89 results about "Octyl Alcohols" patented technology

The invention relates to a preparation method of a sun-screening agent OMC (iso-octyl P-Methoxycinnamate). The preparation method comprises the following steps of: 1, adding p-anisaldehyde, malonic acid, a catalyst I organic secondary amine substance, a catalyst II organic acid substance and a water-insoluble organic aromatic hydrocarbon solvent to a condensation reaction kettle, and carrying out reflux water diversion reaction for 4-5 hours; 2, after condensation reaction is finished, cooling to 5-15 DEG C, filtering to obtain a p-methoxycinnamic acid crude product, directly applying filter liquor to next reaction, and optionally supplementing a small quantity of catalysts and solvents to the filter liquor; 3, adding catalyst III macroporous type storng acid cation exchange resin, isooctyl alcohol, the p-methoxycinnamic acid crude product and an aromatic hydrocarbon or aliphatic hydrocarbon solvent to an esterifying reaction kettle, and carrying out reflux water diversion reaction for 2-3 hours; and 4, after esterifying reaction is finished, cooling to 65 DEG C, filtering and recovering the catalysts for mechanical application, washing the filter liquor to neutrality through a 5% sodium carbonate water solution, desolventizing, and rectifying to obtain the final product isooctyl p-methoxycinnamate. The method disclosed by the invention has the characteristics of easiness, convenience, easiness in control, industrial production, low environment pollution, low energy consumption, material recycling, high product purity, and the like.

The invention discloses a preparation method of ultrahigh-purity niobium oxide. The preparation method comprises the steps of acidity regulation, extraction separation, neutralization, precipitation, drying and calcining by taking a fluoroniobic acid solution as a raw material. In the extraction separation step, sec-octyl alcohol is used for extracting the regulated niflumic acid material liquid to obtain an organic phase; subsequently the organic phase is pickled by a pickling agent; finally the pickled organic phase is re-extracted by an anti-niobium agent to obtain the ultrahigh-purity niobium oxide. The invention also provides the ultrahigh-purity niobium oxide prepared by the method; the percentage composition of Nb2O5 is larger than or equal to 99.995%; the content of each impurity satisfies the regulations of the standard YS/T548-2007 on product grades F Nb2O5-048 and F Nb2O5-045.

The invention provides an extraction method of lincomycin. The extraction method mainly comprises the following steps: adjusting acidity of fermentation liquor, filtering by using a ceramic ultrafiltration membrane, then adjusting alkalinity, then filtering by using a ceramic ultrafiltration membrane again, then carrying out primary sec-octyl alcohol extraction and hydrochloric acid back-extraction, adjusting alkalinity of the primary back extraction liquor and then filtering by using a ceramic ultrafiltration membrane again; carrying out secondary sec-octyl alcohol extraction and hydrochloric acid back-extraction and adding acetone to the secondary back extraction liquor to carry out evaporative crystallization. According to the extraction method provided by the invention, the yield of the lincomycin is high, the color grade of the lincomycin can be improved, and the B component content in the lincomycin is reduced. According to the extraction method of the lincomycin, the feed liquid quality of other extraction technologies can be improved by a membrane treatment process, the integral extraction efficiency is further improved, the residual volume of sec-octyl in raffinate in the extraction procedure is reduced, the product quality is improved, and meanwhile, the COD (Chemical Oxygen Demand) in produced wastewater is reduced. The extraction method has certain economic benefit and environmental benefit.

The disclosed method includes a capryl alcohol oxidation step and a crude oxidation liquid purification step, wherein in the capryl alcohol oxidation step, a downward injection type reactor is employed to use the closed injection cycle of the reaction liquid for charging nitric acid, air and nitroxides gases produced in the reaction into the reactor for mixing and reacting with capryl alcohol, in the crude oxidation liquid purification step, a non-washing physical method, i.e. an air blowing method is employed to remove the inorganic acidic impurity in the oxidation liquid, the processing time being 0.5-2.0 hours.

The invention provides a method for preparing 2-ethylhexyl chloroformate. The method comprises a step of reacting isooctyl alcohol with phosgene by using multiple stages of reaction kettles which areconnected in series. By adopting a micro-negative pressure system, hydrogen chloride generated by the reaction can be transferred in time, and unreacted phosgene in one reaction kettle can enter the next-stage reaction kettle for further reaction, so the utilization rate of phosgene and the conversion rate of isooctyl alcohol are improved, reaction time is greatly shortened, and industrial application value is relatively high.

