446 results about "Calixarene" patented technology

The invention discloses a calixarene additive capable of simultaneously and optionally reducing benzo (a) pyrene and phenol contents in cigarette smoke and an application method thereof. In the invention, deep-cavity P-(1-(4-hydroxyphenyl)-1-methylethyl) calyx (8) aromatic compound is selected as the additive material, and the compound is added in a common and conventional filter tip which bettercan be suitable for a compound filter, with the additive amount being arbitrarily adjusted according to the needs. By using the molecular recognition function and the cavity size select effect of thecalyx (8) aromatic compound, the additive can be optionally combined with the benzo (a) pyrene and phenol molecules in the cigarette smoke. When the additive is added into the filler with the amount of 10mg/per cigarette, 33.2 percent of benzo (a) pyrene content and 41.4 percent of phenol content in the cigarette smoke can be simultaneously reduced, and other chemical compositions in the smoke arebasically not influenced, thus achieving the goal of selective harm reduction.

The invention involves a process for separating actinides and lanthanides by liquid-liquid extraction by means of calixarenes.These calixarenes have the formula:with R1 and R2 being alkyl groups or o-nitrophenoxy alkyl groups and R3 and R4 being aryl groups,and they are used in an organic liquid phase containing an organic diluent. The diluent and the calixarene concentration of the organic phase are chosen so as to ensure an enrichment of the organic phase with the actinide(s) and/or lanthanide(s) to be separated from an aqueous acid or saline solution.

The invention discloses coumarin-oxacalix[3]arene fluorescent reagents as well as a preparation method and application thereof, and belongs to the fields of organic synthesis and analytical chemistry. The invention respectively synthesizes two coumarin-oxacalix[3]arene fluorescent reagents: chemical name a: 7,15,23-tertiary butyl-25,26,27-tri{1-[N-(7-coumarin oxyethyl)-1,2,3-triazole]-4-methoxy}-3,11,19-trioxacalix[3]arene; b: 7,15,23-triethoxycarbonyl -25,26,27-tri{1-[N-(7-coumarin oxyethyl)-1,2,3-triazole]-4-methoxy}-3,11,19-trioxacalix[3]arene. Meanwhile, the invention discloses a synthesis method and process conditions. According to the invention, the two coumarin-oxacalix[3]arene fluorescent reagents, in detecting ferric ions, have characteristics of high selectivity and high sensitivity; the fluorescent reagents are applicable to qualitative and quantitative analysis.

This invention relates to a process for stabilizing a phenolic resin containing a mixture of linear phenolic resins and calixarenes and a demulsifier composition comprising the stabilized phenolic resins prepared from the process. The process comprises contacting the phenolic resin with an alkylene carbonate, in the presence of a base catalyst, to at least partially alkoxylate the phenolic hydroxyl groups of the calixarenes. This process forms a stabilized phenolic resin with an increased solubility in a hydrocarbon solvent.

The invention discloses a calixarene constructed supramolecular polymer material. The chemical formula of a repeat unit of the material is C210H206N72O64S8; and the material consists of ethyl-bridged p-sulfonated calix[4]arene, cucurbit[8]uril and hexyl-bridged methyl viologen, wherein the ethyl-bridged p-sulfonated calix[4]arene and the cucurbit[8]uril serve as a large-ring host, the hexyl-bridged methyl viologen serves as a guest, and the supramolecular polymer with a host-guest inclusion structure is constructed through host-guest bonding. The invention has the advantages that: by the recognition advantage of the p-sulfonated calix[4]arene and the cucurbit[8]uril on specific groups of the viologen, a fibrous polymer material is prepared by a simple and feasible solution mixing method, and the method is easy to implement, high in yield, convenient and effective; and by a chemical reduction means of adding hydrazine hydrate, the polymer material can be well reduced and depolymerized,and the supramolecular polymer material has wide application prospect in the field of materials.

