117604-42-9Relevant articles and documents
Synthesis and Properties of Three N-Alkyl Bis-Quaternary Ammonium Salt Surfactants
Liu, Jiajia,Shen, Jun,Wang, Chen,Xu, Hujun
, p. 1017 - 1024 (2020/08/13)
Three N-alkyl bis-quaternary ammonium salt surfactants were synthesized by using epichlorohydrin, trimethylamine hydrochloride, and N,N-dimethylalkyl amine as raw materials in a two-step manner. The products were characterized by 1H NMR and MS, confirming the successful synthesis of 2-Hydroxy-N1,N1,N3,N3-tetramethyl-N3-dodecylpropane-1,3-diammonium chloride (HPDDC), 2-Hydroxy-N1,N1,N3,N3-tetramethyl-N3-tetradecylpropane-1,3-diammonium chloride (HPTDC), and 2-Hydroxy-N1, N1, N3, N3-tetramethyl-N3-hexadecylpropane-1,3-diammonium chloride (HPHDC). Moreover, the influence of carbon chain length on surface-active properties, foaming properties, and paraffin liquid emulsion stability was investigated. Results indicated that critical micelle concentrations (cmc) decreased with increasing carbon chain length from 12 to 16, and the cmc and γcmc were lower than those of Dodecyl trimethyl ammonium chloride (DTAC). The products exhibited better foam properties and worse emulsifying performance than those of DTAC. The Krafft points of all products were determined to be below 0 °C. Moreover, the products also demonstrated outstanding antibacterial properties.
Synthetic method of asymmetric bisquaternary ammonium salt bactericide
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Paragraph 0012; 0013; 0016, (2018/12/12)
The invention provides a synthetic method of asymmetric bisquaternary ammonium salt bactericide. The synthetic method comprises the specific steps of using water as a reaction solvent, putting a trimethylamine hydrochloride aqueous solution in a kettle, under the stirring condition, dropwise adding epichlorohydrin, controlling the temperature of a system to be 30-40 DEG C, wherein the molar ratioof trimethylamine hydrochloride to the epichlorohydrin is 1 to (0.8-1.2), and performing a reaction for 1-2 hours so as to obtain an intermediate product namely N-(3-chloro-2-hydroxypropyl)-N,N,N-trimethylammonium chloride; and then raising the temperature to be 80-100 DEG C, adding long chain alkyl tertiary amine to the reaction system at a time, wherein the molar ratio of the long chain alkyl tertiary amine to the trimethylamine hydrochloride is 1 to (1.0-1.5), performing a reaction under the condition of the pressure being 0.1-0.5Mpa for 4-10 hours, and performing synthesis so as to obtainthe asymmetric bisquaternary ammonium salt bactericide of which the molecular structural formula (I) is as shown in the description. The yield of the product namely the asymmetric bisquaternary ammonium salt bactericide can reach 90%, the reaction rate is high, the preparation process is safe and environmentally friendly, large-scale industrial production is easy to realize, and the bacteriocidalproperties of the product can be better than those of a traditional bactericide. (As shown in the description).
Cationic curdlan: Synthesis, characterization and application of quaternary ammonium salts of curdlan
Suflet, Dana M.,Popescu, Irina,Pelin, Irina M.,Nicolescu, Alina,Hitruc, Gabriela
, p. 396 - 405 (2015/03/30)
Water-soluble curdlan derivatives containing quaternary ammonium groups with a degree of substitution up to 0.15 were synthesized using different cationic agents in alkaline medium. The chemical structure of curdlan derivatives was confirmed by FTIR, 13C and 1H NMR spectroscopy. The influence of some reaction conditions (temperature, time, and molar ratio) on the degree of substitution and the viscosimetic behaviour were studied. The degree of substitution increased with the amount of the cationization agent per anhydroglucose unit and was higher when the glycidyl reagents were used, compared with the case when the reagents contained chloro-hydroxypropyl groups. The viscosity behaviour of these new derivatives of curdlan in aqueous solutions and the values of intrinsic viscosities calculated using different semi-empirical equations denote a high hydrodynamic dimension of the macromolecular coils. The interaction of these cationic curdlan derivatives with an anionic curdlan (monobasic curdlan phosphate) was studied in situ by turbidimetric measurements and after 24 h by optical density and dynamic light scattering. The formation of polyelectrolyte complexes was influenced by the degree of substitution, the nature of the quaternary substituent, and by the ionic strength of the aqueous solution. The morphology of the polyelectrolyte complexes particles in dry state was examined by atomic force microscopy.