61 results about "Vinylidene group" patented technology

The invention relates to a preparation method of a high-lithium-affinity vinylene covalent organic framework material serving as a lithium metal negative electrode interface protective layer. The method comprises the following steps: firstly, by utilizing a simple hydrothermal synthesis method, taking 1, 3, 5-trimethyl-2, 4, 6-triazine (TMT) and 2, 2-bipyridine-5, 5-diformaldehyde (BPY) as monomers, and carrying out Aldol condensation reaction to synthesize a covalent organic framework material connected by a vinylene bond, which is named as viCOF-bpy; the electrochemical performance of the material is verified by modifying the surface of a copper pole piece with the viCOF-bpy material and then assembling a battery. The lithium-loving group on the material skeleton can promote the migration of lithium ions, and the vinylidene has very strong chemical stability, so that the electrochemical performance of the lithium metal battery can be effectively improved.

The invention relates to the technical field of epoxy resin composite materials, and particularly discloses an epoxy resin composition, a preparation method and an epoxy glass cloth laminated board. The epoxy resin composition is prepared from the following components in parts by weight: 100 parts of epoxy resin, 10 to 20 parts of hydroxyl-containing organic silicon, 3 to 8 parts of maleic anhydride, 0.5 to 2 parts of vinylidene compound, 5 to 15 parts of 4, 4 '-bismaleimide diphenylmethane and 30 to 60 parts of curing agent. The hydroxyl-containing organic silicon and the 4, 4 '-bismaleimide diphenylmethane are crosslinked with the epoxy resin, so that the heat resistance of the epoxy resin is improved, and the toughening effect on the epoxy resin is achieved.

The invention discloses a vinylidene bridged covalent organic framework material based on 2, 7-diaza pyrene and a preparation method thereof.The 2, 7-diaza pyrene is used as a core monomer, under the catalysis of benzoic acid and benzoic anhydride, methyl is activated to form an enamine intermediate, aryl aldehyde is attacked to form unsubstituted carbon-carbon double bonds, and under the heating condition, the 2, 7-diaza pyrene is synthesized into the vinylidene bridged covalent organic framework material based on 2, 7-diaza pyrene. And two vinylidene bridged COFs materials with high crystallinity are successfully synthesized. The COFs material disclosed by the invention has a high specific surface area, a uniform through rhombic pore channel structure and excellent chemical stability, and has an important application prospect in the field of photoelectrocatalysis.

Intragastric volume-occupying devices and methods for treating obesity are provided. The devices, which are inflated by carbon dioxide, include an aluminum or silicon oxide barrier layer providing carbon dioxide retention and an alkylene vinyl alcohol polymer layer providing structural integrity in vivo.

The invention belongs to the technical field of organic / polymer neuromorphic information storage, and provides an ion covalent organic framework memristor device with vinylidene connection and preparation and application thereof. Specifically, two construction units (triphenylbenzene and trinuclear copper) with different activities grow a vinyl-bridged ion covalent organic framework film on the surface of ITO through a green hydrothermal method, and the vinyl-bridged ion covalent organic framework film is used as a resistive random access memory. According to the method, a large-area and uniform-texture two-dimensional COF film is successfully grown on the ITO substrate through a green substrate assisted hydrothermal method, and the subsequent film forming processing problem caused by the intrinsic characteristics of vinyl COF is effectively solved; the adopted hydrothermal method opens up a new path for large-scale low-carbon production of the high-crystallinity two-dimensional vinyl ion covalent organic framework material, and has profound significance and value.

The invention provides a fuel composition comprising: (a) a gasoline base fuel suitable for use in a spark-ignition internal combustion engine; and (b) a polybutylene polymer wherein the polybutylene polymer has a number average molecular weight in the range of 200 g / mol to 10,000 g / mol, and wherein greater than 30% of the polymer molecules in the polybutylene polymer have terminal vinylidene groups; and (c) a tetraalkylethane compound of formula (I): # imgabs0 # wherein Ar represents an aryl group and each X is independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted linear or branched C1-C12 alkyl group, (CH2) nOH or (CH2) nNH2 wherein n is in the range of 1 to 9, with the proviso that at least one of the X groups in each CX3 group is a hydrogen atom. The fuel composition of the present invention provides improved engine power and reduced combustion duration.

