Abstract: A engineered composition and method of delivery of said composition providing effective therapy for the treatment of ulcerative colitis, and Crohn's disease.

Abstract: The invention relates to a method for the enzymatic production of a curing agent in its fluid state, e.g. liquid, comprising, in free phase, at least one oxygenated chemical species. Said method consists in bringing into contact at least one enzymatic catalysts agent, comprising at lease one peroxidase-type enzyme; an oxidizable substrate in aqueous phase that can be oxidized by the action of an oxygen donor, by catalysis by said enzymatic catalysis agent, generating said oxygenated chemical species in free phase; and said oxygen donor.

Abstract: Process for preparing double metal cyanide catalysts of the general formula (I) M2a[M1(CN)rXt]b ??(I) where M2 is preferably Co(III) or Fe(III), and M1 is preferably Zn(II), X is a group other than cyanide which forms a coordinate bond to M1 and is selected from the group consisting of carbonyl, cyanate, isocyanate, nitrile, thiocyanate and nitrosyl, a, b, r, t are integers which are selected so that the compound is electrically neutral, by reacting a) a cyanometallic acid of the general formula (II) Hw[M1(CN)r(X)t] where M1 and X are as defined above, r and t are as defined above and w is selected so that the compound is electrically neutral, with b) a readily protolyzable metal compound (IIIa) M2Rw and/or (IIIb) M2RuYv, where M2 is as defined above, the groups R are identical or different and are each the anion of a very weak protic acid having a pKa of ?20, and Y is the anion of an inorganic mineral acid or a moderately strong to strong organic acid having a pKa of from ?10 to +10, w correspon

Abstract: Novel metal-chelate complexes comprising aminocarboxylate ligands including substituted aromatic amide moieties, such as those having the formula wherein R13, A1, R1 and R2 are as defined herein, are disclosed.

Abstract: The present invention relates to a membrane-based nanofiltration process for separating sodium thiocyanate (NaSCN) from industrial solution containing impurities such as ?-sulfopropionic acid, ?-sulfopropionitrile, sodium sulfate and salts of iron and calcium in a single step to obtain a colorless aqueous solution for spinning of acrylic fiber in textile industry.

Abstract: A method of producing hypothiocyanite by combining a hypohalous acid and thiocyanate.

Abstract: A method of continuously producing a non-oxide ceramic formed of a metal constituent and a non-metal constituent. A salt of the metal constituent and a compound of the non-metal constituent and a compound of the non-metal constituent are introduced into a liquid alkali metal or a liquid alkaline earth metal or mixtures to react the constituents substantially submerged in the liquid metal to form ceramic particles. The liquid metal is present in excess of the stoichiometric amount necessary to convert the constituents into ceramic particles to absorb the heat of reaction to maintain the temperature of the ceramic particles below the sintering temperature. Ceramic particles made by the method are part of the invention.

Abstract: Amorphous inorganic particles as a dental material includes silica and inorganic oxide(s) other than silica and has high x-ray impermeability. The inorganic particles as a dental material includes silica with the content in the range from 70 to 98 weight % and oxide(s) of one or more elements selected from the group of Zr, Ti, La, Ba, Sr, Hf, Y, Zn, AL, and B, wherein 5 to 70 weight % of the silica is originated from an acidic silicic acid solution and 30 to 95 weight % of the silica is originated from a sol of silica. The inorganic particles as a dental material have an average particle diameter in the range from 1 to 10 ?m, specific surface area in the range from 50 to 350 m2/g, pore volume in the range from 0.05 to 0.5 ml/g, amorphous crystallinity as observed by x-ray diffraction, and the refractive index in the range from 1.47 to 1.60.

Abstract: A composition comprising ammonium thiocyanate and an amount of an anti-caking agent selected from amines and amine salts, which is effective to reduce the caking of the ammonium thiocyanate, is disclosed. Also disclosed is a method for reducing the caking of a composition which contains ammonium thiocyanate which comprises the step of incorporating in said composition, 0.0001-1.0% by weight, based on the weight of the ammonium thiocyanate, of an anti-caking agent selected from amines and amine salts and the use of a compound selected from amines and amine salts, as an anti-caking agent for ammonium thiocyanate. It has surprisingly been found that minor amounts of these anti-caking agents provide an excellent reduction in the caking of ammonium thiocyanate compositions.

