232 results about "Ethyl propionate" patented technology

An environmentally clean dual fuel for an internal combustion engine, comprising acetylene as a primary fuel and a combustible fuel, such as one or more fluids selected from an alcohol such as ethanol, methanol or any other alcohol or alcohols from the group comprising C1-C20 carbon chains, ethers such as from the group comprising dimethyl ether, diethyl ether, methyl t-butyl ether, ethyl t-butyl ether, t-amyl methyl ether, di-isopropyl ether and the like, low-molecular-weight esters such as from the group comprising methyl formate, methyl acetate, ethyl acetate, methyl propionate, ethyl propionate and the like, or other suitable combustible fluid such as mineral spirits and the like, as a secondary fuel for operatively preventing early ignition and knock arising from the primary fuel. The dual fuel, internal combustion system, which generally utilizes a two-stage process for start-up and operation and can be operated with air- or liquid-cooling, is environmentally clean with hydrocarbon, CO, NOx, and SOx emissions substantially eliminated.

There is provided in one embodiment of the invention an electrolyte for use in a lithium ion electrochemical cell. The electrolyte comprises a mixture of an ethylene carbonate (EC), an ethyl methyl carbonate (EMC), an ester cosolvent, and a lithium salt. The ester cosolvent comprises methyl propionate (MP), ethyl propionate (EP), methyl butyrate (MB), ethyl butyrate (EB), propyl butyrate (PB), or butyl butyrate (BB). The electrochemical cell operates in a temperature range of from about −60 degrees Celsius to about 60 degrees Celsius. In another embodiment there is provided a lithium ion electrochemical cell using the electrolyte of the invention.

A lithium secondary battery has a cathode made of carbon material capable of occluding or emitting a lithium ion, a cathode made of lithium-contained oxide, and a non-aqueous electrolyte. The non-aqueous electrolyte includes a lithium salt containing LiPF₆ and LiBF₄; and a non-linear carbonate-based mixed organic solvent in which (a) a cyclic carbonate having ethylene carbonate or a mixture of ethylene carbonate and propylene carbonate and (b) a propionate-based ester such as ethyl propionate are mixed at a volume ratio (a:b) in the range from about 10:90 to about 70:30. This lithium secondary battery ensures excellent high-rate charging/discharging characteristics and improved life cycle and low-temperature discharging characteristics since it includes a predetermined mixed organic solvent not including a linear carbonate. Also, since gas generation is restrained at a high temperature, a battery set may be mounted in a more improved way.

The invention belongs to the field of lithium batteries, in particular to a low-temperature lithium ion battery. The positive electrode sheet comprises a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer comprises 4.4 V lithium cobaltate material, a positive electrode conductive agent and a positive electrode binder. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer comprises a hard carbon coatedsecondary particle artificial graphite material, a negative electrode conductive agent, a dispersant and a negative electrode binder. The electrolyte comprises 10-20% of lithium hexafluorophosphate,10-20% of ethyl propionate, 10-20% of diethyl carbonate, 15-30% of vinyl carbonate, 15-30% of propyl propionate, 3-10% of fluorovinyl carbonate, 2-3% of propylene sulfite, 0.5-2.5% of ethylene glycolmonobutyl ether and 0.5-2.5% of 2, 2'-dithiopyridine. Compared with the batteries in the prior art, the lithium ion battery has good charging and discharging performance and higher energy density under low temperature condition.

The invention discloses an application of a rhodamine B based fluorescence sensor which can specifically detect tin ions. According to the application, benzyl 3-(3', 6'-bis(diethyl amino)-3-oxo-spiro [isoindoline-1, 9'-xanthene]-2-yl) ethyl propionate is taken as a substrate, different heavy metal ions such as MgCl2*6H2O, SnCl2*H2O, CrCl3*6H2O, AgNO3, CaCl2, NaCl, PbCl2, KCl, MnCl2*4H2O, ZnCl2, CuCl2*2H2O, LiCl*H2O, Ba(NO3)2, HgCl2, CoCl2, FeCl2*4H2O, FeCl3*6H2O, CdCl2*2.5H2O, AlCl3 and the like are added, and fluorescent response is found only when SnCl2*H2O is added, so that the fluorescence sensor which can specifically detect tin ions is developed. The sensor has the advantages of high specificity and sensitivity and the like and has important application potentials in the aspects of disease diagnosis and health evaluation.

