270 results about "Polyene" patented technology

A composition comprises: a resin component including an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying all the following conditions (1) to (4): (1) a number average molecular weight of the copolymer is 500 or more and 100000 or less; (2) the aromatic vinyl compound monomer is an aromatic vinyl compound having 8 or more and 20 or less carbon atoms, and a content of a unit of the aromatic vinyl compound monomer is 0 mass % or more and 70 mass % or less; (3) the aromatic polyene is one or more selected from polyenes having 5 or more and 20 or less carbon atoms and having a plurality of vinyl groups and / or vinylene groups in the molecule, and a content of the vinyl groups and / or the vinylene groups derived from the unit of the aromatic polyene is 1.5 pieces or more and less than 20 pieces per number average molecular weight; and (4) the olefin is one or more selected from olefins having 2 or more and 20 or less carbon atoms, and a total of units of the olefin monomer, the aromatic vinyl compound monomer, and the aromatic polyene monomer is 100 mass %; and a surface-treated silica. The volume ratio between the resin component and the silica is in the range of 98 to 15:2 to 85. A cured product of the composition has a value of the dielectric tangent obtained by resonator method at a measurement frequency of 10 GHz and / or a measurement frequency range of 25 GHz to 40 GHz of 1.2×10−3 or less and a storage elastic modulus at 250° C. in the range of 10 MPa or more and 10 GPa or less.

The invention provides an ash-free antirust agent and a preparation method thereof. The preparation method comprises the following steps: in a non-polar solvent, mixing dinonyl naphthalene sulfonic acid and dodecenylsuccinic acid to obtain a mixed acid A; the preparation method comprises the following steps: mixing polyethylene polyamine and mixed acid A according to a molar ratio of (0.5-2.0): 1, and adding deionized water and methanol to react until the pH value of the solution is neutral; and adding methyl methacrylate and base oil into the reacted system, heating and distilling, and then carrying out reduced pressure distillation until no obvious distillate is generated, thereby obtaining the ash-free antirust agent. The invention also provides the ash-free antirust agent prepared by the method. The ashless antirust agent integrates the advantages of the dinonyl naphthalene sulfonic acid group and the dodecenyl succinic acid group on the molecular level, the antirust property is better, and the ashless antirust agent and the anti-wear reagent at extreme pressure have a very good synergistic effect.

Provided is the following dust cover: the dust cover is suppressed from warping, and even when an iodine-based polarizer is used, the dust cover can suppress the polyene formation of the polarizer. The dust cover is a dust cover including: a first support plate; a polarizing plate including an iodine-based polarizer; and a second support plate, at least one of the first support plate or the second support plate having a moisture permeability of 37 g / (m2·24 hours) or more, at least one of the first support plate or the second support plate having a thickness of 200 μm or more. A distance between a center line LP of the iodine-based polarizer in a thickness direction thereof and a center line LD of the dust cover in a thickness direction thereof is 20 μm or less.

The present invention provides an ashless rust inhibitor and a preparation method therefor. The preparation method comprises the following steps: in a non-polar solvent, mixing dinonylnaphthalenesulfonic acid and dodecenylsuccinic acid to obtain mixed acid A; mixing polyene polyamine and the mixed acid A according to a molar ratio of (0.5-2.0):1, and adding deionized water and methanol for reaction until the pH value of the solution is neutral; and adding methylmethacrylate and base oil into the reacted system, carrying out heating distillation, and then carrying out reduced pressure distillation until no obvious distillate is generated, so as to obtain the ashless rust inhibitor. The present invention further provides an ashless rust inhibitor prepared by the method. The ashless rust inhibitor of the present invention integrates the advantages of a dinonylnaphthalenesulfonic acid group and a dodecenylsuccinic acid group at the molecular level, and has a better rust inhibition effect; in addition, the ashless rust inhibitor has a good synergistic effect with an extreme pressure antiwear agent.

A multilayer structure includes at least one insulating layer(s), at least one resin layer(s), and at least one copper foil(s) each having a smooth surface and a roughened surface, wherein the insulating layer contains an olefin-aromatic vinyl compound-aromatic polyene copolymer and a surface modifier, wherein the resin layer contains one or more selected from the group consisting of polyimide, liquid crystal polymer, polyphenylene ether, polyfunctional aromatic vinyl resin, epoxy resin, and the same composition as in the insulating layer, wherein at least one surface of the respective insulating layer(s) is bonded to a smooth surface of the copper foil, and wherein, for each respective resin layer: at least one surface of the resin layer is bonded to the roughened surface, and the resin layer is not bonded to the smooth surface; or both surfaces of the resin layer are not bonded to the copper foil.

