21 results about "Imidazolidine" patented technology

The present application relates to fine chemicals, and in particular to a method for preparing 2-imidazolidinone by using carbon dioxide. The method comprises reacting CO2 and ethylenediamine in the presence of inorganic sulfide to obtain 2-imidazolidinone. The method uses cheap and readily available sulfur-containing compounds as catalysts for activating CO2 for the first time, and converts ethylenediamine and CO2 into 2-imidazolidinone under relatively low temperature and supercritical conditions. Compared with the prior art, the reaction conditions of the present application are more simple and controllable, and do not require expensive and complex catalysts for post-processing, have the advantages of low energy consumption and low cost, and have extremely high popularization and application value.

The present invention relates to 1-alkyl-5-arylidene-2-selenoxoimidazolidine-4-ons and derivatives thereof, a method for producing the same, and a composition for prevention, improvement or treatment of neurodegenerative disease containing the same. Specifically, 1-alkyl-5-arylidene-2-selenoxoimidazolidine-4-ons and derivatives thereof, which are novel compounds of the present invention, can be used as an excellent composition for prevention, improvement or treatment of neurodegenerative disease.

The present application relates to compositions and methods for the preparation of a spray dried amorphous solid dispersion comprising 5-{3-[4-(3-methyl-benzyloxy) thiophenyl] furan-2-yl} imidazolidine-2, 4-dione and hydroxypropyl beta-cyclodextrin. In particular, the present application relates to an improved spray drying process for producing amorphous solid dispersions with enhanced performance by using a co-solvent system and / or an antioxidant.

The invention belongs to the technical field of organic synthesis, and particularly relates to a preparation method of 2-imidazolidinone and a catalyst used in the preparation method. The invention discloses a preparation method of a sulfonic acid functionalized ionic liquid catalyst. The preparation method comprises the following steps: (1) synthesis of a PMO carrier; (2) sulfonic acid functionalization: preparing a sulfonic acid functionalized material SMO-SO3H by using a PMO carrier; and (3) immobilizing and activating the ionic liquid to obtain the sulfonic acid functionalized ionic liquid catalyst (SMO-IL). The invention also discloses a method for efficiently and greenly preparing 2-imidazolidinone by taking ethylene carbonate and urea as raw materials under the action of the self-made catalyst.

To provide a water-discoloring composition which develops a color by contact with water, has a high color density in color development, does not form a deposit even in a room temperature environment, has a low viscosity, and is practically easy to handle, and to provide an applicator housing the same.SOLUTION: The water-discoloring composition contains at least an electron-donating color-developing organic compound, an electron-accepting compound, and a specific amide compound and / or a specific imidazolidinone compound, and the applicator contains the composition.SELECTED DRAWING: None

The invention relates to the field of lithium ion batteries, and discloses a non-aqueous electrolyte, a lithium battery and electric equipment. Three additives including the N-sulfonyl substituted 2-imidazolidinone derivative, the sulfur-containing compound and the trimethyl phosphite are added into the non-aqueous electrolyte, the three additives generate a synergistic effect, volume expansion of a silicon-based negative electrode is inhibited, excessive decomposition of the electrolyte is avoided, consumption of active lithium and excessive generation of an SEI film are slowed down, and the service life of the non-aqueous electrolyte is prolonged. Therefore, the comprehensive performance of the silicon-based negative electrode lithium ion battery is improved. From the non-aqueous electrolyte formula optimization direction, a series of problems of interface damage and the like caused by volume expansion of the silicon-based negative electrode are improved by a simple, economical and effective method, and the application range of the silicon-based negative electrode lithium battery is widened.

The invention relates to the technical field of modified polyurethane composite materials, and particularly discloses a flame-retardant polyurethane ionic gel material and a preparation method thereof.The flame-retardant polyurethane ionic gel material is prepared from, by mass, tetrafluoroboric acid ionic liquid, diethyl aluminum hypophosphite, piperazine pyrophosphate, polycaprolactone, polypropylene glycol, isophorone diisocyanate and imidazolidinyl urea. The mass percentage of the polycaprolactone is 20%, the mass percentage of the polypropylene glycol is 18.5%, the mass percentage of the isophorone diisocyanate is 2.0-3.0%, the mass percentage of the imidazolidinyl urea is 3.0-4.0%, the mass percentage of the aluminum diethylhypophosphite is 7.0%, the mass percentage of the piperazine pyrophosphate is 7.0%, and the mass percentage of the tetrafluoroboric acid ionic liquid is 40.0%. The ionic gel based on flame retardant polyurethane disclosed by the invention has excellent flame retardant property.

