1055 results about "Borane" patented technology

A γ,δ-unsaturated carboxylic acid silyl ester is prepared by reacting an α,β-unsaturated carboxylic acid ester with a hydrosilane or hydrosiloxane in the presence of tris(pentafluorophenyl)borane. γ,δ-Unsaturated carboxylic acid derivatives are readily prepared through fewer steps and in high yields.

A method of alkene polymerization and copolymarization with f load non- metallocene catalyst: emplying the load non- metallocene catalyst and catalyst promoter forming the catalytic system, introducing polymer monomer or comonomer for alkene polymerization or copolymarization; adding the load non- metallocene catalyst into dissolvent and mixing with catalyst promoter and then transferring the mixture into polymerization reactor, or adding the load non- metallocene catalyst and catalyst promoter into the polymerization reactor in order or simultaneously. The catalyst promoter is chosen from: alkyl aluminium, aluminium oxane, Lewis acid, boralotano, alkyl borane or alkyl borane ammonium salt. The load non- metallocene catalyst is loaded to multiple poral solid by employing methods of solution dipping, equivoluminal dipping or solution dipping-before-equivoluminal dipping to form organic integral of property stable and strong binding force. The invention is characterized by the high alkene polymerization active, high fusion point and good normalization of the produced polymer, and the sastification of the demand of high level product production.

A catalyst composition and method for preparing a supported catalyst system for olefin polymerization is provided. In one aspect, the catalyst composition includes a reaction product of a dialuminoxane and a halogen substituted aryl borane, wherein the reaction takes place on a support and at conditions sufficient to exchange one or more ligands on the dialuminoxane for one or more ligands on the halogen substituted aryl borane while on the support. In one embodiment, the method for preparing the supported catalyst system includes combining a dialuminoxane with a support to form a treated catalyst support, and combining a halogen substituted aryl borane with the treated catalyst support at conditions sufficient to exchange one or more ligands on the dialuminoxane for one or more ligands on the halogen substituted aryl borane while on the support to form a supported activator. The method further includes reacting one or more polymerization catalysts with the supported activator.

In one embodiment the invention is a polymerizable composition comprising a) an organoborane amine complex; b) one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization; c) one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization; and d) a catalyst for the polymerization of the one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization. This composition may further comprise a compound which causes the organoborane amine complex to disassociate. In a preferred embodiment, the two part composition further comprises a compound which is reactive with both the b) one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization; and the c) one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization. This composition can be polymerized by contacting the two parts of the composition. In another embodiment the invention is an organoborane amine complex comprising an alkyl borane having ligands which are alkyl, cycloalkyl or both and an amino siloxane.

The invention discloses a preparation method for propellant fuel. The preparation method comprises the following steps: uniformly mixing hydrazine or a methyl derivative thereof with a tetrahydrofuransolution of borane to perform a reaction, and after the reaction, performing rotary evaporation on the tetrahydrofuran solution to obtain a first product; adding a first solvent into the first product, then performing washing, and then performing rotary evaporation to remove the first solvent, so as to obtain a hydrazinoborane derivative. According to the method, hydroboration is carried out on ahighly-volatile hydrazine fuel and a methylated derivative of hydrazine, the obtained borohydride of the hydrazine is a colorless non-volatile liquid or a white solid, has no volatility and greatly reduces hazard of the hydrazine fuel, and is a novel aerospace propellant fuel since the ignition delay time of the hydrazine borofluoride is extremely short.

A device for generating hydrogen gas is provided. The device (101) comprises a first hydrogen-containing composition (107) that reacts with a second composition to evolve hydrogen gas; a dispenser (105) adapted to apply the first composition to a first porous member (109); and a conduit (111) adapted to supply the second composition to the first porous member. In a preferred embodiment, the first composition is selected from the group consisting of hydrides, borohydrides and boranes, the second composition is water, and the dispenser is spring-loaded and is charged with the first composition. As the first composition reacts with water at the interface to evolve hydrogen gas, the dispenser forces the reaction product across the interface and out of the dispenser, where it will not interfere with the progress of the hydrogen evolution reaction.

