71 results about "Iminium" patented technology

Fluorescent biosensor molecules, fluorescent biosensors and systems, as well as methods of making and using these biosensor molecules and systems are described. Embodiments of these biosensor molecules exhibit fluorescence emission at wavelengths greater than about 650 nm. Typical biosensor molecules include a fluorophore that includes an iminium ion, a linker moiety that includes a group that is an anilinic type of relationship to the fluorophore and a boronate substrate recognition/binding moiety, which binds glucose. The fluorescence molecules modulated by the presence or absence of polyhydroxylated analytes such as glucose. This property of these molecules of the invention, as well as their ability to emit fluorescent light at greater than about 650 nm, renders these biosensor molecules particularly well-suited for detecting and measuring in-vivo glucose concentrations.

The invention relates to an ion liquid electrolyte containing bi-(fluorosulfonic acid)imine ion and iodine ion and application thereof to a dye sensitized solar battery. The electrolyte is a composition prepared from the bi-(fluorosulfonic acid)imine ion([N(SO2F)2]<->), iodine ion liquid and simple substance iodine which are evenly mixed according to the blending ratio, or the bi-(fluorosulfonic acid)imine ion([N(SO2F)2]<->), the iodine ion liquid, the simple substance iodine and one or more than one of other ion liquid, additive, curing agent and solvent which are evenly mixed according to the blending ratio. When the ion liquid electrolyte is applied to the dye sensitized solar battery, a high-efficiency thermal stability device with photoelectric power conversion efficiency of 7.5 percent is obtained, thereby the ion liquid electrolyte containing TCB negative ion is not used.

This invention relates to a process of producing organic catalysts that may comprise iminium or oxaziridinium moieties, cleaning compositions comprising such catalysts; and methods of using such catalysts and cleaning products containing such catalysts.

A method for preparing ammonium tetrakis(pentafluorophenyl)borate salt comprising reacting a secondary amine with an aldehyde to form an iminium ion; hydrogenating the iminium ion by reaction with a reducing agent to form a tertiary amine; reacting the tertiary amine with a mineral acid to form an amine salt; and reacting the amine salt with K[B(C₆F₅)₄], Li[B(C₆F₅)₄], or combinations thereof to form an ammonium tetrakis(pentafluorophenyl)borate salt, wherein the secondary amine is derived from a non-animal source and the aldehyde has seven or more carbon atoms; wherein the ammonium tetrakis(pentafluorophenyl)borate salt is characterized by a solubility at 25° C. in hexane, cyclohexane or methylcyclohexane of at least 10 weight percent; and wherein the tertiary amine has a molecular weight of at least 450 g/mole is provided.

The invention relates to a new fluoroalkyl sulfonyl imide and fluoroalkyl sulfonyl imides thereof, a preparation method and usage. The fluoroalkyl sulfonyl imide and fluoroalkyl sulfonyl imides are prepared by taking fluoroalkyl sulfonyl chloride or fluoroalkyl vikane and can be high-efficiently used in ion exchange reaction.

This invention relates to organic catalysts comprising iminium or oxaziridinium moieties, cleaning compositions comprising such catalysts; and processes for making and using such catalysts and cleaning products.

The invention relates to a composite catalyst for preparing a polyether-polylactide-aliphatic polycarbonate ternary block copolymer and an application of the composite catalyst. The composite catalyst comprises a metal Salen catalyst and a cocatalyst in a molar ratio of 1: (0.5-2), wherein the cocatalyst is bis-(triphenylphosphine)iminium chloride, 4-dimethylaminopyridine or 2,6-lutidine. The composite catalyst has the following beneficial effects: 1, The catalysis effect of the composite catalyst is good, the catalysis efficiency is high, the obtained ternary copolymer has larger number-average molecular weight and narrow molecular weight distribution; 2, composition of a polyether segment, a polylactide segment and a PPC (poly(propylene carbonate)) segment in the copolymer can be effectively controlled through regulation of step reaction time and monomer ratio, the glass transition temperature of the copolymer is 2-42 DEG C, the elongation at break is 55%-331%, and the tensile strength is 6-39 MPa.

The invention discloses a process for synthesizing 3,4-difluorobenzonitrile. According to the process, 3,4-difluorobenzonitrile with the purity of over 99% is obtained through taking 3,4-dichlorobenzonitrile as a raw material, taking potassium fluoride as a fluorination reagent, taking 1,3-dimethyl-2-imidazolidinone as a reaction solvent, taking bis-(N-bis(dimethylamino)methylene)-iminium chloride as a catalyst, enabling reactants to react for 2-3 hours at the temperature of 130-150 DEG C and react for 5-6 hours at the temperature of 180-200 DEG C, then ending reaction, filtering a reaction solution and then rectifying under reduced pressure, and the yield can reach 85%. Rectification mother liquor (containing the catalyst) is mechanically applied to next-batch reaction directly. According to the process disclosed by the invention, the raw material is easy to obtain, the reaction conditions are mild, the reaction time is short, the operation is simple, the yield is high, the reaction solvent (containing the catalyst) can be repeatedly applied mechanically, the cost is low, and the emission of waste gases, waste water and waste residues is little, so that the process is applicable to industrial production.

