103 results about "Heptanol" patented technology

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.

A salt of a mono- and/or dialkyl ester of a sulfonated dicarboxylic acid is provided, where the dicarboxylic acid contains 4 to 8 carbon atoms and the alkyl groups are derived from 2-propylheptanol. A composition including (a) one or more salt(s) of a mono- and/or dialkyl ester(s) of a sulfonated dicarboxylic acid(s), where the dicarboxylic acid contains 4 to 8 carbon atoms and the alkyl groups are derived from 2-propylheptanol; and (b) one or more organic solvents liquid at 20° C. with a boiling point above 250° C. at 1 bar is also provided.

The invention provides a preparation method and application of phthalic acid diester (2-propyl group heptanol), which obtain the phthalic acid diester (2-propyl group heptanol) (DPHP) through a one-step reaction with phthalic anhydride and the 2-propyl group heptanol serving as raw materials. The raw materials selected by in the preparation method and the application are easy to obtain and mild in reaction condition, the postprocessing after reaction is simple, operation is simple and convenient, chemical yield coefficient is high and the like. The preparation method is convenient in operation, saves energy, and is less in environmental contamination. Obtained products have low volatility, good thermal ageing performance, good weather fastness and good anti-mobility, and can serve as a plasticizer in the polrvinyl chloride processing process.

The invention relates to a preparation method of di(2-propylheptyl) cyclohexyl-1,2-diformate, belonging to the field of synthesis of fine chemical engineering products. The preparation method comprises the following steps: carrying out esterification reaction on hexahydrophthalic anhydride and 2-propyl heptanol by using non-protonic acid as a catalyst; and after the esterification reaction finishes, neutralizing, washing with water, dealcoholizing, and drying to obtain the di(2-propylheptyl) cyclohexyl-1,2-diformate, wherein the esterification rate is up to 99% above. The non-acid catalyst is a composite catalyst composed of tetrabutyl titanate, sodium bisulfate monohydrate or tetrabutyl titanate and sodium bisulfate monohydrate, and accounts for 0.2-4 wt% of the acid anhydride; the raw material alcohol/acid mole ratio is (2.2-3.0):1; the esterification reaction temperature is controlled at 140-230 DEG C, and the reaction time is 3-12 hours; and when the acid number is lower than 1mg KOH/g, the reaction is finished, thereby obtaining the product with nearly no color and higher esterification rate. The method has the advantages of high utilization ratio of the raw materials, high product quality, high efficiency and environment friendliness; and the di(2-propylheptyl) cyclohexyl-1,2-diformate is free of benzene ring structure, can be substituted for the phthalate-type novel environment-friendly plasticizer product, and has broad market prospects.

The invention discloses a black soybean milk flavor and a preparation method and an application thereof. The flavor comprises isovaleric aldehyde, methyl alcohol, isopentyl alcohol, hexanal, 2-methylpyrazine, furfural, trans-2-hexenal, furfuryl alcohol, hexyl alcohol, 2-heptanone, heptanal, 2-acetylfuran, 2, 5-methylpyrazine, 2, 3-dimethyl pyrazine, trans-2-heptenal, 5-methyl-furfural, benzaldehyde, heptanol, 1-octen-3-alcohol, 2-pentyl-furan, caprylaldehyde, 2-acetyl thiazole, trans-2-octenyl aldehyde, octanol, nonanal, capraldehyde, trans,trans-2,4-nonadienal, trans-2-decenal, 2-undecanone,trans,trans-2,4-heptadienal, trans-2-undecenal and propylene glycol. The method comprises the following steps: evenly mixing the above constituents, stewing and curing for 15 days, subpackaging to obtain the black soybean milk flavor. The flavor has convenient raw materials sources, mild fragrance and high naturalness, and is applied to preparing the beans products, is especially used for preparing black soybean milk beverage, not only can enhance mouthfeel, but also can better cover soil mildewed flavor brought by beans in basic materials.

The invention discloses a novel synthetic process of tris (2-propylheptyl) trimellitate. The process comprises the following steps: (1) taking raw materials according to a molar ratio of trimellitic anhydride to heptanol being 1:2.7-2.9, and taking a catalyst isopropyl titanate accounting for 0.3-0.35% of the total weight of trimellitic anhydride and heptanol; (2) taking raw materials according to a molar ratio of trimellitic anhydride to heptanol being 1:2.5-2.6, adding 80% of the catalyst into the reactor and heating for reaction; (3) continuing to heat the reaction materials to 200-220 DEG C, and adding the remaining heptanol and the catalyst isopropyl titanate into the reaction kettle for reaction; (4) decolorizing the reaction materials to obtain a crude product, and adding hydrogen peroxide accounting for 1-1.2 wt% of the whole reaction system in the decolorization process; and (5) conducting neutralization washing on the crude product with neutralization washing temperature at 105-110 DEG C, dealcoholizing and filtering to obtain a finished product of tris (2-propylheptyl) trimellitate. The process provided by the invention not only can reduce the production energy consumption but also can improve the color and grade of the finished product.

