118 results about "Alpha-olefin" patented technology

The present disclosure relates to a process for polymerising olefins in multistage polymerisation process configuration. The process comprises polymerising, in a reactor, first olefin monomer, optionally in the presence of at least one alpha olefin comonomer, in the presence of a polymerisation catalyst to produce a first polymer component (A); polymerising, in a downstream gas phase reactor, second olefin monomer at a first operating pressure in the presence of the first polymer component (A) and optionally in the presence of at least one alpha olefin comonomer to produce a second polymer component (B) at a production rate that provides a weight ratio of first polymer component (A) to second polymer component (B) that is below a target threshold value; and increasing the first operating pressure to a second operating pressure in the downstream gas phase reactor when the weight ratio of first polymer component (A) to second polymer component (B) increases above the target threshold value.

A composition having a recycle content value is obtained by reacting a recycle content feedstock to make a recycle content alpha olefin or by deducting from a recycle inventory a recycle content value applied to an alpha olefin composition. At least a portion of the recycle content value in the feedstock or in an allotment obtained by an alpha olefin manufacturer has its origin in recycled waste and / or pyrolysis of recycled waste and / or in thermal steam cracking of recycle content pyoil.

The application relates to the field of photovoltaic packaging adhesive films, and discloses a preparation method of a high-crosslinking-degree POE packaging adhesive film and a photovoltaic module. The preparation method comprises the following steps: mixing an ethylene-alpha olefin copolymer and an initiator, and reacting at a temperature higher than an initiation temperature of the initiator to obtain a modified polyolefin resin; the initiator is at least one of dicumyl peroxide, methyl ethyl ketone peroxide and di-tert-butyl peroxide; raw materials including the modified polyolefin resin, a crosslinking agent and a crosslinking aid are taken; the crosslinking agent is at least one of tert-amyl peroxy(2-ethylhexyl) carbonate, dicyclohexyl peroxydicarbonate and azobis isobutyronitrile; and all the raw materials are blended and extruded at a temperature higher than an initiation temperature of the crosslinking agent and not higher than 110 DEG C to be shaped. By using the preparation method, the POE packaging adhesive film has high crosslinking degree and crosslinking speed, good PID resistance and long-term stability, and is also endowed with high light transmittance and low haze.

A process for producing branched aldehyde intermediates from alpha olefins, and further reacting said branched aldehyde intermediates via hydrogenation reactions, surfactant forming reactions and other chemical derivative forming reactions to produce branched alcohols, branched surfactants and other branched derivatives. A process for producing isomerized olefins, branched aldehydes, branched alcohols, branched surfactants and other branched derivatives through isomerization, hydroformylation, hydrogenation, surfactant forming reactions and other derivative forming reactions.

The invention belongs to the technical field of petrochemical engineering and fine chemical engineering separation, and discloses a method and device for separating alpha-olefin and isomers thereof by using metal-based ionic liquid and application, and the method comprises the following steps: mixing a raw material solution containing target alpha-olefin with an extraction agent; performing liquid-liquid extraction; after standing and layering, respectively collecting an extraction phase and a raffinate phase; components in the extraction phase and the raffinate phase are qualitatively and quantitatively analyzed, and the partition coefficient, the separation selectivity and the purity are evaluated; and analyzing the target alpha-olefin in the extraction phase, and recovering through a reduced pressure rotary evaporation process. According to the method, the metal-based ionic liquid with dual effects of pi-complexation and spatial recognition is introduced as the extraction agent, so that high-selectivity recognition and enrichment of the target normal alpha-olefin are realized, interference of internal olefin, branched olefin and saturated isoparaffin is effectively inhibited, and the purity and selectivity of the target component are remarkably improved.

A process for producing branched aldehyde intermediates from alpha olefins, and further reacting said branched aldehyde intermediates via hydrogenation reactions, surfactant forming reactions and other chemical derivative forming reactions to produce branched alcohols, branched surfactants and other branched derivatives. A process for producing isomerized olefins, branched aldehydes, branched alcohols, branched surfactants and other branched derivatives through isomerization, hydroformylation, hydrogenation, surfactant forming reactions and other derivative forming reactions.

