74 results about "Ethyl phenylacetate" patented technology

A pattern is formed by applying a resist composition comprising a (meth)acrylate copolymer comprising both recurring units having an acid labile group-substituted carboxyl group and recurring units having a lactone ring, an acid generator, and an organic solvent onto a substrate, prebaking the composition to form a resist film, exposing the resist film to high-energy radiation, baking, and developing the exposed film with a developer. The developer comprises at least 40 wt % of an organic solvent selected from methyl benzoate, ethyl benzoate, phenyl acetate, benzyl acetate, methyl phenylacetate, benzyl formate, phenylethyl formate, methyl 3-phenylpropionate, benzyl propionate, ethyl phenylacetate, and 2-phenylethyl acetate.

The invention discloses a nanometer composite epoxy resin self-repairing microcapsule and a preparation method of the microcapsule. The preparation method comprises the following steps: dispersing silicon dioxide nanometer particles in water, dissolving oil-soluble cross-linking agent into ethyl phenylacetate, mixing oil with water, and shaking by hand to vibrate and emulsify into Pickering latex; dripping the Pickering latex into melamine formaldehyde pre-polymer solution, and finally obtaining a target product by carrying out in-situ cross-linking polymerization of the pre-polymer at the surface of the latex drops under an acidic condition. Due to use of the stable Pickering latex drops as the template of the prepared microcapsule, the prepared microcapsule is regularly spherical, the size distribution is featured with polydispersity; the silicon dioxide particles doped in the capsule wall effectively enhance the mechanical strength and the thermal stability of the microcapsule, and synchronously increase the brittleness of the microcapsule; in this way, better releasing effect is obtained when the capsule of core material ethyl phenylacetate is broken.

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 relates to a preparation method of an M-choline receptor blocking agent of ipratropium bromide 1. The preparation method comprises the following steps of using ethyl phenylacetate as starting raw materials; performing reaction with isopropyl tropanol; generating phenylacetate isopropyl tropeine; then, performing substitution, reduction and addition reaction to obtain the ipratropium bromide. The method has the advantages that the operation is simple; safety and controllability are realized; the work protection is low; the preparation method is suitable for industrial production. The formula is shown as the accompanying drawing, and the molecular weight is 412.36.

The invention provides a honey-sweet type cigarette paper essence and a preparation method thereof. The cigarette paper essence comprises the components according to the total weight of 1000 parts: 1-4 parts of beeswax absolute oil, 2-5 parts of celery seed oil, 5-15 parts of ethyl vanillin, 30-50 parts of phenethyl phenylacetate, 0.5-2 parts of ethyl phenylacetate, 0.1-0.5 parts of ethyl caproate, 1-5 parts of delta-decalactone, 1-5 parts of gamma-nonanoic lactone, 5-15 parts of a cocoa extract, 5-15 parts of a coffee extract, 100-200 parts of propylene glycol, and the balance a 70% ethyl alcohol. The cigarette paper essence has the beneficial effects that: 1, the flavor is rich in hierarchy, can be coordinated with a tobacco original flavor, and can give cigarettes a unique style; 2, a small amount of addition of the essence can bring a prominent and lasting smell to the cigarettes; and 3, the loss of the aroma brought by reducing tar and harmful components is made up, a relatively good modification effect is played on the overall organoleptic characteristics of the cigarettes, and the quality of the cigarettes is facilitated to be improved.

The invention belongs to the technical field of perovskite materials, and particularly relates to a preparation method of a novel two-dimensional perovskite thin film, which comprises: 1) dissolving atwo-dimensional perovskite single crystal in a mixed solvent composed of a polar solvent A and a non-polar solvent B to prepare a two-dimensional perovskite precursor solution; and 2) preparing a two-dimensional perovskite thin film by adopting the two-dimensional perovskite precursor solution, wherein the polar solvent A is formed by mixing any one or more of dimethylformamide, dimethyl sulfoxide, N, N-dimethylacetamide, gamma-butyrolactone and N-methyl pyrrolidone, and the non-polar solvent B is formed by mixing one or more of methylbenzene, chlorobenzene, ethyl acetate and anisole. According to the method, the phase purity and distribution of the two-dimensional perovskite thin film are ensured, the formation of low-layer number phases can be effectively reduced, the defect concentration is reduced, the high-quality two-dimensional perovskite thin film is obtained, and the method is simple in technological process and easy to operate.

