68 results about "Chemical computing" patented technology

A method for forming an electrolytic capacitor is disclosed. The method includes forming a conductive polymer coating by polymerizing a monomer in the presence of less than a stoichiometric amount of an oxidative polymerization catalyst. The present inventor has found that the use of less than the stoichiometric amount of the oxidative polymerization catalyst per mole of monomer can slow the polymerization of the monomer, creating oligomers that are shorter in length than if fully polymerized into a polymer. Without wishing to be bound by theory, it is believed that these shorter oligomers provide better penetration into the porous anode. Thus, the resulting conductive polymer layer can be more intimately positioned with respect to the anode. As a result, the formed capacitor can exhibit better performance.

Flexible epoxy-based adhesive compositions which remain Theologically stable at room temperature in an uncured state comprise: (a) at least one flexible polyepoxide resin having a hardness not exceeding a durometer Shore D reading of 45 when cured with a stoichiometric amount of diethylene triamine ("DETA"); and (b) a substantially stoichiometric amount of at least one latent epoxy resin curing agent. Optionally, the adhesive composition may also incorporate one or more semi-flexible resins. Other optional components include fillers, thixotropic agents, and flexibilizers. The adhesive composition provicdes an epoxy-based adhesive composition that is storable for weeks as a single component mixture at room temperature, curable at temperatures ranging from about 100° C. to 125° C. in less than two hours, and flexible upon curing to temperatures as low as minus 50° C., exhibiting a durometer Shore A of less than about 95.

The passage of a container along a conveyor is lubricated by applying to the container or conveyor a composition comprising a water-miscible silicone material wherein the composition comprises a stoichiometric amount of an organic acid. The compatibility of the lubricating composition with polyethylene terephthalate is increased because of the presence of a stoichiometric amount of acid.

The present invention relates to a method for producing Diesel grade fuel of plant origin by transesterifying a refined vegetable oil in a homogenous phase with a C1-C4 alkanol in the presence of an aliphatic hydrocarbon solvent with a boiling point of 40-200° C. and a catalyst to form a first polar phase comprising glycerol by-product and a first apolar phase comprising transesterified fuel, non-transesterified vegetable oil, and aliphatic hydrocarbon solvent, separating the first polar phase and the first apolar phase, and refining the fuel from the first apolar phase, wherein the C1-C4 alcohol is used in an amount selected from the group consisting of: a stoichiometric amount; and an excess not exceeding 30% of an stoichiometric amount, and the aliphatic hydrocarbon solvent is used in an amount of at least 0.2 parts by volume relative to the unit volume of the refined vegetable oil.

The current invention provides a method for the manufacture of an ether of 5-hydroxymethylfurfural by reacting a hexose-containing starting material with a branched C3-C20 monoalcohol in the presence of a catalytic or sub-stoichiometric amount of an acid catalyst.

A one pot process for the preparation of sterically hindered triaryl phosphite is provided. The triaryl phosphite is of the formula P(OR)3 and is produced by reacting a hydroxyl-substituted aryl compound of formula ROH with phosphorus trihalide in a presence of a Lewis base, wherein R represents an aryl compound of a formula C6H3R1R2, wherein each R1 and R2 is an organic substituent. The process preferably comprises of mixing a substantial stoichiometric amount of 2,4-dialkyl phenol with phosphorous trihalide in methylene chloride with stoichiometric amount of pyridine. The reaction is preferably carried out at 0-5° C. and takes only 1 hr for the completion, followed by a precipitation out of isopropanol.

A process for forming a composition comprising organosilsesquioxanes, comprises the following steps:

• • 1. partially hydrolysing hydrolysable inorganic monomer precursors comprising at least 50 moles % of first hydrolysable inorganic monomer precursors having the formula RSiY₃, in which R is an organic group, the R—Si bond is a non-hydrolysable bond, each Y group is the same as or different to one another and is selected from chemically-reactive groups such that each Si—Y bond is hydrolysable to form a Si—OH bond, to form inorganic monomers and allowing partial condensation of the inorganic monomers to form a liquid composition comprising inorganic oligomers; 2. prior to complete condensation of the inorganic monomers, quenching the liquid composition with an amount of water which, in combination with the water used in step (1) and any water liberated by condensation of the inorganic monomers in step (1), is in excess of the stoichiometric amount of water required to achieve complete hydrolysis of all the hydrolysable inorganic monomer precursors present; and 3. drying the composition.

A process to produce a sulfur-free hydrocarbon product stream from a liquid hydrocarbon disulfide product, e.g., of the Merox Process, includes subjecting the hydrocarbon disulfide to a catalytic oxidation step to produce SO₂ which is separated from the remaining desulfurized hydrocarbons that form the clean sulfur-free hydrocarbon product stream; the SO₂ is introduced into a Claus processing unit with the required stoichiometric amount of hydrogen sulfide (H₂S) gas to produce elemental sulfur.

