11 results about "Imidazoline derivatives" patented technology

The invention relates to an extraction agent and an extraction method, and relates to the technical field of wet extraction of industrial solid waste, and the extraction agent comprises the following components in parts by mass: an extraction main agent, an anti-impurity stabilizer and an extraction aid; the extraction main agent comprises di (2-ethylhexyl) phosphate and mono (2-ethylhexyl) phosphate, the impurity-resistant stabilizer comprises an imidazoline derivative, a triazine derivative and dimethyl methylphosphonate, and the extraction assistant comprises isooctyl alcohol; the extraction method comprises the steps of ash ball preparation, impurity removal, extraction and the like. According to the extraction agent and the extraction method, interference impurities such as trace heavy metal ions, sulfides and cyanides generated due to component fluctuation in the purified ash of the calcium carbide furnace are selectively chelated, the impurities are prevented from being combined with the extraction main agent, and then the anti-interference stability of the extraction agent under the condition that the impurity content of the purified ash of the calcium carbide furnace fluctuates is improved; and the control difficulty in the production process is reduced.

The invention relates to the field of lubricating oil, in particular to a compressor oil composition which is prepared from the following components in parts by weight: 0.005 to 0.2 part of an anti-rust agent, 0.05 to 1 part of an extreme pressure anti-wear agent, 0.01 to 0.5 part of a friction reducing agent, 3 to 8 parts of synthetic ester, 0.01 to 1 part of an antioxidant, 0.001 to 0.1 part of an anti-foaming agent and 90 to 97 parts of base oil. The anti-friction agent is a trimethylolpropane-triacid ester derivative, the anti-rust agent is formed by mixing an alkenyl succinic acid half-ester derivative and a carboxyl imidazoline derivative, and the anti-wear reagent at extreme pressure is formed by mixing triphenyl phosphate and an alkyl thiophosphate derivative. The antioxidant is formed by mixing any two of alkyl diphenylamine, alkyl phenyl-alpha-naphthylamine and alkyl hindered phenol. The invention further relates to a preparation method of the compressor oil composition. The compressor oil composition provided by the invention has excellent washing resistance and rust resistance.

The invention belongs to the technical field of lubricating oil additives, and particularly relates to a fluorine-containing imidazoline derivative lubricating oil additive as well as a preparation method and application thereof. The fluorine-containing imidazoline derivative lubricating oil additive disclosed by the invention has a chemical structure as shown in a formula (I). The novel fluorine-containing imidazoline derivative lubricating oil additive provided by the invention can be completely dissolved in fluoroether oil, so that the antirust performance of the lubricating oil additive is greatly improved, and the stability and the oxidation resistance of the lubricating oil additive are excellent; the invention also provides a preparation method of the fluorine-containing imidazoline derivative lubricating oil additive, the yield of the product prepared by the method is more than 85%, the raw materials are simple, the cost is low, the process is simple, and the fluorine-containing imidazoline derivative lubricating oil additive has a wide application prospect. Wherein R is a linear chain or branched chain alkyl group of C1-C12; r1f is CF3 (OCF2CF2) m (OCF2) nCF2, m is any integer from 5 to 9, and n is any integer from 10 to 16.

The invention belongs to the technical field of oil field chemical material preparation, discloses a preparation method of a chemical applied to an oil field, and aims to overcome the defects that an existing oil field corrosion inhibitor is single in function and cannot synchronously cope with the problems of corrosion, microorganism breeding and scaling. The method comprises five steps of raw material pretreatment, corrosion inhibition main agent synthesis, functional component compounding, nanoparticle doping and post-treatment. The method comprises the following steps: preparing seven raw materials including 25-40 parts by weight of an imidazoline derivative and the like, and ultrasonically dispersing nano silicon dioxide in ethanol to obtain a nano dispersion liquid; synthesizing a corrosion inhibition main agent from the imidazoline derivative and thiourea at 50-60 DEG C; adding dodecyl dimethyl benzyl ammonium chloride and polymaleic anhydride, and compounding at 70-80 DEG C; and finally, adding deionized water, stirring and filtering to obtain a finished product. The product has the functions of efficient corrosion inhibition, bacteriostasis and scale prevention, the metal surface film-forming performance is improved through nanometer doping, and the product is suitable for complex oilfield corrosion environments such as injection-production integration.

This invention relates to a method for preparing imidazoline derivatives using heterogeneous catalysis. The invention addresses the technical problem that existing methods for synthesizing imidazoline derivatives require transition metal catalysis and involve cumbersome reaction processes. The method comprises: 1. Preparing a photocatalyst using melamine and glyoxal; 2. Preparing the imidazoline derivative under blue LED light. This invention provides a simple one-step method for synthesizing imidazolines and their derivatives, using heterogeneous materials as photocatalysts. This method eliminates cumbersome synthesis steps, achieves high yields, and is environmentally friendly. The reaction can be carried out at room temperature and pressure under mild conditions, requires no transition metal catalysis, and achieves a yield of over 40%. It has advantages such as simple operation, safety, environmental friendliness, and low cost. This invention is used for the preparation of imidazoline derivatives.