The invention provides a method for synthesizing 3-alkoxy-4-alkoxycarbonyl phenylacetate and 3-alkoxy-4-alkoxycarbonyl phenylacetic acid. The method for synthesizing 3-alkoxy-4-alkoxycarbonyl phenylacetate comprises: 3-alkoxy-4-methyl benzoate reacts with the chloro-carbonate on the effect of strong base in the organic solution at 190 deg.-0 deg. to obtain the product; the method of the 3-alkoxy-4-alkoxycarbonyl acetic ether cheesed hydrolysis to obtain the 3-alkoxy-4-alkoxycarbonyl phenylacetic acid.

The invention belongs to the technical field of cigarette filter stick production and particularly relates to a cigarette blast bead raspberry-flavored essence and application of the same to cigarettes. The cigarette blast bead raspberry-flavored essence is composed of raspberry extract, ethyl acetate, ethyl oenanthate, ethyl phenylacetate, methyl anthranilate, Cognac oil and glyceryl caprylate-caprate. The cigarette blast bead raspberry-flavored essence can be applied to preparing a raspberry-flavored cigarette blast bead. The raspberry-flavored cigarette blast bead can be applied to a filter stick to prepare blast bead cigarettes. According to the cigarette blast bead raspberry-flavored essence and the application of the same to the cigarettes and through combination with a relatively complete blast bead production process, cigarette blast bead products stable and uniform in quality can be obtained. When arranged inside a cigarette filter tip, the cigarette blast bead can well weaken irritancy of the cigarettes, improve and enrich the flavor of the cigarettes, and significantly improve the flavor richness, the sensory quality and the smoking enjoyment of the cigarettes. Therefore, the cigarette blast bead raspberry-flavored essence and the application of the same to the cigarettes are high in application value and generalization and application significance to design, development, production and marketing of blast bead cigarettes.

The invention discloses high-temperature resistance rose perfume and a preparation method thereof. The high-temperature resistance rose perfume is prepared from the following components according to apreset ratio: damascenone, damascone alpha, rose oxide, nonanol, geranium oil, vanillin, eugenol, sandal 208, benzyl acetate, ethyl phenylacetate, rosone, cinnamic alcohol, nerol, methyl cedryl ketone, 4-tert-butyl cyclohexyl acetate, geranyl acetate, benzyl benzoate, sandal 803, o-tert-butyl cyclohexyl acetate, geraniol, vanillin alcohol, phenylethyl alcohol, dipropylene glycol, an oak moss extractum, herba pogostemonis oil, tonalid, peach aldehyde, iso-mythyl ionone, bangalol radjanol, lilial, D-limonene, linalool, ambrotone, galaxolide and alpha-hexyl cinnamal. The rose perfume provided bythe invention is high in simulation degree and high temperature resistance ability.

The invention discloses halotolerant saccharomycetes for increasing the content of ethyl ester compounds in soy sauce and application of the halotolerant saccharomycetes. The preservation number of the strain is CGMCC (China General Microbiological Culture Collection Center) No.21635, and the strain is preserved in China General Microbiological Culture Collection Center on January 15, 2021. The strain can be applied to preparation of fermented soy sauce. The strain has good salt tolerance, and if the strain is added in the soy sauce mash process of fermented soy sauce, the content of ester compounds, especially ethyl ester compounds such as ethyl acetate, ethyl 2-methyl propionate, ethyl 3-methylthiopropionate, phenethyl 2-acetate, ethyl lactate, ethyl 2-methyl butyrate and ethyl phenylacetate, in the soy sauce can be remarkably increased; and the strain can be used for the fermentation of the high-salt liquid-state soy sauce so as to improve the flavor and the quality of the soy sauce product.

