4 results about "Imidazolidinone" patented technology

This invention discloses a method for preparing imidazolidinone derivatives, belonging to the field of pharmaceutical synthesis technology. The method involves reacting isocyanate and polysubstituted propargylamine as raw materials in an organic solvent under rare-earth Lewis acid catalysis to obtain the target imidazolidinone derivative. This invention features a mild reaction, simple operation, improved atom economy and synthetic efficiency, and good functional group compatibility.

The application discloses a hot melt adhesive debonding agent composition and a preparation method and application thereof. The hot melt adhesive debonding agent composition comprises the following components in parts by mass: a release agent 10-20 parts; a solubilizing agent 10-20 parts; an anti-sticking agent 0.2-1 part; and propylene glycol methyl ether 60-90 parts. The release agent is a mixture composed of hexamethylphosphorus triamide and 1,3-dimethyl-2-imidazolidinone. The mixture composed of hexamethylphosphorus triamide and 1,3-dimethyl-2-imidazolidinone is used as the release agent, so that the adhesion of the hot melt adhesive to the surface of a base material can be reduced after immersion at normal temperature (about 25 DEG C), and meanwhile, the aluminum alloy is not corroded.

The present application relates to a kind of preparation cycloxapridone method.The method of the present application is prepared by cyclization reaction with amide compound or cyclic urea compound as catalyst, the amide compound or cyclic urea compound is preferably N',N-dimethylformamide or N',N-dimethylimidazolinone.Cycloxapridone can be greatly reduced by using the method of the present application The generation of ethoxy impurities improves the purity of the product, and the price of catalyst is cheap, easy to synthesize, and the reaction condition is mild, can significantly reduce production cost, has good industrial application value.

The application provides a non-water absorbent, a preparation method thereof and a CO2 capture method for dry associated gas in an oil and gas field. The raw material composition of the non-water absorbent comprises 1-40 wt% of an imidazole substance, 0.5-15% of metal organic framework compound nanoparticles and 50-98.5% of an organic solvent; the imidazole substance comprises at least one of imidazole, 1-methyl imidazole and 2-methyl imidazole; the metal organic framework compound nanoparticles comprise at least one of ZIF-8, ZIF-67 and CALF-20; and the organic solvent comprises at least one of ethylene glycol, 1,3-dimethyl-2-imidazolidinone, propylene carbonate, N,N-dimethylacetamide, polyethylene glycol dimethyl ether, isohexadecane, N-methyl pyrrolidone, 1,3-dimethylpropylene urea, dimethyl sulfoxide and sulfolane. The non-water absorbent provided by the application can realize effective separation of CO2 and C 2+ gas hydrocarbons.