The present invention belongs to the field of medicine and relates to the use of benzothiazinone vinylidene indene compounds in the preparation of osteoclast differentiation inhibitors. The present invention uses tartrate-resistant acid phosphatase (TRAP) staining and reverse transcription real-time fluorescence quantitative polymerase chain reaction (RT-qPCR) technology to confirm for the first time that this series of compounds can significantly inhibit RANKL-induced osteoclast differentiation and the formation of multinucleated osteoclasts, and are non-cytotoxic at concentrations of 5μM and below. Based on these findings, the benzothiazinone vinylidene indene compounds provided by the present invention can be used as candidate drug molecules for novel osteoclast differentiation inhibitors, for the prevention and / or treatment of bone metabolic diseases caused by excessive activation of osteoclasts, such as osteoporosis, periprosthetic bone dissolution, tumor metastasis bone destruction, and rheumatoid arthritis.

The application discloses a kind of vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediates and catalyst prepared from it, intermediate and the preparation method and application of catalyst. 2,4,6-tri-tert-butyl aniline is used as raw material, in the presence of catalyst, under the condition of 120 DEG C, the vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediate with structure as shown in formula (I) is obtained.Compared with prior art, the application uses commercially available, low-cost and storage condition loose 2,4,6-tri-tert-butyl aniline instead of high-cost, storage harsh 2,4-di-tert-butyl aniline as reaction raw material, which effectively reduces the raw material procurement threshold and comprehensive production cost, and simplifies the storage condition.The raw material of the method is easy to obtain, low in cost, easy to operate, high in yield, and suitable for industrial scale-up production.

The present invention is directed at multibranched acid terminated oligomers of itaconic acid. Such multibranched acid terminated oligomers also contain six or more vinylidine groups providing unsaturations that can then be relied upon for subsequent Michael nucleophilic addition type reactions. The subject oligomers have particular use for treatment of damaged hair or skin.

There is provided a fuel composition comprising: (a) a gasoline base fuel suitable for use in a spark-ignition internal combustion engine; and (b) a polybutylene polymer; wherein the polybutene polymer has a molecular weight in the range of 200 g / mol to 10,000 g / mol wherein greater than 30% of the polymer molecules in the polybutene polymer have terminal vinylidene groups, and wherein the polybutene polymer is present in a content of 500 ppm to 5000 ppm, based on the weight of the fuel composition. The fuel composition of the present invention provides improved engine power and reduced combustion duration.

A method of treating post consumer and / or post industrial use waste of an impact modified polymer containing a monovinylidene aromatic monomer is disclosed. The method can include forming a solution comprising a solvent and at least one post-consumer and / or post-industrial use waste comprising an impact-modifying polymer (wherein the polymer is based on a monovinylidene aromatic monomer) and an impact modifier having a particular particle size and morphology; separating and removing undissolved and / or undispersed materials from the solution; and separating and removing the solvent from the dissolved and / or dispersed material to recover the impact modified polymer; wherein the solvent dissolves and / or disperses the impact modifying polymer, and wherein the recovered impact modifying polymer maintains the impact modifier particle size and morphology.

Disclosed are to compositions to form foams, foams formed and method to form foams. Disclosed are foams comprised of a co-polymer of vinylidene substituted aromatic monomers and unsaturated compounds containing an acid that are reversibly ionically bonded through the use of a metal salt, metal oxide or combination thereof, wherein the metal has a valence of 2 or more, which contains graphite.

A compound of formula (I) wherein R1 is H or methyl, R2 and R3 are independently selected from H, C1-C4 alkyl, cycloalkyl and phenyl-C1- C4-alkyl, or R2 and R3, together with the carbon atom to which they are attached, form a C3-C6 carbocycle, R4 is H or C1-C4 alkyl, and A is C2-C7-alkylene is a suitable precursor for polyisocyanate-adducts and crosslinkers for obtaining isocyanate-free urethane-type polymers.