In one embodiment of the invention, a method for forming a tungsten-containing layer on a substrate is provided which includes positioning a substrate containing a barrier layer disposed thereon in a process chamber, exposing the substrate to a first soak process for a first time period and depositing a nucleation layer on the barrier layer by flowing a tungsten-containing precursor and a reductant into the process chamber. The method further includes exposing the nucleation layer to a second soak process for a second time period and depositing a bulk layer on the nucleation layer. In one example, the barrier layer contains titanium nitride, the first and second soak processes independently comprise at least one reducing gas selected from the group consisting of hydrogen, silane, disilane, dichlorosilane, borane, diborane, derivatives thereof and combinations thereof and the nucleation layer may be deposited by an atomic layer deposition process or a pulsed chemical vapor deposition process while the bulk layer may be deposited by a chemical vapor deposition process or a physical vapor deposition process.

In one embodiment of the invention, a method for forming a tungsten-containing layer on a substrate is provided which includes positioning a substrate containing a barrier layer disposed thereon in a process chamber, exposing the substrate to a first soak process for a first time period and depositing a nucleation layer on the barrier layer by flowing a tungsten-containing precursor and a reductant into the process chamber. The method further includes exposing the nucleation layer to a second soak process for a second time period and depositing a bulk layer on the nucleation layer. In one example, the barrier layer contains titanium nitride, the first and second soak processes independently comprise at least one reducing gas selected from the group consisting of hydrogen, silane, disilane, dichlorosilane, borane, diborane, derivatives thereof and combinations thereof and the nucleation layer may be deposited by an atomic layer deposition process or a pulsed chemical vapor deposition process while the bulk layer may be deposited by a chemical vapor deposition process or a physical vapor deposition process.

Disclosed herein is a method of preparing a 188Re-tricarbonyl complex for radiopharmaceutical use and of preparing a precursor thereof, and a contrast agent using the same. Particularly, this invention provides a method of preparing a 188Re-tricarbonyl precursor by reacting perrhenate with borane-ammonia (BH3.NH3), potassium boranocarbonate (K2[H3BCO2]) and phosphate in the presence of borohydride exchange resin as a reducing agent, and a method of preparing a 188Re-tricarbonyl complex by reacting the 188Re-tricarbonyl precursor with a ligand. According to the method of this invention, the borohydride exchange resin is used as a reducing agent and as an anion scavenger, thereby obtaining the 188Re-tricarbonyl precursor and complex having high radiolabeling yield and high purity. In addition, the 188Re-tricarbonyl complex can be used as a contrast agent having excellent plasma stability.

The invention relates to hydrogen production and hydrogen storage technologies and materials, in particular to a catalyst for catalytic hydrolysis of borane for the hydrogen production and a preparation method thereof, thereby solving the problems that the direct application of powder catalyst in a catalytic hydrolysis solid-liquid reaction system can cause the loss of the catalyst, the catalytic hydrolysis reaction is difficult to control and the hydrolysis by-products are difficult to be recovered, etc. The catalyst is composed of an active component and a carrier; the active component is a binary, ternary or multinary alloy or a single precious metal or the combination thereof which is composed of one or more transition metals, rare earth metals or precious metals and metalloids; the active component is deposited on the carrier through the improved chemical plating technology, the surface thereof is rough and porous, and the structure of the prepared catalyst is the amorphous or the nanocrystalline structure. The preparation method has simple preparation process, high preparation efficiency and convenient large-scale preparation; the sources of the used raw materials are rich; the catalytic activity of the prepared supported catalyst is high, the real-time control of the catalytic hydrolysis reaction of the borane can be realized, the catalytic performance is stable, and the catalyst can be repeatedly used for a plurality of times.

The present invention relates to improved aqueous fuels for hydrogen generators and a method for using them in the production of hydrogen. The present invention also relates to a system of using the subject aqueous fuels to generate hydrogen gas for use in a fuel cell or other device. The subject fuels contain a mixture of boron hydrides, at least one of which is a metal salt, including metal borohydrides, higher boranes and metal higher boron hydrides. The subject aqueous fuels contain a mixture of boron hydrides having a positive ionic charge (+IC) to boron ratio of between 0.2 and 0.4 or between 0.6 and 0.99. Preferred fuels contain a mixture of boron hydrides having an (+IC) to boron ratio between 0.2 and 0.3 or between 0.7 and 0.8. Mixtures containing a metal borohydride also contain a metal hydroxide to stability it against premature hydrolysis in the aqueous fuel media.

