1036 results about "Propanol" patented technology

Implanted catheters are locked with a solution comprising a lower alcohol, typically ethanol, propanol, or butanol, most preferably isopropanol, and an additive, the additive comprising an anti-microbial, typically taurolidine or triclosan, or an anti-coagulant, typically riboflavin, sodium citrate, ethylene diamine tetraacetic acid, or citric acid. The use of an alcohol and additive solution can effectively reduce fouling of the catheter, particularly clotting and thrombus in intravascular catheters, as well as reduce the risk of infection. The risk of infection can be further reduced by employing a catheter body which is sufficiently porous to permit the anti-microbial solution of a lower alcohol and another anti-microbial or anti-coagulant compound to penetrate into the catheter body and preferably through the catheter into tissue surrounding the implanted catheter.

The use of collagen as a biomedical implant raises safety issues towards viruses and prions. The physicochemical changes and the in vitro and in vivo biocompatibility of collagen treated with heat, and by formic acid (FA), trifluoroacetic acid (TFA), tetrafluoroethanol (TFE) and hexafluoroiso-propanol (HFIP) were investigated. FA and TFA resulted in extensive depurination of nucleic acids while HFIP and TFE did so to a lesser degree. The molecules of FA, and most importantly of TFA, remained within collagen. Although these two acids induced modification in the secondary structure of collagen, resistance to collagenase was not affected and, in vitro, cell growth was not impaired. Severe dehydrothermal treatment, for example 110° C. for 1-3 days under high vacuum, also succeeded in removing completely nucleic acids. Since this treatment also leads to slight cross-linking, it could be advantageously used to eliminate prion and to stabilize gelatin products. Finally, prolonged treatment with TFA provides a transparent collagen, which transparency is further enhanced by adding glycosaminoglycans or proteoglycans, particularly hyaluronic acid. All the above treatments could offer a safe and biocompatible collagen-derived material for diverse biomedical uses, by providing a virus or prion-free product.

A method for providing an anhydrous route for the synthesis of amine capped coinage-metal (copper, silver, and gold) nanoparticles (NPs) using the coinage-metal mesityl (mesityl=C₆H₂(CH₃)₃-2,4,6) derivatives. In this method, a solution of (Cu(C₆H₂(CH₃)₃)₅, (Ag(C₆H₂(CH₃)₃)₄, or (Au(C₆H₂(CH₃)₃)₅ is dissolved in a coordinating solvent, such as a primary, secondary, or tertiary amine; primary, secondary, or tertiary phosphine, or alkyl thiol, to produce a mesityl precursor solution. This solution is subsequently injected into an organic solvent that is heated to a temperature greater than approximately 100° C. After washing with an organic solvent, such as an alcohol (including methanol, ethanol, propanol, and higher molecular-weight alcohols), oxide free coinage NP are prepared that could be extracted with a solvent, such as an aromatic solvent (including, for example, toluene, benzene, and pyridine) or an alkane (including, for example, pentane, hexane, and heptane). Characterization by UV-Vis spectroscopy and transmission electron microscopy showed that the NPs were approximately 9.2±2.3 nm in size for Cu°, (no surface oxide present), approximately 8.5±1.1 nm Ag° spheres, and approximately 8–80 nm for Au°.

Mixed alcohols can be used as a fuel additive in gasoline, diesel, jet fuel or as a neat fuel in and of itself. The mixed alcohols can contain C₁-C₅ alcohols, or in the alternative, C₁-C₈, or higher, alcohols in order to boost energy content. The C₁-C₅ mixed alcohols contain more ethanol than methanol with amounts of propanol, butanol and pentanol. C₁-C₈ mixed alcohols contain the same, with amounts of hexanol, heptanol and octanol. A gasoline-based fuel includes gasoline and the mixed alcohols. A diesel based fuel includes diesel and the mixed alcohols. A jet fuel includes kerosene and the mixed alcohols. The neat fuel of the mixed alcohols has an octane number of at least 109 and the Reid Vapor Pressure is no greater than 5 psi. The gross heat of combustion is at least 12,000 BTU's/lb.