Described is a device for providing haptic stimuli to a body part of a user, the device comprising an actuating element configured to deform between a non-actuated state and an actuated state upon electrothermal activation, wherein the actuating element comprises a laminated structure including a flexible layer comprising liquid crystal elastomer (LCE); a conductive layer, electrically couplable to an electrothermal activator, and comprising an electrically conductive polymer; and an priming layer provided in between the flexible layer and the conductive layer and comprising an priming polymer, wherein the electrically conductive polymer derives from 3,4-ethylenedioxythiophene (EDOT) monomer units, while the priming polymer derives from vinyl or vinylidene monomer units. Also described is a method of manufacturing said device for providing haptic stimuli to a body part of a user.

A foaming composition useful to make an extruded foam is comprised of comprising a plurality of chains of a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids, the copolymer having about 0.01 to about 15.0 percent by weight of the one or more unsaturated acids wherein the acid groups are pendant from the copolymer a metal salt, metal oxide or combination thereof, the metal having a valence of at least 2; and one or more blowing agents. The foaming composition may be made into a foam by heating the foaming composition to a temperature sufficient to melt and ionically crosslink said copolymer which is then extruded through a die forming a foam. The foam is comprised of an ionically crosslinked aforementioned copolymer, wherein the copolymer is crosslinked through ionic bonds between the unsaturated acids and the metal of the metal salt or metal oxide.

The present invention discloses the synthesis of D-A type organic small molecules with a fulvalene-like structure and their application in photocatalytic hydrogen evolution, belonging to the field of organic material technology. This type of organic small molecule photocatalyst has many advantages: 1) the photogenerated excitons of the D-A type structure are easily delocalized within the molecule, which is beneficial for the separation of electrons and holes; 2) the fulvalene-like structure does not contain unstable vinylidene protons, which is beneficial for improving the light and chemical stability of the material; 3) the molecular structure is simple, easy to synthesize, and low in cost; 4) compared with polymers, no palladium (Pd) catalyst is used in the synthesis process. The D-A type organic small molecule with a fulvalene-like structure of the present invention was successfully used in photocatalytic hydrogen production experiments and obtained good hydrogen production efficiency.

This invention discloses a phenyl-modified vinylacenaphthene nickel catalyst, its preparation method, and its applications. The catalyst has the structural formula shown in Formula (I), where X is chlorine or bromine. The catalyst has a simple preparation process and, when used as a co-catalyst for ethylene polymerization, exhibits results contrary to conventional experimental observations: larger substituents lead to lower molecular weight, better flowability, and dispersibility in the polymerized product, showing broad application prospects in the elastomer field. Furthermore, the catalyst also exhibits good thermal stability and polymerization activity, demonstrating promising industrial application potential. Formula (I)

The invention belongs to the field of medicines, and relates to application of a benzothiazinone vinylidene indene compound in preparation of an osteoclast differentiation inhibitor. Through tartrate-resistant acid phosphatase (TRAP) staining and reverse transcription real-time fluorescent quantitative polymerase chain reaction (RT-qPCR) technologies, it is proved for the first time that the series of compounds can significantly inhibit RANKL-induced osteoclast differentiation and polykaryotic osteoclast formation, and have no cytotoxicity at the concentration of 5 [mu] M or below. Based on the discoveries, the benzothiazinone vinylidene indene compound provided by the invention can be used as a candidate drug molecule of a novel osteoclast differentiation inhibitor, and is used for preventing and / or treating osteoporosis, periprosthetic osteolysis, tumor metastasis bone destruction, rheumatoid arthritis and other bone metabolism diseases caused by overactivity of osteoclasts.

Magnetic beads including a polymer and magnetic particles that have been modified with a silane coupling agent, wherein the polymer includes a structural unit derived from a monomer (a) having at least one type of group selected from the group consisting of a vinyl group, a vinylidene group, and a (meth)acryloyl group, and the silane coupling agent includes at least one type of group selected from the group consisting of a vinyl group, a vinylidene group, a (meth)acryloyl group, and a styryl group.