New, economical and convenient procedures for the preparation of catecholborane in high chemically pure form using tri-O-phenylene bis borate readily prepared from the reaction of catechol with boric acid, and diborane or borane-Lewis base complexes.

Embodiments of the invention generally provide compositions of plating solutions, methods to mix plating solutions and methods to deposit capping layers with plating solutions. The plating solutions described herein may be used as electroless deposition solutions to deposit capping layers on conductive features. The plating solutions are rather dilute and contain strong reductants to self-initiate on the conductive features. The plating solutions may provide in-situ cleaning processes for the conductive layer while depositing capping layers free of particles. In one embodiment, a method for forming an electroless deposition solution is provided which includes forming a conditioning buffer solution with a first pH value and comprising a first complexing agent, forming a cobalt-containing solution with a second pH value and comprising a cobalt source, a tungsten source and a second complexing agent, forming a buffered reducing solution with a third pH value and comprising a hypophosphite source and a borane reductant, combining the conditioning buffer solution, the cobalt-containing solution and the buffered reducing solution to form the electroless deposition solution. The electroless deposition solution includes the cobalt source in a concentration range from about 1 mM to about 30 mM, the tungsten source in a concentration range from about 0.1 mM to about 5 mM, the hypophosphite source in a concentration range from about 5 mM to about 50 mM, the borane reductant in a concentration range from about 5 mM to about 50 mM, and has a total pH value in a range from about 8 to about 10.

The invention provides new methods for synthesis of B9H9−, B10H102−, B11H14−, and B12H122− salts, particularly alkylammonium salts of B9H9−, B10H102−, B11H14−, and B12H122−. More particularly, the invention provides methods of preparing tetraalkylamronium salts of B9H9−, B10H102−, B11H14−, and B12H122− by pyrolysis of tetraalkylammonium borohydrides under controlled conditions. The invention additionally provides methods of preparing, in an atom efficient process, octadecaborane from the tetraalkylammonium salts of the invention. Preferred methods of the invention are suitable for preparation of isotopically enriched boranes, particularly isotopically enriched 10B18H22 and 11B18H22.

A process is disclosed for the reduction of (S)-2-amino-6-propionamido-4,5,6,7-tetrahydrobenzothiazole, which comprises reacting (S)-2-amino-6-propionamido-4,5,6,7-tetrahydrobenzothiazole with a borane reagent in the presence of suitable organic solvent to yield (S)-2-amino-6-propylamino-4,5,6,7-tetrahydrobenzothiazole base, which may be converted to an acid addition salt thereof. The process provided herein can be easily, conveniently and inexpensively scaled-up.

Embodiments of the invention generally provide compositions of plating solutions, methods to mix plating solutions and methods to deposit capping layers with plating solutions. The plating solutions described herein may be used as electroless deposition solutions to deposit capping layers on conductive features. The plating solutions are rather dilute and contain strong reductants to self-initiate on the conductive features. The plating solutions may provide in-situ cleaning processes for the conductive layer while depositing capping layers free of particles. In one embodiment, a method for forming an electroless deposition solution is provided which includes forming a conditioning buffer solution with a first pH value and comprising a first complexing agent, forming a cobalt-containing solution with a second pH value and comprising a cobalt source, a tungsten source and a second complexing agent, forming a buffered reducing solution with a third pH value and comprising a hypophosphite source and a borane reductant, combining the conditioning buffer solution, the cobalt-containing solution and the buffered reducing solution to form the electroless deposition solution. The electroless deposition solution includes the cobalt source in a concentration range from about 1 mM to about 30 mM, the tungsten source in a concentration range from about 0.1 mM to about 5 mM, the hypophosphite source in a concentration range from about 5 mM to about 50 mM, the borane reductant in a concentration range from about 5 mM to about 50 mM, and has a total pH value in a range from about 8 to about 10.