The invention belongs to the chemical pharmaceutical field and relates to a preparation method of leucongen. The preparation method comprises the following steps: performing a condensation reaction on ethyl phenylacetate and ethyl formate in the presence of a specific solvent and a condensing agent, extracting and purifying a reaction solution, then acidifying, then performing low-temperature devitrification to get a high-purity solid intermediate, namely ethyl a-formylphenylacetate, utilizing the intermediate and L-cysteine hydrochloride to perform a reaction to get the high-purity leucongen. The leucongen does not contain methyl ester impurity and is in line with the requirements of pharmaceutical purity; and furthermore, the operation is simple, and the preparation method is suitable for industrial production.

The invention provides a preparation method of 2-phenyl-1,3-propanediol. Ethyl phenylacetate and methyl formate have a condensation reaction in the presence of a specific solvent and a condensation agent, a mixture of ice and water is added to a reaction solution, a separated water layer is acidized and then extracted, organic layers are merged, the mixture is washed with a saturated saline solution, an organic solvent is recovered, alpha-formyl ethyl phenylacetate is obtained and is reduced through sodium borohydride in the specific solvent, acidification and extraction are performed, a mixed solvent of petroleum ether and ethyl acetate is heated, dissolved and cooled, solids are separated and washed with petroleum ether, and 2-phenyl-1,3-propanediol is obtained. The preparation method is simple and convenient to operate, the product purity and yield are high, and 2-phenyl-1,3-propanediol has very high application value.

The invention discloses an osmanthus flower essence containing natural osmanthus flower fragrance and a preparation method thereof. The osmanthus flower essence mainly comprises natural osmanthus flower fragrance extract, leaf alcohol, isoamyl acetate, cis-3-hexenyl acetate, d-limonene, linalool oxide, linalool, phenethyl alcohol, benzyl acetate, ethyl maltol-1, citronellol, ethyl phenylacetate, geraniol, phenethyl acetate, eugenol, alpha-ionone, dihydro-beta-ionone, gamma-decalactone, beta-ionone, delta-dodecalactone, edible alcohol and like components. The above preparation has the following advantages: the osmanthus flower fragrance extract obtained by low-temperature vacuum distillation serves as a key raw material, and the osmanthus flower essence is prepared by means of an analog-matching formulation. The osmanthus flower essence is featured with verisimilar fragrance, rich body fragrance, strong natural feeling and lasting base fragrance, is applied to food and beverage as food additive, and can bring product natural osmanthus flower fragrance and mouth feel; and meanwhile the fragrance quality and fragrance amount of the osmanthus flower essence are higher than like essence products at home.

The invention discloses a packaging adhesive containing graphite powder and a preparation method thereof. The adhesive comprises the components in parts by weight of 25-30 parts of chloroprene rubber (CR2342), 50-60 parts of cyclohexane, 45-55 parts of methylbenzene, 100-110 parts of ethyl acetate, 100-120 parts of 120# solvent oil, 20-25 parts of phenolic resin 2402, 5-8 parts of maleic resin, 4-6 parts of chitosan, 2-3 parts of Gamma- (methacryloyl oxygen) propyl trimethoxy silane, 0.3-0.4 parts of triethanolamine, 1-2 parts of 4, 4'-diphenyl methane diisocyanate, 3-5 parts of chlorinated paraffinss, 0.2-0.3 parts of Span-60, 5-10 parts of brominated butyl rubber (BBK-232), 4-8 parts of polyacrylate rubber (AR-300), 1-2 parts of activated zinc oxide, 2-3 parts of active magnesium oxide, 0.5-1 parts of sulphur, and 3-4 parts of graphite powder, etc. The adhesive provided by the present invention has the advantages of good high- and low-temperature resistance, abrasion resistance, high adhesive strength, good storage stability, environmental protection property, good effect and convenient usage.

