460 results about "Butene" patented technology

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 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.

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.

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 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.

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.

A process for separating 1-butene from a C4 raffinate gas composition includes introducing the C4 raffinate gas composition to a reactor containing an adsorbent material and passing the C4 raffinate gas composition through the adsorbent material; adsorbing the 1-butene from the C4 raffinate gas composition onto the adsorbent material to separate the 1-butene from the C4 raffinate gas composition and form a residue gas composition; and desorbing the 1-butene by heating the adsorbent material after the adsorbing to form the 1-butene and regenerate the adsorbent material. The adsorbent material is at least one of a zeolite adsorbent and an alkali-modified zeolite adsorbent having at least 99% by weight selective towards 1-butene for adsorption in comparison to iso-butene and iso-butane.

This application discloses a method for preparing n-butene from isobutene, comprising the following steps: contacting a raw material containing isobutene with a catalyst and reacting to obtain a product containing n-butene; the catalyst is composed of MgAl2O4 and a hierarchical porous molecular sieve; and obtaining the catalyst through the following steps: 1) subjecting the molecular sieve to alkali treatment and acid treatment in sequence to obtain the porous molecular sieve; 2) wet mixing of magnesium source and aluminum source and calcining to obtain the MgAl2O4; 3) mixing the porous molecular sieve with the MgAl2O4 and calcining to obtain the catalyst.

The application discloses transparent polyethylene-butylene rubber granules, a preparation method and application thereof. Butadiene monomers are obtained by an anionic polymerization method to obtain BR raw glue liquid, and the BR raw glue liquid is subjected to catalytic hydrogenation to obtain polyethylene-butylene glue liquid; after the polyethylene-butylene glue liquid is concentrated by falling film evaporation, the transparent glue particles (EBBR) with a volatile matter content of less than or equal to 0.35% (mass fraction) are obtained by deep devolatilization and extrusion granulation through a double screw extruder, the EBBR has the characteristics of a wide molecular weight, non-crystallization, good elasticity, high strength and low volatile matter, and has excellent physical properties after being blended with PP and vulcanized, and simultaneously has good processing performance.

The butylene determination pretreatment device provided by the invention comprises: a sample introduction system, wherein the sample introduction system comprises a steel cylinder for containing a sample and a pretreatment sample introduction device communicated with the steel cylinder; the pretreatment sampling device is located at the front end of the waste gas treatment system, and the waste gas treatment system is connected with the pretreatment sampling device through a switching valve and a pipeline; the detection system comprises a gas chromatograph and a gas source which are connected, and the pretreatment sampling device is connected with the detection system; the pretreatment sampling device comprises a purification module, a heating module and a pressure reduction module which are connected, the purification module is connected with the steel cylinder, the heating module is arranged on the right side of the purification module, the pressure reduction module is arranged on the right side of the heating module, and the pressure reduction module is connected with the waste gas treatment system and the gas chromatograph; the waste gas treatment system comprises an adsorption device, a gas collection part and a flow control part; non-uniform sample gasification is avoided through the pretreatment sampling device, the obtained gas analysis result is good in repeatability, and a waste gas treatment device is added to complete sample purification.

To provide a polyolefin wax which is excellent in solubility and handleability, a resin composition containing the polyolefin wax, a coating agent containing the polyolefin wax, and an adhesive containing the polyolefin wax.SOLUTION: A polyolefin wax includes a constitutional unit derived from propylene and a constitutional unit derived from 1-butene. A content ratio of the constitutional unit derived from the propylene is 60 mol% to 95 mol%. A content ratio of the constitutional unit derived from the 1-butene is 5 mol% to 40 mol%. The melting point is lower than 105°C. The weight average molecular weight (Mw) is 3,000 to 70,000. The number of terminal unsaturated bond amounts per 1,000 pieces of carbon atoms, which is measured by 1HNHR, is 1 piece or less. The stereoregularity index, which is measured by 13CNMR, is 85% or more.SELECTED DRAWING: None

