94 results about "Carbanion" patented technology

A method of using a metal complex as an n-dopant for doping an organic semiconducting matrix material in order to alter the latter's electrical characteristics is provided. In order to provide n-doped organic semiconductors with matrix materials having a low reduction potential, while achieving high conductivities, the n-dopant is a neutral electron-rich metal complex with a neutral or charged transition metal atom as a central atom and having at least 16 valence electrons. The complex can be polynuclear and can possess at least one metal-metal bond. At least one ligand can form a π complex with the central atom, which can be a bridge ligand, or it can contain at least one carbanion-carbon atom or a divalent atom. Methods for providing the novel n-dopants are provided.

A functionalized polymer includes a directly bonded moiety, which can be located at a terminus of the polymer, defined by the formula —CR¹R²NH-Q-M where M is (N═CR¹R²) or N-(QN═CR¹R²)₂ each Q independently is a substituted or unsubstituted, cyclic or acyclic C₁-C₄₀ alkyl, aryl, or alkaryl radical, and each R¹ and R² independently is a hydrogen atom or a substituted or unsubstituted alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, allyl, aralkyl, alkaryl, or alkynyl group. The polymer can be provided by introducing a polyimine compound into a system that includes carbanionic (living) polymer. Such polymers can be used in the production of compositions that include particulate fillers.

The invention discloses a method for separating methionine from a mixed solution of methionine salt and carbonate by using bipolar membrane electrodialysis. The method is characterized by comprising the steps of arranging a bipolar membrane electrodialysis system, and separating methionine from a mixed solution of methionine salt and carbonate by using a bipolar membrane electrodialysis process, wherein a bipolar membrane is capable of simultaneously generating hydroxyl ions and hydrogen ions through hydrolytic dissociation, the hydrogen ions are capable of neutralizing methionine ions and carbanions in the mixed solution of methionine salt and carbonate to generate methionine, and the generated hydroxyl ions are capable of combining with positive ions to obtain inorganic base. According to the method, a large quantity of acid and alkaline are not required to be additionally introduced in the bipolar membrane electrodialysis process, the environment friendliness is achieved, the process cost is lowered, no inorganic salt waste residue is generated in the process, the recovery efficiency of methionine is high, and the purity is high, thus the generated wastewater is more easily treated.

Disclosed is a photosensitive composition for volume hologram recording which shows excellent interference fringe record and a volume hologram recording medium having lighter weight and excellent storage stability. The invention is directed to a volume hologram recording photosensitive composition comprising: (a) a compound having at least one active methylene group in one molecule or a compound having at least two active methine groups in one molecule; (b) a compound containing in one molecule two or more groups which are nucleophilicly added by a carbanion generating from an active methylene group or an active methine group; (c) a Michael-reaction catalyst; (d) a photopolymerizable compound; and (e) a photopolymerization initiator composition.

A process for the preparation of 1-[(cyano) aryl methyl] cyclohexanol of the general formula 1 (1a-d) by reacting cyclohexanone with the carbanions of an aryl acetonitrile of the general formula 3 (3a-d), a) R1=H, R2=H b) R1=OMe R2=H c) R1=OMe R2=OMe d) R1=OMe R2=cyclopentyloxy using a base, isolating the compound of formula I and purifying the compound of formula 1a-d by crystallisation is disclosed.

The invention relates to a bay-site cyclization synthetic method of 3, 4:9, 10-perylenetetracarboxylic bisimide. The method comprises the following steps: dissolving bay-site nitrified 3, 4:9, 10-perylenetetracarboxylic bisimide and a compound which can form carbanions in a polar aprotic organic solvent; adding an alkaline matter; stirring and reacting for 0.5-5 hours in a temperature range of 0-40 DEG C; dropwise adding the reacted liquid into diluted hydrochloric acid; separating out precipitates; and filtering, washing and drying to obtain the product. The method provided by the invention guarantees the planar structure of perylenetetracarboxylic bisimide to the maximum extent, and is mild in reaction condition and simple in reaction step. The obtained product is higher in yield which is basically over 50%, and the higher yield is over 80%.

The present disclosure relates to a polymerization initiator and a modified conjugated diene polymer prepared using the same, and more particularly to a polymerization initiator which is a compound represented by the following formula 1, and a modified conjugated diene polymer prepared using the same:

wherein R₁ to R₅ are each independently hydrogen or a C_1-10 alkylgroup or its carbanion; n− represents the number of negative charges of the carbanion and is 1− to 5−; M is a metal; and n is equal to the number of carbanions in R₁ to R₅.

