Abstract: A flush toilet deodorizing device includes an intake port part forming an intake port intaking air; an exhaust port part forming an exhaust port exhausting deodorized air; a fan device provided in a deodorizing air channel, the deodorizing air channel linking the intake port and the exhaust port and allowing air to flow; a water deodorizing part provided in the deodorizing air channel, the water deodorizing part using water to deodorize a suctioned air; and an oxidation catalyst provided in the deodorizing air channel.

Abstract: Compositions include a polythiol and a wetted filler. The composition comprises from 0.1 wt % to 10 wt % water based on the total weight of the composition. The compositions exhibit an extended working time and a rapid onset of cure. The compositions can be used as sealants.

Abstract: A method of producing an organopolysulfide or salt thereof is provided which includes a step of mixing an organomonosulfide or salt thereof and elemental sulfur, wherein the mixing is carried out at a temperature not greater than 95 C and in the absence of any added liquid phase for a time effective to produce the organopolysulfide or salt thereof. The described method makes possible the preparation of organopolysulfides and organopolysulfide salts without the use of solvent or catalyst.

Abstract: The present disclosure relates to a process for obtaining dialkyl disulphides from alkyl mercaptan and from sulphur, in which a reaction intermediate present in the final disulphide is decomposed at the end of synthesis. This operation makes it possible to avoid the degradation of said reaction intermediate over time, which is responsible for the decrease in purity of the dialkyl disulphide.

Abstract: One exemplary embodiment can be a process for oxidizing one or more thiol compounds from an alkaline stream. The process may include passing a mixed stream having the alkaline stream to an oxidation vessel having a body and a neck. Often, the body contains one or more packing elements and the neck contains a packing, a distributor, and a mesh. The process can further include passing an oxidized alkaline stream to a separation vessel containing a first chamber and a second chamber. Usually, the first chamber contains a coated mesh.

Abstract: The invention relates to compounds of structural formula (I): or a pharmaceutically acceptable salt, solvate, clathrate, or prodrug thereof, wherein Y, L, A, W1, W2, and R?1 are defined herein. These compounds are useful as immunosuppressive agents and for treating and preventing inflammatory conditions, allergic disorders, and immune disorders.

Abstract: The present disclosure relates to a process for obtaining dialkyl disulphides from alkyl mercaptan and from sulphur, in which a reaction intermediate present in the final disulphide is decomposed at the end of synthesis. This operation makes it possible to avoid the degradation of said reaction intermediate over time, which is responsible for the decrease in purity of the dialkyl disulphide.

Abstract: A crosslinked polysulfide-containing cycloaliphatic compound, useful as a crosslinker for filled sulfur-vulcanizable elastomer compositions, is represented by the general formula: [(CaH2a-)mG1(-CbH2bSx—)n?m]o[CcH2c-G2-CdH2dSy—]p[R]q wherein G1 is a saturated, monocyclic aliphatic group of valence n containing from 5 to 12 carbon atoms and optionally containing at least one halogen or a saturated monocyclic silicone [RSiO—]n[R2SiO—]r group of valence n; G2 is a saturated, divalent cyclic aliphatic group of valence 2 containing from 5 to 12 carbon atoms and optionally containing at least one halogen or a saturated monocyclic silicone [RSiO—]n[R2SiO—]r group of valence n; each R independently is a selected from the group consisting of a hydrogen atom, monovalent hydrocarbon of up to 20 carbon atoms and a halogen atom; each occurrence of subscripts a, b, c, d, m, n, o, p, q, x and y independently is an integer wherein a is 2 to 6; b is 2 to 6; c is 1 to 6; d is 1 to 6; m is 1 or 2; n is 3 to 5; o is a positive

Abstract: The disclosure relates to catalytically active carbocatalysts, e.g., a graphene oxide or graphite oxide catalyst suitable for use in a variety of chemical transformations. In one embodiment, it relates to a method of catalyzing a chemical reaction of an organic molecule by reacting the organic molecule in the presence of a sufficient amount of graphene oxide or graphite oxide for a time and at a temperature sufficient to allow catalysis of a chemical reaction. According to other embodiments, the reaction may be an oxidation reaction, a hydration reaction, a dehydrogenation reaction, a condensation reaction, or a polymerization reaction. Some reactions may include auto-tandem reactions. The disclosure further provides reaction mixtures containing an organic molecule and graphene oxide or graphite oxide in an amount sufficient to catalyze a reaction of the organic molecule.