The invention provides a mite-prevention and mildew-proof disinfector for an air conditioner and a preparation method of the mite-prevention and mildew-proof disinfector. The disinfector comprises the following raw materials: R-301, sec-octyl alcohol polyoxyethylene (5-6) ether, a non-ionic surfactant, diethylene glycol monobutyl ether, didoctyl dimethyl ammonium chloride, lemon essential oil and alcohol. The disinfector can permeate and be dispersed to an evaporator and an air supply system of the air conditioner rapidly, dissolves dirt quickly and completely, washes deeply, removes bacteria and viruses thoroughly, prevents an air-condition disease, automatically generates a washing and sterilization film in the evaporator and the air supply system, and can sterilize, and prevent mites and mildew continuously. The disinfector further comprises the lemon essential oil, so that light lemon fragrance can be reserved during cleaning of the air conditioner, and an environment is fresher and more pleasant.

The invention belongs to the technical field of fuel additives and particularly relates to an efficient fuel combustion-increasing agent. The efficient fuel combustion-increasing agent is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of butyl octadecenoate, 10-14 parts of polyether alcohol, 18-20 parts of isooctanol, 14-16 parts of fatty acid amide, 8-10 parts of triethylamine, 3-5 parts of di-iso-octyldiphenylamine, 1-3 parts of alkyl sodium sulfonate and 6-8 parts of methyl tertiary butyl ether. The efficient fuel combustion-increasing agent provided by the invention is prepared by the following steps: selecting the raw materials; then mixing according to a sequence of a formula; and quickly stirring for 3-6 minutes once one raw material is added. The efficient fuel combustion-increasing agent has the effects of saving energy, reducing emission, cleaning and increasing combustion.

The invention relates to the technical field of production of plasticizers and discloses a novel (1-sec-octyl, 2-tert-octyl)phthalate plasticizer and a preparation method thereof. The (1-sec-octyl, 2-tert-octyl)phthalate plasticizer takes sec-octyl alcohol, phthalic acid and industrial ethyl hexanol as raw materials. The preparation method comprises the following steps: refining the sec-octyl alcohol, and carrying out a primary esterification reaction with phthalic acid to prepare a DCP monoester mixed solution; performing steam stripping dealcoholization to prepare a refined DCP monoester; adding the refined DCP monoester and the industrial ethyl hexanol into a secondary reactor, adding a catalyst, and carrying out a constant-temperature esterification reaction to obtain a DCOP diester mixed solution; finally, performing alkaline wash, steam stripping dealcoholization and actived carbon decoloration on the DCOP diester, thereby obtaining the novel (1-sec-octyl, 2-tert-octyl)phthalateplasticizer. The preparation method is simple in process, low in cost, high in yield, easy to control and capable of realizing large-scale production, and the prepared (1-sec-octyl, 2-tert-octyl)phthalate plasticizer is excellent in plasticizing effect and high in stability.

The invention provides a preparation method of a phthalate plasticizer. The method specifically comprises the steps of esterification, crude dealcoholization, cooling, addition of a deacidifying agent, dealcoholization and filtration. The preparation method is adopted; treatment is carried out without a decolorizing agent, the chromaticity of the prepared phthalate plasticizer product can reach 10-15 # through platinum-cobalt standard colorimetry; phthalic anhydride and sec-octyl alcohol are used as raw materials; the acid value of the dioctyl phthalate prepared by the preparation method disclosed by the invention is less than or equal to 0.05 mgKOH/g; wherein the water content is less than or equal to 0.05%, the alcohol content is more than or equal to 99.5% and the alcohol content is less than or equal to 0.005%, and meanwhile, neutralizing and washing steps can be reduced, the wastewater amount is reduced, the alkali washing, washing and settling time is saved, the production cost is greatly reduced and the production benefit is increased.

