Patent ID: 6882058
Filing Date: 2005-04-19
Classification: C09J,H01L,Y10T

Abstract:
1. A method for improving one or more performance properties of a non-fluxing adhesive composition in the presence of flux, flux residues and/or reaction products thereof, wherein the performance properties are selected from the group consisting of flux compatibility, flow properties, voiding characteristics and combinations thereof, and wherein the cure onset temperature of the non-fluxing adhesive composition is less than 170° C., the method comprising adding an amount of at least one organic acid to the non-fluxing adhesive composition effective to improve the one or more performance properties of the non-fluxing adhesive composition in the presence of flux, flux residues and/or reaction products thereof, wherein the organic acid is a phenolic comprising the structure: wherein: X is H, alkyl or a di- or poly-valent linker, Phen is an optionally substituted phenol, and m is 1-10.