The present invention discloses a packaging adhesive containing activated clay and a method for preparing the same. The adhesive comprises the components in parts by weight of 20-30 parts of chloroprene rubber (CR2322), 50-60 parts of cyclohexane, 40-50 parts of methylbenzene, 100-110 parts of ethyl acetate, 100-120 parts of 120# solvent oil, 20-30 parts of phenolic resin 2402, 5-10 parts of C9 petroleum resin, 6-8 parts of sodium carboxymethyl cellulose, 2-3 parts of aniline methyl triethoxysilane, 0.2-0.3 parts of tri-isopropanolamine, 1-2 parts of PAPI, 3-5 parts of chlorinated paraffinss, 0.2-0.3 parts of Tween-40, 5-10 parts of polyacrylate rubber (ACM-91), 4-8 parts of butadiene styrene rubber (SBR1502), 1-2 parts of activated zinc oxide, 2-3 parts of active magnesium oxide, 0.5-1 parts of sulphur, 3-5 parts of activated clay, etc. The adhesive provided by the present invention has the advantages of good high- and low-temperature resistance, abrasion resistance, high adhesive strength, good storage stability, environmental protection, favorable effect and convenient use.

The invention relates to the field of essences, and provides a honey essence for daily chemicals in order to solve the problem that the difference between the aroma of existing honey essence and nature aroma is great. The honey essence for the daily chemicals is prepared from, by mass, 0.1-1 part of phenethyl acetate, 0.1-1 part of isoamyl acetate, 0.01-0.15 part of geranyl acetate, 0.1-1 part ofethyl acetate, 0.1-1 part of ethyl pelargonate, 1-15 parts of phenylethyl isobutyrate, 0.1-1.5 parts of isoamyl isovalerate, 0.5-3 parts of ethyl lactate, 0.1-1 part of ethyl phenylacetate, 0.5-1.5 parts of butyl phenylacetate, 0.1-1 part of methyl phenylacetate, 1-10 parts of phenylethyl phenylacetate, 5-20 parts of phenethyl alcohol, 0.1-1 part of citronellol, 0.01-0.2 part of geraniol, 0.5-3 parts of artificial cognac oil, 1-10 parts of methyl cedryl ether, 0.5-3 parts of ethyl maltol, 0.1-1 part of damascenone, 0.1-1.5 parts of delta damascone, 0.1-1.5 parts of 4-hydroxy-2,5-dimethyl-3(2H)-furanone and 50-70 parts of dipropylene glycol. By controlling the usage ratio of all the components, the aroma intensity of the honey essence for the daily chemicals is easily improved, and the aroma given off by the honey essence for the daily chemicals is closer to the natural aroma.

The invention discloses a package-use adhesive comprising nano-grade sepiolite, and a preparation method thereof. The adhesive is composed of the raw materials of, by weight, 20-30 parts of neoprene rubber (CR2441), 45-55 parts of cyclohexane, 50-60 parts of toluene, 100-120 parts of ethyl acetate, 105-115 parts of 120# solvent oil, 15-25 parts of 2402 phenolic resin, 5-8 parts of hydrogenated rosin pentaerythritol ester, 4-6 parts of casein, 2-3 parts of 3-aminopropyl triethoxysilane, 0.2-0.3 parts of isopropanolamine, 1-2 parts of hexamethylene diisocyanate, 3-5 parts of chlorinated paraffin, 0.2-0.4 parts of Tween-60, 5-10 parts of nitrile rubber (N240S), 5-10 parts of epichlorohydrin rubber (T-55), 1-2 parts of active zinc oxide, 2-3 parts of active magnesium oxide, 0.5-1 parts of sulfur, 3-5 parts of nano-grade sepiolite, 2-3 parts of aluminum hydroxide, and the like. The adhesive provided by the invention has excellent high-temperature resistance, low-temperature resistance, wear resistance, high bonding strength, waterproof property, moisture-proof property, good storage stability, good environment-friendliness, and good and convenient application effect.