Abstract: A cofactor having an aromatic or benzylic amino group is converted into an isothiocyanate by reaction with a compound such as thiophosgene and the isothiocyanate of the cofactor is attached to a polymer which is preferably water-soluble. When the polymer has amino groups, a thiourea bridge is formed between the polymer and cofactor and a polymer having hydroxyl groups results in a thiocarbamate bridge. The polymer may be a copolymer of vinylamine or vinylmethylamine and vinylmethylacetamide, partially alkylamine-substituted .alpha., .beta.-poly-(2-hydroxyethyl)-D,L-aspartamide, polyethyleneimine or carbohydrate. The cofactor bound to a polymer and an enzyme are contained in microcapsules or in a membrane to form an enzyme reactor.

Abstract: A method for removing sodium polysulfide from used sodium/sulfur batteries provides that the cells are granulated under protective measures, the scrap is treated in a solution of sodium cyanide and the solution obtained is treated with air. The solution then contains sodium thiocyanate and sodium hydroxide, which latter can be reacted by means of CO.sub.2 to Na.sub.2 CO.sub.3, precipitated and separated.

Abstract: Aqueous ammonium thiocyanate solutions are prepared continuously by reaction of ammonia with carbon disulfide in the presence of water using activated carbon as catalyst at pressures of from 2 to 7 bar. In this way, a very pure product can be obtained. The process can be carried out at very low cost, because both the addition of ammonia to carbon disulfide and the decomposition of the resulting ammonium dithiocarbamate can be carried out in a reactor in one step under identical conditions.

Abstract: The present invention is a composition comprising (a) thiocyanogen or a thiocyanogen halide and (b) an .alpha.,.beta.-unsaturated ketone, e.g. chloranil, in solution in (c) an inert organic solvent. The composition is useful for the introduction of thiocyanate functionality into organic compounds in the same manner as thiocyanogen or thiocyanogen chloride, but is stable over longer periods of time, i.e. one year or more.

Abstract: To produce thiosemicarbazide hydrazine is reacted with hydrogen cyanide and sulfur to form hydrazine thiocyanate, and this is then converted into the thiosemicarbazide at an elevated temperature. Advantageously, the reaction is carried out in a polar solvent.

Abstract: A process for removal of iron cyanide complex or complexes from a solution is described, the process being characterized by contact of the solution containing the complex or complexes with ammonium polysulfide or sodium polysulfide, or a mixture thereof, at a temperature of from about 110.degree. C. to about 180.degree. C.

Abstract: A process for the production of solid or dissolved alkalithiocyanate by reaction of dissolved alkalicyanide with an alcoholic sulphur suspension at the boiling point of the alcohol. The alcohol is distilled off as an azeotrope and the unreacted sulphur is separated. For the isolation of the solid product, a pH of 5-9 is adjusted in the solution obtained and thus a crystallization or evaporation is carried out.

Abstract: Effluents from cyanidation operations are treated by contacting the effluent with powdered sulphur and iron to reduce the base metal content and cyanide ion content of the effluents.

Abstract: A process for the removal of HCN from gaseous streams is described, the process being characterized by reaction of the HCN in the gaseous stream with an ammonium polysulfide solution and formation of ammonium thiocyanate in solution, precipitation and removal of sulfur from the ammonium thiocyanate-containing solution, and hydrolysis of the ammonium thiocyanate. Provision is made for recycle of hydrolysis products.

Abstract: A process for the removal of HCN from gaseous streams is described, the process being characterized by reaction of the HCN in the gaseous stream with an ammonium polysulfide solution, formation of ammonium thiocyanate in solution, decomposition of ammonium polysulfide and precipitation of sulfur from the ammonium thiocyanate solution in a stripping zone, and hydrolysis of the ammonium thiocyanate. Recycle or recovery of sulfur and hydrolysis products are contemplated.

Abstract: A process for the removal of HCN from gaseous streams is described, the process being characterized by reaction of the HCN in the gaseous stream with an ammonium polysulfide solution, formation of ammonium thiocyanate, and hydrolysis of the ammonium thiocyanate. Recycle of hydrolysis products is contemplated.

Abstract: Crystalline 2-layer lithium aluminate, especially when carried in an ion exchange resin, is regenerated for use as an extractor for Li.sup.+ values in aqueous solution, said regeneration being done by using an aqueous wash containing at least about 800 ppm Li.sup.+ ion.

