62 results about "Amine functionalization" patented technology

The invention provides a lubricating composition comprising an oil of lubricating viscosity and an amine-functionalised additive, wherein the amine-functionalised additive is derived from an amine having at least 3 aromatic groups, at least one —NH2 functional group, and at least 2 secondary or tertiary amino groups. The invention further provides for the additive to have dispersant and/or dispersant viscosity modifying properties. The lubricating composition is suitable for lubricating an internal combustion engine.

Compositions comprising acid salts of amine-functionalized styrene-maleic anhydride resins are disclosed. The salts can be dissolved in organic solvents, UV/EB polymerizable monomers and/or oligomers, and/or water and act as a polymeric surfactants to disperse pigments or fillers, emulsifying agents, or hard resin additives in a variety of formulations. The compositions react under UV/EB cure conditions, and provide enhanced properties such as cure speed, hardness and adhesion to polymer compositions.

Particulates, such as proppants, that are coated with a coating agent selected from the group consisting of: organosilanes, organosiloxanes, polysiloxanes, long carbon chain hydrocarbon amines containing no silicon or fluoro-based groups in the molecule, amine functionalized polyolefins and polymerizable natural oils; and a chemical additive selected from the group consisting of: a scale inhibitor, a biocide, and an H₂S scavenger. The coating agent controls the release of the additive from the particulate surface into surrounding fluid, providing a slow release that promotes the long lasting effect of the additive. The coated particulates have use in oilfield applications such as hydraulic fracturing operations, gravel pack operations, and in water treatment processes.

A process is provided for preparing ethylene amines of the formula NH₂—(C₂H₄—NH—)_pH wherein p is at least 2, or derivatives thereof wherein one or more units —NH—C₂H₄—NH— are present as a cyclic ethylene urea unit

The process includes reacting an ethanolamine-functional compound OH—(C₂H₄—NH—)_qH or HO—(C₂H₄—NH)_q—C₂H₄—OH wherein q is at least 1, and an amine-functional compound NH₂—(C₂H₄—NH—)_rH wherein r is at least 1, in the presence of a carbon oxide delivering agent and water, with a molar ratio of water:carbon oxide delivering agent of from about 0.01:1 to about 2:1.

The invention discloses a preparation method of an artificial fish reef, and belongs to the technical field of marine environment protection. The method comprises the steps that sodium bentonite withthe water isolation effect is added into concrete base slurry, concrete is foamed to form concrete of a porous structure, exterior some metal ions can be fixed after the concrete is molded, sodium silicate is dissolved into water, a gel sodium silicate water solution is formed, and therefore the waterproof permeability of the concrete is improved. A protecting agent of a waterproof duct is modified phenolic resin, molybdenite mountain flour and liquid paraffin are added, molybdenite contains a large number of sulfur elements, the artificial fish reef adopts polymine as an amine modifying agent, due to the silicon oxide amine functionalization on the surface of concrete, silicon dioxide and phenolic aldehyde resin can be subjected to dehydration condensation, the artificial fish reef adoptsporous concrete of the dense micro structure as the base material, the waterproof protective agent covers the surface and internal macro duct, more alga biologies can grow fixedly, surrounding fish can be attracted, and the application project is wide.

The invention discloses a nano gold catalyst and a preparation method, in particular to a preparation method of an amine functional mesoporous silica-gel-loaded gold catalyst. The amine functional mesoporous silica-gel-loaded gold catalyst consists of Au, Si, C, O, N and the like, wherein Au is used as a catalyst active component, and the content of Au is 0.1 to 10 percent. The preparation method of the catalyst is processed in two steps and comprises the following steps of adding a silicon source into a water-ammonia water-organic solvent consolute system to obtain a mesoporous silica-gel nano-ball; carrying out amine functionalization on the mesoporous silica-gel nano ball by utilizing the 3-amino propyl triethoxysilane, and finally loading the nano gold. The nano gold catalyst and the preparation method have the advantages that the load rate of the gold is high, the dispersion property is good, and the catalyst is simple to prepare and good in stability. The catalyst has excellent catalytic property in the olefin epoxidation reaction and oxidation reaction of thioether to sulfoxide, the conversion rate of the catalyst for the styrene oxidation reaction can reach up to 96.8 percent, and the oxidation selectivity is stabilized at 83.7 percent; the conversion rate of the thioether in the oxidation reaction to sulfoxide is 100 percent, and the selectivity of the methyl phenyl sulfoxide is 89.5 percent.

