645 results about "Butene" patented technology

The invention discloses a scratch repair coating and a preparation method thereof, and relates to the technical field of high polymer materials. When the scratch repair coating is prepared, hydroxylated boron nitride reacts with 1-(3-triethoxysilylpropyl)-2-imidazoline to prepare pre-modified boron nitride, and then the pre-modified boron nitride and 4-chloro-1-butene are subjected to quaternization to prepare modified boron nitride; the preparation method comprises the following steps: reacting styryl phosphonic dichloride with 4, 4, 5, 5, 6, 6, 7, 7, 7-nonafluoro-1, 2-heptanediol to prepare a hydroxyl-terminated phosphorus-fluorine-containing polymer; the preparation method comprises the following steps: reacting isophorone diisocyanate with a hydroxyl-terminated phosphorus and fluorine-containing polymer to prepare a polyurethane prepolymer; reacting the polyurethane prepolymer with hydroxyl-terminated coumarin to generate modified polyurethane; and uniformly mixing the modified polyurethane, the modified boron nitride and a photoinitiator to prepare the scratch repair coating. The scratch repairing coating prepared by the invention has good self-repairing performance, flame retardant property, corrosion resistance and mechanical property.

The invention discloses a preparation process of an antibacterial and anti-cracking plastic part for a refrigerator part. The preparation process comprises the following steps: preparing Ag ion antibacterial particles; the preparation method comprises the following steps: uniformly mixing transparent PP resin, Ag ion antibacterial particles, a styrene-ethylene-butylene-styrene block copolymer and a functional aid according to different proportions to respectively obtain a blend of a surface layer, a transition layer and a core layer; a five-layer co-extrusion die head is used for co-extrusion, all the layers are arranged in a surface layer-transition layer-core layer-transition layer-surface layer mode, and an extruded sheet is obtained; carrying out hot-pressing treatment on the extruded sheet, and inducing interlayer diffusion to form a blank with gradient change of the doping amount of the Ag ion antibacterial particles; and taking the blank, and carrying out post-treatment. The doping amount of the Ag ion antibacterial particles is changed in a gradient mode through multi-layer co-extrusion and hot pressing treatment, namely, the doping amount is gradually reduced from the surface layer to the core layer in the thickness direction, the doping amount in the same thickness plane is equal, the accessory has the advantages of being good in antibacterial performance and excellent in transparency, meanwhile, the usage amount of Ag is reduced, and cost is reduced.

The invention relates to the technical field of high polymer materials and sealing, in particular to a rubber gasket and a preparation method of the rubber gasket. The preparation method comprises the following steps: enhancing by using an ethylene-vinyl alcohol copolymer (EVOH) with the ethylene content of 29-48%, carrying out compatibility by using a styrene-ethylene-butylene-styrene block copolymer grafted maleic anhydride (SEBS-g-MA) with the grafting rate of more than or equal to 10%, carrying out synergistic reinforcement by using carbon black and nanoscale calcium carbonate, and carrying out premixing, hot-pressing vulcanization and acid environment aging treatment. Through EVOH enhancement, SEBS-g-MA compatibility, filler synergistic reinforcement and process optimization, multiple improvements of compatibility, mechanical properties, barrier property and acid resistance are achieved, key defects of a traditional EPDM gasket are overcome, and the EPDM gasket has remarkable technical advantages and practical value in the high-end sealing field (such as fuel cells and tunnel engineering).

The invention relates to the field of films, in particular to a low-temperature-resistant polypropylene matt film, a preparation method thereof and a cold laminating composite film, the matt film comprises a matt layer, a core layer and a laminating layer which are arranged in sequence; the matt layer comprises 45-55 wt% of polypropylene random copolymer and 45-55 wt% of high-density polyethylene, the core layer comprises homo-polypropylene and 5-10 wt% of poly (1, 4-butylene glycol-1-butylene random copolymer, and the laminating layer comprises homo-polypropylene and 2-5 wt% of n-alkyl maleate grafted modified ethylene-vinyl acetate copolymer. The matt film disclosed by the invention has proper flexibility in a low-temperature environment, proper adhesive force still exists between the fitting layer and the adhesive layer, and the matt film is smooth to wind and unwind during manufacturing and can be used as a base film of a low-temperature-resistant cold laminating film.

