62 results about "Isocaproic acid" patented technology

The invention relates to the technical field of heavy anti-corrosion coatings, in particular to a graphene enhanced epoxy modified organic silicon resin heavy anti-corrosion powder coating. The coating is prepared from the following components in parts by weight: 42 to 58 parts of epoxidized epoxy modified organic silicon resin, 0.8 to 2.5 parts of hydroxylated graphene, 6 to 11 parts of nano zirconium dioxide coated boron nitride, 2.5 to 5.5 parts of lanthanum iso-octoate-titanate composite coupling agent, 1.5 to 3.5 parts of bis (3-triethoxysilylpropyl) disulfide, 4 to 7 parts of polyhedral oligomeric silsesquioxane, 5 to 8 parts of curing agent, 0.8 to 1.8 parts of flatting agent and 0.4 to 0.9 part of defoaming agent. 2.5 to 4.5 parts of polyether-ether-ketone micro powder and 1.2 to 2.8 parts of fluorine-containing phosphate ester. According to the invention, the resin is modified through chemical bridging, the modified graphene and the nano-coated powder are matched to construct a synergistic enhancement system, and the interface bonding is optimized by the composite coupling agent. The coating is excellent in adhesive force, corrosion resistance and mechanical property, good in processing fluidity and high in aging resistance and thermal stability, solves the problem that a traditional product is short in performance, and meets the industrial requirement.

The invention discloses an oxidation kettle and a method for preparing an isocaprylic acid intermediate product sodium isocaprylate, the oxidation kettle comprises a kettle body and a jacket fixedly sleeved outside the circular outer part and the bottom end of the kettle body, a sealing seat is arranged at the center of the top end of the kettle body, a speed reducer is fixed at the top end of the sealing seat through a flange and a screw, and a speed reduction shaft of the speed reducer penetrates through the sealing seat; a speed reducer is arranged in the kettle body, the top end of the speed reducer is in transmission connection with a stirring motor, the stirring motor is electrically connected with an external power supply through an electric wire, and a stirring shaft is vertically arranged at the center of the kettle body. According to the device, the stirring effect on fluid in the kettle body can be enhanced through automatic up-down swinging of the metal stirring rollers, synchronous swinging of the multiple stirring rollers is achieved through the linkage mechanism, stable and controllable swinging action is ensured through the driving mechanism, the mixing uniformity and reaction efficiency of materials in the oxidation kettle are remarkably improved, and the production cost is reduced. And the stirring requirements of high-viscosity and easily-layered materials are met. The oxidation kettle can be used for preparing an isocaprylic acid intermediate product sodium isocaprylate.

The application provides a method for preparing lithium iron phosphate by using waste lithium isooctanoate catalyst, and comprises the following steps: grinding and sieving the waste lithium isooctanoate catalyst to obtain lithium isooctanoate powder; mixing the lithium isooctanoate powder with water, adding concentrated hydrochloric acid to perform leaching reaction to obtain leaching slurry; filtering the leaching slurry to obtain filtrate and residue; adding activated carbon to the filtrate to perform adsorption and filtration, then adding HCl and FeCl3·6H2O to stir, and controlling the pH of the solution to be 1.0-1.5 to obtain an aqueous phase; uniformly mixing tributyl phosphate and sulfonated kerosene to obtain an organic phase; mixing, oscillating, standing and separating the aqueous phase and the organic phase to obtain an extraction phase and a raffinate phase; washing the extraction phase by using dilute hydrochloric acid to remove impurities, adjusting the molar ratio of P, Fe and Li in the extraction phase after impurity removal, adding a carbon source to obtain mixed slurry; performing spray drying on the mixed slurry, and performing high-temperature sintering, crushing and screening on the powder obtained by spray drying to remove iron, so as to obtain lithium iron phosphate. The application scheme realizes resource recycling and utilization, and the prepared product has high quality and low cost.

