562 results about "Reaction inhibitor" patented technology

Use of a Maillard reaction product as an adjuvant in a variety of applications including solid-liquid separations, corrosion inhibition, emulsification, dust suppression, slow release fertilization, viscosity modification and others and especially as a depressant or collector in separation processes, including the selective separation of solids and/or ionic species from aqueous media, such as in the process of froth flotation.

The crosslinkable rubber composition of the invention is crosslinkable by hot air, and a hot-air crosslinked rubber sheet thereof has no scratch on the surface in a hardness test using a pencil of HB and has a compression set of not more than 70% after a heat treatment at 150° C. for 22 hours. The rubber composition comprises an ethylene/α-olefin/non-conjugated polyene random copolymer rubber comprising a specific vinyl end group-containing norbornene compound, a SiH group-containing compound having at least two SiH groups in one molecule, and if necessary, an addition reaction catalyst comprising a platinum group element and a reaction inhibitor. The automobile weatherstrip, hose, rubber vibration insulator, belt, sealing material, expanded product, covered electric wire, electric wire joint, electric insulating part and household rubber product according to the invention comprise the above-mentioned rubber composition. The rubber composition has a high crosslinking rate and excellent productivity to produce crosslinked rubber molded products, is capable of undergoing hot-air crosslinking such as HAV or UHF and is capable of providing crosslinked rubber molded products having excellent compression set resistance, strength properties, heat resistance, weathering resistance and abrasion resistance.

The invention provides a process for the production of a synthetic naphtha fuel suitable for use in compression ignition (CI) engines, the process including at least the steps of hydrotreating at least a fraction of a Fischer-Tropsch (FT) synthesis reaction product of CO and H2, or a derivative thereof, hydrocracking at least a fraction of the FT synthesis product or a derivative thereof, and fractionating the process products to obtain a desired synthetic naphtha fuel characteristic. The invention also provides a synthetic naphtha fuel made by the process as well as a fuel composition and a Cloud Point depressant for a diesel containg fuel composition, said fuel composition and said depressant including the synthetic naphtha of the invention.

The crosslinkable rubber composition is crosslinkable at room temperature, has a gelation time at room temperature of 30 days or less, and can prepare a crosslinked rubber sheet by crosslinking the composition at room temperature, wherein the crosslinked rubber sheet has a tensile elongation of 20% or more, and is free of cracks after treatment at 40° C. in a 50 pphm ozone concentration for 96 hr. Specifically, it comprises an ethylene/alpha-olefin/non-conjugated polyene random copolymer rubber comprising a norbornene compound having a specific vinyl end group, an SiH group-containing compound, which has at least two SiH groups in one molecule, and optionally a platinum catalyst, a reaction inhibitor and/or a silane-coupling agent. The sealing, potting and coating materials and adhesives of the present invention comprise the above rubber composition. The rubber composition has a high crosslinking rate at room temperature and excellent productivity, and can prepare crosslinked rubber molded products (including foamed products) having excellent weathering resistance, ozone resistance, heat aging resistance and compression set at low cost. Further, it is suitable for use of electric and electronic parts, transportation machines, civil engineering and construction materials, medical appliances and goods for leisure activities.

A depolymerized-carboxyalkyl polysaccharide formed by de polymerizing a polysaccharide having from 0.5 to 3.0 degrees of substitution and reducing the molecular weight of said polysaccharide before or after said depolymerizing provides a biodegradable scale inhibitor useful to prevent deposition of scale comprising, for example, calcium, barium, sulfate and salts thereof. The depolymerized carboxyalkyl polysaccharide is particularly useful in off shore oil production squeeze treatments and in the treatment of scale formed in industrial water treatment.

The present invention relates to methods and compositions for the direct detection of membrane conformational changes through the detection of color changes in biopolymeric materials. In particular, the present invention allows for the direct colorimetric detection of membrane modifying reactions and analytes responsible for such modifications and for the screening of reaction inhibitors.