The invention relates to the technical field of cables, in particular to a high-flexibility ethylene-propylene insulating rubber material for a charging pile cable and a preparation process. The composite material comprises an ethylene propylene diene monomer, a thermoplastic polyolefin elastomer, an ethylene-butylene copolymer, nanoscale magnesium hydroxide, a silane coupling agent, dicumyl peroxide, a hindered phenol antioxidant and a phosphite antioxidant. The ethylene propylene diene monomer and the ethylene-butylene copolymer form a flexible network skeleton, and the ethylene-butylene copolymer and the thermoplastic polyolefin elastomer are subjected to molecular-level blending, so that the elongation at break and the bending fatigue resistance are improved; silane coupling agent modified nano magnesium hydroxide is chemically bonded with a rubber matrix, so that the flame retardance and thermal aging resistance are enhanced, and the negative influence of filler agglomeration on flexibility is reduced; the compound antioxidant system effectively inhibits thermal oxidation degradation at high temperature, avoids insulation failure, realizes collaborative optimization of high flexibility and high heat resistance, and improves the reliability and applicability of the charging pile cable.

The present invention relates to a composition in the form of a water-in-oil emulsion, including, (a) one or more esters formed from at least one fatty acid having more than 13 carbon atoms; (b) a polymer component including one or more polymerized (iso)butenes; (c) at least about 3% by weight of one or more carbohydrate fatty acid ester emulsifiers; (d) one or more fillers comprising hydrophobic silica; and (e) one or more pigments. The composition is substantially free of silicones & alkanes.

The present invention relates to a matting agent for HAA powder coatings and a preparation method thereof. The matting agent is a matting polymer containing special groups such as hydroxyl and epoxy groups with significantly different activities. The matting polymer is mainly prepared from glycidyl methacrylate, methyl methacrylate, butyl acrylate, 5-norbornene-2-methanol, 2-methyl-3-butene-2-ol, dicyclopentadiene dioxide, a hydroxyl polyester resin, and an accelerator. Due to the presence of hydroxyl and epoxy groups of varying activities in its structure, supplemented by the accelerator and the physical dispersion effect during the preparation process, the product has excellent matting ability and good storage and matting stability. It can reduce the gloss of HAA system powder coatings to 3-10%.

The present application relates to compositions comprising 3,3,4,4,4-pentafluoro-1-butene (HFO-1345zf, CF3CF2CH=CH2) processes of preparing such compositions and their use.

The invention discloses an ethylene dimerization catalyst composition and application thereof, the catalyst composition mainly comprises a cocatalyst and a main catalyst, the cocatalyst comprises the following raw materials by mole: 41%-90% of an aluminum-based compound, 9%-41% of a polymerization inhibitor A1, and 0.9%-16% of a dispersant B1; the main catalyst comprises the following raw materials: 13%-50% of a titanium-based compound, 50%-78% of a polymerization inhibitor A2 and 0%-7.9% of a dispersing agent B2, and the ethylene dimerization catalyst composition comprises a co-catalyst mainly composed of an aluminum-based compound, a polymerization inhibitor A1 and a dispersing agent B1 and a main catalyst mainly composed of the titanium-based compound, the polymerization inhibitor A2 and the dispersing agent B2. The polymerization inhibitor A1, the polymerization inhibitor A2, the dispersing agent B1 and the dispersing agent B2 are introduced, so that the catalyst has higher catalyst activity, generation of scaling polymers is effectively reduced, the catalyst can be used for producing 1-butene through ethylene dimerization, and the problem that a large number of polymers are produced as by-products in current industrial production can be effectively solved.

An olefin production system (1) comprises: a reactor (10) that generates water and a hydrocarbon, which contains a lower olefin, from a feedstock containing hydrogen and carbon dioxide and / or carbon monoxide; a first gas-liquid separation tank (20) that separates the product generated by the reactor (10) into a gas containing the lower olefin and a liquid containing water and a hydrocarbon that contains the lower olefin; and a second gas-liquid separation tank (30) that is connected to the first gas-liquid separation tank (20) and separates the gas containing the lower olefin from the liquid transferred from the first gas-liquid separation tank (20). The lower olefin contains at least one substance selected from the group consisting of ethylene, propylene, butene and butadiene.

The invention belongs to the technical field of direct preparation of low-carbon olefin from synthesis gas, and particularly relates to a catalyst and a method for preparing propylene and butylene by direct conversion of synthesis gas. The catalyst comprises a component A and a component B, the component A and the component B are compounded together in a mechanical mixing mode, an active component of the component A is a metal oxide, and the component B is an SAPO-14 molecular sieve or a heteroatom modified SAPO-14 molecular sieve. The synthesis gas is used as a reaction raw material, a conversion reaction is carried out on a fixed bed or a moving bed, the reaction process has very high product yield and selectivity, the selectivity of low-carbon olefin can reach 70%-90%, the selectivity of propylene and butylene can reach 60%-80%, the selectivity of propylene and butylene in low-carbon olefin can reach 75%-95%, and the selectivity of propylene and butylene in low-carbon olefin can reach 70%-90%. The ratio of propylene to butylene is 1.5-3.5, and the byproduct methane selectivity is low (lt; and the method has a good application prospect.