The invention discloses a preparation method of a paper-based functional material for oil-water separation, and belongs to the technical field of water treatment. The preparation method specifically comprises the following steps: by taking lignocellulose as a raw material, citric acid as a cross-linking and functionalizing reagent and sodium hypophosphite as a catalyst, preparing the paper-based functional material with good wet strength and oil-water separation performance by adopting papermaking, dipping, drying and curing processes. According to the invention, the wet tensile strength of the paper-based functional material can reach 18 Nm / g at most, the contact angle of oil drops such as trichloromethane, castor oil and the like under water can reach more than 150 DEG, the paper-based functional material has underwater super-oleophobic performance, and can efficiently filter mixtures of organic solvents such as trichloromethane, castor oil, methylbenzene, ethyl acetate and the likeand water, and the oil-water separation efficiency can reach more than 99%; and the paper-based functional material for oil-water separation is simple in material, easy to manufacture, environment-friendly, high in oil-water separation efficiency and good in industrial application prospect.

The invention discloses an inula flower extract fragrance for cigarettes and a preparing method of the inula flower extract fragrance. The fragrance for cigarettes is prepared from, by weight, 16-20 parts of inula flower extract, 13-15 parts of laurel oil, 10-12 parts of ethyl maltol, 10-12 parts of solanesol, 8-10 parts of ethyl phenylacetate, 8-10 parts of heliotropin, 8-10 parts of linalool, 6-8 parts of nutmeg oil, 6-8 parts of dendranthema indicum var aromaticum essential oil, 3-5 parts of lavender oil and 3-5 parts of honey. The fragrance for cigarettes can effectively improve the aroma of cigarettes, soften smoke, reduce irritation and improve the taste; meanwhile, as inula flowers have the effects of moistening the lung to arrest coughs, and inula flower effective ingredients can be inhaled into the body in the smoking process and perform the effects of moistening the lung, reducing phlegm and arresting coughs, the irritation of smoke to the mucosa of the respiratory tract can be relieved, and the harm of cigarettes can be reduced.

The invention provides a chemical method for clearing sealant and solution prepared by using the chemical method and relates to the field of chemical clearing, in particular to the sealant clearing field. Liquid paraffin, methylbenzene, ethyl acetate, acetone, phenol, ethylalcohol and ammonia water are prepared into organic solution according to proportioning; the sealant which needs clearing is soaked in the solution or degreasing cotton soakage solution is applied on the surface of the sealant, the soak time is thirty minutes. After the sealant is softened, the degreasing cotton soakage solution can be eliminated. After the degreasing cotton soakage solution can be eliminated, deionized water is used for washing and compressed air is used for drying the parts. The chemical method can simply, rapidly, efficiently wipe the sealant on the surface of the parts; the prepared organic solution has no corrosion on the high-temperature alloy 4648, DZ4 and other high-temperature alloy materials referred to the parts.

The present invention discloses a sweet and fragrant compound feed flavoring agent and belongs to the technical field of animal feeds. The sweet and fragrant compound feed flavoring agent is prepared from the following raw materials in parts by mass: 1.0-50.0 parts of anhydrous sodium saccharin, 0.1-10.0 parts of neotame, 1.0-10.0 parts of a sweetness enhancement, 2.0-10.0 parts of citric acids, 5.0-10.0 parts of disodium nucleotide, 1.0-15.0 parts of a fragrance agent, 10.0-60.0 parts of silicon dioxide and 1.0-5.0 parts of maltodextrin. The fragrance agent is prepared from the following raw materials in parts by mass: 0.01-0.5 part of phenylacetic acid, 0.01-0.5 part of ethyl phenylacetate, 1.0-10.0 parts of ethyl vanillin, 1.0-5.0 parts of ethyl maltol, 0.1-0.5 part of furanone, 0.1-1 part of ethyl butyrate, 5.0-70.0 parts of propylene glycol and 10.0-20.0 parts of ethanol. At the same time, the present invention also discloses a preparation method of the feed flavoring agent. The flavoring agent prepared from the raw materials has a combination of fragrance and sweetness, and a comprehensive taste, can effectively correct a bad smell of the feeds, and can promote animal food intake.

