All components that are used for neat oil formulations for metalworking operations belong to group of chemicals that, because of its direct application, can have a big influence on the environment and especially on human health. With time, metalworking operations become more complex and demanding. New materials with various compositions are processed, and they demand metalworking fluids with improved antiwear properties and that provide extreme load-carrying capabilities. Exactly this addition, known as EP additives, that had been until recently based on chlorinated paraffins, are a group of chemicals that need to be replaced as soon as possible with a components that are environmentally acceptable. In this paper, in laboratory conditions, we investigated synthetic polymeric esters, as one of the possible substitute for chlorinated paraffins, in several neat oil formulations, which are used for various metalworking operations. From the above comparative results of analysis results it can be concluded that synthetic polymeric esters can serve like an adequate substitute for metalworking fluids which are designed for easy operations.
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