The invention relates to a calixarene derivative and a metal complex thereof, and a preparation method and application of the calixarene derivative and the metal complex thereof. The calixarene derivative is quaternary ammonium salt calix [4] arene [H4L](PF6)4, wherein H4L is 5,11,17,23-tetra(trimethyl quaternary ammonium salt) calix [4] arene; and the metal complex containing the quaternary ammonium salt calix [4] arene is [Mn(III)L(O2)(H2O)](PF6)2. The calixarene derivative [H4L](PF6)4 disclosed by the invention not only can be used for separation, phase-transfer catalysis, molecule exchange and the like of neutral organic matters but also can be used for reacting with metal salts to generate the metal complex so that the calixarene derivative is applied more widely. The Calix [4] arene Mn(III) super-oxygen complex [Mn(III)L(O2)(H2O)](PF6)2 can be used for epoxidation for catalyzing olefin. The reaction condition is moderate. The conversion rate is higher; furthermore, the selectivity is exclusive.

A mixed extractant solvent including calix[4]arene-bis-(tert-octylbenzo)-crown-6 (“BOBCalixC6”), 4′,4′,(5′)-di-(t-butyldicyclo-hexano)-18-crown-6 (“DtBu18C6”), and at least one modifier dissolved in a diluent. The mixed extractant solvent may be used to remove cesium and strontium from an acidic solution. The DtBu18C6 may be present from approximately 0.01 M to approximately 0.4M, such as from approximately 0.086 M to approximately 0.108 M. The modifier may be 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol (“Cs-7SB”) and may be present from approximately 0.01M to approximately 0.8M. In one embodiment, the mixed extractant solvent includes approximately 0.15M DtBu18C6, approximately 0.007M BOBCalixC6, and approximately 0.75M Cs-7SB modifier dissolved in an isoparaffinic hydrocarbon diluent. The mixed extractant solvent may form an organic phase in an extraction system that also includes an aqueous phase. Methods of extracting cesium and strontium as well as strontium alone are also disclosed.

The invention relates to a preparation method of a nano fiber affinity membrane for absorbing and separating La3+. The preparation method comprises following steps: making a polymer solution go through electrostatic spinning to obtain a compound nano fiber membrane, processing the fiber membrane to obtain a porous, micro-nanostructure and high specific surface area nano fiber membrane, subjecting the nano fiber membrane to an amination treatment to obtain a porous, micro-nanostructure and high specific surface area aminated nano fiber membrane, subjecting the aminated nano fiber membrane to a treatment with a calixarene derivative solution and obtaining the product. The affinity membrane prepared according to the method mentioned above has a selective absorption property on La3+, is capable of regenerating, and the absorption effect is not affected after the membrane has been recycled for several times. The affinity membrane can be used in the absorption, extraction and separation technologies in mineral smelting and water processing industries.

A method for enhancing the dispersibility of calixarene-stabilized nanoparticles, which can be assembled into ordered, planar arrays of monoparticulate thickness, ring-like assemblies of discrete particle count, and other configurations.

The invention relates to the technical fields of deep processing of nonmetal ores and application of high polymer materials, in particular to an attapulgite/urea resin composite adhesive with a low formaldehyde releasing rate, and a preparation method of the composite adhesive. According to the preparation method, isocyanate is firstly adopted to graft a calixarene molecule onto the surface of nano attapulgite to prepare an inorganic-organic composite adsorbent; a nano calixarene adsorbent is added into the urea resin at the temperature of 70-85 DEG C, mixing at the thermal-insulation situation for reaction are performed for 15-30 min, the pH value of the system is adjusted to 7.5-9.5, and the calixarene modified attapulgite/urea resin composite adhesive is prepared. By adding the attapulgite adsorbent, a synergy adsorption effect on the free formaldehyde in the urea resin is realized, so that the adhesion strength of the composite adhesive is further improved.

A process for preparing the chromatographic bonded immobile phase includes preparing gamma-epoxypropoxypropyl silica gel as precursor, reaction of sodium hydride calixarene in anhyrous toluene at 70-80 deg.C to obtain calixarene phenol sodium salt, carrying it on said precursor under the action of quaternary ammonium salt, and reaction in nitrogen or argon gas at 110-120 deg.c. Its advantages aresimple process, low cost and high acid stability.

