Patent ID: 7354530
Filing Date: 2008-04-08
Classification: C09G,C09K,C23F,H01L

Abstract:
1. A chemical mechanical polishing system comprising: at least one oxidizing agent; at least one passivation film forming agent; at least one alpha-amino acid selected from the group consisting of alanine, arginine, asparagine, aspartic acid, cystine, cysteine, glutamine, glutamic acid, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, serine, threonine, tryptophan, tyrosine, valine and mixtures thereof; and at least one stopping compound that is selected from the group of compounds consisting of N4-amine (N,N′-bis-[3-aminopropyl] ethylene diamine), 4,7,10 trioxatridecane-1,13-diamine, 3,3-dimethyl-4,4-diaminodicyclohexylmethane, 2-phenylethylamine, polyetheramines, etheramines, N,N-dimethyldipropylenetriamine, 3-[-2-methoxyethoxy]propylamine, dimethylaminopropylamine, 1,4-bis(3-amino propyl) piperazine and mixtures thereof.