Patent ID: 6784555
Filing Date: 2004-08-31
Classification: C08L,C09J,H01L

Abstract:
A curable adhesive composition comprising in combination:a curable polymeric base material and contained in said polymeric base material, (I) inorganic insulator particles having average particle size of 1 &mgr;m to 1000 &mgr;m and a major axis to minor axis ratio of about 1.0 to 1.5, said inorganic insulator particles being present in the composition in an amount sufficient to provide a planar adhesive bond thickness between substrates being joined by said adhesive, and (II) at least one low coefficient of thermal expansion filler having an average particle size of less than 10 &mgr;m in an amount of at least greater than 50 weight percent based on the weight of the curable polymeric base material, wherein the low coefficient of thermal expansion fillers having sizes of greater than 10 to about 100 &mgr;m are present in less than 0.1 weight percent based on the total weight of the low coefficient of thermal expansion fillers present in the adhesive composition.