The invention relates to a sulfur removal agent suitable for the production of an oil-gas well. The sulfur removal agent comprises the following components in percentage by mass: 10 to 25 percent of hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine, 5 to 20 percent of alcohol amine, 5 to 20 percent of small molecular alcohol and the balance of water. The alcohol amine is one or a mixture of more thantwo of monoethanolamine, ethyleneglycol amine, diisopropanolamine, methyldiethanolamine and triethanolamine; and the small molecular alcohol is one or a mixture of more than two of methanol, ethanol and propanol. The sulfur removal agent has a simple formula, can be soluble with water, and can effectively reduce the content of hydrogen sulfide in crude oil or natural gas; simultaneously, productsgenerated by the sulfur removal agent and the hydrogen sulfide are water-soluble, and cannot block a mineshaft and influence the normal production of the oil-gas well; and the sulfur removal agent can achieve effects at the temperature of 30 to 120 DEG C and can be quickly reacted with the hydrogen sulfide.

Compositions and lures are described which provide vapor blends of acetic acid and one or more compounds selected from the group consisting of isobutanol, racemic 2-methyl-1-butanol, S-(-)-2-methyl-1-butanol, 2-methyl-2-propanol, heptyl butyrate, and butyl butyrate which function as highly effective attractants for yellowjacket wasps and paper wasps. By attracting wasps to traps or baits, the chemical attractants provide a means for detecting, surveying, monitoring, and controlling the wasps.

The invention discloses a process for extracting litchi polyphenol from litchi through dissolvent abstraction, concentrating, separation and purification, and drying, wherein water or low carbon alcohols such as methanol, ethanol, propanol, isopropanol, butanol and amylic alcohol are used as the dissolvent.

The invention belongs to the technical field of chemical engineering, and discloses polyether modified organic silicone oil that adopts a comb structure shown in formula (1) and a preparation method and application as a defoamer, and overcomes the service restrictions of conventional organic silicone defoamers. The preparation method comprises the following steps: compounds such as short polyols polydimethyl siloxane or polymethyl phenyl siloxane in which end groups are hydrogen, allyl alcohol polyether, aliphatic esters or alkanes amides that contain end alkenyl are selected as raw materials to synthesize the polyether modified organic silicone oil. According to the invention, as a defoamer, the polyether modified organic silicone oil has good characteristics of self-emulsifying property, self-dispersing property, steady emulsifying property, good defoaming and foam inhibiting performance, high temperature resistance, and acid and alkali resistance.

A process for the preparation of an organosilicon condensate which comprises reacting together a silicon containing compound having at least one silanol group and a silicon containing compound having at least one —OR group or at least one silanol group (or a compound having both groups) in the presence of strontium oxide, barium oxide, strontium hydroxide or barium hydroxide and optionally a solvent such as water, methanol, ethanol, 1-propanol, 2-propanol, 1-butanol and 2-butanol, acetone or toluene.

A method for synthesizing propylene glycol methyl ether relates to a method for synthesizing propylene glycol methyl ether. The method of the invention settles the problems of high reaction temperature, high pressure, low activity of catalyst and low selectivity existing in the prior method for preparing propylene glycol methyl ether. The method comprises the following steps: 1. preparing a compound A; 2. preparing a compound B; and 3. after naturally cooling the mixed solution B to a room temperature, atmospherically distilling and obtaining the propylene glycol methyl ether. The method of the invention has the advantages of simple process, applicable whole reaction in the condition of normal pressure and low-temperature, 93.3%-94.2% of epoxy propane conversion rate, 98.1%-99.1% of product selectivity, and no environment pollution as the whole reaction process is executed under the condition of no dissolvent. The propylene glycol methyl ether (1-methoxy-2-propanol or 2-methoxy-1-propanol) synthesized according to the invention can be synthesized by regulating the mixed liquid of acetate methyl glyoxaline hydroxide or acetate methyl glyoxaline chloride and ferric trichloride.