A method and apparatus for a rapid disruption of cells or viruses using micro magnetic beads and a laser are provided. According to the method and apparatus for a rapid disruption of cells or viruses using micro magnetic beads and a laser, cell lysis within 40 seconds is possible, the apparatus can be miniaturized using a laser diode, a DNA purification step can be directly performed after a disruption of cells or viruses, and a solution containing DNA can be transferred to a subsequent step after cell debris and beads to which inhibitors of a subsequent reaction are attached are removed with an electromagnet. In addition, by means of the cell lysis chip, an evaporation problem is solved, vibrations can be efficiently transferred to cells through magnetic beads, a microfluidics problem on a rough surface is solved by hydrophobically treating the inner surface of the chip, and the cell lysis chip can be applied to LOC.

The invention discloses an agent box, which is characterized by the following: utilizing the relation between mononucleotide polymorphism site E112D genetype of important enzyme praline carboxypeptidase gene on vessel or esoderma regulating access and ACEI medical effect; forecasting ACEI medical effect; possessing good ACEI medical effect when genetype as 112EE pure wild-type; possessing bad effect when the genetype as 112ED heterozygous type or 112DD pure saltant; incorporating polymorphism parting oligonucleotide of E112D polymorphism site genetype with praline carboxypeptidase gene to test biological sample and related agent. This invention improves effectiveness and safety of clinic medicine, which provides criterion for new medicine of high blood pressure.

The invention provides a preparation method of an S/TiO2 composite material for an anode of a sodium-sulfur battery. The preparation method comprises the following steps: dissolving butyl titanate, a template agent and a hydrolysis inhibitor into absolute ethyl alcohol; adding a mixed solution of de-ionized water and the absolute ethyl alcohol to form semi-transparent sol; transferring the sol into a high-pressure reaction kettle to react; calcining a solid product in air to remove the template agent to obtain meso-porous titanium dioxide; dispersing the meso-porous titanium dioxide into a sodium thiosulfate solution dissolved with a surfactant; adding hydrochloric acid to react; washing the solid product by a lot of the de-ionized water and drying; and eating under the protection of an inert atmosphere to obtain the S/TiO2 composite material. The meso-porous titanium dioxide prepared by the preparation method is large in specific surface area, high in porosity and strong in adsorption capability; the electrical conductivity of sulfur can be improved and a lot of nano sulfur and polysulfide can be contained; the polysulfide can be effectively prevented from being dissolved and diffused in electrolyte, and the utilization rate of the sulfur is improved; meanwhile, the structure of the meso-porous titanium dioxide is stable and a pore channel cannot be easily damaged, so as to have buffering effects on volume expansion and retraction in a charging/discharging process of a sulfur electrode.

The invention discloses heat conduction flame retardant liquid silica gel, which comprises components with the following parts by weight: 10 to 40 parts of vinyl end organopolysiloxane with 500 to 5000 mPa.s polymeric viscosity in 25 DEG C, 10 to 40 parts of vinyl end organopolysiloxane with 10000 to 50000 mPa.s in 25 DEG C, and 1 to 5 parts of hydrogen-containing polymethylsiloxane, 2 to 8 parts of alkyl disilazane, 20 to 50 parts of surface hydrophobicity Al2O3 powder with average particle diameter of 5 to 20 microns, 10 to 50 parts of Al(OH)3 powder with average particle diameter of 5 to 20 microns, 0.3 to 2 parts of addition solidification catalyst, 0.01 to 0.06 part of alkynol depressant and 0.5 to 2 parts of distilled water, wherein, R is methyl, ethyl, propyl or butyl. The invention is prepared by the way of addition type heat vulcanization, toxic substance or irritant gas is not produced in the production process, the vulcanization rate is quick, and the energy saving, the consumption decreasing and the environmental protection requirements are conformed. The storage stability of the product is good, the viscosity is moderate, the operability is good, the product integrates the heat conduction, insulation and flame retardant performances into a whole, and the performance-price ratio is high.

A rubber composition which is crosslinkable with hot air or a hot press and gives a hot-air-crosslinked rubber sheet which receives no scratch on the surface in an HB pencil hardness test and has a compression set of 70% or lower through 22-hour heat treatment at 150 DEG C. The composition comprises: an ethylene/ alpha -olefin/unconjugated polyene random copolymer rubber wherein the unconjugated polyene is a specific norbornene compound terminated by a vinyl group; and a compound having two or more SiH groups per molecule. It may optionally contain an addition reaction catalyst comprising a platinum-group metal and a reaction inhibitor.