The invention provides a chemical method for clearing sealant and a solution prepared by using the chemical method, and relates to the field of chemical cleaning, in particular to the sealant cleaning field. Liquid paraffin, methylbenzene, ethyl acetate, acetone, phenol, ethylalcohol and ammonia water are prepared into an organic solution according to proportioning; the sealant which needs clearing is soaked in the solution or a degreasing cotton soakage solution is applied on the surface of the sealant, and the soak time is thirty minutes. After the sealant is softened, the sealant can be eliminated. After the sealant can be eliminated, deionized water is used for washing and compressed air is used for drying parts. The chemical method can easily, rapidly, efficiently wipe the sealant on the surface of the parts, and the prepared organic solution has no corrosion on the high-temperature alloy materials such as high-temperature alloy 4648 and high-temperature alloy DZ4 referred to the parts.

The invention discloses a Kyoho grape essence, which is prepared from ethyl acetate, ethyl propionate, propyl acetate, ethyl butyrate, ethyl crotonate, cinnamyl propionate, cinnamyl alcohol, phenethylisobutyrate, ethyl phenylacetate, beta-damascenone, cis-3-hexenyl isovalerate, storax alcohol, beta-citronellol acetate, beta-citronellol, styrallyl acetate, beta-geranyl acetate, beta-linalyl acetate and methyl anthranilate, N-acetyl anthranilate, ethyl caproate, ethyl caprylate, ethyl caprate, acetic acid, propionic acid, hexanoic acid, butyric acid, linalool, leaf alcohol acetate, leaf alcohol, hexanoic acid leaf alcohol ester, isobutyrate leaf alcohol ester, trans-2-hexenal, butanol, ethyl maltol, furanone, 3-hydroxy-2-butanone, ethanol and propylene glycol. The Kyoho grape essence disclosed by the invention is mellow and full in grape characteristic aroma and strong in natural feeling, and can enable a product to have natural Kyoho grape aroma and taste after being added into foods such as beverages, jam and pastries as a food additive.

A coating composition of which the total weight is 100wt% comprises the following components: 10 to 40wt% of at least one of methoxy cinnamic acid and methoxy cinnamic acid ester, 10 to 40 wt% of silicone resin, and 30 to 50 wt% of organic solvent, wherein the organic solvent comprises at least one of alcohol, isopropanol, methylbenzene, ethyl acetate and silicone oil with the viscosity smaller than or equal to 200 mPa.s. The coating composition provided by the invention has good application property, and a coating prepared from the coating composition has good glossiness, hydrophobicity and hydrophobic persistence.

The invention discloses a synthetic process of fexofenadine hydrochloride. The synthetic process of fexofenadine hydrochloride comprises the following steps of: with alpha, alpha-dimethyl phenylacetic acid as a raw material, carrying out an esterification reaction on alpha, alpha-dimethyl phenylacetic acid and absolute ethyl alcohol under the catalysis of a silica gel loaded phosphotungstic acid (PW12 / SiO2) solid acid catalyst to obtain alpha, alpha-dimethyl ethyl phenylacetate; carrying out Friedel-Grafts reaction on alpha, alpha-dimethyl ethyl phenylacetate and 4-chlorobutyryl chloride to obtain alpha, alpha-dimethyl-4-(4-chloro-1-oxo butyl) ethyl phenylacetate; reducing by virtue of sodium borohydride in 95% ethyl alcohol to obtain alpha, alpha-dimethyl-4-(4-chloro-1-hydroxyl butyl) ethyl phenylacetate; and carrying out N-alkylation reaction on alpha, alpha-dimethyl-4-(4-chloro-1-hydroxyl butyl) ethyl phenylacetate and alpha, alpha-dimethyl-4-piperidine methyl alcohol in DMF (dimethyl formamide) for 24 hours at the temperature of 80 DEG C to obtain alpha, alpha-dimethyl-4-[1-hydroxyl-4-[4-(hydroxyl diphenylmethyl)-1-piperidyl]-butyl] ethyl phenylacetate, and then carrying out alkali hydrolysis and salification by virtue of hydrochloric acid, so that fexofenadine hydrochloride is obtained. The synthetic process of fexofenadine hydrochloride is high in yield and low in cost, produces less pollution and is applicable to industrial mass production.

