15566-80-0Relevant articles and documents
Combination of antimicrobial and endotoxin-neutralizing activities of novel oleoylamines
Zorko, Mateja,Majerle, Andreja,Sarlah, David,Keber, Mateja Mancek,Mohar, Barbara,Jerala, Roman
, p. 2307 - 2313 (2005)
A combination of antimicrobial and endotoxin-neutralizing activities is desired in order to prevent progression from infection to sepsis due to the release of lipopolysaccharide from dying gram-negative bacteria. Lipopolyamines have emerged as a new type of endotoxin-neutralizing compound, but their antimicrobial activity has not been investigated. We synthesized a series of 10 oleoylamines differing in the polyamino head group, particularly in the number and separation between nitrogen atoms and the position of the oleoyl moiety. Compounds showed activity against both gram-negative and gram-positive bacteria in the micromolar range. Compounds were able to provide penetration of ethidium bromide into bacteria, indicating effects on the bacterial membrane. Oleoylamines neutralized endotoxin in Limulus amoebocyte lysate assays and by neutralization of tumor necrosis factor alpha release in human blood. Comparison of biological activities of compounds identified structural properties responsible for antimicrobial activity, and quantitative structure-property relationship analysis provided a quantitative model for prediction of activity of oleoylamines. Copyright
Corrosion inhibition bactericide and preparation method thereof, and corrosion inhibition bactericide for CO2 flooding production well
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Paragraph 0083-0088, (2020/06/16)
The invention discloses a corrosion inhibition bactericide and a preparation method thereof, and a corrosion inhibition bactericide for CO2 flooding production well, and belongs to the field of oilfield chemistry. The corrosion inhibition bactericide comprises an imidazoline quaternary ammonium salt modified product, dodecyl dimethyl benzyl ammonium chloride, dithiocyano-methane and an anti-freezing agent according to a mass ratio of (3-5):(1-2):(0.1-0.3):(3-6), the chemical structural formula of the imidazoline quaternary ammonium salt modified product is defined in the specification, and inthe formula, R is branched hydrocarbon containing 12-17 carbon atoms, and n is any positive integer from 2 to 5. The corrosion inhibition bactericide has excellent corrosion inhibition, sterilizationand anti-freezing properties, and can be applied to corrosion prevention and sterilization environments of high and cold and winter low-temperature environments.
Imidazoline Mannich base corrosion inhibitor and preparation method thereof
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Paragraph 0033; 0045; 0054; 0063; 0072, (2019/10/01)
The invention relates to the technical field of corrosion inhibitors, and in particular relates to an imidazoline mannich base corrosion inhibitor and a preparation method thereof. The imidazoline mannich base corrosion inhibitor is of the structure shown in the formula I. The imidazoline mannich base corrosion inhibitor is prepared from, by mass, 10-20% of benzaldehyde, 5-15% of butanone, 40-60%of oleic acid imidazoline, 10-30% of ethanol, 1-5% of concentrated hydrochloric acid and 0.1-0.5% of a catalyst. According to the imidazoline mannich base corrosion inhibitor, a benzene ring, an imidazole ring and an ultra-long hydrophobic alkyl chain on imidazoline are introduced, the benzene ring in benzaldehyde and N atoms in the imidazoline ring have relatively high electron cloud density andcan form a firm coordination bond with an empty d track of metal, and the super-long hydrophobic alkyl chain forms a hydrophobic membrane layer away from the surface of the metal and has a peripheralshielding effect on the surface of the metal, so that the corrosion inhibitor has excellent corrosion inhibition performance in a high-temperature acidification environment.
Some imidazoline derivatives as corrosion inhibitors
Aiad, Ismail Abdelrhman,Hafiz,El-Awady,Habib
experimental part, p. 247 - 254 (2011/12/02)
In this study, cationic surfactants having different alkyl chain lengths were prepared by amidation of lauric, myristic, palmitic, stearic, oleic acids with diethylene triamine. The products were quaternized using chlo-roacetic acid. The chemical structure of the prepared compounds was elucidated using different spectroscopic techniques. The critical micelle concentration (CMC) and the free energy of the micellization and adsorption of these compounds were determined by surface tension and conductivity measurements. The products were evaluated as surface-active agents as well as corrosion inhibitors for steel alloy in 1 M hydrochloric and sulfuric acid, the results indicate that these materials have a high efficiency as corrosion inhibitors and as surface active agents. These results were correlated with the chemical structure of the prepared compounds. AOCS 2009.