| abstract |
A composition of matter is disclosed wherein the composition comprises a hydrazide compound of the formula: n nwherein:n n R 1 is selected from the group consisting of alkyl, alkyl ether, and phenyl; n R 2 , R 3 , R 4 , R 5 , and R 6 are independently selected from the group consisting of hydrogen, alkyl, alkyl ether, and aryl; and n n is an integer of from 0 to 10; n and wherein: n when R 1 is phenyl, it is of the structure: n n n n n n n n n n wherein R 7 , R 8 , and R 9 are independently selected from the group consisting of hydrogen, alkyl, alkyl ether, and aryl, or R 7 can be combined with R 8 to form a ring of 5 or 6 carbon atoms. n The hydrazides are useful as stabilizers for lubricants, greases, and polymeric systems, particularly lubricating oils, as are maleated polymers that have been functionalized with them. |