377 results about "Epoxide" patented technology

A method of fixating carbon dioxide to a substituted cyclic carbonate includes a reaction of an epoxide and carbon dioxide in the presence of a zirconium-containing metal-organic framework to form the substituted cyclic carbonate. The zirconium-containing metal-organic framework is a UiO-66-based metal-organic framework including an aminomethylbenzoic acid. The zirconium-containing metal-organic framework catalyzes the formation of the substituted cyclic carbonate in a range of 40 to 97 percent yield.

The invention discloses a far-infrared high-transmittance composite material, a preparation method thereof and an optical device, and the far-infrared high-transmittance composite material comprises the following components in parts by weight: 70-99 parts of a polymer matrix; 1-30 parts of an anti-reflection auxiliary agent; the polymer matrix is a sulfur-containing polymer prepared by polymerization reaction of a polymeric monomer and sulfur, and the proportion of carbon-carbon unsaturated bonds is less than 3%; the polymeric monomer is selected from at least one of a vinyl monomer, a propenyl monomer, an acrylic acid monomer, a methacrylic acid monomer, an epoxide monomer, a thiopropyl ring monomer, an alkynyl monomer, a butadiene monomer, an isoprene monomer and a norbornene monomer; the anti-reflection auxiliary agent comprises at least one of nano zinc sulfide, nano zinc selenide, nano calcium fluoride, nano magnesium fluoride and nano magnesium oxide. The composite material and the optical device thereof have high far infrared transmittance and good mechanical properties and processability, and can meet the requirements of various far infrared optical fields.

A method of carbon dioxide fixation includes contacting a covalent organic framework material with a co-catalyst and an epoxide in the presence of carbon dioxide to form a cyclic carbonate. The covalent organic framework material includes reacted units of a 2,4,6-trimethyl-1,3,5-triazine, reacted units of a 4,4′-biphenyldicarbaldehyde, and palladium nanoparticles. The reacted units of the 2,4,6-trimethyl-1,3,5-triazine and the reacted units of the 4,4′-biphenyldicarbaldehyde form a COF-701, where the palladium nanoparticles are on an outer surface of the COF-701. The co-catalyst is n-tetrabutylammonium bromide.

The invention relates to preparation and low-temperature recovery methods of ester group-containing functionality-controllable epoxy resin and a composite material thereof. The method comprises the following steps: carrying out click chemical reaction on a thiol compound and carbon-carbon double bond-containing epoxide in a solvent under the initiation of 365nm ultraviolet light at the reaction temperature of 0-20 DEG C for 0.25-6 hours, and drying the solution by distillation to obtain the ester group-containing functionality-controllable epoxy resin, the molar ratio of sulfydryl to carbon-carbon double bonds in the thiol compound is 1: 1. According to the invention, an ester group-containing structure is introduced through click chemistry, and the controllability of the functionality degree of the epoxy resin is realized, so that the crosslinking density of a cured product is accurately regulated and controlled. The design not only endows a cured product with an excellent toughening effect, higher glass transition temperature and remarkably improved mechanical properties, but also endows the cured product with green and efficient degradation properties.

The invention belongs to the field of electrolyte, and particularly relates to cyclic carbonate for electrolyte and a preparation method thereof and electrolyte, and the preparation method of the cyclic carbonate for electrolyte comprises the following steps: adding a porous carbon nanomaterial as a catalyst and epoxide into a reaction kettle, and introducing CO2 for reaction to obtain the cyclic carbonate. The metal oxide modified nitrogen-doped porous carbon nanomaterial with a high specific surface area is designed and developed to catalyze CO2 and epoxide to synthesize the cyclic carbonate for the electrolyte, the cyclic carbonate for the electrolyte is prepared by catalyzing carbon dioxide under a mild condition, and on the basis of ensuring the high content of the cyclic carbonate, the epoxypropane conversion rate is 99.9%; the reaction time is shortened, the purity of the obtained cyclic carbonate product is 99.9%, and the method is suitable for industrial production.

