270 results about "Adduct" patented technology

A method of making an absorbent structure including mixing ultra-high molecular weight (“UHMW”) glyoxalated polyvinylamide adducts (“GPVM”) and / or high molecular weight (“BMW”), glyoxalated polyacrylamide and / or high cationic charge glyoxalated polyacrylamide (“GPAM”) copolymers and high molecular weight (“BMW”) anionic polyacrylamide (“APAM”) with the furnish during stock preparation of a wet laid papermaking process.

The invention discloses a method for synthesizing a dichloroacetyl compound, which comprises the following steps: tetrachloroethylene and an acid are subjected to an addition reaction at 100-200 DEG C to obtain an adduct, then the adduct is subjected to an acidolysis, hydrolysis or alcoholysis reaction to obtain the dichloroacetyl compound, the acid for the addition reaction is at least one of sulfuric acid, trifluoromethanesulfonic acid, methanesulfonic acid and phosphoric acid, and the acid for the alcoholysis reaction is at least one of sulfuric acid, trifluoromethanesulfonic acid, methanesulfonic acid and phosphoric acid. The molar ratio of the tetrachloroethylene to the acid is 1: (1-10). By controlling the types of acids and increasing the temperature of the addition reaction, the addition reaction of tetrachloroethylene and acids in the absence of a catalyst is realized. Double bonds of tetrachloroethylene and hydrogen protons are subjected to an addition reaction in a strong acid environment to form a cationic intermediate, then the cationic intermediate is combined with acid radical anions to form an adduct, and the adduct intermediate is high in activity, unstable and free of separation and can be directly subjected to a hydrolysis reaction, an acidolysis reaction or an alcoholysis reaction with another substrate (such as water, acid or alcohol) respectively. The synthesis of dichloroacetyl series compounds is realized, and the route has universality and diversity.

Disclosed are biodegradable polyesters. Methods for their production and adhesives prepared therefrom. The polyesters comprise a plurality of adducts of two dicarboxylates or anhydrides with a compound having at least two fused ring heterocycles containing a heteroatom and a hydroxyl group pendant from each ring, the adducts are linked by the residues of one or more diols of alkylene diols or polyoxyalkylene diols and a plurality of one or more aliphatic diols containing a pendant carboxylate group. Ester groups are formed by reaction of the hydroxyl groups of the fused ring compounds and the diols with the carboxylate groups of the dicarboxylates and the composition contains pendant carboxylate groups, wherein the composition contains two dicarboxylates, a first dicarboxylate or an anhydride containing between the carboxylate or carboxyl groups a C1-8 hydrocarbylene group and a second dicarboxylate containing between the carboxylate groups a C9-60 hydrocarbylene group.

To provide an amine of a specific compound, a carbonic acid adduct and a pharmaceutical composition for use in the treatment of atypical pneumonia and in the therapy of viral diseases.SOLUTION: The present invention provides an amine (AM) of the general formula (I) for use in the treatment of atypical pneumonia and in the therapy of viral diseases.SELECTED DRAWING: None

Disclosed are biodegradable polyesters prepared from bio sourced materials and methods for their production. The polyesters comprise a plurality of adducts of two dicarboxylates or anhydrides with a compound having at least two fused ring heterocycles wherein each heterocycle contains a heteroatom of oxygen or sulfur and at least one hydroxyl group pendant from each ring. wherein the plurality of adducts are linked by a plurality of residues of one or more diols of alkylene diols or polyoxyalkylene diols and a plurality of one or more aliphatic diols containing a pendant carboxylate group wherein ester groups are formed by reaction of the hydroxyl groups of the fused ring compounds and the diols with the carboxylate groups of the dicarboxylates and the composition contains pendant carboxylate groups.

To provide a defoaming agent capable of exhibiting excellent defoaming properties (foam breaking and foam suppressing effects) and excellent surface finishing properties (cissing and foam breaking marks).SOLUTION: And at least one hydrophobic substance (C) selected from the group consisting of hydrophobic silica, fatty acid metal salts, fatty acid amides, and waxes, wherein the content of the liquid glycerin fatty acid ester (A) is 4 to 49% by weight, the content of the liquid alkylene oxide adduct (B) is 51 to 96% by weight, and the content of the hydrophobic substance (C) is 0.1 to 15% by weight, based on the weight of the liquid glycerin fatty acid ester (A) and the liquid alkylene oxide adduct (B).SELECTED DRAWING: None

A method of making paper and paperboard products, including absorbent structures, where the method includes mixing ultra-high molecular weight (“UHMW”) glyoxalated polyvinylamide (“GPVM”) adducts and high molecular weight (“HMW”) anionic polyacrylamide (“APAM”) with the furnish during stock preparation of a wet laid papermaking process.