The invention discloses weather-resistant and medium-resistant alkyd resin varnish and a preparation method thereof. The varnish is prepared from the following raw materials: modified alkyd resin, a composite drier, zirconium iso-octoate with the purity of 12%, an anti-skinning agent, 200 # solvent oil and xylene. The modified alkyd resin is prepared from the following raw materials: soya oil acid, pentaerythritol, benzoic acid, pyrrolidine-2-one-1-acetic acid, dimethylbenzene and a 200 # solvent. According to the invention, pyrrolidine-2-ketone-1-acetic acid is used as a binary acid component to partially or completely replace traditional phthalic anhydride, so that the reaction efficiency of alkyd resin synthesis can be improved, and the problems of yellowing, pulverization and poor water resistance of traditional alkyd resin can be solved; according to the varnish prepared by the invention, on the basis of maintaining the inherent gloss, flexibility and constructability of alkyd resin, the key properties such as weather resistance, water resistance and acid resistance are improved; the whole preparation process of the varnish continues to use mature alkyd resin production equipment and flow, and has good economical efficiency and industrial popularization prospects.

The invention provides a method for preparing amorphous avibactam sodium by an anti-solvent method, which comprises the following steps: dropwise adding a solution of sodium isooctoate into a solution of avibactam tetrabutyl ammonium salt, then concentrating, quickly pouring the concentrated solution into an anti-solvent system at one time, and quickly separating out an amorphous solid. The amorphous avibactam sodium is prepared through anti-solvent precipitation, the process is stable and controllable, and the prepared product is high in purity and yield and can be stably stored; the method is simple in steps, and the solvent is a common solvent, so that the production cost is greatly reduced; generation of a large amount of acidic and alkaline wastewater is greatly reduced, and pollution to the environment is reduced; and the method has the advantages of short production period and low energy consumption, meets the requirements of large-scale production, and provides a feasible scheme for industrial production of the avibactam sodium amorphous product.

The invention relates to the field of lubrication of ball screws, in particular to long-life creep-resistant lubricating grease for a high-precision ball screw, which comprises the following components in parts by weight: 65 parts of polyolefin, 5-10 parts of pentaerythritol ester, 5-10 parts of isocyanate, 2-5 parts of amine chain extender, 5 parts of PTFE (polytetrafluoroethylene), 1.0-1.5 parts of diphenylamine, 0.1-0.5 part of 2, 4-diphenyl-1, 3-pentanediol monoisobutyrate, 0.1-0.5 part of antioxidant, 0.1-0.5 part of antioxidant and 0.1-0.5 part of lubricant. The composite material is prepared from the following components in parts by weight: 0.5 to 1 part of 2, 6-butylated hydroxytoluene, 1.5 to 2 parts of molybdenum isocaprylate, 0.5 to 1 part of molybdenum bis (2-ethylhexyl) dithiocarbamate, 1 to 2 parts of zinc dialkyl dithiophosphate, 3 parts of calcium petroleum sulfonate, 1 to 1.5 parts of polyisobutene, 0.2 to 0.5 part of benzotriazole and 0.1 to 0.3 part of polymethacrylate. The isocyanate comprises HDI and IPDI, and the amine chain extender comprises TETA and TEPA. According to the invention, isocyanate and the amine chain extender react to form a polyurea macromolecular chain, and a high-energy hydrogen bond network is formed, so that the lubricating grease has relatively high creep resistance; the anti-creep performance is further enhanced through cooperation with the PTFE particles; meanwhile, through cooperation with diphenylamine, the oxidation resistance is promoted, the consumption is reduced, and the service life of the lubricating grease is longer.

The application discloses a high-flash-point fireproof coating based on heat-resistant phenyl phosphine oxide and a preparation method thereof, and relates to the technical field of fireproof and flame-retardant coating.The high-flash-point fireproof coating based on heat-resistant phenyl phosphine oxide comprises the following components in parts: heat-resistant phenyl phosphine oxide 10-15 parts, cobalt isooctoate 1-3 parts, methyl ethyl ketone peroxide 0.2-1 part, epoxy resin 140-160 parts and curing agent 90-110 parts; the epoxy resin is epoxy resin 828 or epoxy resin 815 or epoxy resin C 14 H 20 O4.The heat-resistant phenyl phosphine oxide contains phosphorus with flame-retardant effect and has a high thermal decomposition temperature; as a flame-retardant additive, the heat-resistant phenyl phosphine oxide can improve the thermal stability of the coating, thereby avoiding early degradation of the polymer and improving the flash point of the coating, and the flash point is greater than 60 DEG C.

