Research Progress on Synthetic Technology of Alkyl Salicylate Detergent
In recent years,with the gradually improving requirements of energy conservation and environmental protection,the engine has been designed to be more compact,high power and high speed,so the requirements for high temperature cleaning performance of internal combustion engine oil have become more demanding,and combustion engine oils with low sulfur and low phosphorus and low ash will be the direction of the future development.Alkyl salicylates have excellent cleaning and acid-neutralizing performance,as well as certain antioxidant and corrosion-resistant abilities,so they are one of the main additives for internal combustion engine oils,and they can meet the requirements of low sulfur,low phosphorus and low ash of internal combustion engine oils.The traditional and improved synthetic processes of alkyl salicylates are reviewed.The traditional synthetic process has restricted the application and development of alkyl salicylates,and the exploration of new synthetic process is the main direction for the development of alkyl salicylates.(Charts9 Tables0 References32)
traditional processnovel processalkylation reactioncarboxylation reaction
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