The invention belongs to the polymer synthesis technical field, specifically provides a polymer whose end groups contain various functional groups and a preparation method of the polymer. The invention uses polymer active carbanions induced by lithium alkyl to have quantitative cap reaction with heterocylic small molecules compounds (epoxy and episulfide compounds) containing protective group subsituents, namely one carbanion can only make the ring of one cyclic compound opened and a new active hydroxyl or mercapto is produced at the same time, therefore, the polymer end groups both contain one or a plurality of protective end groups and active hydroxyl or mercapto polymers. Then functionalized polymers with various combinations are obtained through the selective modification by the functional groups of the end groups of the polymers. In the invention, the end groups fictionalization is in high efficiency and strong universality. Moreover, the polymers can be used for designing the polymers with complex structure.

A wellbore fluid that includes an oleaginous continuous phase; a non-oleaginous phase; and a polymeric additive formed by mixing at least one lipophilic monomer and at least one crosslinking agent, wherein the at least one lipophilic monomer is at least one of an epoxide-functionalized derivative of at least one selected from soybean oil, linseed oil, rapeseed oil, cashew nut shell oil; perilla oil, tung oil, oiticia oil, safflower oil, poppy oil, hemp oil, cottonseed oil, sunflower oil, high-oleic triglycerides, triglycerides of euphorbia plants, peanut oil, olive oil, olive kernel oil, almond oil, kapok oil, hazelnut oil, apricot kernel oil, beechnut oil, lupine oil, maize oil, sesame oil, grapeseed oil, lallemantia oil, castor oil, herring oil, sardine oil, menhaden oil, whale oil, tall oil, and synthetic aliphatic or aromatic ethers, and the at least one crosslinking agent includes at least one selected from amines, alcohols, phenols, thiols, carbanions, carboxylates, and mixtures thereof is disclosed.

The present invention provides trimerization catalyst compositions having at least one carbanion compound and methods to produce a polyisocyanurate/polyurethane foam using such trimerization catalyst compositions.

The invention provides a method for preparing three crystal configuration type calcium carbonate granules, belongs to the technical field of preparation of calcium carbonate granules, and aims at solving the problems that the preparation methods of calcium carbonate with different crystal configurations are independent from each other and are hard to combine, and the preparation method is complex.The method is characterized in that carbanion and calcium ions are mixed based on the concentration of 1: 1; a salt solution system is in a 500mL flask, and the flask is arranged on a magnetic stirrer for magnetically stirring at the speed of 1000rad/min; the salt solution system is arranged in front of the magnetic stirrer and is ultrasonically oscillated for 10min. Therefore, three crystal configuration type calcium carbonate granules can be obtained under different reaction conditions and reaction systems. The method is different from complex and multi-change gas-liquid reactions systems;the reaction system is high in operability, and high in repeatability.

A functionalized polymer includes a directly bonded moiety, which can be located at a terminus of the polymer, defined by the formula —[—CR¹R²NH—O—]—Si where each R¹ and R² independently is a substituted or unsubstituted hydrocarbyl group and where the Si atom can be bonded through similar moieties to up to three other polymers and/or to the appropriate number of non-interfering groups. The polymer can be provided by introducing a ketoximesilane compound into a system that includes carbanionic (living) polymer. Such polymers can be used in the production of compositions that include particulate fillers.

The invention relates to an annihilation agent applied to a triplet-triplet annihilation up-conversion system, and a preparation method and an application method thereof. The annihilation agent is 9,10-difluorenyl anthracene. The preparation method includes: generating an intermediate product by using Suzuki reaction, and then substituting 9, 10 positions of anthracene with the intermediate product by using carbanion reaction. A photosensitizer of the annihilation agent on the triplet-triplet annihilation up-conversion system is a metalloporphyrin compound: octaethylporphyrin palladium. The up-conversion system converts green light of 532nm into blue light of 440nm, and conversation rate of the up-conversion system is 5.86%. The disclosed small organic molecule annihilation agent material easy to prepare and efficient and stable is prepared through raw material easy and simple to obtain, uses the preparation process simple and free from pollution, conforms to development requirements of green chemistry, and is suitable for industrial mass production.

Carbanionic polymer chains that contain polyene mer can be coupled after being reacted to include, at their respective termini, at least one, and preferably one, unit that is the radical of a cyclic polysiloxane. The coupled polymers are useful in preparing rubber compounds from which vulcanizates are made.

