Aqueous lubricant composition

Claim 1

An aqueous lubricant composition consisting essentially of (A) from 0.1 to 30 wt.% of a compound of the formula: R.sup.1 Y[(C.sub.p H.sub.2p O).sub.a (C.sub.2 H.sub.4 O).sub.b (C.sub.q H.sub.2q O).sub.c H].sub.m (I) wherein R 1 is a hydrocarbon group having 5 to 26 carbon atoms, Y is an oxygen atom or a nitrogen atom, p and q are each 3 or 4, a≧0, b≧2 and c≧0, with the provisos that the sum of a+b+c is in the range of 2 to 200 and the ratio (a+c)/b is in the range of 0 to 7/3, m is 1 when Y is an oxygen atom and m is 2 when Y is a nitrogen atom, each of the groups --(C p H 2p O) a --, --C 2 H 4 O) b -- and --(C q H 2q O) c -- being present as block segments; (B) from 0.1 to 30 wt.% of a compound of the formula: R.sup.2 [Y[{(C.sub.2 H.sub.4 O).sub.d (C.sub.p H.sub.2p O).sub.e }(C.sub.q H.sub.2q O).sub.f H].sub.m ].sub.n (II) wherein R 2 is a residue of a polyhydric alcohol, a polyhydric phenol, or a polyamine each having 2 to 26 carbon atoms, Y, p and q and m have the same meanings as defined above, d>0, e≧0 and f>0, n is an integer of from 2 to 8, with the provisos that the sum of d+e+f is in the range of 10 to 3,000, the ratio e/d is in the range of 0 to 1, the ratio f/(d+e) is in the range of 1/9 to 0.8, the segment {(C 2 H 4 O) d (C p H 2p O) e } in said formula (II) represents a chain formed by random addition when e is greater than 0, the segment [{(C 2 H 4 O) d (C p H 2p ) e }(C q H 2q O) f H] is in the form of addition blocks in the sequence given in said formula (II) and the content of C 3-4 oxyalkylene blocks is not higher than 49.6% by weight; (C) 0.1 to 20 wt.% of a compound of the formula: ##STR14## wherein R 3 is a hydrocarbon group obtained when a mono- or polycarboxylic acid having 8 to 54 carbon atoms is reacted with an alkanolamine or an alkylalkanolamine to form the formula III compound, R 4 is a hydrogen atom, a hydrocarbon group having 1 to 26 carbon atoms, or a group of the formula --(C s H 2s O)h H , t is an integer of from 1 to 5, r and s are each 2 or 3, and g and h are each a number in the range of 1 to 20; and (D) 20 to 99.7 wt.% of water.