1289 results about "Quaternary ammonium cation" patented technology

A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) polyalkene-substituted amine having at least one tertiary amino group; and (b) a quaternizing agent suitable for converting the tertiary amino group to a quaternary nitrogen and the use of such quaternary ammonium salt detergents in a fuel composition to reduce intake valve deposits.

A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with said acylating agent and further having a tertiary amino group; and (b) a quaternizing agent suitable for converting the tertiary amino group to a quaternary nitrogen and the use of such quaternary ammonium salt detergents in a fuel composition to reduce intake valve deposits.

The present invention relates to one kind of high activity catalyst for catalyzing and activating CO2 to react with alkane epoxide to synthesize polycarbonate. The high activity catalyst is tetradentate Schiff base metal complex with double function, i. e., it has both electrophlic center originated from the metal ion in the complex and nucleophilic center originated from the quaternary ammonium salt or quaternary phosphonium salt connected to the benzene ring in the complex. The catalyst can catalyze the reaction of CO2 and alkane epoxide effectively to prepare polycarbonate.

A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) Mannich reaction product having a tertiary amino group, said Mannich reaction product being prepared from the reaction of a hydrocarbyl-substituted phenol, an aldehyde, and amine; and (b) a quaternizing agent suitable for converting the tertiary amino group to a quaternary nitrogen and the use of such quaternary ammonium salt detergents in a fuel composition to reduce intake valve deposits.

Electrolyte solutions of soluble bifunctional redox dyes in molten salt solvent may be used to prepare electrooptic devices with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3−), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N−), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N−) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C−).

Crystalline molecular sieves are prepared using a mixture comprising an organic structure directing agent capable of forming the molecular-sieve and an N,N,N-trialkyl benzyl quaternary ammonium cation.

Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3−), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N−), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N−) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C−). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes. Some of the electrolyte solutions color to red when devices employing the solutions are powered, leading to red or neutral electrooptic devices.

An electrical double-layer capacitor showing a sleight increase of resistance when used under continuous application of high voltage and maintaining high energy residual ratio after standing for a long time includes an electrode element including a pair of electrodes disposed opposite to each other with a separator interposed therebetween, and is impregnated with a nonaqueous electrolyte solution prepared by dissolving quaternary ammonium salts into cyclic carbonates and containing impurities of 30 ppm or less of glycols, 30 ppm or less of primary alcohols and less than 20 ppm of tertiary amines. The water content may be 50 ppm or less. The quaternary ammonium salt may be triethylmethylammonium tetrafluoroborate. The cyclic carbonate may be propylene carbonate. The nonaqueous electrolyte solution may have a concentration of 0.1 to 2.5 mol / liter. The electrode may be a polarizable electrode composed of activated carbon.

Disclosed is an anion-exchange membrane which does not easily deteriorate even when used at high temperatures in a strong alkaline atmosphere. Also disclosed is a method for producing the anion-exchange membrane. The anion-exchange membrane is a microporous membrane which is composed of a water-insoluble resin and an anion-exchange resin filling the pores of the microporous membrane. The anion-exchange resin is composed of an anion-exchange resin wherein a quaternary ammonium salt group serving as an anion-exchange group is directly bonded to an aliphatic hydrocarbon chain, said anion-exchange resin being obtained by polymerizing and crosslinking a monomer composition which contains a crosslinking agent and a monomer component including a diallyl ammonium salt.

A composition useful as a biodegradable corrosion inhibitor and a biocide that comprises a polymeric quaternary ammonium salt prepared by a reaction of a polyepihalohydrin with a tertiary amine, wherein the polyepihalohydrin is prepared by a polymerization reaction of an epihalohydrin in the presence of a monomeric poly alcohol and delivered to the corrosion system in a solvent carrier.

The object is to provide a nonaqueous-electrolyte battery having high charge / discharge efficiency and excellent high-rate performance. This subject is accomplished by using a nonaqueous electrolyte which comprises an organic solvent and a lithium salt dissolved therein and is characterized by containing at least one quaternary ammonium salt in an amount of 0.06 mol / L or larger and 0.5 mol / L or smaller. This effect is thought to be attributable to the following mechanism: in a relatively early stage (stage in which the negative-electrode potential is relatively noble) in a first charge step, a satisfactory protective coating film is formed on the negative electrode by the action of the quaternary ammonium salt and, hence, the organic solvent employed in the nonaqueous electrolyte is inhibited from decomposing.