The invention discloses preparation and application of an amido-functionalized polyionic liquid catalyst, vinyl imidazole hydrobromide and N-(4-vinyl) benzyl diethylamine are used as monomers, N, N '-methylene bisacrylamide is used as a cross-linking agent, and the amido-functionalized polyionic liquid catalyst is prepared through a free radical copolymerization method. The imidazole / amido functionalized cross-linked PILs with multiple active sites are prepared by one-step synthesis through a hydrothermal polymerization method. The catalyst has catalytic active sites of amido, imidazolyl and Br, so that the catalyst can efficiently catalyze the cycloaddition reaction of CO2 and epoxide at 80 DEG C and normal pressure in the absence of a solvent and a co-catalyst.

The present invention relates to novel (per)fluoropolyether (PFPE) polymers, to a process for their manufacture and to their use as additives in coating compositions. Specifically, the invention relates to a (per)fluoropolyether polymer [polymer (PP)] comprising a (per)fluoropolyoxyalkylene chain [chain (Rpf)] having two chain ends bonded to opposite sides of said chain (Rpf), wherein: * one of said chain ends comprises at least one, preferably from 1 to 3, group (group [I]) selected from: alkoxysilane [group (Si)] or cross-linkable group, preferably selected from unsaturated moiety [group (U)] and epoxide [group (E)]; and * the other chain end comprises at least one, preferably from 1 to 3, group (group [II]) selected from: optionally substituted piperidine, optionally substituted pyridine or optionally substituted pyrrole.

The invention relates to a polyisobutylene polyether alcohol amine compounds and compositions thereof. The invention also is directed to a new process for making the polyisobutylene polyether alcohol amine compound(s) by reacting a polyisobutylene epoxide with a specific polyetheramine, a protic solvent, a diluent, and optionally a catalyst. In addition, the invention further relates to the many uses of the polyisobutylene polyether alcohol amine compound(s) and composition(s) including but not limited to its use in lubricants, surfactants, emulsifiers, adhesives, resins, and the like.

The invention relates to a new and improved process for making an epoxidized olefin, specifically, polyisobutylene epoxide. The inventive process generally comprises (a) combining a polyisobutylene and a solvent to form a first mixture, (b) combining a peroxide, a carboxylic acid and an acid catalyst to form a second mixture, (c) reacting the first and second mixtures forming a non-aqueous phase comprising a polyisobutylene epoxide and an aqueous phase; (d) separating the non-aqueous phase from the aqueous phase; (d) washing and neutralizing the non-aqueous phase, and (e) recovering in a high yield and high purity polyisobutylene epoxide. It was discovered that specific mole ratios and amounts of reactants provide for recovering in high yield and purity polyisobutylene epoxide with reduced detrimental by-products.

The invention relates to a method for synthesizing cyclic carbonate by catalyzing olefin oxidative carboxylation with a difunctional ionic liquid, which comprises the following steps: in a synthesis system, adding an oxidant and an additive into olefin serving as a raw material and the difunctional ionic liquid serving as a catalyst, and then carrying out epoxidation reaction; after the reaction is finished, potassium iodide and a carboxylation reagent are added into a reaction system, then cycloaddition reaction is performed, and finally cyclic carbonate can be prepared. The bifunctional ionic liquid is used as a catalyst, so that the olefin epoxidation reaction can be catalyzed, the cycloaddition reaction of an epoxide intermediate and CO2 can also be catalyzed, and the problem that a two-step reaction catalytic system is incompatible is solved. The adopted raw materials are cheap and easy to obtain, a metal-free catalyst is used, the method has the advantages of being economical and environmentally friendly, and an alternative scheme is provided for synthesis of cyclic carbonate.