Ethylene, alpha olefins, and other olefinically unsaturated monomers may be polymerized under fluidized bed polymerization reaction conditions in the presence of a Ziegler-Natta catalyst. A recycle stream featuring an induced condensing agent (ICA) comprising isobutane may increase catalyst productivity while maintaining quality of the polymer product, particularly when the recycle stream is delivered to a reactor containing the fluidized bed under conditions suitable to form a condensed or super-condensed mode in the recycle stream. The recycle stream may comprise unreacted olefinic monomers, and isobutane or a mixture of isobutane and isopentane.

The present invention relates to a method for processing pyrolysis oil from polyolefin-based plastic. The method of the present invention avoids wastage of high-added-value alpha olefins and thus improves the yield of alpha olefins by pre-separating pyrolysis oil into multiple streams and then processing the streams and also achieves good yields of lower olefins (such as ethylene, propylene and butadiene), thereby increasing the economic value of the chemical cycle of polyolefin waste plastics.

The application belongs to the technical field of cutting oil, and specifically provides a kind of composite cutting oil and a preparation method thereof.A kind of composite cutting oil uses coconut oil, mineral oil, poly-alpha olefin as mixed base oil, adds specific amount of rust preventive, polyethylene glycol, nano molybdenum disulfide, antioxidant, dispersant and composite additive obtained by chemical combination of carboxylated multi-walled carbon nanotube surface and thiophosphate amine salt, etc., through the synergistic effect of multiple components, the prepared cutting oil has excellent lubricity, extreme pressure and wear resistance, and is suitable for severe extreme pressure cutting environment.

The invention discloses an organic silicon cooling liquid for immersed liquid cooling and a preparation method and application thereof.The organic silicon cooling liquid is prepared from raw materials including 1, 1, 3, 3-tetramethyldisiloxane, long-chain alpha olefin, a phenyl siloxane ring body, a methyl siloxane ring body and the like through hydrosilylation and ring-opening chain extension polymerization reaction under the action of a catalyst to precisely regulate and control a molecular structure, and the organic silicon cooling liquid is prepared. And the long-chain alkyl-terminated polysiloxane with phenyl on the side chain is prepared. The prepared polysiloxane product has the advantages of being low in viscosity, high in flash point, low in pour point, high in heat conductivity coefficient and the like when being used as cooling liquid, and compared with fluorine-containing series cooling liquid which is used at present, the cost is reduced by 80% or above, so that the polysiloxane product has wide prospects in immersed cooling application in the fields of data centers, charging piles, new energy batteries and the like.

Disclosed herein are well treatment compositions and methods. In a specific embodiment, a well treatment compositions includes a surfactant composition that includes: one or more surfactants, where the one or more surfactants includes: sodium alpha olefin sulfonate, cocamidopropyl hydroxysultaine, and mixtures thereof, where the one or more surfactants are present, and where the surfactant composition has a content of the one or more surfactants from about 0.1% / wt. to about 50.0% / wt.; and one or more carrier media, where the one or more carrier media are present, and where the surfactant composition has a content of the one or more carrier media from about 50.0% / wt. to about 99.9% / wt., where the surfactant composition as a hydrophilic-lipophilic balance of about 11.0 to about 14.0; and where the surfactant composition has a surface tension from about 25 dynes / centimeter to about 35 dynes / centimeter.

A lubricating oil composition is disclosed. The composition includes a major amount of an oil of lubricating viscosity, one or more alkylhydroxy benzoate compound derived from isomerized normal alpha olefins, and oxidation inhibitor system comprising a molybdenum-containing antioxidant and a diphenylamine. The molybdenum-containing antioxidant is present in an amount to provide at least 120 ppm of Mo to the lubricating oil composition. The diphenylamine is present in an amount to provide 0.5 wt. % or more to the lubricating oil composition.

The invention discloses an AOS sulfonation improvement process which comprises the following steps: a) adopting a jacketed pipeline type reactor, carrying out sulfonation reaction under the regulation and control of a refrigerating unit, and controlling the reaction temperature to be 10-25 DEG C; b) arranging an intermediate storage tank, and controlling the retention time of a sulfonated product to be 30-60 minutes; c) carrying out segmented temperature control on the neutralization stage through three groups of independent cooling coils, wherein the temperature error of each stage is less than or equal to 1 DEG C; d, the flow speed of chilled water is increased through a circulating pump, and the heat exchange area is increased by 50%-100%; and e) dehydrating the alpha-olefin raw material before sulfonation until the water content is less than or equal to 50ppm. The feeding stability of the raw material alpha olefin in the sulfonation process is improved, and the generation of byproducts is effectively reduced.

