Carbamate additives for low phosphorus or phosphorus free lubric

Details Carbamate additives for low phosphorus or phosphorus free lubric Carbamate additives for low phosphorus or phosphorus free lubric

1986-03-18

1988-07-19

Dixon, Jr., William R.

Compositions

Electrolytes for electrical devices

252 470, 252 77, 252 781, 558 49, 558 51, 558 52, 564 75, C10M13518

Patent

active

047583622

ABSTRACT:
A phosphorus free or a low phosphorus containing lubricant composition is provided by formulating the composition with an additive of the formula ##STR1## wherein R.sub.1 and R.sub.2 are independently alkyl of 1 to about 7 carbons, aryl, aralkyl or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen; X is O or S; a is 1 or 2; R.sub.3 and R.sub.4 are independently H, alkyl or aryl; and Z is ##STR2## wherein R.sub.5 is hydrogen, alkyl, or aralkyl, and ##STR3## wherein Y is H, OH, R.sub.6 where R.sub.6 is alkyl, aryl or aralkyl, OR.sub.6, OR.sub.7 --OH, where R.sub.7 is alkylene of 1 to about 7 carbon atoms, and NR.sub.8 R.sub.9 where R.sub.8 and R.sub.9 are independently hydrogen, alkyl, cycloaliphatic, heteroalicyclic or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen; with the proviso that when a is 1, Y is not OR.sub.6.
These additives impart improved extreme pressure and anti-wear properties to lubricant compositions.

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