Saddle Diesel is a diesel engine plant in a local city in northeast China, which is already the special designation. In this paper, a new polyhydroxy polyacid macromolecule called citric acid-1,4-butanediol-citric acid-cycloalkanic acid-tetradecyl alcohol (CTC-NT) with 1,4-butanediol as the core was designed and synthesized via an “ester-ester” copolymerization process using 1,4-butanediol and citric acid as the raw materials and then grafted sequentially with naphthenic acid and tetradecanol containing functionalized groups. The structures of the synthesized compounds were characterized by nuclear magnetic resonance and infrared spectroscopy, and the results showed that the synthetic products were consistent with the designed molecular structure. The use of the prepared CTC-NT in saddle oil light diesel was studied. The results showed that the filtration improvements of the synthesized multibranched macromolecule CTC-NT were better than those of other additives for the same oil, and the cold filter point was reduced by up to 13°C when the dosage was 900 μg/g.
展开▼