The present invention provides improved methods for synthesis of phosphinothiol reagents, as well as novel protected reagents, for use in formation of amide bonds, and particularly for peptide ligation. The invention provides phosphine-borane complexes useful as reagents in the formation of amide bonds, particularly for the formation of an amide bond between any two of an amino acid, a peptide, or a protein.

A method for forming a conductive feature comprises forming a metal film such as ruthenium then annealing the film in an atmosphere comprising a hydrogen-rich gas such as ammonia, hydrogen, borane, or diborane, or in another gas such as carbon monoxide. The anneal may decrease the carbon content of the film and results in a metal layer having a lower resistance than the preannealed metal film.

The invention provides three-coordinated organoboron compounds that are useful for photoluminescence and electroluminescence. Compounds of the invention include light emitters, preferably emitting intense blue light, electron transporters, hole transporters and hole injectors. A particularly preferred such compound is p-(1-naphthylphenylamino)-4,4′-biphenyldimesitylborane (BNPB), which demonstrates all of these properties. The invention further provides methods of synthesizing such three-coordinated boron compounds, methods of producing photoluminescence and electroluminescence, methods for charge transports, methods for hole injection, methods of applying the compounds in thin films, and uses of the compounds of the invention in luminescent probes, and electroluminescent displays.

Conducting and superconducting doped, magnesium boride materials are formed by a process which combines physical vapor deposition with chemical vapor deposition by physically generating magnesium vapor in a deposition chamber and introducing a boron containing precursor and a dopant into the chamber which combines with the magnesium vapor to form the material. Embodiments include forming carbon-doped magnesium diboride film and powder with hybrid physical-chemical vapor deposition (HPCVD) by adding a carbon-containing metalorganic magnesium precursor, bis(methylcyclopentadienyl)magnesium, with a hydrogen carrier gas together with a borane precursor in a chamber having a source of magnesium vapor.

The invention provides an intermediate for synthesizing ezetimibe and a preparation process thereof, and also provides a method for synthesizing the ezetimibe by the intermediate. The synthesizing method has short route, and comprises the following concrete steps: a compound I and substituted 1, 3-propanediol react to generate a compound II; the compound II and pivalyl chloride react to generate a compound III; the compound III and a compound A react to generate a compound IV; the compound IV and a compound V react to generate a compound VI under the condition of a titanium compound catalyst; the compound VI is re-ringed to generate a compound VII with beta-lactam; the compound VII is hydrolyzed to produce a compound VIII; and the compound VII is reduced to a compound IX ezetimibe by a borane chiral reducing agent. The synthesization has short route and mild reaction condition; and the produced intermediate and final product has high yield and high purity.

The invention provides an electrolyte of a lithium ion battery, which contains lithium salts, nonaqueous solvents and an addictive, wherein, the additive is selected from two or more than two varieties of an additive A, an additive B and an addictive C; the addictive A is one more types of fused ring compounds and condensed heterocyclic compounds; the addictive B is an aromatic compound containing alkoxy; the addictive C is a halogenated borane salt. The invention also provides a lithium ion battery and a battery set made by the electrolyte. The nonaqueous electrolytic solution can obviously raise the consistency of each single cell voltage in the discharging process of the battery set and the safety property of each single battery (and the battery set). The lithium ion battery containing the nonaqueous electrolytic solution has good low-temperature discharging property, high-temperature storage and cycling property.

A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. The method generates hydrogen and produces a solid polymeric [R1R2B—NR3R4]n product. The method of dehydrogenating amine-boranes may be used to generate H2 for portable power sources.

The invention relates to a porous material supported nano alloy catalyst as well as a preparation method and application thereof and belongs to the technical field of nano material application and catalysis. The preparation method for the porous material supported nano alloy catalyst is characterized comprising the step of reaction through taking a metallic compound as a precursor, a porous material as a carrier and a borane substance as a reducing agent under the action of supercritical carbon dioxide used as a fluid medium; in the catalyst, the types of nano alloy are selected from Pt, Au, Ag, Pd, Ru, Rh, Pb, Fe, Co, Ni, Ir, Cu and the like and can be arbitrarily matched and proportioned; the size of each of nano alloy particles is about 1-2 nm. The nano particles not only can be distributed on the surface of the carrier, but also can be distributed in holes, even mesopores; therefore, the catalyst has higher catalytic activity and stability.