The application discloses a resin gold paste suitable for a printing transfer process, wherein the resin gold paste is composed of the following components in mass fraction: 20-50% of vulcanized benzoin gold, 0.5-3% of bismuth cyclopentanate, 0.1-1% of copper isooctanoate, 0.1-1% of rhodium isooctanoate, 5-30% of a high polymer resin, 0.3-4% of an additive and the rest of a solvent; the additive is composed of an additive A and an additive B, the additive A is one or more of polyethylene wax paste, polyamide wax paste, bentonite and hydrogenated castor oil, the additive B is one or more of a silicone lubricant, stearic acid amide and oleamide, and the mass ratio of the additive A to the additive B is 1:0.3-0.4. The resin gold paste is particularly suitable for the printing transfer process, has good printing performances such as rheological properties and screen passing properties, effectively reduces the phenomena of plate sticking, screen blocking and broken lines during continuous printing, and has high printing resolution, and is particularly suitable for being used as the resin gold paste for the printing transfer process.

The application belongs to the technical field of cooling liquid, and provides a mixed organic engine cooling liquid and a preparation method thereof.The cooling liquid comprises the following components in percentage by mass: 75-80% of ethylene glycol, 8-10% of polyethylene glycol-isooctanoic acid copolymer, 2-3% of chelating agent, 0.8-1.0% of corrosion inhibitor, 0.1-0.3% of defoaming agent and deionized water in remainder; the polyethylene glycol-isooctanoic acid copolymer is prepared from polyethylene glycol and isooctanoic acid, and the polyethylene glycol is PEG-2000 with a molecular weight of 2000.The application can ensure that the mixed organic engine cooling liquid has excellent metal corrosion prevention performance when meeting hard water.

The invention discloses application of a nutritional composition containing alpha-hydroxyisocaproic acid in weight management and blood fat improvement, and belongs to the fields of biological medicine manufacturing, biological medicine application and functional food development. The nutritional composition comprises alpha-hydroxyisocaproic acid and at least one second functional nutritional component, and the second functional nutritional component is preferably selected from one or more of the following components: 1) one or more of tea polyphenol and capsaicin; 2) one or more of beta-glucan, inulin and resistant dextrin; 3) one or more of medium chain triglyceride and sn-1, 3 diglyceride; under the condition of the same intake cycle and dosage, the nutritional composition can significantly improve the weight management effect and reduce related indexes of blood fat through a multi-way synergistic effect, and is combined with GLP-1 drugs or sequentially applied to weight management so as to reduce the risk of weight rise after drug withdrawal.

The invention provides an ultrahigh-base-number composite calcium salt detergent, a preparation method thereof and a lubricating oil complexing agent. The preparation method comprises the following steps: mixing solvent oil, base oil, an accelerant A, an accelerant B, sulfonic acid, salicylic acid, first inorganic calcium and an accelerant C for neutralization reaction; carbon dioxide is introduced, second inorganic calcium and water are added for a carbonation reaction, a product is purified after the reaction is finished, and the composite calcium salt detergent is obtained; the accelerant B is selected from a combination of two or more than three of polyisobutylene succinic anhydride, dodecenyl succinic anhydride, polymethacrylate, trimethylolpropane isooctoate, alkylphenol formaldehyde resin and benzylamine. The composite calcium salt detergent disclosed by the invention has the advantages of ultrahigh base number and better thermal stability, and can fundamentally improve the problem of precipitation when calcium sulfonate and calcium salicylate are compounded.

