Patent ID: 8057697

Claim:
A lapping composition, comprising: a compound having structure I or salts thereof: wherein R1 is selected from the group consisting of â€”O âˆ’ M x+ wherein x is selected from the group consisting of 1, 2, and 3, â€”Oâ€”R3 wherein R3 is selected from the group consisting of alkyl, allyl, and phenyl, â€”N(R3R4) wherein R4 is selected from the group consisting of â€”H, alkyl, allyl, and phenyl, and â€”Sâ€”R3; and wherein R2 is selected from the group consisting of â€”O âˆ’ M x+ wherein x is selected from the group consisting of 1, 2, and 3, â€”Oâ€”R3 wherein R3 is selected from the group consisting of alkyl, allyl, and phenyl, â€”N(R3R4) wherein R4 is selected from the group consisting of â€”H, alkyl, allyl, and phenyl, and â€”Sâ€”R3.