6379-46-0Relevant articles and documents
Dicationic benzimidazole corrosion inhibitor and preparation method thereof
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Paragraph 0029-0033, (2021/06/02)
The invention discloses a dicationic benzimidazole corrosion inhibitor and a preparation method thereof. The preparation method comprises the following steps of: (1) carrying out acylation and cyclization reactions on 1, 2, 4, 5-tetraaminobenzene and thiophane-2-carboxylic acid-1, 1-dioxide to obtain a benzimidazole derivative; and (2) reacting the benzimidazole derivative with halogenated alkane to obtain the dicationic benzimidazole corrosion inhibitor. The corrosion inhibitor has a dicationic structure, so that the corrosion inhibitor has good solubility and strong adhesive force on a metal surface. In addition, the corrosion inhibitor has a plurality of alkane straight chains, and the hydrophobic end can directionally enter a corrosive medium, so that a hydrophobic layer is formed to repel the corrosive medium, and the corrosion inhibitor can be used as a corrosion inhibitor for carbon steel and copper and has a good corrosion inhibition effect.
Conjugated benzimidazole corrosion inhibitor and preparation method thereof
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Paragraph 0034-0036, (2021/04/21)
The invention discloses a conjugated benzimidazole corrosion inhibitor and a preparation method thereof, the preparation method is as follows: 1) 1, 2, 4, 5-tetraminobenzene, o-phenylenediamine and 3, 5-pyridine dicarboxylic acid are subjected to acylation and cyclization reactions to obtain pyridine- benzimidazole; 2) reacting pyridine- benzimidazole with methyl iodide under an alkaline condition to replace the 1H position of benzimidazole; and 3) carrying out quaternization reaction to obtain the conjugated benzimidazole corrosion inhibitor. The conjugated benzimidazole corrosion inhibitor provided by the invention is high in conjugation degree of molecules, can form a large pi bond to be adsorbed on a metal surface in a planar configuration, is strong in adhesive force, greatly improves the corrosion inhibition rate, can be used as a copper and iron corrosion inhibitor, and has a good corrosion inhibition effect.
Method for preparing 4,6-diaminoresorcinol hydrochloride
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Paragraph 0015; 0026; 0027; 0029; 0030, (2020/07/03)
The invention discloses a method for preparing 4,6-diaminoresorcinol hydrochloride and belongs to the technical field of preparation of high polymer materials. The method adopts a tubular reactor to carry out continuous reaction, which not only can guaran