Patent ID: 7153335

Claim:
A polishing composition comprising: a) an abrasive; b) an N-acyl-N-hydrocarbonoxyalkyl aspartic acid compound having the formula wherein R 1 is a hydrocarbonoxyalkyl group of from about 6 to about 30 carbon atoms, R 2 is a carboxyl substituted acyl group containing from about 2 to about 30 carbon atoms, or such a group at least partially neutralized with an alkali metal base, an alkaline earth metal base, an amine or a mixture of any of the foregoing, and R 3 , R 4 , R 5 , R 6 , and R 7 are each, independently, selected from hydrogen or a hydrocarbon group of from about 1 to about 30 carbon atoms; c) an oxidizing agent; d) an aromatic triazole compound or derivative thereof; and e) tricine.