The invention relates to the technical field of organic silicon catalysis, and discloses a hydrosilylation reaction catalyst and a preparation method thereof, the catalyst is prepared from a platinum complex catalyst solution, maleic anhydride, triphenyl borate, tetraethoxysilane, propylene carbonate and diethylene glycol dibutyl ether; the preparation method comprises the steps of solvent water removal, electronic relay adduct preassembly, active metal introduction, thermal induction aging and the like. An electron-deficient coordination center is constructed through a step-by-step process, the electron cloud density of the platinum center is reduced by utilizing the Lewis acid characteristic of triphenyl borate, and the solvent cage effect of propylene carbonate is matched, so that the high-temperature tolerance of the catalyst is improved, and the generation of platinum black is effectively inhibited; meanwhile, the solubilizing and bridging effects of diethylene glycol dibutyl ether are utilized, the compatibility problem of a high-polarity component and a non-polar silicone oil matrix is solved, and the obtained catalyst has high activity, high regioselectivity and excellent long-term storage stability.

The invention belongs to the technical field of chemical engineering and fine fluorine chemical synthesis, and particularly relates to a preparation method of sulfuryl fluoride chloride. According to the preparation method, through the synergistic effect of a gas-liquid reaction system and a closed-loop circulation system, a tertiary amine hydrofluoric acid adduct (such as Et3N.nHF, n = 2-6) is used as a fluorinating reagent, sulfuryl fluoride chloride is generated through a rapid cross-flow reaction in excessive sulfuryl chloride (SO2Cl2) under the conditions that the temperature is 65-100 DEG C and the pressure is 0.5-2.0 MPa, and a liquid-phase byproduct tertiary amine hydrochloride hydrogen fluoride adduct (such as Et3N.HCl. (n-1) HF) is used for preparing the sulfuryl fluoride chloride. Supplementing hydrogen fluoride to regenerate the catalyst and recycling; and after a gas-phase product is pressurized, rectified and purified by a light component removal tower and a heavy component removal tower, totally returning a light component (Cl2 / SO2) and a heavy component (SO2Cl2) to a synthesis system for recycling. According to the method, the reaction temperature, the reaction pressure, the liquid phase dispersion degree and the contact time are accurately controlled, so that the reaction product generates SO2FCl with high selectivity, and the byproduct (R3N.HCl. (n-1) HF) is kept in a liquid phase, so that the reaction can be continuously carried out, and conditions are created for subsequent treatment.

A composition includes at least one of: (a) an amino acid isocyanate adduct of Formula I:and salts thereof, and (b) an amino acid epoxide adduct of Formula II:and salts thereof. R1 is a moiety of a monomer or prepolymer including two —NCO functional groups, which have reacted to form urea linkages; R2 is a moiety of a monomer or prepolymer including two glycidyl ether epoxide functional groups, which have reacted to form amino alcohol groups; R6, R7, R20 and R21 are independently (CH2)n, n is 1-6; R8, R9, R10 and R11 are independently hydrogen or CH2X; R12, R13, R14 and R15 are independently hydrogen, alkali metal cation, or X; R16 and R17 are independently hydrogen or X; R18 and R19 are independently hydrogen, SiO3 or X; and each X is independently hydrogen or a substituent. Controlled release particles, consumer products and methods including the composition are also disclosed.

A family of sulfonyl-azole compounds are described which include small molecule activators of phosphofructokinase-1, liver isoform (PFKL). The small molecule activators selectively form covalent adducts with PFKL, including particularly lysine 677 of the human PFKL. Also provided are methods for using the small molecule activators to activate PFKL, e.g., to provide increased glycolysis and / or T cell activation, to treat cancers and / or tumors, and / or to enhance fructose-1,6-bisphosphate (FBP) content in cells.

