54 results about "Polyene" patented technology

This invention discloses a demulsifier for polymer flooding crude oil produced fluids, its preparation method, and its application, belonging to the field of chemical additives for petrochemicals. The technical solution includes a main agent, an auxiliary agent, a penetrant, and water; the main agent is a polyene-polyamine block polyether, the auxiliary agent is a triethanolamine block polyether quaternary ammonium salt, and the penetrant is selected from at least one of methanol, ethanol, ethylene glycol, and diethylene glycol butyl ether; in the demulsifier, the ratio of the main agent to the auxiliary agent is 4-9:1, the amount of penetrant is 30% of the total amount of the main agent and auxiliary agent, and the amount of water is 70% of the total amount of the main agent and auxiliary agent. This invention, applied to demulsification of polymer flooding crude oil produced fluids, features high demulsification efficiency and rapid demulsification effect.

This invention discloses a EPDM rubber and its preparation method, comprising copolymerizing the EPDM rubber from a first structural unit provided by ethylene, a second structural unit provided by propylene, and a third structural unit provided by a polyene monomer. This invention achieves precise control of the molecular structure of the EPDM rubber by introducing a polyene monomer with a specific structure as the third monomer, and combining it with a restricted geometry catalyst or a vanadium-based catalyst, thereby improving the uniformity of the copolymer and the vulcanization efficiency. The resulting rubber exhibits a narrow molecular weight distribution, suitable Mooney viscosity, and good processing properties, making it suitable for high-performance rubber products. The preparation method is simple, environmentally friendly, and easy to industrialize.

The application belongs to the technical field of catalytic synthesis, and particularly relates to application of a Lewis acid-base pair in catalyzing polymerization of functionalizable monomers. Common polymerization methods have poor controllability for polymerization of monomers containing polyene groups, alkyne groups and conjugated diene groups, and the molecular weight of the obtained polymer is uncontrollable at low monomer conversion, and the molecular weight distribution is wide, and crosslinking occurs at high monomer conversion. The application utilizes a specific Lewis acid-base pair, and by adjusting the electronic effect and steric hindering effect of the Lewis acid and the Lewis base, active controllable polymerization of the functionalizable monomers can be catalyzed, and a polymer with a clear structure and containing functionalizable sites is obtained, the molecular weight is controllable, the molecular weight distribution is narrow, the end group structure is controllable, the position and density of the functionalizable sites are conveniently adjusted, an efficient platform is provided for post-modification preparation of functional high molecular materials, and functional high molecular materials are prepared by combining click reaction.

The invention discloses a bio-based electrophoretic paint cross-linking agent composition S1. The bio-based electrophoretic paint cross-linking agent composition S1 comprises the following components: a bio-based polyol component; an isocyanate component; the catalyst comprises an organic bismuth or zinc catalyst; the solvent comprises propylene glycol methyl ether acetate or bio-based propylene carbonate. The electrophoretic paint cross-linking agent composition S2 comprises the following components: a cyclic carbonate monomer; a polyene polyamine; a thiol-ene click chemical reagent; an end-capping reagent and an organic tin catalyst component. An electrophoretic paint composition is prepared from the bio-based electrophoretic paint cross-linking agent composition. The invention provides a polyisocyanate cross-linking agent taking castor oil and bio-based polycarbonate diol as raw materials and a carbamate cross-linking agent prepared from cyclic carbonate and polyene polyamine, and the polyisocyanate cross-linking agent and the carbamate cross-linking agent have the following advantages that the bio-based content is greater than or equal to 60%, and the consumption of petroleum resources is reduced; the curing temperature is not more than 140 DEG C; vOC emission is reduced by more than 30%; and the adhesion, salt fog resistance and other properties of the coating reach or exceed those of a traditional system.

The purpose of the present disclosure is to reduce the initial tack or the like of an uncured sheet. An uncured sheet according to the present disclosure is formed from a composition containing an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying the following condition (2a), and the initial adhesion of the uncured sheet at 25 DEG C as determined by a probe initial adhesion test is 2N or less. (2a) The content of the aromatic vinyl compound monomer unit is within the range of 60-80 mass%, and the total of the aromatic vinyl compound monomer unit, the aromatic polyene monomer unit and the olefin monomer unit is 100 mass%.