The invention discloses a lactic acid-tolerant ester-producing pichia pastoris, and belongs to the technical field of a bioengineering technology and a brewing biotechnology. The strain is preserved at the General Microbiology Center of the China Committee for Culture Collection of Microorganisms on April 24, 2017, the classification is named pichia kudriavzevii (Pichia kudriavzevii) and the preservation number is CGMCC No.14068. The pichia pastoris is high in environmental tolerance, is capable of tolerating 0-15% lactic acid, is capable of metabolizing to generate multiple ethyl ester volatile flavor substances, such as ethyl acetate, ethyl propionate, ethyl caprylate, phenethyl acetate and ethyl phenylacetate in the environment of 0-12% lactic acid, and is a brewing functional strain with excellent performance.

The invention provides application of modified calcium carbonate in plastics. The plastics are prepared from the following raw materials in parts by weight: 3 to 5 parts of modified calcium carbonate, 1 to 3 parts of ethyl propionate, 4 to 6 parts of glass fibers, 40 to 50 parts of polycarbonate, 0.5 to 1 part of alunite, and 0.5 to 1 part of cross-linking agent. The modified calcium carbonate provided by the invention is added in the production process of the plastics, and the prepared plastics have good tensile strength, elongation at break, bending strength and brinell hardness, and high thermal deformation temperature.

The invention discloses a method for promoting aging of fruit-type white spirit under actions of infrared assisted ultrasonic and a pulse electric field, which comprises the following steps: fermenting full fruit juice, distilling to obtain fruit-type white spirit, treating under the actions of infrared rays and ultrasonic for 5-15 minutes while controlling the temperature at 40-60 DEG C, ultrafiltering with an ultrafiltration membrane with the pore size of 0.02-0.05 mu m to obtain an ultrafiltrate, treating the ultrafiltrate under the action of a pulse electric field with the electric field intensity of 30-50 kV/cm, quickly cooling the liquor subjected to electric field treatment to 0-5 DEG C, keeping for 12-20 hours, and heating to normal temperature to obtain the fruit-type white spirit with soft mouthfeel. The fruit-type white spirit treated by the method has typical fruit odor and soft and thick mouthfeel; and the content of ethyl acetate, ethyl propionate, ethyl lactate, ethyl laurate, phenethyl alcohol and other aroma substances is enhanced by 50-70% as compared with the untreated white spirit, the heady fusel oil component is reduced by 40-60%, and all the components are close to the indexes of the 5-year-aged white spirit. The method has the advantages of time saving, labor saving and low cost.

The invention discloses a novel esterase as well as a coding gene and an application of esterase. The esterase EST04211 has an amino acid sequence shown in SEQ ID NO. 2. The amino acid sequence of the gene of the esterase EST04211 is shown in SEQ ID NO. 1. The novel esterase disclosed by the invention is obtained by cloning Bacillus SCSIO15121 derived from deep sea of the Indian Ocean. The esterase has the largest characteristic that the esterification rate is 97% in catalytic synthesis of ethyl isobutyrate, and under similar conditions, the esterase can also catalyze propionic acid, butyric acid, valeric acid, caproic acid and ethanol, propanol, butanol, pentanol and hexanol to synthesize corresponding short-chain aromatic ester flavors, such as ethyl propionate, propyl propionate and butyl propionate, the esterification rate mostly reaches 85%-95%. The esterase can be applied in the industrial bio-manufacturing of the short-chain aromatic flavors, such as ethyl isobutyrate and the ester flavors are high in quality, belongs to natural products and can be applied in production industries, such as foods, cigarettes and daily chemical products.

The invention discloses a lithium ion battery with adoption of secondary electrolyte injection, comprising a positive pole, a negative pole, a diaphragm, an electrolyte and an outer package. In the process of manufacturing the battery, the secondary electrolyte injection is adopted; the electrolyte solvent in the first electrolyte injection is one or a combination of more than one of EC (ethylene carbonate), PC (propylene carbonate), DMC (dimethyl carbonate), DEC (diethyl carbonate), EMC (ethyl methyl carbonate), Gamma-BL (butyrolactone), MF (methyl formate), MA (methyl acetate), EP (ethyl propionate) and THF (tetrahydrofuran) and does not contain acetonitrile and propionitrile; the secondary electrolyte injection is conducted after the formation; and the used electrolyte in the secondary electrolyte injection contains at least one of the acetonitrile and the propionitrile. The electrolyte containing the at least one of the acetonitrile and the propionitrile has the advantage of high normal-temperature conductivity (10-50mS/cm) and low-temperature conductivity (4-20mS/cm at the temperature of -20 DEG C), thereby exceeding the level of an existing electrolyte.