The application provides a method for preparing isobutylbenzene from benzene and butene, which comprises four reactions in sequence; the first reaction is to synthesize sec-butylbenzene from benzene and butene; the second reaction is to generate 2-phenyl-2-butene by dehydrogenation of sec-butylbenzene; the third reaction is to generate 2-methyl-1-phenylpropene by isomerization of 2-phenyl-2-butene; and the fourth reaction is to generate isobutylbenzene by hydrogenation of 2-methyl-1-phenylpropene; the butene comprises 1-butene and / or 2-butene. The method uses benzene and butene as raw materials, adopts a four-step continuous series fixed-bed reaction process to synthesize isobutylbenzene, is simple to operate, can realize continuous production, does not need to use the metal potassium-sodium catalyst used in the traditional isobutylbenzene synthesis process, has small safety risk, and is suitable for industrialized production of isobutylbenzene.

A process for converting whole crude oil and other heavy hydrocarbon streams to produce ethylene is provided. The process includes feeding a hydrotreated mid-boiling fraction, a hydrotreated resid fraction, or both, and a light boiling fraction to a steam cracker and recovering a light fraction. The light fraction is fed to a first separator and a C1-C3 stream and a mixed C4 and C4 + stream comprising isoolefins, olefins and dienes are recovered, and the mixed C4 and C4 + stream is fed to a second separator and a mixed C4 stream comprising isoolefins, olefins and C4 + streams is recovered. A portion of the mixed C4 stream is dimerized in a dimerization unit to produce a dimerization product stream, hydrogenated in a total hydrogenation system to produce a hydrogenated dimerization product stream, and cracked in a thermal cracking reactor system to produce one or more of hydrogen, methane, ethylene, propylene, n-butene, and isobutene.

The present disclosure relates to processes for producing isobutylene and isobutylene- based polymers. In some embodiments, a process includes dehydrating a bio-based isobutanol in an isobutanol dehydration unit to form a butenes composition. The process includes providing the butenes composition to one or more of an acid extraction unit or a butyl ether formation unit.

The application belongs to the technical field of polymer preparation, and discloses a preparation method of high isotactic polybutene-1. 10 The application discloses a preparation method of high isotactic polybutene-1, which comprises the following steps: carrying out a polymerization reaction on butene-1 and optional C2-C 10 α-olefin monomers under the action of a Ziegler-Natta catalyst system; the Ziegeller-Natta catalyst system contains a solid catalyst component, an organic aluminum compound and an external electron donor; the solid catalyst component contains a catalyst carrier, an internal electron donor and a reaction product of a halide containing titanium, and the internal electron donor contains a carboxylic acid ester compound and a polyhydric alcohol ester compound; the polymerization reaction conditions include that the polymerization temperature is 0-150 DEG C, and the polymerization pressure is higher than the saturated steam pressure of butene-1 at the corresponding polymerization temperature. The preparation method has high polymerization activity, and the obtained polymer has high isotacticity.

The utility model provides a liquid 1-butene vaporization device, and relates to the technical field of chemical raw material quality inspection, the liquid 1-butene vaporization device comprises a sampling steel cylinder, a vaporization chamber, a non-adsorption aluminum foil gas bag and a six-way gas sample injection valve, the device ensures the controllability of the total amount of vaporized sample gas and the consistency of the composition proportion by accurately quantifying a liquid sample, and the liquid 1-butene vaporization device is simple in structure and convenient to operate. By means of complete vaporization of the vaporizing chamber and buffering of the non-adsorption aluminum foil air bag, vaporized sample components are mixed evenly, light and heavy components of a gas sample collected by the six-way gas sample injection valve are distributed evenly, the sample detection accuracy is ensured, the sample cannot be adsorbed in the sampling process, and the sampling efficiency is improved. According to the device, a taken sample can be completely vaporized through the vaporizing chamber, and a completely vaporized gaseous sample can be completely transferred through the arrangement of the one-way valve, so that errors cannot be caused to later detection of the sample, and the problems that in the prior art, a detection result is deviated, and errors are easily caused to later detection of the sample are solved.

