C10M129/60

WATER-SOLUBLE LUBRICANT

A water-soluble lubricant including a cyclic compound (A) having a ring structure (a) including at least one substructure represented by the following formula (i) or (ii):

##STR00001##

in the above formula, * represents a binding site. The water-soluble lubricant is used in an aqueous metalworking fluid and in a method of metalworking.

WATER-SOLUBLE LUBRICANT

A water-soluble lubricant including a cyclic compound (A) having a ring structure (a) including at least one substructure represented by the following formula (i) or (ii):

##STR00001##

in the above formula, * represents a binding site. The water-soluble lubricant is used in an aqueous metalworking fluid and in a method of metalworking.