Abstract: A sulfur-containing cycloaliphatic compound, useful as a crosslinker for filled sulfur-vulcanizable elastomer compositions, is represented by the general formula: G[—CaH2a—S—S(?O)b—R]n wherein G is a saturated, monocyclic aliphatic group of valence n containing from 5 to 12 carbon atoms and optionally containing at least one halogen or a saturated monocyclic silicone [RSiO—]n[R2SiO—]p group of valence n; each R independently is a monovalent hydrocarbon of up to 20 carbon atoms; each occurrence of subscripts a and b independently is an integer wherein a is 2 to 6 and b is 1 or 2; n is an integer of from 3 to 6; and p is an integer of from 0 to 3.

Abstract: Organo-metallic materials with reduced steric hindrance and the ability to aggregate ar disclosed. The metal remains capable of binding additional molecules. As an example, Zn complexes that prove aggregation are provided. Such aggregation may help improve or trigger new surface properties of the materials, alone or in combination with others. In a further implementation of the present disclosure, a robust molecule that resists degradation via nucleophilic, electrophilic and radical attacks is provided. Coordinated O2 is reduced catalytically, producing efficiently thyil radicals in spite of the extreme electronic deficiency of the catalyst.

Abstract: A process for compressing a hydrogen-sulfide-comprising gas stream, which comprises (i) compressing the hydrogen-sulfide-comprising gas stream in a compressor, (ii) flushing the compressor with a mixture comprising dialkyl polysulfides, dialkyl disulfides and at least one amine; a process for producing sulfur compounds, selected from the group consisting of alkylmercaptans, dialkyl disulfides and alkanesulfonic acids, which comprises the conversion of hydrogen-sulfide-comprising gas streams, wherein the hydrogen-sulfide-comprising gas streams are compressed according to the process comprising steps i) and ii); and also the use of a mixture comprising dialkyl polysulfides, dialkyl disulfides and at least one amine for removing sulfur deposits which occur in the compression of hydrogen-sulfide-comprising gas streams.

Abstract: One subject of the invention is a dimethyl disulphide in which the content of biocarbon is at least 1%. Another subject of the invention is processes for preparing this dimethyl disulphide. Yet another subject of the invention is the use of such a dimethyl disulphide for the manufacture of methanesulphonic acid.

Abstract: The invention relates to an initiator comprising at least one structural element characterized by the following formula (I) wherein X? is a non or low coordinating anion, R1, R2, R3, R4 are independently linear, cyclic or branched C1-C20 alkyl or alkylene groups, wherein one or more of the methylene groups contained in the alkyl or alkylene group can be substituted by —CO—, —CONH—, —CON(CH3)—, —S— and/or —O—, and wherein R1, R2, R3 and/or R4 can act as a bridging element connecting two or more structural elements. The invention is also related to a process of producing the initiator and to a curable composition comprising the initiator, a process for producing the curable composition a kit comprising a cationically curable composition and the inventive initiator and the use of the initiator or the curable composition comprising the initiator for various applications, especially in the dental field.

Abstract: The mercaptans R—SH contained in a hydrocarbon stream are oxidized to the corresponding (di)sulfides by means of a redox system which comprises trivalent iron and a heteropolyacid which allows the complete reoxidation of the reduced iron also with air.