The invention belongs to the technical field of spice synthesis, in particular to a synthesis method of a high-content dihydroisojasmone spice. The synthesis method comprises the following steps: by taking 2-octanol as a solvent, di-tert-butyl peroxide as an initiator and boron acid as catalyst, enabling acrylic acid and 2-octanol to be subjected to a free radical addition reaction and a reflux reaction to separate out tert-butyl alcohol and water, performing reduced pressure distillation to realize recycling of 2-octanol, collecting 5-methyl-5-hexyl-2 (3H) furanone, and rearranging and dehydrating 5-methyl-5-hexyl-2 (3H) furanone molecules under the action of a solid acid catalyst by taking white oil as a solvent to synthesize a dihydroisojasmone spice product. The synthesis method provided by the invention has the advantages of relatively simple steps, no generation of acidic wastewater and relatively high total yield. In addition, through calculation, the content of dihydroisojasmone in the product synthesized by the synthesis method provided by the invention is up to 98% or above.

The invention provides a novel method for recovering residual butyl alcohol-octyl alcohol. According to the method, in a first rectifying tower (namely a butyraldehyde tower), butyraldehyde and butylalcohol are separated, at the same time, dehydration is carried out; butyl alcohol is extracted out from the top of a second rectifying tower, the purity of extracted butyl alcohol should be greater than 98 wt.%; all C5-C7 components such as butyl butyrate are extracted out from the top of a third rectifying tower; octyl alcohol and octenal are extracted out from the top of a fourth rectifying tower, and the purity of octyl alcohol is more than 98 wt.%.

The invention discloses a functional welding paste. The functional welding paste comprises the following components in percentage by mass: 3-40% of organic silicon resin containing double bonds, 20-40% of ethylene glycol monobutyl ether acetate, 1-10% of silicon dioxide, 10-20% of a leveling agent for a welding material, 0.3-5% of phosphoric acid, 1-5% of potassium persulfide, 10-20% of octyl alcohol, 1-4% of aluminum powder, 0.5-2% of hydrated magnesium silicate, 1-4% of calcium fluoride, 1-15% of titanium dioxide, 1-4% of calcium carbonate and 0.1-2% of cerium fluoride. The invention also discloses a preparation method of the functional welding paste. The fracture mechanical property strength of a welding joint of a weldment after using the functional welding paste can be up to 700MPa; the coating corrosion resistance can be up to 420h (salt spray test); the adhesive force is of grade 1 (one hundred grid test); and the Brinell hardness is 60HBW.

The present invention provides a methyl decyl lactone synthetic perfume normal pressure production method, raw materials are easy to obtain, product yield is high, process conditions are mild, production cost is low, the process of production is free of environmental pollution, and the raw materials cause no production equipment corrosion. The method includes the following steps: a) stirring and mixing evenly acrylic acid, sec-octyl alcohol, initiator di-tertiary butyl peroxide and catalyst boric acid; b) adding the sec-octyl alcohol into a reaction kettle according to the dosage; c) dropwise adding the mixture obtained by the step a) into the reaction kettle for atmospheric pressure reaction; d) stirring at 100-200 DEG C for reaction for 2-5 hours; e) transferring reaction products into a water washing pot, adding clear water for layering, and separating the lower layer water phase; f) transferring upper layer organic phase reaction products to a kettle type distillation tower, heating, recycling the sec-octyl alcohol under vacuum; and g) transferring surplus reaction products into a kettle type rectification tower for fractionation to obtain methyl decyl lactone with the content of 99%.

The invention provides a synthesis method of 8-chloro ethyl caprylate. The synthesis method comprises the following steps: S1, carrying out chlorination reaction on 1, 8-octanediol and a chlorinationreagent in an aromatic solvent to obtain 8-chloro-1-octyl alcohol; s2, carrying out oxidation reaction on the 8-chloro-1-octyl alcohol and an oxidizing agent to obtain 8-chloro caprylic acid; and S3,carrying out esterification reaction on the 8-chloro caprylic acid and ethanol under the action of a catalyst to generate the 8-chloro ethyl caprylate. According to the synthesis method of the 8-chloro ethyl caprylate, a high-purity product can be obtained, and the method is simple, convenient, easy to treat, simple in process, capable of overcoming the defects in the prior art and suitable for achieving industrial production. According to the synthesis method of the 8-chloro ethyl caprylate, the high-purity product can be obtained, and the method is simple, convenient, easy to treat, simple in process, few in side reaction and suitable for industrial production.

