Abstract: The present invention relates to dental, light-curable, one-component composite compositions comprising (A) monomers, (B) fillers, and (C) initiators, the viscosity ?20 of which at 20° C. is greater than 400 Pa*s, preferably greater than 800 Pa*s and more preferably greater than 1200 Pa*s, and the viscosity ?50 of which at 50° C. is less than 150 Pa*s, preferably less than 120 Pa*s and more preferably less than 90 Pa*s, and wherein the quotient ?50/?20 of the viscosity of the composite composition at 50° C. and the viscosity of the composite composition at 20° C. is less than 0.125, preferably less than 0.1. The invention is preferably directed to dental composite compositions selected from the group consisting of dental filling materials, lining materials, luting materials and fissure sealants.

Abstract: A catalyst for removing olefins from aromatic compounds or mixtures of aromatic compounds wherein the catalyst is a naturally acidic smectite clay containing exchangeable cations wherein the naturally acidic smectite clay has a cation exchange capacity of 40 to 80 meq./100 g. and wherein the exchangeable cations include 5 to 70 meq./100 g. of Al.sup.3+ cations, a process for the preparation of this catalyst including treating a naturally acidic smectite clay with an aluminum salt solution wherein the salt solution includes Al.sup.3+ ions at a concentration of at least 10 meq./100 g. of the catalyst, and a process for the removal of olefins from aromatic compounds or mixtures of aromatic compounds using the above-described catalyst.

Abstract: A catalyst is described on the basis of acid-activated smectitic clay minerals for removing olefins from aromatic compounds or mixtures of aromatic compounds which is characterized in that the acid-activated clay mineral contains at least 5 milli-equivalents/100 g of exchangeable Al.sup.3+ cations.

Abstract: An adsorbent is described based on an inorganic support material with exchangeable mono- and divalent cations, characterized by the fact that the specific surface of the support material is >100 m.sup.2 /g, its cation exchange capacity is>30 mg-equiv/100 g, its pore volume is>0.15 m/g, the pH value of an aqueous suspension of 8 g of support material in 100 mL of H.sub.2 O is<7.5 and that at least 60, preferably at least 70% of the exchangeable mono- and/or divalent cations are exchanged by cations acting as Lewis acids, preferably Al.sup.3 + cations.

Abstract: Disclosed is a process for the ecological usage of acid effluents. Also disclosed is a sorption agent which is characterized in that an acid effluent, created from the production of fullers earth which contains as main ingredients Fe.sup.2+/3+ -, Al.sup.3+ -, Ca.sup.2+ - and Mg.sup.2+ cations and inorganic anions, is reacted with an alkali silicate. The resultant precipitate is separated in an aqueous phase and, when necessary, purified and dried. The sorption agent can be used for the bleaching of oils or for the removal of soaps, phospholipids and heavy metals from oils, specifically edible oils.

Abstract: An iodine adsorption agent is described, containing silver or a silver salt on a porous, temperature-resistant and acid-resistant organic carrier with an average pore diameter in the range from 6 to 200 nm. It has a pore diameter distribution in which 80% of the pore volume is contained in pores whose diameters lie within the range of .+-.50% about the average pore diameter.

Abstract: A sorbent based on smectitic clay minerals with originally low water uptake ability wherein the smectitic clay minerals are chemically reacted with at least one solid ion exchanger in alkaline form.

Abstract: A process for producing sorbents based on smectites for absorbing liquids is described. This process is characterized in thata) a smectite with a water content of less than 6% by weight;b) a wet mass of fibrous cellulose and inorganic pigments which forms in the treatment of waste water from paper manufacture; andc) anhydrous calcium sulfate (anhydrite) or calcium sulfate hemihydrateare mixed with one another, compressed and crushed. The quantitative ratio between the smectite (a), the wet mass (b) and calcium sulfate (c) are selected such that the water content (free water) of the granular material is less than 20% by weight.

Abstract: A process is described for producing neutral to alkaline color developer pigments for use in carbon-free transfer papers from an acid-activated smectic phyllosilicate and basically reacting chemicals. The process is characterized in that the acid-activated phyllosilicate with a layer structure which is essentially still intact is reactive without intermediate drying with the basically-reacting chemicals up to partial or complete decomposition of the amorphous silicic acid formed on the corners and edges of the phyllosilicate crystallites without significant re-exchange of the hydronium ions inserted between the layers of the phyllosilicate by alkali or earth alkali ions.The color developer pigments can be used in suspensions with concentrations from 30 to 50% by weight, preferably from roughly 38 to 48% by weight.

Abstract: A process for production of cut-off walls, characterized by the fact that a geotextile-smectite mat that contains a water-swellable smectite is introduced to a not yet hydraulically set cut-off wall composition.A further object of the invention is a geotextile-smectite mat in web form, characterized by the fact that it contains a sealing layer of water-swellable smectite between two geotextile layers and has a locking mechanism on each side edge for tight joining of the web to another web that has a complementary locking mechanism on each side edge.