The invention relates to the technical field of organic synthesis, and discloses a double-center non-metallocene catalyst and a preparation method thereof, and a butene-1-based elastomer and a preparation method thereof. Wherein the double-center non-metallocene catalyst comprises a structure as shown in a formula I; in the formula I, R1-R5 are independently selected from H or C1-C8 alkyl groups, R6 is selected from C1-C5 alkyl groups, aryl groups or aryl groups containing C1-C5 alkyl substituent groups, and R7 is selected from methyl and / or ethyl. When the double-center non-metallocene catalyst provided by the invention is used for catalyzing a polymerization reaction of butene-1 and long-chain alpha-olefin, the insertion rate of an alpha-olefin monomer with large steric hindrance can be increased, and the growth of a polymerization chain is facilitated; and the butene-1-based elastomer material with large molecular weight, narrow molecular weight distribution, low glass transition temperature and high random copolymerization unit content can be prepared.

A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with hydrogen fluoride in the vapor phase in the presence of a fluorination catalyst. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene further comprises contacting E-1,1,1,4,4,4-hexafluoro-2-butene with chlorine in the presence of a catalyst to produce 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane, followed by reaction with a base to produce 1,1,1,4,4,4-hexafluoro-2-butyne, and subsequently hydrogenating hexafluoro-2-butyne to produce Z-1,1,1,4,4,4-hexafluoro-2-butene.

The application discloses a high-strength high-ductility diaphragm and a preparation method thereof. The high-strength high-ductility diaphragm comprises ultrahigh molecular weight polyolefin and a solubilizing agent, wherein the solubilizing agent is a mixture of one or more of ethylene-propylene copolymer, ethylene-butene copolymer and ethylene-octene copolymer. The preparation method comprises the following steps: mixing the ultrahigh molecular weight polyolefin, the solubilizing agent and a pore-forming agent, stirring until uniform to obtain premixed raw materials; injecting the premixed raw materials into an extruder, heating to obtain a thermodynamic single-phase melt, and melt casting the thermodynamic single-phase melt onto a cooling roller to obtain a crystalline casting sheet; once stretching the crystalline casting sheet, cooling to obtain a once-stretched film, twice stretching the once-stretched film to obtain a twice-stretched film, washing, drying to obtain the high-strength high-ductility diaphragm. The preparation method utilizes the solubilizing effect of the copolymer and multiple step-by-step stretching, so that the diaphragm has excellent ductility and tensile strength.

The invention relates to the field of high polymer material modification, in particular to a wear-resistant rubber composition based on wear-resistant filler and a preparation method. The wear-resistant filler is prepared by the following steps: reacting DOPO with isophorone diisocyanate to prepare isocyanate modified DOPO, reacting the isocyanate modified DOPO with 2-butene-1, 4-diamine to prepare alkenyl modified DOPO, and reacting the alkenyl modified DOPO with amino modified MMT / SiO2 and isophorone diisocyanate to prepare the wear-resistant filler. The introduction of the inorganic filler montmorillonite and silicon dioxide can effectively improve the wear resistance of the rubber, the introduction of the flame retardant DOPO can effectively improve the flame retardant property of the rubber, and the flame retardant DOPO is connected with the flame retardant through temperature chemical bonds and has good dispersion capacity in the rubber composition.

The present invention relates to a method for the preparation of 3-methyl-3-butene-1-ol (isoprenol), comprising the steps of preparing isobutylene (also: isobutene, 2-methylpropene) by contacting 3-methylbutan-1-ol (isoamyl alcohol) to a catalyst comprising at least one catalytically active metal and reacting at least one formaldehyde source and the isobutylene obtained in step a-i) to obtain isoprenol. Furthermore, the present invention refers to processes for the preparation of 3-methyl-2-butene-1-ol (prenol), of 3-methyl-3-butenal (isoprenal), of 3-methyl-2-butenal (prenal), and of 3,7-dimethy l-octa-2, 6-dienal (citral) and further downstream products comprising the use of isoprenol of the present invention and the resulting products and product streams.