A water dispersible colloidal system in the form of generally spherical matrix type particles and of sizes typically in the range of from 50 to 500 nm, called nanoparticles, and a process for the preparation of such systems. The system is characterized in that the nanoparticles comprise at least one amphiphilically modified calixarene. The water dispersion contains at least one active component such as a cosmetic, a pharmaceutical compound or other biologically active substances, foods, beverages, etc. enclosed within the nanoparticles, in the outer aqueous phase, or in both. The systems show outstanding properties, especially long-life stability even at elevated la temperatures.

A catalyst system useful for polymerizing olefins is disclosed. The catalyst system includes an organometallic complex that incorporates a Group 3 to 10 transition metal and a hydroxyl-depleted calixarene ligand that is chelated to the metal. Molecular modeling studies reveal that organometallic complexes incorporating such calixarene ligands, when combined with an activator such as MAO, should actively polymerize olefins.

A toner including a mother toner comprising a binder resin and a calixarene having a halogen group, and a charge controlling agent having a halogen group that is present on a surface of the mother toner. The ratio of halogen ion to carbon ion on a surface of the toner is from 0.01 to 0.5, when determined by TOF-SIMS. The toner can be prepared by preparing a first liquid by dissolving or dispersing toner components including a calixarene having a halogen group and a binder resin and/or a precursor of the binder resin in an organic solvent; preparing a second liquid by emulsifying or dispersing the first liquid in an aqueous medium; removing the organic solvent from the second liquid; preparing a third liquid by washing the second liquid from which the organic solvent is removed; and adding a charge controlling agent having a halogen group to the third liquid.

There is provided a method for a selective assay of component, particularly cholesterol, in very low-density lipoprotein (VLDL) which is one of serum lipoproteins.

In the assay, an enzymatic reaction of lipoprotein lipase (LPL) or cholesterol esterase (CE) which well reacts with high-density lipoprotein (HDL) and VLDL is carried out at least in the presence of calixarene or a salt thereof. It is also carried out in the presence of one or more substance(s) selected from albumin and basic amino acids in addition to calixarene or a salt thereof.

The present invention discloses a novel class of calixarene crown ether bond-type silicon-based adsorption materials and a preparation method thereof, belonging to the technical field of metal ion adsorption material preparation. The adsorbent materials have the structure shown in the formula below: wherein, R is H or; and X = 2-12. During the preparation of the adsorbent materials, firstly modifying di(2-propoxy)calix [4] arene-crown-6 to bring reactive amino group to the molecular structure; then a preparing silicon-based precursor containing haloalkyl; and finally reacting amino-substituted di(2-propoxy)calix [4] arene-crown-6 with the silicon-based precursor containing haloalkyl, so that the calixarene crown ether groups are bonded on the silicon carrier to get a novel class of calixarene crown ether bond-type silicon-based adsorption materials. The method provided by the invention is simple in operation; and the obtained adsorption materials have excellent thermal stability and chemical stability, high reusability, and large adsorption capacity for cesium ions.

The invention discloses a calixarene crown ether bonded silica stationary phase. Gamma-(2,3-epoxypropoxy)propyltrimethoxy silane is used as a coupling agent which reacts with silica under the protection of catalyst and inert gas to prepare gamma-glycidoxy propyl-bonded silica; and the gamma-glycidoxy propyl-bonded silica reacts with p-tert-butylcalix[4]-1,2-crown-4 sodium phenolate in strong alkaline conditions and under the protection of catalyst and inert gas to obtain the calixarene crown ether bonded silica gel stationary phase. Due to large bonding quantity, stable performance and better separation selectivity, the stationary phase disclosed by the invention not only has the traditional ODS (octadecylsilane bonded silica) reversed-phase chromatography performance, but also can provide sites for various actions such as complexing action, hydrogen bonding and the like; and the stationary phase has remarkable advantages in separating some specific substances which are difficult to separate (such as polycyclic aromatic hydrocarbon, phenol, phenylenediamine, phenylamine and benzoic acid compounds).