The invention relates to preparation and application of a metal oxide-molecular sieve composite catalyst, and belongs to the technical field of industrial catalysis. The catalytic reaction takes carbon dioxide and hydrogen as reaction raw materials, and the catalyst is formed by compounding a metal oxide and a molecular sieve. Wherein the metal oxide is a solid solution metal oxide or a spinel metal oxide composed of three or two metal elements of M1, M2 and M3, M1 is one of Zn, Ga and In, M2 is one of Ce, Sm, La and Fe, and M3 is one of Zr, Ga, Cr, Al and Ti; the framework of the molecular sieve is a silicon-aluminum-oxygen or silicon-phosphorus-aluminum-oxygen tetrahedron; the metal oxide is prepared by adopting a gas diffusion method. The metal oxide disclosed by the invention is prepared by adopting a gas diffusion method, and has a very high specific surface area (80-300 m < 2 > g <-1 >). The composite catalyst shows excellent performance in a reaction for preparing low-carbon olefins (ethylene, propylene and butylene) through carbon dioxide hydrogenation, the carbon dioxide conversion rate can reach 35% or above, the carbon monoxide selectivity is smaller than 40%, the selectivity of the low-carbon olefins in hydrocarbons can reach 82.1%, the yield of the low-carbon olefins reaches 20.3%, and the composite catalyst has high catalytic stability. Compared with a traditional catalyst, carbon dioxide and hydrogen can be efficiently adsorbed and activated, so that the conversion rate of carbon dioxide is increased, the preparation method is simple, the catalytic performance is excellent, and the catalyst has good industrial application prospects.

The present invention discloses a gas-phase preparation method of 1,1,1,4,4,4-hexafluoro-2-butyne. Using a mixture of 2,3-dichloro-1,1,1,4,4,4-hexafluoro-2-butene and hydrogen as raw materials, under the action of a particulate catalyst, 1,1,1,4,4,4-hexafluoro-2-butyne is obtained through a one-step hydrodechlorination reaction. The catalyst includes a carbon carrier and an active phase in the form of hollow spheres supported on the carbon carrier. The active phase includes: a first metal selected from at least one of silver, copper, nickel, and cobalt; and a second metal selected from at least one of palladium, platinum, and rhodium. The present invention has the advantages of high product selectivity, high catalytic activity, obtaining the reaction product through a one-step reaction, and being suitable for industrial application, etc.

This invention relates to the preparation and application of oxygen-carrying catalytic bifunctional particles in chemical looping combustion technology, specifically the use of perovskite oxygen carriers for the hydrogenation of CO2 to produce ethylene, propylene, and butene. The catalyst has suitable CO2 adsorption and dissociation capabilities, inhibiting olefin re-adsorption, reducing secondary olefin reactions, and improving olefin selectivity. The catalyst effectively inhibits the secondary hydrogenation of primary olefins, regulating the production of high-value-added C2-C4 lower carbon olefins.

The invention relates to the field of composite materials, in particular to a low-temperature-resistant polypropylene impact-resistant modified material, a preparation method thereof and an automobile part. The low-temperature-resistant polypropylene impact-resistant modified material provided by the invention is prepared from the following raw materials in parts by mass: 60-98 parts of homo-polypropylene; 5-15 parts of an ethylene-butylene copolymer elastomer; 1 to 10 parts of an SEPS elastomer; 0-30 parts, but not 0 part, of hydrated magnesium silicate; 0.1 to 1 part of a silane coupling agent; 0-8 parts of grafted polyethylene, but not 0 part; 0.1 to 1 part of an antioxidant; and 0.1-1 part of a processing aid. The low-temperature-resistant polypropylene anti-impact modified material provided by the invention can effectively improve the low-temperature-resistant and anti-impact properties, and meanwhile, good tensile property, bending property and high-temperature property are ensured.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof, and relates to the technical field of polypropylene materials. The polypropylene composite material comprises a polypropylene matrix and a toughening agent, the polypropylene matrix comprises homo-polypropylene and / or co-polypropylene; the toughening agent comprises a styrene-ethylene-butylene-styrene block copolymer and / or an ethylene-alpha-olefin copolymer; the melt mass flow rate of the homo-polypropylene measured under the conditions that the temperature is 230 DEG C and the load is 2.16 Kg is 20-50g / 10min; and the melt mass flow rate of the co-polypropylene measured under the conditions of 230 DEG C and 2.16 Kg load is 20-90 g / 10 min. The polypropylene composite material disclosed by the invention has the comprehensive properties of high modulus, high impact and low shrinkage.

