Patent ID: 6734258
Filing Date: 2004-05-11
Classification: C08L

Abstract:
A protective coating composition for a dual damascene process in the form of a uniform solution comprising (A) a resinous ingredient and (B) a crosslinking agent dissolved in an organic solvent of which the weight proportion of the resinous ingredient as the component (A) and the crosslinking agent as the component (B) is in the range from 2:8 to 4:6 and wherein the resinous ingredient as the component (A) has a weight-average molecular weight in the range from 4000 to 15000, the crosslinking agent as the component (B) has a weight-average molecular weight in the range from 500 to 1000 and the overall weight-average molecular weight of the components (A) and (B) is in the range from 1300 to 4500.