190 results about "Organophosphorous compounds" patented technology

A flame-retardant resin composition comprises a base resin (A), an organic phosphorus compound (B) having a unit represented by the following formula (1a), and a flame-retardant auxiliary (C).

Wherein Ar represents an aromatic hydrocarbon ring or a nitrogen-containing aromatic heterocycle; X¹ represents an oxygen atom or a sulfur atom; Y¹ and Y² are the same or different and each represents a hydrocarbon group, an alkoxy group, an aryloxy group, or an aralkyloxy group; Z¹ represents an alkylene group, or a nitrogen-containing bivalent group corresponding to an alkylamine; Y¹ and Y² may bind to each other, and Y¹ and Y² together with the adjacent phosphorus atom may form a ring; “a” denotes 0 or 1; and “b” denotes an integer of 1 to 6.

The present invention relates to catalyst for polymerization and copolymerization of olefin and its preparation process. The catalyst is obtained through dissolving magnesium halide in homogeneous solution of organic epoxy compound, organophosphorus compound and electron donor compound, and the reaction with the mixture solution of titanium halide or its derivative and liquid co-precipitant. Using the liquid co-precipitant intersoluble with titanium compound can omit the step of dissolving separating assistant, is favorable to the depositing separation of catalyst mother liquid system, raises the yield of the catalyst, avoids the residue of co-precipitant in catalyst product and raises the quality of polymer. The catalyst for polymerization and copolymerization of olefin has high activity and results in good polymer state.

The invention relates to the technical field of novolac epoxy resin, in particular to a bisphenol A novolac epoxy resin containing phosphorous and a relative preparation method, wherein the compound formula is represented as below, n is 0-7. The invention condensates formaldehyde or cavaform and bisphenol A in the presence of acid catalyst to prepare phenol resin compound, processes etherification with epichlorohydrin in the presence of phase transfer catalyst, generates bisphenol A novolac epoxy resin in the presence of alkal catalyst, and reacts the bisphenol A novolac epoxy resin with organic phosphorous compound in the presence of catalyst to obtain bisphenol A novolac epoxy resin containing phosphorous. The solid product has good thermal resistance, flameproof, mechanical property and wide application in the technical fields of laminated board, insulated material, semi-conductor package and composite material.

The invention relates to organic phosphonic (phosphoric) acid rare-earth salt fire retardant and a synthetic method and application thereof, which belongs to the fields of fine chemical and macromolecular materials. The low-toxic, low-smoke, environment-friendly and efficient fire retardant is formed by combining with rare earth elements in organic phosphonic (phosphoric) acid structure. Compared with the organic phosphorous compound, the fire retardant has extremely high stability at normal temperature and plastic processing temperature; moreover, the use of rare earth elements ensures that the fire retardant and other components in macromolecular material are formed into a combination having better effects than Van Der Waals Force, hydrogen bond and the like; particularly, when mixed with other components of inflatable composite fire retardant, the fire retardant can obtain better synergic effects than currently used phosphinates such as aluminum phosphinate, zinc phosphinate and the like; moreover, the obtained macromolecular material can maintain better physical and mechanical properties.

A method of manufacturing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a phosphate type catalyst or of an organophosphorous compound of a metal selected from the group made up of zirconium, hafnium and titanium, allows to directly produce, in one or more stages, an ester that can be used as fuel and a pure glycerin.

The invention discloses a coke inhibitor and the process for preparation and the application, the coke inhibitor is the mixture which is formed by organophosphorus compound, phenolic compound, amine compound, high molecular weight polymerization amine, organo-sulfur compound and organic solvent. The weight percentage contents are respectively 5-15%, 10-30%, 10-30%, 10-40%, 5-10% and 20-30%. The process for preparing coke inhibitor has the advantages of simple process for preparation, lower production cost, excellent coke inhibiting property, bigger flexibility and wide application scope.