The present invention discloses a hydroisomerization catalyst and a preparation method thereof, and a mixed C4 olefin hydroisomerization method, the hydroisomerization catalyst comprises a carrier and an active component loaded on the carrier, the carrier comprises a mixture of a carrier matrix and a modified metal, the modified metal is selected from at least one of VIB group metals, and the active component is selected from at least one of C4-C4 olefin and C4-C4 olefin. The active component comprises a metal M and / or an oxide thereof, and the metal M is selected from at least one of metal palladium, metal platinum, metal rhodium and metal ruthenium. The catalyst can catalyze the hydroisomerization conversion of butene-1 into butene-2, and has the advantages of high butene-1 conversion rate and high butene-2 selectivity.

A container closure, particularly a vacuum turnlock closure, comprises a sealing element containing or made of a polymer compound (excluding PVC). The polymer compound comprises at least one polybutene polymer, at least one polymer derived from at least partially 1,2-bonded isobutylene monomer, at least one (co)PP polymer, and optionally other components and additives. In a preferred embodiment, the polybutene polymer is a copolymer with ethylene in particular. In a preferred embodiment, the polybutene polymer has a Shore A hardness of less than 85.

The invention discloses bonding glue, a preparation method and application, and belongs to the technical field of bonding glue. According to the bonding adhesive provided by the embodiment of the invention, the styrene-ethylene-butylene-styrene block copolymer and the rosin modified resin are compounded, and the styrene-ethylene-butylene-styrene block copolymer and the rosin modified resin both have relatively good high-temperature resistance and play a synergistic effect; therefore, the temperature resistance of the bonding glue is effectively improved.

The invention provides a non-metallocene catalyst as well as a preparation method and application thereof, the molecular structure of the non-metallocene catalyst is as shown in formula 1: in the formula 1, R1 and R2 are independently one of H, methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl and tert-butyl. The non-metallocene catalyst provided by the invention has an open space structure and a multi-metal active center, and can catalyze butene-1 to generate a polymerization reaction with high activity, so that a bimodal wide-distribution polybutylene product is prepared.

Systems and methods for the preparation of (Z)-1, 1, 1, 4, 4, 4-hexafluoro-2-butene are provided. Compositions prepared according to one or more of the systems and methods described herein and methods of using these compositions are also provided.

The invention belongs to the field of photovoltaic technology, and provides a photovoltaic packaging adhesive film, a preparation method and application thereof, and a recovery method of a photovoltaic module. The photovoltaic packaging adhesive film comprises the following raw materials in specific amounts: matrix resin, a low-temperature cross-linking agent, a low-temperature catalyst, a silane coupling agent, an ultraviolet light stabilizer, an organic peroxide initiator, an assistant cross-linking agent and an alcohol compound serving as a reversible dynamic transesterification reaction group, the matrix resin is EVA (ethylene vinyl acetate), POE (polyolefin elastomer) and / or ethylene-butylene copolymer; the low-temperature cross-linking agent is a carboxylic ester type cross-linking agent, a bisoxazoline type cross-linking agent and / or a metal-organic ligand cross-linking agent with the reaction temperature of 150 DEG C or below; the low-temperature catalyst is a polynuclear metal catalyst, a solid acid resin catalyst, a solid base catalyst and / or a bimetallic MOF derivative catalyst with the reaction temperature of 150 DEG C or below. The adhesive film can realize recycling of the adhesive film and a photovoltaic module in a more efficient and energy-saving manner, is wide in adaptability, and has high crosslinking degree, peel strength and PID resistance.

Vessel closure (1, 21, 41, 61) with a sealing element (3, 23, 43, 63), wherein the sealing element (3, 23, 43, 63) comprises a polymer composition; the polymer composition comprising ... (a) between 5 wt.% and 50 wt.% of a first polymer, wherein the first polymer is a random copolymer having a Shore D hardness, measured according to DIN ISO 7619-1 at 23 °C, of ​​at least 35, and wherein 1-butene is a comonomer of the first polymer; (b) between 50 wt.% and 95 wt.% of a second polymer, wherein the second polymer is a polyolefin having a Shore A hardness, measured according to DIN ISO 7619-1 at 23 °C, of ​​not more than 90, in particular not more than 85, and wherein 1-butene is a comonomer of the second polymer; and (c) wherein the first polymer and the second polymer are different polymers.