The invention discloses a preparation method of waterproof high-tenacity porous silicon dioxide, and belongs to the technical field of preparation of inorganic nano materials. When a template is dipped into dispersion liquid which is prepared from titanium dioxide, ammonium dihydrogen phosphate, calcium chloride dihydrate and sodium carbonate, the dispersion liquid does not only plays the role ofpromoting hydrolysis, so that the contact area between porous silicon dioxide and a titanium-based material is larger and larger, and accordingly the strength and the tenacity of porous silicon dioxide are improved advantageously. The protection agent of the waterproof pipe duct is modified phenolic resin, molybdenite stone powder and liquid paraffin are added into the protection agent, the molybdenite stone contains a large amount of sulphur elements, a sulphur-containing compound can enable the liquid paraffin and the phenolic resin to achieve a cross-linking effect, so that the compactnessof the surface protective layer of the paraffin layer of the pore duct protection agent is improved, silicon dioxide and phenolic resin can be subjected to dehydration condensation through the amine functionalization of the porous SiO2 material, and bonded to be an integral part, meanwhile, a bonded hydrogen bond in the porous SiO2 material can improve the bonding force between the pore duct protection agent and silicon dioxide, and the application prospect is wide.

The present invention deals with a novel curable composition comprising bis-benzoxazine and an amine-functionalized triazine, especially a di-isoimide, and the use thereof in the preparation of encapsulated printed wiring boards, especially flexible printed wiring boards. The curable composition hereof beneficially effects crosslinking of bis-benzoxazine at a lower temperature than has heretofore been provided in the art.

The invention discloses reduced graphene oxide with efficient tea matrix adsorption and purification and a preparation method and application of the reduced graphene oxide and belongs to the technical field of product sample pretreatment. The reduced graphene oxide is obtained via amine functionalization of the graphene oxide. The reduced graphene oxide has the advantages that raw materials are easy to obtain, and the raw material is graphite which is low in price; small-molecule amine with carbon atoms less than 8 is reacted with the graphene oxide in a heat solvent, and the graphene oxide is reduced to form the reduced graphene oxide; meanwhile, amino of the small-molecule amine is reacted with carboxyl of the graphene oxide to form amido linkage, the generated reduced graphene oxide has rich polar groups of amido, carboxyl, hydroxyl, epoxy group and the like on the surface of the reduced graphene oxide, interaction force of the components high in content of coloring matter, alkaloid, tea polyphenol, saccharides and the like in a tea matrix is higher, and high matrix purification effect of the reduced graphene oxide is guaranteed; the functional reduced graphene oxide is large in adsorption capacity and good in purification effect.

The invention discloses a proton exchange membrane applied to a fuel cell and a preparation method of the proton exchange membrane. The proton exchange membrane is prepared from the following raw materials: 0.005 g-0. 03g of functionalized cobalt titanate nano particles and 0.97 g-0.995 g of sulfonated polyethersulfone. The novel proton exchange membrane is prepared by combining amine functionalized cobalt titanate nanoparticles with a sulfonated polyethersulfone polymer matrix; surface modification is carried out on cobalt titanate nano particles by adopting grafted (3-aminopropyl)triethoxysilane; the interfacial compatibility of the ACT nano particles subjected to surface modification and the SPES is improved, so that the ACT nano particles can be uniformly dispersed in the SPES film; the prepared nano composite film is characterized by adopting technologies such as Fourier transform infrared spectroscopy, thermogravimetric analysis, a universal testing machine, a field emission scanning electron microscope and an atomic force microscope; the obtained nano composite film shows better stability and good water retention performance.

An integrated process for manufacturing polyethyleneamine compounds selected from the group of polyethyleneamines and hydroxyethylethyleneamines is provided. The process includes in an adduction step, providing a CO₂ adduct of a starting compound comprising a —NH—CH₂—CH₂—NH— moiety or a —NH—CH₂—CH₂—OH moiety, or HO—CH₂—CH₂—OH, in a reaction step reacting a hydroxy-functional compound selected from the group of ethanolamines and dihydroxyethane with an amine-functional compound, wherein at least part of the total of hydroxy-functional compounds and amine-functional compounds is provided in the form of a CO₂ adduct, to form CO₂ adduct of a product polyethyleneamine compound, in an elimination step converting CO₂ adduct of product polyethyleneamine compound to the corresponding product polyethylene amine compound, wherein a fraction comprising a recycle compound comprising a —NH—CH₂—CH₂—NH— moiety or a —NH—CH₂—CH₂—OH moiety, or HO—CH₂—CH₂—OH, or CO₂ adducts thereof, is provided from the end of the reaction step or the elimination step to the adduction step or to the reaction step, wherein the recycle compound has per molecule on average fewer of the total of —NH—CH₂—CH₂—NH— moieties and —NH—CH₂—CH₂—OH moieties than the product polyethyleneamine compound.

A process for the production of at least one of amorphous carbon or graphite, preferably of carbon black, from atmospheric air, biogas or flue gas CO2 is given, including at least the following steps:

a) isolation of concentrated CO2 of a concentration of at least 50% v/v from atmospheric air, green house air or flue gas preferably by means of a cyclic adsorption/desorption process on amine-functionalized adsorbents;

b) conversion of said captured CO2 into a gaseous or liquid saturated or unsaturated hydrocarbon by hydrogenation:

c) cracking of said saturated or unsaturated hydrocarbon to at least one of amorphous carbon or graphite, preferably carbon black,

wherein the H2 resulting from step c) is at least partially used in the hydrogenation of step b).