A fiber useful in the absorption of metal ions from aqueous solutions, the fiber comprising a polyolefin backbone having a diameter of at least 1 micron and having covalently appended on its surface halogen atoms and vinyl-addition polymeric grafts functionalized with metal-binding groups, such as at least one functional group selected from carboxylate, keto, aldo, amino, imino, nitrile, amido, oxime, amidoxime, imide dioxime, and hydroxamate groups. The vinyl-addition polymeric grafts may also be further functionalized with hydrophilic groups different from the metal-binding groups, wherein the hydrophilic groups may be selected from carboxylate, sulfone, sulfonate, phosphonate, alkylammonium, iminium, amide, pyrrolidone, and polyalkyleneglycol groups. Also described are methods for producing the functionalized fibers, and methods for using the functionalized fiber, particularly in extracting metal ions from metal-containing solutions.

This invention relates to novel iminium onium salts, which may be in the form of ionic liquids, and a process for producing electron deficient olefins, such as 2-cyanoacrylates, using such an iminium onium salt, for instance in the form of an ionic liquid.

The invention discloses a method for preparing enamine derivatives, which comprises the steps that: 1) the iminium salts with a molecular structural formula as III and the metal salt comprising active methylene with a molecular structural formula as II are selected as raw materials, and the molar ratio of iminium salts to metal salts comprising active methylene ranges from 1 : 1 to 3 : 1 ; 2) under a temperature of -50 DEG C to 100 DEG C, the iminium salts are gradually added into the organic solvent containing the metal salts comprising active methylene, to carry out a react for 0 to 40 hours with heat preservation under minus 50DEG C to 100DEG C; the solution of enamine derivatives with a molecular structural formula as I is obtained. The method for preparing enamine derivatives has simple process with high yield and mild reactive condition.

A photoresist composition. The composition has the following: (a) one or more resin binders that include one or more acid sensitive groups and that are substantially free of phenolic groups protected by acetal or ketal groups; (b) one or more photo acid generators, that, upon exposure to a source of high energy, decompose and generate a photoacid strong enough to remove the one or more acid sensitive groups; (c) one or more ionic non-photosensitive additives including an iminium salt; and (d) one or more solvents. There is also a process for patterning relief structures on a substrate employing the photoresist composition.

The present invention provides a method for the synthesis of β²-amino acids. The method also provides methods yielding α-substituted β-amino aldehydes and β-substituted γ-amino alcohols. The present method according to this invention allows for increased yield and easier purification using minimal chromatography or crystallization. The methods described herein are based on an aldehyde aminomethylation which involves a Mannich reaction between an aldehyde and a formaldehyde-derived N,O-acetal (iminium precursor) and a catalyst, such as, for example, L-proline or a pyrrolidine. The invention allows for large scale, commercial preparation of β²-amino acids.

The invention discloses a method for preparing polycarbonate through three-component copolymerization of carbon dioxide, epoxy cyclohexane and alpha-epoxy pinane, and belongs to the macromolecular material field. A catalyst system is formed by a quadridentate Schiff base metal complex SalenCr<III> Cl as a main catalyst and bis(triphenylphosphine)iminium chloride or 3-butylammonium chloride or 1-methyl imidazole or 4-dimethylamino pyridine and the like as a catalyst promoter, and under a condition of the carbon dioxide pressure of 2.0-5.5 MPa, the polycarbonate material is prepared by copolymerization of epoxy cyclohexane, alpha-epoxy pinane and carbon dioxide. The method makes full use of abundant forest resources in China, and is simple in process and convenient to operate; and the obtained polymer not only has good biodegradation and biocompatibility, but also has the advantages of good thermal stability, large molecular weight, narrow molecular weight distribution and the like, and can be widely used in biology, medicines, agriculture and other industries.

A method for producing a reaction product comprising an ester-functional silane, the method comprising: i) reacting a composition comprising: a) a haloorganosilane, b) a metal salt of a carboxy-functional compound, c) a phase transfer catalyst comprising a bicyclic amidine, an iminium compound, or a mixture thereof, provided that the iminium compound is not an acyclic guanidinium compound or pyridinium compound, and d) a co-catalyst, provided that the co-catalyst is optional when the phase transfer catalyst comprises the iminium compound.

The invention relates to a mixture of dried grain of alkali and ammonium sulfite black straw liquor as well as relevant preparation method. The invention is mainly a product by mixing alkali method black straw liquor with ammonium sulfite black straw liquor before performing condensation and drying, as well as relevant products that are produced. Evaporating and condensing black liquor with the production technique needs less energy consumption, and main dried grains include sodium lignin and ammonium lignin sulfonate as well as fulvic acid like substances. Therefore, the invention has broad application and can be used as raw materials for many products with high economic value. Moreover, the invention can also be utilized in preparation of an excellent water reducer, or be added with some crosslinkers to prepare lignin sand-fixing solvent.

Solar cells are provided which comprise an electron transporting layer and a light sensitizing layer of perovskite disposed over the surface of the electron transporting layer. The perovskite may have a formula selected from the group consisting of A₂MX₆, Z₂MX₆ or YMX₆, wherein A is an alkali metal, M is a metal or a metalloid, X is a halide, Z is selected from the group consisting of a primary ammonium, an iminium, a secondary ammonium, a tertiary ammonium, and a quaternary ammonium, and Y has formula M_b(L)₃, wherein M_b is a transition metal in the 2+ oxidation state L is an N—N neutral chelating ligand. Methods of making the solar cells are also provided, including methods based on electrospray deposition.