The invention relates to a method for preparing aldehyde through butene hydroformylation, which comprises the following steps: dissolving a rhodium catalyst, a phosphite ester ligand and a butene raw material in an amide solvent to obtain a premixed solution, and keeping the premixed solution at 0 DEG C or below; adding the premixed liquid into a mixed atmosphere of hydrogen and carbon monoxide; heating the premixed solution to a preset temperature, and reacting for a preset time to obtain a mixed solution; after the mixed liquid is layered, upper liquid is obtained through liquid separation, an aldehyde product is obtained, and the butene raw material comprises at least one of 1-butene and 2-butene. In the reaction process, a ligand does not need to be supplemented, and the problem of more impurities caused by hydrolysis does not exist.

To provide a 3-methyl-1-butene copolymer and a 3-methyl-1-butene copolymer composition which can suppress thermal deterioration during processing while having excellent heat resistance and have both toughness and strength, and to provide a method for producing the 3-methyl-1-butene copolymer.SOLUTION: There is provided 3-methyl-1-butene copolymer which contains 3-methyl-1-butene copolymer resin, and has a melting point of 265.0 to 290.0°C, wherein breaking elongation X (%) and yield strength Y (MPa) measured in accordance with JIS K7161-1:2014 satisfy the following formula (1): Y>(-X / 16)+42.5...Formula (1).SELECTED DRAWING: None

The application discloses a system and method for preparing 1-butene by using catalytic C4, and belongs to the technical field of 1-butene production. The technical scheme is that the system comprises an etherification reactor, a catalytic distillation column, a deep etherification reactor, a light component removal column and a heavy component removal column which are sequentially connected. The application uses catalytic C4 as raw material to prepare 1-butene, widens the raw material source for preparing 1-butene, improves the utilization rate of catalytic C4, and has a good application prospect.

A method for converting plastic waste into polypropylene includes (a) converting the plastic waste into a hydrocarbon liquid stream and a gaseous hydrocarbon stream in a catalytic pyrolysis unit, wherein the gaseous hydrocarbon stream is greater than about 60% by weight of the output and contains greater than about 40% by weight of light olefins; (b) introducing the gaseous hydrocarbon stream into one or more separation units to produce a first propylene stream, a first ethylene stream, a first butene stream, and a saturated gas stream, wherein the saturated gas stream contains C1 to C4 saturated hydrocarbons; (c) optionally, feeding the first propylene stream into a purification unit to produce a polymer-grade propylene stream; and (d) feeding the first propylene stream and, if present, the polymer-grade propylene stream into a polymerization unit to produce polypropylene.

A method of selectively producing oligomers can include contacting at least one antifouling agent with a first amount of at least one aluminum alkyl compound to form at least one antifouling compound comprising the following structure or dimer form thereof: (I); and adding the at least one antifouling compound, an additional amount of the at least one aluminum alkyl compound, the at least one titanate compound, and ethylene to a jet loop reactor to oligomerize the ethylene to produce one or more of 1-butene, 1-hexene, or 1-octene. (I)

The invention relates to a method and device for preparing low-carbon olefins, and the method comprises the following steps: S1, contacting raw oil with a catalytic conversion catalyst in a catalytic conversion reactor for catalytic conversion reaction to obtain a catalytic conversion reaction product; s2, separating the catalytic conversion reaction product to obtain ethylene and propylene as well as a first circulating olefin flow containing butene and / or a second circulating olefin flow containing C5 + olefin; s3, enabling the olefin material to enter an etherification unit, and contacting the olefin material with an alcohol raw material under an etherification condition to obtain a circulating ether material and etherified olefin; and S4, enabling at least one part of etherified olefin to enter an isomerization unit, and carrying out isomerization reaction in the presence of an isomerization catalyst to obtain isomerized olefin. According to the method disclosed by the invention, the conversion of ethers into low-carbon olefins can be realized, the yield and selectivity of ethylene and propylene are improved, the yield of methane is reduced, the content of methanol in the product is reduced to the greatest extent, and the conversion of low-cost methanol into low-carbon olefins is realized.

The invention relates to a heterophasic polypropylene composition with high melting temperature, moderate softness and high impact strength. Specifically, the present invention relates to a heterophasic polypropylene composition comprising a propylene copolymer (A) matrix of propylene with ethylene and 1-butene comonomer units and a propylene ethylene elastomer (B) dispersed in the matrix. Furthermore, the present invention relates to a process for preparing said heterophasic polypropylene composition in the presence of a Ziegler-Natta catalyst, as well as to articles comprising said heterophasic polypropylene composition and to the use of said heterophasic polypropylene composition in articles.