6 results about "Pentetic acid" patented technology

The present invention discloses a novel aqueous composition for use in removing mixed sulfate scale from a surface contaminated with such, said composition comprising: a chelating agent and a counterion component selected from the group consisting of: Li5DTPA; Na5DTPA; K5DTPA; Cs5DTPA; Na4EDTA; K4EDTA; TEAH4DTPA; and TBAH5DTPA; a dissolution enhancer; optionally a compound such as sodium gluconate or the like and a carboxyl-containing fructan such as carboxymethyl inulin. There is also disclosed methods to use such compositions.

The invention discloses a chelating agent modified organic carboxylate electrolyte and application thereof in a magnesium air battery, and belongs to the field of magnesium air battery electrolytes. Comprising deionized water, carboxylate electrolyte and an organic metal ion chelating agent, the chelating agent is selected from at least one of organic metal ion chelating agents such as ethylene diamine tetraacetic acid, diethylenetriamine pentaacetic acid, ethylene glycol diethyl ether diamine tetraacetic acid, 1, 2-cyclohexanediamine tetraacetic acid or nitrilotriacetic acid. The core of the invention lies in that the chelating effect of the chelating agent and metal ions such as Mg < 2 + > is utilized to effectively inhibit the formation of a passivation film on the surface of the magnesium anode and promote the uniform dissolution of the anode. The composite electrolyte can remarkably improve the discharge voltage, the anode utilization rate and the energy density of the battery at the same time. Based on the excellent electrochemical performance, the organic carboxylate electrolyte containing the organic metal ion chelating agent shows good application potential in the field of magnesium air batteries.

The application provides a Sn58Bi low-temperature soldering tin ball surface treatment agent and a preparation method thereof, and relates to the technical field of metal surface treatment.The Sn58Bi low-temperature soldering tin ball surface treatment agent is composed of tin ball activators (diethylenetriamine pentaacetic acid and ethylenediamine tetraacetic acid), a film forming agent, a surfactant, a dispersing agent, an antioxidant, a defoaming agent, a stabilizer, a preservative, deionized water and the like.The surface treatment agent can effectively improve the soldering reliability of the Sn58Bi soldering tin ball, prolong the service life of the soldering tin ball, has good oxidation resistance and corrosion resistance under the premise of not affecting the soldering performance, and is suitable for various complex working environments.Meanwhile, the preparation process of the Sn58Bi low-temperature soldering tin ball surface treatment agent is simple, convenient to use, has good physical stability after film forming, can avoid oxidation and the invasion of pollutants during long-term storage of the soldering tin ball, and improves the quality of the soldering tin ball.

This invention discloses the use of penteacin in the preparation of drugs that promote skin wound healing, wherein the chemical formula of penteacin is C. 14 H 23 N3O 10 The structural formula is shown in Formula 1. This invention proposes the use of pentetic acid to prepare drugs that promote skin wound healing, especially small molecule drugs with pentetic acid as the active ingredient. By targeting and activating HDAC5, pentetic acid achieves the effect of promoting skin wound healing. It has high safety, drug stability, can treat large-area skin wounds, and has low synthesis cost. It provides a new approach for the clinical treatment of skin wound healing and has important clinical application value.

The invention provides a liquid compound fertilizer for promoting crop growth as well as a preparation method and application thereof, and belongs to the technical field of agricultural fertilizers. The liquid compound fertilizer comprises an auxiliary agent, wherein the auxiliary agent is prepared from the following components in parts by weight: 0.2 to 0.8 part of nano silicon, 1 to 3 parts of polyacrylamide, 0.3 to 0.8 part of xanthan gum, 0.5 to 1.5 parts of charcoal, 0.05 to 0.15 part of cobalt nitrate and 0.1 to 0.3 part of cerium diethylene triamine pentaacetate. The liquid compound fertilizer disclosed by the invention has the effects of remarkably improving the plant height, stem diameter, leaf length, leaf width and chlorophyll content of plants, and further can promote the growth of crops. The liquid compound fertilizer can effectively inhibit fusarium in soil, can effectively reduce the morbidity and disease index of soil-borne diseases caused by fusarium, and provides more solutions for prevention and treatment of soil-borne diseases in agricultural production.

The invention belongs to the field of coal tar processing, and particularly relates to a coal tar demetalization method which comprises the following steps: a) mixing a coal tar raw material with a demetalization agent A solution, reacting, and filtering and separating to obtain a primary filtered sample; in the step a), a demetallization agent A in the demetallization agent A solution is selected from one or more of tartaric acid, citric acid, oxalic acid, malic acid and benzoic acid; b) mixing the primarily filtered sample with a demetalization agent B solution, reacting, and filtering and separating to obtain demetalized coal tar; in the step b), a demetallization agent B in the demetallization agent B solution is selected from one or more of diethylenetriamine pentaacetic acid, ethylenediaminetetraacetic acid, nitrilotriacetic acid, diglycolic acid and iminodiacetic acid. The demetallization method provided by the invention is simple in process, low in cost, good in demetallization effect and suitable for treatment of coal tar with high metal element content.