To obtain a copolymer which has a high crosslinking rate and excellent productivity and can form a molded product with thermal aging resistance, small compression set at high and low temperatures, and improved low-temperature characteristics (low-temperature elastic recovery characteristics and Gehman torsion characteristics), a composition containing the copolymer, and the like.SOLUTION: An ethylene / α-olefin / nonconjugated polyene copolymer (A) has a structural unit derived from ethylene [A1], a structural unit derived from a C4-20 α-olefin [A2], and a structural unit derived from a nonconjugated polyene [A3] having two or more partial structures selected from the group consisting of the following general formulae (I) and (II) in total in one molecule and satisfies specific requirements. The structural unit derived from the [A2] contains a structural unit derived from 1-butene, and the structural unit derived from the [A3] contains a structural unit derived from 5-vinyl-2-norbornene.SELECTED DRAWING: None

The present disclosure provides: a method for obtaining a cured body containing an epoxy compound and a resin having an aromatic vinyl group as a functional group; an epoxy resin-based composition and a cured body thereof, having improved low dielectric performance; and an electrically insulating material and the like. The present disclosure provides: a composition that contains an epoxy compound, a resin having an aromatic vinyl group as a functional group, and an active vinyl compound; a cured body of the composition; and an electrically insulating material. The resin having an aromatic vinyl group as a functional group is preferably an olefin-aromatic vinyl compound-aromatic polyene copolymer. The active vinyl compound is preferably one or more compounds selected from the group consisting of a maleimide compound and a cyanate compound.

An ultrahigh temperature, low scorch method of rapidly making a crosslinkable compound composition comprising a homogeneous mixture of a thermoplastic polyolefin, antioxidant, and curative additives comprising one or more organic peroxides and one or more multialkenyl crosslinking coagents. The method avoids soaking towers and lengthy soaking times, and yet makes a fully crosslinkable, homogeneous compound composition with minimal or no premature crosslinking of the thermoplastic polyolefin(s).

Organometallic precursor compositions containing a polyene ligand, such as a diene ligand, are described. Corresponding films are also described and show promising solubility behavior. A synthesis technique is described for forming a polyene-containing organotin trialkoxide compound. The incorporation of polymerization inhibitors and / or blends of organotin compounds with different ligands are described as a way to design radiation sensitive films to have target solubility properties.

The invention discloses a dynamic polyene amine compound as well as a preparation method and application thereof. The structural formula of the dynamic polyene amine compound is as shown in formula (I). The dynamic polyenamine compound is obtained by carrying out polymerization reaction on a binary amide activated alkynyl compound and a diamine compound in an organic solvent. The preparation method has the advantages of mild reaction conditions, no need of catalyst, simple and easily available raw materials, high atom utilization rate, high polymer yield, high molecular weight and excellent stereoselectivity. The dynamic polyene amine compound prepared by the invention has the properties of good processability, film-forming property, high thermal stability, non-traditional luminescence and the like, and the dynamic enamine bond contained in the dynamic polyene amine compound prepared by the invention can realize accurate degradation and structural replacement of a polymer under mild conditions.

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.

Disclosed are a binder for forming a solid electrolyte film, which includes a copolymer including structural units derived from a non-polar aromatic vinyl-based first monomer, an aliphatic conjugated diene-based second monomer, and a conjugated polyene-based third monomer, a film-type structure for a secondary battery including the same, and a secondary battery including the film-type structure.

The present invention addresses the problem of providing a novel compound having an effect to more effectively enhance the antifungal activity of an antifungal drug compared with known pharmaceutical compounds. One aspect of the present invention relates to a compound represented by formula (I) [wherein R1, R2, R3, R4, R5, and R6 have meanings as set forth in the description and the claims], a salt of the compound, or a solvate of the compound or the salt. Another aspect of the present invention relates to: a method for producing a compound represented by formula (I), a salt of the compound, or a solvate of the compound or the salt; and an activity enhancer for at least one antifungal drug selected from the group consisting of a polyene macrolide-based drug, an azole-based drug, a candin-based drug, and a fluoropyrimidine-based drug, the activity enhancer containing, as an active ingredient, the compound, a pharmaceutically acceptable salt of the compound, or a pharmaceutically acceptable solvate of the compound or the pharmaceutically acceptable salt.

