The paper is focused on synthesis and study of novel derivatives of 1,3-dioxolane as anti-seizing additives to lubricating oils. By reacting 23,2-dimethyl-4-hydroxymethyl-1,3-dioxolane with -chlorohydroxymethylchloroacetamide, 2,2-dimethyl-4-chloromethylcarbamoylmethyl-1,3-dioxolane was synthesized by reacting it with potassium S-butylxanthate and N,N-sodium diethylcarbamate synthesized 2,2-dimethyl-4-xantogenatomethylcarbamoylmethyloxymethyl-1,3-dioxolane and 2,2-dimethyl-4-N,N-diethylcarbamatomethylcarbamoylmethyloxymethyl-1,3-dioxolane, respectively.
The structure of all synthesized compounds was proved by studying their physicochemical properties including the defermination of refractive indices, specific gravity and the calculation on their basis of molecular refraction (MRD calc. and MRD found.) with their subsequent comparison, elemental composition and IR spectroscopy. The anti-seize properties of the synthesized compounds were studied using a four-ball friction machine (FFM-1).
It was found that the synthesized compounds have high extreme pressure properties in synthetic (penta erythritol ether – PEE) and compounded (SN-1200 gear oil and PEE synthetic oil taken 1:1) oils and can be used to make prototypes of synthetic gear oils used in various gears. Using 2,2-dimethyl-4-xantogenatomethylcarbamoylmethyloxymethyl-1,3-dioxolane as an example, the advantage of using a compounded oil to achieve higher extreme properties is shown.
The dependence of the efficiency of the lubricating properties of the synthesized compounds on their structure was revealed.