Patent ID: 7482676
Filing Date: 2009-01-27
Classification: H01L

Abstract:
1. A composition for producing a performance material having a dielectric constant of about 3.7 or less, the composition consisting of: an at least one silica source wherein the at least one silica source contains at least one non-halogen containing monovalent organic group; an at least one porogen comprising from about 5 weight percent to about 75 weight percent ethylene oxide groups; a carboxylate selected from the group consisting of a carboxylic acid, a carboxylate anion, a carboxylic acid ester, or combinations thereof; an at least one solvent; optionally a catalyst; and water, wherein the molar ratio of R to Si in the composition ranges from 0.2 to 0.8; wherein a molar ratio of the carboxylate to the at least one silica source in the composition is 0.1 or greater, and provided that if the at least one chemical reagent has a metal impurity level of 1 ppm or greater then the at least one chemical reagent is purified prior to adding to the mixture.