57 results about "Alpha-olefin" patented technology

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.

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 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.

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 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 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.

A composition is provided that includes about 2 wt. % to about 25 wt. % of a copolymer including ethylene and vinyl acetate; about 2 wt. % to about 20 wt. % of a copolymer including an α-olefin and maleic anhydride; and about 55 wt. % to about 96 wt. % of a solvent. The composition can be used to decrease the pour point of a hydrocarbon, such as crude oil.

The invention belongs to the technical field of lubricating grease preparation, and provides electric automobile driving motor bearing anti-electrocorrosion lubricating grease and a preparation method thereof. According to the lubricating grease, poly-alpha olefin and synthetic ester are used as compound base oil, modified polyurea generated in situ is used as a thickening system, a 2-ureido-4 [1H]-pyrimidone unit is covalently grafted on a molecular skeleton of the modified polyurea, and structural recombination and recovery can be achieved through reversible association; the lubricating grease further comprises over-alkalized calcium petroleum sulfonate, an oil-soluble antirust agent, an antioxidant, an ash-free anti-wear agent and a metal deactivator, a water-triggered release type self-repairing microcapsule is introduced, in-situ curing and condensation reaction occur after water infiltration, a continuous and compact barrier film layer is formed on the metal surface, and interface self-repairing and defect covering are achieved. The preparation method comprises the following steps: dehydrating and degassing the base oil, carrying out thickening reaction and grafting modification, sequentially adding and mixing the functional additive, dispersing the microcapsule at low temperature, and carrying out vacuum defoaming and curing to obtain a finished product.

The application discloses a process for preparing high-carbon internal olefins from Fischer-Tropsch oil as raw material, which comprises the following steps: a, Fischer-Tropsch oil is subjected to vacuum rectification in a vacuum tower to obtain a first gas phase and a first oil phase; b, the first gas phase is output from the top of the vacuum tower and enters an extraction tower, an extractant is introduced into the extraction tower from the middle and upper part of the extraction tower, mixed with the first gas phase and extracted to obtain a second gas phase and a second oil phase; c, the second gas phase is output from the top of the extraction tower and subjected to rectification in a first rectification tower to obtain a third gas phase and a third oil phase; and d, the third oil phase is output from the bottom of the first rectification tower and subjected to reaction in an isomerization reactor to obtain a target product. The process for preparing high-carbon internal olefins from Fischer-Tropsch oil as raw material can effectively avoid the loss of alpha olefins, has the advantages of low energy consumption, high efficiency, economy and environmental protection, and the obtained high-carbon internal olefin product has good sizing performance.

The present invention relates to a process for preparing an alpha-olefin feed stream comprising providing a low-pressure initial stream comprising a hydrocarbon solvent at a low pressure level in the range of from below atmospheric pressure to 15 barg; pressurizing the low-pressure initial stream to a medium pressure level in the range of from greater than 15 to 45 barg to form a medium-pressure initial stream; pressurizing the medium-pressure initial stream to a high pressure level in the range of from greater than 45 to 300 barg to form a high-pressure initial stream; wherein a monomer stream comprising an alpha-olefin monomer is introduced into the medium-pressure initial stream at medium pressure level and / or into the high-pressure initial stream at high pressure level, and one or more comonomer streams comprising at least one alpha-olefin comonomer is / are introduced into the low-pressure initial stream at low pressure level, and / or into the medium-pressure initial stream at medium pressure level, and / or into the high-pressure initial stream at high pressure level; to form an alpha olefin feed stream. Alternatively, the medium pressure level may be left out, wherein a monomer stream comprising an alpha-olefin monomer is introduced into the high-pressure initial stream at high pressure level; and one or more comonomer streams comprising at least one alpha-olefin comonomer is / are introduced into the low-pressure initial stream at low pressure level, and / or into the high-pressure initial stream at high pressure level; to form said alpha olefin feed stream. The above processes enable solution polymerisation with reduced process complexity and increased process economics.

CIRCULAR ECONOMY FOR PLASTIC WASTE TO POLYETHYLENE AND CHEMICALS VIA REFINERY CRUDE UNIT. A continuous process is provided to convert plastic waste in recycling for the polymerization of polyethylene or normal alpha olefins. The process comprises selecting plastic waste containing polyethylene and / or polypropylene and then passing the plastic waste through a pyrolysis reactor to thermally crack at least a portion of the olefin waste and produce a pyrolyzed effluent. The pyrolyzed effluent is separated into excretion gas, a naphtha / diesel fraction, a heavy fraction, and charcoal. The naphtha / diesel fraction is passed to a crude unit in a refinery from which the direct-drive naphtha fraction (C5-C8) or the propane / butane fraction (C3-C4) is recovered. The direct-flow naphtha fraction, or the propane and butane (C3-C4) fraction, is passed to a steam cracker for the production of ethylene.Ethylene is converted in the normal alpha olefin and / or polyethylene synthesis unit. Also, a heavy fraction from the pyrolysis reactor can be combined with a heavy fraction of the normal alpha olefin stream recovered from the steam cracker. The combined heavy fraction and the heavy fraction of the normal alpha olefin stream can be passed to a wax hydrogenation zone to produce wax.

