40 results about "2-Octanol" patented technology

The invention discloses a continuous esterification production method of di-sec-octyl phthalate. The method comprises the following steps: using phthalic anhydride and 2-octanol to perform an esterification reaction under the existence of catalyst and obtain raw ester, and post-processing raw ester to obtain the product di-sec-octyl phthalate, wherein the esterification reaction is a multistage esterification reaction that phthalic anhydride and 2-octanol perform a plurality of esterification continuously. The esterification reaction of the invention adopts the production method of continuous esterification, the esterification reaction is complete, the conversion rate is high, the acid value of the product is low and the purity is high; and the time of esterification is short, the energy consumption is low, the product quality is stable, and the quality and production efficiency of di-sec-octyl phthalate can be effectively increased.

(R)-2-octanol dehydrogenase that catalyzes oxidation/reduction reactions using NAD+(NADH) as a coenzyme. The enzyme can be obtained from microorganisms of the genus Pichia, Candida, Ogataea and the like. Using this (R)-2-octanol dehydrogenase to reduce ketones can produce alcohols, especially (S)-4-halo-3-hydroxybutyrate and (R)-propoxybenzene derivatives. Moreover, the (R)-2-octanol dehydrogenase has excellent activity and stereoselectivity.

The invention discloses a method for synthesizing [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acid by using a one-pot method. The method comprises the following steps of: carrying out esterification reaction between glycolic acid and DL-2-Octanol under the action of a catalyst (I), subsequently feeding [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acid, an acid-binding agent and a catalyst (II), heating and keeping the temperature till the condensation reaction is completely accomplished, and carrying out aftertreatment so as to obtain [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acid. The method has the beneficial effects that firstly, the five main steps of the conventional preparation method are reduced to three steps, and the catalysts are introduced, so that the yield is kept be at a higher level, the raw material consumption is reduced, and the cost is lowered; secondly, the steps of separation and drying are canceled, so that the equipment consumption and the energy consumption are reduced, and no pyridol compounds which have serious pollution to the environment are generated, thereby being environmental-friendly; and thirdly, the preparation method is simple in process, simple and convenient to operate and high in yield, and is applicable to large-scale industrial production.

The invention discloses a method for identifying a wine country on the basis of a metabonomics research means, and belongs to the technical field of wine country identification. The method comprises the main steps of: (1) extracting a volatile component of a wine sample by utilizing a solid-phase micro extraction technology; (2) analyzing the volatile component of wine by utilizing a gas chromatography-mass spectrometry combined technology to obtain a reconstructed total ion chromatogram; (3) carrying out retrieval and analysis by NIST2014, WILEY8.0 spectrum library to obtain compound information corresponding to each peak, and representing relative content of each substance with a ratio of an area of each compound peak to an area of an internal labeled 2-octanol peak; (4) establishing PCA and OPLS-DA models by utilizing SIMCA13.0, and finding out different metabolism. The wine country tracing method disclosed by the invention is simple to preprocess, simple and convenient to operate, high in identification rate and beneficial to health development of the wine market.

A film-forming composition formed by solubilizing higher concentrations of polyanhydride resins using a mixture of a fatty acid triglyceride derivative and a diester of 2-Octanol and Adipic Acid. In one embodiment, a composition in accordance with the invention comprises between about 1% and 55% by weight of Furandione (2,5)-Polymer with 1-Octadecene; between about 10% and 35% by weight of Dicapryl Adipate; and between about 10% and 35% by weight of Methyl Acetyl Ricinoleate. Such a composition may impart a water resistant property to oil-in-water and water-in-oil emulsions, and to anhydrous solid and semi-solid preparations, while remaining solubilized, stable and pourable at 25° C.

The invention relates to a method and a device for preparing lincomycin hydrochloride. On the basis of the prior lincomycin hydrochloride production, repurifying processing procedure is added to prepare lincomycin hydrochloride with lincomycin B component less than or equal to 0.1 percent. The method is characterized by comprising the following steps: lincomycin hydrochloride with B component less than or equal to 1.0 percent is dissolved to have thetconcentration of 80000-100000 microgramme/ml, the pH value is adjusted to 10-11, extraction is carried out in extraction tower with 1/2-1/3 (weight ratio) of 2-octanol, the extraction temperature is 20-30 DEG C, the pH value of extraction liquid is adjusted to 2-4 by hydrochloric acid for back extraction, and acetone is used for crystallization. By adopting the method and the extraction tower device, the concentration of B component in lincomycin hydrochloride can be effectively reduced to be less than or equal to 0.1 percent, so that the quality of lincomycin hydrochloride is improved, and the yield is increased by 5-7 percent.