The present invention relates to a salt of carvedilol and/or corresponding solvates thereof, compositions containing such carvedilol and/or corresponding solvates thereof, and/or methods of using the aforementioned compound(s) in the treatment of certain disease states in mammals, in particular man. The present invention further relates to carvedilol phosphate salts, and/or solvates thereof, which include a novel crystalline form of carvedilol dihydrogen phosphate (i.e., which is the dihydrogen phosphate salt of 1-(carbazol-4-yloxy-3-[[2-(o-methoxyphenoxy) ethyl]amino]-2-propanol) and/or carvedilol hydrogen phosphate, etc.) and/or other corresponding solvates thereof, compositions containing these carvedilol phosphate salts and/or solvates, and methods of using the aforementioned salts and/or solvates to treat hypertension, congestive heart failure and angina, etc.

The invention relates to a method for preparing a cationic grafting agent with multi-reactive groups, which comprises the following steps: adding N,N-dimethyl diaminopropane or N,N-dimethylaminoethanol and hydrochloride solution of N,N-dimethylamino propanol into cyanuric chloride water suspension at the temperature of 0-10 DEG C, leading the molar ratio of cyanuric chloride to the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol and the N,N-dimethylamino propanol to be 1: 0.34, using base for adjusting and controlling the pH to be 3-4, increasing the temperature to 35-45 DEG C after full reaction, and further adding the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol, leading the molar ratio of the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol to the cyanuric chloride to be 0.4:1, using hydrochloric acid for adjusting the pH to be 1-2 after full reaction, increasing the temperature to 70-85 DEG C, adding epichlorohydrin, leading the molar ratio of the epichlorohydrin to the cyanuric chloride to be 0.7:1, and obtaining a monochlorotriazine ammonium chloride derivative. The grafting agent is used for graft modification of fabric, thereby improving the dyeing effect.

The invention relates to method and equipment system for separating and recovering organic oxygen-containing compounds in a Fischer-Tropsch synthesis water phase. The equipment system is integrated by adopting twelve towers including a mixed acid cutting tower, an acetaldehyde rectifying tower, a methanol/ethanol dividing tower, a methanol extraction rectifying tower, a methanol rectifying tower, an acetaldehyde removing tower, an ethanol tower, a propanol concentration extracting tower, a propanol intermittent azeotropic distillation tower, a carboxylic acid extraction tower, a carboxylic acid intermittent rectifying tower and an extraction agent recovering tower matched with the carboxylic acid extraction tower for use. By applying the method and equipment system disclosed by the invention, more than ten kinds of organic oxygen-containing compounds such as acetaldehyde, acetone, methanol, ethanol, normal propyl alcohol, normal butanol, acetic acid, metacetonic acid, butyric acid, butanone and the like can be separated from raw materials; and the products can respectively reach the industrial purity. The method and equipment provided by the invention are economic, effective and reasonable; and according to the method and equipment, efficiency of Fischer-Tropsch synthesis industrial enterprises can be greatly increased, production cost is reduced and goal of clean production can be achieved.

The present invention relates to extraction process of separating dihcloro propanol from hydrochloric acid aqua of dihcloro propanol in the dihcloro propanol yield over 90 % and the dihcloro propanol content in the extracted water phase lower than 0.05 %. The extraction equipment has simple structure, great treating capacity and low power consumption, and the extraction process has environment friendship, high dihcloro propanol recovering rate and is suitable for continuous industrial production. The present invention also provides the way of extracting other organic matter from hydrochloric acid aqua.