The present invention relates to a process for stereoselective polyene cyclization to produce tricyclic compounds of formula (I), wherein X is CH2or C=O, comprising reacting a compound of formula (II), wherein X is CH2or C=O and wherein the curved line indicates the E- or Z-configuration, in the presence of a catalytic amount of a Bronsted acid having an acidic sulfonamide moiety.(I)(II)

[Problem] To provide a polarizing plate, a polarizing plate, a polarizing plate with an optical layer, an image display panel, and an image display device capable of suppressing a change in hue of the polarizing plate in a high-temperature environment. [Solution] A polarizer (1) is formed from a polyvinyl alcohol-based resin film and contains potassium atoms and at least one type of atom selected from the group A below, and the total content of the at least one type of atom selected from the group A below as determined by elemental analysis is 0.10 mass% or more. The atom is bonded to the hydroxyl group of the polyvinyl alcohol, thereby suppressing a dehydration reaction and further suppressing polyenation. Group A: atoms belonging to alkali metals (except potassium atoms), atoms belonging to alkaline earth metals, aluminum atoms, and chromium atoms.

The present invention relates to a process for the preparation of polythiols comprising preparing a mercaptanization reaction medium, simultaneously carrying out a radical mercaptanization reaction of said at least one polyene and an acid-catalyzed mercaptanization reaction of said at least one polyene, and recovering a mixture comprising at least two polythiols. The present invention also relates to a mixture of polythiols obtained according to said process and to the use of said mixture of polythiols.

The invention provides a polypropylene material with high heat resistance and high dielectric constant, the polypropylene material is prepared by irradiation of a pretreated master batch and a polyalkenyl aromatic grafting monomer according to a mass ratio of (90-98): (2-10), and the pretreated master batch comprises polypropylene resin, a composite antioxidant and a beta crystal form nucleating agent. Through the synergistic effect of the beta crystal form nucleating agent optimized crystallization (heat resistance and radiation resistance improvement), the composite antioxidant protection (performance protection and stable processing) and the polyalkenyl aromatic monomer grafting (cross-linking and strong polarization formation), the problems that the dielectric loss is sharply increased in a traditional inorganic filler blending method and the compatibility is poor in a polar monomer graft copolymerization method are solved; and the processing performance is guaranteed through process controllability, and the blank of the high-temperature and high-dielectric scene polypropylene material is finally filled.

The present invention provides a composition containing an ethylene-α-olefin-nonconjugated polyene copolymer, a hydrosilyl group-containing compound, a platinum-based catalyst, and a zeolite, which has a high crosslinking rate. [Solution] A composition containing a specific ethylene-α-olefin-non-conjugated polyene copolymer (A), a specific hydrosilyl group-containing compound (Y), a platinum-based catalyst, and a zeolite.

The polymer blend may comprise a post consumer recycle (PCR) ethylene-based polymer; and a trimodal ethylene-based polymer, the trimodal ethylene-based polymer comprising a first polymer fraction, a second polymer fraction, and a third polymer fraction, wherein the first polymer fraction, the second polymer fraction, and the third polymer fraction each comprise the polymerization reaction product of an ethylene monomer and optionally a C3-C14 alpha-olefin comonomer, provided that at least one of the first polymer fraction, the second polymer fraction, and the third polymer fraction comprises the polymerization reaction product of an ethylene monomer, a polyene comonomer, and optionally a C3-C14 alpha-olefin comonomer.

The embodiment relates to a process for producing an ethylene-based polymer in a reactor system comprising a first reactor and a second reactor. The process involves ethylene, one or more (C3-C3) polymers. 14 Polymerizing an α-olefin monomer and at least one polyene in a first reactor in the presence of one multi-chain catalyst and at least one single-chain catalyst to produce a first reactor polyethylene product containing long-chain branching, wherein the multi-chain catalyst contains multiple polymerization sites, and the long-chain branching is produced by the cooperative bonding of two polymer chains of the multi-chain catalyst with the polyene during polymerization, and the first reactor polyethylene product contains ethylene and one or more (C3~C 14 The method comprises polymerizing an α-olefin monomer in a second reactor in the absence of an initial polyene feed and in the presence of at least one single-chain catalyst to produce a second reactor polyethylene product, wherein the ethylene polymer comprises the first and second reactor polyethylene products.