Abstract: A dechalcogenative method for the preparation of an allylic sulfide comprises contacting an activated chalcogenide of Formula (I) with a thiol of Formula (II) for a period of time sufficient to form an intermediate of Formula (III), and supplying sufficient activation energy to the intermediate of Formula (III), in a suitable solvent, preferably in the absence of a phosphine or other thiophile, to induce a [2,3]-sigmatropic rearrangement therein to form an allylic sulfide of Formula (IV), with concomitant loss of chalcogen Z, as set forth in the following reaction scheme, wherein X is an activating group selected from the group consisting of CN, S-pyridyl, S-heteroaryl, SO2-aryl, and SO3Y; Y is an alkali metal ion; Z is Se or S; R1, R2, R3, R4, and R5 are each independently H or a hydrocarbon moiety; and R is an organic moiety.

Abstract: A sulfur species-containing feed gas is processed in a treatment plant in which COS is hydrolyzed, and in which so produced hydrogen sulfide and other sulfur species are absorbed in a lean hydrocarbon liquid. The sulfur species in the so formed rich hydrocarbon liquid are then subjected to catalytic conversion into disulfides, which are subsequently removed from the rich solvent. Most preferably, sulfur free lean solvent is regenerated in a distillation column and/or refinery unit, and light components are recycled from the rich hydrocarbon liquid to the absorber.

Abstract: The mercaptans R—SH contained in a hydrocarbon stream are oxidized to the corresponding (di)sulfides by means of a redox system which comprises trivalent iron and a heteropolyacid which allows the complete reoxidation of the reduced iron also with air.

Abstract: A process is disclosed for the production of olefins including ethylene, propylene and butenes from methyl mercaptan. The process comprises a reaction whereby methyl mercaptan decomposes to produce the olefin and hydrogen sulfide. The reaction is carried out at an elevated temperature in the range of 300° C. to 500° C. to achieve pyrolysis. Alternatively, a heterogeneous catalyst may be used.

Abstract: Disclosed is a process for the treatment of gas containing mercaptans and acid gases, including the following steps: (1) separating the acid gases from the said gas and obtaining a sweetened gas and the flow of acid gases containing H2S; (2) reacting the H2S thus obtained in step (1) according to the Claus reaction; (3) concentrating the mercaptans in at least one cut of the said sweetened gas; (4) extracting the mercaptans of the said cut; and further comprising: (5) transforming the mercaptans into dialkyl-disulfide (DSO); (6) hydrogenating DSO into H2S; and (7) reacting the H2S thus obtained at step (6) according to the Claus reaction. An installation for carrying out this procedure is also described.

Abstract: A composition containing 3,3?-thiobis(propane-1,2-dithiol) and one or more enic compounds which composition is photocurable and can give a cured product having a high refractive index and adequate hardness.

Abstract: Benzoic acid derivatives useful as intermediates for the preparation of drugs and agricultural chemicals, particularly compounds having herbicidal activity; and easy and economical processes for the preparation of the same. The processes are specifically those represented by reaction formula for the preparation of compounds represented by general formulae (1) and (6).

Abstract: The invention relates to a process for the preparation of organic disulfides by oxidation of mercaptans with sulfur dissolved in an organic disulfide using an amine as catalyst, where the mercaptans are used as “crude mercaptan stream” from a reaction of alcohols with hydrogen sulfide over a catalyst suitable for mercaptan synthesis. Furthermore, the invention relates to the use of the organic disulfides for the preparation of alkanesulfonic acids.

Abstract: This invention is directed to a process for producing a bishalophenyl disulfide, chracterized by reacting a halothiophenol with an alkali metal hydroxide to obtain an alkali metal halothiophenolate and subsequently converting the halothiophenolate into a disulfide with an oxidizing agent in the presence of a mineral acid. By the process, a bishalophenyl disulfide having a high purity can be industrially produced in high yield.

Abstract: A filtering means containing gelatinous and solid materials is cleaned without dismantling the filtering means by contacting the gelatinous material inside the filtering means with a solvent, thereby physically degrading the gelatinous material such that the degraded gelatinous material can pass through the filtering means.