A radial multi-block copolymer composition comprising a polystyrene block A₁, a hard block A₂ comprising another type of monovinylarene monomer, two soft blocks B, and B₂ of conjugated diene monomer and a coupling agent, the composition of the radial multi-block copolymer having the structure (B₁A₁A₂B₂)_nZ, where the weight percent of n=5+ is greater than about 40 and Z is a residue of the coupling agent. A process comprising (a) anionically polymerizing styrene monomer Al, at least one monovinylarene monomer A₂ other than styrene, and at least one conjugated diene monomer B₁ to form multi-block copolymer chains having the structure (B₁A₁A₂), wherein the amount of monovinylarene monomer A₂ is from about 0.5 wt % to about 80 wt % of the total amount to form a hard block A₁A₂; (b) anionically polymerizing at least one conjugated diene monomer to form copolymer chains having a soft block B₂ and a polydienyllithium carbanion at the end of the copolymer chains; (c) adding a metal alkyl coupling promoter, preferably triethylaluminum, after initiating anionic polymerization and before reaching a peak reaction temperature; and (d) mixing in a coupling agent to form a copolymer having a residue (Z) of the coupling agent, wherein the copolymer is a radial multi-block copolymer having the structure (B₁A₁A₂B₂)_nZ, and wherein the weight percent of n=5+ is greater than about 40. The radial multi-block copolymer has application in pressure-sensitive adhesives, engineering plastics, and polymer-modified asphalts with good control of viscosity and without yellowness.

A selfbonding enamel containing resins which are capable of crosslinking with one another, comprising

• • (A) 5 to 95 wt % of at least one resin with nucleophilic groups selected from the group consisting of OH, NHR, SH, C(O)NHR, carboxylate, CH-acidic groups and Carbanions,
  • (B) 0 to 70 wt % of at least one amide group-containing resin and
  • (C) 0 to 30 wt % of at least one polyurethane resin,
  • (D) 0 to 30 wt % of at least one epoxy resin,
  • (E) 5 to 95 wt % of at least one organic solvent,

wherein the resins of either component (A) and/or, if component (B) is contained in the composition, component (B) contain α-carboxy-β-oxocycloalkyl carboxylic acid amide groups the coatings of the selfbonding enamel have excellent adhesion to electrically conductive wires high sticking properties and high re-softening temperatures.

The invention relates to a preparation method of carbon nanometer tube/ polymer nanometer composite material in nanometer technique field. Metal and benzophenone are reacted into carbanion reactive species in the dry organic solvent. The reactive species reacts with the carbon nanometer tube to trigger vinyl monomer polymerization. Then alcohol is used to stop the reaction. The outcome is collected, dried. Then the carbon nanometer tube/ polymer nanometer composite material is gained. The metal is one or some of the kalium, natrium, and lithium. The vinyl monomer is styrene, methyl styrene, acrylonitrile, acrylic acid methyl ester, methyl acrylic acid methyl ester, and acrylic acid fat. In the carbon nanometer tube composite material of the invention, the polymer molecule is grafted to the tube wall of the carbon nanometer tube; the carbon nanometer tube and the polymer have great interaction; this can improve the capability of the material. The preparation method is simple and practical; and it does not need special chemical modification for the carbon nanometer tube.

The invention discloses a synthesizing method of macromolecular monomer based on P-ethylene benzene sulfochloride capping agent in the macromolecular chemical domain, which comprises the following steps: 1. adopting anion polymerizing method to synthesize active polyphenylacetylene; 2. transmitting active chain anion carbon into anion oxygen through epoxyethane; 3. adopting one method of positive adding, negative adding, low-temperature and high-tempeature reacting methods to cap end of P-ethylene benzene sulfochloride for 2-24h.

The invention relates to a five-ring three-substituted benzo sultam derivative and the preparation method, belonging to the field of chemical technology. The derivative has such a structure as shown in the formula (I): R1 = hydrogen, alkyl, methoxy, halogen and so on; R2 and R3 = alkyl, aryl, miscellaneous aryl, miscellaneous alkyl, and so on. The preparation method uses the N-tert-butyl - benzene sulfonamide derivatives as the raw material; with the influence of the positive butyl lithium, react to form the negative ions of carbon; then react with the benzaldehyde containing the methoxy and other substituting functional groups to form the middle alcohol. Optimize the cyclization conditions, such as the adjustment of the consumption of the TMSC1/NaI/MeCN reagent, the addition of the reaction aid, the control of the reaction temperature and reaction time and so on, to synthesize a series of five-ring benzo sultam derivative.