The application relates to the chemical process field and discloses a catalyst with a function of reducing chroma and a method for preparing isooctanoic acid. The catalyst and the method for synthesizing isooctanoic acid can reduce the chroma of isooctanoic acid products and downstream products prepared by using isooctanoic acid as raw materials after long-time storage, improve product quality, reduce the requirement of the raw material storage environment, thereby reducing the cost and improving the benefit.

The invention discloses modified alkyd resin enamel paint and a preparation method thereof, and relates to the technical field of alkyd resin paint. The modified alkyd resin enamel paint is prepared from the following raw materials: fluorosilicone acrylic acid composite modified alkyd resin, scarlet powder, precipitated barium sulfate, a composite drier, zirconium iso-octoate with the purity of 12%, an anti-skinning agent and xylene. The fluorosilicone acrylic acid composite modified alkyd resin is prepared from basic alkyd resin, an acrylic acid prepolymer, vinyltriethoxysilane, 4-(2, 2-difluoroethyl) benzoic acid, an initiator, a solvent and a catalyst. The fluorosilicone acrylic acid composite modified alkyd resin is formed through step-by-step reaction of the acrylic acid prepolymer, the vinyltriethoxysilane and the 4-(2, 2-difluoroethyl) benzoic acid, so that the weather resistance, the water resistance, the pollution resistance and the adhesive force of a coating are improved, the modified alkyd resin still has good leveling property, the cost is prevented from being out of control, and the service life of the coating is prolonged. And both economy and practicability are considered.

A method for recovering effective components from oxacillin sodium mother liquor belongs to the technical field of medicine manufacturing, and comprises the following steps: S1, heating the oxacillin sodium mother liquor, and carrying out reduced pressure distillation; adding water into the kettle residue, stirring, standing for layering, and obtaining a water phase for later use; s2, activating anion exchange resin; s3, adding the water phase obtained in the step S1 into the anion exchange resin treated in the step S2, starting adsorption, washing with water to be neutral after adsorption is completed, eluting with 1%-5% sodium hydroxide, and collecting liquid which is an oxacillin sodium water solution; s4, heating the oxacillin sodium aqueous solution to 40 DEG C, adding hydrochloric acid, adjusting the pH value to 3.0-4.0, and preserving heat and growing crystals for 1 hour; dropwise adding hydrochloric acid, adjusting the pH value to 1.5-2.5, cooling and growing crystals for 2 hours, and drying to obtain oxacillin acid solid; s5, dissolving the oxacillin acid solid in a 95% alcohol solvent, dropwise adding a sodium isooctanoate solution, and crystallizing after dropwise adding; cooling and growing crystals for 2 hours, filtering to obtain a wet material, and drying to obtain oxacillin sodium. The method is easy to implement, and the product quality is stable.

The invention provides a multifunctional environment-friendly dust suppressant and a preparation method thereof, and relates to the field of dust control. The coating comprises a solution A and a solution B. The solution A comprises the following raw materials in percentage by mass: 5-10% of polyether polyol, 3-5% of isocyanate, 5-10% of carboxymethyl cellulose, 1-5% of a nonionic surfactant, 1-2% of a humectant, 1-2% of a film-forming agent, 1-2% of bentonite and the balance of water. The solution B is prepared from the following raw materials in percentage by mass: 1 to 3 percent of 2-amino-fluorobenzylamine, 0.5 to 1 percent of bismuth isooctoate, 5 to 10 percent of modified starch, 1 to 5 percent of polyvinyl alcohol and the balance of water. The polyether polyol and the isocyanate in the raw materials can form a polyurethane curing layer under the action of the catalyst, and hydroxyl groups in the modified starch and the polyvinyl alcohol in the raw materials can participate in the reaction of polyurethane to form the polyurethane curing layer with a three-dimensional network structure, so that the strength of the curing layer is improved.