Provided in this disclosure are titanium complexes that contain 1) a cyclopentadienyl ligand; 2) an adamantyl-phosphinimine ligand; and 3) at least one activatable ligand. The use of such a complex, in combination with an activator, as an olefin polymerization catalyst is demonstrated. The catalysts are effective for the copolymerization of ethylene with an alpha olefin (such as 1-butene, 1-hexene or 1-octene) and enable the production of high molecular weight copolymers (Mw greater than 25,000) at high productivity under solution polymerization conditions.

The invention discloses a cooling liquid, which is prepared from the following ingredients in percentage by mass: 89 to 98 percent of low-viscosity poly-alpha olefin, 1 to 8 percent of high-viscosity poly-alpha olefin, 0.01 to 0.5 percent of modified nanometer insulating heat-conducting fluid, 0.2 to 2.5 percent of alkyl naphthalene, 0.01 to 0.5 percent of antioxidants and 0.03 to 0.06 percent of anti-foaming agents. The preparation method of the modified nano insulating heat-conducting fluid comprises the following steps: S1, uniformly stirring the polyisobutylene succinimide dispersing agent, the sulfurized alkylphenate and the antioxidant to obtain a mixture; and S2, adding nano solid particles into the mixture, and carrying out ultrasonic dispersion. According to the cooling liquid and the preparation method and application thereof, the modified nano insulating heat-conducting fluid, the antioxidant, the anti-foaming agent and the like are added into the poly-alpha-olefin, so that the immersed cooling liquid which is good in stability and capable of prolonging the service life and improving the heat transfer and heat conduction performance is formed.

The invention belongs to the technical field of thermoplastic elastomers, and relates to a low-compression permanent deformation nylon-coated thermoplastic elastomer as well as preparation and application thereof. The low-compression permanent deformation nylon coated thermoplastic elastomer is prepared from the following components in parts by weight: 100 parts of hydrogenated styrene elastomer, 30 to 300 parts of maleic anhydride grafted ethylene-alpha olefin-ethylene block polymer, 50 to 250 parts of hydrogenated white oil and 10 to 250 parts of filler, the maleic anhydride grafting rate of the maleic anhydride grafted ethylene-alpha olefin-ethylene block polymer is 0.2 to 1.5 percent; the compression set of the compression set nylon coated thermoplastic elastomer does not exceed 45%; and the compression permanent deformation nylon coated thermoplastic elastomer is injected onto the nylon substrate spline, and the peel strength measured after injection molding is not lower than 1.6 kN / m. The product provided by the invention is easy to process, the bonding strength of the coated nylon is high, and the compressive deformation resistance is good; the preparation method is simple; the application range is wide.

The invention relates to the technical field of polyethylene high polymer materials, and particularly discloses a high-strength polyethylene material for water supply engineering and a preparation method of the high-strength polyethylene material. The high-strength polyethylene material for the water supply engineering comprises the following components in parts by weight: 100 parts of high-density polyethylene, 20-30 parts of a modified ethylene-alpha olefin copolymer, 2-5 parts of an ethylene-glycidyl methacrylate copolymer, 1-2 parts of an antioxidant and 2-3 parts of a lubricant, the modified ethylene-alpha olefin copolymer is prepared by the following steps: carrying out melt blending extrusion on an ethylene-alpha olefin copolymer and a pore-foaming agent, putting a molded blend into deionized water, continuously soaking for 12-16 hours, taking out and drying. Through the synergistic effect of physical modification and chemical compatibility, the prepared polyethylene material has excellent toughness, strength and environmental stress cracking resistance, and is especially suitable for water supply pipes.

The utility model discloses a poly-alpha olefin base oil detecting and sampling device, which belongs to the technical field of detecting and sampling devices, and comprises a workbench and a detecting and sampling mechanism body, the middle of the workbench is fixedly connected with a top plate, one side of the workbench is connected with an air cylinder, the bottom of the top plate is provided with a lifting assembly, and the lifting assembly comprises an adjusting plate. According to the poly-alpha olefin base oil detection sampling device, the lifting assembly is additionally arranged, so that detection personnel can obtain sample data at different depths at the same time, the property of the whole oil product can be comprehensively known, and the detection accuracy is improved. According to the poly-alpha olefin base oil detection sampling device, the lifting assembly is additionally arranged, so that the detection process becomes convenient and simple, the detection efficiency can be improved, and the detection cost can also be reduced.