A process of producing a universal synthetic based gasoline fuel additive that cleans the fuel system including valves surface, lubricates the fuel pump, injectors and valves while allowing for a clean and more efficient burn. A major portion will consist of (a) Alfa-Olefins, (b) 2-propanol (c) Hydrolsomerized High VI HT Base Oils, (d) Dimethyl Ketones, (e) Low Flash Mineral Spirits, (f) Low Aromatic Solvent, (g) Isomer Reformate, (h) Solvent Activated Dye. In a preferred embodiment, this universal synthetic gasoline conditioner additive for improving lubrication comprises: alpha-olefins comprising from 5 to 30 percent thereof, by weight; low odor aromatic solvents comprising from 3 to 27 percent thereof, by weight; 2-Propanol comprising of 3 to 30 percent thereof, by weight; and at least one a base oil comprising from 0.50 to 15 percent thereof, by weight; wherein: the percentages by weight are specified in relative proportion to one another.

The invention discloses an amphiphilic triblock copolymer with acid sensitivity and a preparation method and an application thereof. The preparation method comprises the following steps of: modifying polyethylene glycol with a hydroxyl group at the end to enable the structure of polyethylene glycol to contain a diazido ethyl diacetal end group, namely polyethylene glycol contains the diazido ethyl diacetal group at the end; carrying out ring-opening polymerization on cyclic ester monomers by utilizing propargyl alcohol as an initiator and stannous caprylate as a catalyst to obtain biodegradable polyester with alkynyl at the single end; and finally, under the action of a 'click' chemical catalyst and ligand, carrying out 'click' chemical reaction on polyethylene glycol containing the diazido ethyl diacetal group at the end and the biodegradable polyester with alkynyl at the end to obtain the biodegradable amphiphilic triblock copolymer with acid sensitivity. The biodegradable amphiphilic triblock copolymer with acid sensitivity has good biocompatibility, biodegradability and acid sensitivity, and can be used as a drug carrier.

Implanted catheters are locked with a solution comprising a lower alcohol, typically ethanol, propanol, or butanol, in a range from 1% to 99% by volume, and an additive in a range from 1% to 99% by volume, the additive comprising an anti-microbial, typically taurolidine or triclosan, or an anti-coagulant, typically riboflavin, sodium citrate, ethylene diamine tetraacetic acid, or citric acid. The use of an alcohol and additive solution can effectively reduce fouling of the catheter, particularly clotting and thrombus in intravascular catheters, as well as eradicate existing infections and/or reduce the risk of potential infections. Existing infections and/or potential infections can be further reduced by employing a catheter body which permits an anti-microbial solution to penetrate into the catheter body and preferably through the catheter into tissue surrounding the implanted catheter.

A dry etching method in which a plasma of an etching gas is generated and a magnetic material is dry-etched using a mask material made of a non-organic material, wherein an alcohol having at least one hydroxyl group is used as the etching gas. The alcohol used as the etching gas has one hydroxyl group such as an alcohol selected from the group including methanol (CH₃OH), ethanol (C₂H₅OH) and propanol (C₃H₇OH).

The invention relates to a polyol for foamed plastic and polyisocyanurate foamed plastic adopting the same. A preparation method of the polyol for foamed plastic comprises the following step of: undergoing an etherifying reaction on highly-hydroxymethylated melamine and a unitary alcohol, wherein the hydroxymethylation degree of the highly-hydroxymethylated melamine is not less than 5.5; the unitary alcohol is one or a mixture of more than two of methanol, ethanol, propanol and butanol in any ratio; and the hydroxyl value of the polyol for the polyisocyanurate foamed plastic is 160-650 mg KOH/g. As an improvement, the preparation method of the polyol further comprises the following steps of: mixing an etherification reaction product with an alcohol-amine compound containing a -NH radical for undergoing a dehydrating reaction, and vacuumizing to remove water generated by the reaction; and adding excessive oxyalkylene hydrocarbon for undergoing a ring opening reaction. When the polyol for foamed plastic is taken as a raw material for preparing the polyisocyanurate foamed plastic, the flame resistance of the polyisocyanurate foamed plastic can be effectively improved.

Purification process of iohexol comprising the treatment of said product with 1-methoxy-2-propanol either alone or mixed with other solvents.