The invention discloses a method for preparing stannous octoate by sectional distillation, which comprises the following steps: adding isocaprylic acid, metallic tin, a catalyst and an antioxidant into a reaction container in proportion, heating to promote the reaction of the materials, and directly synthesizing a stannous octoate crude product; and carrying out two-stage reduced pressure distillation on the stannous octoate crude product, respectively distilling for 5-10 minutes under the conditions that the temperature is 60-70 DEG C and the pressure is 0.02-0.03 MPa, and then distilling for 15-20 minutes under the conditions that the temperature is 90-100 DEG C and the pressure is 0.06-0.08 MPa to obtain the stannous octoate product. The production process is simple, the utilization rate of raw materials such as metallic tin and isocaprylic acid is high, the production cost is low, the method is green and environment-friendly, the stannous octoate product is easy to separate, and the obtained stannous octoate product is good in quality.

An unsaturated polyester resin for diamond resin and its preparation method are disclosed, belonging to the technical field of polyester resins. It is composed of the following components: maleic anhydride, DCPD, DEG, EG, antioxidant, polymerization inhibitor, paraffin wax, styrene, composite accelerator, and water; the composite accelerator is composed of cobalt isooctanoate, copper isooctanoate, and potassium isooctanoate in a weight ratio of 1:2 to 4:6. The preparation steps are: 1) Add maleic anhydride, DEG, antioxidant, and water; heat and add DCPD, maintaining the temperature; 2) Add EG, MA, DEG, antioxidant, and polymerization inhibitor; heat and react; 3) Cool and add polymerization inhibitor and paraffin wax; cool and add styrene and the composite accelerator to obtain the unsaturated polyester resin for diamond resin; the composite accelerator is obtained by premixing cobalt isooctanoate, copper isooctanoate, and potassium isooctanoate in a weight ratio of 1:2 to 4:6 at 25 to 60°C. This invention features excellent mechanical properties, good air-drying properties, high solids content, and low linear shrinkage.

The invention relates to PBAT (poly (butylene adipate-co-terephthalate)) resin for a full-biodegradable mulching film and a synthesis method thereof. The invention discloses PBAT resin for a full-biodegradable mulching film. The PBAT resin is prepared from the following raw materials: an AA esterification raw material, a PTA esterification raw material and a pre-polycondensation auxiliary agent, the AA esterification raw materials comprise adipic acid, 1, 4-butanediol, a compound catalyst and an auxiliary agent 1; the auxiliary agent 1 is prepared from ethyl orthosilicate and zinc isoocatanoate; the PTA esterification raw materials comprise terephthalic acid, 1, 4-butanediol, a compound catalyst and an auxiliary agent 2; the auxiliary agent 2 is ethyl orthosilicate; the compound catalyst is a titanium phosphorus compound catalyst; the pre-polycondensation auxiliary agent is an antioxidant and aluminum-magnesium hydrotalcite. According to the PBAT resin for the full-biodegradable mulching film and the synthesis method of the PBAT resin, on the basis of an existing PBAT conventional catalytic system, different functional auxiliaries are introduced in different stages, and the mechanical property, the water retention capacity and the hydrolysis resistance of the polymerized PBAT resin are effectively improved through the synergistic effect of the different functional auxiliaries.

The invention discloses a polyurethane adhesive as well as a preparation method and application thereof. The polyurethane adhesive disclosed by the invention is prepared from a prepolymer, toluene triisocyanate TTI, a composite regulator and a carboxyl modifier, the preparation method of the prepolymer comprises the following steps: reacting dimethylolpropionic acid, isocyanate and polyol to prepare the prepolymer; the composite regulator comprises bismuth isooctoate and caprolactam; the carboxyl modifier is selected from one or a mixture of more than two of succinic acid, adipic acid and citric acid. The opening time of the polyurethane adhesive disclosed by the invention is obviously shortened to 10-25 minutes, so that the polyurethane adhesive is suitable for rapid construction requirements; the tensile shear strength of the polyurethane adhesive is 6-14 MPa and is improved by 15% or above compared with that of a traditional polyurethane adhesive, the interface peel strength is 15-22 N / mm and is improved by 20% or above when the polyurethane adhesive is used for bonding a metal base material, and the elongation at break is 450% or above.

