4 results about "Tetramine" patented technology

The invention provides a preparation method of a corrosion inhibitor of methanol gasoline, and belongs to the technical field of metal corrosion protection. The preparation method comprises steps as follows: alpha-methylstyrene dimer, maleic anhydride, dicumyl peroxide and dimethylbenzene are added into a reactor, and then, the mixture is heated in an atmosphere of nitrogen for reacting; after the mixture is cooled to the room temperature, octadecanol, polyethylene glycol, p-toluenesulfonic acid, n-butyl alcohol and ethyl acetate are added, the mixture is heated for reacting and then cooled to the room temperature, and a mixture I is obtained; the mixture I is washed with a sulfuric acid aqueous solution, then washed with an NaOH aqueous solution and finally washed with an aqueous solution, and a mixture II is obtained; and benzotriazole, 2, 6-tert-butyl-4-methyl phenol, hexamethylene tetramine, ethanol, propargyl alcohol, trimellitate, a surface active agent and a combustion improver are added into the mixture II and uniformly stirred, and the corrosion inhibitor is obtained. The provided methanol gasoline has good solubility with various oils, the additive amount is small, and the corrosion-resistant effect is superior to that of a similar product.

The invention relates to the technical field of metal degreasers, and particularly relates to an environment-friendly high-effective degreaser and a preparation method of same. The degreaser includes a component A and a component B, wherein the component A includes, by weight, 2.0-4.5 g/L of [alpha]-olefin sulfonate, 3.5-6.0 g/L of an aromatic amine oxide cationic surfactant, 1.2-4.6 g/L of lauric acid alkylolamide, 8.0-12.0 g/L of carboxymethylcellulose, 6.0-14.0 g/L of active sludge, 0.5-3.5 g/L of citric acid, 1.0-4.0 g/L of triethylene tetramine, and the balance being water; and the component B includes: 3.0-5.0 g/L of glucose, 0.8-2.4 g/L of lauryl sulfate tryptose, 1.0-3.0 g/L of agar, 2.0-5.0 g/L of inorganic salts, 100 hundred million U/L of bacillus polymyxa and the balance being water. The degreaser has strong permeability, short degreasing time, high degreasing rate and good anti-rust effects and can quickly and effectively remove oil dirt on surfaces of metal.

A method of purifying triethylene tetraamine hexamethylene phosphonic acid (TTHMP) is disclosed. The method includes dissolving a TTHMP crude product into water, adjusting the pH value by using an alkaline compound until reaching strong basicity, adding a poor solvent, allowing an oily compound to be separated from the bottom of the container, allowing the mixture to stand, collecting the oily compound, dissolving the collected oily compound with water, heating until refluxing, adding the poor solvent until a turbid phenomenon occurs, maintaining a refluxing state, adding water again until the solution is clear, stopping heating, allowing the solution to stand and be cooled, allowing an oily compound to be separated from the bottom of the container, collecting the oily compound, repeating the steps to collect the oily compound, dissolving the oily compound with water, adding an acidic compound to adjust the pH value to acidity, adding the poor solvent, allowing an oily compound to be separated from the bottom of the container, allowing the solution to stand, collecting the oily compound, washing the oily compound with a mixed solvent comprising water and the poor solvent, collecting the oily compound, and drying in a vacuum dryer to obtain white solid powder that is a purified TTHMP product. The method is used for separating impurities properties of which are similar in the TTHMP crude product. The yield of the final product is high, and purity is higher than 99%.