The invention provides low-temperature-resistant automotive interior leather which comprises a polyolefin base material layer, the polyolefin base material layer comprises a compact layer, the compact layer is composed of a polyolefin composition and an auxiliary agent, the auxiliary agent is dispersed in the polyolefin composition, the polyolefin composition is composed of an ethylene-alpha olefin copolymer serving as a continuous phase and ethylene propylene diene monomer serving as a dispersed phase, and the polyolefin base material layer comprises a low-temperature-resistant layer and a low-temperature-resistant layer. The compact layer has the crosslinking degree of more than or equal to 30%, the melting point of the ethylene-alpha olefin copolymer is less than or equal to 70 DEG C, the Mooney viscosity of the ethylene propylene diene monomer is more than or equal to 25 MU and less than or equal to 45 MU, and the compact layer has good application performance under the condition of normal temperature and has soft hand feeling and excellent folding resistance under the condition of low temperature; the problem that an existing leather product is rigid and prone to cracking at low temperature is solved.

The application discloses a group IVB metal complex and a preparation method and application thereof. The metal complex has a structural expression as shown in the following formula. The group IVB metal complex disclosed by the application not only maintains high polymerization activity, but also obtains high molecular weight polyolefin elastomer in the application of catalyzing ethylene and alpha olefin copolymerization, and has an industrial application prospect.

A process for producing branched aldehyde intermediates from alpha olefins, and further reacting said branched aldehyde intermediates via hydrogenation reactions, surfactant forming reactions and other chemical derivative forming reactions to produce branched alcohols, branched surfactants and other branched derivatives.A process for producing isomerized olefins, branched aldehydes, branched alcohols, branched surfactants and other branched derivatives through isomerization, hydroformylation, hydrogenation, surfactant forming reactions and other derivative forming reactions.

A polyethylene-based composition may include an ethylene-based copolymer produced from ethylene and one or more C3-C10 alpha olefin comonomers, wherein the ethylene-based copolymer has: a density ranging from 945 kg / m3 to 961 kg / m3 according to ASTM D792, a melt flow rate (MFR2) ranging from 0.5 g / 10 min to 3.0 g / 10 min according to ASTM D1238 at 190° C. / 2.16 kg, a molecular weight distribution (Mw / Mn) ranging from 3 to 25, and a stress exponent (SEx) ranging from 1.0 to 1.8.

The invention discloses a polyolefin cable material based on graphene composite filler and a preparation method of the polyolefin cable material, belongs to the technical field of polyolefin cable materials, and aims to solve the technical problem that the mechanical strength, flame retardance, thermal aging resistance and dielectric strength of a graphene-based polyolefin cable material in the prior art need to be further improved. The polyolefin cable material based on the graphene composite filler is prepared from the following components in parts by weight: 60 parts of polypropylene, 30 to 35 parts of poly alpha olefin, 25 to 28 parts of PDMS (Polydimethylsiloxane) coated graphene and 5 to 6 parts of 4-allyl-2, 6-di-tert-butylphenol. The polyolefin cable material with excellent mechanical property, thermal oxidation resistance, flame retardance and dielectric property is prepared by preparing nitrogen and phosphorus modified graphene, loaded graphene, loaded furan olefin polysiloxane and PDMS coated graphene and melting, mixing and extruding the nitrogen and phosphorus modified graphene, loaded graphene, loaded furan olefin polysiloxane and PDMS coated graphene with auxiliaries such as polypropylene and poly-alpha-olefin.

The present application belongs to the field of wire and cable insulation materials. The epoxy poly-alpha olefin oligomer, two components containing epoxy groups, epoxy modified silica and acrylic acid grafting material are introduced into the curable cable material composite system, thereby improving the flexibility, low temperature brittleness and aging resistance of the cable material. Finally, in addition to using carboxyl-epoxy crosslinking, the cable material cured product also introduces a blocked isocyanate as a crosslinking agent, which is unblocked to form a highly reactive isocyanate at high temperatures, which is crosslinked with the hydroxyl group formed after the ring opening of the carboxyl-epoxy group, thereby reducing the dielectric loss of the cable material and improving its breakdown strength.

