Abstract: The present invention relates to a sensor with a novel construction for a detection method of molecules labelled with fluorescent dye for detecting these dissolved substances or analytes by energy transfer with a simple fluorescence technique and increased sensitivity in the detection as well as versatile use for different tasks and the possibility of reproducible preparation of films bound to solid surfaces.

Abstract: The process relates to the production of tamperproof documents by laminating an information carrier on one or both sides with foils which have an adhesive layer which is hardened by radical cross-linking.

Abstract: A water-dispersible urethane acrylate binding agent which comprises a reaction product of: (A) 1 gram equivalent NCO of a di- or tri-isocyanate; (B) from 0 to 0.7 gram equivalent OH of a polyol, free of organically bound sulphur; (C) from 0.1 to 0.7 gram equivalent OH of a hydroxy-(C.sub.2 -C.sub.6 alkyl)-acrylate; and (D) from 0.01 to 0.5 gram equivalent NH of an amino sulphonic acid or an alkali metal or an alkaline earth metal salt thereof having from 1 to 4 amino groups per sulphonic acid group; the ratio of NCO group: NCO-reactive groups being from 1:1 to 1:1.2 which are prepared by reacting components (A), (B), (C), and (D) in a ratio of NCO groups:NCO-reactive groups of from 1:1 to 1:1.2 at a temperature of from 20.degree. to 100.degree. C.

Abstract: Compounds added to initiate photopolymerization of monomers to produce polymeric coatings include compounds of the formula ##STR1## wherein Ar is phenyl or naphthyl,R is hydrogen, alkyl with 1-4 carbon atoms, alkoxy with 1-4 carbon atoms, halogen, dialkylamino with 1-4 carbon atoms in each alkyl group, carboxyl, or alkoxycarbonyl with 1-4 carbon atoms in the alkoxy group,X is alkyl having 3 to 6 carbon atoms or alkyl having 6 to 72 carbon atoms interrupted by at least one member selected from the group consisting of ##STR2## and the precursor of X being a polyol having 3 to 6 hydroxyls and having a hydroxyl number of from 100 to 1850,R.sub.1 is hydrogen or methyl,n is a number with a value from about 2 to about 5, andn+m is a number with a value from about 3 to about 6.

Abstract: Resist lacquers crosslinking under the influence of electron beams of which the active constituents is a copolymer of (A) 10 to 90 moles of a C.sub.1 -C.sub.20 alkyl ester of acrylic acid and/or methacrylic acid; (B) 0 to 50 moles and, preferably 10 to 50 moles, of a hydroxyl-group-containing C.sub.1 -C.sub.10 alkyl ester of acrylic and/or methacrylic acid, and (C) 3 to 70 moles and, preferably 10 to 50 moles, of a monomer which contains the structural element ##STR1## wherein ##STR2## --O-- and Ar is an aromatic radical.

Abstract: Stable non-aqueous dispersions having a high solids content which can rapidly be dissolved in water without forming lumps consist of water-soluble polymers, dispersing oil, sorbitan fatty acid esters and ehtoxylation products of fatty acids and/or fatty alcohols. The dispersions may be used, for example, as flocculating agents, retention agents, drilling auxiliaries and flooding additive.

Abstract: The invention concerns agents for protecting the skin against UV-radiation, said agents comprising an oil or wax having dissolved therein a compound of the formula ##STR1## in which R is an n-hexyl, n-octyl or n-decyl radical or a primary isoalkyl radical with 9 or 10 carbon atoms.

Abstract: Compounds added to initiate photopolymerization of monomers to produce polymeric coatings include compounds of the formula ##STR1## wherein Ar is phenyl or naphthyl,R is hydrogen, alkyl with 1-4 carbon atoms, alkoxy with 1-4 carbon atoms, halogen, dialkylamino with 1-4 carbon atoms in each alkyl group, carboxyl, or alkoxycarbonyl with 1-4 carbon atoms in the alkoxy group,X is alkylene having 3 to 6 carbon atoms or alkylene having 6 to 72 carbon atoms interrupted by at least one member selected from the group consisting of ##STR2## and the precursor of X being a polyol having 3 to 6 hydroxyls and having a hydroxyl number of from 100 to 1850,R.sub.1 is hydrogen or methyl,n is a number with a value from about 2 to about 5, andn+m is a number with a value from about 3 to about 6.

Abstract: The invention relates to membranes which consist of aromatic polyamides containing disulphimide groups and have relative viscosities .eta..sub.rel of .gtoreq.1.4 as measured on a 0.5% N-methylpyrrolidone solution at 20.degree. C., and which may be used for ultrafiltration and inverse osmosis. The membranes of these polyamides according to the invention have a high permeability to water, for example, a throughflow of 1000-5000 1/m.sup.2 d under a pressure of 20 bars, and a high retention capacity for dissolved substances.

Abstract: A positive electron beam resist lacquer binder which comprises polymerized or copolymerized units of: (A) 0 to 95 mol-% of at least one alkyl ester of methacrylic acid having from 1 to 20 carbon atoms in the alkyl moiety; (B) 5 to 100 mol-% of at least one monomer corresponding to Formula (I) ##STR1## wherein n is zero or one and one of the groups, X and Y is always a hydrogen atom and X or Y denotes a phenyl or naphthyl group substituted by at least one halogen atom, or a phenyl or naphthyl group substituted by at least one alkyl group having from 1 to 8 carbon atoms, alkoxy group having from 1 to 8 carbon atoms, carboxyl group, cyano group, carboxyalkyl group having from 1 to 4 carbon atoms in the alkyl moiety, or alkylcarbonyl group having from 1 to 8 carbon atoms in the alkyl moiety, provided that when n is one, at least one of X or Y is a hydrogen atom and the other of X or Y; if not a hydrogen atom, is as hereinbefore defined or a halogenoalkylcarbonyl group having from 1 to 4 carbon atoms in the alkyl