The invention discloses a liquid barium-zinc stabilizer and a preparation method and application thereof, and the liquid barium-zinc stabilizer is prepared from the following raw materials in parts by weight: 5-15 parts of oleic acid, 5-20 parts of p-tert-butylbenzoic acid, 2-8 parts of isocaprylic acid, 5-10 parts of diethylene glycol butyl ether acetate, 5-10 parts of cycloalkane, 5-10 parts of D80, 2-5 parts of zinc oxide, 4-10 parts of barium hydroxide monohydrate, 10-20 parts of barium salt and 2-6 parts of dibenzoylmethane. 15-25 parts of phenol-free phosphite ester and 2-6 parts of an antioxidant. The liquid barium-zinc stabilizer prepared by the invention cannot be subjected to curing reaction with an adhesive to cause degumming, and has excellent heat resistance and heat-resistant stability.

The invention belongs to the technical field of refrigerating machine oil, and particularly relates to isocaprylic acid and isononanoic acid triglyceride and application thereof. The isocaprylic acid and isononanoic acid triglyceride comprises the following raw materials: isocaprylic acid, isononanoic acid, glycerol, an adsorbent and a catalyst, wherein the molar ratio of the isocaprylic acid to the isononanoic acid is 6: (9-14). By adjusting the ratio of isocaprylic acid to isononanoic acid in the raw materials of the isocaprylic-isononanoic triglyceride, the lubricating property of the isocaprylic-isononanoic triglyceride obtained by the reaction is improved, so that the lubricating property, glossiness and air permeability of the isocaprylic-isononanoic triglyceride are similar to or even slightly superior to those of caprylic-capric triglyceride when the isocaprylic-isononanoic triglyceride is used for cream cosmetics.

The application provides a refrigeration machine oil base oil, a refrigeration machine oil, a fluid composition and a refrigeration compressor. The refrigeration machine oil base oil comprises a first polyol ester, which is obtained by esterification reaction of adipic acid and iso-octanoic acid with pentaerythritol and then removal of acid by a neutralizing agent. The refrigeration machine oil base oil has excellent rheological properties, refrigerant compatibility and friction performance, has a low acid value, reduces corrosion of compressor pump body parts, and one of raw materials of the first polyol ester of the refrigeration machine oil base oil is adipic acid, so that a polymerized long-chain structure is generated, and the friction performance of the lubricating oil is improved.

The application provides a spherical potassium clavulanate, a preparation method thereof and a compound preparation. The spherical potassium clavulanate has a spherical diameter of 25-150 microns. The preparation method of the spherical potassium clavulanate is as follows: 1. Dissolving a tertiary butylamine salt in an organic solvent to obtain an amine salt solution; 2. Preparing a potassium isooctanoate solution by dissolving potassium isooctanoate in an appropriate amount of organic solvent; 3. Removing carbon in the solution by adding activated carbon into the amine salt solution, stirring, filtering and washing the carbon with a small amount of organic solvent; 4. Crystallizing by controlling the temperature of the crystallization solution at 16-20 DEG C, stirring and adding the potassium isooctanoate solution at a constant speed; after the addition is completed, the temperature is lowered to 2-6 DEG C, and the stirring and heat preservation are performed for greater than or equal to 2 hours; 5. Filtering, washing and drying by filtering the crystallization solution, washing the solution with a solvent at 2-6 DEG C for 3-4 times, and vacuum drying the wet powder by cold pumping for 1 hour and drying at 35 DEG C for 6 hours. The spherical potassium clavulanate prepared by the method has uniform particle size distribution, good fluidity, easy dispensing and quality meeting the standard of the 2020 edition of the Chinese Pharmacopoeia.