The present invention relates to a processing liquid containing an effective ingredient and water, wherein the effective ingredient contains the following component (A), the following component (B), and the following component (C), • component (A): one or more compounds selected from a specific acetylenic diol and an alkylene oxide adduct thereof, • component (B): a compound containing a copolymerization site of ethylene oxide and another alkylene oxide, and not having a carbon-carbon triple bond, • component (C): a compound containing a copolymerization site of ethylene oxide and another alkylene oxide, not having a carbon-carbon triple bond, and having a higher cloud point than the component (B) at 1 mass% aqueous solution, the content of the component (A) and the total content of the component (B) and the component (C) are in a specific range based on the total amount of the effective ingredient, and the content ratio (A) / (C) of the component (A) and the component (C) and the content ratio (B) / (C) of the component (B) and the component (C) are in a specific range in terms of mass ratio.

The present invention relates to compounds of formula (I) or pharmaceutically acceptable salts, solvates, adducts, polymorphs, isomers and derivatives thereof useful as orexin antagonists, their preparation, their use in pharmaceutical compositions, and methods of using orexin antagonists to treat or prevent diseases or conditions mediated by orexin receptor activity.

The invention discloses a method for light-controlled release of TAD in an indole-TAD adduct, and belongs to the technical field of light-responsive reversible chemical reactions. The invention provides a technical scheme of a method for releasing TAD in an indole-TAD adduct in a light-operated manner, a C-N bond in the indole-TAD adduct is activated by light to realize that the TAD-indole adduct releases TAD at a low temperature, and groups in the indole-TAD adduct are regulated and controlled to controllably release TAD under different illumination (wavelength) conditions. The method is simple to operate and mild in condition.

The application relates to the technical field of free radical detection, in particular to a high-sensitivity in-situ capture and detection method of organic free radicals based on a DIPPMPO probe and application, and the method comprises the following steps: adding a chemical probe DIPPMPO into a reaction system containing potential organic free radical precursors, so that the DIPPMPO and organic free radicals generated in a reaction process occur adduct reaction to form a DIPPMPO-free radical adduct which can be detected under liquid chromatography-mass spectrometry conditions; performing high performance liquid chromatography-quadrupole-time of flight mass spectrometry analysis on a mixed solution after the adduct reaction is completed, so that first mass spectrometry data and secondary mass spectrometry fragment information of the DIPPMPO-free radical adduct are obtained; and automatically processing the secondary mass spectrometry data, screening out parent ions with continuous neutral loss as potential DIPPMPO-free radical adduct candidate signals. The application does not need derivatization, is simple to operate, is broad-spectrum and high-efficiency, and can be applied to environmental water samples, biological fluids, chemical reaction liquids or drug metabolism systems.

The present invention relates to a water-dispersible polyurethane, a water-dispersible polyurethane composition comprising same, an adhesive composition comprising the same water-dispersible polyurethane composition, and an article having the same adhesive composition applied thereto and, more specifically, to a water-dispersible polyurethane, a water-dispersible polyurethane composition comprising same, an adhesive composition comprising the same water-dispersible polyurethane composition, and an article (for example, an electrical steel sheet laminate) having the same adhesive composition applied thereto, wherein the water-dispersible polyurethane comprises, as polymerization units, a polyol component including an anhydrosugar alcohol-alkylene oxide adduct, a polyisocyanate component, a (meth)acrylic group-containing phosphoric acid-based compound, and a hydrophilic ion group-containing diol compound, and with a combination thereof at a specific weight ratio, the water-dispersible polyurethane, when used in an adhesive composition, can provide remarkably improved adhesive strength (particularly, metal-metal adhesive strength) compared to the prior art, while also exhibiting excellent water-dispersion stability and storage stability.

The present invention relates to the production of butyl acrylate by direct esterification of acrylic acid with butanol, this reaction being catalyzed by sulfuric acid. More specifically, it relates to an improved process for producing butyl acrylate, enabling high-purity butyl acrylate to be obtained, by upgrading both the Michael adducts formed during this process, by thermal and catalytic cracking, in the form of reactants and ester which can be recycled in the process, and the final residue, by hydrothermal gasification in the form of methane and mineral salts.