Abstract: A process is provided for the preparation of thin films of cadmium sulfide by deposition of cadmium sulfide formed in the thermal decomposition of an aqueous solution of cadmium ammonia thiocyanate complex, useful particularly in the preparation of thin cadmium sulfide films on electrically-conductive substrates useful in photovoltaic cells, and on thermally-conductive substrates useful in solar energy absorbers, for energy conversion systems.

Abstract: A pigment for a color-changing heat indicator comprising a product obtained by interaction of an aqueous solution containing ions of copper and mercury with an aqueous solution of a nitrogen-containing organic compound: an amide of carbonic acid, an amide of thiocarbonic acid, a tertiary amine to give a reaction mixture which is reacted with an aqueous solution containing ions of iodine at an atomic ratio of copper:mercury:iodine equal to 2:1.5:3-5 and an amount of the nitrogen-containing organic compound equal to 0.8-8% of the total content of copper and mercury; the pigment has its critical temperature of from 38.degree. to 70.degree. C. and a heat-resistance of from 160.degree. to 180.degree. C.

Abstract: A novel intercalation compound of a graphite with a thiazyl salt represented by the formula Z.S.sub.4 N.sub.4.2SbCl.sub.5 wherein Z stands for C.sub.24, pyrolytic carbon or pyrolytic graphite is prepared by reacting a graphite material with trithiazyl trichloride and antimony trichloride in the presence of a non-polar solvent. The graphite intercalation compound thus obtained has not only an excellent stability to humidity or moisture but also a high electrical conductivity. The novel intercalation compound according to the present invention may be practically used as a novel electrically conductive material and a catalyst of organic reactions.

Abstract: The invention provides a process for the recovery of transition and post-transition metals the halides and pseudohalides of which are hyperlinearly soluble in excess halide or pseudohalide, and especially of silver as halide or pseudohalide from waste photographic paper, photographic film, and other sensitized materials.

Abstract: The present invention is directed to a method of making anhydrous lithium thiocyanate and solutions containing anhydrous lithium thiocyanate by reacting a thiocyanate reactant selected from the group consisting of inorganic ammonium thiocyanate, quaternary alkyl ammonium thiocyanates, trialkyl ammonium thiocyanates, non-lithium alkali metal thiocyanates and alkaline earth metal thiocyanates, with a lithium salt selected from the group consisting of LiClO.sub.4 ; LiAsF.sub.6 ; LiBF.sub.4 ; LiPF.sub.6 ; LiO.sub.3 SCF.sub.3 ; LiNO.sub.2 ; LiNO.sub.3 ; LiCl; LiBr; LiI; LiO.sub.2 CCF.sub.3 ; LiOC.sub.6 H.sub.5 ; LiB(C.sub.6 H.sub.5).sub.4 and LiBR.sub.4 wherein R is methyl, ethyl, butyl or mixtures thereof, in an organic solvent in which the reactants are soluble.

Abstract: The present invention is directed to a method of preparing an inorganic-alkali metal salt of the formula:ZYwherein Z is an alkali metal selected from the group consisting of lithium and sodium, and wherein Y is an inorganic radical selected from the group consisting of SCN, CN, CNS, OCN, Br, I, Cl, NO.sub.2, NO.sub.3, ClO.sub.4, ReO.sub.4, and CF.sub.3 SO.sub.3. The method involves the reaction of a nitrogen-containing compound of the formula:QHYwherein Q is selected from the group consisting of specified nitrogen-containing groups, and wherein H is hydrogen and Y is as defined above, with an alkali metal compound of the formula:ZXwherein Z is defined above and wherein X is selected from the group consisting of hydrogen, specified nitrogen-containing radicals, and specified organic radicals. The reaction is carried out in ether solvent. In a preferred embodiment, Q is NH.sub.3 and X is hydrogen.

Abstract: A process for purifying gases containing hydrogen sulfide and/or hydrogen cyanide is provided wherein said gases are contacted with an absorbing solution containing naphthols or their salts as a catalyst having a nitroso group at .alpha.-position or .beta.-position and also acidic group(s) and also having a standard redox potential in the range of 0.4 V or higher but lower than 0.7 V to remove hydrogen sulfide and/or hydrogen cyanide by converting the former mainly into thiosulfuric acid and the latter mainly into thiocyanic acid. According to this process, no trouble caused by sulfur deposit as seen in conventional method occurs, and the scale of purification apparatus is made smaller, and also the amount of catalyst required for purification is reduced. Further, by pretreating the absorbing solution, this process becomes more advantageous.

