35 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 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.

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.

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 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.

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.

Polymorph forms of 4-trifluoromethyl-N-(3,3a,4,4a,5,5a,6,6a-octahydro-1,3-dioxo-4,6-ethenocycloprop[f]isoindol-2 (1H)-yl)-benzamide are disclosed as well as their methods of synthesis and pharmaceutical compositions.

The invention belongs to the technical field of organic synthesis, and particularly relates to a 2, 3-dihydro-1H-pyrrole and polysubstituted pyrrole compound and a preparation method thereof. According to the invention, N-(4-vinylidenetetrahydrofuran-2-yl) amide is used as a reaction raw material, and 2, 3-dihydro-1H-pyrrole and polysubstituted pyrrole compounds can be prepared at normal temperature and normal pressure through a gold catalysis skeleton editing strategy. The preparation method provided by the invention has the advantages of simple operation, easy preparation of raw materials, mild reaction conditions, wide substrate range and easy industrial production. The 2, 3-dihydro-1H-pyrrole and polysubstituted pyrrole compound prepared according to the method provides a new thought for heterocyclic ring synthesis in organic synthesis and pharmaceutical chemistry, and has good industrial conversion prospects and economic benefits.

The present invention relates to a method for preparing cyclic carbonates having an exocyclic vinylidene group by reacting propargyl alcohol with CO2 in the presence of a silver catalyst having at least one bulky ligand and a lipophilic carboxylate ligand, wherein after the reaction is complete, the catalyst is separated from the cyclic carbonate by using two organic solvents with different polarities having a solubility gap, and the silver catalyst is enriched in the less polar solvent and the cyclic carbonate is enriched in the more polar solvent.

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.

A fiber-treating agent which improves the water resistance and the heat resistance, imparts heat shape memory ability, and also improves the stretchability and the feel of the surface of a fiber. The fiber-treating agent is a one-part type fiber-treating agent formed of a single composition or a multiple-part type fiber-treating agent formed of a plurality of compositions and comprises the following components (A) to (C) in a total composition: (A): an aromatic compound having one or more vinyl groups or vinylidene groups, and a coordinating functional group; (B): a radical initiator; and (C): water.

The invention discloses a zirconium complex. The molecular formula of the zirconium complex is Zr (L) nX4-n, wherein L is a bidentate ligand containing a phenoxy-imine structure, X is selected from halogen, n is 2 or 3, the molecular formula of the bidentate ligand containing the phenoxy-imine structure is Ar-N = CR1R2, Ar is substituted or unsubstituted C6-C20 aryl, m is an integer selected from 1-3, and R1 and R2 are respectively and independently selected from C1-C12 alkyl, C3-C8 cycloalkyl or C6-C12 aryl. The invention also discloses a preparation method of the zirconium complex. The bidentate Schiff base zirconium complex with the phenoxy-imine structure, provided by the invention, can be used for ethylene-bornene polymerization reaction, has relatively good stability in the reaction process, is not easy to inactivate, and is beneficial to ensuring the quality and the yield of a polymerization product; specifically, the polymerization activity of the prepared Schiff base zirconium complex catalyst Zr-poa-hal is 1490 (kgCopolymer: mol Ti <-1 > h <-1 >); the insertion rate of the 5-vinylidene-2-norbornene in the obtained copolymer is 61.9 percent; the glass transition temperature Tg of the obtained copolymer is 195 DEG C.

The preparation method comprises the following steps: carrying out dearomatization-ring expansion reaction on benzene under mediation of metals such as chromium to obtain a fluorinated cycloheptatriene complex; the preparation method comprises the following steps: carrying out a ligand dissociation-cyclization reaction on a fluoro cycloheptatriene complex to obtain 4-fluoro-4, 4a, 5, 5a, 6, 6a-hexahydro-1H-4, 6-vinylidene cyclopropyl [f] isobenzofuran-1, 3 (3aH)-diketone, and carrying out a ligand dissociation-cyclization reaction on the fluoro cycloheptatriene complex to obtain 4-fluoro-4, 4a, 5, 5a, 6, 6a-hexahydro-1H-4, 6-vinylidene cyclopropyl [f] isobenzofuran-1, the preparation method comprises the following steps: further carrying out condensation reaction on 4-fluoro-4, 4a, 5, 5a, 6, 6a-hexahydro-1H-4, 6-vinylidene cyclopropyl [f] isobenzofuran-1, 3 (3aH)-diketone to obtain the tecovirimat fluoro derivative. At normal temperature, the compound is a white solid, is easily soluble in methanol, ethanol and dichloromethane, and is slightly soluble in water. According to the method, starting from a cheap and easily available chemical product benzene, rapid construction of the tecovirimat fluoro derivative is realized, and the method has the advantages of mild reaction conditions, wide substrate application range, good selectivity, simple operation, easy product separation and the like. At 37 + / -5 DEG C, the solubility of the tecovirimat fluoro derivative VI in water is 8 [mu] g / mL, and compared with a tecovirimat drug, the solubility is obviously improved.

