89 results about "Undecane" patented technology

The invention discloses a method for synchronously fermenting n-undecane (nC11) to highly yield eleven-carbon dicarboxylic acid (DC11) by utilizing a microorganism. The microorganism is Candida tropicalis ly-1, of which the preservation number is CCTCC (China Center for Type Culture Collection) NO. M 209223. The method is characterized in that within 28 hours after strains of the microorganism are connected to a culture medium using normal alkane as the substrate, the pH (hydrogen ion concentration) is controlled below 6.8, cell growth is taken as the principal task, and a certain amount of dicarboxylic acid is also produced; within 28 hours to 60 hours, the pH is controlled below 7.3, acid production is taken as the principal task, and a certain number of cells are also increased; and after 60 hours, the pH is controlled below 8.0, and various dicarboxylic acids are produced quickly. When the method is used for fermenting nC11 to produce DC11, the stains of the microorganism and nC11are fermented for 150 hours in a fermentation tank with a volume of 210m3; and the output of DC11 can reach up to 156g/L, the conversion rate can reach 86.7 percent, and the purity of DC11 can reach 98.2 percent.

The invention provides a visual array chip for gas analysis and application thereof. According to the visual array chip, functional modules from No.1 to No.36 are arranged on a substrate according to an array distribution mode, and the functional modules are prepared by coating the substrate with porphyrin and dye modified by gold nano-particles, porous organic silicate, plasticizer and materials having specific response to aldehyde volatile organic compounds. The visual array chip can be used for detecting and analyzing at least one volatile gas in benzene, methylbenzene, p-xylene, trimethylbenzene, trichlorofluoromethane, propyl aldehyde, hexanal, acetaldehyde, heptanal, acetone, 2-pentanone, tetrahydrofuran, heptane, decane, undecane, 1-hexene, isoprene, styrene, acetic acid, propionic acid, ethylenediamine, tetramethylethylenediamine, acetonitrile, propyl alcohol, thiol and butyl acetate compounds. The chip can be used for detecting multiple gas ingredients, has high sensitivity for detected objects with low detection limit, and can reach the ppbv detection level.

The invention discloses a high flame-retardant epoxy resin adhesive. The high flame-retardant epoxy resin adhesive comprises the following raw materials in parts by weight: 60 to 72 parts of epoxy resin, 6 to 11 parts of polyurethane, 3 to 8 parts of epoxidized soybean oil, 5 to 11 parts of nonyl phenol, 2 to 8 parts of polysulfide rubber, 15 to 24 parts of a phosphorus-containing curing agent, 2to 9 parts of tung oil anhydride, 0.8 to 2 parts of a silane coupling agent, 0.3 to 1.5 parts of tetrabutyl titanate, 7 to 15 parts of a compound filler, 2 to 3 parts of 2-methyl fluoride ethyl acrylate, 0.5 to 2 parts of dodecyl phosphate, 0.3 to 1.2 parts of triglycidyl isocyanurate, 1 to 5 parts of phosphenylic acid, 0.8 to 3 parts of 1-ethyl-3-methylimidazole diethyl phosphate, 2 to 3.4 partsof 1,8-diazabicyclo undecane-7-ene and 2 to 9 parts of butyl glycidyl ether. The high flame-retardant epoxy resin adhesive provided by the invention is high in tenacity and excellent in flame-retardant performance and heat resistance.

The invention discloses a decorative film material. The decorative film material is characterized by comprising a weather-proof protecting layer, a printing layer and a base material layer from top tobottom in sequence, wherein the printing layer is formed by printing a grease paint drawing on the base material layer by a printer; the weather-proof protecting layer and the printing layer are in layered lamination through an adhesive; the weather-proof protecting layer is prepared from a fluorosilicone carbonate contained sulfone copolymer doped with 3,3,7,7,10,10-hexaphenyl-2,4,6,8,9,11-hexaoxa-1,5-diarsa-3,7,10-trisilabicyclo[3.3.3]undecane. The invention further discloses a preparation method of the decorative film material. The decorative film material has a remarkable decorative effect, is resistant to scratching, heat and aging, has good compressive property, excellent comprehensive performance, performance stability, weather fastness, mechanical properties and flame retardance,high flatness, fine and smooth hand-feeling, higher adsorption capacity for printing ink and higher image-text definition and fastness and is safer and more environmentally friendly to use.

