New types of water–soluble cutting fluid additives from the adducts of formaldehyde and unsaturated fatty acids

Prins products of some unsaturated fatty acids with paraformaldehyde were prepared by thermal reaction. Corrosion and lubrication tests for these products as water–based cutting fluid additives were carried out. It was found that triethanolamine salts of the adducts from undecylenic acid, oleic acid and linoleic acid with formaldehyde showed effective rust–inhibiting and anti–wear properties for water–based cutting fluids.