Abstract: A chromium or chromium alloy plating system and material are disclosed. The chromium is supplied by an aqueous equilibrated solution of a chromium (III) thiocyanate complex. A buffer material which also supplies one of the ligands to the chromium complex is provided. The buffer material is selected from amino acids, peptides, formates, acetates and hypophosphites.

Abstract: A process for the removal of hydrogen cyanide and of metals which form carbonyls from gases produced by partial oxidation of hydrocarbons with steam and oxygen is described involving use of an alkaline solution containing a carbonyl inhibitor in the scrubber.

Abstract: In a low temperature gas scrubbing process with a physical scrubbing solution, e.g., methanol, wherein either the H.sub.2 S containing gas-to-be-scrubbed, e.g., coal gasification gas, has a sufficient concentration of SO SO.sub.2 and/or O.sub.2 or wherein the H.sub.2 S containing scrubbing solution is brought into contact with a second O.sub.2 and/or SO.sub.2 containing gas, e.g. a stripping gas, to form elemental sulfur in the scrubbing solution, and said scrubbing solution is regenerated and then cooled to the scrubbing temperature, the improvement which comprises adding a sufficient amount of cyanides to the scrubbing solution to convert the elemental sulfur to thiocyanate, whereby sulfur is not precipitated in the scrubbing solution which would have otherwise occured, and removing the thiocyanate at least partially from the scrubbing solution. The cyanides may be added to the gas-to-be-scrubbed or the scrubbing solution, or there may be sufficient hydrocyanic acid in the gas-to-be-scrubbed at the outset.

Abstract: A process for dissolving metals, alloys or metallic compound materials in metal cyanamide and/or thiocyanate and/or cayanide and/or halide melts containing optionally metal carbonate and/or cyanide, characterized in that substances are added to the melt which form or liberate CN, and/or CNO and/or SCN radicals in the melt under the reaction conditions.

Abstract: A plating solution, the making thereof and the use for chromium plating is disclosed. The solution is an equilibrated essentially aqueous solution of a hexavalent thiocyanatochromium III complex wherein the ratio of the total chromium III to the total thiocyanate is about 1:6. A preferred and improved method of making the solution from a hexathiocyanatochromium salt is also disclosed.

Abstract: Chromium containing deposits free of cracks and having good hardness are plated by the use of a novel aqueous chromium (III) electrolyte. The electrolyte includes an aquo chromium (III)-thiocyanato complex as a source of chromium (III) cations.

Abstract: A non-linear optical frequency doubling device comprised of a laser means producing infrared light and crystal optically connected therewith for receiving such light and doubling the frequency thereof. The crystal is composed of M[Hg (SCN).sub.4 ] wherein M is selected from the group consisting of Cd and Zn.

Abstract: A process is described whereby accumulated impurities, consisting mainly of sodium tiocyanate are continuously removed from scrubbing liquors used for removal of hydrogen sulphide from fuel gases and the liquors thereby regenerated and re-used in the hydrogen sulphide scrubbing operation. The thiocyanate is removed by contacting the used scrubbing liquor with an organic solvent, e.g. n-butanol, separating the thiocyanate-bearing solvent from the scrubbing liquor, re-using the treated scrubbing liquor, recovering the thiocyanate from the solvent and re-using the solvent. The extracted sodium thiocyanate can be converted to pure, saleable chemicals or converted to an alkali which can be re-used in the absorbing liquors, thereby producing a completely closed system with no effluent.

Abstract: Ammonia, hydrogen cyanide and hydrogen sulfide contained in gas streams are separated from the gas streams by contacting the gas stream with an aqueous solution containing free oxygen for a time sufficient for the ammonia, hydrogen sulfide and hydrogen cyanide to react with the oxygen present to form ammonium thiocyanate and water for further treatment or disposal.One method of treatment is to thermally and catalytically convert for the ammonium thiocyanate to ammonia or nitrogen and hydrogen sulfide in the form of a second gas stream which is processed for recovery of any formed ammonia and the hydrogen sulfide.

Abstract: A process is disclosed for the desulfurization of gases containing hydrogen sulfide, as well as their decyanization and removal of sulfurous acid when the gases contain hydrogen cyanide or sulfurous acid and in which process a napthoquino chelate compound is employed on a component of an absorption medium.