Abstract: In a process for the removal of cholesterol and cholesterol esters from egg yolk, the egg yolk is diluted with an aqueous solution of a water-soluble salt of the cation potassium or/and calcium as well as the anion chloride and/or sulfate or/and an organic anion with a molecular weight of .ltoreq.150. The diluted egg yolk is subsequently mixed with .beta.-cyclodextrin until complexation of cholesterol and cholesterol esters with .beta.-cyclodextrin has taken place. The formed complexes are separated and after separation of the complexes from the egg yolk mixture the added salt as well as, if desired, water is removed again. Low sodium egg yolk products with a low total cholesterol content and good sensorial properties are obtained.

Abstract: A process for the isolation of lipid fractions from egg products in powder form with a content of phospholipids is described in which the egg product is extracteda) with liquid propane at a pressure of .ltoreq.200 bar and a temperature of .ltoreq.70.degree. C. andb) an entraining agent consisting of an aliphatic alcohol with 1 to 4 C atoms.In this way it is possible to produce lipid fractions with good sensory properties whose content of phospholipids is at least 20% by weight.

Abstract: A process is described for the production of 2-ethoxy-4,6-dihydroxypyrimidine or its alkali salt which is an important intermediate in the field of pharmaceuticals and agrochemicals. This compound can be produced using the process according to the invention in good yields and high purity by reacting an O-ethylisourea salt that is preferably formed as an intermediate from cyanamide or chloroformamidinium salts or free O-ethylisourea with an alcoholate and a malonic acid dialkyl ester or a salt of the malonic acid dialkyl ester in alcohol and, if desired, subsequent acidification.

Abstract: In order to produce natural antioxidants by extraction of spices selected from the group of rosemary, thyme, sage and origano using compressed carbon dioxide and oreganic solventsa) these spices are de-aromatized by extraction with carbon dioxide at a pressure of 80 to 300 bar and at a temperature of 10.degree. to 80.degree. C.,b) the extraction residue obtained from step a) is treated with polar alcoholic solvents with 1 to 4 C atoms and/or non-polar hydrocarbons with 5 to 7 C atoms andc) the solvent extract obtained from step b) is treated with active carbon andd) the extract obtained from step c) is aftertreated with water at a temperature of 40.degree. to 100.degree. C. if desired after extensively removing the solvent.Antioxidants obtained in this way are almost completely neutral with regard to flavour, odor as well as colour and are more effective than synthetic antioxidants.

Abstract: A process for the extraction of fats and oils from natural substances using liquid propane as the solvent is described in which the extraction is carried out at a pressure of 10 to 30 bar and a temperature of 10.degree. to 55.degree. C. and the separation of the extracted fats and oils from the solvent is carried out by means of pressure reduction or/and temperature increase to .ltoreq.80.degree. C. High quality products are isolated in this way in a good yield and under mild conditions.

Abstract: The invention concerns an agent for treating metal melts in the form of a cored wire comprising a metallic sheath of steel or iron and a filling which contains a compound that splits off gas at the temperature of the metal melt and is based on an organic polymer in amounts of 0.2 to 20 g per meter cored wire. The invention also concerns the use of the agent for homogenizing, refining and homogeneously cooling as well as alloying metal melts.

Abstract: In order to stabilize hop products by drying at a circulating air temperature of 60.degree. to 80.degree. C. to a residual moisture content of the dried hop products of between 12 and 14% by weight, the hop product is subjected after drying to a short period of thermal irradiation or to a temperature treatment at 60.degree. to 90.degree. C. under inert gas conditions.

Abstract: The present invention relates to modifying agents for melamine-formaldehyde resins and highly reactive thermosetting resins which are prepared with this agent and consist of 1 mol of melamine, 1.5 to 3.5 mol of formaldehyde, 0.5 to 5% by weight of a polyhydric alcohol, based on the melamine plus formaldehyde, and 0.5 to 10% by weight of the modifying agent, based on the liquid resin. The modifying agent can be added to the melamine-formaldehyde resin as a pulverulent mixture before or during the condensation reaction or in the liquid state in the form of a condensation product prepared in a known manner. The modifying agent consists of 10 to 75% by weight of dicyandiamide, 5 to 70% by weight of cold water-soluble starch (soluble between about 18.degree. and about 25.degree. C.) and 20 to 85% by weight of a guanamine. The highly reactive resins modified in this way are preferably used for coating chipboard and hardboard by a short cycle process.

Abstract: A process for the production of egg yolk with a reduced cholesterol content, whereina) the egg yolk is diluted by the addition of water or of an aqueous salt solution,b) cholesterol and cholesterol esters which are contained in the diluted egg yolk are selectively complexed with .beta.-cyclodextrin,c) the .beta.-cyclodextrin loaded with cholesterol and/or cholesterol esters are separated from the diluted egg yolk,d) the added water is removed from the egg yolk,e) the residual amounts of .beta.-cyclodextrin present in the egg yolk are decomposed enzymatically with the help of .alpha.-amylase and/orf) the .beta.-cyclodextrin is recovered by treatment with water and/or an alcohol from the .beta.-cyclodextrin complexes and optionally returned to step b).