The invention belongs to the technical field of battery manufacturing, and relates to a carbon-coated current collector capable of inhibiting thermal deformation and a preparation method and application thereof.The carbon-coated current collector comprises a current collector base material and a carbon-coated layer arranged on the surface of at least one side of the current collector base material, and the carbon-coated layer at least contains expanded microspheres; and the expansion microsphere is composed of a polyolefin acid shell and internal organic gas. The expansion microspheres are added in the carbon-coated layer of the carbon-coated current collector, thermal stress is actively counteracted by utilizing the thermal expansion and cold contraction characteristics of the expansion microspheres, so that the thermal deformation phenomenon is inhibited, meanwhile, the safety and the performance stability are considered, and the industrial popularization requirements are met.

Provided is an adhesive sheet which has excellent reliability under a high-temperature and high-humidity environment and with which polyene formation in a polarizing film is unlikely to occur.　An adhesive sheet 1 is an optical adhesive sheet. The adhesive sheet 1 has a thickness of 150 µm or more, a saturated water content X1 of 2.0 mass% or less at a temperature of 23 °C and a relative humidity of 50%, and a moisture permeability Y1, in terms of a thickness of 50 µm, of 200 g / m2·24 h or more at a temperature of 40 °C and a relative humidity of 92%. In the adhesive sheet 1, it is preferable that a relationship between a saturated water content X2 and the saturated water content X1 at a temperature of 85 °C and a relative humidity of 85% satisfies 0.5≤X2-X1≤2.

The present application relates to the field of heavy oil exploitation, and discloses a viscosity reducer composition, a viscosity reducer, a viscosity reducer combination liquid and application thereof, the composition comprising a polyene polyamine modified styrene maleic anhydride copolymer, a polyethanolamine modified styrene maleic anhydride copolymer, a solvent and an inorganic additive.The viscosity reducer composition can effectively reduce the viscosity of heavy oil and super heavy oil and improve the flowability.

A polymer blend is disclosed that can include a post consumer recycle (PCR) ethylene-based polymer and a native ethylene-based polymer including the polymerization reaction product of an ethylene monomer, a C3-C14 alpha-olefin comonomer, and a polyene comonomer, where the native ethylene-based polymer includes a melt strength (MS) greater than 9 cN, wherein MS is the melt strength in cN (Rheotens device, 190 DEG C, 2.4 mm / s < 2 >, 120 mm from the die outlet to the wheel center, extrusion rate of 38.2 s <-1 >, capillary die length of 30 mm, diameter of 2 mm and entry angle of 180 DEG).

The application discloses a biosynthesis gene cluster of a polyene macrolide natural product mandimycin, and a natural product and application of the biosynthesis gene cluster, wherein the nucleotide sequence of the biosynthesis gene cluster is shown as SEQ ID NO. 1, and the compound structural formula of the natural product mandimycin and mandimycin B is shown as formula I and formula II. The natural product mandimycin can target fungal cell membrane phospholipid molecules, especially phosphatidylinositol, cause important ion efflux in fungal cells, and lead to fungal cell death. The natural product mandimycin and mandimycin B have strong in-vivo and in-vitro antibacterial activity and a broad antibacterial spectrum on various WHO-published multiple drug-resistant fungal key pathogens, including candida, aspergillus, cryptococcus, mucor and fusarium.

The application provides an oleic acid modified polyene polyamine compound, a preparation method and application thereof, and a chemical structural formula of the compound is shown in formula I: in the formula, n is a positive integer greater than or equal to 1 and less than or equal to 10. The compound can improve the process performance of a solid propellant and also can improve the mechanical property of the solid propellant.