Provided are a resin composition having excellent electrical characteristics and flame retardancy, a prepreg, a metal-clad laminate, and a method for manufacturing the same. A resin composition containing a resin having at least an alpha-olefin structure represented by formula (1), an organic phosphorus compound, and a compound having at least one of an oxygen atom and a nitrogen atom. In formula (1), each R1 independently represents a hydrocarbon group having 1 to 10 carbon atoms or a haloalkyl group, p1 represents a real number of 0 to 4, and each represents a bonding position, a prepreg using the resin composition, a metal-clad laminate, and a method for producing a metal-clad laminate.

Process for making sustainable aviation fuel (SAF) from specific bio-ethylene oligomerization reactions producing a C4-C8 alpha-olefin and a by-product mixture of C10 olefins. This mixed decene stream is upgraded by further oligomerizing with at least one C4-C6 alpha-olefin to provide a C16− olefin stream, which is hydrogenated to C16− paraffins which is used to form a SAF. Employing bio-ethylene to produce the mixed decene stream, which is relatively low-value due in part to its non-selectivity, leverages that non-selectivity into a desirable sustainable aviation fuel product where the low selectivity is preferable. These and other embodiments and aspects are described herein.

Provided are: a curable resin having excellent adhesion to a metal foil and good electrical characteristics and heat resistance; a method for producing the curable resin; a curable resin composition containing the curable resin; a prepreg; the curable resin has at least an alpha-olefin structure represented by formula (1), and has an iodine value of 70 or more and a weight-average molecular weight Mw of 2500 or more. In formula (1), R1 each independently represents a C1-10 hydrocarbon group or haloalkyl group, p1 represents a real number of 0-4, and * each represents a bonding position.

The invention discloses a preparation method of a cycloolefin copolymer and the prepared cycloolefin copolymer. The preparation method comprises the following steps: carrying out a copolymerization reaction on an alpha olefin monomer and a cycloolefin monomer under the action of a phosphine-nitrogen ligand-containing mono-cycloolefin complex catalyst and a cocatalyst to obtain a cycloolefin copolymer, wherein the mono-cyclopentadienyl complex catalyst has a structure as shown in a formula (1); according to the invention, copolymerization of the alpha-olefin monomer and the cycloolefin monomer is catalyzed by the mono-cyclopentadienyl complex containing the phosphine-nitrogen ligand, so that the alpha-olefin monomer and cycloolefin copolymer with high cycloolefin content can be prepared.

The present application relates to the technical field of lubricating grease, and particularly relates to a steel wire rope lubricating grease and a preparation method thereof. The steel wire rope lubricating grease comprises the following components in percentage by weight: base oil 40-70%, petroleum-based wax or synthetic wax 5-25%, tackifier 5-30%, sepiolite 3-15%, antirust agent 0.5-5%, antioxidant 0.5-5%, and anti-wear agent 0.5-5%; the base oil is selected from one or more of naphthenic base oil, poly-alpha olefin, extracted oil and asphalt. The lubricating grease provided by the present application can improve the dropping point and high-temperature performance of the product, solve the problems of high-temperature oil dripping and low-temperature brittle cracking of the existing product, has a wide use temperature range, and has excellent adhesion, high-low temperature performance, rust resistance and anti-wear performance, and can meet the requirements of lubricating performance and service life of the steel wire rope under harsh conditions such as high temperature and low temperature.

The invention provides a composite photovoltaic adhesive film as well as a preparation method and application thereof. The composite photovoltaic adhesive film comprises a supporting layer and a bonding layer which are superposed, the supporting layer comprises graft copolymer resin obtained by carrying out graft-copolymerization reaction on first matrix resin, an acidic graft monomer and an olefin comonomer; the bonding layer comprises the following components in parts by weight: 80-100 parts of second matrix resin, 1-3 parts of a cross-linking agent, 0.3-1 part of a silane coupling agent and 5-10 parts of a tackifier; the first matrix resin and the second matrix resin are respectively and independently selected from one or more of ethylene-alpha olefin copolymer resin, ethylene-vinyl acetate copolymer resin and polyethylene resin. According to the composite photovoltaic adhesive film, the special supporting layer and the special bonding layer are designed and matched, and the obtained composite photovoltaic adhesive film can achieve good bonding and packaging effects at high temperature and high pressure.