A process for preparing a polyalpha-olefin (PAO) having a high vinylidene content (or total vinylidene and tri-substituted vinylene content) and a low vinyl and / or di-substituted vinylene content and a relatively low molecular weight, comprising contacting a feed containing C6-C 32 The feed of alpha-olefins is contacted with a catalyst system comprising an activator soluble in the non-aromatic hydrocarbon and a metallocene compound, typically a cyclopentadienyl-tetrahydro-s-indacenyl Group 4 transition metal compound.

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 reaction with vinyl pyrrolidone, 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(vinylpyrrolidone). The invention also relates to an amorphous side-chain allyl / vinylene-functionalized polyaryletherketone copolymer (P0).

Processes for producing a 1-octene tetramer (C32) product include the steps of contacting a first catalyst composition with an olefin feedstock comprising at least 50 wt. % of 1-octene under first oligomerization conditions to produce a first oligomer product comprising a C16 vinylidene dimer, followed by separating the C16 vinylidene dimer from the first oligomer product, and then contacting the C16 vinylidene dimer with a second catalyst composition under second oligomerization conditions to produce a second oligomer product comprising at least 50 wt. % of C32 olefins. Polyalphaolefins can subsequently be produced by separating the C32 olefins from the second oligomer product and hydrogenating the C32 olefins to form the polyalphaolefin product. Polyalphaolefins produced from the C32 olefins have an advantageous combination of kinematic viscosity, pour point, flash point, and viscosity index.

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

A process can be used for preparing cyclic carbonates with an exocyclic vinylidene group by reacting a propargylic alcohol with CO2 in the presence of a silver catalyst having at least one bulky ligand a lipophilic carboxylate ligand. After completion of the reaction, the catalyst is separated from the cyclic carbonate by the use of two organic solvents of different polarity and having a miscibility gap. The silver catalyst is enriched in the less polar solvent and the cyclic carbonate in the more polar solvent.

Methyl paraffins formed by hydrogenating one or more LAO dimers comprising a vinylidene moiety or a trisubstituted olefin moiety may have advantageous heat transfer properties, particularly when incorporated within an electric vehicle. For example, methyl paraffins produced upon hydrogenating LAO dimers formed from one or more C6-C12 LAOS, particularly in the presence of a Hf metallocene catalyst system, may contain 12-24 carbon atoms, and collectively have a flash point of about 130° C. or above, a pour point of about −42° C. or lower, a thermal conductivity at 80° C. of about 0.165 W / m·K or higher, and a Mouromtseff number ranging from about 17,000 to about 27,000 kg / (s2.2·m0.6·K) at 80° C. Heat transfer fluids comprising such methyl paraffins may be placed in contact with a heat-generating component, such as a battery and / or motor of an electric vehicle, or within a similar type of battery system, including immersive configurations for a battery.

The invention discloses a lithium-sulfur battery positive electrode additive material, a preparation method and a use method, and belongs to the field of energy storage materials, an additive is a composite material composed of a vinylidene-linked covalent organic framework (BTAN-DHTPA-COF) and polypyrrole (PPy), and the additive has oxidation-reduction activity and good conductivity. The composite material is prepared through an in-situ polymerization method and specifically comprises the following steps: firstly, synthesizing a two-dimensional layered COF material (BTAN-DHTPA-COF) with oxidation-reduction activity, and then initiating pyrrole monomer polymerization in a pore channel of the two-dimensional layered COF material to form a compound (PPy (at) BTAN-DHTPA-COF). The material can be used as a functional additive in a positive electrode of a lithium-sulfur battery, the shuttle effect is effectively inhibited by adsorbing and catalytically converting polysulfide, and the cycling stability and rate capability of the battery are improved. The electrode forming device is reasonable in structure, mild in preparation process, suitable for various electrode forming modes such as integrated slurry or layered coating and the like, and good in application prospect.

A covalent compound free of any fluoroalkyl group, any perfluoroalkyl group, or a mixture of fluoroalkyl groups and perfluoroalkyl groups, comprising an imide N-(carbonylformamido) aryl sulfate moiety. One of the compounds has the structure (I) wherein R1 is a linking group selected from the group consisting of an unsubstituted alkylene group, a substituted alkylene group, an unsubstituted vinylidene group, a substituted vinylidene group, an unsubstituted arylene group, and a substituted arylene group, wherein the linking groups do not contain any fluoroalkyl group, any perfluoroalkyl group or a mixture of fluoroalkyl groups and perfluoroalkyl groups and R2 is an unsubstituted or substituted aryl group which does not contain any fluoroalkyl group, any perfluoroalkyl group or a mixture of fluoroalkyl groups and perfluoroalkyl groups and np is 1, 2, 3, 4 or 5. Also disclosed is a positive or negative chemically amplified photoresist composition comprising the covalent compound as a PAG component. A method of forming a positive or negative photoresist pattern using the positive or negative chemically amplified photoresist, respectively. (I).

The present invention relates to a method for preparing a polymer containing ethylene units and carrying, at the end of the chain, a 1-arylethenyl group, which method comprises polymerising a monomer chosen 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.