The electrode material includes metal oxide nanoparticles formed by applying shear force and centrifugal force to reactants containing a reaction inhibitor in a rotating reaction vessel during a chemical reaction; and carbon nanotubes with a specific area of 600 to 2600 m²/g to which shear force and centrifugal force are applied for dispersion in the rotating reaction vessel during the chemical reaction. The metal oxide particles are highly dispersed and carried on the carbon nanotubes. Preferably, the metal oxide is lithium titanate.

A process for preparing the stable nano-class cuprous oxide crystal whisker by chemical deposition method includes such steps as using reducer chosen from glucose, hydrazine hydrate, hydroxyamin hydrochloride, sodium borohydride and sulfite to reduce the 2-valence Cu ions to Cu2O in water medium, preparing micron (or nano) powder, adding crystalline growth inhibitor, controlling reaction time and condition, and treating with antioxidizing agent to obtain bar and/or needle whisker.

The invention belongs to the technical field of polymer processing, and relates to nylon and a preparation method thereof. The nylon is prepared from the following components: 1 part of dicarboxylic acid, diamine, a catalyst, a blocking agent, exchange reaction inhibitor, a nucleating agent and antioxidant, wherein the diamine and the dicarboxylic acid are equal in molar weight; the catalyst accounts for 0.001-0.1wt% of the total weight of the dicarboxylic acid and diamine; the blocking agent accounts for 0.05-1mol% of the total molar weight of the dicarboxylic acid and diamine; the exchange reaction inhibitor accounts for 0.1-5wt% of the total weight of the dicarboxylic acid and diamine; the nucleating agent accounts for 0.1-1wt% of the total weight of the dicarboxylic acid and diamine; and the antioxidant accounts for 0.001-1wt% of the total weight of the dicarboxylic acid and diamine. According to the invention, a primary polymerization product is low in viscosity, and the pressure in a kettle is high, so that pressure spray can be easily realized to prepare dry nylon polymer powder; and further polycondensation can be performed on the low-polymerization-degree nylon through melt polycondensation. Thus, the materials do not need to be further subjected to a long-time solid-phase tackifying process, thereby shortening the reaction time and improving the performance of the high-temperature nylon.

The invention concerns inhibitor compositions based on fatty sulphydryl acid and poly(ethyleneamino)imidazoline salts for considerably reducing the corrosive effect of carbon brine on iron and ferrous metals. These compositions are as efficient when the corrosive medium is driven with a high flowrate and in biphasic brine/oil medium.

Method and compositions useful for removal of mercury from a flue gas stream with relatively high concentrations of acid gas precursors and/or acid gases. The method includes contacting the flue gas stream with a multi-functional agent, where the multi-functional agent includes a salt having a cation of valency 3 or higher. A composition comprises a (1) sorbent material such as powdered activated carbon which will ultimately capture and sequester oxidized mercury, (2) a multi-functional agent that protects the sorbent core from unfavorable reaction conditions or inhibitors, oxidizes or helps catalyze the oxidation of elemental mercury, and/or amalgamates with elemental mercury to make it easier to capture, among other benefits, and optionally (3) a halogen such as in the form of a halide salt that helps facilitate the oxidation of elemental mercury into its oxidized form.

The invention relates to methods for identifying compounds which affect cellular stress. In particular, the method relates to identifying compounds which inhibit protein advanced glycation end product formation, where the compounds are carbonyl scavengers which inhibit the formation. The assay involves combing the substance of interest with histone H1 and ADP-ribose, and then measuring fluorescence and protein cross linking. Various inhibitors ofprotein AGE glycation have been identified, using this assay.

The invention relates to an organosilicon sealant for LED (light-emitting diode) packaging, belonging to the technical field of organosilicon sealants. The organosilicon sealant comprises a component A and a component B. The component A comprises 15-25 parts of divinyl polydimethylsiloxane silicon resin and 2-6 parts of platinum catalyst. The component B comprises 50-58 parts of divinyl polydimethylsiloxane silicon resin, 50-88 parts of methylhydropolysiloxane, 2-8 parts of reaction inhibitor, 30-40 parts of fumed silica, 2-10 parts of additive KH-560 and 20-25 parts of TiO2. The vinyl silicon resin, hydrogen-containing silicon oil and tetramethyltetravinylcyclosiloxane are subjected to addition reaction under the condition of the platinum catalyst to prepare the organosilicon electronic packaging adhesive with favorable comprehensive properties. The sealant is very suitable for LED packaging.

