanes and to their use for coating substrates.

Abstract: The present invention is directed to a process for the production of aqueous polyurethane-polyurea dispersions by reacting NCO-prepolymers having an average NCO-functionality of 2 to 2.3 and an average molecular weight of about 700 to about 5000 with organic polyamines having an average amine functionality of 2.05 to about 3 and an average molecular weight of 60 to about 2000 containing primary and/or secondary amino groups at an NCO/NH ratio about 1.05:1 to about 7:1 in the presence of a water-miscible, weakly polar solvent inert to isocyanate groups and having a boiling point at normal pressure below 100.degree. C., converting the resulting solution of the reaction products into an aqueous dispersion by the addition of water and optionally removing the solvent used by distillation, characterized in that the reactants and amounts used are selected such that the resulting reaction products have an NCO-functionality of 2.2 to about 3 and NCO-content of about 0.1 to 5% by weight.

Abstract: The invention relates to new heteroaromatic amine derivatives of formula ##STR1## wherein A represents a --CH.sub.2 --CH.sub.2 --, --CH.dbd.CH--or ##STR2## group and B represents a methylene, carbonyl or thiocarbonyl group or A represents a --CO--CO or ##STR3## group and B represents a methylene group, in which the carbon atom marked x is linked to the phenyl nucleus,E represents a straight-chained alkylene group optionally substituted by an alkyl group,G represents a straight-chained alkylene group optionally substituted by an alkyl group,R.sub.1 represents a hydrogen, fluorine, chlorine or bromine atom, a trifluoromethyl, nitro, amino, alkylamino, dialkylamino, alkyl, alkylmercapto, hydroxy, alkoxy or phenylalkoxy group,R.sub.2 represents a hydrogen, chlorine or bromine atom or a hydroxy, alkoxy, phenylalkoxy or alkyl group orR.sub.1 and R.sub.2 together represent an alkylenedioxy group,R.sub.