The invention relates to hydrolysis-resistant loose tube filling paste for a deep-sea optical cable and a preparation method of the hydrolysis-resistant loose tube filling paste, and belongs to the technical field of optical communication materials. The filling paste is prepared from the following components in parts by weight: 7085 parts of modified base oil, 1015 parts of a modified gelling agent, 46 parts of a hydrolysis-resistant auxiliary agent, 11.5 parts of an antioxidant, 23 parts of a compatibility regulator and 0.20.3 part of a defoaming agent. Wherein the modified base oil is fluoroalkyl grafted modified poly-alpha olefin, and the modified gelling agent is fluorosilane modified organic bentonite. Through molecular structure modification, highly hydrophobic and oleophobic fluorinated groups are introduced into the base oil and the gelling agent, easily-hydrolyzed sites are closed fundamentally, the filling paste is endowed with excellent long-term hydrolysis-resistant stability and chemical inertness in deep-sea high-pressure, high-humidity and high-salt environments, paste layering, oil separation and performance degradation are effectively prevented, and the filling paste has good application prospects. And long-life reliable operation of the deep-sea optical cable is ensured.

The invention relates to the technical field of light-cured printing ink, in particular to a UV printing ink adhesion promoter for a packaging film and a preparation method of the UV printing ink adhesion promoter. On the basis of epoxidized metallocene poly-alpha-olefin, regular long-chain alkyl and terminal epoxy groups exist in poly-alpha-olefin molecules, the poly-alpha-olefin molecules and acrylic acid or acrylate monomers containing carboxyl and acryloyl are subjected to a ring-opening reaction to obtain the adhesion promoter free of chlorine elements, and the adhesion promoter can participate in a cross-linking reaction of a UV light-cured resin system; a coating formed after UV illumination curing film forming has good adhesive force to low-polarity BOPP and medium-polarity BOPET and has excellent water immersion resistance and flexibility, and corona or other surface treatment does not need to be carried out on a base material BOPP or BOPET in the coating process after an adhesive force accelerant is used.

An alpha olefin synthesis process comprising (i) subjecting a first normal alpha olefin to hydroformylation in the presence of carbon monoxide and hydrogen to form a first linear aldehyde, (ii) subjecting the first linear aldehyde to decarbalkenolation to form a linear internal olefin, (iii) subjecting the linear internal olefin to isomerization-hydroformylation in the presence of carbon monoxide and hydrogen to form a second linear aldehyde, and (iv) subjecting the second linear aldehyde to hydrogenation to form a linear alcohol followed by dehydration to form a second normal alpha olefin, or subjecting the second linear aldehyde to combined hydrogenation-dehydration in a single step to form a second normal alpha olefin. Using this process, for example, ethylene can be converted to 1-hexene, and 1-butene can be converted to 1-decene.

This application relates to the field of reactor technology, and in particular to a reactor for the production of ultra-high viscosity metallocene polyalphaolefins that is easy to clean. It includes a base, a temperature-controlled electric heating wire, a rotating wall scraping assembly, a liquid distribution pipeline, a Y-type upward-expanding discharge valve, a spiral discharge mechanism, and a spray device. Flexible scrapers and a self-cleaning layer reduce material adhesion, while the rotating spray head provides all-around automatic cleaning of the reactor interior. The combination of the Y-type upward-expanding discharge valve and the spiral discharge mechanism effectively prevents material retention. The heating wire structure of the temperature-controlled electric heating wire ensures temperature control, the liquid distribution pipeline ensures orderly delivery of materials and cleaning fluid, and the modular design enhances assembly convenience. This application significantly reduces the frequency of manual cleaning, improves the automation level and cleaning effect of the equipment, and protects the inner wall of the reactor from damage, making it suitable for high-viscosity material production scenarios.

The invention belongs to the technical field of hydraulic oil, and particularly relates to a high-viscosity antirust ash-free poly-alpha-olefin hydraulic oil composition as well as a preparation method and application thereof. The hydraulic oil composition is prepared from the following raw materials in percentage by mass: 0.2 percent to 0.4 percent of an anti-wear agent, 0.05 percent to 0.1 percent of an extreme pressure agent, 0.02 percent to 0.05 percent of a metal deactivator, 0.1 percent to 0.3 percent of an antioxidant, 0.05 percent to 0.1 percent of an anti-rust agent, 0.01 percent to 0.03 percent of a dispersing agent, 0.01 percent to 0.05 percent of an anti-foaming agent, 0.01 percent to 0.05 percent of a demulsifying agent and the balance of base oil. The poly-alpha-olefin hydraulic oil product disclosed by the invention has excellent lasting anti-rust property, oxidation stability and wear resistance, and meets the lubrication requirement of a high-end equipment hydraulic system under a high-temperature working condition.