Patent ID: 8697577
Filing Date: 2014-04-15
Classification: C09G,C09K,H01L

Abstract:
1. A method for chemical mechanical planarization of a surface having at least one feature thereon comprising a metal or a metal alloy, said method comprising the steps of: A) placing a substrate having the surface having the at least one feature thereon comprising the metal or the metal alloy in contact with a polishing pad; B) delivering a polishing composition to the surface comprising: C) polishing the substrate with the polishing composition wherein the naphthalene imide derivative comprises at least one selected from the group consisting of Type 1 naphthalene imide derivative having the following formula: where substituents R, X, R′, R″, and R″′ are independently from a hydrogen atom, a linear, branched, or cyclic alkyl group comprising from 1 to 20 carbon atoms, an alkoxy group, alkoxy, an alkyl thioether group, a cyano group, a carboxylic acid group, a carboxylic ester group, an ethylene glycol radical, an amino acid group, and an imine group; Type 2 naphthalene imide derivative having the following formula: where substituents R, X, R′, and R″ are independently from a hydrogen atom, a linear, branched, or cyclic alkyl group comprising from 1 to 20 carbon atoms, an alkoxy group, alkoxy, an alkyl thioether group, a cyano group, a carboxylic acid group, a carboxylic ester group, an ethylene glycol radical, an amino acid group, and an imine group; and Type 3 naphthalene imide derivative having the following formula: where substituents R, X, and R′ are independently from a hydrogen atom, a linear, branched, or cyclic alkyl group comprising from 1 to 20 carbon atoms, an alkoxy group, alkoxy, an alkyl thioether group, a cyano group, a carboxylic acid group, a carboxylic ester group, an ethylene glycol radical, an amino acid group, and an imine group.