The invention discloses a preparation method of a hydroxyl-functionalized quaternary phosphonium salt polyion liquid super-crosslinked heterogeneous catalyst and an application of the catalyst in catalysis of a cycloaddition reaction of CO2 and epoxide. Trimethoxytriphenylphosphine and dibromo-p-xylene are firstly subjected to quaternary phosphating to form triphenylphosphine-based ionic liquid, and then the triphenylphosphine-based ionic liquid and biphenyl benzyl dichloride can be subjected to aromatic electrophilic substitution reaction in the presence of 1, 2-dichloroethane serving as a solvent and anhydrous aluminum chloride serving as a Lewis acid catalyst to realize cross-linking, so that the triphenylphosphine-based ionic liquid can be prepared. And methoxy can be removed to form hydroxyl, so that the hydroxyl-functionalized quaternary phosphonium salt polyion liquid super-crosslinked polymer is prepared in one step. The resulting heterogeneous catalyst effectively converts CO2 to cyclic carbonates under milder conditions (80 DEG C, 1 atm) in the absence of a soluble co-catalyst.

The invention provides natural oil-based polyether polyol, a preparation method thereof and a polyurethane laminated adhesive, and the preparation method comprises the following step: carrying out polymerization reaction on natural oil substances, small molecular weight polyether polyol and epoxide under the catalysis of a DMC (Dimethyl Carbonate) catalyst to obtain the natural oil-based polyether polyol. The preparation method does not need a post-treatment process, the production cost is low, the synthesis process is simple, the technological process is short, the prepared natural oil-based polyether polyol can replace high-price castor oil, the cost is reduced, and the natural oil-based polyether polyol has better performance indexes and can meet the performance requirements of the high-performance polyurethane laminated adhesive.

A process for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a specific a quaternary ammonium, quaternary phoshonium and / or quaternary stibonium-based catalyst (C), a compound (D), a compound (F) wherein compound (D) and compound (F) independently comprises at least one of a monofunctional isocyanate, a monofunctional epoxide, a cyclic carbonate, a monofunctional alcohol, a monofunctional amine optionally in a solvent (E), and wherein the process is in the absence of a solvent (G) with a boiling point higher than 200° C., preferably higher than 190° C. and more preferably higher than 180° C. at 1 bar (absolute). The invention is also related to the resulting thermoplastic polyoxazolidinone.

The invention discloses zingiberone epoxidase protein in ligustrum sinense as well as a biological material and application of the zingiberone epoxidase protein. The amino acid sequence of the zingiberone epoxidase protein CYP76S110 to be protected in the ligustrum sinense is 2 in a sequence table, and the coding nucleotide sequence of the zingiberone epoxidase protein CYP76S110 is 1 in the sequence table. According to the embodiment of the invention, after the coding gene of the CYP76S110 protein is introduced into yeast for expression, an obtained recombinant yeast microsome solution containing the CYP76S110 protein can be used for catalyzing zingiberone to synthesize zingiberone epoxide (zingiberone epoxide), and the recombinant yeast microsome solution can be used for catalyzing zingiberone to synthesize zingiberone epoxide (zingiberone epoxide). The method can be applied to in-vitro biosynthesis of the zingiberone derivative.

The present invention relates to a bismuth-containing catalyst of formula (R1)2-(R2)-(Bi)3+ (I), wherein (R1)2- is a dianion of formula (II*), wherein A is unsubstituted or at least monosubstituted linear C3-30-alkylene, wherein at least two not adjacent CH2 groups of C3-30-alkylene are replaced by a heteroatom independently selected from the group consisting of O, S, 5 NH, N-C1-30-alkyl, N-C6-14-aryl and N-C7-30-aralkyl, wherein alkyl and aryl fragments of N-C1-30-alkyl, N-C6-14-aryl, N-C7-30-aralkyl may at least be monosubstituted by hydroxyl, halogen, -CF3, NH2, -NH-C1-6-alkyl, -NH- phenyl, -N(C1-6-alkyl)2, -N(phenyl)2, -SH, -S-C1-6-alkyl, -S-phenyl, -O-C1-6-alkyl or -O-phenyl, to process for the preparation of the bismuth containing catalyst, to a process for the preparation of a compound, oligomer or polymer comprising at least one urethane group using the bismuth-containing catalyst, to a composition comprising (i) at least one monoalcohol (B1) or polyol (B2), (ii) at least one polyisocyanate (A) and (iii) the bismuth-containing catalyst, to a coating or adhesive layer formed from the composition on a substrate, to a foam formed from the composition, and to the use of the bismuth-containing catalyst in for preparing compounds, oligomers or polymers comprising a urethane group, as esterification and transesterification catalyst and as catalyst for ring-opening polymerizations of lactones and epoxides.