A multilayer structure, characterized in that it comprises one or more insulating layers, one or more resin layers, and one or more copper foils having a smooth surface and a roughened surface, wherein the insulating layer comprises an olefin-aromatic vinyl compound-aromatic polyene copolymer and a surface modifier, the resin layer comprises one or more selected from polyimide (PI), liquid crystal polymer (LCP), polyphenylene ether (PPE), multifunctional aromatic vinyl resin (ODV), epoxy resin, and the same composition as the insulating layer, at least one surface of each of the insulating layers is bonded to the smooth surface of the copper foil, and for each of the resin layers, at least one surface of the resin layer is bonded to the roughened surface of the copper foil and the resin layer is not bonded to the smooth surface of the copper foil, or both surfaces of the resin layer are not bonded to the copper foil.

The invention relates to a copolymer and a laminate containing the same. Provided are: a composition with which it is possible to obtain a cured product having excellent low dielectric properties and high adhesion to a metal foil; and a laminate containing the composition. The laminate contains a resin layer and a metal foil, and the resin layer contains an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying conditions (1)-(4).

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 present invention relates to the technical field of polyethylene films, and discloses a preparation method of a high-strength polyethylene blown film. Metallocene polyethylene, maleic anhydride and octavinyl-POSS are used to initiate polymerization to obtain polyethylene grafted polyene POSS, which is subjected to epoxidation treatment to obtain polyethylene grafted epoxy POSS. Its structure consists of an inorganic cage-like nucleus formed by silicon oxygen, which has a rigid structure and steric hindrance effect, hinders the movement of polyethylene chain segments, can form nano-inorganic microphase regions, avoids a large amount of agglomeration of inorganic particles, and enables them to be evenly dispersed in the polyethylene matrix; PBAT itself has high toughness, belongs to polar molecules, has good moisture permeability, presents a two-phase separation state in the co-blown film, improves the water resistance of the polyethylene matrix, can selectively slow down the gas exchange between O2 and the outside world, avoids the condensation phenomenon in fruit and vegetable packaging, and has good biodegradability.

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)

To provide an ethylene-based copolymer composition that is suitable for automotive aqueous hose applications and is capable of yielding molded products having a superior balance of insulation performance, coolant resistance, and thermal aging resistance in comparison with traditional EPDM-based rubber compositions for automotive aqueous hoses, and also to provide a hose product having a superior balance of insulation performance, coolant resistance, and thermal aging resistance.SOLUTION: An ethylene-based copolymer composition comprises: an ethylene-α-olefin-non-conjugated polyene copolymer (A) comprising structural units derived from ethylene (a1), structural units derived from an α-olefin (a2) having 3 to 20 carbon atoms, and structural units derived from a non-conjugated polyene (a3) having two or more partial structures in one molecule selected from the group consisting of the following general formulas (I) and (II), where the structural units derived from the non-conjugated polyene (a3) include structural units derived from 5-vinyl-2-norbornene; and a carbodiimide group-containing compound (B).SELECTED DRAWING: None

The preparation method comprises the following steps that under the condition of antioxidant protection, polyenoic acid containing at least one allyl hydrogen and maleic anhydride are mixed and subjected to an Alder-Ene reaction for 5-12 h at the temperature of 160-240 DEG C, modified polyenoic acid is prepared, and the molar ratio of olefin functional groups in the polyenoic acid to maleic anhydride is 1.5: 1.0-2.0: 1.0; the modified polybasic carboxylic acid and polyethylene polyamine are subjected to a dehydration polycondensation reaction at the temperature of 160-190 DEG C, the molar ratio of terminal amino of the polyethylene polyamine to carboxyl of the modified polybasic carboxylic acid is 1.05: 1.0-1.40: 1.0, and modified polyamide is prepared; the modified polyamide is dissolved in water at the temperature of 50-100 DEG C to be diluted, the PH value is adjusted to be 5.0-9.0, and the halogen-free polyamide polyamine papermaking cylinder adhesive is prepared. Epoxy chloropropane is not used, the poison problem of chloropropanol and organic halogen is avoided, modified polycarboxylic acid serves as a cross-linking agent, and the adhesive has good binding power and has flexibility and film forming water resistance.

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.

To provide a resin composition that exhibits excellent biodegradability, restricts the by-product content to a degree that prevents particle coagulation and blocking in particulate form, and enables stable production of a gas barrier material.SOLUTION: A modified ethylene-vinyl alcoholic resin composition comprises: a modified ethylene-vinyl alcohol resin having a primary hydroxyl group structural unit in its side chain; and a conjugated polyene. The content of an ethylene structural unit in the modified ethylene-vinyl alcoholic resin composition is 2.5-16.5 mol. The content of the conjugated polyene is 0.1-500 ppm relative to the modified ethylene-vinyl alcoholic resin composition. The content of dihydroxyalkyl olefin in the modified ethylene-vinyl alcoholic resin composition is less than 90 ppm.SELECTED DRAWING: None

[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.