Abstract: A detergent additive for commercial detergents (softener agents) that contain fabric softeners is described. This additive is based on agglomerates of a smectic laminar silicate coated with divided particles. This detergent additive is characterized in that the agglomerates are at least partially coated with particles of a cation exchanger that will pass through a screen with a mesh of about 45 .mu.m and have an average particle size of less than about 10 .mu.m, where the amount of cation exchanger particles is about 2 to 30 wt % (based on the dry weight of the uncoated agglomerates). This detergent additive may be used in the conventional detergent formulations.

Abstract: A process for the production of sorbents based on bentonite for the uptake of liquids is described. The process is characterized in that a poorly swelling bentonite with a water uptake capacity of less than 100% (in terms of the dried bentonite with a residual water content of 6 wt. %), a montmorillonite content of around 40-65 wt. % and a water content of 20-40 wt. % is homogenized with a basic-reacting alkaline metal compound by thorough kneading and converted by ion exchange to a swelling bentonite, while the pH value of the mixture is not more than 10.5, the mixture is gently dried, and the dried mixture is fragmented.

Abstract: A process for the production of sorbents based on smectite for uptake of liquids. This process is characterized in that:(a) a smectite with a water uptake capacity of less than 115% (in terms of the dried smectite with a residual water content of 6 wt.%) and a smectite content of around 40-65 wt.% and/or(b) a two-layer silicateis/are mixed with an alkaline smectite and the mixture homogenized in moist condition by intensive shearing, the mixture is gently dried, and the dried mixture is fragmented.

Abstract: A particulate composition to be used as a filling material in the heat-sensitive layer of a heat-sensitive recording material is described. The material is characterized by the fact that it occurs as fine-grained white pigments which are predominantly bound to amorphous precipitated silicic acid, whereby the amorphous precipitated silicic acid either (a) is wrapped in layers around the fine-grained white pigment or (b) occurs as fine particles that are bound to the fine-grained white pigment in a punctiform manner and whereby the water content of the material (b) is 1 to 10 percent by weight, preferably 2 to 8 percent by weight.

Abstract: A circuit for a boundary-scan cell for the JTAG Architecture, the circuit including a capture section(50) coupled in cascade to an update section(52),and each section comprising a flip-flop (34,36)having a clock input for receiving a common clock signal (TCK, TCKB) and a multiplexer having a first input for receiving an input data signal, a second input coupled to an output of the flip-flop, an output coupled to a flip-flop input, and a select input for receiving a control signal for selectively coupling the first or second input to the multiplexer output.

Abstract: A weapon throughbearing through an armored turret, especially on a military tank, accommodating a heavy weapon that can be elevated and has a barrel mounted in a cradle and extending out through an opening in the turret that is protected by a shield. The shield consists of at least two components positioned adjacently along the axis of the weapon's barrel and in the opening in the housing, with one component secured stationary to the weapon and at least one other secured stationary to the turret.

Abstract: Process for the recovery of vanadium from vanadium-containing source materials under the addition of additives, especially alkali metal compounds, particularly the carbonates, chlorides, sulfates as well as nitrates and/or mixtures of these compounds, whereby the source material is ground and roasted. The roasted material is leached and whereby the withdrawn leach solution is hydrometallurgically treated for the recovery of vanadium compounds. The source materials are first roasted without the addition of alkali additives and subsequently are leached in a first leaching step. To the residues of the first leaching step are added alkali additives and the mixture is roasted in a second roasting step. The roasting products are again leached.

Abstract: Nickel- and vanadium-containing catalysts or combustion residues from petroleum treatment are combined with alkali metal carbonates and/or chlorides and the resulting mixture is melted in the presence of a sulfur carrier with or without carbon which serves to reduce the sulfur to a sulfidic form, a high vanadium, low nickel slag segregating from a high nickel, low vanadium matte. The matte and slag can be separately tapped and the matte is treated metallurgically to recover nickel while the slag is leached and is thus treated hydrochemically to recover valuable vanadium compounds.

Abstract: A master alloy for producing titanium-based alloys with high molybdenum content and capable of ensuring the solution and distribution of the molybdenum in the titanium based alloy consists essentially of 25 through 36% by weight molybdenum, 15 to 18% by weight vanadium, up to about 7% by weight titanium, the balance aluminum and wherein the molybdenum content is at least 1.4 times the vanadium content and the melting point is at most 1500.degree. C.

Abstract: Nickel- and vanadium-containing catalysts or petroleum treatment of combustion residues are combined with alkali metal carbonates and/or chlorides and the resulting mixture is melted in the presence of a sulfur carrier with or without carbon which serves to reduce the sulfur to a sulfidic form, a high vanadium, low nickel slag seggregating from a high nickel, low vanadium matte. The matte and slag can be separately tapped and the melt is treated metallurgically to recover nickel while the slag is leached and is thus treated hydrochemically to recover valuable vanadium compounds.