The present invention discloses a process for preparing zinc negative electrode active calcium zincate, wherein ZnO anc Ca(OH)2 are weighed by stoichiometric calculation and added into KOH solution for stirring, the temperature is controlled between the range of 70-100 degree C., stirring uninterruptedly for more than 72hrs, ageing for over 60 hrs in the environment of 70-95 degree C., cooling, filtering, washing to neutral, drying at the temperature of 105-110 degree C., grinding, screening by 300 mesh to obtain calcium zincate which can be used as the negative pole active compound for the Zn-Ni secondary cell.

A unique production of titanium compounds and metal by sustainable methods using iron-titanium oxide starting material such as ilmenite, leucoxene, or rutile is described. Here the iron-titanium oxide compound is prepared by converting the iron portion of the compound to ferrous chloride at low temperatures by using close to stoichiometric amounts of sulfur and chlorine required for all the iron oxides and the other non-titanium oxides. The ferrous chloride thus formed is removed recovering a marketable product of ferrous chloride and the ‘sustainable’ titanium oxide starting material by additional process steps. This can be converted to ‘sustainable’ titanium metal, or titanium tetra-chloride by process shown herein for further conversions to titanium dioxide pigment by present chloride process or supplied to existing titanium sponge producers, benefitting them in having a ‘sustainable process’.

An active substance (calcium zincate) for the negative electrode (Zn) of secondary alkaline battery is prepared from ZnO and Ca(OH)2 through proportioning, adding them to KOH solution, stirring at 75-95 deg.C for at least 72 hr. ageing at 75-95 deg.c for at least 60 hr, cooling, filtering, washing, baking at 105-110 deg.c, grinding and sieving by 300 meshes.

A method comprising contacting high-purity acid, high-purity aluminum, and high-purity water to form a first solution in a heated non-contaminating vessel, wherein the aluminum is employed in at least a stoichiometric amount relative to the acid, heating the first solution in a non-contaminating container, to provide a mother liquor and solid aluminum salts, separating the solid aluminum salts from the mother liquor, heating the solid aluminum salts in a non- contaminating crucible, to provide alpha aluminum oxide, and, optionally, washing the alpha aluminum oxide with high-purity water after some or all of the heating of the solid aluminum salts to provide the alpha aluminum oxide.

The invention relates to a process for reclaiming valuable substance from waste water, in particular a process for reclaiming calcium oxalate from waste water containing oxalic acid, characterized in that the process comprises the two steps of lime cream neutralization and calcium sulfate substitution, wherein the step of lime cream neutralization comprises charging lime cream into waste water containing oxalic acid for neutralization reaction, controlling the reaction temperature to be 80-90 deg. C, when the content of oxalic acid roots in the waste water amounts to 22-25 g/L, ceasing the charging of lime cream, while the calcium sulfate substitution step comprises charging calcium sulfate cream exceeding stoichiometric calculation amount into the waste water to be processed for displacement reaction, controlling the reaction temperature to be 95-98 deg. C, thus obtaining calcium oxalate and acid wastewater.

The invention discloses a method for producing crude sodium L-ascorbate by recovering crude vitamin C mother liquor. The method comprises the steps of: destaining crude vitamin C mother liquor through a macroporous adsorption resin, concentrating, crystallizing and centrifuging a destaining solution to obtain a crude vitamin C mother liquor recovered product, crushing and drying the mother liquor recovered product through a micro powder drying machine, performing esterification reaction with methanol, controlling the burdening ratio of mother liquor recovered product (weight) to methanol (volume) in the esterification reaction of 1: 7, reacting for 4 hours, wherein the esterification reaction temperature at the first hour is 68 DEG C, the esterification reaction temperature at the second hour is 60 DEG C, the esterification reaction temperature at the third hour is 55 DEG C and the esterification reaction temperature at the fourth hour is 50 DEG C, adding sodium bicarbonate with stoichiometric amount to perform conversion reaction to obtain intermediate crude sodium L-ascorbate, and then changing over to the production process of normal vitamin C. The production yield and quality of the crude sodium L-ascorbate are improved, the problem of the accumulation of a mother liquor recovered product is solved, and the production process is simplified.

The object of the invention is therefore to provide a method for the preparation of amino-functional polyorganosiloxanes, in which (A) organosiloxanes containing Si—OH groups are reacted with (B) at least stoichiometric amounts of monoalkoxy(aminoalkyl) silanes with respect to the Si—OH groups, wherein catalytically active additives selected from acid, base or metal-organic compound are used in amounts of less than 0.1 ppm acid, less than 30 ppm base and less than 0.4% metal-organic compound.

Disclosed herein are a method for quantitatively analyzing a molecular orbital distribution, and a quantitative analysis system of molecular orbital distributions using the same. The method comprise a) selecting two molecular orbitals to be compared for molecular orbital distributions and computing molecular orbital distributions by quantum chemistry calculation; b) calculating structural properties of each molecular orbital by means of an RDM (radially discrete mesh) calculation method, followed by matching with the molecular orbital distributions computed in step a) to obtain molecular orbital distributions according to the structural properties; and c) comparing the two molecular orbital distributions according to structural properties, obtained by RDM in step b), using a profiling method.