Patent ID: 6458869
Filing Date: 2002-10-01
Classification: A61K

Abstract:
An etchant/primer composition comprising:a compound having the formula: RN(CH2YCO2M)2 â€ƒwherein R=R1 or R2; R1=an aromatic group; R2=a conjugated unsaturated aliphatic group; Y=a single bond, CH2, CHCH3 or C&boxH;CH2; and each M is independently H, an alkali metal, an alkaline earth metal, aluminum, a transition or redox metal or an alkyl group having 1 to 18 carbon atoms, with the proviso that when both M groups are alkyl groups, said compound corresponding to said formula is hydrolyzed, displaced, or exchanged with other reagents present in the etchant/primer composition; a polar solvent system; and nitric acid.