The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber, styrene-butadiene rubber, isoprene-butadiene rubber, or styrene-isoprene-butadiene rubber, that are amine functionalized and have a high trans microstructure. The catalyst system, in one embodiment, includes (a) an organolithium amine compound, (b) a group IIa metal salt of an amino glycol or a glycol ether, (c) an organoaluminum compound, and optionally (d) an amine compound. The amine functionalized rubbery polymers can be utilized in tire tread rubbers where the rubbery polymers may provide desirable wear properties without substantially sacrificing other performance characteristic(s), e.g., traction properties.

The present invention relates to novel amine terminated cycloaliphatic polysiloxanes, and preparations thereof. More particularly, the invention provides several reaction schemes for the synthesis of amino-functionalized cyclo-aliphatic silicones and the products produced by the reaction schemes. In one embodiment of the invention, an amine functionalized silicone is prepared through a base-catalyzed ring-opening reaction. In another embodiment of the invention, an amine functionalized silicone is prepared through the hydrosilation of a silicone oligomer through the blocking and deblocking of an amine terminated in a vinyl group.

The disclosure is directed at a method of producing a recyclable photocatalytic particulate. The recyclable photocatalytic particulate includes metal oxide nanoparticles and electrically insulative magnetic particles which are amine functionalized and then added to a sheet of graphene oxide, preferably in solution. This combination is then hydrothermally treated to create covalent bonds between the metal oxide nanoparticles and the graphene oxide sheet and the electrically insulative controlled aggregates with the graphene oxide sheet.

The invention provides a foam carbon-based solid amine adsorbent and a preparation method and application thereof, and relates to the technical field of gas trapping materials. The method comprises the following steps that vitrinite enriched products with different coalification degrees serve as precursors, primary coal-based foam carbon is prepared through the supercritical foaming technology, the coal-based foam carbon is obtained after carbonization, activation heat treatment is conducted to obtain a coal-based foam carbon carrier with a graded porous structure, and amine functionalization is conducted to obtain the solid adsorbent. The adsorbent has the advantages that the raw materials are wide in source and suitable for industrial production, and the carrier with the hierarchical porous structure can effectively load organic amine. When the solid adsorbent is used for capturing carbon dioxide, the operation is simple, the corrosion to equipment is small, and excellent carbon dioxide adsorption performance and regeneration capacity are shown.

A process of preparing a polydopamine aerogel comprising first mixing together a silica precursor and an amine-functionalized silica precursor in a solvent to form a first solution. Then, adding an acid catalyst to the first solution to form a silica gel. Then, equilibrating the silica gel in a 50/50 solvent/water mixture. Wherein the final step in the process is to add about 1 mg/ml solution of a dopamine monomer to the silica gel to form a polydopamine aerogel.

The invention belongs to a composite material modification method of nylon PA6, and particularly relates to special super-tough nylon capable of blow molding, which is based on common nylon PA6 and comprises 70-90 parts of PA6 resin, 10-29 parts of a compatilizer, 0.5-1 part of an amide functionalized auxiliary agent and 0.5-1 part of other auxiliary agents, and the amide functionalized auxiliary agent is a Zn-BTC-MOF material loaded with SiO2. The material is simple in manufacturing process, replaces imported products and can be applied to the fields of automobiles, flow line production equipment and the like.

The invention discloses a preparation method of core-shell magnetic nanoparticles with high selectivity for antibody separation, which comprises the following steps: preparing ferroferric oxide/silicon oxide nanoparticles with a core-shell structure, performing amine functionalization treatment on the ferroferric oxide/silicon oxide nanoparticles, and finally coupling IgG2a on the surfaces of the ferroferric oxide/silicon oxide nanoparticles. The preparation method comprises the following steps: dispersing IgG2a coupled magnetic nanoparticles in a PBS (Phosphate Buffer Solution), adding tetraethyl silicate, stirring and reacting, adding a mixed solution of N-propyltriethoxysilane, benzyltriethoxysilane and (3-aminopropyl)-triethoxysilane, reacting, dropwise adding a mixed solution of methanol, PEG-4 and NHS (N-Hydroxysuccinimide) after the reaction is finished, continuously stirring, washing precipitates by adopting the PBS, and drying, thereby obtaining the IgG2a coupled magnetic nanoparticles. And finally, adding the precipitate into a mixed solution of a sodium hydroxide solution and a polyethylene glycol octylphenol ether solution for treatment to prepare magnetic nanoparticles, and re-dispersing the magnetic nanoparticles into a PBS buffer solution for later use. The core-shell magnetic nanoparticle provided by the invention has many surface binding sites and high selectivity, and can effectively purify a monoclonal shell.

Illustrative examples of forming material suitable for use in additive manufacturing processes includes operations of: exposing a first polymer powder to a first plasma, such that an amine-functionalized powder is formed; exposing a second polymer powder to a second plasma, such that an epoxide-functionalized powder is formed; and combining the amine-functionalized powder and the epoxide-functionalized powder to form a precursor material. The precursor material is subsequently heated in an additive manufacturing process to form a structure, where heating of the precursor material causes covalent chemical bonds to form between the first polymer powder and the second polymer powder.