Disclosed are an electrolyte for lithium secondary batteries including 10 to 50% by weight of a cyclic carbonate compound, and 50 to 90% by weight of a linear ester compound, based on the total weight of a non-aqueous solvent, wherein a content of ethyl propionate of the linear ester compound is 20 to 60% by weight, based on the total weight of the non-aqueous solvent, and a lithium secondary battery including the electrolyte and exhibiting superior low-temperature characteristics.

The invention relates to a preparation method for synthesizing propionic acid by carbonylation. In the method, ethanol or ethanol derivatives serving as raw materials and a liquid reaction composition are carbonylated to synthesize the propionic acid, wherein the reaction temperature is between 140 and 220 DEG C; the reaction pressure is between 2.0 and 8.0 MPa; the liquid reaction composition comprises rhodium or iridium serving as a main catalyst, iodoethane serving as a cocatalyst, ethyl propionate, the propionic acid, water, and a first iodide and a second iodide serving as accelerants. Due to the addition of the two iodides, the stability of a catalyst and the catalytic activity for synthesizing the propionic acid by the carbonylation of the ethanol can be further improved.

The invention provides a fast-charging lithium-ion battery. An anode active material is graphite coated with soft carbon. The solute of an electrolyte is lithium hexafluorophosphate. An organic solvent contains ethylene carbonate, propylene carbonate, ethyl propionate, and polypropylene. The lithium-ion battery provided by the invention supports 2C rate cycle, has the advantages of long cycle lifeand stable performance, and can be cycled and used 900 times at the 2C/1C charge and discharge rate, and the battery capacity can still be maintained above 87%.

The invention discloses a lithium ion battery and an electrolyte solution thereof. The electrolyte solution comprises an electrolyte solution solvent, an electrolyte and an additive, wherein the electrolyte solution solvent comprises EC (ethylene carbonate), DEC (Diethyl Carbonate), DMC (Dimethyl Carbonate), EMC (ethyl methyl carbonate) and EP (ethyl propionate); the electrolyte is LiPF6; the additive comprises a LiBF4, PS (propane sultone) and FB (fluorobenzene) which are added for improving the high-temperature performance, and FEC (fluoroethylene carbonate) which is added for improving the low-temperature performance and the long-cycling performance. The lithium ion battery comprising the electrolyte solution can meet requirements that the electric discharge capacity of the lithium ion battery under 0.2C (Capacity) at a lower temperature of -40 DEG C is greater than the electric discharge capacity at a normal temperature by more than 75%; the electric discharge capacity of the lithium ion battery under 0.1C is greater than the electric discharge capacity at the normal temperature by more than 85%. Meanwhile, the capacity retention ratio of the lithium ion battery can be retained by more than 80% after the lithium ion battery is cycled for 500 circles. After the lithium ion battery with full charge is stored for 7 days at 60 DEG C, the thickness swelling rate of the lithium ion battery is less than or equal to 5.0%; the capacity recovery rate of the lithium ion battery is greater than 90%. After the lithium ion battery is stored for 90 days, the capacity recovery rate of the lithium ion battery is greater than 95%.

The present invention relates to a lithium ion battery low temperature electrolyte and a lithium ion battery, and belongs to the technical field of lithium ion batteries. The lithium ion battery low temperature electrolyte comprises, by weight, 5-20% of lithium hexafluorophosphate, 0.1-3% of lithium fluoride, 0.2-5% of lithium tetrafluoroborate, 48-94.7% of an electrolyte solvent, 2-5% of vinylene carbonate, 2-10% of ethyl propionate, and 1-5% of ethyl acetate. With the lithium ion battery low temperature electrolyte of the present invention, the charge-discharge performance and the cycle performance of the electrolyte at the low temperature can be improved.