The invention discloses a polyamine-polyester gradient copolymer, aziridinyl cationic polyester as well as a preparation method and application of the aziridinyl cationic polyester, relates to the technical field of high polymer material synthesis, and solves the problems of complex synthesis process, high cost and cytotoxicity caused by concentrated amino distribution of the current cationic polyester material. The preparation method comprises the following steps: mixing a catalyst, a promoter, N-o-nitrobenzenesulfonyl substituted methyl aziridine, cyclic anhydride and alicyclic epoxide under anhydrous and anaerobic conditions, carrying out ring-opening copolymerization reaction, and after the reaction is finished, settling to obtain the polyamine-polyester gradient copolymer. Dissolving the polyamine-polyester gradient copolymer in ultra-dry DMF under the protection of nitrogen, then adding potassium carbonate and p-tolylthiophenol, after a desulfonylation reaction is finished, settling and washing in diethyl ether, and finally performing vacuum drying to obtain the aziridinyl cationic polyester. The method is beneficial to promoting the development of polyester functionalization, and has potential application value in the fields of gene transfection, protein carriers and sewage treatment, CO2 adsorption, adhesives and the like.

The application relates to the technical field of catalysts, and discloses a nano magnesium oxide material and a preparation method and application thereof. The nano magnesium oxide material has a porous structure, wherein the particle size of the nano magnesium oxide is 20-200 nm; and the pore size of the porous structure is 5-45 nm. The classical nucleation growth process of the magnesium oxide is directionally adjusted in a weak alkaline nucleation system, and then the nano magnesium oxide with a controllable grain size distribution is obtained. The nano magnesium oxide material has good catalytic activity in the synthesis of propylene carbonate from CO2 and an epoxide under the conditions of no solvent and no auxiliary agent, and the catalyst is not deactivated after multiple uses, and has good stability.

The application belongs to the field of high polymer chemistry, and relates to a hyperbranched carbon dioxide-based polycarbonate as well as a preparation method and application thereof. The hyperbranched carbon dioxide-based polycarbonate is prepared by self-condensation polymerization of a monomer shown in formula I; in formula I, it is a three-arm structural unit derived from an initiator; and it is a carbon dioxide-based polycarbonate segment obtained by ring-opening addition polymerization of an epoxide and carbon dioxide. Compared with the prior art, the application has the following advantages: the application uses triethylborane catalyst and a mixture of TBD or DBU as a catalyst, efficiently catalyzes copolymerization of carbon dioxide and an epoxide monomer to prepare a hyperbranched carbon dioxide-based polycarbonate with a new structure, and improves the glass transition temperature and fat dissolving performance of the polymer.

A process for making L-glufosinate, the process comprising the following steps: a) reacting a compound according to formula (I), (I), wherein R1 is hydrogen, (C1-C12)-alkyl, (C1-C12)-haloalkyl, (C6-C10)-aryl, (C6-C10)-haloaryl, (C7-C10)-aralkyl, (C7-C10)-haloaralkyl, (C4-C10)-cycloalkyl, or (C4-C10)-halocycloalkyl, with a compound according to formula (II), (II), wherein R2 and R3 are independently from each other (C1-C8)-acyloxy, (C1-C8)-alkoxy or hydroxy, or R2 and R3 form together an epoxide group or an ethylene carbonate group, and optional subsequent acidic treatment to form a diol according to formula (III), (III), b) Oxidizing the diol according to formula (III) to form 2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid (PPO); and c) aminating the PPO to L-glufosinate.