The present invention relates to a natural deodorant system and a natural system for topical and systemic delivery of active ingredients, both systems being primarily free of, preferably substantially free of, more preferably essentially free of, and most preferably completely free of ethoxylates or other petrochemical derivatives, and comprising: (a) at least one of (1) glycerine (preferably of plant origin), (2) a polyol selected from the group consisting of galactitol, erythritol, inositol, ribitol, dithioerythritol, dithiothreitol, (3) a sugar alcohol, selected from the group consisting of mannitol, sorbitol, xylitol and maltitol, (4) a hydrogenated starch hydrosylates of at least one of berries, apples or plums, and (5) mixtures thereof; (b) water or a lower monohydric alcohol, selected from the group of methanol, ethanol, propanol and isoproponal, or mixtures thereof, present at a combined concentration of at least 20%; (c) one or more carrageenans (preferably of plant origin) or alginates, or mixtures thereof, present in combined concentrations of less than about 2%; and (d) optionally, one or more thickeners or gums selected from the group consisting of tara, guar, xanthan, Arabic, tragacanth, agar, locust bean gum, ghatti and microcrystalline celluloses.

The invention relates to a metal oxide nanometer material for treating wastewater containing dyes or heavy metal ions, a preparation method and application thereof. Compositions of the metal oxide nanometer material is one or a mixture of more than two of CaO, ZrO2, SiO, ZnO, TiO2, MgO, Fe2O3 and NiO. The preparation method comprises the following steps: dissolving one or a mixture of more than two of calcium nitrate containing crystallization water, zirconium nitrate, ethyl orthosilicate, zinc nitrate, butyl titanate, magnesium nitrate, ferric nitrate and nickel nitrate into methanol, ethanol or propanol, adding a phenylcarbinol or benzylcarbinol structure-directing agent into the obtained solution, moving the mixture into a high-pressure kettle after the mixture is mixed evenly, heating the mixture to between 120 and 200 DEG C for 2 to 6h to ensure that nitrate is completely alcoholized under the protection of chlorine gas with the pressure of between 10 and 1.5*10 Pa, then heating the mixture to between 261 and 269 DEG C for 15h, drying the obtained product, and then performing high-temperature roasting at a temperature of between 300 and 500 DEG C to obtain the metal oxide nanometer material. The metal oxide nanometer material is added into the wastewater containing the dyes or the heavy metal ions to ensure that the metal oxide nanometer material and the wastewater are fully contacted to decolorize, absorb or degrade the wastewater containing the dyes.

A stable method for producing liquid products such as ethanol, propanol, butanol and other chemicals from syngas components that contacts CO or a mixture of CO₂ and H₂ with a highly porous side of an asymmetric membrane under anaerobic conditions and transfers these components into contact with microorganisms contained within bio-pores of the membrane. A liquid contacting side of the membrane utilizes a dense layer to control hydration of the bio-pores with a liquid phase. The gas feed directly contacts the microorganisms in the bio-pores and maximizes their utilization of the syngas. Metabolic products produced by the microorganisms leave the membrane through the side opposite the entering syngas. This method establishes a unitary direction across the membrane for the supply of the primary feed source to the microorganisms and the withdrawal of metabolically produced products. The feed and product flow improves productivity and performance of the microorganism and the membrane.

The invention relates to a synthetic method of 2-methallyl alcohol. The synthetic method comprises the step of carrying out esterification reaction, refinement and separation and hydrolysis reaction on 2-methallyl chloride and sodium carboxylate to prepare 2-methallyl alcohol, wherein the formulas of the esterification reaction and the hydrolysis reaction are respectively formula (1) and formula (2) both referring to the description; the R is CH3 or CH3CH2, namely, methyl or ethyl. According to the invention, the synthetic method is reasonable in technology and easy to operate; the product is high selectivity and relatively high in quality; carboxylic sodium in the esterification reaction stage and water in the hydrolysis reaction stage are recycled and need no external supplement, so that cyclic utilization is achieved, and the product yield is improved.