The invention discloses a synthetic method of a floating agent of organophosphorous compound and the organophosphorous floating agent, belonging to the technical field of mineral separation. The synthetic method comprises the steps of: taking phosphorus trichloride as a phosphorus source, dissolving parahydroxyben-zaldehyde in ethanol, slowly dropping excess propylamine, reacting at room temperature, then obtaining product imine, using the mixture of the phosphorus trichloride and petroleum ether to prepare phosphite ester in a mixing liquid of the ethanol and the petroleum ether, then using the phosphite ester, the imine and anhydrous ether to prepare the mixture of phosphoramidic acid, imine, small amount of phosphite ester and solvent ether, and then conducting distillation, column chromatography and separation to obtain the organophosphorous floating agent phosphoramidic acid, therefore the method obtains 20 types of phosphoramidic acid compounds, and from which, 2-3 efficient and novel organophosphorous floating agents can be selected for use. The invention has simple synthetic method, easy operation and short period, and the obtained organophosphorous floating agent is widely applied to mineral dressing due to special structure thereof.

The invention discloses a synthesis method of phosphorothioate compounds with general formula (III), and aims to provide a novel synthesis method of phosphorothioate compounds with simple conditions and easy industrial production. The method is to mix the organophosphorus oxygen compound having the general formula (I) with the mercaptan or thiophenol compound having the general formula (II), and react under the action of a catalyst to prepare the compound of the general formula (III). Phosphorothioate compounds. By adopting the method of the invention, phosphorothioate compounds can be synthesized cheaply and efficiently, and will have wide application prospects in actual production.

Process for forming a coated article by (a) depositing a layer of an omega functionalized organophosphorous compound on an oxide substrate; (b) heating the substrate of step (a) to a temperature sufficient to bond the omega functionalized organophosphorous compound to the oxide substrate; (c) depositing a separate layer onto the layer produced by step (b); and (d) bonding the layers produced by steps (b) and (c) through the omega functional group.

The invention provides a method for modifying a ZSM-5 molecular sieve through an organophosphorous compound. The method comprises mixing an HZSM-5 molecular sieve and one or more organophosphorous compounds such as tetrabutylphosphonium hydroxide, tetrabutylphosphonium bromide, di-n-butyl phosphate, 1-butylphosphoric acid, tri-n-butylphosphonium oxide, tributylphosphine, fosetyl-aluminum, tetraphenylphosphonium bromide, triphenylethylphosphonium bromide, triphenylbutylphosphonium bromide and triphenylbenzylphosphonium bromide, and drying and calcining the mixture. The organophosphorous compound-modified ZSM-5 molecular sieve has a high pore volume and a high specific surface area and contains more B acid centers.

The invention relates to a catalyst component that is used in ethane homopolymerization or copolymerization of ethane with other alpha-alkene and a preparation method thereof, wherein, the catalyst component comprises a magnesium complex substance, at least a titanium compound, at least an organic alcoholic compound with carbon atom number more than 5 and at least a reaction product of an organic silicon compound; the magnesium complex substance is prepared by dissolving a magnesium compound in a system of organic epoxy compounds and organic phosphorous compounds. The catalyst of the invention has the advantages of relatively high catalytic activity, relatively good hydrogen modulation sensibility, polymer with narrow particle diameter distribution, polymer with high stacking density, etc., and is extremely applicable to slurry polymerization technique of ethane.

The invention relates to the field of olefin polymerization catalysts and discloses a preparation method of an olefin polymerization catalyst. The preparation method comprises the following steps that (1) a magnesium compound, an organic phosphorus compound and an organic epoxy compound are in mutual contact in a solvent to form a homogeneous solution; (2) at the presence of a precipitation promoting agent, the homogeneous solution makes contact with a titanium compound and a mixture is obtained; (3) the mixture makes contact with ester and alcohol and a solid-liquid mixture is obtained; and (4) optionally, the solid-liquid mixture makes contact with an internal electron donor compound and the olefin polymerization catalyst is obtained. The invention further provides the olefin polymerization catalyst prepared by means of the preparation method and an application thereof in an olefin polymerization reaction. By introducing the ester and the alcohol in the preparation process of the olefin polymerization catalyst, the spherical olefin polymerization catalyst with the particle diameter being 25 microns or above can be prepared, so that preferable mobility is guaranteed. In addition, when the olefin polymerization catalyst is used for the olefin polymerization reaction, the condition that polymer bulk density is reduced does not occur.

The present invention relates to novel alternative forms of human acetylcholinesterase (AChE) and nucleotide sequences encoding the same. The genes encoding the novel forms of human AChE have been identified in various malignant tumor cells. In a further aspect, the invention relates to a transgenic animal assay system for evaluating efficacy of drugs against cholinergic proteins, prior to or in the course of therapeutic treatment. Transgenic animals, preferably developing tadpole of Xenopus or mice which express human AChE, are used. The transgenic animal assay system is also useful for evaluating the toxicity of substances which potentially block human AChE (e.g. organophosphorous compounds).