The invention discloses high temperature resistant high-performance engineering plastics. The engineering plastics comprise the following components in parts by weight: 15-25 parts of phenolic resin,15-25 parts of ABS, 10-15 parts of polybutylene terephthalate, 0.1-1.5 parts of an antioxidant, 0.3-1.5 parts of a lubricant, 1-9 parts of a toughening agent, 0.1-1 part of fillings, 0.2-1 part of Al2O3, 0.5-1 part of SiO2, an auxiliary agent and a solvent, wherein the auxiliary agent comprises 0.2-1.5 parts of a nucleator, 0.2-3 parts of a fire retardant and 0.2-2 parts of a dispersing agent, andthe solvent comprises 0.5-2 parts of poly ethanol and 0.1-1 part of n-octyl alcohol. The high temperature resistant high-performance engineering plastics disclosed by the invention are good in high temperature resistant effects, and can be effectively applied to high temperature field; besides, cardboard respects disclosed by the invention are simple but not tedious to operate; the high temperature resistant properties of the prepared engineering plastics are better.

The invention relates to a cross-linking agent for cathode electrophoretic paint and a production process thereof. The cross-linking agent is prepared from the following ingredient raw materials in parts by weight: 40 to 53 parts of composite alcohol ether, 24 to 33 parts of TDI (toluene diisocynate), 19 to 24 parts of isooctanol and 0.2 to 0.3 part of organic tin liquor. The cross-linking agent has the advantages that the process is simple, the maneuverability is high, and the like. In the preparation process of the cross-linking agent, the volatilization cannot easily occur; safety and environment protection are realized. The paint produced by using the cross-linking agent has the advantages that the paint film thickness is greater, and the anti-corrosion performance is greatly improved.

The invention discloses a high-temperature-resistant power protection pipe which is characterized by being prepared from the following raw materials in parts by weight: 100-130 parts of polyvinyl chloride, 2-4 parts of magnesium hydroxide, 0.1-0.4 part of stearic acid, 6-10 parts of calcium carbonate, 0.2-0.5 part of sodium lignosulfonate, 1-2 parts of nano antimony trioxide, 0.5-1 part of sodium oleate, 0.4-1 part of a silane coupling agent kh550, 1-2 parts of sodium stearate, 2-3 parts of chlorinated polyethylene, 0.5-1 part of epoxidized soybean oil, 0.3-0.7 part of zinc butyl octyl alcohol dithiophosphate, 1-2 parts of oxidized polyethlene wax, and a proper amount of water. The high-temperature-resistant power protection pipe has the advantages of excellent high-temperature resistance, good corrosion resistance, good aging resistance, good flame retardancy, high mechanical strength and high toughness, and the service life of the high-temperature-resistant power protection pipe is prolonged.

The invention discloses a combined collecting agent suitable for flotation of rubidium-containing fine-grained mica. The combined collecting agent comprises dodecylamine and sec-octyl alcohol in a weight ratio of 1: (1-2). In addition, the invention further discloses an application of the combined collecting agent suitable for flotation of the rubidium-containing fine-grained mica. The combined collecting agent is applied to the following ore samples: tuff-type rubidium-containing biotite ore and skarn-type rubidium-containing biotite ore, the particle size is smaller than or equal to 0.032 mm, the combined collecting agent is adopted for flotation, and the using amount of the combined collecting agent is 250-280 g/t according to the ore samples. The combined collecting agent has the advantages of being low in foam viscosity, good in fluidity, easy to prepare and the like, entrainment of fine-grain gangue in concentrate foam can be effectively reduced, and therefore the rubidium gradeof rubidium concentrate is improved, the cost of beneficiation reagents is reduced, and industrial application and development of rubidium resources are facilitated.

The invention belongs to the technical field of smoke component detection, and particularly relates to a method for determining floral components in mainstream smoke of cigarettes. The method comprises the following steps: extracting collected cigarette mainstream smoke particulate matters by using acetone to obtain an extracting solution; analyzing the extracting solution by adopting gas chromatography-mass spectrometry, and detecting the content of the floral components by adopting an internal standard method, wherein an internal standard substance used in the internal standard method is storax propionate, and the floral component is composed of heptanol, sec-octyl alcohol, p-toluenemethyl ether, 2-ethylhexanol, ocimene, phenylacetaldehyde and other components with floral fragrance. Themethod disclosed by the invention can be used for simultaneously detecting the contents of the 45 floral components in the cigarette smoke, and has the advantages of rapid detection, high sensitivity,good selectivity and high accuracy.