Macromers and compositions, methods of making macromers and making objects and articles of manufacture, and objects and articles of manufacture. In various examples, a macromer comprises oligomer group(s) comprising one or more norbornene group(s). In various examples, a method of making macromer(s) comprises reacting oligomer(s), norbornene group precursor(s), and optionally, base catalyst(s) and / or aliphatic epoxide(s) to form the macromer(s). In various examples, a composition (which may be an emulsion), comprises macromer(s); and optionally, crosslinker(s), photoadditive(s), thermal additive(s), diluent(s), or any combination thereof. In various examples, a method of forming an object or an article of manufacture comprises irradiating or thermally treating a monolith comprising one or more composition(s), where crosslinking groups are formed. In various examples, an object or an article of manufacture, comprises at least partially crosslinked macromer(s) and may be porous and / or may comprise an interpenetrating network.

The present invention relates to a method for synthesizing terpinolene 4,8-epoxide. The method for synthesizing terpinolene 4,8-epoxide comprises the following steps: mixing a terpinolene raw material, a catalyst, a catalyst promoter and a solvent, and stirring to form a mixture solution, then mixing and reacting with an oxidant in a reactor, and purifying and drying to obtain terpinolene 4,8-epoxide. The present invention provides a method for synthesizing terpinolene 4,8-epoxide. The oxidation property of the reaction system adopted is moderate, the reaction conditions are mild, the double bond at the 4th position can be oxidized directionally, and the oxidation selectivity is very high. Finally, the selectivity to terpinolene 4,8-epoxide can reach more than 95% at most; meanwhile, the present invention overcomes the defect that the presence of water in the existing catalytic system easily causes ring-opening hydrolysis of the epoxidation reaction, accelerates the epoxidation reaction process, shortens the reaction time, increases the yield of the product, and the yield can reach more than 88% at most.

The invention discloses a novel metal-free iodine-based binary catalyst system, belongs to the technical field of organic catalysis and high polymer materials, and is characterized in that an iodine-based charge transfer compound composed of I2, tetrabutylammonium acetate (TBAAc) and other quaternary ammonium salts catalyzes and oxidizes heterobutane and cyclic anhydride for controlled alternate ring opening copolymerization. In addition, the method has been effectively applied to ring-opening copolymerization by combining an epoxide and a cyclic anhydride. The catalyst system in the preparation method disclosed by the invention has the advantages of low cost, easiness in obtaining, low potential toxicity and biodegradability, and has a great practical application value.

The present invention relates to the technical field of nanomaterial preparation, and discloses a method for preparing spherical silver nanometer powder induced by epoxide and the silver nanometer powder, which comprises the following steps: preparing a silver source solution, dropping an epoxide into the silver source solution under stirring conditions to obtain a mixed solution, preparing a reducing agent solution, mixing the reducing agent solution with the mixed solution, stirring at room temperature for 30 min, with a stirring speed of 200-600 rpm, then performing a heat reaction treatment to obtain a reaction product, and centrifuging, washing and drying the reaction product to obtain spherical silver nanometer powder; in the preparation process of the application, no dispersion protective agent is added, an epoxide is used as an inducer, and a saccharide substance is used as a reducing agent, and spherical silver nanometer powder with uniform particle size and morphology is prepared by controlling the concentration of reaction substances, the reaction temperature and the reaction time.

Provided is an emulsion-type epoxy resin curing agent composition that contains component (A): a reaction composition obtained by reacting 1.0-2.8 mol of a cyclic structure–containing polyamine (a2) with 1.0 mol of a polyepoxy compound (a1), component (B): a nonionic emulsifier having an HLB value of 14.0 or more and having an aromatic ring, component (C): a cosolvent, and water. Also provided is an aqueous epoxy resin composition that includes said composition.