Abstract: The present invention provides a process for the removal of cholesterol from egg yolk, wherein1. a diluted egg yolk mixture is produced by the addition of an aqueous solution of ammonium carbonate or of sodium chloride,2. the diluted egg yolk mixture is mixed with a solid adsorbent or complexing agent until the cholesterol is adsorbed or complexed and thereafter3. the solid adsorbent loaded with cholesterol or the cholesterol complex is separated from the egg yolk mixture and4. subsequently ammonium carbonate or sodium chloride and possibly water is removed.

Abstract: The invention concerns a cored wire comprising a metal tube and a filling of magnesium or other pyrophoric metals passivated with from 0.5 to 5% by weight of organic nitrogen compounds. As the passivating agent, compounds from the series of the s-triazine and/or guanidine derivatives, preferably from 2 to 5% by weight of dicyandiamide, applied by means of an adhesion promoter, are preferred. The wires used in accordance with the invention serve to produce cast iron with spheroidal and vermicular graphite, to desulphurize pig iron melts or to produce metal alloys.

Abstract: A nitrification-inhibiting agent is described which is characterized in that it comprisesa) dicyandiamide andb) guanylthiourea and/or ammonium thiosulphate and/or ammonium phosphate.This agent is distinguished by an increased activity compared to the individual components and by its low toxicity.

Abstract: The present invention provides a hardner for epoxide resin masses based on dicyandiamide, wherein it containsa) dicyandiamide with a particle size of .gtoreq.90% .ltoreq.10 .mu.m. andb) 0.1 to 30% by weight of silicon dioxide and/or of an oxide of a metal of Group IIA or IIB of the Periodic Table with a large specific surface area.

Abstract: Disclosed is an agent based on ferrosilicon for the treatment of cast iron melts before treatment with spheroidal graphite-inducing elements, especially magnesium, wherein, as additive elements, the agent additionally contains calcium, aluminum, manganese, zirconium, cerium and lanthanum. The content of iron plus silicon is at least 75% by weight with reference to the weight of all components and the elements zirconium, cerium and manganese additively are at least 5% by weight of the agent. The present invention also provides a process for the production of this agent, as well as a process for treating cast iron melts therewith.

Abstract: The present invention provides a process for the preparation of N-cyanoimidocarbonates of the general formula: ##STR1## in which R.sup.1 and R.sup.2 are the same and are alkyl radicals containing up to 4 carbon atoms or R.sup.1 and R.sup.2 are joined together to give an ethylene or propylene chain which is optionally substituted by an alkyl radical containing up to 3 carbon atoms, wherein an imidocarbonate obtained in aqueous alkaline solution from the appropriate alcohol and cyanogen chloride is added with an acid to an aqueous solution of cyanamide in such a manner that the reaction mixture has a pH value of from 3 to 8.

Abstract: The present invention provides an inoculation wire consisting of a hollow wire, containing powdered ferrosilicon, with a sheeth of steel, copper, nickel or aluminum alloy, for the production of cast iron with spheroidal graphite or vermicular graphite, wherein the filling contains 1 to 50% by volume of powdered magnesium silicide.

Abstract: A curing agent for the production of low gloss powder coatings based on epoxy resins consists essentially of a mixture of the components a) 2-imidazoline derivative having a melting point of >60.degree. C. and b) cyanuric acid as well as, if desired, anticaking agents or/and stabilizers. The low gloss powder coatings produced with these curing agents have the desired low degrees of gloss and good adhesive strengths, they form smooth and uniform surfaces and show no signs of yellowing even after long stoving times.

Abstract: The present invention is directed to a process for the analytical determination of acetylcyanamide in urine. It involves (a) the separating of acetylcyanamide at from a urine matrix and/or an extract which is obtained from a urine matrix by ion exchange chromatography or reverse phase high performance liquid chromatography (HPLC), and (b) detecting the acetylcyanamide at a wavelength of 220 nm. The matrix or the extract of it is cleaned by treatment with activated carbon at pH 7 to 13, and the acetylcyanamide may be extracted from the cleaned matrix or its extract at pH 0.5 to 3.5, e.g. by liquid-liquid extraction of the acetylcyanamide. This is carried out by means of water-insoluble, organic solvent such as ethyl acetate or diethyl ether.

Abstract: The present invention provides a flocculation and/or fixing agent for paper sizing in the weakly acidic to weakly alkaline pH range, wherein it contains or consists to a preponderant amount of a mixture and/or a co-condensation product of the components cationic dicyandiamide resin and polyaluminium hydroxy compound.The present invention also provides processes for the production of this agent.

Abstract: The present invention provides a process for the production of cyanamide from urea and/or decomposition products thereof at an elevated temperature with the use of a microporous catalyst, wherein, as catalyst, there is used a zeolite and/or a silicoalumophosphate which is doped with transition metal cations selected from the Group IB and VIIB of the Periodic System. In this way, it is possible to increase the conversion, referred to urea, to 60 to 100%, the selectivity with regard to cyanamide thereby being from about 30 to 50% and with regard to the undesired melamine being .ltoreq.2%.