The application relates to a synthesis method for constructing 2,4-imidazolidinedione compounds in a DNA coding compound library. The method takes 2-amino-N-acetamide compounds of On-DNA and p-nitrophenyl chloroformate as raw materials, reacts under the action of alkali, and obtains 2,4-imidazolidinedione compounds. The method has the advantages of mild reaction condition, simple operation, good substrate universality, good product yield and suitability for DNA coding compound synthesis in a multi-well plate.

An imidazolidinylide compound for use as a shut-down additive for a lithium-ion battery. The imidazolidinylide compound has a formula (I),wherein, R1 to R4, each independently the other, is a linear C1- to C16-alkyl group, a branched C1- to C16-alkyl group, a C2- to C16-alkenyl group, a C3- to C8-cycloalkyl group, or a C3- to C16-arene group, wherein at least one of R2 and R3 may also be H, R1 to R4, each independently of the other, is completely, partially or not fluorinated, and R1 to R3 may each also contain O as a heteroatom.

Method for obtaining 3-(n-tolyl)-5,6-dihydroimidase[2,1-b][1,3]thiazole involves the reaction of imidazolidine-2-thione with α-bromoacetophenone. Starting imidazolidine-2-thione is dissolved in ethanol, and α-bromoacetophenone is added. Then reaction mixture is boiled for 4 hours without catalyst. After the reaction is complete, solvent is removed, solid residue is dissolved in 30 mL of acetone, neutralized with aqueous solution of NaHCO₃ , and extracted with chloroform three times in 10-mL portions. The combined organic phases are dried over Na₂ SO₄ and evaporated to obtain the target product, which is identified as 3-(n-tolyl)-5,6-dihydroimidase[2,1-b][1,3]thiazole.

This invention provides a water-color-changing material, a water-color-changing indicator, and a colorant that develop color upon contact with water, exhibiting a deep color when colored, showing good color development even with a small amount of water, and maintaining its color over time. [Solution] A water-color-changing material, a water-color-changing indicator, and a colorant comprising a porous material containing a water-color-changing composition comprising an electron-donating chromogenic organic compound, an electron-accepting compound, and an amide compound and / or an imidazolidinone compound. Furthermore, the amide compound may be an amide compound of a specific structure, and the imidazolidinone compound may be an imidazolidinone compound of a specific structure.

A compound 5-(3-bromophenyl)-3-((diethylamino)methyl)-5-methylimidazolidine-2,4-dione, its synthesis, use as an antibacterial agent and an inhibitor of Chronic Obstructive Pulmonary Disease (COPD).

The present invention relates to process for preparation of Form I polymorph of 1-[(6-chloro-3-pyridyl) methyl]-N-nitroimidazolidin-2-ylideneamine (imidacloprid). In particular the present invention relates to process for preparation of Form I of imidacloprid containing dimer impurity≤0.5%.

The invention relates to the technical field of olefin polymerization catalysts, and provides a compound system loaded with a 2-imidazolidinone compound as well as a preparation method and application of the compound system. The catalyst component contains an inorganic oxide and an active component, the active component is a reaction product of titanium halide, magnesium halide, a 2-imidazolidinone compound and an electron donor compound, based on the total weight of the catalyst component, the content of the inorganic oxide is 5-50 wt%, and the content of the active component is 50-95 wt%. The catalyst component is loaded on an inorganic oxide, a high-dispersity catalyst component can be obtained, the catalyst component can be used for olefin polymerization reaction, and the prepared polymer has high melt index and low hexane extract.

An improved process for the preparation of Ipatasertib is described, which is achieved by efficient preparation of its intermediate 1-(4-chlorophenyl)imidazolidine-2,4-dione followed by condensation reaction with morpholine in the presence of ammonium chloride. In particular, the present invention relates to a process for the preparation of Ipatasertib by using a continuous process for distillation, drying and recycling of the dried morpholine back to the reactor to remove water produced in the reaction, thus providing Ipatasertib in high yield. More particularly, the present invention relates to a process for providing Ipatasertib in very high purity by simple washing with toluene and water. More particularly, the present invention relates to a process for industrial application scale, economically efficient.

The invention belongs to the technical field of adhesives, and particularly relates to a high-temperature-resistant and high-humidity-resistant liquid crystal sealant, which is prepared from the following raw materials in percentage by mass: 10 to 40 weight percent of multifunctional epoxy compound, 15 to 50 weight percent of bisphenol methylethoxymethylene dimethyl acrylate, 5 to 30 weight percent of amine modified epoxy acrylate, 1 to 5 weight percent of photoinitiator, 0.1 to 3 weight percent of thermal initiator, 2 to 4 weight percent of curing agent, 1 to 5 weight percent of filler and 5 to 20 weight percent of auxiliary agent, the multifunctional epoxy compound comprises tris (4-hydroxyphenyl) methane triglycidyl ether, tris (2, 3-epoxypropyl) isocyanurate and 5, 5-dimethyl-1, 3-bis (oxiranyl methyl) imidazolidine-2, 4-diketone, and by utilizing the synergistic complementary effect of the structural characteristics of the tris (4-hydroxyphenyl) methane triglycidyl ether, the tris (2, 3-epoxypropyl) isocyanurate and the 5, 5-dimethyl-1, 3-bis (oxiranyl methyl) imidazolidine-2, 4-diketone, the flame retardant property of the flame retardant is improved; the defects of an existing liquid crystal sealant in the aspects of high-temperature and high-humidity resistance, bonding strength, pollution resistance and the like are effectively overcome.