The invention relates to a water-soluble chitosan quaternary ammonium salt antibiotic finishing agent. The invention is characterized in that the antibiotic finishing agent is names as O-methacrylamide-N-hydroxypropyl alkyl dimethyl ammonium chloride chitosan and the concrete structural formula is as follows. The preparation thereof includes that: alkyl dimethyl tertiary amide and epichlorohydrin are taken as raw materials to synthesize 2, 3-epoxy alkyl dimethyl ammonium chloride, then the 2, 3-epoxy alkyl dimethyl ammonium chloride is introduce onto the ammonium group of chitosan, so as to obtain N-hydroxypropyl alkyl dimethyl ammonium chloride chitosan HDCC, and then crosslinking is carried out on the HDCC and hydroxymethyl acrylamide is carried out, thus obtaining NMA-HDCC. The quaternary ammonium salt antibiotic finishing agent contains water-soluble group and fibrous reactivity group and has good water solubility, the bacterial inhibition rate of finished cotton fabrics is close to 100%, and the finishing agent can be combined with cellulose fiber by covalent bond and is wash-resistant; and cost is low, raw material is environmental friendly, environmental pollution is less, thus having industrialization application prospect.

The invention relates to a composite oil displacement agent containing a polymer and a cationic / anionic surfactant, and an oil displacement method, and mainly solves a problem of bad oil displacement efficiency of composite oil displacement agents used in the prior art. The composite oil displacement agent containing a polymer and a cationic / anionic surfactant includes the cationic / anionic surfactant, the polymer and water; the cationic / anionic surfactant comprises an anionic surfactant and a cationic surfactant according to a molar ratio of (1-100):1; the anionic surfactant is anyone of sulfonate, carboxylate and phosphate; the cationic surfactant is a quaternary ammonium salt or quaternary ammonium alkali; the polymer is modified polyacrylamide obtained by copolymerizing two monomers of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, and a molar ratio of the two monomers in the modified polyacrylamide is (1-4):1. The composite oil displacement agent solves the problem and can be used for enhanced oil displacement production of high temperature and low salinity oil reservoirs.

The invention relates to a preparation method for a chitosan natural polymer modified crude oil desalting demulsifier. The method comprises the following steps: 1) modifying polyethylene glycol monomethyl ether by halogenating; 2) preparing glycidyl dimethyl alkyl ammonium chloride; 3) preparing quaternized carboxy alkyl chitosan; 4) causing the modified polyethylene glycol monomethyl ether to react with the quaternized carboxy alkyl chitosan, thereby obtaining a target product, polyethylene glycol monomethyl ether grafted quaternized carboxy alkyl chitosan. According to the invention, the chitosan natural high-molecular compound is taken as the raw material and has the advantages of wide resource, naturality, non-toxicity, sustainability, excellent biological compatibility of products, degradability, and the like. The demulsifier prepared according to the invention has excellent demulsification dewatering effect; the molecule of the demulsifier contains a large amount of carboxy alkyl groups and quaternary ammonium salt groups and the electronegative ions, including metal cation, naphthene acid radicals, and surfaces are electronegative grains and have strong combining capacity, so that the demulsifier has the capacities of demulsifying while removing oil-soluble salt.

The invention relates to a preparation method of a polyether-grafted chitosan derivative crude oil desalting demulsifier. The preparation method comprises the following specific steps: firstly, performing formylation modification on polyethylene glycol monoethylether; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternarization carboxyalkyl chitosan; fourthly, enabling formylation modified polyethylene glycol monoethylether to react with carboxy alkyl chitosan to obtain the polyether-grafted chitosan derivative crude oil desalting demulsifier. The polyether-grafted chitosan derivative crude oil desalting demulsifier disclosed by the invention is prepared by taking chitosannatural polymeric compounds as raw materials, and has the advantages of wide sources, naturalness, no toxicity, sustainability, good biocompatibility of a product, degradability and the like. The prepared demulsifier is good in demulsifying and dehydrating effect; meanwhile, a demulsifying molecule contains a large amount of carboxyalkyl groups and quaternary ammonium salt groups which have strong combining capacity to metal cation, ions with negative electricity such as naphthenic acid radicals as well as particles of which the surfaces are electronegative, so the polyether-grafted chitosan derivative crude oil desalting demulsifier has capacity of removing oil-soluble salts while demulsifying.

A personal care composition is provided with a silicone compound and being aesthetically modified for improved skinfeel with a quaternary ammonium salt, the salt having a structure AB, wherein A is a cationic charged component, B is an anionic charged component, and A has one quaternized nitrogen atom, at least two hydroxyl groups and a molecular weight no higher than about 250.