Abstract: Air-drying unsaturated coating compositions are obtained by reacting at least 60% of the epoxide groups of a polyepoxid with more than one epoxid group per molecule(a) with 0.01 to 0.5 NH-equivalents, based on one epoxide group of ammonia, an aliphatic or cycloaliphatic primary or secondary amine and subsequently(b) with 0.99 to 0.5 carboxyl equivalents, based on one epoxide group of acrylic or methacrylic acid.The reaction products may be mixed with solvents and/or copolymerizable monomers and are preferably hardened in the presence of known photoinitiators with the aid of energy radiation.Their particular advantages are their stability in the dark and that they also harden very quickly in the presence of atmospheric oxygen.Preferred substrates are paper and cardboards.

Abstract: A disulphimide group-containing acrylonitrile copolymer semi-permeable membrane which comprises:(A) from 99 to 50% by weight of acrylonitrile units;(B) from 1 to 50% by weight of units of an acrylonitrile-copolymerizable ethylenically unsaturated monomer containing one or two disulphimide groups; and(C) from 0 to 30% by weight of units of one or more other acrylonitrile-copolymerizable olefinically unsaturated monomer, the sum of the percentages amounts to 100.The semi-permeable membranes may be used in reverse osmosis and ultrafiltration.

Abstract: The application relates to a process for the preparation of pigment concentrates, preferably pulverulent pigment concentrates, which is characterized in that the polymer present in an intimate mixture, free from non-ionic surface-active agents, of an aqueous pigment suspension and an aqueous latex of a polymer or polycondensate containing carboxyl groups, or an aqueous solution of a polymer or polycondensate containing carboxyl groups, is coagulated by adding an electrolyte, while thoroughly mixing intensively, and the coagulate containing the pigment is then separated off in a known manner and optionally dried.The pigment concentrates are suitable for pigmenting aqueous media and printing pastes for pigment printing of textiles.

Abstract: In the homogeneous coating of a titanium dioxide pigment with an organic polymer in which an aqueous solution of a polymer containing carboxyl groups is added to a dispersion of titanium dioxide in water, the polymer is applied to the pigment, the coated pigment is separated off from the aqueous medium, washed, dried and, optionally ground, the improvement which comprises employing as the polymer a polymer of the formula ##STR1## in which R.sub.1 each independently is hydrogen or methyl,R.sub.2 is hydrogen, or alkyl or cycloalkyl containing from 1 to 8 carbon atoms,M is sodium or potassium,R.sub.3 is hydrogen, alkyl or cycloalkyl containing from 1 to 12 carbon atoms, or hydroxyalkyl containing from 2 to 6 carbon atoms,m=0.2 to 1.5, andn=0 to 0.5,the polymer being added to the titanium dioxide dispersion in the form of a weakly alkaline aqueous solution in about 0.05 to 2.5% by weight based on the titanium dioxide.

Abstract: A radiation-hardenable binder consisting of a reaction product of:(A) 1 gramme equivalent of NCO of a polyisocyanate containing 2 to 3 isocyanate groups per molecule,(B) 0 to 0.7 gramme equivalents of OH of a polyol containing at least 2 OH-groups per molecule, free from organically combined sulphur,(C) 0.01 to 0.7 gramme equivalents of OH of a hydroxyalkyl acrylate containing 2 to 6 carbon atoms in the alkyl group characterized in that the reaction product additionally has incorporated therein:(D) 0.01 to 0.3 gramme equivalents of OH of a polyol containing thio or dithio groups or thio and dithio groups, with at least 2 OH-groups per molecule,the sum of the OH gramme equivalents B to D is from 1 to 1.2, and the content of organically combined sulphur, derived from the thio and dithio groups, is from 0.01 to 10% by weight, based on the binder.

Abstract: High molecular weight aromatic polycarbonates having molecular weights M.sub.w (weight average) of between about 10,000 and 200,000, which are based on diphenols and monofunctional chain stoppers, which correspond to the general formula ##STR1## in which Z denotes the radical of a diphenol,n denotes an integer from 20 to 400,E denotes ##STR2## m is 0 or 1 and R denotes a hydrogen atom or a C.sub.1 to C.sub.3 alkyl group, and in which between about 0.5 and 5 mol % of Z are radicals of aromatic dihydroxyketones. These polycarbonates share mechanical and thermal properties with known polycarbonates but in addition are suitable for crosslinking, for example in the presence of photoinitiators and optionally photo-reducing agents and under irradiation with UV light. When crosslinked they are resistant to organic solvents and insensitive to stress-cracking, and have particularly good flame-repellent properties when additionally incorporating flameproofing agents.

Abstract: Amines, amides and amidines work as accelerators for polymerization reactions with initiators of the 1.2-diphenyl ethane type.

Abstract: Mixtures active as initiators for radical polymerization reactions comprising(1) from 1 to 99% by weight of a substituted diphenyl ethane; and(2) from 99 to 1% by weight of an organic peroxide,and a process for desensitizing organic peroxides.

Abstract: For photopolymerization, glass cylinders through which a mechanically stirred stream of ethylinically unsaturated monomeric material continually flows are irradiated from the exterior with light which initiates polymerization.

Abstract: The invention provides impression materials for use in dentistry comprising the reaction product of (a) a diisocyanate or triisocyanate, (b) a dihydroxy compound having a molecular weight of from 300 to 10,000 and (c) an unsaturated monohydroxy compound. The invention also includes processes for preparing said impression materials.