The invention discloses a novel synthesis technology of adipic acid (2-propyl heptyl) ester. The technology comprises the following steps: (1) taking adipic acid and heptanol according to the molar ratio of 1:(2.3-2.5) as raw materials, and taking a catalyst with the mass of 0.18%-0.22% of the total mass of the adipic acid and heptanol, wherein the catalyst is a mixture of isopropyl titanate and tetrabutyl titanate with the ratio of 2:1; (2) taking adipic acid and heptanol according to the molar ratio of 1:(1.8-1.9) as raw materials, placing the raw materials into a reaction kettle, adding the catalyst, and heating for an reaction for 2-3 hours; (3) heating the reaction liquid in the step (2) to be at 200-220 DEG C, and adding the remaining heptanol for complete reaction to obtain a crude product; (4) performing water washing, decoloring, and filtering on the crude product to obtain the finished product of the adipic acid (2-propyl heptyl) ester. The novel synthesis technology provided by the invention can reduce production energy consumption, and hardly generates waste water with a high COD value, thereby meeting the requirement of environment protection.

The invention discloses a crab feed added with a marine red yeast extract. The crab feed comprises the following nutritional components in percentage by weight: 38-65% of protein source raw materials,3-11% of fat source raw materials, 20-35% of sugar source raw materials, 2% -6% of the marine red yeast extract, 1% -3% of fermented aloes, 0.4% -1.5% of compound vitamins and 1-1.5% of composite mineral salt. A preparation method of the marine red yeast extract comprises the following steps: taking marine red yeast dry powder, adding distilled water, 2-phenoxy ethanol and citric acid, performingultrasonic wall breaking, adding papain for enzymolysis, centrifuging, and carrying out freeze drying on supernate to obtain the marine red yeast extract. The preparation of the fermented aloes comprises the following steps: pretreating the aloes, wherein the extraction rates of vitamin, aloin and aloe polysaccharides can be improved by 4-Methyl heptanol and phenyl salicylate; preparing a fermentation strain; and preparing the fermented aloes. The feed has the beneficial effects that the feed is high in nutritive value, promotes the growth of crabs, and has the effect of improving the immunity.

The invention provides a method for producing a cold-resistant plasticizer through industrial byproduct nylon acid, and belongs to the technical fields of comprehensive utilization of the nylon acid and preparation of plasticizers. According to the method, the industrial byproduct nylon acid is used for replacing the expensive long-chain fatty acid to be used as the raw material to react with novel alcohol, namely 2-propyl heptanol, for high-molecular plasticizer to realize the preparation, thus the byproduct can be reasonably recycled, the problem due to pollution of the wastes to the environment can be solved, and the cost can be greatly reduced. The method adopts the process of dealcoholizing firstly and water washing secondly, so that the production process can be simplified, the energy consumption can be saved, and the production period can be shortened. The method is remarkable in economic benefit and social benefit; and the cold-resistant plasticizer has the advantages of being high in compatibility with PVC (Polyvinyl Chloride) and excellent in plasticity and cold resistance, and meets the requirements of product processing and application.

The invention discloses a novel efficient energy-saving environment-friendly flotation reagent, and belongs to the technical field of coal washing. The flotation reagent comprises, by weight, 30-70 parts of diesel, 10-50 parts of octanol, 25-45 pars of heptanol, and 15-35 parts of 2-ethyl hexanol. The flotation reagent is nontoxic, efficient, high in safety, and high in foaming and collecting performance, has no irritating smell, saves energy, is 0.1-0.5 kg in per ton of coal slime, is low in using amount, saves coal dressing cost, and improves clean coal productivity.

A hydrocatalyst for preparing heptanol from heptanal by hydrogenation is an efficient low-Ni one composed of non-crystal Ni-B alloy (1-15 wt.%) and carrier (85-99 wt.%). It is applied at 100-300 deg.C and 0.1-4.0 /hr for space speed of liquid under 0.5-4.0 MPa and (5-80):1 for hydrogen/aldehyde ratio. Its advantages are high transform rate and high selectivity.