The invention discloses a high-purity polyene fish oil extracting and distilling device, and relates to the technical field of distilling devices.The high-purity polyene fish oil extracting and distilling device comprises a distilling retort and a support for installing the distilling retort on the distilling retort, a motor is fixedly installed on the support, the output end of the motor rotationally penetrates through the outer wall of the support, and a rotating shaft is fixedly installed at the output end of the motor; the circumferential surface of the rotating shaft is in contact with the distillation retort, a fixed frame is fixedly mounted on the outer wall of the rotating shaft, the outer wall of the fixed frame is in contact with the distillation retort, and a distillation heater is mounted in the fixed frame; the high-purity polyene fish oil extracting and distilling device further comprises a turning mechanism mounted on the rotating shaft and an anti-sticking mechanism mounted on the rotating shaft, and during distillation and extraction, the rotating shaft drives the turning plate to turn over an extract, so that the extract is prevented from standing on an evaporation surface to form a liquid film boundary layer; the component separation rate in unit time is greatly improved, and the distillation time consumption is reduced.

This adhesive composition is characterized by comprising: a (co)polymer (A) having (a) a polymer block of a methylstyrene monomer; at least one olefin-based polymer (B) which contains (c) a (co)polymer block of at least one aliphatic monoolefin and / or at least one aliphatic polyene, or a partially or completely hydrogenated block thereof and in which the content ratio of the (c) block is greater than 87 mass% and at most 100 mass%; and at least one tackifier (C). The present invention can provide an adhesive composition from which an adhesive layer having excellent adhesiveness can be formed at both a high temperature (at least 100ºC, for example, 120ºC) and a normal temperature of about 25ºC.

To provide an adhesive sheet that offers excellent reliability in high-temperature and high-humidity environments and is less prone to polyene formation of the polarizing film. [Solution] The adhesive sheet 1 is an optical adhesive sheet. The adhesive sheet 1 has a thickness of 150 μm or more, a saturated water content X1 of 2.0 mass% or less at a temperature of 23°C and a relative humidity of 50%, and a moisture permeability Y1 of 200 g / m² (calculated for 50 μm) at a temperature of 40°C and a relative humidity of 92%. 2 • It is 24 hours or longer. It is preferable that the relationship between the saturated water content X2 and the saturated water content X1 at a temperature of 85°C and a relative humidity of 85% of the adhesive sheet 1 satisfies 0.5 ≤ X2 - X1 ≤ 2.

The invention relates to the technical field of photovoltaic packaging composite materials, in particular to an EPE adhesive film based on low-temperature and high-temperature dual curing, a preparation method of the EPE adhesive film and a photovoltaic module. The EPE adhesive film based on low-temperature and high-temperature dual curing comprises a first EVA layer, a POE layer and a second EVA layer which are arranged in sequence, the first EVA layer comprises maleic anhydride grafted EVA resin, first EVA resin, a cross-linking agent, a silane coupling agent and an antioxidant; the second EVA layer comprises second EVA resin, a cross-linking agent, a polyalkenyl compound, a silane coupling agent and an antioxidant; the POE layer comprises glycidyl methacrylate modified POE resin, sulfydryl modified POE resin, POE resin, a cross-linking agent, a silane coupling agent and an antioxidant. In the EPE adhesive film disclosed by the invention, the POE layer can be partially crosslinked at low temperature, and the EVA layer and the POE layer can be subjected to crosslinking reaction at high temperature, so that the long-term reliability of an assembly can be remarkably improved.

The invention belongs to the technical field of polysubstituted olefin synthesis methods, and particularly relates to a synthesis method of polysubstituted conjugated diene and conjugated triene, which is characterized in that under relatively mild conditions, simple transition metal salt is adopted as a catalyst, and polysubstituted conjugated diene and conjugated triene compounds are prepared from a simple raw material alkyl amide; the product obtained by the invention is brand new and is not reported; the two-step alkenylation reaction can be realized through a'one-pot method '; the synthesis method is simple to operate, mild in reaction condition, high in reaction yield, wide in application range and very good in economic value, the polysubstituted conjugated polyene compound is synthesized by adopting multiple C-H functionalization reactions in the synthesis method, the operation is simple and effective, the synthesis raw materials are economical and easy to obtain, and the synthesis method is suitable for industrial production. The method is suitable for high-selectivity preparation of polysubstituted olefins, has a wide application prospect, and is an effective supplement of the existing method in the aspect of preparation methods.