The invention relates to a polyamine inhibitor for drilling fluids and a method for preparing the polyamine inhibitor. The method comprises the steps as follows: an initiator and an acid-binding agent are placed in a reactor, under the normal pressure and the nitrogen protection, a sulfonylation agent is dripped into the reactor to conduct the sulfonylation reaction, the sulfonylation reaction is 10 to 12 hours, the sulfonylation temperature is 0 to 30 DEG C, reactants are filtered, filtrate is dissolved in the water, the lower-layer fluid is taken down after static split phase of the filtrate, water is removed through reduced pressure distillation, and end sulfo-group esters are obtained; the end sulfo-group esters are dripped into a reaction kettle filled with aminating agents and precipitating agents to conduct the amination, the reaction time is 2 to 3 hours, the amination temperature is 70 to 90 DEG C, products are filtered, solvents are removed through reduced pressure distillation, and the polyamine inhibitor is obtained; and the additive is suitable for various water-based drilling fluids, can control hydration and dispersion of clay shale well, effectively solves the problems that the drilling fluid is thickened and degraded in performance since the clay shale is hydrated and dispersed, and provides a certain guarantee for safely and efficiently drilling.

The invention relates to a resin used for polyurethane cold-resistant flexible middle/low-density shoes and a preparation method of the resin, and belongs to the technical field of polyurethane resin preparation. The method comprises the following steps of: mixing compositions A and B, foaming the mixture with a polyurethane low-pressure foaming machine, injecting into a shoe mould and molding. The composition A is a mixture of polyester polyol A1, polyester polyol A2, a diol chain extender, a catalyst, an organic silicon foam stabilizer and water; the composition B is a prepolymer obtained by chemical reaction of polyisocyanate, polyester polyol A1, polyether glycol B1, polyether glycol B2 and a secondary reaction inhibitor. The product provided by the invention can maintain flexible and cold-resistant properties in case of low density, so that the shoe is flexible and the sole is not liable to break in winter. The invention has the advantages of easily-accessible raw materials, simple process, good product reproducibility and low cost, and can achieve mass production. The foaming process adopts only water, so that the whole production process is environment-friendly.

The present invention relates to inhibitor which can inhibit the polyreaction of carbonyl compounds, such as aldehyde and ketone, and unsaturated olefin in the pyrolysis gas of the hydrocarbon cracking technique in the process of alkali cleaning. The inhibitor is composed of water-soluble polymerization inhibitor, water-soluble antioxidant, solvent and water-soluble dispersant; wherein, the molar ratio of the water-soluble antioxidant and the water-soluble polymerization inhibitor is 1 : 2 to 20; the molar ratio of the water-soluble polymerization inhibitor and the solvent is 1 : 1 to 100; the molar ratio of the dispersant and the water-soluble polymerization inhibitor is 1 : 1 to 20; the water-soluble dispersant is selected from Ca Cl2, CaF2, NaCl or NaF or any combination thereof. The inhibitor can effectively inhibit the polyreaction of carbonyl compounds, such as aldehyde and ketone, and unsaturated olefin in the pyrolysis gas in the process of alkali cleaning, and can resolve the produced polymers.

The invention relates to a preparation method of a catalyst, particularly a method for preparing nano titanium dioxide by a sol process at low temperature, which comprises the following steps: by using titanium salt as a raw material, alcohol as an organic solvent and acid as a reaction inhibitor, stirring in a reactor at room temperature to react; after reacting for some time, obtaining a sol solution; and refluxing the sol solution in a water bath for some time, washing, separating, and drying to obtain the nano titanium dioxide powder. The nano titanium dioxide prepared by the sol-gel process does not need high-temperature calcination technology, has the advantages of good product quality, simple experimental operation steps, simple experimental facilities, easily controlled reaction steps and energy-saving preparation process, and is suitable for mass production, thereby being advanced technology for preparing nano materials by a sol-gel process.