The invention relates to a fireproofing composition comprising a component A and a component B. The component A comprises a liquid epoxy resin and ammonium polyphosphate. The component B comprises (i) at least one adduct B1 of at least one polyamine having at least three amine hydrogens reactive towards epoxy groups and (ii) at least one epoxide, an ether group containing aliphatic primary diamine B2 and an aliphatic or cycloaliphatic primary diamine B3. The fireproofing composition has a good adhesion to metals, shows a good fireproofing value with low mass loss after passing through the drying oven of the automotive industry and is suitable for spraying.

The invention discloses a method for detecting polysorbate 80 based on an MALDI-MS and UHPLC-Q-TOF / MS. The method comprises the following steps: taking a polysorbate 80 sample, preparing a polysorbate 80 solution by using acetonitrile, respectively carrying out MALDI-MS detection and UHPLC-Q-TOF / MS detection on the polysorbate 80 solution, and determining the content of the polysorbate 80 in the polysorbate 80 sample according to the MALDI-MS and UHPLC-Q-TOF / MS detection results. The method comprises the following steps: acquiring PS80 principal component distribution according to an MALDI-MS (Matrix-Assisted Laser Desorption Ionization-Mass Spectrometry) map: a polyoxyethylene chain delta m / z 44.0 + / -0.2 and an esterified derivative sodium adduct ion gradient peak cluster, and carrying out qualitative analysis on components of the polysorbate 80 in combination with a characteristic interval of m / z 44.0 + / -0.2 in the MALDI map; according to the retention time in the UHPLC-Q-TOF / MS detection result, identifying the monoester, diester and trace unesterified sorbitan in the polysorbate 80. According to the invention, molecular weight distribution analysis and component separation and identification of PS80 are realized.

The invention relates to the technical field of structural adhesives, in particular to an epoxy composition capable of being used for bonding a camera module support and a preparation method of the epoxy composition, and the epoxy composition comprises the following components in parts by weight: 7-10 parts of epoxy resin; 20-25 parts of flexible epoxy resin; 5-10 parts of a core-shell epoxy resin toughening agent; 20-25 parts of a compound filler; 30 to 31 parts of organic hydrazide; and 8-9 parts of a modified amine adduct. The flexible epoxy resin has at least one structural characteristic of a long-chain polyether structure and an indene structure. The compound filler comprises calcium carbonate and silicon dioxide. The epoxy composition capable of being used for bonding the camera module support has the advantages of low precipitation, low curing shrinkage, high bonding strength, low modulus and excellent falling resistance, the reliability of the camera module support structure can be remarkably improved, and the epoxy composition is suitable for application environments of various miniature high-performance camera modules.

The invention discloses a model compound-based lipid oxidation free radical specificity induction and detection method, which comprises the following steps: catalyzing a model compound (cumene / cumene hydroperoxide) or a lipid sample by using iron ions (Fe < 2 + > / Fe < 3 + >) with different valence states, and specifically inducing to generate cumene alkyl free radicals, cumene peroxide free radicals and cumene alkoxy free radicals; the method comprises the following steps: reacting a free radical trapping agent PBN with active free radicals to generate a stable PBN-free radical adduct; the adduct is separated and qualitatively identified by utilizing HPLC-TOF / MS (High Performance Liquid Chromatography-Time of Flight / Mass Spectrometry), and is accurately quantified by HPLC-UV (High The method has the advantages that three key free radicals can be specifically distinguished and quantified, the sensitivity is high, the repeatability is good, the method is suitable for free radical analysis from a model system to a complex grease sample, and a reliable analysis means is provided for research on a lipid oxidation mechanism.

An example of a nitric oxide (NO) generating system includes an NO generating formulation, having: a stable NO donor / adduct; a hydrophilic binder; and an additive. The additive is to control a rate of release of NO from the stable NO donor / adduct after the formulation is exposed to an effective amount of water, water vapor, or blue or ultraviolet (UV) light. This example NO generating system further includes an inhalation device in operative contact with the NO generating formulation.