This invention relates to components and preparation method for a composite carrier catalyst for ethylene homopolymerization or copolymerization with other alpha-olefins. The catalyst comprises at least one Mg composite, at least one Ti compound, at least one organic alcohol compound, at least one Si compound, and at least one inorganic inert carrier. The Mg composite is prepared by dissolving Mg compound in organic epoxy compound and organic phosphorus compound system. The catalyst has such advantages as high catalytic activity, high hydrogen sensitivity and narrow particle size distribution of polymer. The catalyst is suitable for slurry polymerization of ethylene, combined polymerization process where catalyst with high activity and good particle morphology is needed, and gas phase fluidized bed process.

The invention provides a quaternary phosphonium sulfonate fire retardant and a synthesis method and use thereof. The structural general formula of the fire retardant is as shown in a formula (I) in the specification, wherein R1 and R2 are one of C1-C24 alkyl, C2-C24 alkenyl, C3-C24 cycloalkyl, C4-C24 aryl, and C4-C24 substituted aromatic of which the substituent group contains N, O or P. The fire retardant is prepared from sulfonyl chloride, alcohol, an organic phosphorus compound and the like as raw materials by reaction in two steps. The synthesis condition is mild, operation is simple and convenient, and yield is high. Meanwhile, the fire retardant has good heat stability, and has good flame retardant efficiency when being applied to a plurality of polymers, UL-94 of the obtained PC fire-retardant composite material achieves the V-0 grade, UL-94 of the obtained POE fire-retardant composite material achieves V-2 grade, and meanwhile, good chemical and thermal properties are kept.

The invention relates to a process for preparing disodium hydrogen phosphate from glyphosate. The process comprises the following steps: oxidization step: first, adding an acid and adjusting a glyphosate mother liquor till the liquor is acidic; then, in the condition of temperature range from 180 to 280 DEG C and pressure range from 3.0 to 9.0MPa, oxidizing organic phosphorus compounds and phosphorous acid in the glyphosate mother liquor to orthophosphate ions by using oxygen in air as an oxidant under the catalysis of a heterogeneous noble metal catalyst; extraction step: adding oxidized wastewater into the extraction liquor for extraction; layering; dividing upper extraction liquor to an extraction liquor separation tank; and neutralizing step: kalifying to neutralize the upper extraction liquor; carrying out solid-liquid separation under a certain temperature condition to obtain a disodium hydrogen phosphate product to be marketed; and after refining the extraction liquor, returning and applying mechanically.

A flame retardant molding composition contains a) from 43 to 93.5 parts by weight of polyamide, b) from 2 to 12 parts by weight of melamine cyanurate, c) from 1.5 to 15 parts by weight of polyol having at least 3 OH groups per molecule, and d) from 3 to 30 parts by weight of an organophosphorus compound, with the proviso that the parts by weight of components a) to d) give a total of 100. The molding composition has excellent fire properties and, despite the use of the particulate material melamine cyanurate, is flexible.

The present invention provides a catalyst component for ethylene polymerization, a process for preparing the same, a catalyst comprising the same, and a process for polymerizing ethylene using the catalyst. The catalyst component comprises a reaction product, supported on an inorganic oxide support, of a magnesium complex, a titanium compound, an alcohol compound, and an organoaluminum compound, wherein said magnesium complex is formed by dissolving a magnesium halide in a solvent system comprising an organic epoxy compound and an organo phosphorus compound. The catalyst according to the invention is especially suitable for slurry phase polymerization of ethylene. The catalyst according to the present invention has high catalytic activity, and a good hydrogen response, with the resultant polymer having a more uniform particle size diameter and a narrow particle size distribution.

A wood plastic composite comprises a thermoplastic resin, a lignocellulosic filler, a flame retardant material in an amount of between 10 to 20 percent by weight, based on the total weight of the composite, and optionally other additives, wherein the flame retardant material comprises one or more compounds selected from the group of a cyclic organophosphorous compound and mixtures of the cyclic organophosphorous compound together with a nitrogen-containing organic compound, and optionally a minor amount of an inorganic flame retardant.