Abstract: Selectively producing organic trisulfides by contacting a mercaptan, a sulfur compound, and a catalyst under conditions sufficient to produce a reaction product comprising organic polysulfides, and subjecting the reaction product to trisulfide enhancing conditions which are effective to inhibit the formation of organic disulfides and promote the conversion of organic tetrasulfides to organic trisulfides.

Abstract: Compact and preferably cellular polyurethane elastomers are produced by reacting a) polyhydroxyl compounds having molecular weights of from 800 to 6000 and, if desired, b) chain extenders and/or crosslinkers having molecular weights of up to 800 [lacuna] c) naphthylene 1,5-diisocyanate and at least one additional aromatic diisocyanate selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, 3,3′-dimethylbiphenyl diisocyanate, 1,2-diphenylethane diisocyanate and phenylene diisocyanate, and/or aliphatic diisocyanate having from 4 to 12 carbon atoms and/or cycloaliphatic diisocyanate having from 6 to 18 carbon atoms, where the formative components (a), (c) and, if used, (b) are preferably reacted by the prepolymer method, in the presence or absence of d) catalysts, e) blowing agents and f) additives. Isocyanate prepolymers suitable for this purpose are also described.

Abstract: A process useful for producing an organic disulfide is disclosed. The process can include contacting mercaptans with a solid catalyst selected from the group consisting of a Group IIA metal oxide; 2) an alumina material consisting essentially of alumina; 3) an impregnated alumina impregnated with a metal selected from the group consisting of cobalt, molybdenum, tungsten, nickel and combinations of any two or more thereof; 4) an acidic ion-exchange resin; 5) a basic ion-exchange resin; and 6) combinations of any two or more thereof; in the presence of sulfur dioxide and in the substantial absence of a liquid oxidation catalyst to thereby produce organic disulfides.

Abstract: A filtering means containing gelatinous and solid materials is cleaned without dismantling the filtering means by contacting the gelatinous material inside the filtering means with a solvent, thereby physically degrading the gelatinous material such that the degraded gelatinous material can pass through the filtering means.

Abstract: Selectively producing organic trisulfides by contacting, in the presence of a catalyst, a mercaptan and a sulfur compound under conditions sufficient to produce a organic polysulfides and hydrogen sulfide and controlling the concentration of hydrogen sulfide in the liquid reaction solution during specific reaction periods such that the production of organic trisulfide is enhanced and the production organic polysulfides having more or less than three sulfur atoms is inhibited.

Abstract: An aqueous solution of basic mercaptide salt and water-soluble peroxide are mixed together in a reaction zone and maintained under reaction conditions effective to produce a vapor phase comprising organic disulfide, and concurrently vapor phase is recovered from the reaction zone. The process is highly efficient and enables production of organic disulfides in high yield and purity. Not only is the process very easy and simple to carry out, but in addition the process (i) eliminates the need for forming an organic phase of liquid organic disulfide product and conducting a separation between such product and the total aqueous phase used in the reaction, (ii) enables efficient control of a highly exothermic reaction, and (iii) minimizes alkanesulfonic acid salt formation during the reaction.

Abstract: The invention relates to a polymeric film composed of an optically anisotropic material made from a cross-linked synthetic resin composition comprising a polymer network, being obtainable by copolymerization of a mixture comprising (a) at least one monomer or oligomer, each of said monomers or oligomers having at least two polymerizable functional groups selected from the group consisting of (meth-)acrylate ester, epoxy and vinyl ether, (b) at least one achiral liquid crystalline monomer or oligomer, each of said monomersloligomers having mesogenic groups and one polymerizable functional group selected from the group consisting of (meth-)acrylate ester, epoxy and vinyl ether.

Abstract: A process which can be used to produce organic polysulfide compounds is provided. The process comprises contacting, in the presence of a catalyst, an organic disulfide with sulfur under conditions sufficient to produce an organic polysulfide wherein the organic disulfide, sulfur, and catalyst are each present in an amount effective to produce an organic polysulfide and the catalyst comprises a base and a surfactant.

