164 results about "Alpha-olefin" patented technology

The invention relates to the technical field of heat-conducting interface materials, and particularly discloses high-heat-conductivity organic silicon gel and a preparation method thereof. The high-thermal-conductivity organic silicon gel is prepared from the following components in parts by weight: 100 parts of insulating and thermal-conducting filler, 0.1 to 0.3 part of poly-alpha-olefin, 0.3 to 5 parts of vinyl silicone oil, 0.03 to 1 part of hydrogen-containing silicone oil, 0.01 to 0.3 part of alkynol modified silicone oil, 0.01 to 0.5 part of catalyst and 0 to 2 parts of additive, the viscosity of the poly-alpha olefin at 100 DEG C is 1-40 mm < 2 > / s, and the viscosity index is 80-175. According to the high-thermal-conductivity organic silicon gel provided by the invention, by adopting a mode of adding a small amount of poly-alpha-olefin, the problem that the insulating thermal-conductivity filler is high in filling amount and easy to agglomerate is solved, and the obtained organic silicon gel has a high thermal conductivity coefficient of 5-8W / m.K and breakdown strength of greater than 18kV / mm.

The invention relates to a polymer, a color master batch composition and a corresponding polyolefin product. By designing and synthesizing an alternating copolymer of maleic anhydride and a vinyl monomer, a polar succinic anhydride chain segment and a non-polar long-carbon alkyl chain segment are alternately formed on a main chain of the alternating copolymer, so that the steric hindrance effect of the polymer and the dispersion and coating effects on the pigment are further improved. The alternating copolymer of maleic anhydride and a vinyl monomer and low-molecular-weight polyethylene wax are used as dispersing agents to be applied to the color master batch composition, the dispersing performance and the anti-aging effect on pigments can be improved, and finally prepared polyolefin products are lower in color difference, more stable in coloring performance and better in ultraviolet aging resistance. Meanwhile, a light component byproduct alpha olefin dimer generated in the alpha olefin coordination polymerization process is also utilized, the application field of the low-molecular-weight poly alpha olefin is expanded, and the economic value of the low-molecular-weight poly alpha olefin is 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.

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.

Virucidal compositions including at least one acid and an alpha olefin sulfonate anionic surfactant are provided. In particular, virucidal efficacy against Murine Norovirus is provided at improved efficacy rates beyond comparative anionic surfactants. Methods of using a virucidal composition are also provided.

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.

Hair cleansing composition The present invention relates to a hair cleansing composition comprising: a) at least one anionic surfactant; b) at least one alpha-hydroxy acid and at least one beta-hydroxy acid; c) at least one piroctone compound; and d) at least one alpha olefin sulfonate. The present invention also relates to a hair cleansing process comprising applying the composition according to the present invention to the hair and then rinsing the hair with water after an optional exposure period. Figure for abstract: none

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 invention belongs to the technical field of lubricating oil, and particularly relates to comb-type copolymer ionic liquid as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a poly-alpha olefin-maleic anhydride comb copolymer, diethylenetriamine and an organic solvent, and carrying out first reaction to obtain an intermediate; and mixing the intermediate with acidic phosphate, and carrying out a second reaction to obtain the comb-type copolymer ionic liquid. On the basis of an existing common phosphate ammonium salt structure, the novel comb-type polymer ionic liquid is prepared by improving a cation structure and introducing a comb-type high-molecular copolymer, and the comb-type polymer ionic liquid has good solubility in gear oil and can play a role in inhibiting micro pitting corrosion of a friction surface. And meanwhile, the influence of introduction of nano-particles on the cleanliness and oxidation resistance of the oil product and the damage of introduction of additives of other structure types on the whole system of the oil product are avoided.

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 multilayer film comprising a first layer (A), a third layer (C), and a second layer (B) interposed between the first layer (A) and the third layer, each layer (A, B, C) comprises at least one propylene polymer chosen from the group consisting of propylene homopolymers, heterophasic polymers, propylene copolymers with at least one comonomer chosen from ethylene and a linear or branched C4-C12 alpha olefin, and mixtures thereof; - and in the second layer (B) the propylene polymer has a melt mass- flow rate (MFR) not exceeding 5 g / 10 min, where the melt mass-flow rate is determined according to the ISO 1133 standard.

The disclosure provides transition metal-based metallocene complexes, catalyst compositions including such complexes, and processes for preparing poly-alpha olefins (PAO) using such catalyst compositions.