20 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 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 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.

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 application provides a polyene macrolide natural product PAC-G5 or a pharmaceutically acceptable salt thereof, and the compound structural formula of the natural product PAC-G5 is as shown in the following formula, and the natural product PAC-G5 can target ergosterol in a fungal cell membrane, so as to cause death of the fungal cell. The natural product PAC-G5 has strong in-vitro antibacterial activity and a broad antibacterial spectrum on various WHO published multi-drug resistant fungal key pathogens including candida, aspergillus, cryptococcus and the like, and can be used for preparing an antifungal drug.

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.

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.

To provide an elastomer composition and a film thereof that are suitable as materials for soft and transparent products. [Solution] An elastomer composition comprising (A) 100 parts by mass of a copolymer elastomer of α-olefin and polyene, preferably a copolymer elastomer of α-olefin and non-conjugated diene, (B) 0.1 to 300 parts by mass of polyolefin, preferably polypropylene, and (C) 0.01 to 30 parts by mass of a photopolymerization initiator, preferably a hydrogen abstraction type photopolymerization initiator, and a film thereof. The heat resistance of the film can be increased by irradiation with active energy rays.

The invention relates to an improved process for isomerizing polyunsaturated non-aromatic compounds including acyclic conjugated polyenes and alicyclic conjugated polyenes. In particular it relates to an improved and safe process for forming a 11-E retinoid compounds in high yield by expending as few energy as possible and with avoiding at most possible side products or product mixtures. This is achieved by feeding at least one of retinoid compounds of formula 2 to 5, or at least one of retinoid compounds of formula 2 to 5 and retinoid compound of formula 1, an organic solvent and a photosensitizer into a reaction device and irradiating the thus obtained reaction mixture with visible monochromatic light, at least 90% of the power of said monochromatic light and at most 100% of said power being emitted in the range from 460 nm to 580 nm.

This invention relates to the field of wastewater treatment technology, specifically a method for treating high-salt organic wastewater containing polyenes and polyamines. This invention overcomes the problems of high toxicity of polyenes and polyamines, easy complexation with catalysts, and low biochemical efficiency under high-salt conditions in wastewater treatment. First, this invention utilizes copper-supported cross-linked chitosan to achieve specific complexation and sedimentation of macromolecules, significantly reducing toxicity. Then, it uses oxygen-rich vacancy titanium dioxide particle electrodes combined with ultrasound to efficiently break stubborn C-N bonds. Next, bimetallic catalytic ozone completely eliminates residual biotoxicity. Finally, iron-modified biochar provides a salt-resistant microenvironment and electron shuttle effect for salt-tolerant bacteria, achieving deep mineralization and denitrification of pollutants. This effectively solves the biochemical treatment problem under the dual stress of high salt and high toxicity, resulting in stable effluent quality.

To provide a novel copolymer that exhibits excellent low dielectric properties and high elastic modulus at room temperature in its uncured state. [Solution] An α-olefin-cyclic olefin-aromatic polyene copolymer in an uncured state, having a dielectric constant of less than 2.4 and a dielectric loss tangent of less than 0.0008 at a measurement frequency of 40 GHz, and a storage modulus of 1000 MPa or more measured at 25°C.

This invention relates to the field of industrial gas treatment, specifically to a method for capturing and recovering carbon dioxide from FCC flue gas. The method includes conveying FCC flue gas to an absorption tower for contact reaction with an absorbent liquid to obtain a rich liquid that absorbs carbon dioxide; the rich liquid is then conveyed to a regeneration tower for thermal regeneration to obtain a lean liquid; the lean liquid is then conveyed back to the absorption tower for recycling. The absorbent liquid comprises 10-40 wt% of a composite amine solution, 0.01-0.5 wt% of a zirconium-based catalyst, 2-6 wt% of a nickel salt, and water; the composite amine solution comprises polyene amine and an alkanolamine, with a volume ratio of polyene amine to alkanolamine of 1:0.1-0.4. The technical solution of this invention has high carbon dioxide capture efficiency, low energy consumption, and significantly improves the phenomena of amine degradation and equipment corrosion.

The present application relates to a kind of flocculants and its preparation method and application, the preparation raw material of the flocculants includes saturated fatty acid dimer, polyol amine and polyene polyamine.In the present application, the flocculants has good flocculation effect for oil-based drilling fluid, and has less influence on the rheological property of drilling fluid.

To provide a photocurable resin composition for a display device, wherein adjusting a refractive index more finely enables preparation of a resin cured product layer having a small refractive index difference compared to various light-transmitting members. Further, to provide a display device in which various materials can be selected as light-transmitting members, and decreases in visibility due to external light being reflected are suppressed. Provided is a photocurable resin composition for a display device, the photocurable resin composition including: a prepolymer which is a reactant of a polyene and a polythiol and has in its structure a carbon-carbon double bond and a mercapto group; and a photopolymerization initiator. Provided is a display device having laminated therein, sequentially, an image display member, a resin cured product layer, and a light-transmitting member, the resin cured product layer configured from a resin cured product including a reactant of a polyene and a polythiol.

This invention relates to a hyperbranched polyvinylidene fluoride (PVDF) resin based on polyene monomer copolymerization, its preparation method, and its applications. The method includes: polymerizing PVDF with a small amount of polyene monomers under conditions of at least one initiator, at least one chain transfer agent, and at least one emulsifier; wherein the polyene monomers are at least one organic compound containing two or more non-conjugated carbon-carbon double bonds. Compared with the prior art, the PVDF resin prepared by this invention has a hyperbranched configuration, as well as a high molecular weight and a wide molecular weight distribution, effectively improving the processing difficulties caused by high melt viscosity. It is particularly suitable for manufacturing the inner lining of marine dynamic flexible risers, and can meet the stringent requirements for long-term reliability in deep-sea oil and gas extraction, such as aging resistance, permeability resistance, and media resistance.

The application belongs to the technical field of new material industry of organic compounds, and particularly discloses a sulfonamide polyene compound and a preparation method and application thereof, the method comprises the following steps: sulfonamide, allyl carbonate, tetrakis(triphenylphosphine)palladium and solvent ethyl acetate are mixed, and then stirred at room temperature for 3-6 hours in an air atmosphere. After the reaction is completed, the sulfonamide polyene compound is obtained through post-treatment and purification. The allyl amination reaction of the allyl carbonate is realized by using the allyl amide and the allyl carbonate as raw materials under mild conditions, and the sulfonamide polyene skeleton is efficiently constructed. The method is simple to operate, and strict anhydrous and anaerobic conditions are not required. The product shows good antibacterial and antioxidant activity, and the synthesized compound can also be used as an important organic synthesis intermediate.