Abstract: A highly efficient method of producing dialkyl disulfides from mercaptans and oxygen is described which involves employing carbon dioxide as an internal coolant. Among the benefits made possible by this method are (1) an increase in the proportion of mercaptan converted to dialkyl disulfide per pass through the reactor, (2) an increased ease of separation of and recycling of carbon dioxide, (3) the ability to use a common contaminant as a coolant, and (4) the use of a simple adiabatic reactor design.

Abstract: Improved low density polyurethane foams are prepared from an isocyanate-terminated prepolymer having an NCO content of more than about 31 to about 33.5% by weight comprising:(a) a polyphenylene polymethylene polyisocyanate comprising(i) about 30 to about 100% by weight of diphenylmethane diisocyanate and(ii) the remainder selected from the group consisting essentially of higher homologues of polyphenylene polymethylene polyisocyanate, isocyanate-containing ester groups, urea groups, biuret groups, aliphatic groups, carbodiimide groups, isocyanurate groups, uretdione groups and urethane groups; and(b) a polyoxyalkylene polyol having an oxyethylene content of about 30 to about 90%, a molecular weight of about 1000 to about 12000 and a functionality of about 2 to about 8.

Abstract: Thiols are trapped, and converted to disulfide compounds, by a process of reacting them with compounds containing a 1,2,4-thiadiazole ring structure carrying a substituent at position 3 of the thiadiazole ring, and being unsubstituted at position N-2. The process is useful pharmacologically, in inhibiting certain thiol-containing enzymes such as H.sup.+ /K.sup.+ -ATPase (the proton pump), and industrially, in selective removal of thiol compounds from gas or liquid mixtures.

Abstract: The invention relates to novel alkoxyacrylic thiol esters, to a plurality of processes for their preparation and to their use as fungicides, and to novel intermediates and to a plurality of processes for their preparation.

Abstract: A process for producing an organic polysulfide compound comprises contacting, in the presence of a catalyst, a mercaptan with elemental sulfur to produce a product medium and contacting the product medium with a material comprising carbon dioxide or a carbon dioxide-generating compound wherein the catalyst comprises a base and optionally a surfactant and the organic polysulfide contains about 3 or more sulfur atoms per molecule.

Abstract: A process for the manufacture of organic disulphides and polysulphides using a basic resin catalyst wherein the catalyst is a polystyrene-divinylbenzene resin functionalized with ethylenediamine or a polyethylenepolyamine groups.

Abstract: Disclosed is a method of making a substituted diphenyldisulfide from a substituted thiophenol. A two phase reaction mixture is prepared which comprises a substituted thiophenol having the general formula ##STR1## hydrogen peroxide, water, an organic solvent, a basic salt that will give a pH between about 7 and about 10, and an optional flocculating agent. In the formula, R is selected from the group consisting of halogen, alkyl from C.sub.1 to C.sub.6, alkoxy from C.sub.1 to C.sub.6, or nitro. After the exothermic reaction is complete, the reaction mixture is cooled to crystallize the substituted diphenyldisulfide product. The symmetrical product precipitates preferentially over the unsymmetrical product, thereby enhancing the purity of the product over the purity of the starting material. Optionally, the organic solvent and the aqueous phase are recycled.

Abstract: The present invention relates to a method of producing bis(4-alkylthiophenyl) disulfides characterized by (a) reducing directly a 4-alkylthiobenzenesulfonyl chloride, or (b) oxidizing a 4-alkylthiobenzenethiol obtained by reducing a 4-alkylthiobenzenesulfonyl chloride. The present invention is capable of producing the compound below useful as an intermediate of pharmaceuticals.

Abstract: A process for synthesizing disulfides and sulfhydryl compounds which are useful pharmaceuticals. The process includes a two step, single pot process for preparing disulfides from an alkenyl sulfonate salt. The disulfides are useful as toxicity mitigating agents of chemotherapeutic drugs, such as certain platinum complexes, and as use therapeutic drugs for a variety of conditions in mammals.The two step process involves first the conversion of the starting reagent to a mercaptane sulfonate, then an oxidation to the desired disulfide.