The invention relates to a synthetic method of 3-oxymethylene-7-oxa-2,10-diazaspiro[4,6] undecane-10-tert-butyl formate and primarily solves the technical problem that no proper industrial synthetic methods are available in the prior art. The method comprises the following three steps: S1, first dissolving a compound 1 in tetrahydrofuran and adding sodium hydride and triethyl phosphonoacetate to carry out a Wittig reaction to obtain a compound 2; S2, dissolving the compound 2, nitromethane and Tetrabutyl ammonium fluoride in tetrahydrofuran and heating the solution to react to generate a compound 3; and S3, dissolving the compound 3 ethanol and carrying out reduction and ring closing by raney nickel to obtain a compound 4; the reaction formula as shown in the description.

The invention discloses an attractant composition for agrotis ypsilon larvae and an application of the attractant composition. The attractant composition comprises the following components in parts by weight: 0.1 to 0.8 part of 2-ethylhexanol, 2 to 8 parts of (2E,6E,11Z)-3,7,13-trimethyl-10-(2-propyl)-2,6,11-cyclotetradecatriene-1,13-diol, 0.08 to 0.3 part of undecane, 1 to 3 parts of styrene, 0.8 to 2.5 parts of dibutyl phthalate and 0.1 to 0.8 part of hexadecane. The synergist provided by the invention is low in component price, can reduce the cost of making a lure, and is suitable for popularization and promotion.

The invention relates to a process for preparing spiro compounds, more particularly, relates to a synthetic process for 3, 9-diaza-2-oxo-spiro [5. 5] undecane template compounds. The invention is mainly to solve the technical problems that the existing synthetic method for 3, 9-diaza-2-oxo-spiro [5. 5] undecane has low yield and harsh reaction conditions and is not suitable for large scale product. The process comprises using N-benzyl piperidine-4-ketone A and ethyl cyanoacetate as starting material, generating dicyanocarbodiimide B in colamine solution, hydrolyzing selective decarboxylation in acid environment to obtain carbodiimide C, selectively reducing the carbodiimide C to obtain diamine D, combining the different protecting groups to obtain the target template compounds after hydrogenating and debenzyl. The invention provides a synthetic process with a short reaction line, low cost and large scale preparing value for 3, 9-diaza-2-oxo-spiro [5. 5] undecane template compounds.

The present invention relates to an efficient antirust type environmentally-friendly hydrocarbon cleaning agent and a preparation method thereof, wherein the efficient antirust type environmentally-friendly hydrocarbon cleaning agent comprises 1-5% of undecane, 90-95% of decane, 0.4-0.8% of di-n-octylamine, and 0.1-0.5% of RP333H. According to the present invention, the efficient antirust type environmentally-friendly hydrocarbon cleaning agent is mainly used for the cleaning and short-term antirust of oil stains on the surface of carbon steel, cast iron and other work-pieces, wherein the antirust cycle is up to 30 days, the cleaning and the antirust are integrated, the problem that the cleaning agent and the antirust agent in the same industry can be only subjected to single use is solved, the two requirements are met with the one product, the industrial production efficiency is substantially improved, the complex process comprising the separate cleaning and antirust is saved, and thecomprehensive production cost of the enterprise is reduced; and the efficient antirust type environmentally-friendly hydrocarbon cleaning agent has advantages of rapid cleaning, environmental protection, safety and excellent antirust property, and does not corrode metals, plastics, rubbers and other materials.

Drugs comprising a combination of triazaspiro[5,5]undecane derivatives represented by the following general formula I: I wherein each symbol is as will be defined hereinafter quaternary ammonium salts thereof, N-oxides of the same or nontoxic salts of the same with at least one cytochrome P450 isozyme 3A4 inhibitor and/or at least one P-glycoprotein inhibitor. The drugs comprising such a combination, wherein the bioavailability of the compounds represented by the general formula I is elevated, are efficaciously usable as oral preparations in treating various diseases.

The invention discloses a method for rapidly synthesizing 3,9-di(4-carboxylphenyl)-2,4,8,10-tetraoxaspiro[5.5]undecane. The intermediate 3,9-di(4-carboxylphenyl)-2,4,8,10-tetraoxaspiro[5.5]undecane is synthesized through a solvent-free technology, so the problems of high boiling point and difficult removal of a solvent N,N-dimethyl formamide are solved; a catalyst adopts a routine protonic acid, such as p-toluenesulfonic acid and hydrochloric acid, so the catalyst has low price and solves the problem of high price of a ZrCl4 catalyst; a non-acidic reactant methyl p-formylbenzoate is adopted to substitute 4-formylbenzoic acid, so a reaction is instantly finished, and the problem of long reaction time is solved; and synthesis in the invention is carried out in a two-step manner, the yield of the first step is greater than 80%, the alkaline hydrolysis and acid precipitation yield of the second step is greater than 95%, and the comprehensive yield is greater than 76%, so the yield is near 21% higher than those in literature methods, and the problem of low yield is solved.