The present invention relates to a flame retardant polymer composition comprising at least the following components (A) 10.0 to 30.0 wt.-% based on the overall weight of the polymer composition of a cross-linkable ethylene copolymer containing units with hydrolysable silane groups; (B) 5.0 to 20.0 wt.-% based on the overall weight of the polymer composition of a copolymer of ethylene and a C4 to C10 alpha olefin comonomer having a density in the range of 860 kg / m3 to 965 kg / m3 determined according to ISO 1183; (C) 50.0 to 70.0 wt.-% based on the overall weight of the polymer composition of a filler selected from the group consisting of aluminium hydroxide, magnesium hydroxide and mixtures thereof; (D) 0.50 to 3.0 wt.-% based on the overall weight of the polymer composition of silicone fluid and / or a silicon gum; and (E) 1.0 to 10.0 wt.% based on the overall weight of the polymer composition of a polyethylene containing units originating from maleic anhydride; and / or wherein the weight proportions of components (A) to (E) add up to 100 wt.-%. In addition, the present invention refers to a wire or cable comprising at least one layer comprising the polymer composition according to the present invention, a method for producing the polymer composition and to the use of the polyolefin composition according to the present invention as a flame retardant layer of a wire or cable.

The application discloses an antioxidant composition, a rare earth permanent magnet, a sintered magnet material and a preparation method. The antioxidant composition comprises the following components: poly-alpha olefin 30mas% to 60mas%; butyl oleate 10mas% to 30mas%; fatty acid methyl ester 1mas% to 20mas%; and solvent oil 10mas% to 40mas%. The antioxidant composition can improve the dispersibility of the powder and the grinding efficiency, has excellent wettability, can well wrap the magnetic powder, prevents the contact between oxygen, nitrogen and the magnetic powder, plays an antioxidation role, reduces the nitrogen content, and ensures the high remanence and coercive force of the sintered magnet and the rare earth permanent magnet under the premise of high carbon content.

The utility model discloses a two-stage extraction and secondary regeneration alpha olefin extraction device belongs to the technical field of extraction equipment. The device includes sequentially communicating primary extraction tower, primary extraction phase buffer tank, primary regeneration tower, secondary extraction tower, secondary extraction phase buffer tank, secondary regeneration tower, qualified oil product buffer tank, condensation recovery system and precision filter etc. component. Through two-stage extraction and secondary regeneration design, combine vacuum distillation (-0.08~0.095MPa, 150~180 DEG C) and precision filtration (0.1 micrometre ceramic membrane, 0.25 micrometre polytetrafluoroethylene filter core), realized oxygen compound removal rate >99%, alpha-olefin yield is 98%, and product purity reaches 99.5% or more. The device adopts double closed loop circulating system, and extraction agent recycling utilization rate >95%, and energy consumption reduces 40%, and waste liquid toxicity reduces 90%, solves the problem such as low efficiency, high energy consumption, and incomplete regeneration in traditional process, is applicable to the high -efficient purification of alpha-olefin in coal -based fischer -tropsch synthesis oil.

The invention discloses a circular flow method for normal-temperature conveying of thick oil through a horizontal circular pipe, and relates to normal-temperature conveying of the thick oil in a wide flow ratio by using dimethyl silicone oil and poly-alpha olefin oil as fluid for isolating the thick oil. The dimethyl silicone oil and the poly-alpha olefin oil are used as circulation media, the difference between the apparent viscosity of the circulation media and the thick oil at 25 DEG C and 5 s <-1 > is 50-300 times, the kinematic viscosity of the circulation media and the thick oil at the temperature of-20 DEG C is 500-3000 cSt, the pipeline temperature is the normal temperature of 25 + / -5 DEG C, and the wide flow ratio is that the volume flow ratio range of the thick oil and the circulation media is 0.5-4.0. According to the circulation flowing method for conveying the thick oil at the normal temperature through the horizontal circular pipe, stable circulation flowing can be formed in the hydrophilic circular pipe and the lipophilic circular pipe with the horizontal smooth inner wall through a simple device, the thick oil is prevented from adhering to the wall, and the flowing method which is low in energy consumption, not prone to instability and easy to separate subsequently is provided for long-distance pipeline conveying of the thick oil at the natural environment temperature.

This description provides titanium complexes containing 1) a cyclopentadienyl ligand; 2) an adamantyl-phosphinimine ligand; and 3) at least one activatable ligand. The use of the complex, in combination with an activator, as an olefin polymerization catalyst is demonstrated. The catalysts are effective for the copolymerization of ethylene with an alpha olefin (such as 1-butene, 1-hexene, or 1-octene) and enable the production of high molecular weight copolymers (Mw greater than 25,000) with high productivity under solution polymerization conditions.