Abstract: A composition comprising a base and an alkoxylated compound selected from an alkoxylated alcohol and alkoxylated mercaptan is disclosed. The composition can be used to catalyze the reaction of a mercaptan and an elemental sulfur to produce a polysulfide compound. The polysulfide compound can be further treated with an alkylene oxide to reduce the mercaptan sulfur content of the polysulfide compound.

Abstract: A process for synthesizing disulfides and sulfhydryl compounds which are useful pharmaceuticals. The process includes a two step, single pot process for preparing disulfides from an alkenyl sulfonate salt. The disulfides are useful as toxicity mitigating agents of chemotherapeutic drugs, such as certain platinum complexes, and as use therapeutic drugs for a variety of conditions in mammals.The two step process involves first the conversion of the starting reagent to a mercaptane sulfonate, then an oxidation to the desired disulfide.

Abstract: The preparation of organic disulphides and polysulphides by reaction of sulphur with a mercaptan or with a polysulphide of lower sulphur order in order to convert it into polysulphide of higher order, or alternatively by reaction of a mercaptan with an organic polysulphide of high sulphur order in order to convert it into polysulphide of lower sulphur order, in the presence of a catalyst in the form of a resin with a basic function, characterized in that the resin is based on polystyrene-divinylbenzene (PS-DVB) functionalized with primary amino groups and having the general formula (I): ##STR1## being the PS-DVB resin support, L being a linear organic radical which is as long as or longer than the methylene radical (--CH.sub.2 --).

Abstract: In a process for the preparation of organic disulphides and polysulphides by reaction of sulphur with a mercaptan or with a polysulphide of lower sulphur order in order to convert it into polysulphide of higher order, or alternatively by reaction of a mercaptan with an organic polysulphide of a high sulphur order in order to convert it into a polysulphide of lower sulphur order, in the presence of a catalyst in the form of a resin with a basic function, the resin is based on a polystyrene-divinyl benzene support functionalized with guanidine or amidine groups, and the reaction is preferably conducted in the presence of methanol.

Abstract: A process which can be used for producing an organic disulfide is provided. The process comprises the steps of: (1) contacting a base and a mercaptan under an effective condition for forming a brine phase comprising the base and a basic salt of a mercaptan; (2) contacting the brine phase with a mercaptan and hydrogen peroxide under a condition sufficient to effect the formation of an aqueous phase and an organic phase; (3) separating the aqueous phase from the organic phase; (4) recovering the organic phase; and optionally, (5) removing a portion of water from the aqueous phase and thereafter repeating the steps of (2) to (5).

Abstract: A process for preparing an organic polysulfide polymer, such as polyethylene trisulfide, is provided which comprises contacting a dimercaptan such as 1,2-ethanedithiol with elemental sulfur using a basic catalyst wherein the dimercaptan, elemental sulfur, and basic catalyst are each present in an effective amount to effect the preparation of the organic polysulfide polymer. A process for controlling the molecular weight of an organic polysulfide polymer is also provided which comprises contacting a mercaptan with a dimercaptan and sulfur, in the presence of a basic catalyst, under conditions sufficient to prepare an organic polysulfide polymer.

Abstract: A process which can be used to produce organic polysulfide compounds is provided. The process comprises contacting, in the presence of a catalyst, a mercaptan with sulfur under conditions sufficient to produce an organic polysulfide and thereafter, the resulting reaction medium is contacted with an acid to produce an acid-treated organic polysulfide wherein the mercaptan, sulfur, and catalyst are each present in an amount effective to produce an organic polysulfide. The acid-treated organic polysulfide can be purified and recovered.

Abstract: A layered double hydroxide intercalated with a metal complex of a polyaryl compound is described. A preferred complex is porphin or phthylocyanine. The metals are preferably selected from Group VII-B and Group VIII cobalt and iron triads. The resulting LDH metal complexes are useful for the oxidation of oxidate compounds such as thiols and phenols.