103 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 invention relates to the technical field of synthesis of ambrota ethers, and discloses a synthesis method of ambrota ethers, the reaction is mainly carried out through a synergistic way, and in the presence of fluorinated alcohol, the strong acidic site of an imino diphosphoryl imide ester catalyst promotes protonation of a distal double bond of (3E, 7E)-homofarnesyl alcohol to form a cationic intermediate. Meanwhile, the imino diphosphoryl imide ester catalyst promotes the (3E, 7E)-homofarnesyl alcohol to be combined in an all-trans conformation manner, and guides carbocations and olefin to be subjected to stereotactic addition, so that a polyene cyclization reaction with high diastereoselectivity and enantioselectivity is realized, and the ambrota ether is finally generated. The fluorinated alcohol stabilizes the cation intermediate through a hydrogen bond, so that the activity and selectivity of the reaction are further improved. The synthesis method of ambrota ether is low in cost and efficient.

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)

The application discloses a kind of polyene compounds and preparation method and application thereof, and belongs to the technical field of marine fungi active ingredient analysis.The application utilizes the polarity difference of polyene compound to extract, separate a series of polyene compounds with novel structure from marine fungi Aspergillus flavipes A series of polyene compounds with novel structure are extracted and separated from the fermentation culture of GE2-6, and through in-vitro anti-influenza and anti-HIV virus tests, it is shown that the polyene compounds provided by the application have good in-vitro anti-influenza or anti-HIV virus activity and low cytotoxicity, and have development prospect in the preparation of anti-influenza and anti-HIV virus drugs.

[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 near-infrared window of fluorescent heptamethine cyanine dyes greatly facilitates biological imaging because there is deep penetration of the light and negligible background fluorescence. But dye instability, aggregation, and poor pharmacokinetics are current drawbacks that limit performance and the scope of possible applications. All these limitations are simultaneously overcome with a new molecular design strategy that produces a charge balanced and sterically shielded fluorochrome. The key design feature is a meso-Aryl group that simultaneously projects two shielding arms directly over each face of a linear heptamethine polyene. Cell and mouse imaging experiments compared a shielded heptamethine cyanine dye (and several peptide and antibody bioconjugates) to benchmark heptamethine dyes and found that the shielded systems possess an unsurpassed combination of photophysical, physiochemical and biodistribution properties that greatly enhance bioimaging performance.

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.

To provide a novel olefin-aromatic vinyl compound-aromatic polyene copolymer and a method for producing the same, the copolymer being nonvolatile, having a low molecular weight, and enabling realization of a high crosslink density.SOLUTION: An olefin-aromatic vinyl compound-aromatic polyene copolymer has a number average molecular weight (Mn) of 500 or more and less than 12,000, contains an olefin monomer unit, an aromatic vinyl compound monomer unit, and an aromatic polyene monomer unit, and has aromatic vinyl groups derived from the aromatic polyene monomer unit, wherein the number of the aromatic vinyl groups is two or more per the number average molecular weight (Mn), and the number average molecular weight (Mn) per the aromatic vinyl group is 500 or less.SELECTED DRAWING: None

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.

This composition contains, as a total of 100 parts by mass, 15-70 parts by mass of an olefin-aromatic vinyl compound-aromatic polyene copolymer, and 85-30 parts by mass of a boron nitride powder satisfying all of the following (A)-(C). (A) The average particle size of the boron nitride powder is 3-100 μm, inclusive. (B) The crushing strength is 6-20 MPa, inclusive. (C) The orientation index of the boron nitride powder is 5-20, inclusive.

To provide a resin composition having a low dielectric loss tangent and excellent fluidity in the resin composition.SOLUTION: A resin composition according to the present invention contains an olefin-aromatic vinyl compound-aromatic polyene copolymer and a surface-treated silica powder, the surface-treated silica powder satisfying a (D90-D10) / D50 of 0.8-4.5, where D10 is the particle size at which the cumulative value from the small particle size side is 10%, D50 is the particle size at which the cumulative value is 50%, and D90 is the particle size at which the cumulative value is 90%, in the volume frequency particle size distribution of the powder as measured by a laser diffraction scattering method, and the moisture content generated from above 550°C and up to 900°C as measured by the Karl Fischer method is 500 ppm or less.SELECTED DRAWING: None