The invention provides a sweet citrus type flavoring agent for a shed cattle feed and a preparation method of the sweet citrus type flavoring agent, and belongs to the technical field of feed additives. The flavoring agent comprises 10-18 parts of linalool, 5-10 parts of linalyl acetate, 60-100 parts of citral, 1-3 parts of octanal, 5-10 parts of phenylacetic acid, 10-20 parts of phenethyl alcohol, 1-5 parts of ethyl phenylacetate, 1-3 parts of phenyl ethyl cinnamate, 2-5 parts of geraniol, 8-12 parts of limonene, 1-5 parts of sweet orange oil, 60-120 parts of solvents and 200-1000 parts of carriers. A conventional feed flavoring agent still has the problem that the preference flavor of animals cannot be met, peculiar smell in the feed can only be concealed to a certain extent, the stability is low, after the flavoring agent is added to the feed, the quality of the feed is instable, and the palatability is poor. The cattle has keen sense of smell and has obvious perception on differences of the fragrance of the feed, so that the phenomena that the cattle refuses to eat the feed or the food consumption is reduced, can be caused. The sweet citrus type flavoring agent for the shed cattle feed provided by the invention is high in stability and good in palatability, the preference of shed cattle is met, and the effects of guaranteeing stable quality of the feed and inducing the cattle to eat the feed continuously can be achieved.

The invention discloses a production method of high-efficiency herbicide flurtamone. The production method comprises that a desired product flurtamone is prepared from trifluoromethyl phenylacetonitrile and ethyl phenylacetate as main raw materials through Claisen condensation, cyclization in an acid solvent and methylation. The production method has high safety, low requirements on reaction purifying conditions and product separation easiness, does not easily discharge an acid solution, realizes recovery and recycle of a solvent and has a high production yield. The production method is suitable for flurtamone industrial production and is conducive to wide application of high-efficiency herbicide flurtamone.

The invention discloses a method for highly efficiently synthesizing 2-phenyl-1,3-propylene glycol. The method includes the following steps that firstly a silicate active agent is prepared; secondly,ethyl benzoacetate, methyl formate and diisopropyl carbodiimide are used as raw materials for condensation reaction; alpha-formyl ethyl phenylacetate is prepared; then sodium borohydride is used as ahydrogenation reductant, the prepared silicate active agent promotes a reduction reaction, and alpha-formyl ethyl phenylacetate is reduced to prepare 2-phenyl-1,3-propylene glycol. The 2-phenyl-1,3-propylene glycol prepared by the method is high in purity, high in yield, short in reaction time and low in cost.

The invention relates to a preparation method of crosslinking montmorillonite of yttrium doped with zirconium in rare soil; the preparation method comprises the following steps: yttrium nitrate, zirconyl chloride and calcium-typed montmorillonite of Inner Mongolia are adopted as materials, three-step methods of sodium ion exchange of the montmorillonite, the preparation of a compound crosslinking agent of yttrium doped with zirconium in rare soil and column supporting of the compound crosslinking agent are carried out to obtain the crosslinking montmorillonite of yttrium doped with zirconium in rare soil; after the crosslinking montmorillonite is used for catalyzing and oxidizing a catalyst carrier of VOCs and loading 0.1wt% of palladium oxide which is the active component with low content to prepare a catalyst, the temperature of complete oxidation for catalyzing and oxidizing acetone, toluene and ethyl acetate is respectively 310 DEG C, 250 DEG C and 270 DEG C.