The invention belongs to the technical field of preparation of thickeners, and particularly relates to a preparation method of aluminum isooctanoate, which comprises the following steps: mixing and dissolving a catalyst functionalized heteropolyacid ionic liquid and a boron tetrafluoride ionic liquid, adding isopropanol into the mixture, introducing pure oxygen under reflux at 100-110 DEG C, stirring for reaction, extracting the reaction liquid with anhydrous ether for three times, merging organic phases, and concentrating to obtain the aluminum isooctanoate. Washing, drying and carrying out reduced pressure distillation to obtain isocaprylic acid; the preparation method comprises the following steps: heating isocaprylic acid to 60-70 DEG C, dropwise adding glacial acetic acid under a stirring condition, continuously heating to 140-150 DEG C, adding aluminum hydroxide, reacting for 6-8 hours, cooling after the reaction is completed, grinding, crushing, washing and drying to obtain aluminum isocaprylate. In the preparation process of the isocaprylic acid, the functionalized heteropolyacid ionic liquid is adopted as a catalyst, pure oxygen is adopted as an oxidizing agent, isooctanol is catalytically oxidized to be converted into the isocaprylic acid, and the functionalized heteropolyacid ionic liquid has the advantages of being good in catalytic effect and small in corrosion to equipment.

The application provides a kind of twelve functional light-curable acrylate and its preparation method, specifically relates to UV light curing technical field.The synthesis of the twelve functional light-curable acrylate is mainly divided into two steps, the intermediate product side double bond ikon diol in the first step is made from the following mass fraction components: 26.02 mass parts of ikon acid, 45.66 mass parts of allyl glycidyl ether, 0.8-1.0 mass parts of N, N-dimethylformamide, 0.7-0.8 mass parts of tetrabutylammonium bromide, 0.1-0.3 mass parts of methoxyphenol;The twelve functional light-curable acrylate in the second step is made from the following mass fraction components: 35.84 mass parts of side double bond ikon diol, 33.34 mass parts of isophorone diisocyanate, 29.83 mass parts of pentaerythritol triacrylate, 0.1-0.3 mass parts of isooctanoic acid stannous and 0.1-0.3 mass parts of p-methoxyphenol.The twelve functional light-curable acrylate prepared by the application has fast UV curing speed, high efficiency, and the coating after curing has high hardness.

The utility model provides an isocapryloyl chloride production system. The isocapryloyl chloride production system comprises a reaction unit, a tail gas treatment unit and a distillation unit, the reaction unit comprises a reaction kettle, a circulating pipeline, and a nitrogen supply pipeline, a solvent supply pipeline, a catalyst supply pipeline, an isocaprylic acid supply pipeline and a phosgene supply pipeline which are connected with the reaction kettle; the reaction kettle is provided with a tail gas outlet and an emergency gas release port which are connected with the tail gas treatment unit; a circulating inlet is formed in the side wall of the reaction kettle; the circulating pipeline is connected with the discharge hole and the circulating inlet; a pipeline, extending into the reaction kettle, of the isocaprylic acid supply pipeline is of a sleeve structure, and isocaprylic acid enters from an inner pipe; the nitrogen supply pipeline and the phosgene supply pipeline both extend into the bottom of the inner cavity of the reaction kettle, and the phosgene supply pipeline is also communicated with the outer pipe of the sleeve structure; and a non-condensable gas outlet of the distillation unit is connected with the tail gas treatment unit. The isocapryloyl chloride production system disclosed by the utility model is good in tail gas treatment effect, reactants can be fully mixed, and the phosgene content in reaction completion liquid is reduced.