Disclosed is a process for preparing a compound having formula (I) wherein R<1> is selected from the group consisting of: alkyl, alkenyl, alkynyl, aryl, aralkyl, cycloalkyl, and cycloalkyalkyl, R<1> being optionally substituted by substituents selected from halo, -OH, alkyl, alkoxy, or -CF3, said process comprising the following steps: (a) reacting a ketone having formula (A) with a carbanion having formula (B) wherein R<1> is defined above, and R<2> and R<3> are independently selected from the group consisting of -OR and -R; wherein R is alkyl, phenyl, substituted phenyl, cycloalkyl, substituted cycloalkyl, cycloalkylalkyl, or substituted cycloalkylalkyl; (b) treating the reaction mixture from step (a) with a protonating agent to form a beta-hydroxy intermediate having formula (C) wherein R<1>, R<2> and R<3> are as defined above; and (c) thermally decomposing the beta-hydroxy intermediate to form the compound of formula (I). The compounds made by this process have antihistaminic activity, e.g., loratadine. Also disclosed is a process for preparing descarboethoxyloratadine, by carrying out the process above, and converting the product to descarboethoxyloratadine. Also disclosed are novel intermediates having formula (II) and (III) wherein R<1>, R<2> and R<3> are as defined above.

A problem of the present invention is to provide an economical process with minimized toxicity for producing an aromatic compound having a variety of substituents such as various alkyl groups, and the problem is solved by a process for production of an aromatic compound represented by formula (1) below, which comprises reacting a compound represented by formula (2) below with an aromatic magnesium reagent represented by formula (3a) below in the presence of an iron catalyst and a diamine compound:

wherein R is an optionally substituted hydrocarbon group or a C₃-C₁₀ saturated or unsaturated ring group; A is an optionally substituted C₄-C₂₀ aromatic group or an optionally substituted heteroaromatic group; X is a halogen atom or a sulfonic acid ester; and Y¹ is bromine, iodine, chlorine or a carbanion ligand.

The invention relates to a paint composition for carpentry and a wood product manufactured by the paint composition. The paint composition comprises a film forming resin composition (A) and a catalyst (B), wherein the film forming resin composition comprises a reactive donor capable of providing two or more nucleophilic carbanions, and a reactive receptor containing two carbon-carbon double bond groups; the catalyst is used for catalyzing the reactive donor and the reactive receptor to take Michael addition cross-linking reaction, wherein at least one of the reactive receptor and the reactive donor contains an aromatic ring structure; a polymer formed through reactive receptor homopolymerisation has 100 DEG C or higher Tg.

The invention discloses a carbon anionic photo base generator. A structural general formula of the carbon anionic photo base generator is as shown in a general formula (I), and the carbon anionic photo base generator is prepared through an acid-base neutralization reaction between an anthrone compound and quaternary ammonium base. The photo base generator disclosed by the invention is a compound which is capable of generating high-activity carbon anions, the problems of weak catalytic activity, low quantum yield and the like of an existing photo base generator are solved, the carbon anionic photo base generator has the advantages of simpleness in synthesis, high quantum yield, high basicity, high polymerization speed and the like, photo-sensitive resin can be rapidly cured under an illumination condition, and huge potential for applying the carbon anionic photo base generator in the field of micro-electronics is obtained.

A crosslinkable coating composition comprising: ingredient A that has at least two protons that can be activated to form a Michael carbanion donor; ingredient B that functions as a Michael acceptor having at least two ethylenically unsaturated functionalities each activated by an electron-withdrawing group; and a dormant carbamate initiator of Formula (1)

wherein R₁ and R₂ can be independently selected from hydrogen, a linear or branched substituted or unsubstituted alkyl group having 1 to 22 carbon atoms; 1 to 8 carbon atoms; and Aⁿ⁺ is a cationic species or polymer and n is an integer equal or greater than 1 with the proviso that Aⁿ⁺ is not an acidic hydrogen; and optionally further comprising ammonium carbamate (H₂NR₁R₂⁺⁻OC═ONR₁R₂). The crosslinkable coating composition can be used for a variety of coating applications including nail coating compositions.

The invention relates to a method for oxidatively removing hydrogen sulfide. The method adopts peroxide, or peroxide and oxygen, or mixture of peroxide and air as an oxidant and a compound with an activating effect, namely the compound which can generate carbanions, bicarbonate ions, sulfate ions, borate ions, hydroborate ions, phosphate ions, monohydrogenphosphate ions and dihydrogen phosphate ions in an aqueous solution, as an activator. The method comprises the following steps: mixing the activator and the oxidant, standing at negative 15-85 DEG C for 1-45 minutes, mixing with a hydrogen sulfide solution, stirring to react, or introducing the hydrogen sulfide gas into a hydrogen sulfide absorption liquid to react. Under a weak base condition, the hydrogen sulfide removal rate by the method can be 96-99 percent or above, the corrosion degree on equipment is relatively small, and the reacted product is safe and pollution-free.