The invention discloses a novel synthesis process of octyl 2-propylheptyl phthalate. The process comprises steps as follows: (1), raw materials are taken in a molar ratio of phthalate to alcohol of 1: (2.5-2.7), a catalyst, namely, titanium, is taken according to the amount accounting for 0.3%-0.35% of the total mass of phthalate and alcohol, and alcohol is a mixture of heptanol and octanol in a molar ratio of 1:1; (2), all phthalate, all heptanol and 50% of the catalyst are put into a reaction kettle, nitrogen is fed into the reaction kettle, and the reaction kettle is heated to the temperature of 200-220 DEG C for reaction; (3), all octanol and the residual catalyst are put into the reaction kettle, the reaction continues, and a crude product is obtained until a complete reaction is finished; and (4) after the crude product is washed with water and dealcoholized, activated carbon is used for decoloration, and a finished product is obtained after impurities are filtered. According to the process, nitrogen is used for protection, the condition that an esterification reaction is oxidized at the high temperature is prevented, the chroma grade of octyl 2-propylheptyl phthalate synthetized with the process is better, and the product quality is more stable.

The invention relates to a method for synthesizing mefenpyr-diethyl, sequentially comprising the following steps of: allowing esterification reaction of haloacetic acid and 2-heptanol in the presence of catalyst to obtain haloacetic acid-2-heptanol, and allowing condensation reaction of the haloacetic acid-2-heptanol, 5-chloro-8-hydroxyquinoline and potassium carbonate at a molar ratio of 1:(1-1.2):(1-4) in a solvent by heating, stirring and refluxing for 2.5-8 hours to obtain mefenpyr-diethyl. The solvent is toluene or a mixture of toluene and dimethyl formamide. The synthetic method has the advantages of short synthetic route, high yield, and low cost.

The invention relates to a method for treating wastewater in a 2-propyl heptanol production device, and mainly solves the problem of great load of a wastewater treatment plant in the wastewater treatment process in the prior art. The method for treating wastewater in the 2-propyl heptanol production device comprises the following steps that (1) wastewater enters concentration bag equipment; concentrated liquid obtained by the concentration bag equipment is cooled by a cooler and then enters an acidification tank; water concentrated by the concentration bag equipment enters a biochemical treatment plant for biochemical treatment; (2) the concentrated liquid at an outlet of the acidification tank enters a chromatography device to obtain an organic phase and a water phase; (3) the organic phase enters a rectifying tower; valeric acid is obtained at the top of the rectifying tower; heavy ingredients of a rectification tower kettle enter an incinerator; the water phase enters an evaporativecrystallization device to obtain water and solid salts, wherein the water returns to the concentration bag equipment for reuse. The technical scheme better solves the problems, and can be used for wastewater treatment in the 2-propyl heptanol production device.

A catalyzing and decoloring integrated method for synthesizing environment-friendly plasticizer triethylhexyl (2-propylheptyl) citrate belongs to the technical field of chemical synthesis. The method comprises: taking p-toluenesulfonic acid as an active central body, immobilizing the p-toluenesulfonic acid on an active carbon to prepare a heterogeneous catalyst, taking citric acid monohydrate or anhydrous citric acid and 2-propyl heptanol as main reaction materials, using the heterogeneous catalyst for catalyzing and decoloring, taking cyclohexane as a water carrying agent, stirring and raising the temperature to 110-150 DEG C to conduct an esterification reaction, reducing the pressure and distilling to remove excess ethanol after the reaction is over, separating the heterogeneous catalyst from a reaction system, filtering the catalyst, and neutralizing, washing with alkali, washing with water and drying a crude product, so as to obtain a finished product of the triethylhexyl (2-propylheptyl) citrate. The selected raw materials are easy to get and cheap, high in catalytic activity, good in selectivity, and high in esterification yield; the used catalyst can be recycled and is not obviously corrosive; the method integrates catalyzing and decoloring, is simple in operation and is economic and environment-friendly; in addition, the obtained product is free from toxic, good in plasticity and thermal stability and small in mobility, and is not easy to volatilize.

The invention discloses a synthetic method for 4-amino diheptyl phthalate. The method is characterized in that: 4-nitro phthalic acid is adopted as a raw material, and is subjected to a esterification with heptanol to prepare 4-nitro diheptyl phthalate; a nitro group is introduced into a benzene ring of the 4-nitro diheptyl phthalate, then the nitro group is subjected to a reduction reaction to obtain a active amino capable of combination with proteins to synthesize the 4-amino diheptyl phthalate. The method provided by the present invention has advantages of simple route, low cost and convenient application.