The invention relates to an alanine substituted calix[4]arene bonded silica stationary phase and a preparation method and application thereof. According to the invention, gamma-aminopropyl trimethoxy silane is used as a coupling agent and reacts with specially-produced silica gel under the protection of triethylamine and inert gas so as to prepare gamma-aminopropyl trimethoxy bonded silica which reacts with 25,27-di(L-alanine methyl ester-N-carbonyl-methoxy)-26,28-dihydroxy-p-tert-bytyl-calix[4]arene under the protection of triethylamine and inert gas so as to prepare the alanine substituted calix[4]arene bonded silica stationary phase. The alanine substituted calix[4]arene bonded silica stationary phase prepared in the invention has the advantages of high bonded amount, stable performance and better separation selectivity, has same performance as traditional ODS reversed phase chromatography does, provides a plurality of action sites for inclusion, complexation, hydrogen bonding, etc. and is advantageous in separation of specific substances difficult to separate.

A calixarene bisphosphite composition for use as a ligand in a transition metal-ligand complex catalyst and in a complex catalyst precursor. The ligand is especially useful in catalysts and catalyst precursors for hydroformylation processes wherein a raffinate stream comprising a mixture of alpha, beta, and iso-olefinic isomers is hydroformylated in the presence of carbon monoxide, hydrogen, and the transition metal-ligand complex catalyst to form a mixture of linear and branched aldehyde products. The complex catalyst selectively converts the alpha and beta olefin reactants more rapidly than the iso-olefin reactant resulting in an improved molar ratio of normal (linear) to branched aldehyde products. The unconverted iso-olefinic isomer is thereafter readily separated from the aldehyde product mixture.

A method for preparing absorbent used to separate heating element Cs out includes using materials of calixarene ether and macropore SiO2 covered with polymer to form said absorbent and setting mass of macropore SiO2 covered with polymer to be mass in 1-20 time of calixarene ether. The prepared absorbent uses calix[4] arene-R identification material to realize to separate and recover Cs from HLLW simultaneously in high selectively way.

A method for forming a pattern includes providing a composition to form a resist underlayer film on a surface of a substrate to be processed. The composition contains a calixarene based compound having a group represented by a following formula (i) bound to at least a part of an aromatic ring or at least a part of a heteroaromatic ring of the calixarene based compound. The resist underlayer film on the surface of the substrate is treated with heat or an acid. A resist pattern is formed on a surface of the resist underlayer film. The resist underlayer film and the substrate are etched using the resist pattern as a mask to form the pattern on the substrate. The dry-etched resist underlayer film is removed from the substrate with a basic solution.

—O—R¹  (i)

The invention discloses a polymer which contains calixarene comprises calixarene (4) derivatives, calixarene (6) derivatives, calixarene (8) derivatives, and polymer that is polymerized with copolymerizable monomer. The invention also discloses a preparation method and application of the polymer containing calixarene. The polymer containing calixarene of the invention is applied as a proton exchange membrane used in fabrication of hydrogen oxygen fuel cell.

The invention relates to a calix [8] areneboronic acid derivative and preparation thereof, as well as a composite containing the derivative and an application of the composite. A chemical formula of the derivative is C146H202O20N16B6. With 2-formylphenylboronic acid as an auxiliary ligand and a calix[8] arene tetrahydrazide derivative as a main ligand, the calix [8] areneboronic acid derivative and multi-walled carbon nanotubes are compounded to obtain black powdered calix arene phenylboronic acid derivative-multi-walled carbon nanotube composite. The large-specific-area calix [8] areneboronic acid derivative-carbon nanotube electrode material prepared by using the method has excellent heat conductivity and selective recognition property. The method disclosed by the invention is simple and easy to operate and easy to control. The prepared calix [8] arene phenylboronic acid derivative-carbon nanotube electrode material, namely the composite has a selective recognition effect on D-glucose through an electrochemical method.