The invention belongs to the technical field of chemical synthesis, and discloses a cefotaxime sodium synthesis method based on one-step salification of a mixed solvent system and sodium isooctanoate. The method comprises the following steps: by taking 7-aminocephalosporanic acid (7-ACA) and 2-(2-aminothiazole-4-yl)-2-(methoxyimino) acetoxyimino ethyl acetate (AE active ester) as raw materials, in a dichloromethane-methanol mixed solvent, completing a condensation reaction through triethylamine catalysis, directly dropwise adding a sodium isooctanoate acetone solution to realize salification in one step, and carrying out post-treatment to obtain the 7-aminocephalosporanic acid (7-ACA)-2-(methoxyimino) acetoxyimino ethyl acetate (AE active ester)-2-(methoxyimino) acetoxyimino ethyl acetate (AE active ester). The cefotaxime acid intermediate does not need to be separated; and performing low-temperature washing and accurate drying subsequently to obtain a cefotaxime sodium finished product. According to the method, the defects that in the prior art, a two-step method needs intermediate separation and a one-pot method needs alkaline degradation are overcome, the production period is shortened to be smaller than or equal to 8 h, the total yield is larger than or equal to 92%, the HPLC purity is larger than or equal to 99.6%, the wastewater COD is smaller than or equal to 2000 mg / L, solvent residues meet the ICH Q3C standard, and the method has the advantages of industrial feasibility and environmental protection.

This invention discloses a highly efficient catalytic synthesis method for isooctanoic acid, belonging to the field of isooctanoic acid preparation technology. The highly efficient catalytic synthesis of isooctanoic acid includes the following steps: N1: Mixing n-butyraldehyde and a bifunctional solid catalyst, introducing hydrogen gas, and heating to 110-130℃ for 5-7 hours, followed by post-treatment to obtain isooctaldehyde; adding a phosphomolybdate catalyst to isooctaldehyde, introducing air, stirring, and heating to 50-60℃ for 3-5 hours, followed by post-treatment to obtain isooctanoic acid; the bifunctional solid catalyst is Ni / MgO-TiO2; the phosphomolybdate catalyst is Cs. 1.5 H 1.5 PMo 12 O 40 @SiO2. The preparation process of isooctanoic acid in this invention exhibits good n-butyraldehyde conversion and yield, and the catalyst is easily recovered and reused, which is beneficial for industrial conversion applications.

The invention discloses spherulitic cloxacillin sodium and a preparation method thereof, and belongs to the field of medicine synthesis. The spherocrystal is a spherical polycrystalline aggregate which is formed by radially growing towards each radial direction by taking a crystal nucleus as a center. The preparation method comprises the following steps: taking 6-APA, o-chloroacyl chloride and sodium isooctanoate as initial raw materials; the method comprises the following steps: adding water, NaOH and other solutions into 6-APA to form a 6-APA dissolving unit, then adding an o-chloroacyl chloride acetone solution to form an acylation unit solution, then adding dichloromethane, carrying out phase splitting, and then adding acetone into a lower layer phase to form an extraction unit solution; meanwhile, an acetone aqueous solution of sodium isooctanoate is used as a crystallization base solution. In the crystallization process, a part of the extraction unit solution is rapidly pre-added into a crystallization base solution, a seed crystal is added for pre-crystal growing, then the remaining extraction unit solution is added to complete a crystallization reaction and crystal growing, and the water mass is controlled to be 3%-8% in the crystallization process; and carrying out elution, filtration, washing and drying to obtain cloxacillin sodium spherulites. The method disclosed by the invention has the characteristics of easiness in suction filtration, low impurity content and high yield, and can obviously shorten the production period, improve the yield and improve the product quality.

The high flash point alkyd paint and the preparation method thereof belong to the field of paint, wherein the high flash point alkyd paint comprises: high flash point alkyd resin, various color environmental protection pigments, precipitated barium sulfate, organic bentonite, dispersing agent, defoaming agent, 8% cobalt octoate drier, 12% zirconium octoate drier, 4% calcium octoate drier, 4% zinc octoate drier, low naphthalene S150 solvent oil, D60 solvent oil, DPM solvent, N, N-dimethyl ethanolamine and methyl ethyl ketone oxime anti-skinning agent. The high flash point alkyd paint has a flash point of more than 60 DEG C (closed), belongs to non-dangerous chemical category, can be stored and transported according to general chemicals, meets the requirements of the recommended national standard GB / T 25251-2010 alkyd resin paint, is convenient to operate, has excellent performance, strictly executes the harmful substance limitation in GB 30981-2020 industrial protective paint, and is safe and environmentally friendly.