The invention discloses a method for preparing fumaric acid ester by using plant straws. The method comprises the following sequential steps: 1) leading the plant straws to carry out acid hydrolysis reaction so as to prepare furfural; 2) leading the furfural to carry out oxidation reaction so as to prepare fumaric acid; and 3) leading the fumaric acid and 2-octanol to carry out esterification reaction so as to prepare the fumaric acid ester. The 2-octanol fumaric acid ester prepared by the method not only is the main indispensable raw material for producing novel high-performance synthetic lubricating oil polyester oil, but also has high product purity and high yield; and in addition, the invention also opens up a new material resource and method for producing the 2-octanol fumaric acid ester, and provides a practical way for industrial production of the 2-octanol fumaric acid ester and the plant straws and comprehensive utilization of the plant straws.

This invention discloses a method for synthesizing 10-hydroxyl capric acid. The method comprises: dropping a mixture of castor oil and 2-octanol into a mixed system of 2-octanol and alkali already subjected to microwave radiation, reacting at a high temperature, washing the product with water, extracting with water, acidifying, filtering, and separating to obtain 10-hydroxyl capric acid. The method utilizes microwave to synthesize 10-hydroxyl capric acid, and can selectively heat the target compound, thus has such advantages as high heating efficiency, low energy consumption, short reaction time, normal pressure reaction and high safety.

The invention discloses an extraction and boron removal method for lithium-containing brine. The extraction and boron removal method comprises the following steps that 1, acidification is performed, wherein the pH value of a lithium chloride water solution containing boron is acidized to 1-3 by using hydrochloric acid; 2, mixing and extraction are performed, wherein isooctyl alcohol and 2-octanol are mixed according to the ratio of 10-18 to 1 to obtain an octanol mixed solution; the octanol mixed solution is mixed with kerosene to prepare a mixed extracting agent, the kerosene accounts for 30-70% of the total volume of the mixed extracting agent, and standing is performed for 1-3 hours after the acidized lithium chloride water solution containing boron and the mixed extracting agent are fully mixed; 3, phase splitting is performed, wherein a mixed liquid phase of the lithium chloride water solution containing boron and the mixed extracting agent is divided into an oil phase and a first water phase after standing; 4, recovery is performed, wherein the first water phase is guided out, the boron content is detected, the first water phase is re-guided back to the step 2 under the situation that the boron content exceeds the standard and serves as lithium chloride water containing boron to perform extraction, the operation is repeated till the boron content of the water phase is up to the standard. The lithium-containing brine can be extracted in a low-cost and efficient mode, treated waste water can be secondarily utilized, and environmental pollution can be reduced.

The invention discloses a method for preparing high optical pure (R)-2-octanol by a microbiological method, and a microorganism thereof. An immobilized-cell synthesis method of the invention has the advantages that: 1, compared with free cells, immobilized cells can greatly improve the physical-chemical stability of enzyme, have excellent catalytic effect and can be repeatedly used; 2, the immobilized cells prepared from a polymeric membrane carrier are easy to separate from reaction products, and catalysts can be repeatedly used; 3, subsequent treatment is simple and convenient for continuous large-scale production; 4, as reaction is carried out in two phases of organic solvent/buffer solution, the toxic action of the organic solvent on the cells can be reduced, and the catalytic activity of the organic solvent is improved; 5, the preparation of the optical pure (R)-2-octanol through the immobilized yeast cells is simple in process, mild in condition, short in reaction time, nearly free from byproducts and up to 90.25 percent e.e. in optical purity; and 6, the method greatly reduces environmental pollution.

The invention discloses a method for preparing high optical pure (R)-2-octanol by a microbiological method, and a microorganism thereof. An immobilized-cell synthesis method of the invention has the advantages that: 1, an immobilization process is simple, and immobilized yeast cells have certain poison resistance, have excellent catalytic effect and can be repeatedly used in a reaction system; 2, the immobilized cells prepared by taking non-polar macroporous absorbent resin as a carrier are good in elasticity, strong in tolerance to temperature and pH, high in mechanical strength, stable in enzyme activity and long in half-life period; 3, as reaction is carried out in two phases of organic solvent/buffer solution, the toxic action of the organic solvent on the cells can be reduced, and the catalytic activity of the organic solvent is improved; and 4, the preparation of the optical pure (R)-2-octanol through the immobilized yeast cells is simple in process, free from need for no expensive coenzyme, mild in condition, short in reaction time, nearly free from byproducts, up to 90.25 percent e.e. in optical purity, simple in subsequent treatment, easy in product separation and friendly to environment.