The invention relates to a method for comprehensively utilizing kettle residues of an arylamine chain extender, which comprises the following steps: by taking the kettle residues formed by ester exchange and recrystallization of 1, 3-propylene glycol and para aminobenzoate as an initiator, carrying out addition reaction on the initiator and epoxide under the conditions that the temperature is 95-105 DEG C, the pressure is 0-0.15 MPa and no additional catalyst is added, thereby preparing liquid aromatic polyol, the aromatic polyol is a viscous liquid at room temperature, does not need to be heated and melted before use, has the functionality of 2.5-2.9, and can be used as a curing agent of polyurethane, and when the aromatic polyol is used as the curing agent, a polyurethane paving material, a polyurethane waterproof coating, a polyurethane adhesive and a polyurethane pouring sealant prepared from the aromatic polyol have good physical properties. The problem of environmental pollution caused by solid waste is solved, the resource utilization rate of substances is increased, the treatment process is simple and convenient, and the method is suitable for industrial treatment of kettle residues.

The present invention relates to catalyst composition for cyclic carbonate production from CO2 and epoxides under mild conditions, which can effectively catalyze the cyclic carbonate synthesis and provides good selectivity to cyclic carbonate, wherein said catalyst composition comprising:a) the metal complex as shown in structure (I):wherein,M represents transition metal atom;R1, R2, and R3 represent independent group selected from hydrogen atom, halogen atom, alkyl group, alkenyl group, alkynyl group, alkoxy group, amine group, phenyl group, benzyl group, cyclic hydrocarbon group comprising hetero atom, perfluoroalkyl group, or nitro group;R4 represents group selected from alkylene group, cycloalkylene group, or phenylene group;X represents group selected from hydrogen atom, acetate group, or triflate group; andb) the organic compound as the co-catalyst selected from compound containing nitrogen, compound of quaternary ammonium salts, or compound of iminium salts.

The present invention refers to a light emitting diode (LED) curable composition, wherein the composition comprises a cationic curable resin comprising a1) an epoxide, a2) an oxetane, a3) a cationic initiator, and a4) a photosensitizer, wherein the weight ratio between the epoxide a1) and the oxetane a2) is in the range of 1-5. The present invention also refers to the use of said LED curable composition for producing a coating that is cured with a LED light source at a wavelength in the range of 275-405 nm.

The invention discloses a hydroxymethyl phosphonate flame retardant and a preparation method and application thereof.The method comprises the steps that phosphorus trichloride and epoxide serve as starting raw materials and react in the presence of a catalyst to generate trichloro alkyl phosphite, the obtained triester structure is dropwise added into phosphorous acid, heat preservation reaction is conducted, and dichloro alkyl phosphite is obtained; and adding a catalyst 2 into the diester product, heating, slowly adding paraformaldehyde, and continuously reacting to obtain the hydroxymethyl phosphate flame retardant. The method is low in cost, mild in reaction condition, solvent-free, capable of being efficiently completed without extreme conditions, high in reaction speed and high in conversion efficiency, is compatible with existing chemical production equipment, and provides a solid foundation for large-scale industrial production.

Described herein is a method for making intermediates in the production of fragrance components starting from β-farnesene via a mixture comprising an epoxide represented by formula (III) as defined herein and an epoxide represented by formula (IV). In particular, methods for making acetylmethyl farnesol and hydroxyfarnesyl acetone and their homologues are described.

The application belongs to the technical field of photocatalytic CO2 cycloaddition reaction, and particularly relates to a preparation method of a vacancy defect layered bismuth semiconductor material and application of the vacancy defect layered bismuth semiconductor material in photocatalytic CO2 cycloaddition reaction. The material is based on a bismuth semiconductor material with a Sillen-Aurivillius structure, and a defect site is constructed by vacancy regulation of the material. Low-valence metal ions exposed by the vacancy defect can be used as Lewis acid sites to adsorb and activate epoxides, and the defect site can promote separation of photo-generated carriers, thereby enhancing surface reaction kinetics and effectively improving photocatalytic activity of the material, and finally promoting photocatalytic CO2 cycloaddition reaction performance.