The invention relates to the field of cigarette flavoring, in particular to a mango flavor tobacco essence, which consists of the following raw materials by weight: 30-40 parts of mango extract, 10-20 parts of citrus oil, 5-10 parts of dihydrocoumarin, 20-30 parts of aromatic tobacco extract, 15-20 parts of ethyl propionate and 20-25 parts of propylene glycol. The mango flavor tobacco essence provided by the invention has the advantages of simple and easily available raw materials, simple preparation and low cost. And the rolled cigarettes are rich in aroma and unique in style during smoking, and have the unique flavor of mangoes and oranges.

The invention relates to a preparation containing: (i) a composition containing (a) one, two or a plurality of compounds selected from the group consisting of (a1) alcohol monoterpenes of formula (I) in which R1 is H or methyl, R2 is H or C₂-alkenyl, and R3 is a linear or branched, saturated or unsaturated hydrocarbon radical with 4 to 10 carbon atoms, and the enantiomers, diastereomers, racemates, solvates and physiologically compatible salts thereof, and/or (a2) bicyclic epoxy-monoterpenes, (b) at least two lactones of formula (II) in which R4 is H or methyl, R5 is a linear or branched, saturated or unsaturated hydrocarbon radical with 2 to 10 hydrocarbon atoms and n is the number 1 or 2, and the enantiomers, diastereomers and racemates thereof, (c) one, two or a plurality of solvents selected from the group consisting of ethanol, water, dipropylene glycol (DPG), diethyl phtalate (DEP), propylene glycol (PG), isopropyl myristate (IPM), isopropyl palmitate (IPP), triethyl citrate (TEC), triacetin (TRI), 1,2-Propanediol, 1,3-Propanediol, Propanethiol, Pentanediol, Hexanediol, Octanediol, Decanediol (SymClariol®), Dodecanol, 4-hydroxy-acetophenone (SymSave® H), glycerine, butylene glycol, pentylene glycol, hexylene glycol, decylene glycol, propylene carbonate, butylene carbonate, glycerine carbonate, 2-5 benzyl heptanol, lauryl alcohol, trimethyl-hydroxypentyl-isobutyrate, glyceryl-caprylate, ethylhexyl glycerine, benzyl benzoate (BB), and optionally (d) other flavouring agents or aromatic substances selected from the group consisting of 3-phenylbutanal (Trifernal), acetyl methyl carbinol, anethole, anisyl acetate, dihydroeugenol, linalyl formate, 2-methyldecanal, 2-benzyl-2-methylbut-3-ene nitrile (Ci-trowanil® B), 3-hexenyl acetate, styrallyl acetate, belanis, citronellal, cinnamyl acetate, rhubafuran, beta-ions, anther, prenyl acetate, 2-phenyl propanal, 4-(4-hydroxyphenyl)butan-2-one (Frambinon®), ethyl phenoxyacetate, isoralderine, gamma-terpinene, limonene, neocyclocitral, methyl lavender ketone, styrallyl propionate, phenyl ethyl propionate, limonenal, 4-isopentylcyclohexanol (Symrose®), 4-methyl-2-phenyl-3,6-dihydro-2H-pyran/4-methylene-2-phenyl-tetrahydropyrane (Rosyrane super), hydrocitronitril, phenoxanol, isoamyl phenylacetate, damascone, silvial, nectaryl, ambroxide, acetyl pyrazine, trimethyl pyrazine, isoamyl acetate, para-cresyl methyl ether, filbertone, cyclohexyl acetate, heliotropin, acetophenone, anisaldehyde, para-methyl acetophenone, veratraldehyde, methyl anisate and vertoprenal; (ii) aldehydes of formula (III) in which R6 is a saturated or non-saturated, linear hydrocarbon radical; and/or (iii) free fatty acids of formula (IV), in which R7 is a linear or branched, saturated hydrocarbon radical.

The invention relates to an anti-aging geogrid prepared by processing the following raw materials in parts by weight: 70-80 parts of HDPE, 20-30 parts of LLDPE, 8-12 parts of EVA, 1-2 parts of 2,2'-thiobis[3-(3,5-ditert-butyl-4-hydroxyphenyl)ethyl propionate], 1-2 parts of antioxidant BHT, 0.1-0.3 part of light stabilizer 744, 4-6 parts of calcium carbonate and 3-5 parts of modified carbon black master batches. The preparation method of the anti-aging geogrid comprises the steps of mixing all the materials in the formula, and extruding to obtain a melt; forming a plate from the melt by using a three-roll calendar; punching the plate by using a punching machine; and stretching after heating the pore plate to obtain the geogrid. The modified geogrid prepared by processing the raw materials is good in anti-aging performance, high in various mechanical properties and low in production and processing costs.