The present invention provides a compound for an oil-based drilling fluid viscosity reducer and an oil-based drilling fluid viscosity reducer. A preparation method for the compound for the oil-based drilling fluid viscosity reducer comprises: mixing a polyene polyamine, an alcohol amine, and humic acid for a reaction to obtain a first reaction intermediate; and reacting the first reaction intermediate with a fluorine-containing silane coupling agent to obtain the compound for the oil-based drilling fluid viscosity reducer, wherein the molar ratio of the humic acid to the polyene polyamine to the alcohol amine to the fluorine-containing silane coupling agent is 1:(0.5-0.75):(0.01-0.5):(0.5-5). The oil-based drilling fluid viscosity reducer comprises the compound for the oil-based drilling fluid viscosity reducer, as provided by the present invention, a fluorine-containing surfactant, and an oil phase solvent at a mass ratio of 100:(10-50):(20-80). The oil-based drilling fluid viscosity reducer provided by the present invention has excellent high-temperature resistance.

The present disclosure provides an insulating material capable of achieving both sufficiently high heat dissipation and sufficiently low dielectric loss tangent permittivity. Specifically, the composition contains (a) a specific olefin-aromatic vinyl compound-aromatic polyene copolymer and (b) boron nitride particles, and is characterized in that: the volume ratio of the component (a) to the component (b) is in the range of 98-15: 2-85; the value of the dielectric loss tangent of a cured body of the composition as determined by a split cylinder resonator method at a measurement frequency of 35-42 GHz is 2 * 10 <-3 > or less, and the thermal conductivity of the cured body of the composition as determined by a laser flash method at 23 DEG C is 0.6 [W / m * K] or more.

[Problem] To provide a polarizing plate, a polarizing plate, a polarizing plate with an optical layer, an image display panel, and an image display device capable of suppressing a change in hue of the polarizing plate in a high-temperature environment. [Solution] The polarizing plate (1) is formed from a polyvinyl alcohol-based resin film, contains lithium atoms, and has a lithium atom content of 0.005-0.100 mass% as determined by elemental analysis. The lithium atoms and the hydrogen atoms of the hydroxyl groups of the polyvinyl alcohol are subjected to ion exchange, thereby suppressing a dehydration reaction and further suppressing polyalkylene.

One aspect of the present invention relates to a sliding composition film or a method for producing a sliding composition, the sliding composition including an ethylene / α-olefin / nonconjugated polyene copolymer (A); a propylene-based random copolymer (B1) and a propylene homopolymer (B2), having a melt flow rate of 0.1 to 4.0 g / 10 min; high-density polyethylene (C1) having a density of 940 to 970 kg / m3 and a MFR of 0.1 g / 10 min or less; ultra-high molecular weight polyethylene (C2) having an intrinsic viscosity [η] of 10 to 40 dl / g (in decalin at 135° C.), an average particle size D50 of 22 to 50μm, and a density of less than 940 kg / m3; and a silicone compound (D) having a kinematic viscosity of 3,000 to 1,000,000 cSt (at 25° C.) in each predetermined content, in which the ethylene / α-olefin / nonconjugated polyene copolymer (A) is at least partially cross-linked with a phenolic resin-based cross-linking agent.

The present invention relates to a polyene compound and a composition comprising the polyene compound, a process for producing the polyene compound and a method of using of the polyene compound to prevent or control phytopathogenic microorganisms on plants.

Provided are a method for preparing a polarizing film, and a polarizing film and a polarizer obtained therefrom. The preparation method includes: subjecting a polyvinyl alcohol (PVA)-based film to swelling, dyeing, crosslinking, and stretching, where a solution used in at least one of the steps of swelling, dyeing, crosslinking or stretching includes an organic aromatic boric acid. In the process of preparing the polarizing film, the introduction of the organic aromatic boric acid can inhibit the polyene reaction of the optical film, thereby enhancing the stability of the polarizing film. Meanwhile, the incorporation of the aromatic group from the organic aromatic boric acid can improve the stability of iodine molecules within the polarizing film, and increase the water resistance and the ultraviolet blocking capability of the polarizing film.