The present invention provides an ethylene-1-octene copolymer, characterized in that the copolymer has a molecular weight of 850 kg / m 3 Up to 930kg / m 3 The density is in the range of 0.3 g / 10 min to 100 g / 10 min according to ISO 1133, the melt flow rate MFR2 (190°C, 2.16 kg) is in the range of 5.0 to 15.0 10 / MFR2, Mw / Mn in the range of 2.0 to 5.0, 1.0 to less than 20 ethylene unsaturated units / 100000 C atoms, more than 5.0 to 35 vinylidene unsaturated units / 100000 C atoms, more than 5.0 to 30 vinylidene unsaturated units / 100000 C atoms, more than 15.0 to 60 trisubstituted unsaturated units / 100000 C atoms, 26 to 150 total unsaturated units / 100000 C atoms, wherein the total unsaturated units / 100000 C atoms are vinyl unsaturated units. The sum of saturated units / 100000 C atoms, vinylidene unsaturated units / 100000 C atoms, vinylidene unsaturated units / 100000 C atoms, trisubstituted unsaturated units / 100000 C atoms, unsaturation of unsaturation types e) to h) according to formula (I), wherein the vinyl unsaturation is in the range of 5.0% to 15.0%, the vinylidene unsaturation is in the range of 20.0% to 30.0%, and wherein the sum of the vinyl unsaturation and the vinylidene unsaturation is at least 30.0% up to 50.0%

The present invention belongs to the technical fields of organic synthesis, fine chemicals and pharmaceutical synthesis, and specifically relates to a method for preparing γ-vinylidene-butenoic acid lactones and / or benzofulvene compounds. The method utilizes an acid-catalyzed dehydration rearrangement reaction of cyclopropenyl alcohol derivatives to achieve the synthesis of two important compounds, γ-vinylidene-butenoic acid lactone and benzofulvene, under the condition of a "one-pot reaction"; at the same time, the preparation method is used as an important synthesis strategy to achieve the efficient synthesis of the anti-inflammatory drug rofecoxib and the benzofulvene natural product anmindenol A.

The invention relates to a graft polyarylether (‘PAE’) copolymer (P1), a process for preparing the graft PAE copolymer (P1) from a side-chain allyl / vinylene-functionalized PAE copolymer (P0) via free radical polymerisation with at least one betaine methacrylate or acrylate (B(m)A) vinyl monomer and optionally further with vinyl pyrrolidone (VP), and the use of the graft PAE copolymer (P1) in the preparation of an article, such as a membrane or a part thereof. The graft PAE copolymer (P1) comprises at least two types of recurring units, one of which having side-chain grafted poly(B(m)A) homopolymers or poly(B(m)A-VP) copolymers. The PAE copolymer (P0), from which the graft PAE polymer (P1) is prepared, may be an amorphous side-chain allyl / vinylene-functionalized polyaryletherketone or polyarylethersulfone copolymer.

To provide magnetic beads capable of suppressing variation in light scattering in light scattering measurement.SOLUTION: A magnetic bead includes a polymer and a magnetic particle modified with a silane coupling agent, wherein the polymer includes a structural unit derived from a monomer (a) having at least one selected from the group consisting of a vinyl group, a vinylidene group, and a (meth)acryloyl group, and the silane coupling agent includes at least one selected from the group consisting of a vinyl group, a vinylidene group, a (meth)acryloyl group, and a styryl group.SELECTED DRAWING: Figure 1

Disclosed are stabilized compositions based on polycarbonates using a buffer. Disclosed are stabilized compositions comprising 1) polycarbonates comprising virgin and / or recycled polycarbonate, 2) one or more recycled polycarbonates, one or more flame retardants, and / or one or more glass fibers and 3) a buffer system. Disclosed are stabilized compositions comprising polycarbonates comprising recycled and / or virgin polycarbonates, one or more flame retardants and / or one or more glass fibers, one or more vinylidene aromatic substituted polymers, and a buffer system. Disclosed are methods for preparing such compositions. Disclosed are articles prepared from such compositions.