The invention discloses a novel microbial strain Saccharomyces cerevisiae CGMCC No.2230 and application of the Saccharomyces cerevisiae CGMCC No.2230 in biotransformation preparation of beta-hydroxybenzoic ethyl propionate, wherein, the Saccharomyces cerevisiae CGMCC No.2230 is collected in China General Microbiological Culture Collection Center of China Committee for Culture Collection of Microorganisms with a collection number of CGMCC No.2230. The application of the invention is that: beta-carbonyl benzoic ethyl propionates are taken as substrates, and immobilized cell particles which are prepared by fermentation broth obtained after fermentation of the Saccharomyces cerevisiae strain CGMCC No.2230 are taken as biocatalysts; transformation reaction time of transformation liquid is 8 to 72 hours at the temperature of 25 to 30 DEG C in a water/dibutyl phthalate two-phase system, and the product beta-hydroxybenzoic ethyl propionates are obtained after separation and purification of the transformation liquid. The microbial transformation method has the advantages of friendly surroundings, mild reaction conditions, simple product separation, high substrate transformation ratio, good product purity and biocatalysts capable of being reused, and is suitable for commercial process.

The invention relates to natural lipstick, which comprises the following components in part by mass: 38 to 47.5 parts of water-phase Chinese redbud extracting solution, 0 to 0.03 part of edible carmine, 41 to 49.5 parts of oil-phase castor oil, 10 to 12 parts of bee wax, 0.46 to 0.48 part of preservative ethyoxyl ethyl propionate (EEP), wherein according to the Chinese redbud extracting solution,Chinese redbud and honey are used as raw materials, the density of the honey is between 39 and 41 baume degree, and the using amount of the honey is 1.8 to 2.5 times that of the Chinese redbud. A preparation method for the natural lipstick comprises the following steps of: cleaning the selected Chinese redbud by using purified water, disinfecting at the temperature of 100 DEG C for 3 to 5 minutes, cooling to the temperature of 65 DEG C, putting the disinfected Chinese redbud into a disinfected glass container, heating to the temperature of less than or equal to 65 DEG C in a water-resisting mode, standing for 36 hours to obtain filtrate serving as the Chinese redbud extracting solution; and heating the castor oil and the bee wax to the temperature of between 60 and 85 DEG C, heating the Chinese redbud extracting solution, the edible carmine to the temperature which is the same as that of an oil phase, adding the oil phase into a water phase with stirring, continuing to stirring until the mixture is emulsified, separating the materials from a heat source, cooling naturally to the temperature of below 50 DEG C, adding the EEP, cooling naturally to room temperature, and filling into a hose.

The invention provides a formula of Baijiu composite blending and flavoring liquid and relates to the technical field of production of Baijiu. The formula comprises the following components in parts by weight: 26 to 30 parts of ethyl hexanoate, 14 to 18 parts of ethyl lactate, 0.6 to 1 part of ethyl formate, 12 to 16 parts of ethyl acetate, 0.1 to 0.3 part of ethyl propionate, 2.5 to 2.9 parts ofethyl butyrate, 0.6 to 0.8 part of ethyl valerate, 3 to 4 parts of hexanoic acid, 5 to 6 parts of lactic acid, 0.2 to 0.4 part of formic acid, 10 to 11 parts of acetic acid, 0.05 to 0.15 part of propionic acid, 1 to 3 parts of butyric acid, 0.1 to 0.3 part of pentanoic acid, 0.5 to 1.5 parts of normal propyl alcohol, 0.2 to 0.4 part of normal butanol, 0.5 to 0.7 part of isobutanol, 0.15 to 0.2 part of sec-butyl alcohol, 2.5 to 3.5 parts of isoamylol, 0.1 to 0.15 part of hexyl alcohol, 4 to 6 parts of acetaldehyde, 4 to 6 parts of acetal, 0.1 to 0.3 part of 2,3-butanedione and 0.05 to 0.15 partof 3-hydroxy-2-butanone. The Baijiu with various flavors such as strong flavor, faint scent, soy sauce flavor and all flavors can be prepared by the flavoring liquid and is suitable for different groups of users.