Recent Advances in Biodegradable Lubricating Materials (A Review)

State of the art in the field of using biodegradable lubricating materials is considered, and data on recent achievements in their use are summarized. The major factors influencing the progress of studies in this field are associated with the environmental regulations becoming more and more stringent. Along with the use of poly(alkylene glycol) and ester liquids, raw materials of vegetable origin attract considerable interest of researchers developing biodegradable oils; cellulose can be used as a promising thickener for multipurpose lubricants.