In particular, the present invention provides a resist underlayer film having a high dry etching rate, a resist underlayer film forming composition, a resist pattern forming method, and a semiconductor device manufacturing method. [Solution] A resist underlayer film forming composition comprising a reaction product of an epoxy group-containing compound and a heterocyclic compound containing one moiety reactive with an epoxy group, and a solvent. Preferably, the heterocyclic compound is selected from furan, pyrrole, pyran, imidazole, pyrazole, oxazole, thiophene, thiazole, thiadiazole, imidazolidine, thiazolidine, imidazoline, dioxane, morpholine, diazine, thiaidine, triazole, tetrazole, dioxolane, pyridazine, pyrimidine, pyrazine, piperidine, piperazine, indole, purine, quinoline, isoquinoline, quinuclidine, chromene, thianthlene, phenothiazine, phenoxazine, xanthene, acridine, phenazine, and carbazole.

The invention provides a method for preparing N-hydroxyethyl-2-imidazolidone through two kettles connected in series and solvent extraction crystallization, and belongs to the technical field of organic synthesis. The method comprises the following steps: in a nitrogen atmosphere, adding urea and water into a low-temperature reaction kettle, dropwise adding N-hydroxyethyl ethylenediamine at a reflux temperature, and carrying out a deamination condensation reaction to obtain a condensation reaction solution; adding N-hydroxyethyl-2-imidazolidinone into a high-temperature reaction kettle in a nitrogen atmosphere, heating, adding the condensation reaction liquid, and carrying out a heat preservation reaction to obtain a reacted material; and adding a solvent into the reacted material to carry out solvent extraction crystallization, thereby obtaining the N-hydroxyethyl-2-imidazolidinone. The deamination condensation reaction is completed in the low-temperature reaction kettle, the deamination ring-closing reaction is completed in the high-temperature reaction kettle through reactive distillation, and a segmented temperature control mode is adopted, so that reactants react completely as much as possible, and the yield and the purity are improved.

The invention relates to the technical field of polyurethane materials, and particularly discloses high-toughness polyurethane and a preparation method thereof.The high-toughness polyurethane is prepared from, by mass, 8.3% of imidazolidinyl urea, 44.6% of polycaprolactone, 41% of polypropylene glycol and 1% of isophorone diisocyanate, the mass percentage of the polycaprolactone is 44.6%, the mass percentage of the polypropylene glycol is 44.6%, and the mass percentage of the isophorone diisocyanate is 44.6%. The mass percent of the isophorone diisocyanate is 5.9%. Through the design of a microphase separation structure, the high-toughness polyurethane material is prepared.

The application discloses a kind of anti-salt emulsion type fracturing fluid thickening agent and preparation process thereof, it is related to thickening agent technical field, including following component preparation: 2-methyl-N-[2-(2-oxo-1-imidazolidinyl)ethyl]-2-propenamide, 3-[N,N-dimethyl-[2-(2-methylprop-2-enyl oxy)ethyl]ammonium] propane-1-sulfonic acid inner salt, N-vinyl caprolactam, perfluoro octyl ethyl acrylate, crosslinking monomer, oil phase system, composite emulsifier, initiation system, nano reinforcing phase, chelating agent and deionized water.The anti-salt emulsion type fracturing fluid thickening agent can still maintain stable viscosity under high temperature and high salt conditions, and the preparation process is simple.

The present invention provides a resist underlayer film having a particularly high dry etching rate, a composition for forming the resist underlayer film, a resist pattern forming method, and a method for manufacturing a semiconductor device. A composition for forming a resist underlayer film, comprising: a compound containing an epoxy group, a reaction product with a heterocyclic compound containing 1 site having reactivity with the epoxy group; and a solvent. It is preferable that the heterocyclic ring contained in the above-mentioned heterocyclic compound be selected from the group consisting of furan, pyrrole, pyran, imidazole, pyrazole, oxazole, thiophene, thiazole, thiadiazole, imidazolidine, thiazolidine, imidazoline, dioxane, morpholine, diazine, thiazine, triazole, tetrazole, dioxolane, pyridazine, pyrimidine, pyrazine, piperidine, piperazine, indole, purine, quinoline, isoquinoline, quinuclidine, chromene, thioxanthene, phenothiazine, phenoxazine, xanthene, acridine, phenazine, and carbazole.