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 invention relates to the technical field of deodorization, and particularly discloses an N-containing compound peculiar smell removing liquid. The N-containing compound peculiar smell removing liquid is prepared from the following raw materials in parts by weight: 0.5 to 5 parts of polyene polyamine, 1 to 10 parts of cyclodextrin, 0.1 to 3 parts of weak acid, 0.1 to 2 parts of a nonionic surfactant, 0.01 to 0.5 part of a metal ion chelating agent, 0.01 to 0.5 part of plant essential oil and 80 to 95 parts of deionized water, the preparation method comprises the following steps: reducing a cyano group into a primary amino group by using ethylenediamine and acrylonitrile, decolorizing by using activated carbon, distilling and purifying to obtain polyene polyamine, dissolving a polyene polyamine intermediate, cyclodextrin, weak acid, a nonionic surfactant and a chelating agent in water at controlled temperature to form a base solution, finally adding a plant essential oil mixture and a preservative, and cooling to obtain a finished product. The composition / product provided by the invention can be used for treating the environment polluted by the peculiar smell of the nitrogen-containing compound, and has the advantages of high-efficiency broad-spectrum deodorization and good environmental compatibility.

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.

The disclosure provides a polyene. The polyene comprises two sugar moieties and / or is modified in an exocyclic carboxylic acid position, or is a pharmaceutically acceptable salt, solvate, tautomeric form or polymorphic form thereof. In some embodiments, the polyene is a compound of formula I. The disclosure extends to pharmaceutical and agrochemical compositions, preservatives and foodstuffs comprising the polyene. The disclosure also extends to the polyene or pharmaceutical composition for use as a medicament, for use in treating, preventing or ameliorating an infection or a prion disease and methods of treating a disease in a plant or a mushroom using the polyene. The disclosure further provides a method of producing a polyene comprising a sugar moiety and / or a modification at an exocyclic carboxylic acid thereon. Finally, the disclosure also extends to a recombinant organism or cell expressing a glycosyltransferase enzyme or an amidotransferase enzyme.

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 invention provides an antimycotic polyene-alginate oligomer conjugate comprising an antimycotic polyene connected covalently to at least one alginate oligomer, wherein one or other terminal uronic acid residues of each alginate oligomer in the conjugate is connected to the antimycotic polyene via a direct covalent bond or a covalent molecular linker, or a pharmaceutically acceptable salt, solvate, hydrate, diastereoisomer, tautomer, enantiomer, or active metabolite thereof. Also provided are methods for the preparation of said conjugate, pharmaceutical compositions comprising said conjugate and the use thereof in a method for the treatment or prevention of a fungal infection in a subject with, suspected to have, or at risk of, a fungal infection.

The application belongs to the technical field of CO2 adsorption materials, and discloses an amine modified mesoporous activated carbon for CO2 adsorption with high adsorption capacity and excellent cycle stability and a preparation method thereof. The preparation method of the amine modified mesoporous activated carbon for CO2 adsorption comprises the following steps: (1) kneading and forming bamboo charcoal powder, a binder and a dispersing agent to obtain a green body; (2) performing carbonization treatment on the green body to obtain carbonized material; (3) performing one-stage activation treatment on the carbonized material to obtain a precursor; (4) performing two-stage activation treatment on the precursor to obtain mesoporous activated carbon; (5) performing amine modification treatment on the mesoporous activated carbon by using a polyene polyamine compound and a crosslinking agent to obtain the amine modified mesoporous activated carbon; wherein the one-stage activation treatment and the two-stage activation treatment are continuous water vapor heat activation treatments, the one-stage activation treatment temperature is higher than the two-stage activation treatment temperature, and the water vapor consumption of the one-stage activation treatment is less than that of the two-stage activation treatment.

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.

An α-olefin-cyclic olefin-aromatic vinyl compound-aromatic polyene copolymer, the copolymer in an uncured state having: a dielectric constant of less than 2.5 and a dielectric loss tangent of less than 0.0007 at a measurement frequency of 40 GHz; and a storage modulus of less than 1,000 MPa as measured at 25°C.