The invention relates to the technical field of preparation of neutralizing corrosion inhibitors, in particular to a high-temperature-resistant and acid-resistant neutralizing corrosion inhibitor and a preparation method thereof, and aims to solve the technical problems that the corrosion inhibition efficiency of an existing corrosion inhibitor is remarkably reduced in a high-temperature and strong-acid environment, the heat stability is insufficient, and effective components in the corrosion inhibitor are easy to decompose. According to the high-temperature-resistant and acid-resistant neutralizing corrosion inhibitor and the preparation method thereof, the organic phosphonate-imidazoline derivative composite corrosion inhibitor is uniformly loaded on the surface of a nano-carrier by controlling pressure, temperature and time conditions and supercritical CO auxiliary loading, so that the utilization rate and the corrosion inhibition effect of the corrosion inhibitor are remarkably improved; through synergistic compounding of ammonium molybdate and sodium tungstate and atomic layer deposition of an AlO protective layer, a compact passive film is formed on the surface of a compound, and the corrosion resistance and long-acting corrosion inhibition capacity of the corrosion inhibitor in a high-temperature acid environment are improved.

The application provides an anti-corrosion composition and application thereof. The anti-corrosion composition mainly comprises imidazoline derivatives, acetylenic alcohol derivatives, deoxidizing agents and metal salts, and secondly comprises surfactants and solvents. The anti-corrosion composition has good film forming performance, high anti-corrosion efficiency, can effectively prevent corrosion of carbon dioxide, hydrogen sulfide, oxygen and chloride ions, can be used as an anti-corrosion agent to effectively protect natural gas pipelines, and has the advantages of easy availability of raw materials, low cost, simple preparation method and application in the field of natural gas pipeline corrosion prevention.

The invention discloses an efficient composite scale and corrosion inhibitor and a preparation method thereof, and belongs to the technical field of corrosion protection of chemical equipment. The corrosion inhibitor is prepared by compounding a core component A, an auxiliary component B and a solvent, the core component A is a dual-modified polyaspartic acid derivative which is prepared by sequentially carrying out two-step ring-opening reaction on polysuccinimide, long-chain alkyl quaternary ammonium salt and a modifier containing sulfur and nitrogen, and quaternary ammonium cations, a hydrophobic long chain and a strong coordination group are introduced into a molecular side chain at the same time. The auxiliary component B is selected from at least two of azoles, organic phosphonic acid and imidazoline derivatives. The solvent is selected from one or more of water and low-carbon alcohol. The composite scale and corrosion inhibitor is designed for oil-water-acid-chlorine multiphase complex corrosive media in a styrene device, shows excellent corrosion and scale inhibition performance on carbon steel equipment under low filling concentration, and is environment-friendly.

The invention discloses an imidazoline corrosion inhibitor and a preparation method thereof, and belongs to the technical field of synthesis of corrosion inhibitors, and the corrosion inhibitor comprises the following components: organic acid, polyamine, formaldehyde, acetophenone, ethanol, xylene, isopropanol, sulfonate and the like. Firstly, organic acid and polyamine are subjected to dehydration and cyclization reaction to form an imidazoline intermediate, then acetophenone and sulfonate groups are introduced through Mannich reaction and substitution reaction, and the modified imidazoline derivative corrosion inhibitor is obtained. The imidazoline molecule contains a plurality of adsorption points such as N, O, S atoms and benzene rings, so that the interface adsorption capacity and the film-forming capacity of the high-temperature-resistant and high-salinity corrosion inhibitor are improved, and the water solubility of the high-temperature-resistant and high-salinity corrosion inhibitor is enhanced, so that the corrosion inhibition efficiency reaches 90% or above when the addition amount of the corrosion inhibitor is 300ppm. In addition, the corrosion inhibitor prepared by the invention also has the advantages of low cost and simplicity and convenience in use, and is convenient for large-scale popularization and application.

The application discloses a preparation method of imidazoline derivatives, mainly using organic amine compounds and fatty acids as raw materials to prepare imidazoline derivative intermediates, using hydrocarbon substituent aromatic sulfonic acid and phosphorus oxychloride as raw materials to prepare aryl sulfonic acid chloride, further reacting the imidazoline derivative intermediates and the aryl sulfonic acid chloride, removing by-products through vacuum distillation to obtain the imidazoline derivatives; and the application also discloses application of the imidazoline derivatives as rust-proof agents in industrial oil products. The imidazoline derivatives obtained through the preparation method have good oil solubility, no acid value, excellent rust-proof performance, and can be widely applied to gear oil, turbine oil, ash-free hydraulic oil, rust-proof oil and other industrial oil products as rust-proof agents.

This invention discloses a method for preparing and applying a coolant for new energy vehicles, belonging to the field of organic polymer technology. The coolant is composed of hindered ester-modified oil, water-controlling and film-forming corrosion-preserving additives, antioxidants, defoamers, and polyα-olefins. The hindered ester-modified oil is a dipentaerythritol hexaester with a specific branched structure; the additives are imidazoline derivatives containing acetal bonds. This invention achieves low conductivity maintenance, efficient charge dissipation, and full-temperature stability through active chemical water control via acetal bonds, interfacial film-forming corrosion protection via imidazoline rings, and synergistic solubilization by hindered esters, making it suitable for immersion cooling systems in power batteries.