In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, the disclosure, in one aspect, relates to uncured compositions that include an elastomer, a curing agent, a co-curative, and a diluent, where the diluent comprises a highly reactive polyisobutene with at least about 60 mol % of terminal vinylidene groups. In certain aspect, the diluent can include a second diluent comprising a second polyisobutene comprising at most about 20 mol % terminal vinylidene groups, a hydrocarbon oil, or a combination thereof. Also disclosed are vulcanized rubber compositions including the uncured compositions that have been vulcanized and articles, including tires and / or components of tires, comprising the vulcanized rubber compositions.

The present invention discloses a kind of efficient green and universal melt synthesis method of covalent organic framework, comprising the steps of: making organic monomer 1, organic monomer 2 and auxiliary agent melt polymerization reaction, and the product is activated to obtain a covalent organic framework; the auxiliary agent is containing amides, phosphoramides, acylhydrazones, hydrazides or phosphoramidites for synthesizing stable imines, hydrazones, acylhydrazones, polyimides, vinyls, vinylides, ketone-enols or pyrazines COFs with good applicability. The method is characterized by good applicability and process greening, and can achieve solvent-free, cyclic auxiliary agents, simple process, and simple equipment of multiple types of COFs. Batch synthesis has high specific surface area and higher crystallinity COFs. At the same time, the method breaks through the harsh conditions required for the solvent thermal synthesis common to traditional COFs and does not use harmful organic solvents, and is suitable for large-scale batch preparation of high-quality COFs materials.

The present invention relates to a process for preparing a polymer containing ethylene units and bearing at the end of the chain a 1-arylethenyl group, which process comprises the polymerization of a monomer selected from ethylene and a monomer mixture containing ethylene and a 1,3-diene in the presence of a catalytic system and a 1-methyl-1-arylethene, the catalytic system being based on a neodymocene borohydride and an organomagnesium compound.

Disclosed are ionomers of co-polymers of vinylidene substituted aromatic monomers and unsaturated compounds containing acid groups crosslinked by the residue of one or more metal salts and / or metal oxides of a metal having a valence of 2 or greater. The crosslinks are reversible and the weight average molecular weight of the copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids may be substantially the same after the crosslinking is reversed as it is before crosslinking. A portion of the chains of the copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids are crosslinked with other chains of the copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids. Disclosed are methods of preparing such ionomers.

The application discloses an unsymmetrical (alpha-diimine) nickel olefin catalyst based on a vinylidene acen as a skeleton, and a preparation method and application thereof. The structural formula of the catalyst is shown as formula (I), wherein X is chlorine or bromine. The catalyst has simple preparation process, and shows a result opposite to general rules when catalyzing ethylene polymerization, that is, a larger substituent group leads to a polymerization product with higher crystallinity. In addition, the catalyst also shows good thermal stability and polymerization activity, and has good industrial application prospect.

The application provides a quinoline pyridine nickel pre-catalyst and a preparation method and application thereof. The nickel pre-catalyst is 8-(2,6-di(aryl)-3,4,5-trifluorophenyl) imino-5,6,7-trihydroquinoline pyridine. Under the protection of inert gas, a ligand L is prepared by using 5,6,7-trihydroquinoline-8-ketone and synthetic aniline A, and the ligand L is reacted with (DME)NiBr2 to prepare a series of nickel pre-catalysts Ni R ; the nickel pre-catalyst is activated by methylaluminoxane (MAO) and used for ethylene polymerization catalytic performance experiment, the nickel pre-catalyst shows high catalytic activity (3.1×10 6 g mol ‑1 h ‑1 ), and produces controllable polyethylene with chain walking (branching degree = 58-90 / 1000C), chain transfer (polymer M w = 0.7-2.8 kg mol ‑1 ) and chain termination reaction (vinylidene / ethylene = 83.4-93.6%) and the like. It is worth noting that the beta-elimination reaction is the main chain termination mode in the system, so that the obtained polyethylene can change from polyethylene wax to viscous oil with the change of polymerization temperature, and further produce polyethylene with a higher internal double bond ratio.