The present invention relates to proteins having an enzymatic activity of reducing substituted alkanones such as 3-methylamino-1-(2-thienyl)-propan-1-one. The invention furthermore relates to nucleic acids coding for said proteins, nucleic acid constructs, vectors, genetically modified microorganisms and to methods for preparing substituted (S)-alkanols, such as, for example, (S)-3-methylamino-1-(2-thienyl)-(S)-propanol.

The present invention relates to proteins having an enzymatic activity of reducing substituted alkanones such as 3-methylamino-1-(2-thienyl)-propan-1-one. The invention furthermore relates to nucleic acids coding for said proteins, nucleic acid constructs, vectors, genetically modified microorganisms and to methods for preparing optically active substituted alkanols, such as, for example, (S)-3-methylamino-1-(2-thienyl)-(S)-propanol.

A method for controlling pests and weeds on or around plants, especially crop plants. The method includes admixing 2-propenal or other related enal compounds to form an aqueous solution, and applying the aqueous solution to plants, plant seeds, weeds, or soil around the around the area in which the plants grow. The aqueous solution contains about 1 to about 1350 parts of the active compound per million parts of water, and is applied to the soil in amounts of from about 75 pounds to about 800 pounds of active compound per acre of soil. At lower application rates of from about 1 pound to about 100 pounds of the active compound per acre of soil, 2-propanol and related enal compounds have the beneficial effect of enhancing the growth of the plants. In addition, application of these enal compounds also helps in reducing transplant shock of tomato plants.

A process of producing a universal synthetic based gasoline fuel additive that cleans the fuel system including valves surface, lubricates the fuel pump, injectors and valves while allowing for a clean and more efficient burn. A major portion will consist of (a) Alfa-Olefins, (b) 2-propanol (c) Hydroisomerized High VI HT Base Oils, (d) Dimethyl Ketones, (e) Low Flash Mineral Spirits, (f) Low Aromatic Solvent, (g) Isomer Reformate, (h) Solvent Activated Dye. In a preferred embodiment, this universal synthetic gasoline conditioner additive for improving lubrication comprises: alpha-olefins comprising from 5 to 30 percent thereof, by weight; low odor aromatic solvents comprising from 3 to 27 percent thereof, by weight; 2-Propanol comprising of 3 to 30 percent thereof, by weight; and at least one a base oil comprising from 0.50 to 15 percent thereof, by weight; wherein: the percentages by weight are specified in relative proportion to one another.

The instant invention describes a method for crystallizing (−)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one from a solvent and anti-solvent solvent system and producing the crystalline product. The desired final crystal form, Form I, can be produced when using methanol or ethanol. Form II is isolated from 2-propanol and can be converted to the desired crystal form at low drying temperatures, such as between about a temperature of 40° C. and 50° C.

The invention discloses a long-chain alkyl phenyl modified hydrogen containing silicone oil releasing agent preparation method. The method includes the steps of subjecting tetramethyl tetra-hydrogen cyclotetrasiloxane and a catalyst of chloroplatinic acid to reaction, dropping styrene for reaction for some time, dropping long-chain alpha-olefin and a chloroplatinic acid isopropyl propanol solution to obtain an intermediate product of tetramethyl alkyl phenyl cyclotetrasiloxane, subjecting the obtained intermediate product of tetramethyl alkyl phenyl cyclotetrasiloxane, octamethylcyclotetrasiloxane, hexamethyldisiloxane and an acid catalyst to full reaction, fully cooling the obtained liquid, slowly adding calcium hydroxide to adjusting the PH value to 6-7, filtering out solids produced in neutralization with a vacuum pump, adding anhydrous magnesium sulfate to adsorb water produced in neutralization, and filtering to obtain a long-chain alkyl phenyl modified hydrogen containing silicone oil releasing agent. The long-chain alkyl phenyl modified hydrogen containing silicone oil releasing agent prepared through the preparation method has the advantages of being simple in process, high in efficiency, low in cost, short in cycle and the like.