The invention relates to a preparation method of an efficient crude oil desalting demulsifier. The preparation method comprises the following specific steps: (1) performing isocyanic acid esterification modification on methoxy polyethylene glycol; (2) preparing glycidyl dimethyl alkylammonium chloride; (3) preparing quaternized carboxyalkyl chitosan; (4) modifying the methoxy polyethylene glycol and the quaternized carboxyalkyl chitosan for reaction to obtain a target product, namely, methoxy polyethylene glycol-grafted quaternized carboxyalkyl chitosan. By taking chitosan type natural macromolecular compounds as raw materials, the efficient crude oil desalting demulsifier has many advantages of wide availability, nature, nontoxicity, sustainability, high biocompatibility, degradability and the like. The prepared demulsifier is good in demulsifying and dehydration effect; meanwhile, molecules of the demulsifier contain a large quantity of carboxy alkyl groups and quaternary ammonium salt groups, so that the demulsifier is extremely high in combination capacity for negatively charged ions such as metal cations and naphthenic acid radicals, and particles with electronegativity on the surfaces, and can remove oil-soluble salt during dehumidification.

The invention discloses a preparation method of fewer-layer graphene, which comprises the following steps of: putting graphite into solution containing a tetraalkyl-substituted quaternary ammonium cation and OH- for ultrasonic treatment in combination with a liquid phase intercalation technology and a microwave irradiation technology, so that the tetraalkyl-substituted quaternary ammonium cation is inserted into the middle of a graphite layer to form an intercalation layer, and the spacing of the graphite layer is increased; then carrying out microwave irradiation on the treated graphite, so that the graphite intercalation layer is decomposed to generate a large quantity of gas and further increase the spacing of the graphite layer; successively dispersing the treated graphite in a low-polarity organic solvent for ultrasonic treatment, so that the graphite is stripped to generate the grapheme; and finally carrying out centrifugal treatment to obtain upper-layer liquid after treatment, i.e. fewer-layer graphene dispersion liquid. The preparation method has the advantages of simplicity in operation, short time consumption, low cost, high grapheme yield, good repeatability and easy realization of industrialized mass production; and the fewer-layer graphene prepared by the preparation method is below 10 in quantity of layers and has the advantages of fewer defects, fewer oxygen-contained groups and high conductivity.

The invention relates to a synthesis method of a crude oil desalting demulsifying agent. The method specifically includes the steps of firstly, conducting p-nitrophenyl ester modification on methoxypolyethylene glycol; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternized carboxy alkyl chitosan; fourthly, making the modified methoxypolyethylene glycol react with quaternized carboxy alkyl chitosan to obtain a product, namely polyethylene glycol questin grafted quaternized carboxy alkyl chitosan. A chitosan type natural high-molecular compound serves as the raw material and has the advantages of being wide in resource, natural, free of toxin, sustainable, good in product biocompatibility, degradable and the like; The prepared demulsifying agent is good in demulsifying dewatering effect; meanwhile, due to the fact that lots of carboxy alkyl groups and quaternary ammonium salt groups are contained in demulsifying agent molecules and have strong binding capacity with metal cations, naphthenic acid radicals and other ions with negative charges and particles with surface electronegativity, the oil-soluble salt removing capacity is achieved during demulsifying.

The invention relates to a method for preparing comb-shaped polymer crude oil desalting demulsifier. The method comprises the following steps: (1) performing acrylatioed modification on methoxy polyethylene glycol; (2) preparing glycidyl dimethyl alkyl ammonium chloride; (3) preparing quaternized carboxyalkyl chitosan; (4) reacting modified methoxy polyethylene glycol with quaternized carboxyalkyl chitosan to obtain the target product demulsifier. The demulsifier is prepared by using chitosan naturalpolymer compounds as raw materials, and has the advantages of wide source, nature, no toxicity, sustainability, good product biocompatibility, degradability and the like. The prepared demulsifier has good demulsification and dehydration effect since the molecular structure is a comb-shaped polymer formed by simultaneously grafting a plurality of linear branched chains on a main chain, and has a strong binding capability on metal cations, naphthenate radicals and other negatively charged ions and particles which are electronegative on surfaces since a great amount of carboxyalkyl groups and quaternary ammonium salt groups on the molecules. Therefore, the demulsifier has capabilities of demulsifying and removing oil-soluble salt.

