Stock material or miscellaneous articles – Composite – Of epoxy ether
Reexamination Certificate
2007-10-09
2007-10-09
Feely, Michael J. (Department: 1712)
Stock material or miscellaneous articles
Composite
Of epoxy ether
C428S413000, C438S108000, C438S127000, C523S440000, C523S443000, C523S466000, C525S476000, C525S533000
Reexamination Certificate
active
10737453
ABSTRACT:
An underfill composition with enhanced adhesion and improved resistance to cracking comprising an epoxy resin in combination with a difunctional siloxane anhydride epoxy hardener and optional reagents. In some embodiments, the epoxy resin includes a functionalized colloidal silica filler having a particle size ranging from about 1 nm to about 500 nm. The difunctional siloxane anhydride epoxy hardener can optionally be combined with liquid anhydride epoxy hardeners. Cure catalysts, hydroxyl-containing monomers, adhesion promoters, flame retardants and defoaming agents may also be added to the composition. Further embodiments of the present disclosure include packaged solid state devices comprising the underfill compositions.
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Machine translation of JP 06-157551, provided by the JPO website.
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Campbell John Robert
Prabhakumar Ananth
Rubinsztajn Slawomir
Tonapi Sandeep
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