177 results about "Mercaptoethylamines" patented technology

The invention relates to a hollow mesoporous copper sulfide compound modified by hyaluronic acid and a preparation method and application thereof, and the problems that the water solubility of copper sulfide is poor, the targeting property is poor, and the biological compatibility is low can be effectively solved. The method comprises the steps that hollow mesoporous copper sulfide nanoparticles are bonded to the surfaces of copper sulfide nanoparticles, mercaptoethylamine are connected to the bonded copper sulfide nanoparticles, hyaluronic acid modification is conducted through amido bond reactions, and the hollow mesoporous copper sulfide compound modified by the hyaluronic acid is formed; the particle diameter ranges from 50 nm to 250 nm, the mass ratio of the hyaluronic acid to the hollow mesoporous copper sulfide is 1-3 to 3, and the molecular weight of the hyaluronic acid ranges from 40 kDa to 400 kDa. According to the hollow mesoporous copper sulfide compound modified by the hyaluronic acid and the preparation method and application thereof, the synthesis technology is easy, the non-targeting problems of a traditional light thermal therapy technology and a chemotherapy technology are solved, and damage to normal tissues is reduced in the therapeutic process; the hollow mesoporous copper sulfide compound modified by the hyaluronic acid and the preparation method and application thereof have the advantages of being efficient, controllable, strong in drug loading property, high in biological compatibility, good in targeting property, low in cost and the like, and the economic and social benefits are great.

The invention discloses a sulfide heavy metal chelating agent N1,N2,N4,N5-tetra(2-sulfydrylethyl)1,2,4,5-pyromellitic formamide and a preparation method thereof. The preparation method of the chelating agent comprises the following steps of: dissolving certain mol ratios of mercaptoethylamine hydrochloride and pyromellitic formic anhydride into dimethylformamide (DMF) at a certain temperature; agitating to react for a period of time and filtering to obtain the N1,N2,N4,N5-tetra(2-sulfydrylethyl)1,2,4,5-pyromellitic formamide. The sulfide heavy metal chelating agent provided by the invention is used for treating industrial wastewater containing heavy metal ions and can effectively avoid the generation of hydrogen sulfide; the sulfide heavy metal chelating agent can be rapidly reacted with various heavy metal ions in the wastewater at a room temperature to generate water-dissoluble sulfide sediment; the sediment is large in grain size and compact in flocs, so that the deposition time is shortened, heavy metal can be recycled from residues, and secondary pollution is not easy to happen. The sulfide heavy metal chelating agent N1,N2,N4,N5-tetra(2-sulfydrylethyl)1,2,4,5-pyromellitic formamide and the preparation method thereof, provided by the invention, have the advantages of simple preparation process, convenience for use and good treatment effect.