The invention relates to a preparation method of a polyelectrolyte-type crude oil-desalting demulsifier. The preparation method comprises the following specific steps: (1) performing amination modification on methoxypolyethylene glycol; (2) preparing glycidyl dimethyl alkyl ammonium chloride; (3) preparing quaternized carboxyalkyl chitosan; (4) carrying out a reaction between the modified methoxypolyethylene glycol and the quaternized carboxyalkyl chitosan to obtain a target product methoxypolyethylene glycol-grafted quaternized carboxyalkyl chitosan. The polyelectrolyte-type crude oil-desalting demulsifier takes a natural macromolecule chitosan compound as a raw material, and has the advantages of wide sources, naturalness, non-toxicity, sustainability, good product biocompatibility, biodegradability and the like. The prepared demulsifier has good demulsifying and dehydrating effects; a demulsifier molecule contains a large number of carboxyalkyl groups and quaternary ammonium groups, which have very strong capacity of bonding metal cations, negatively-charged ions such as naphthenic acid radicals, and particles with negative charges on the surfaces, so that besides the demulsifying capability, the demulsifier also has the capability of removing oil-soluble salts.

The invention discloses a quaternary ammonium salt modified organosilicon polyurethane ocean antifouling paint, the structure is shown as the formula (1); in the formula, an organosilicon soft segment containing quaternary ammonium salt side chain is an isocyanate hard segment; the quaternary ammonium salt modified organosilicon polyurethane ocean antifouling paint is prepared by the following steps: preparing 2,4,6-tri(3- chlorine propyl group)-2,4,6- trimethyl-ring trisiloxane; preparing 1,3-bi(3-(1-methoxy group-2-hydroxy propyl group) propyl group)-tetramethyl disiloxane; preparing 1,3-bi(3-(1-methoxy group-2-hydroxy propyl group) propyl group)-tetramethyl disiloxane; preparing dihydroxy ended chloropropylated polysiloxane; preparing polysiloxane compound containing the quaternary ammonium salt and hydroxyl; mixing the compound with the isocyanate, and adding gamma-aminopropyl triethoxy silane for chain extension to obtain a prepolymer, and the prepolymer being crosslinked and condensed in air. In the invention, the double effect of low surface energy and poison killing are achieved, so as to suppress the adsorption of marine organisms and kill bacteria adsorbed on the surface of a ship body through the quaternary ammonium salt.

The present invention is directed to a process for producing crystalline zeolites from a reaction mixture containing an N,N,N-trialkyl benzyl quaternary ammonium cation as a structure directing agent.

Selected quaternary ammonium salts containing fluoroalkyl, preferably perfluoroalkyl, groups that are stable to bases are described. They are useful as phase transfer reaction catalysts, especially in basic media.

The invention provides tetradentate schiff base metal complexes with formula (I) and metal porphyrin complexes with formula (II). The active centers of the two complexes are non-toxic zinc, magnesium, manganese or iron. The invention also provides a method for preparing polycarbonate by using the complexes as a catalyzer. The ligand of the two complexes contain at least one or more quaternary ammonium salt or strong sterically hindered organic base group, so the two complexes have higher catalytic activity, meanwhile the complexes have non-toxic active center metal like zinc, magnesium, manganese or iron, can effectively prevent the problem of the exceeding content of toxic metals in polycarbonate and ensure that the product does not contain toxic metal residues.

A single-compartment reversible mirror device having a solution of aprotic molten salt, at least one soluble metal-containing species comprising metal capable of being electrodeposited, and at least one anodic compound capable of being oxidized was prepared. The aprotic molten salt is liquid at room temperature and includes lithium and / or quaternary ammonium cations, and anions selected from trifluoromethylsulfonate (CF3SO3−), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N−), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N−) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C−). A method for preparing substantially pure molten salts is also described.

This invention is to provide a compound for antagonizing CCR5, said compound being represented by the formula: wherein R1 is an optionally substituted phenyl or an optionally substituted thienyl; Y is -CH2-, -S- or -O-; and R2, R3 and R4 are independently an optionally substituted aliphatic hydrocarbon group or an optionally substituted alicyclic heterocyclic ring group, and being effective for the prevention and treatment of infectious disease of HIV.

This invention relates to a method for preparing quaternary ammonium salt. The method comprises: reacting C12-C18 alkyl dimethyl tertiary amine and alkylation reagent at 50-105 deg.C in water to obtain the product. The alkylation reagent is C1-C8 halogenated hydrocarbon. The method has the same effect as conventional method performed in low-carbon alcohol, and has such advantages as low cost and reduced environmental pollution of the solvent.