This invention relates to the field of lubricant preparation technology and provides a method for preparing a neutralization-free modified amine ethoxylated compound lubricant. The method includes the preparation of oligomeric amides and alkoxylated adducts. An oligomer is formed by condensing a dimer acid with diethylenetriamine to form an amide. Subsequently, the oligomer is modified with ethylene oxide and propylene oxide, alkoxylating the secondary amino groups in the diethylenetriamine. The alkoxylated secondary amino groups act as an alkaline neutralizer, while the dimer acid replaces the fatty acid as a lubricant. By adjusting the ethylene oxide-propylene oxide ratio and polymerization structure, products with emulsifying functions for semi-synthetic cutting fluids and low-foaming products for fully synthetic cutting fluids can be synthesized. This reduces preparation costs and environmental pollution, and allows for the preparation of high-performance adducts suitable for different application areas. It also improves product quality and stability, resulting in a promising market.

The invention relates to a novel sulfur-olefin adduct, which has more excellent mixing performance in rubber as a rubber cross-linking agent and can provide a vulcanized rubber composite material with more excellent dynamic physical properties. The present invention also relates to a process for preparing a novel sulfur-olefin adduct comprising reacting sulfur with an olefin compound in the presence of a catalyst.

An object of the present invention is to provide a solid-phase carrier for nucleic acid synthesis, in which a nucleic acid and an adduct can be easily separated by HPLC in a case where the nucleic acid is synthesized using the solid-phase carrier for nucleic acid synthesis and the nucleic acid is cut out, a compound which serves as a linker of the solid-phase carrier, a compound which serves as a precursor of the linker, and a method for producing a nucleic acid using the solid-phase carrier. The compound according to the embodiment of the present invention is a compound represented by the following general formula (1).In the general formula (1), Ar represents a tri- to tetracyclic aromatic ring which may have a substituent, Z represents a hydrogen atom or a protective group eliminable by an acid, and R1 to R4 each independently represent a hydrogen atom, an alkyl group, or an alkoxy group.

A method of forming high quality a-BN layers. The method includes use of a precursor chemistry that is particularly suited for use in a cyclical deposition process such as in chemical vapor deposition (CVD), atomic layer deposition (ALD), and the like. In brief, new methods are described of forming boron nitride (BN) layers from precursors capable of growing amorphous BN (a-BN) films by CVD, ALD, or the like. In some cases, the precursor is or includes a borane adduct of hydrazine or a hydrazine derivative.

A process for separating one or more elements among the rare-earth elements from other metals in columns 4 to 14 of the Periodic Table of the Elements, in admixture in aqueous solution. The process uses a polyethyleneimine-CS2 adduct in the form of a salt and involves liquid / solid separation to obtain a solid predominantly containing the rare-earth elements.

The invention relates to a method for detecting in-situ free radicals in a hydroxylamine nitrate catalytic decomposition process, which comprises the following steps: 1, catalytic decomposition: catalyzing a hydroxylamine nitrate solution to decompose by using a metal supported catalyst to obtain a decomposition solution; step 2, OH <-> detection: adding an OH <-> free radical scavenger solution into the decomposition liquid obtained in the step 1 to obtain a stable OH <-> free radical adduct, namely a DMPO-OH <-> free radical adduct; step 3, NO. Detection: adding a NO. Free radical scavenger solution into the decomposition liquid obtained in the step 1 to obtain a stable NO. Free radical adduct, namely an (MGD) 2-Fe < 2 + >-NO. Free radical adduct; 4, EPR detection, wherein OH. Free radical adducts and NO. Free radical adducts obtained in the step 2 and the step 3 are detected through an electron paramagnetic resonance instrument. The detection method has the characteristics of proper magnetic field penetration depth, no background interference, continuous and repeated detection and the like.

The application provides a method for preparing low-chlorinated impurity isocyanate, and belongs to the technical field of isocyanate. The method is characterized in that two pretreatments are performed before isocyanate refining. On the one hand, naphthenes are used to extract the phosgenation reaction liquid, and insoluble substances such as urea and carbodiimide are removed before phosgene removal, thereby effectively reducing the generation of phosgene adducts. On the other hand, phosgene synthesis tail gas, phosgenation reaction tail gas and isocyanate refining tail gas are collected and mixed as stripping agents according to the target gas composition, and stripping treatment is performed in the phosgene removal stage. By controlling the source and gas composition of the stripping agent, phosgene can be quickly removed, the high-temperature polymerization of isocyanate and the generation of phosgene adducts can be inhibited, the generation of chlorinated isocyanate impurities can be reduced from the root, and the product quality is significantly improved.