The invention relates to a waste water treatment process in sebacic acid production. The process comprises the following steps: adopting an extractant to extract phenol in waste water, separating the phenol-containing extracted solution and a raffinate, carrying out dephenolizing and reutilizing on the phenol-containing extracted solution, and discharging the raffinate, wherein DL-2-octanol is adopted as the extractant to extract the phenol-containing waste water in sebacic acid production in the extraction process. The process of the present invention has the following advantages that: 1, the phenol content in the sebacic acid production waste water is significantly reduced, and the waste water after the extraction can meet the discharge standard; 2, with the extractant DL-2-octanol, an internal circulation of the production system is realized; and 3, the DL-2-octanol is the by-product of the sebacic acid production process, such that advantages of easily available DL-2-octanol, low cost and low operation cost are provided for sebacic acid production enterprises.

The invention relates to a process for continuously producing 2-octyl acrylate by reacting acrylic acid and 2-octanol in the presence of a sulfonic acid esterification catalyst and at least one polymerization inhibitor. The water formed by the esterification reaction is entrained by distillation in a column surmounting the reactor in the form of a heteroazeotropic mixture with the 2-octanol which is then subjected, after condensation, to separation in a decanter so as to give an upper organic phase and a lower aqueous phase. The reaction mixture containing the reaction product and residual by-products are purified by separation means in order to obtain: (1) pure 2-octyl acrylate and (2) unreacted 2-octanol and acrylic acid compounds that will be recycled along with the catalyst.

By means of reverse micelle process, nanometer LiBaF3, BaF2, SrF2, CaF2 and BaF2:Ce particles are prepared in a cetyl trimethyl ammonium bromide-2-octanol-water microemulsion system. In the system, the ratio between cetyl trimethyl ammonium bromide and 2-octanol is 1 to 4-6, water content is 9.04-14.2 wt%. The material weight ratio between M(NO3)2 and NH4F is 1 to 1.5-2.5, where M is Ca, Sr and Ba; and that among Ba(NO3), LiNo3 and NH4F is 1 to 1-2 to 1-4. The reaction time at room temperature is 5-15 min. The process of the present invention can prepare nano particle with homogeneously distributed size smaller than 100 nm.

The invention relates to the industrial production of 2-octyl acrylate of very high purity and with a high yield, using a continuous transesterification process. The method of the invention uses ethyl titanate in solution in 2-octanol or 2-octyl titanate as a transesterification catalyst, and employs a purification train comprising two distillation columns.

A method of making 2-octyl acrylate comprising reacting 2-octanol with acrylic acid in the presence of an acid catalyst and added water is described. The 2-octanol may be derived from renewable resources, such as castor oil. The method is efficient and provides selectivity for 2-octyl acrylate.

A cleaning solvent is disclosed for removing residual resin compositions. The cleaning solvent contains at least an alcohol solvent having a boiling point of at least 100° C. The alcohol solvent having a boiling point of at least 100° C. is preferably constituted of at least one solvent selected from n-butyl alcohol, isobutyl alcohol, n-pentanol, 4-methyl-2-pentanol, and 2-octanol. It is more preferable that the alcohol solvent is an isobutyl alcohol.

The invention relates to the production of 2-octylacrylate of high purity and in good yield using ethyl titanate in solution in 2-octanol or 2-octyl titanate as a transesterification catalyst.

The invention is a method for preparing optically pure (S)-2-n-octyl alcohol by microbial method and its special microbe, screening and obtaining bacterial strain Pseudomonas maltophiliaSYB-4, CTCC M204042.It uses the bacterial strain to make cultivation and full-cell preparation, uses racemic2-n-octyl alcohol as substrate to make catalytic conversion reaction on microbe cell, and obtain a product (S)-2-n-octyl alcohol by nonsymmetrical conversion of the racemic2-n-octyl alcohol, where the optical purity of the product reaches above 80%e.e. The invention determines a reacting system and reacting conditions of full-cell nonsymmetrical conversion of racemic2-n-octyl alcohol for the bacterial strain, increasing the optical purity of the product.